PRODUCTION OF ENGINEERED DENDRITIC CELLS AND USES THEREOF
20210277354 · 2021-09-09
Assignee
- FONDAZIONE TELETHON (Roma, IT)
- FONDAZIONE CENTRO SAN RAFFAELE (Milano (MI), IT)
- OSPEDALE SAN RAFFAELE S.R.L. (Milano (MI), IT)
Inventors
Cpc classification
A61K45/06
HUMAN NECESSITIES
C12N5/0637
CHEMISTRY; METALLURGY
A61K39/39
HUMAN NECESSITIES
A61K35/15
HUMAN NECESSITIES
A61K2039/5154
HUMAN NECESSITIES
A61P37/06
HUMAN NECESSITIES
A61K39/0008
HUMAN NECESSITIES
International classification
A61K35/15
HUMAN NECESSITIES
A61K45/06
HUMAN NECESSITIES
Abstract
The present disclosure relates to a genetically modified dendritic cell or precursor thereof expressing at least one anti-gen-derived peptide and at least one immuno-modulatory molecule, its medical use and method of preparation. The invention also relates to an in vitro method to produce IL-10-producing CD49b+LAG-3+ Tr1 cells or antigen-specific FOXP3+ T cells and relative medical uses and pharmaceutical compositions.
Claims
1. A genetically modified dendritic cell or a precursor cell thereof modified with a nucleic acid construct said construct comprising: a nucleic acid sequence a) encoding a chimeric protein consisting of a human invariant chain fused to an antigenic peptide or protein or an antigenic fragment thereof, said sequence a) being operatively linked to a first promoter and optionally to a first transcription regulatory sequence and a nucleic acid sequence b) encoding an immuno-modulatory protein, said sequence b) being optionally operatively linked to a second promoter and optionally operatively linked to a second transcription regulatory sequence.
2. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein the sequence a) further comprises at its 3′ end an miRNA target sequence.
3. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said the first promoter and the second promoter are the same or different.
4. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said nucleic acid construct further comprises a sequence encoding a marker, which is optionally a selectable marker.
5. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein the human invariant chain is Iip33, Iip41, Iip35 or Iip43.
6. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said antigenic peptide or protein or antigenic fragment thereof is derived from an auto-antigen and/or a non-harmful antigen and/or an allergen.
7. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said antigenic peptide or protein or antigenic fragment thereof is selected from the group of immunodominant peptides as described in Table 2.
8. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said immuno-modulatory protein is selected from the group consisting of: IL-10, indoleamine 2,3-dioxygenase (IDO), PDL-1, PDL-2, ILT-3, ILT-4, HO-1, ICOS-L Gal9, HVME, HLA-G, HLA-E, IL-35, TGF-b, CTLA-4Ig, PGE2, TNFRs, Arg1, and mixtures thereof.
9. The genetically modified dendritic cell or precursor cell thereof according to claim 2 wherein the a miRNA target sequence is selected from the group targeting: miR-15a, miR-16-1, miR-17, miR-18a, miR-19a, miR-20a, miR-19b-1, miR-21, miR-29a, miR-29b, miR-29c, miR-30b, miR-31, miR-34a, miR-92a-1,miR-106a, miR-125a, miR-125b, miR-126, miR-142-3p, miR-146a, miR-150, miR-155, miR-181a, miR-223 and miR-424, and mixtures thereof, wherein said miRNA target sequence is optionally repeated.
10. The genetically modified dendritic cell or a precursor cell thereof according to claim 1 wherein said cell displays at least one of the following properties: modulates CD4+ and CD8+ T cell responses; modulates antigen-specific CD4+ and CD8+ T cell proliferation in vitro and/or in vivo; favors the generation of regulatory DC; favors the expansion of antigen-specific Tr1 and/or FOXP3+ Treg cells, is tolerogenic, presents antigen in the context of both MHC class I and class II.
11. The genetically modified dendritic cell or precursor cell thereof according to claim 1 wherein said nucleic acid construct is inserted into a vector, optionally a lentiviral vector or a mono- or bi-directional vector.
12. (canceled)
13. A method for the prevention and/or treatment of a condition selected from the group consisting of: graft versus host disease, organ rejection, autoimmune disease, allergic disease, inflammatory or auto-inflammatory disease, immune response induced by gene therapy, prevention of immune responses against protein replacement therapy, or lysosomal storage disorders or hemophilia, comprising administering the genetically modified dendritic cell or precursor cell thereof of claim 1 to a patient in need thereof.
14. The method according to claim 13 wherein the autoimmune disease is selected from the group consisting of: type 1 diabetes mellitus, autoimmune enteropathy, rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis, autoimmune myositis, psoriasis, Addison's disease, Grave's disease, Sjogren's syndrome, Hashimoto's thyroiditis, myasthenia gravis, vasculitis, pernicious anemia, celiac disease, autoimmune hepatitis, alopecia areata, pemphigus vulgaris, vitiligo, aplastic anemia, autoimmune uveitis, Alopecia Areata, Amyotrophic Lateral Sclerosis (Lou Gehrig's), Ankylosing Spondylitis, Anti-GBM Nephritis, Antiphospholipid Syndrome, Osteoarthritis, Autoimmune Active Chronic Hepatitis, Autoimmune Inner Ear Disease (AIED), Balo Disease, Behcet's Disease, Berger's Disease, Bullous Pemphigoid, Cardiomyopathy, Chronic Fatigue Immune Dysfunction Syndrome, Churg Strauss Syndrome, Cicatricial Pemphigoid, Cold Agglutinin Disease, Colitis Cranial Arteritis, Crest Syndrome, Crohn's Disease, Dego's Disease, Dermatomyositis & JDM, Devic Disease, Eczema, Essential Mixed Cryoglobulinemia, Eoscinophilic Fascitis, Fibromyalgia—Fibromyositis, Fibrosing Alveolitis, Giant Cell Arteritis, Glomerulonephritis, Goodpasture's Disease, Guillain-Barre Syndrome, Hashimoto's Thyroiditis, Hepatitis, Hughes Syndrome, Idiopathic Pulmonary Fibrosis, Idiopathic Thrombocytopenic Purpura, Irritable Bowel Syndrome, Kawasaki's Disease, Lichen Planus, Lupoid Hepatitis, Lupus/SLE, Lyme Disease, Meniere's Disease, Mixed Connective Tissue Disease, Myositis: Juvenile Myositis (JM), Juvenile dermatomyositis (JDM), and Juvenile Polymyositis (JPM), Osteoporosis, Pars Planitis, Pemphigus Vulgaris, Polyglandular Autoimmune Syndromes, Polymyalgia Rheumatica, Polymyositis, Primary Biliary Cirrhosis, Primary Sclerosis Cholangitis, Psoriasis, Raynaud's Syndrome, Reiter's Syndrome, Rheumatic Fever, Rheumatoid Arthritis, Scleritis, Scleroderma, Sticky Blood Syndrome, Still's Disease, Stiff Man Syndrome, Sydenham's Chorea, Takayasus Arteritis, Temporal Arteritis, Ulcerative Colitis, Uveitis, Vasculitis, Wegener's Granulomatosis and Wilson's Syndrome, preferably the autoimmune disease is vasculitis such as catastrophic anti-phospholipid syndrome (also named Asherson's syndrome), Giant Cell Arteritis and anti-ANCA vasculitis or myasthemia gravis, refractory celiac disease, autoimmune uveitis such as Behcet's Disease, pemphigus vulgaris, giant cell myocarditis, Graves' disease, Addison's disease and granulomatosis with polyangiitis.
15. The method according to claim 13 wherein the allergic disease is asthma, atopic allergy or atopic dermatitis.
16. The method according to claim 13 wherein the inflammatory or autoinflammatory disease is a chronic inflammatory disease, optionally the chronic inflammatory disease is selected from the group consisting of: inflammatory bowel disease, Chron's disease, ulcerative colitis, celiac disease.
17. (canceled)
18. A nucleic acid construct comprising: a nucleic acid sequence a) encoding a chimeric protein consisting of a human invariant chain fused to an antigenic peptide or protein or an antigenic fragment thereof, said sequence a) being operatively linked to a first promoter and optionally to a first transcription regulatory sequence and a nucleic acid sequence b) encoding an immuno-modulatory protein, said sequence b) being optionally operatively linked to a second promoter and optionally operatively linked to a second transcription regulatory sequence.
19. A vector comprising the nucleic acid construct as defined in claim 18, optionally said vector is a lentiviral vector or a mono- or bi-directional vector, optionally the vector is produced using an enveloped viral particle expressing Vpx and/or the vector is produced using a packaging cell wherein said packaging cell is genetically engineered to decrease expression of CD47.
20. An in vitro method to produce the genetically modified dendritic cell or a precursor cell thereof claim 1 comprising the steps of: a. Isolating PBMCs from a subject; b. Isolating CD14.sup.+ cells from said isolated PBMCs; c. Incubating said isolated CD14+ cells with an effective amount of Vpx; d. Transducing said isolated CD14.sup.+ cells with the vector according to claim 19.
21. The in vitro method according to claim 20 wherein step d. is performed in the presence of an effective amount of an agent, wherein optionally the agent is IL-4 or Granulocyte-macrophage colony-stimulating factor (GM-CSF) or IL-10, and the amount of IL-4, of GM-CSF and of IL-10 is optionally between 1 and 1000 ng.
22. The in vitro method according to claim 20 wherein the PBMCs are isolated from peripheral blood or from leukapheresis.
23. The in vitro method according to claim 20 wherein the vector is a lentiviral vector, and optionally the amount of said lentiviral vector is between 1 to 100 MOI.
24. A genetically modified dendritic cell or a precursor cell thereof obtainable by the method of claim 20.
25. An in vitro method to produce IL-10-producing CD49b.sup.+ LAG-3.sup.+ Tr1 cells comprising the steps of: a) isolating PBMCs from a blood sample of a subject; b) exposing said isolated PBMCs in appropriate culture conditions with an effective amount of a genetically modified dendritic cell or a precursor cell thereof as defined in claim 1.
26. The in vitro method according to claim 25 wherein the ratio PBMC:genetically modified dendritic cell or precursor thereof is between 5:1 and 10:1.
27. An IL-10-producing CD49b.sup.+ LAG-3.sup.+ Tr1 cell obtainable by the method of claim 25, optionally for medical use.
28. An in vitro method to produce antigen-specific FOXP3.sup.+ T cells comprising the steps of: a) isolating PBMCs from a blood sample of a subject; b) exposing said isolated PBMCs in appropriate culture conditions with an effective amount of a genetically modified dendritic cell or precursor cell thereof as defined in claim 1.
29. The in vitro method according to claim 28 wherein the genetically modified cell expresses at least indoleamine 2,3-dioxygenase (IDO).
30. The antigen-specific FOXP3+ T cell obtainable according to the method of claim 28, optionally for medical use.
31. A pharmaceutical composition comprising the genetically modified cell as defined in claim 1 and a pharmaceutically acceptable carrier.
32. The pharmaceutical composition according to claim 31 further comprising a therapeutic agent.
33. A genetically modified dendritic cell or a precursor cell thereof modified with a nucleic acid construct said construct comprising a nucleic acid sequence encoding IL-10, said sequence being operatively linked to a promoter and optionally to a transcription regulatory sequence and/or optionally to a marker, optionally a selectable marker.
34. A genetically modified dendritic cell or a precursor cell thereof modified with a nucleic acid construct said construct comprising: a nucleic acid sequence a) encoding a chimeric protein consisting of a human invariant chain fused to an antigenic peptide or protein or an antigenic fragment thereof, said sequence a) being operatively linked to a first promoter and optionally to a first transcription regulatory sequence and a nucleic acid sequence encoding at least one miRNA target sequence.
35. The genetically modified dendritic cell or a precursor cell thereof according to claim 33 for use in organ and/or bone marrow transplant and/or for the prevention and/or treatment of graft rejection and/or graft versus host disease.
36. The genetically modified dendritic cell or a precursor cell thereof according to claim 34 for use in the prevention and/or treatment of a condition selected from the group consisting of: autoimmune disease, allergic disease, inflammatory disease, immune response induced by gene therapy.
Description
[0123] The present invention will be illustrated by means of non-limiting examples in reference to the following figures.
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DETAILED DESCRIPTION OF THE INVENTION
[0163] The practice of the present invention will employ, unless otherwise indicated, conventional techniques of cell biology, molecular biology, histology, immunology, oncology, which are within the capabilities of a person of ordinary skill in the art. Such techniques are explained in the literature.
[0164] Immunomodulatory Molecule
[0165] An immunomodulatory molecule is an agent (protein or small molecule) that modulates immune responses.
[0166] An immune response is a process mediated by cells of the immune system that react against an antigen. The immune response can include immunity to pathogenic microorganisms and its products, or autoimmunity to auto-antigens, allergies against allergenic antigen, and graft rejections against allogeneic antigens. In this process the main cells involved are T cells and B cells, and antigen-presenting cells including macrophages and dendritic cells. Immune responses can be measured by proliferation of T cells, and secretion of cytokine such as IL-2, IL-4, IL-10, and IFNg.
[0167] Immunomodulatory molecules include receptors such as PDL-1, PDL-2, ILT-3, ILT-4, HO-1, ICOS-L Gal9, HVME, HLA-G, HLA-E; soluble mediators such as IL-10, IL-35, TGF-a, CTLA-4Ig, PGE2, TNFRs; enzymes such as IDO, Arg1; drugs such as rapamycin, dexamethasone, Vitamin D3, corticosteroids. Preferred immunomodulatory molecule is IL-10 and/or IDO.
[0168] As used herein, the term “enhance” may refer to the act of improving, boosting, heightening, or otherwise increasing the presence, or an activity of, a particular target. For example, enhancing an immune response may refer to any act leading to improving, boosting, heightening, or otherwise increasing an immune response. In other examples, enhancing the expression of a nucleic acid may include, but not limited to increase in the transcription of a nucleic acid, increase in mRNA abundance (e.g., increasing mRNA transcription), decrease in degradation of mRNA, increase in mRNA translation, and so forth. In other examples, enhancing the expression of a protein may include, but not be limited to, increase in the transcription of a nucleic acid encoding the protein, increase in the stability of mRNA encoding the protein, increase in translation of the protein, increase in the stability of the protein, and so forth.
[0169] MicroRNAs (miRNAs) are small, non-coding RNAs which regulate cellular gene expression by post-transcriptional silencing. When miRNAs are partially complementary to the target mRNA sequences, they typically reduce target mRNA stability and inhibit translation. In contrast, when miRNAs are nearly perfectly complementary to their mRNA targets, they cleave the mRNA, triggering its wholesale destruction. miRNA can achieve tissue specific regulation of systemically delivered and ubiquitously expressed transgenes at post-transcriptional level. miRNAs have distinct expression profiles in different tissues and cell types, which differentially regulate transcriptional profiles of cellular genes and cellular functions, including APCs and immune activation. Therefore, methods provided herein employ immune-related miRNAs (e.g., APC-specific miRNAs) to silence transgene expression in immune cells (e.g., APCs).
[0170] miR or miRNA target sequence or “seed sequence” is essential for the binding of the miRNA to the mRNA. The target sequence or seed sequence is a conserved heptametrical sequence which is mostly situated at positions 2-7 from the miRNA 5′-end. Even though base pairing of miRNA and its target mRNA does not match perfect, the “seed sequence” has to be perfectly complementary.
[0171] miRNA target sequence is a sequence that modulate the expression of mRNA and consequently of a protein.
[0172] miR-15a, miR-16-1, miR-17, miR-18a, miR-19a, miR-20a, miR-19b-l, miR-21, miR-29a, miR-29b, miR-29c, miR-30b, miR-31, miR-34a, miR-92a-l, miR-106a, miR-125a, miR-125b, miR-126, miR-142-3p, miR-146a, miR-150, miR-155, miR-181a, miR-223 and miR-424. More preferably miR155, miR146a, repeated 2 times each.
[0173] “Recipient antigen” refers to an antigen expressed by the recipient. As used herein, an “effector cell” refers to a cell, which mediates an immune response against an antigen. An example of an effector cell includes but is not limited to a T cell and a B cell.
[0174] As used herein, the term “immune response” includes T cell mediated. and/or B-cell mediated immune responses. Exemplary immune responses include T cell responses, e.g., cytokine production and cellular cytotoxicity, and B cell responses, e.g., antibody production. In addition, the term immune response includes immune responses that are indirectly affected by T cell activation, e.g., antibody production (humoral responses) and activation of cytokine responsive cells, e.g., macrophages. Immune cells involved in the immune response include lymphocytes, such as B cells and T cells (CD4+. CD8+, Th1 and Th2 cells): antigen presenting cells (e.g., professional antigen presenting cells such as dendritic cells, macrophages, B lymphocytes, Langerhans cells, and non-professional antigen presenting cells such as keratinocytes, endothelial cells, astrocytes, fibroblasts, oligodendrocytes); natural killer cells; myeloid cells, such as macrophages, eosinophils, mast cells, basophils, and granulocytes.
[0175] An antigen is any substance that causes the immune system to react e.g. by generating T-cells recognizing peptides derived from protein substances, and B-cells producing antibodies against the substance. The antigen will bear one or more epitopes.
[0176] Antigen-derived peptide or antigenic peptide or protein is a peptide or protein derived from an antigen processed and presented in the contest of MHC class I or MHC class II molecules to T cells. It is generally composed of between 9 to 12 amino acids. It contains at least one immunodominant peptide or epitope. Antigen-derived peptide fragment or antigenic peptide or antigenic protein fragment is a fragment that is shorter than the antigenic peptide or protein and has the antigenic properties of the peptide or protein.
[0177] The term immunodominant peptide (or “epitope”) as used herein is a portion of an antigen that can elicit an immune response, including B and/or T cell responses. An antigen can have one or more immunodominant peptides. Most antigens have many epitopes; i.e., they are multivalent. In some examples, an epitope is roughly about 10 amino acids in size. Preferably, the immunodominant peptide or epitope is about 4-18 amino acids, more preferably about 5-16 amino acids, and even more most preferably 6-14 amino acids, more preferably about 7-12, and most preferably about 8-10 amino acids. One skilled in the art understands that in some circumstances, the three-dimensional structure, rather than the specific linear sequence of the molecule, is the main criterion of antigenic specificity and therefore distinguishes one immunodominant peptide or epitope from another.
[0178] In the present invention, in order to allow correct processing and presentation of the immunodominant peptide, the construct comprises a nucleotide sequence coding for the immunodominant peptide and variable flanking regions, each of said flanking regions consisting of 5 to 10 amino acids. For instance, for diabetes, the immune dominant peptide is insulin B.sub.9-23, while the construct includes a nucleotide sequence encoding insulin B.sub.4-29.
[0179] In the present invention the antigenic peptide or protein or antigenic fragment thereof is from a polypeptide associated with an abnormal physiological response. Such an abnormal physiological response includes but is not limited to autoimmune diseases, allergic reaction, and other diseases of the invention.
[0180] Modified Antigen-Derived Peptide or Antigenic Peptide
[0181] In the present invention, the antigen-derived peptide (or antigenic peptide) or the immunodominant peptide or epitope may be modified for instance to enhance T cell recognition. Such modification includes but is not limited to: citrullination, deamidation, methylation, carbamylation, glycosylation acylation, acetylation, formylation, amidation, hydroxylation.
[0182] For instance, antigen-derived peptides or the immunodominant peptides or epitopes for rheumatoid arthritis are advantageously modified as citrullinated peptides or glycosylated.
[0183] Antigen-derived peptides or the immunodominant peptides or epitopes for celiac disease (gliadin) are advantageously modified as deamidated peptides.
[0184] The term “antigen” or “Ag” as used herein is defined as a molecule that provokes an immune response. This immune response may involve either antibody production, or the activation of specific immunologically-competent cells, or both. The skilled artisan will understand that any macromolecule, including virtually all proteins or peptides, can serve as an antigen. Furthermore, antigens can be derived from recombinant or genomic DNA. A skilled artisan will understand that any DNA, which comprises a nucleotide sequences or a partial nucleotide sequence encoding a protein that elicits an immune response therefore encodes an “antigen” as that term is used herein. Furthermore, one skilled in the art will understand that an antigen need not be encoded solely by a full-length nucleotide sequence of a gene. It is readily apparent that the present invention includes, but is not limited to, the use of partial nucleotide sequences of more than one gene and that these nucleotide sequences are arranged in various combinations to elicit the desired immune response. Moreover, a skilled artisan will understand that an antigen need not be encoded by a “gene” at all. It is readily apparent that an antigen can be generated synthesized or can be derived from a biological sample. Such a biological sample can include, but is not limited to a tissue sample, a tumor sample, a cell or a biological fluid. “An antigen presenting cell” (APC) is a cell that is capable of activating T cells, and includes, but is not limited to, monocytes/macrophages, B cells and dendritic cells (DCs).
[0185] Invariant Chain
[0186] The invariant chain (Ii; CD74) has multiple functions but is best characterized as the main MHC class II (MHCII) chaperone. It is a type II protein consisting of a short cytoplasmic tail, a transmembrane region and a luminal domain that can be further partitioned into a membrane-proximal disordered region, the main MHCII-interacting sequence (CLIP), and a C-terminal trimerization domain (44, 45) (Mice express two Ii isoforms, p31 and p41, the latter resulting from alternative splicing (46). In humans, the corresponding isoforms are known as p33 and p41. Additionally, around 20% of the Ii mRNAs are translated from an upstream start codon that generates the p35 and p43 isoforms. These bear a 16-amino acid cytoplasmic extension including a strong di-arginine (RxR) ER retention motif (47-49).
[0187] Synthesized alongside MHCIIs, Ii can be viewed as: (i) a GUARDIAN that controls access to the MHCII groove; (ii) a SCAFFOLD that assists folding and pairing of α and β MHCII chains; and (iii) a LEADER that directs MHCIIs to the endosomal pathway. It is well established that these Ii functions depend primarily on the ability of its CLIP region to occupy the peptide groove of MHCIIs. Numerous reports showed that Ii proteolysis in endosomes allows HLA-DM to free the groove of CLIP and to catalyze the binding of nominal antigenic peptides (reviewed (50)).
[0188] The invariant chain of the MHC II molecule (Ii, invariant chain, MHC II gamma chain) is the sequence described most often in the literature as being able to mediate targeting. Various variants of the invariant chain in humans are described and are also referred to as IiP33, IiP41, IiP35 and IiP43 (51) and which are suitable as targeting modules. Further sequences suitable as targeting module for the purposes of the invention are the beta chain of the MHC II molecule (52). Fragments of said sequences are also suitable as targeting module.
[0189] Invariant chain is a protein that in humans is encoded by the CD74 gene. It is a polypeptide involved in the formation and transport of MHC class II protein. The nascent MHC class II protein in ER binds a segment of the invariant chain (CLIP) in order to shape the peptide binding groove and prevent formation of a closed conformation. The invariant chain facilitates MHC class II export from the ER in a vesicle endosome containing the endocytosed antigen proteins (from the exogenous pathway).
[0190] Here the term invariant chain covers all naturally occurring or artificially generated full length or fragmented homologous gene and proteins of a certain similarity to human invariant chain.
[0191] Vpx
[0192] Myeloid cells, such as dendritic cells and macrophages are relatively refractory to vector transduction, in particular lentiviral vector transduction, as a result of the myeloid-specific restriction factor, SAMHD1. SIVmac/HIV-2 and related viruses relieve the SAMHD1-mediated restriction by encoding Vpx, a virion-packaged accessory protein that induces the degradation of SAMHD1 upon infection. HIV-1 does not encode Vpx and cannot package the protein. Suitably, the Vpx packaging motif may be packaged in the lentiviral vector virions, for instance may be placed in the p6 region of the Gag/Pol expression vector that is used to generate the lentiviral vector virions which in turn package Vpx in high copy number. Alternatively, Vpx may be provided to DC or precursor cells thereof by pretreatment of the cells with virus-like particles (VLP) that contain Vpx
[0193] Marker
[0194] In the present invention, a marker is preferably a selectable marker such as ΔNGFR as described herein and whose coding sequence is included the nucleic acid construct in order to allow selection of transduced cells. An alternative can be the truncated form of CD19 in which the deletion of the cytoplasmic domain of CD19 abolishes the signaling pathway [93].
[0195] Bicistronic Constructs
[0196] Bicistronic vectors or constructs are constructs in which two factors are expressed either using multiple promoters or including internal ribosome entry site (IRES) elements. IRES elements are nucleotide sequences that allow for translation initiation in the middle of a messenger RNA (mRNA) sequence.
[0197] Vector
[0198] In addition to the major elements identified above for the vector, the vector also includes conventional control elements necessary which are operably linked to the nucleic acid sequence in a manner which permits its transcription, translation and/or expression in a cell transfected with the plasmid vector or infected with the virus produced by the disclosure. As used herein, “operably linked” sequences include both expression control sequences that are contiguous with the gene of interest and expression control sequences that act in trans or at a distance to control the gene of interest.
[0199] Expression control sequences include appropriate transcription initiation, termination, promoter and enhancer sequences; efficient RNA processing signals such as splicing and polyadenylation (polyA) signals; sequences that stabilize cytoplasmic mRNA; sequences that enhance translation efficiency (e.g., Kozak consensus sequence); sequences that enhance protein stability; and when desired, sequences that enhance secretion of the encoded product. A great number of expression control sequences, including promoters which are native, constitutive, inducible and/or tissue-specific, are known in the art and may be utilized. As used herein, a nucleic acid sequence (e.g., coding sequence) and regulatory sequences are said to be “operably” linked when they are covalently linked in such a way as to place the expression or transcription of the nucleic acid sequence under the influence or control of the regulatory sequences. If it is desired that the nucleic acid sequences be translated into a functional protein, two DNA sequences are said to be operably linked if induction of a promoter in the 5′ regulatory sequences results in the transcription of the coding sequence and if the nature of the linkage between the two DNA sequences does not (1) result in the introduction of a frame-shift mutation, (2) interfere with the ability of the promoter region to direct the transcription of the coding sequences, or (3) interfere with the ability of the corresponding RNA transcript to be translated into a protein. Thus, a promoter region would be operably linked to a nucleic acid sequence if the promoter region were capable of effecting transcription of that DNA sequence such that the resulting transcript might be translated into the desired protein or polypeptide. Similarly two or more coding regions are operably linked when they are linked in such a way that their transcription from a common promoter results in the expression of two or more proteins having been translated in frame. In some embodiments, operably linked coding sequences yield a fusion protein. In some embodiments, operably linked coding sequences yield a functional RNA (e.g., shRNA, miRNA, miRNA inhibitor).
[0200] For nucleic acids encoding proteins, a polyadenylation sequence generally is inserted following the nucleic acid sequences.
[0201] Another vector element that may be used is an internal ribosome entry site (IRES). An IRES sequence is used to produce more than one polypeptide from a single gene transcript. An IRES sequence would be used to produce a protein that contain more than one polypeptide chains.
[0202] Selection of these and other common vector elements are conventional and many such sequences are available.
[0203] The precise nature of the regulatory sequences needed for gene expression in host cells may vary between species, tissues or cell types, but shall in general include, as necessary, 5′ non-transcribed and 5′ non-translated sequences involved with the initiation of transcription and translation respectively, such as a TATA box, capping sequence, CAAT sequence, enhancer elements, and the like. Especially, such 5′ non-transcribed regulatory sequences will include a promoter region that includes a promoter sequence for transcriptional control of the operably joined gene. Regulatory sequences may also include enhancer sequences or upstream activator sequences as desired. The vectors of the disclosure may optionally include 5′ leader or signal sequences. The choice and design of an appropriate vector is within the ability and discretion of one of ordinary skill in the art.
[0204] Examples of constitutive promoters include, without limitation, the retroviral Rous sarcoma virus (RSV) LTR promoter (optionally with the RSV enhancer), the cytomegalovirus (CMV) promoter (optionally with the CMV enhancer) [see, e.g., Boshart et al, Cell, 41:521-530 (1985)], the SV40 promoter, the dihydrofolate reductase promoter, the β-actin promoter, the phosphoglycerol kinase (PGK) promoter, and the EF1 a promoter [Invitrogen].
[0205] Inducible promoters allow regulation of gene expression and can be regulated by exogenously supplied compounds, environmental factors such as temperature, or the presence of a specific physiological state, e.g., acute phase, a particular differentiation state of the cell, or in replicating cells only. Inducible promoters and inducible systems are available from a variety of commercial sources, including, without limitation, Invitrogen, Clontech and Ariad. Many other systems have been described and can be readily selected by one of skill in the art. Examples of inducible promoters regulated by exogenously supplied promoters include the zinc-inducible sheep metallothionine (MT) promoter, the dexamethasone (Dex)-inducible mouse mammary tumor virus (MMTV) promoter, the T7 polymerase promoter system (WO 98/10088); the ecdysone insect promoter (No et al, Proc. Natl. Acad. Sci. USA, 93:3346-3351 (1996)), the tetracycline-repressible system (Gossen et al, Proc. Natl. Acad. Sci. USA, 89:5547-5551 (1992)), the tetracycline-inducible system (Gossen et al, Science, 268: 1766-1769 (1995), see also Harvey et al, Curr. Opin. Chem. Biol., 2:512-518 (1998)), the RU486-inducible system (Wang et al, Nat. Biotech., 15:239-243 (1997) and Wang et al, Gene Ther., 4:432-441 (1997)) and the rapamycin-inducible system (Magari et al, J. Clin. Invest., 100:2865-2872 (1997)). Still other types of inducible promoters which may be useful in this context are those which are regulated by a specific physiological state, e.g., temperature, acute phase, a particular differentiation state of the cell, or in replicating cells only.
[0206] In another embodiment, the native promoter for the nucleic acid sequence will be used. The native promoter may be used when it is desired that expression of the nucleic acid should mimic the native expression. The native promoter may be used when expression of the nucleic acid must be regulated temporally or developmentally, or in a tissue-specific manner, or in response to specific transcriptional stimuli. In a further embodiment, other native expression control elements, such as enhancer elements, polyadenylation sites or Kozak consensus sequences may also be used to mimic the native expression.
[0207] In some embodiments, the regulatory sequences impart tissue-specific gene expression capabilities. In some cases, the tissue-specific regulatory sequences bind tissue-specific transcription factors that induce transcription in a tissue specific manner. Such tissue-specific regulatory sequences (e.g., promoters, enhancers, etc.) are well known in the art. Exemplary tissue-specific regulatory sequences include, but are not limited to the following tissue specific promoters: a liver-specific thyroxin binding globulin (TBG) promoter, a insulin promoter, a glucagon promoter, a somatostatin promoter, a pancreatic polypeptide (PPY) promoter, a synapsin-1 (Syn) promoter, a creatine kinase (MCK) promoter, a mammalian desmin (DES) promoter, a a-myosin heavy chain (a-MHC) promoter, or a cardiac Troponin T (cTnT) promoter. Other exemplary promoters include Beta-actin promoter, hepatitis B virus core promoter, Sandig et al., Gene Ther., 3: 1002-9 (1996); alpha-fetoprotein (AFP) promoter, Arbuthnot et al., Hum. Gene Ther., 7: 1503-14 (1996)), bone osteocalcin promoter (Stein et al., Mol. Biol. Rep., 24: 185-96 (1997)); bone sialoprotein promoter (Chen et al., J. Bone Miner. Res., 11:654-64 (1996)), CD2 promoter (Hansal et al., J. Immunol., 161: 1063-8 (1998); immunoglobulin heavy chain promoter; T cell receptor a-chain promoter, neuronal such as neuron-specific enolase (NSE) promoter (Andersen et al., Cell. Mol. Neurobiol., 13:503-15 (1993)), neurofilament light-chain gene promoter (Piccioli et al., Proc. Natl. Acad. Sci. USA, 88:5611-5 (1991)), and the neuron-specific vgf gene promoter (Piccioli et al., Neuron, 15:373-84 (1995)), among others which will be apparent to the skilled artisan. In some embodiments, the promoter is the muscle specific promoter Desmin460 or the truncated muscle creatine kinase (tMCK) promoter.
[0208] The skilled artisan will also realize that in the case of nucleic acid encoding proteins or polypeptides, that mutations that results in conservative amino acid substitutions may be made in a nucleic acid sequence to provide functionally equivalent variants, or homologs of a protein or polypeptide. In some aspects the disclosure embraces sequence alterations that result in conservative amino acid substitution of a nucleic acid sequence.
[0209] Dendritic Cell
[0210] A dendritic cell is a professional antigen-presenting cell of the immune system with the ability to process and present antigen to T cells.
[0211] The term “dendritic cell” or “DC” refers to any member of a diverse population of morphologically similar cell types found in lymphoid or non-lymphoid tissues. These cells are characterized by their distinctive morphology, high levels of surface MHC-class II expression. DC can be isolated from a number of tissue sources. DC have a high capacity for sensitizing MHC-restricted T cells and are very effective at presenting antigens to T cells in situ.
[0212] The antigens may be self-antigens that are expressed during T cell development and tolerance, and foreign antigens that are present during normal immune processes.
[0213] Precursor Cell of a Dendritic Cell
[0214] Precursor cell of a dendritic cell is a cell expressing CD14 (CD14.sup.+).
[0215] Auto-Antigens
[0216] An auto-antigen (auto-Ags), also called immunodominant peptide is usually a normal protein or complex of proteins that is recognized by the immune system of patients suffering of autoimmune diseases. Under normal conditions, these antigens do not promote immune responses, but in autoimmune diseases, these antigens promote T cell responses that result in tissue damages. A list of known immunodominant peptides is provided in Table 2.
[0217] Auto-Ags include autoAgs in T1D that comprise non-specific islet cell Ags (ICA), insulin, glutamic acid decarboxylase 65 (GAD65), insulinoma antigen-2 (IA-2), heat shock protein (HSP), islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP), imogen-38, and 13 cell-specific autoAgs, e.g., zinc transporter-8 (ZnT8), pancreatic duodenal homeobox factor 1 (PDX1), chromogranin A (CHGA), and islet amyloid polypeptide (IAPP); autoAgs in MS include myelin basic protein (MBP); proteolipid protein (PLP); myelin oligodendrocyte glycoprotein (MOG); myelin-associated antigen (MAG), myelin-associated oligodendrocyte basic protein (MOBP), and 2′,3′-cyclic-nucleotide 3′-phosphodiesterase (CNPase); S10013 protein, and transaldolase H; autoAgs in RA include Fc-part of immunoglobulins; Citrullinated antigens, Carbamylated antigens, collagen, 65-kDa heat-shock protein, cartilage glycoprotein-aggrecan G1, aggrecan core protein precursor (ACAN), α-fibrinogen (FGA), vimentin (VIM); autoAgs in IBD include zymogen granule membrane glycoprotein 2 (GP2); tropomyosins (TMs), carcinoembryonic antigen (CEA); autoAgs in vasculitis are Beta-2-glycoprotein 1 (b2GPI), Myeloperoxidase (MPO); Proteinase 3/Myeloblastin (PR3); autoAgs in myastenia gravis are nicotinic acetylcholine receptor (nAChR, muscle specific kinase (MuSK); autoAgs in autoimmune uvetitis retinal S-antigen (PDSAg), heterogeneous nuclear ribonucleoprotein H3 (Hnrph3), interphotoreceptor retinoid-binding protein (IRBP), cellular retinaldehyde-binding protein (cRALBP); autoAgs in Pemphigus vulgaris are in Desmoglein-31 (Dsg1), Desmoglein-3 (Dsg3), Pemphaxin (PX).
TABLE-US-00002 TABLE 2 known immunodominant peptides Immunodominant peptides Disease Name Sequence References UniProtKB Type 1 InsB.sub.9-23 SHLVEALYLVCGERG (SEQ ID NO: 1) (53) P01308 Diabetes InsB9-23.sub.R22E SHLVEALYLVCGEEG (SEQ ID NO: 2) (INS_HUMAN) InsB923.sub.14E21E22E SHLVEELYVLVCGEEG (SEQ ID NO: 3) HIP-1 GQVELGGGNAVEVLK (SEQ ID NO: 4) (54) HIP-2 LQVELGGGPGAGSLQ (SEQ ID NO: 5) P01308 (INS_HUMAN)/P01 308 (INS HUMAN)/ PPI.sub.C19-A3 GSLQPLALEGSLQKRGIV (SEQ ID (55) P01308 NO: 6) (INS_HUMAN) PIP.sub.17-24 WGPDPAAA (SEQ ID NO: 7) (56) Q9UGI5 InsB.sub.3-23 SHLVEALVLVCGERG (SEQ ID NO: 8) (57) (Q9UG15_HUMAN) GAD.sub.114-123 VMNILLQYVV (SEQ ID NO: 9) GAD65.sub.335-352 TAGTTVYGAFDPLLAVAD (SEQ ID (58) NO: 10) GAD65.sub.554-575 VNFFRMVISNPAATHQDIDFLI (SEQ ID NO: 11) IA-2.sub.206-214 VIVMLTPLV (SEQ ID NO: 12) (57) Q96T92 (INSM2_HUMAN) IA-2.sub.853-872 SFYLKNVQTQETRTLTQFHF (SEQ ID (58) NO: 13) IGRP.sub.13-29 QHLQKDYRAYYTF (SEQ ID NO: 14) (59) Q9NQR9 IGRP.sub.23-39 YTFLNFMSNVGDP (SEQ ID NO: 15) (G6PC2_HUMAN) IGRP.sub.226-238 RVLNIDLLWSVPI (SEQ ID NO: 16) IGRP.sub.247-259 DWIHIDTTPFAGL (SEQ ID NO: 17) ChgA.sub.342-355 WSKMDQLAKELTAE (SEQ ID NO: 18) (58) P10645 (CMGA_HUMAN) ZnT8.sub.186-194 VAANIVLTV (SEQ ID NO: 19) (60) Q8IWU4 (ZNT8_HUMAN) ZnT8.sub.8-22 MEFLERTYLVNDKAAKMHAF (SEQ ID (61) NO: 20) ZnT8.sub.19-29 YLVNDKAAKMHAFTLESVEL (SEQ ID NO: 21) ZnT8.sub.129-134 SLWLSSKPPSKRLTFGWHRA (SEQ ID NO: 22) ZnT8.sub.134-148 PPSKRLTFGWHRAEILGALL (SEQ ID NO: 23) ZnT8.sub.260-274 FIFSILVLASTITILKDFSI (SEQ ID NO: 24) ZnT8.sub.267-281 LKDFSILLMEGVPKSLNYSG (SEQ ID NO: 25) ZnT8.sub.295-309 SLNYSGVKELILAVDGVLSV (SEQ ID NO: 26) ZnT8.sub.199-169 FGWHRAEILGALLSILCIWV (SEQ ID NO: 27) ZnT8.sub.323-337 TMNQVILSAHVATAASRDSQ (SEQ ID NO: 28) HSP60.sub.31-90 KFGADARALMLQGVDLLADA (SEQ ID (62) P10809 NO: 29) (CH60_HUMAN) HSP60.sub.136-199 NPVEIRRGVMLAVDAVIAEL (SEQ ID NO: 30) HSP60.sub.255-275 QSIVPALEIANAHRKPLVIIA (SEQ ID NO: 31) H5P60.sub.286-305 LVLNRLKVGLQVVAVKAPGF (SEQ ID NO: 32) HSP60.sub.436-455 IVLGGGCALLRCIPALDSLT (SEQ ID NO: 33) H5P60.sub.511-939 VNMVEKGIIDPTKVVRTALL (SEQ ID NO: 34) Imogen.sub.55-70 SPSLWEIEFAKQLASV (SEQ ID NO: 35) (63) Reumatoid FGA .sub.79-91 QDFTNRINKLKNS (SEQ ID NO: 36) (64) P02671 Arthritis QDFTNCitINKLKNS (SEQ ID NO: 37) (FIBA_HUMAN) ACAN.sub.84-103 VVLLVATEGRVRVNSAYQDK (SEQ ID P16112 NO: 38) (PGCA_HUMAN) VVLLVATEGCitVRVNSAYQDK (SEQ ID NO: 39) VIM.sub.66-78 SAVRARSSVPGVR (SEQ ID NO: 40) P08670 SAVRACitSSVPGVR (SEQ ID NO: 41) (VIME_HUMAN) CII .sub.1237-1249 QYMRADQAAGGLR (SEQ ID NO: 42) QYMCitADQAAGGLR (SEQ ID NO: 43) P02458 (CO2A1_HUMAN) CII .sub.261-273 AGFKGEQGPKGEP (SEQ ID NO: 44) (65) CII .sub.261-273 with K.sub.264/270 CII .sub.261-275 AGFKGEQGPKGEP (SEQ ID NO: 44) (66) AGFKGgGEQGPKGEP (SEQ ID NO: 45) Multiple MOG.sub.35-55 MEVGWYRPPFSRVVHLYRNGK (67) Q16653 Sclerosis (SEQ ID NO: 46) (MOG_HUMAN) PLP.sub.139-154 HCLGKWLGHPDKF (SEQ ID NO: 47) P60201 (MYPR_HUMAN) MBP.sub.83-97 ENPVVHFFKNIV-TPR (SEQ ID NO: 48) (68) P02686 (MBP_HUMAN) MBP.sub.13-32 KYLATASTMDHARHGFLPRH (SEQ ID (67) NO: 49) MBP.sub.111-129 LSRFSWGAEGQRPGFGYGG (SEQ ID NO: 50) MBP.sub.146-170 AQGTLSKIFKLGGRDSRSGSPMARR (SEQ ID NO: 51) IBD CAP1-6D YLSGADLNL (SEQ ID NO: 52) Q13982 CEA.sub.177-189 LWWVNNQSLPVSP (SEQ ID NO: 53) (Q13982_HUMAN) Celiac α-gliadin .sub.57-74 QLQPFPQPELPYPQPQP (SEQ ID (69)} Q41529 Disease NO: 54) (Q41529 WHEAT) α-gliadin .sub.123-132 QLIPCMDVVL (SEQ ID NO: 55) α-gliadin .sub.56-71 YLQLQPFPQPQLPYP (SEQ ID NO: 56) (70) α-gliadin .sub.61-75 PFPQPQLPYPQPQLP (SEQ ID NO: 57) α-gliadin .sub.66-80 QLPYPQPQLPYPQPQ (SEQ ID NO: 58) α-gliadin .sub.71-85 QPQLPYPQPQLPYPQ (SEQ ID NO: 59) α-gliadin .sub.76-90 YPQPQLPYPQPQPFR (SEQ ID NO: 60) α-gliadin .sub.226-240 YPSGQGSFQPSQQNP (SEQ ID NO: 61) α-gliadin .sub.231-245 GSFQPSQQNPQAQGS (SEQ ID NO: 62) α-gliadin .sub.241-255 QAQGSVQPQQLPQFE (SEQ ID NO: 63) α1-gliadin QLQPFPQPELPY (SEQ ID NO: 64) α2-gliadin PQPELPYPQPE (SEQ ID NO: 65) (71) ωl-gliadin QQPFPQPEQPFP (SEQ ID NO: 66) ω2-gliadin FPQPEQPFPWQP (SEQ ID NO: 67) γ2-gliadin QGIIQPEQPAQL (SEQ ID NO: 68) ala-gliadin SGEGSFQPSQENPQ (SEQ ID NO: 69) (72) γlb-gliadin FPEQPEQPYPEQ (SEQ ID NO: 70) CA β2GPI.sub.276-29 KVSFFCKNKEKKCSY (SEQ ID NO: 71) (73) P02749 PS β2GPI.sub.247-261 VPVKKATVVYQGERV (SEQ ID NO: 72) (APOH_HUMAN) β2GPI.sub.244-261 SCKLVPVKKATVVYQGERVKIQ (SEQ (74) ID NO: 73) β2GPI.sub.1-20 MISPVLILFSSFLCHVIAG (SEQ ID (75) NO: 74) Phemphigus DG3.sub.78-94 QATQKITYRISGVGIDQ (SEQ ID NO: 75) (76) P32926 Vulgaris DG3.sub.96-112 PFGIFVVDKNTGDINIT (SEQ ID NO: 76) (DSG3_HUMAN) DG3.sub.189-205 HLNSKIAFKIVSQEPAG (SEQ ID NO: 77) DG3.sub.205-221 GTPMFLLSRNTGEVRTL (SEQ ID NO: 78) DG3.sub.250-266 QCECNIKVKDVNDNFPM (SEQ ID NO: 79) DG3.sub.342-358 SVKLSIAVKNKAEFHQS (SEQ ID NO: 80) DG3.sub.376-392 NVREGIAFRPASKTFTV (SEQ ID NO: 81) EC2/INT6.sub.211-230 IYVNVEPTFQRTLHKTK (SEQ ID NO: 82) (77) Q02413 EC2/INT6.sub.216-235 GEIRTMNNFLDREIYVNVEP (SEQ ID (DSGl_HUMAN) NO: 83) EC2/INT6.sub.221-240 MNNFLDREIYNVEPTFQRT (SEQ ID NO: 84) EC2/INT6.sub.226-245 DREIYVNVEPTFQRTLHKTK (SEQ ID NO: 85) Autoimmune hS-Ag.sub.281-300 TLTLLPLLANNRERRGIALD (SEQ ID (78) P10523 Uveitis NO: 86) (ARRS_HUMAN) hS-Ag.sub.291-310 NRERRGIALDGKIKHEDTL (SEQ ID NO: 87) hS-Ag.sub.287-306 LLANNRERRGIALDGKIKHE (SEQ ID NO: 88) hS-Ag.sub.311-330 ASSTIIKEGIDRTVLGILVS (SEQ ID NO: 89) hS-Ag.sub.331-350 YQIKVKLTVSGFGELTSSE (SEQ ID NO: 90) hS-Ag.sub.1-20 MAASGKTSKSEPNHVIFKK (SEQ ID (79) NO: 91) hS-Ag.sub.41-60 QVQPVDGVVLVDPDLVKGKK (SEQ ID NO: 92) hS-Ag.sub.61-80 VYVTLTCAFRYGQEDVDVIG (SEQ ID NO: 93) hS-Ag.sub.81-100 LTFRRDLYFSRVQVYPPVGA (SEQ ID NO: 94) hS-Ag.sub.121-140 PFLLTFPDYLPCSVMLQPAP (SEQ ID NO: 95) hS-Ag.sub.141-160 QDSGKSCGVDFEVKAFATDS (SEQ ID NO: 96) hS-Ag.sub.161-180 TDAEEDKIPKKSSVRYLIRS (SEQ ID NO: 97) hS-Ag.sub.201-220 FMSDKPLHLAVSLNREIYFH (SEQ ID NO: 98) hS-Ag.sub.221-240 GEPIPVTVTVTNNTEKTVKK (SEQ ID NO: 99) hS-Ag.sub.241-260 IKACVEQVANVVLYSSDYYV (SEQ ID NO: 100) hS-Ag.sub.301-320 GKIKHEDTNLASSTIIKEGI (SEQ ID NO: 101) hS-Ag.sub.344-356 GELTSSEVATEVP (SEQ ID NO: 102) hS-Ag.sub.346-356 LTSSEVATEVP (SEQ ID NO: 103) Myastenia AChR.sub.12-49 FKDYSSVVRPVEDHRQVVEVTVGLQLI (80) P02708 Gravis QLINVDEVNQI (SEQ ID NO: 104) (ACHA_HUMAN) AChR.sub.48-67 LGIWTYDGSVVAINPES (SEQ ID NO: 105) AChR.sub.75-115 VKKIHIPSEKIWRPDLVLYNNADGDFAIV KFTKVLLQYTGH (SEQ ID NO: 106) AChR.sub.78-93 IHIPSEKIWRPDLVLY (SEQ ID NO: 107) AChR.sub.146-162 LGIWTYDGVVAINPES (SEQ ID NO: 108) AChR.sub.195-212 DPTYLDITYHFVMQRLPL (SEQ ID NO: 109) AChR.sub.240-257 DTPYLDITYHFVMQRLPL (SEQ ID (81) NO: 110) AChR.sub.304-316 VIVELIPSTSSAV (SEQ ID NO: 111) AChR.sub.125-147 KSYCEIIVTHFPFDEQNCSMKLG (SEQ ID NO: 112) Vasculitis MPO.sub.409-428 PRWNGEKLYQEARKIVGAMV (SEQ ID (82) P05164 NO: 113) (PERM_HUMAN) cPR3.sub.138-169 DLGWGVVGTHAAPAHGQALGAVGHW (83) P24158 LVLLWQL (SEQ ID NO: 114) (PRTN3_HUMAN)
[0218] Variants of such known immunodominant peptides are also included in the present invention. The variant maintains the antigenic properties of the immunodominant peptides.
[0219] Non-Harmful Antigens
[0220] Non-harmful antigens are substances present in the body and usually do not promote active immune responses (food antigens including gliadin, ovalbumin, peanut derived proteins, milk derived proteins, wheal derived proteins, ect.).
[0221] Allergens
[0222] An allergen is a usually harmless substance capable of triggering an immune response and results in an allergic reaction. Allegens include cereals containing gluten, peanut-derived proteins, timothy grass allergens (Phl p 1, 2, 5a, 5b, 6), been venom derived proteins, Bet v 1 of birch pollen (Betula verrucosa), Der p 1 and Derp 2 of house dust mite (Dermatophagoides pteronyssinus), Pyr c 5 of pear (Pyrus communis), and Cor a 1 of hazelnut (Corylus avellana).
[0223] Modulation of CD4+ and CD8+ T Cell Responses
[0224] Modulation of CD4+ and CD8+ T cell responses refers to effects on the ability of T cells to produce different levels of pro-inflammatory (i.e. IFN-g, IL-2, GM-CSF) or anti-Inflammatory (i.e. IL-10, TGF-β) cytokines, granzymes, and express receptors (i.e. CD69, CD25, CTLA-4). The level of pro-inflammatory and anti-Inflammatory cytokines may be measured by any method know in the art.
[0225] Modulation of Antigen-Specific CD4.sup.+ and CD8.sup.+ T Cell Proliferation In Vitro and/or In Vivo
[0226] Modulation of antigen-specific CD4.sup.+ and CD8.sup.+ T cell proliferation in vitro and/or in vivo is referring to a property of a cell to inhibit activation and proliferation of T cells.
[0227] Generation of Regulatory DC
[0228] Generation of regulatory DC refers to a method to modulate DC in order to render it able to secrete high levels of anti-inflammatory cytokines (i.e. IL-10) and low amount of pro-inflammatory cytokines (i.e. IL-12, TNF-α, ect), and to express tolerogenic molecules (i.e. HLA-G, ILT4, IDO).
[0229] Favoring the Expansion of Antigen-Specific Tr1 and/or FOXP3.sup.+ Treg Cells
[0230] Favoring the expansion of antigen-specific Tr1 and/or FOXP3.sup.+ Treg cells refers to a property of a cell to induce/convert CD4 T cells with pathogenic activity to a regulatory cell able to suppress T cell responses in vitro and/or in vivo.
[0231] Tolerogenic Cell
[0232] A tolerogenic cell is a cell that promotes the generation of regulatory cells in vitro and/or in vivo.
[0233] Antigen Presentation in the Context of Both MHC Class I and Class II
[0234] Presenting antigen in the context of both MHC class I and class II is a property of a cell to activate CD4.sup.+ and CD8.sup.+ T cells in an antigen-specific manner via their TCR.
[0235] Immunotherapeutic Agents
[0236] They are a class of molecules able to treat disease by inducing, enhancing, or suppressing an immune-responses, among other rapamycin, dexamethasone, vitamin D3, ect.
[0237] Cell Nomenclature
[0238] LV-DC is a dendritic cell than have been transduced with a lentiviral vector (LV).
[0239] tolDC is a dendritic cell that has tolerogenic activity.
[0240] LV.IiOVA is LV encoding for invariant chain fused with OVA peptide.
[0241] LV.OVA.miRNA a monodirectional LV encoding for invariant chain fused with OVA peptide and target sequences for miRNA155 and miRNA146a.
[0242] LV-IL-10/OVA is a bidirectional LV co-encoding for invariant chain fused with OVA peptide and IL-10.
[0243] LV-IDO/OVA is a bidirectional LV co-encoding for invariant chain fused with OVA peptide and IDO.
[0244] DC-OVA is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with OVA peptide (LV-IiOVA).
[0245] DC-OVAmiRNA is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with OVA peptide and target sequences for miRNA155 and miRNA146a.
[0246] DC-IL-10/OVA is a dendritic cell that has been transduced with a LV co-encoding for invariant chain fused with OVA peptide and IL-10 (LV-IL-10/OVA).
[0247] DC-IDO/OVA is a dendritic cell that has been transduced with a LV co-encoding for invariant chain fused with OVA peptide and IDO (LV-IDO/OVA).
[0248] OTII CD4.sup.+ T cells is a CD4.sup.+ T cells isolated from a TCR transgenic mice that recognize OVA.sub.323-339 peptide.
[0249] OTI CD8.sup.+ T cells is a CD8.sup.+ T cells isolated from a TCR transgenic mice that recognize OVA.sub.242-353 peptide.
[0250] DC pulsed with OVA peptide is a dendritic cell that has been pulsed with OVA peptide.
[0251] DC-UnT is a dendritic cell not transduced.
[0252] DC-GFP or DC.sup.GFP is a dendritic cell that has been transduced with a LV encoding GFP (LV.GFP).
[0253] DC-InsB is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with InsB (LV.InsB).
[0254] DC-InsB.miRNA is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with InsB and target sequences for miRNA155 and miRNA146a (LV.InsB.miRNA).
[0255] DC-IL-10/InsB is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with InsB peptide and IL-10 (LV.IL-10/InsB).
[0256] DC-IDO/InsB is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with InsB and IDO (LV.IDO/InsB).
[0257] LV-ΔNGFR/GFP is a bidirectional LV co-encoding for ΔNGFR and GFP.
[0258] LV-GFP is a monodirectional LV encoding for GFP.
[0259] LV-IL-10 is a bidirectional LV co-encoding for ΔNGFR and IL-10.
[0260] DC.sup.IL-10 is a dendritic cell that has been transduced with a LV encoding for ΔNGFR and IL-10.
[0261] DC-10 is a dendritic cell that has been differentiated from CD14.sup.+ cells in the presence of IL-10, IL-4 and GM-CSF.
[0262] Allogeneic CD3.sup.+ T cells are T cells specific for alloAgs.
[0263] Allo-specific anergic CD4.sup.+ T cells are CD4.sup.+ T cells specific for alloAgs that do not proliferate.
[0264] Mature DC (mDC) is a dendritic cell that has been differentiated from CD14.sup.+ cells in the presence of IL-4 and GM-CSF and activated with LPS.
[0265] Allo-mDC is a dendritic cell that has been differentiated from allogeneic CD14.sup.+ cells in the presence of IL-4 and GM-CSF and activated with LPS.
[0266] Allo-specific IL-10-producing Tr1 Cells are T cells specific for alloAgs that produce IL-10 and express CD49b and LAG-3, are anergic and suppress T cell responses.
[0267] LV-ΔNGFR/Ag is a bidirectional LV co-encoding for invariant chain fused with antigen-derived peptide and ΔNGFR.
[0268] LV-IL-10/Ag is a bidirectional LV co-encoding for invariant chain fused with antigen-derived peptide and IL-10.
[0269] LV-CLIP is a bidirectional LV co-encoding for invariant chain CLIP peptide and ΔNGFR.
[0270] DC-IDO/Ag is a dendritic cell that has been transduced with a LV encoding for invariant chain fused with antigen-derived peptide and IDO.
[0271] hLV-DC is a dendritic cell that has been differentiated from human CD14.sup.+ cells and transduced with LV.
[0272] DC.sup.UT is a dendritic cell that has been differentiated from allogeneic CD14.sup.+ cells in the presence of IL-4 and GM-CSF.
[0273] T(DC.sup.UT) cells T cells that have been generated by culturing CD4.sup.+ T cells with allogeneic DC.sup.UT for 10 days.
[0274] T(DC.sup.GFP) T cells that have been generated by culturing CD4.sup.+ T cells with allogeneic DC.sup.GFP for 10 days.
[0275] T(DC.sup.IL-10) T cells that have been generated by culturing CD4.sup.+ T cells with allogeneic DC.sup.IL-10 for 10 days.)
[0276] T(stimDC.sup.IL-10) T cells that have been generated by culturing CD4.sup.+ T cells with allogeneic DC.sup.IL-10 stimulated with LPS or Poli I:C for 10 days.
[0277] In some aspect, the disclosure provides transfected or transduced host cells. The term “transfection” or “transduction” is used to refer to the uptake of foreign DNA by a cell, and a cell has been “transfected” or “transduced” when exogenous DNA has been introduced inside the cell membrane. A number of transfection/transduction techniques are generally known in the art. See, e.g., Graham et al. (1973) Virology, 52:456, Sambrook et al. (1989) Molecular Cloning, a laboratory manual, Cold Spring Harbor Laboratories, New York, Davis et al. (1986) Basic Methods in Molecular Biology, Elsevier, and Chu et al. (1981) Gene 13: 197. Such techniques can be used to introduce one or more exogenous nucleic acids, such as a nucleotide integration vector and other nucleic acid molecules, into suitable host cells.
[0278] A “host cell” refers to any cell that harbors, or is capable of harboring, a substance of interest. Often a host cell is a mammalian cell. A host cell may be used as a recipient of a DNA construct, a plasmid, an accessory function vector, or other transfer DNA associated with the production of lentivectors. The term includes the progeny of the original cell which has been transfected/transduced. Thus, a “host cell” as used herein may refer to a cell which has been transfected/transduced with an exogenous DNA sequence. It is understood that the progeny of a single parental cell may not necessarily be completely identical in morphology or in genomic or total DNA complement as the original parent, due to natural, accidental, or deliberate mutation.
[0279] As used herein, the term “cell line” refers to a population of cells capable of continuous or prolonged growth and division in vitro. Often, cell lines are clonal populations derived from a single progenitor cell. It is further known in the art that spontaneous or induced changes can occur in karyotype during storage or transfer of such clonal populations. Therefore, cells derived from the cell line referred to may not be precisely identical to the ancestral cells or cultures, and the cell line referred to includes such variants.
[0280] As used herein, the terms “recombinant cell” or “genetically modified cell” refers to a cell into which an exogenous DNA segment, such as DNA segment that leads to the transcription of a biologically-active polypeptide or production of a biologically active nucleic acid such as an RNA, has been introduced.
[0281] As used herein, the term “vector” includes any genetic element, such as a plasmid, phage, transposon, cosmid, chromosome, artificial chromosome, virus, virion, etc., which is capable of replication when associated with the proper control elements and which can transfer gene sequences between cells. Thus, the term includes cloning and expression vehicles, as well as viral vectors, preferably lentiviral vectors. In some embodiments, useful vectors are contemplated to be those vectors in which the nucleic acid segment to be transcribed is positioned under the transcriptional control of a promoter. A “promoter” refers to a DNA sequence recognized by the synthetic machinery of the cell, or introduced synthetic machinery, required to initiate the specific transcription of a gene. The phrases “operatively positioned,” “under control” or “under transcriptional control” means that the promoter is in the correct location and orientation in relation to the nucleic acid to control RNA polymerase initiation and expression of the gene. The term “expression vector or construct” means any type of genetic construct containing a nucleic acid in which part or all of the nucleic acid encoding sequence is capable of being transcribed. In some embodiments, expression includes transcription of the nucleic acid, for example, to generate a biologically-active polypeptide product or inhibitory RNA (e.g., shRNA, miRNA, miRNA inhibitor) from a transcribed gene.
[0282] In the present invention the term “indolamine dioxygenase” or “IDO” means IDO1 (indoleamine 2,3-dioxygenase, EC 1.13.1 1.52) or IDO2 (indoleamine-pyrrole 2,3 dioxygenase-like 1, EC 1.13.11.-) these being two different proteins that can catabolize tryptophan and can be expressed by APCs.
[0283] “Immune tolerance” means the lack of response to antigens (self- or foreign-antigens) and included natural tolerance or induced tolerance (i.e. deliberate manipulation of the immune system).
[0284] “Self-antigen” means any molecule or chemical group of an organism which acts as an antigen in inducing a T effector cell response or antibody formation in another organism but to which the healthy immune system of the parent organism is tolerant. Under certain circumstances, for example, when a subject is suffering from or is susceptible to an autoimmune disease, the parent organism is not tolerant to the self-antigen and a specific adaptive immune response is mounted against self-antigens.
[0285] “Exogenous therapeutic agent” means any therapeutic agent for treatment of a subject that originates from outside the subject.
[0286] The term “co-culturing” means culturing two (or more) cell types in the presence of each other.
[0287] The skilled artisan will understand that the compositions and methods described herein can be used, in conjunction with current therapeutic approaches for treating the diseases and disorders described elsewhere herein. By way of non-limiting example, the cells of the present invention can be used in conjunction with the use of immunosuppressive drug therapy. An advantage of using the cells in conjunction with immunosuppressive drugs is that by using the methods of the present invention to ameliorate the severity of the immune response in a subject, such as a transplant recipient, the amount of immunosuppressive drug therapy used and/or the frequency of administration of immunosuppressive drug therapy can be reduced. A benefit of reducing the use of immunosuppressive drug therapy is the alleviation of general immune suppression and unwanted side effects associated with immunosuppressive drug therapy. It is also contemplated that the cells of the present invention may be administered into a recipient repeatedly or as a “one-time” therapy for the prevention or treatment of a disease or disorder, such as an autoimmune disease or disorder, an inflammatory disease or disorder, or a disease or disorder associated with transplant, such as host rejection of donor tissue or graft versus host disease. A one-time administration of cells into the recipient of the transplant eliminates the need for chronic immunosuppressive drug therapy. However, if desired, multiple administrations of cells may also be employed.
[0288] Based upon the disclosure provided, herein, the dendritic cells or precursors thereof can be obtained from any source, for example, from the tissue donor, the transplant recipient or an otherwise unrelated source (a different individual or species altogether). The cells may be autologous with respect to the T cells (obtained from the same host) or allogeneic with respect to the T cells. In the case where the dendritic cells or precursor thereof are allogeneic, the cells may be autologous with respect to the transplant to which the T cells are responding to, or the cells may be obtained, from a mammal that is allogeneic with respect to both the source of the T cells and the source of the transplant to which the T cells are responding to. In addition, the T cells may be xenogeneic to the T cells (obtained from an animal of a different species), for example mouse cells may be used to suppress activation and proliferation of human T cells.
[0289] Another aspect of the present invention encompasses the route of administering the cells to the subject. Cells can be administered by a route that is suitable under the circumstances. Cells can be administered systemically, i.e., parenterally, by intravenous injection or intraperitoneal injection or can be targeted to a particular tissue or organ, such as bone marrow, cells can be administered via a subcutaneous implantation of cells or by injection of the cells into connective tissue, for example, muscle.
[0290] The cells can be suspended in an appropriate diluent, at a concentration of about 1×10.sup.4 to about 20×10.sup.7, preferably about 5×10.sup.6 cells/ml. Suitable excipients for injection solutions are those that are biologically and physiologically compatible with the cells and with the recipient, such as buffered saline solution or other suitable excipients. The composition for administration can be formulated, produced and stored according to standard methods complying with proper sterility and stability.
[0291] The dosage of the cells varies within wide limits and may be adjusted to the subject's requirements in each particular case. The number of cells used depends on the weight and condition of the recipient, the number and/or frequency of administrations, and other variables known to those of skill in the art.
[0292] Auto-Immune Disease
[0293] Auto-immune disease is a condition arising from an abnormal immune response against auto-antigens and comprises: type 1 diabetes mellitus, autoimmune enteropathy, rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis, autoimmune myositis, psoriasis, Addison's disease, Grave's disease, Sjogren's syndrome, Hashimoto's thyroiditis, myasthenia gravis, vasculitis, pernicious anemia, celiac disease, autoimmune hepatitis, alopecia areata, pemphigus vulgaris, vitiligo, aplastic anemia, autoimmune uveitis.
[0294] Auto-immune disease also includes: Alopecia Areata, Amyotrophic Lateral Sclerosis (Lou Gehrig's), Ankylosing Spondylitis, Anti-GBM Nephritis, Antiphospholipid Syndrome, Osteoarthritis, Asthma, Atopic Allergy, Atopic Dermatitis, Autoimmune Active Chronic Hepatitis, Autoimmune Inner Ear Disease (AIED), Balo Disease, Behcet's Disease, Berger's Disease, Bullous Pemphigoid, Cardiomyopathy, Chronic Fatigue Immune Dysfunction Syndrome, Churg Strauss Syndrome, Cicatricial Pemphigoid, Cold Agglutinin Disease, Colitis Cranial Arteritis, Crest Syndrome, Crohn's Disease, Dego's Disease, Dermatomyositis & JDM, Devic Disease, Eczema, Essential Mixed Cryoglobulinemia, Eoscinophilic Fascitis, Fibromyalgia—Fibromyositis, Fibrosing Alveolitis, Giant Cell Arteritis, Glomerulonephritis, Goodpasture's Disease, Guillain-Barre Syndrome, Hashimoto's Thyroiditis, Hepatitis, Hughes Syndrome, Idiopathic Pulmonary Fibrosis, Idiopathic Thrombocytopenic Purpura, Irritable Bowel Syndrome, Kawasaki's Disease, Lichen Planus, Lupoid Hepatitis, Lupus/SLE, Lyme Disease, Meniere's Disease, Mixed Connective Tissue Disease, Myositis/JM, JDM, & JA, Osteoporosis, Pars Planitis, Pemphigus Vulgaris, Polyglandular Autoimmune Syndromes, Polymyalgia Rheumatica, Polymyositis, Primary Biliary Cirrhosis, Primary Sclerosis Cholangitis, Psoriasis, Raynaud's Syndrome, Reiter's Syndrome, Rheumatic Fever, Rheumatoid Arthritis, Scleritis, Scleroderma, Sticky Blood Syndrome, Still's Disease, Stiff Man Syndrome, Sydenham's Chorea, Takayasus Arteritis, Temporal Arteritis, Ulcerative Colitis, Uveitis, Vasculitis, Wegener's Granulomatosis and Wilson's Syndrome.
[0295] Preferred autoimmune diseases include vasculitis such as catastrophic anti-phospholipid syndrome (also named Asherson's syndrome), Giant Cell Arteritis and anti-ANCA vasculitis, myasthemia gravis, refractory celiac disease, autoimmune uveitis such as Behcet's Disease, pemphigus vulgaris, giant cell myocarditis, Graves' disease, Addison's disease and granulomatosis with polyangiitis.
[0296] Material and Methods
[0297] Subjects. All protocols were approved by the Institutional Review Board and samples collected under written informed consent according to the Declaration of Helsinki.
[0298] Cell preparation and cell lines. Bone marrow cells isolated from Balb/c, C57Bl/6 or NOD mice were kept in culture for 8 days the presence of rmGM-CSF (25 ng/mL; R&D Systems) to differentiate into DC.
[0299] Peripheral blood mononuclear cells (PBMC) were prepared by centrifugation over gradients. CD4.sup.+ T cells were purified with the CD4 T cell isolation kit (Miltenyi Biotec), resulting purity of >95%. CD4.sup.+ T cells were then depleted of CD45RO.sup.+ cells using anti-CD45RO-coupled magnetic beads and LD negative selection columns (Miltenyi Biotech). The proportion of CD4.sup.+ CD45RA.sup.+ in the selected population was consistently greater than 90%. CD14.sup.+ and CD3.sup.+ T cells were purified by positive selection with CD14.sup.+ and CD3.sup.+ Microbeads (Miltenyi Biotec), respectively with a resulting purity of >95%.
[0300] CD14.sup.+ monocytes were isolated from PBMC by positive selection using CD14 MicroBeads (Miltenyi Biotech) according to the manufacturer's instructions. Cells were cultured in RPMI 1640 (Lonza) supplemented with 10% Fetal Bovine Serum (FBS) (Lonza,) or with 5% Human Serum (HS) (EuroClone), 100 [U/ml] penicillin/streptomycin (Lonza, Italy), 2 mM L-Glutamine (Lonza, Italy), (DC medium) at 37° C. in the presence of 10 ng/ml rhIL-4 (R&D Systems) and 100 ng/ml rhGM-CSF (Genzyme) with 10 ng/ml of rhIL-10 (BD, Bioscience) for 7 days to differentiate DC-10. Cells cultured with rhIL-4 and rhGM-CSF on day 5 were matured with 1 μg/ml of LPS (Sigma) for additional 2 days to generate mDC. At day 7, DC were collected, phenotypically analyzed, and used to stimulate T cells.
[0301] In some experiments HLA-DQ8.sup.+ or HLA-DQ2.5.sup.+ CD14.sup.+ cells were cultured with serum-free DC medium (CellGenix) supplemented with 100 [U/ml] penicillin/streptomycin (Euroclone) in the presence of 10 ng/ml rhIL-4 and 100 ng/ml rhGM-CSF (Miltenyi Biotec) with or without 10 ng/ml of rhIL-10 (CellGenix) at a density of 10{circumflex over ( )}6 cells/ml of culture medium. On Day 3 cells were supplemented with 1 ml of serum-free medium plus 20 ng/ml rhIL-4 and 200 ng/ml rhGM-CSF (Miltenyi Biotec). Immature DCs were collected on day 7 for subsequent phenotypical and functional analysis.
[0302] DNA extraction and HLA-DQ screening. To select HLA-DQ8.sup.+ and/or HLA-DQ2.5.sup.+ healthy donors, genomic DNA was extracted from 200p1 of whole blood using QIAamp DNA Blood Mini Kit (Qiagen), according to Manufacturer's instructions. Presence or absence of the HLA-DQ8 or -DQ2.5 allele was determined by PCR using Eu-GEN Kit (Eurospital), following Manufacturer's instructions.
[0303] Plasmid construction. The coding sequence of murine invariant chain (CD74) fused to sequences encoding for InsB.sub.4-29 or OVA.sub.315-353 was synthetized (GeneArt) and cloned into several LV backbones: hPGK.XXX.WPRE (84) to obtain LV-IiOVA and LV-IiInsB; hPGK.XXX.WPRE miR155T.mir146aT to obtain LV-IiOVAmiRNA and LV-IiInsBmiRNA and into bi-directional backbones hPGK.XXX.WPRE.mCMVIL10.SV40PA (85) and hPGK.XXX.WPRE.mCMVIDO.SV40PA to obtain LV-IL-10/OVA and LV-IL-10/InsB and LV-IDO/OVA and LV-IDO/InsB, respectively.
[0304] The coding sequence of human IL-10 was excised from pH15C (ATCC no 68192), and the 549 bp fragment was cloned into the multiple cloning site of pBluKSM (Invitrogen) to obtain pBluKSM-hIL-10. A fragment of 555 bp was obtained by excision of hIL-10 from pBluKSM-hIL-10 and ligation to 1074.1071.hPGK.GFP.WPRE.mhCMV.dNGFR.SV40PA (85) (here named LV-ΔNGFR), to obtain LV-IL-10/ΔNGFR. The presence of the bidirectional promoter (human PGK promoter plus minimal core element of the CMV promoter in opposite direction) allows co-expression of the two transgenes. The sequence of LV-IL-10/ΔNGFR was verified by pyrosequencing (Primm).
[0305] The coding sequence of p33 isoform of human invariant chain (Iip33) fused to a sequence encoding for the InsulinB peptide 4-29 (InsB.sub.4-29) or a2-gliadin 51-80 was synthetized (GeneArt) and cloned into the following bi-directional backbones: hPGK.XXX.WPRE.mCMV.YYYY.SV40PA to obtain LV-Iip33Ag/ΔNGFR, LVIip33Ag/IL-10, or LVIip33Ag/IDO As control, the antigen-encoding sequence was replaced with the Class II-associated invariant chain peptide (CLIP). The sequence of the resulting plasmids was verified by pyrosequencing (GATC).
[0306] Vector production and titration. VSV-G-pseudotyped third generation bdLVs were produced by Ca.sub.3PO.sub.4 transient four-plasmid co-transfection into 293T cells and concentrated by ultracentrifugation as described (40). Titer was estimated by limiting dilution, vector particles were measured by HIV-1 Gag p24 antigen immune capture (NEN Life Science Products;), and vector infectivity was calculated as the ratio between titer and particle. Titers ranged from 5×10.sup.8 to 6×10.sup.9 transducing units/ml, and infectivity from 5×10.sup.4 to 10.sup.5 transducing units/ng of p24.
[0307] Transduction of dendritic cells. Bone marrow cells isolated from Balb/c, C57Bl/6 or NOD mice were differentiated into DC in the presence of rmGM-CSF (25 ng/mL; R&D Systems) and transduced with LV on day 2 at a multiplicity of infection (MOI) of 3.
[0308] CD14.sup.+ monocytes were plated as above described in the presence of Viral-Like-Particles (VIP) containing Viral Protein X (VPX) 1-5 μl. After 6 h LVs were added at a Multiplicity of Infection (MOI) of 5. After 14-18 h half medium was replenished. Efficiency of transduction cells was assessed on control transduced by flow cytometry based on cell surface expression of ΔNGFR.
[0309] Cytokine determination. Monocyte-derived DCs were collected at day 7, washed with PBS and re-plated at a density of 500000 cells/ml in fresh medium alone or supplemented with LPS 200 ng/ml and human IFNγ 50 ng/ml. After 48 h, supernatants were collected and cytokine concentration was determined by ELISA.
[0310] Proliferation and suppression assays. To assess Ag-specific proliferation of CD4+ and CD8+ T cells, OTII and OTI cells were labelled with eFluor-670 proliferation dye (Invitrogen), following Manufacturer's instructions. eFluor-labelled T cells were plated in U-bottom 96 well plates in a final volume of 200p1 alone or in the presence of LV-DC (T: DC ratio of 10:1). After 5 days, proliferation of T cells was assessed by flow cytometry. Cells were acquired using a BD-FACSCanto II analyzer and analyses were performed using Flow-Jo software.
[0311] To assess Ag-specific proliferation CD4+ T cells, autologous to monocyte-derived DCs, were thawed, rested for 1-2 h at 37° C. and labelled with efluor-450 proliferation dye (Invitrogen), following Manufacturer's instructions. 150000 eFluor-labelled CD4+ T cells were plated in 96 round-bottom well plates in a final volume of 200p1 alone or in the presence of DCs (T: DC ratio of 10:1) transduced with LV-Iip33Ag/ΔNGFR or LVIip33Ag/IL-10 or control LV-Iip33-CLIP. After 6 days, proliferation of CD4+ T cells was assessed by flow cytometry. Cells were acquired using a BD-FACSCanto II analyzer and analyses were performed using Flow-Jo software.
[0312] Flow cytometry analysis. Phenotype murine BM-LVDC was determined by flow cytometry on day 8 at the end of differentiation. For the detection of cell surface antigens, the following monoclonal antibodies (mAbs) were used: anti-CD11c-V450 (e-bioscience), anti-CD86-Pe-Cy7 (BD Biosciences), anti-CD80-PerCPCy5.5 (BD Biosciences), anti-IAb-PE (BD Biosciences). OTII cells were identified using anti-CD4-Pe-Cy7 (BD Biosciences) and anti-CD45.2-Pacific Blue (BD Biosciences).
[0313] Phenotype of monocyte derived human LV-DC was determined by flow cytometry on day 7. For the detection of cell surface antigens the following monoclonal antibodies (mAbs) were used: anti-DC-SIGN-Pe (BD Biosciences), -CD14-FITC (BD Biosciences), -HLADR-APC-Cy7 (BD Biosciences), CD86-PercP-Cy5.5 (BD Biosciences), CD83-BV421 (BD Biosciences), DNGFR-APC (Miltenyi Biotec), CD11c-PE-CY7 (BD Biosciences). Cell surface expression of tolerogenic molecules was also determined: anti-HLAG-PE (ExBio), -ILT4-APC (R&D Systems), -CD163-PcPCy5.5 (BD Biosciences), -CD141-BV421 (BD Biosciences). Cell vitality was assessed using LIVE/DEAD Cell Viability Assays (Thermo Fisher), according to Manufacturer's instructions. To assess the frequency of IL-10-producing DCs, LV-DCs were stimulated for 14-16 h with LPS 200 ng/ml and IFNg 50 ng/ml plus Brefeldin A (10 μg/ml). Intracellular expression of IL-10 was determined as previously described (Levings JI 2001), using anti-IL-10-Pe (BD Pharmingen). To assess the frequency of IDO-espressing DCs, intracellular staining with anti-human IDO-Pe (e-bioscience) was performed after 20 min fixation with 2% Formaldeyde solution (Thermo Fisher) and 10 min Permeabilization with PBS 2% FBS containing 0.5% Saponin (Sigma).
[0314] For the detection of FOXP3 (clone 259D, Biolegend, USA) after surface staining, cells were fixed, permeabilized, and stained with the Foxp3 staining Buffer Set according to the manufacturer's instructions (eBioscience, USA). For the expression of Granzyme B (clone MHGB04, Invitrogen, USA) after surface staining, cells were fixed, permeabilized, and stained with the BD Cytofix/Cytoperm™ Kit according to the manufacturer's instructions (Cat. No. 554714, Biolegend, USA). Samples were acquired using BD-FACSCantoII or BD-LSR Fortessa analyzers and analyses were performed using Flow-Jo software.
[0315] Mice. C57Bl/6, female NOD (NOD/LtJ) and Balb/c mice were purchased (Charles River Laboratories) and housed in specific pathogen-free conditions. The inventors crossed and generated Foxp3 reporter mice in the inventors' laboratory. The inventors used age- and sex-matched littermates between 8 and 12 weeks of age. Chimeric mice were generated by transplanting CD45.1 (95%) and CD45.2 OTII/FirTiger (5%) BM cells into lethally irradiated CD45.1 mice. OTII/FirTiger CD4.sup.+ T cells are TCR transgenic cells recognizing OVA.sub.323-339 and expressing RFP and GFP as reporter genes for foxp3 and il10, respectively.
[0316] NOD mice were considered diabetic when blood glucose measurements were ≥250 mg/dl on two successive days as determined by a Bayer BREEZE Blood Glucose Monitoring System (Bayer). All procedures were reviewed and approved by the Institutional Animal Care and Use Committee (IACUC) at San Raffaele Institute, Milan (IUCAC 416 and 604).
[0317] GvHD model: Balb/c mice were lethally irradiated and intravenously injected with C57Bl/6 BM cells (10.sup.7) and splenocytes (5×10.sup.6). On day 2 mice were adoptively transferred with DC.sup.GFP DC.sup.IL-10 (2×10.sup.6), Weight loss and survival of mice were monitored.
[0318] Method to generate human Treg cells in vitro. To induce Ag-specific CD4+ Treg cells, T cells autologous to monocyte-derived DCs, were thawed, rested for 1-2 h at 37° C. and labelled with efluor-450 proliferation dye (Invitrogen), following Manufacturer's instructions. 10.sup.6 cells eFluor-labelled CD4+ T cells were plated in 24 well plate in a final volume of 2 ml in the presence of DCs (T: DC ratio of 10:1) transduced with LV-Iip33Ag/DNGFR, LVIip33Ag/IL-10, LVIip33Ag/IDO, or control LV-Iip33-CLIP. After 10 days, proliferation of CD4.sup.+ T cells was assessed by flow cytometry and in case of LVIip33Ag/IL-10 the presence of TR1 cells was assess by the co-expression of CD49b and LAG-3, and in case of LVIip33Ag/IDO the presence of FOXP3+ Treg was assessed by the co-expression of FOXP3 and CTLA-4, on proliferating cells. Cells were acquired using a BD-FACSCanto II analyzer and analyses were performed using Flow-Jo software.
[0319] Vpx-VLP production. Concentrated Vpx-incorporating viral-like particles (VLPs) were produced by Ca.sub.3PO.sub.4 transient two-plasmids (VSV-G expressing plasmid and the Simian Immunodeficiency Virus-derived packaging plasmid SIV3+) into 293T cells and concentrated by ultracentrifugation as described (86). Titer was estimated by limiting dilution. Titers ranged from 5×10.sup.8 to 6×10.sup.9 transducing units/ml.
[0320] T cell differentiation and suppression assay. 10.sup.6 CD4.sup.+ T cells were cultured with 10.sup.5 allogeneic DC (10:1, T:DC) in X-VIVO 15 medium (Lonza, Switzerland), supplemented with 5% human serum (Sigma Aldrich, CA, USA), and 100 [U/ml] penicillin/streptomycin (Lonza, Switzerland). After 10 days, primed T cells were collected and purified using CD4 Microbeads (Miltenyi Biotech, Germany). T cells stimulated with DC.sup.UT are referred to as T(DC.sup.UT) cells, while those stimulated with DC.sup.GFP as T(DC.sup.GFP) cells. T cells cultured with unstimulated DC.sup.IL-10 are referred to as T(DC.sup.IL-10) cells, while those cultured with LPS- or Poli I:C-stimulated DC.sup.IL-10 are referred to as T(stimDC.sup.IL-10) cells.
[0321] Primed T cells were stained Cell Proliferation Dye eFluor® 670 (eBioscience, CA, USA) and then plated with DC.sup.UT from the same donor used for priming (10:1, T:DC). After 3 days of stimulation, T cells were collected, washed, and proliferation was evaluated by flow cytometry. To evaluate the suppressive activity of T(DC.sup.IL-10) and T(stimDC.sup.IL-10) cells, we stained total CD4.sup.+ T cells (responder cells) autologous to T cells used in priming with Cell Proliferation Dye eFluor® 450 (eBioscience, CA, USA), and activated them with mature DC.sup.UT from the same donor used for priming. T(DC.sup.IL-10) or T(DC.sup.IL-10*) cells stained with Cell Proliferation Dye eFluor® 670 were added at a 1:1 ratio with responder cells (total T:DC ratio is 10:1). After 4 days, the percentages of divided responder T cells were calculated by proliferation dye dilution by flow cytometer.
[0322] DC stimulation. In some experiments, DC were collected at day 7 and re-plated alone or in the presence of the following stimulation: 1 μg/ml of LPS (Sigma Aldrich, CA, USA), 10.sup.8 cells/ml of Heat Killed Listeria monocytogenes (code tlrl-hklm, InvivoGen, CA, USA), 1 ug/ml of Flagellin S. typhimurium (code tlrl-stfla, InvivoGen, CA, USA), 10 ug/ml of Poli (I:C) (code tlrl-pic InvivoGen, CA, USA, 5 uM of ODN2006 (CpG) (Code tlrl-2006, InvivoGen, CA, USA or a mix of 10 ng/ml for each cytokine of IL-1b, TNF-a and IL-6 (R&D Systems, MN, USA). After 24 hours, supernatants were collected to evaluate the cytokine secretion profile by ELISA, and cells were analysed by flow cytometry.
[0323] Modulation of immune response in humanized mice. 2-5 days old NSG (NOD.Cg-Prkdc.sup.scid II2rg.sup.tm1WjI/SzJ, JAX mouse strain) mice were sub-lethally irradiated (1.5 cGy) and injected intrahepatically 5-7 hours later with 10.sup.5 CD34+ (purity ≥95%, Lonza), as previously described (Santoni de Sio et al. JACI 2018).
[0324] Percentages of human total and T cells in peripheral blood were monitored by flow cytometry starting from 8 weeks post-transplant. Once human engraftment was stable and T cell repopulation clearly detectable (usually around 11-13 weeks post-transplant), huMice were immunized by intravenous injection of 5×10.sup.6 allogeneic CD3− cells, magnetically isolated (Dynabeads CD3—Thermo Fisher Scientific) from human peripheral blood. One week later, human T cell percentages were assessed by flow cytometry, huMice randomly assigned to experimental groups and injected with 3×10.sup.5 untransduced dendritic cells (DC.sup.UT), or 3×10.sup.5 untransduced plus 3×10.sup.5 GFP or IL-10 transduced dendritic cells (DC.sup.GFP and DC.sup.IL-10, respectively), differentiated from CD14+ monocytes isolated from the same donor used for CD3-purification. T cell proliferation was assessed in peripheral blood by Ki67 staining.
[0325] Generation of packaging cell line CD47 hi and CD47 free. The Cas9 and sgRNA expressing plasmids previously described (87), were used to disrupt CD47 expression in 293T cells. The sequences of the CRISPR used to generate the sgRNA are: CD47A (CTACTGAAGTATACGTAAAGTGG) (SEQ ID NO:115), (CTTGTTTAGAGCTCCATCAAAGG) (SEQ ID NO:116), (ATCGAGCTAAAATATCGTGTTGG) (SEQ ID NO:117).
[0326] Gene disruption and mismatch-selective endonuclease assayGene disruption was performed by calcium phosphate-mediated transient transfection of the indicated amount of the desired sgRNA-expressing plasmid and the Cas9-expressing plasmid. The mismatch-selective endonuclease assay was used to measure the extent of mutations consequent to non-homologous end joining (NHEJ) at the Cas9 target sites, as described (88). PCR was performed using primers flanking the sgRNA binding site in in the CD47gene (fw: 5′-TTCCTTTCCAGGATCAGCTCAGC-3′(SEQ ID NO:118); rv: 5′-TTGATTCAAAGGAGTACCTATCCC-3′) (SEQ ID NO:119).
[0327] SIN RV genome transfer PGK.CD47 encoding for the gene synthesized human codon-optimized version of the CD47 cDNA (Genewiz) was exchanged with GFP into pRT43.3.PGK.GFP (BamHI-NotI)(89) for generating 293T CD47 high cells. 293T cells were transfected with pRT43.3.PGK.CD47, the packaging plasmid pCMV-Gag/Pol (Moloney Leukemia Virus), and pMD2.G, as described (89). 293T cells CD47 hi and CD47 free were used to generate LV as described above.
[0328] Statistical Analysis. Average values are reported as Mean±SEM. The inventors used Mann Whitney test and ANOVA test to determine the statistical significance of the data. The inventors defined significance as *P≤0.05, **P≤0.005, ***P≤0.0005, and ***P<0.0001. The inventors performed statistical calculations with the Prism program 5.0 (GraphPad Software, Inc.).
SEQUENCES
[0329] In the following proteins, the immunodominant peptides or epitopes are highlighted in BOLD and deamidated residues are highlighted in in grey
[0330] LV Constructs for Murine DC
TABLE-US-00003 Invariant chain (m-li, CD74) (DNA) (SEQ ID NO: 120) atggatgaccaacgcgacctcatctctaaccatgaacagttgcccatactgggcaaccgccctagagagccagaaaggtgcagc cgtggagctctgtacaccggtgtctctgtcctggtggctctgctcttggctgggcaggccaccactgcttacttcctgtaccagcaacag ggccgcctagacaagctgaccatcacctcccagaacctgcaactggagagccttcgcatgaagcttccgaaatctgccaaacctgt gagccagatgcggatggctactcccttgctgatgcgtccaatgtccatggataacatgctccttgggcctgtgaagaacgttaccaag tacggcaacatgacccaggaccatgtgatgcatctgctcacgaggtctggacccctggagtacccgcagctgaaggggaccttcc cagagaatctgaagcatcttaagaactccatggatggcgtgaactggaagatcttcgagagctggatgaagcagtggctcttgtttga gatgagcaagaactccctggaggagaagaagcccaccgaggctccacctaaagagccactggacatggaagacctatcttctg gcctgggagtgaccaggcaggaactgggtcaagtcaccctg Invariant chain (m-li, CD74) (protein) (SEQ ID NO: 121) MDDQRDLISNHEQLPILGNRPREPERCSRGALYTGVSVLVALLLAGQATTAYFLYQQQGRLD KLTITSQNLQLESLRMKLPKSAKPVSQMRMATPLLMRPMSMDNMLLGPVKNVTKYGNMTQD HVMHLLTRSGPLEYPQLKGTFPENLKHLKNSMDGVNWKIFESWMKQWLLFEMSKNSLEEKK PTEAPPKEPLDMEDLSSGLGVTRQELGQVTL Invariant chain fused in frame to: >OVA 315-353,STOP (DNA) (SEQ ID NO: 122) tgtggcatctcctcagcagagagcctgaagatatctcaagctgtccatgcagcacatgcagaaatcaatgaagcaggcagagagg tggtagggtcagcagaggctggagtggatgctgcaagctga OVA 315-353,STOP (protein) (epitope OVA.sub.323-339) (SEQ ID NO: 123) CGISSAESLKISQAVHAAHAEINEAGREVVGSAEAGVDAAS* >OVA 242-353.STOP (DNA) (SEQ ID NO: 124) tgcatgttggtgctgttgcctgatgaagtctcaggccttgagcagcttgagagtataatcaactttgaaaaactgactgaatggaccagt tctaacgttatggaagagaggaagatcaaagtgtacttacctcgcatgaagatggaggaaaaatacaacctcacatctgtcttaatg gctatgggcattactgacgtgtttagctcttcagccaatctgtctggcatctcctcagcagagagcctgaagatatctcaagctgtccat gcagcacatgcagaaatcaatgaagcaggcagagaggtggtagggtcagcagaggctggagtggatgctgccagctga OVA 242-353.STOP (protein) (epitopes: OVA.sub.257-264; OVA.sub.323-339) (SEQ ID NO: 125) CMLVLLPDEVSGLEQLESIINFEKLTEWTSSNVMEERKIKVYLPRMKMEEKYNLTSVLMAMGIT DVFSSSANLSGISSAESLKISQAVHAAHAEINEAGREVVGSAEAGVDAAS* >InsB 4-29.STOP (SEQ ID NO: 126) cagcacctttgtggttcccacctggtggaggctctctacctggtgtgtggggagcgtggcttcttctacacacccatgtaa InsB 4-29.STOP (protein) (epitope InsB.sub.9-23) (SEQ ID NO: 127) QHLCGSHLVEALYLVCGERGFFYTPM* >InsB 4-29R22E.STOP (DNA) (SEQ ID NO: 128) cagcacctttgtggttcccacctggtggaggctctctacctggtgtgtggggagcgtggcttcttctacacacccatgtaa InsB 4-29R22E.STOP (protein) (epitope InsB.sub.9-23R22E) (SEQ ID NO: 129) QHLCGSHLVEALYLVCGEEGFFYTPM* >GAD65 500-585 (DNA) (SEQ ID NO: 130) Cacacaaatgtctgcttctggtttgtacctcctagtttgcgcactctggaagacaatgaagagagaatgagccgcctctcaaaggtgg cgccagtgattaaagccagaatgatggagtatgggaccacaatggtcagctaccaacccttaggggacaaggtcaacttcttccgc atggtcatctcaaaccctgcagcaactcaccaagacattgacttccttattgaagaaatcgaacgcctcggacaagatttgt GAD65 500-585 (protein) (epitopes: GAD509-528; GAD .sub.524-543, GAD.sub.561-575) (SEQ ID NO: 131) HTNVCFWFVPPSLRTLEDNEERMSRLSKVAPVIKARMMEYGTTMVSYQPLGDKVNFFRMVI SNPAATHQDIDFLIEEIERLGQDL >GAD65 202-225 (DNA) (SEQ ID NO: 132) actaacatgttcacctatgagatcgcccctgtatttgtgctgctagaatatgttacactaaagaaaatgagataa GAD65 202-225 (protein) (epitope: GAD.sub.206-220) (SEQ ID NO: 133) TNMFTYEIAPVFVLLEYVTLKKMR >IGRP191-218(DNA) (SEQ ID NO: 134) gaggcctttgaacacactccaggagtccacatggccagcttgagtgtgtacctgaagaccaacgtcttcctcttcctgtttgcctaa IGRP195-214(protein) (epitope: IGRP.sub.195-214) (SEQ ID NO: 135) EAFEHTPGVHMASLSVYLKTNVFLFLFA W1E14 (DNA) (SEQ ID NO: 136) gaggtggaggaccctcaggtggcccagctggagctgggcggcggccctggcgccggcgacctgcagaccctggccctgtggag cagaatggaccagctggccaaggagctgaccgccgagtga WE14 (fusion protein) (combination N-ter C pep - ChrA) (SEQ ID NO: 137) EVEDPQVAQLELGGGPGAGDLQTLAL- WSRMDQLAKELTAE LV constructs for human DC Human invariant chain (hu-li, p33, clip) (DNA) (SEQ ID NO: 138) atggatgaccagcgcgaccttatctccaacaatgagcaactgcccatgctgggccggcgccctggggccccggagagcaagtgc agccgcggagccctgtacacaggcttttccatcctggtgactctgctcctcgctggccaggccaccaccgcctacttcctgtaccagc agcagggccggctggacaaactgacagtcacctcccagaacctgcagctggagaacctgcgcatgaagcttcccaagcctccca agcctgtgagcaagatgcgcatggccaccccgctgctgatgcaggcgctgcccatgggagccctgccccaggggcccatgcaga atgccaccaagtatggcaacatgacagaggaccatgtgatgcacctgctccagagtcactggaactggaggacccgtcttctggg ctgggtgtga Human invariant chain (hu-li, p33, clip) (PROTEIN) (SEQ ID NO: 139) MDDQRDLISNNEQLPMLGRRPGAPESKCSRGALYTGFSILVTLLLAGQATTAYFLYQQQGRL DKLTVTSQNLQLENLRMKLPKPPKPVSKMRMATPLLMQALPMGALPQGPMQNATKYGNMT EDHVMHLLQSHWNWRTRLLGWV* Replace Clip sequence with sequence encoding for the Ag of interest: huinsB 4-29 (DNA) (SEQ ID NO: 140) caacacctgtgcggctcacacctggtggaagctctctacctagtgtgcggggaacgaggcttcttctacacacccaag huinsB 4-29 (protein) (epitope InsB.sub.9-23) (SEQ ID NO: 141) QHLCGSHLVEALYLVCGERGFFYTPK huinsB 4-29 (-14E -21E -22E) (DNA) (SEQ ID NO: 142) caacacctgtgcggctcacacctggtggaagaactctacctagtgtgcggggaagaaggcttcttctacacacccaag huinsB 4-29 (-14E -21E -22E) (protein) (epitope InsB.sub.9-2314E-21E-22E) (SEQ ID NO: 143) QHLCGSHLVEELYLVCGEEGFFYTPK hu.PPI Pre-pro insulin71-96 (DNA) (epitope PPI.sub.71-96) (SEQ ID NO: 144) ggccctggtgcaggcagcctgcagcccttggccctggaggggtccctgcagaagcgtggcattgtggaacaatgctgt hu.PPI (protein) (epitope C19A3) (SEQ ID NO: 145) GPGAGSLQPLALEGSLQKRGIVEQCC hu.PPI Pre-pro insulin13-28(DNA) (PPI.sub.13-28) (SEQ ID NO: 146) ctgctggccctctggggacctgacccagccgcagcctttgtgaaccaa hu.PPI (protein) (epitope PPI.sub.17-24) (SEQ ID NO: 147) LLALWGPDPAAAFVNQ I-A2 801-821(DNA) (SEQ ID NO: 148) Gagagcggctgcaccgtcatcgtcatgctgaccccgctggtggaggatggtgtcaagcagtgt I-A2(protein) (epitopes: I-A2 .sub.805-820; I-A2.sub.806-814) (SEQ ID NO: 149) ESGCTVIVMLTPLVEDGVKQC a2-gliadin 51-80> (SEQ ID NO: 150) tctcagcagccctacctgcaactgcagccctttccacagcctgagctgccctatcctcagcctcagcctagctttccacctcagcag a2-gliadin 51-80>(protein) (epitope a2-g1i.sub.55-76) (SEQ ID NO: 151) SQQPYLQLQPFPQPELPYPQPQPSFPPQQ Tregitope289 (DNA) (SEQ ID NO: 152) Gaggagcagtacaacagcacctacagagtggtgagcgtgctgaccgtgctgcaccaggactgg Tregitope289 (protein) (SEQ ID NO: 153) EEQYNSTYRVVSVLTVLHQDW cloned into the following: -Mono-directional LV backbones LV.PGK.li (SEQ ID NO: 154) caggtggcacttttcggggaaatgtgcgcggaacccctatttgthatttttctaaatacattcaaatatgtatccgctcatgagacaataa ccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattccctiftttgcggcattttgcc ttcctgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggat ctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtat tatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacaga aaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttct gacaacgatcggaggaccgaaggagctaaccgctiftttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccgg agctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactg gcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggccc ttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaag ccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctc actgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtg aagatcctifttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaagg atcttcttgagatcctifttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaag agctaccaactctifttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccac cacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtctt accgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttg gagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcgg acaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtc ctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgc ggcctifttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttg agtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatac gcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcg caacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcg gataacaatttcacacaggaaacagctatgaccatgattacgccaagcgcgcaattaaccctcactaaagggaacaaaagctgg agctgcaagcttggccattgcatacgttgtatccatatcataatatgtacatttatattggctcatgtccaacattaccgccatgttgacatt gattattgactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaat ggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttc cattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattga cgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagt catcgctattaccatggtgatgcggifttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccc cattgacgtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatg ggcggtaggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccggggtctctctggttagaccagatctgagcctg ggagctctctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgt gactctggtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtggcgcccgaacagggacctgaaagcg aaagggaaaccagagctctctcgacgcaggactcggcttgctgaagcgcgcacggcaagaggcgaggggcggcgactggtga gtacgccaaaaattttgactagcggaggctagaaggagagagatgggtgcgagagcgtcagtattaagcgggggagaattagat cgcgatgggaaaaaattcggttaaggccagggggaaagaaaaaatataaattaaaacatatagtatgggcaagcagggagcta gaacgattcgcagttaatcctggcctgttagaaacatcagaaggctgtagacaaatactgggacagctacaaccatcccttcagac aggatcagaagaacttagatcattatataatacagtagcaaccctctattgtgtgcatcaaaggatagagataaaagacaccaagg aagctttagacaagatagaggaagagcaaaacaaaagtaagaccaccgcacagcaagcggccgctgatcttcagacctggag gaggagatatgagggacaattggagaagtgaattatataaatataaagtagtaaaaattgaaccattaggagtagcacccaccaa ggcaaagagaagagtggtgcagagagaaaaaagagcagtgggaataggagctttgttccttgggttcttgggagcagcaggaa gcactatgggcgcagcctcaatgacgctgacggtacaggccagacaattattgtctggtatagtgcagcagcagaacaatttgctga gggctattgaggcgcaacagcatctgttgcaactcacagtctggggcatcaagcagctccaggcaagaatcctggctgtggaaag atacctaaaggatcaacagctcctggggatttggggttgctctggaaaactcatttgcaccactgctgtgccttggaatgctagttgga gtaataaatctctggaacagatttggaatcacacgacctggatggagtgggacagagaaattaacaattacacaagcttaatacact ccttaattgaagaatcgcaaaaccagcaagaaaagaatgaacaagaattattggaattagataaatgggcaagtttgtggaattgg tttaacataacaaattggctgtggtatataaaattattcataatgatagtaggaggcttggtaggtttaagaatagtifttgctgtactttctat agtgaatagagttaggcagggatattcaccattatcgtttcagacccacctcccaaccccgaggggacccgacaggcccgaagga atagaagaagaaggtggagagagagacagagacagatccattcgattagtgaacggatctcgacggtatcggttaacttttaaaa gaaaaggggggattggggggtacagtgcaggggaaagaatagtagacataatagcaacagacatacaaactaaagaattaca aaaacaaattacaaaaattcaaaattttatcgatcacgagactagcctcgagaagcttgatatcgaattcccacggggttggggttgc gccttttccaaggcagccctgggtttgcgcagggacgcggctgctctgggcgtggttccgggaaacgcagcggcgccgaccctgq gtctcgcacattcttcacgtccgttcgcagcgtcacccggatcttcgccgctacccttgtgggccccccggcgacgcttcctgctccgcc cctaagtcgggaaggttccttgcggttcgcggcgtgccggacgtgacaaacggaagccgcacgtctcactagtaccctcgcagac ggacagcgccagggagcaatggcagcgcgccgaccgcgatgggctgtggccaatagcggctgctcagcggggcgcgccgag agcagcggccgggaaggggcggtgcgggaggcggggtgtggggcggtagtgtgggccctgttcctgcccgcgcggtgttccgca ttctgcaagcctccggagcgcacgtcggcagtcggctccctcgttgaccgaatcaccgacctctctccccagggggatccaccatg gatgaccaacgcgacctcatctctaaccatgaacagttgcccatactgggcaaccgccctagagagccagaaaggtgcagccgt ggagctctgtacaccggtgtctctgtcctggtggctctgctcttggctgggcaggccaccactgcttacttcctgtaccagcaacaggg ccgcctagacaagctgaccatcacctcccagaacctgcaactggagagccttcgcatgaagcttccgaaatctgccaaacctgtga gccagatgcggatggctactcccttgctgatgcgtccaatgtccatggataacatgctccttgggcctgtgaagaacgttaccaagta cggcaacatgacccaggaccatgtgatgcatctgctcacgaggtctggacccctggagtacccgcagctgaaggggaccttccca gagaatctgaagcatcttaagaactccatggatggcgtgaactggaagatcttcgagagctggatgaagcagtggctcttgtttgag atgagcaagaactccctggaggagaagaagcccaccgaggctccacctaaagagccactggacatggaagacctatcttctgg cctgggagtgaccaggcaggaactgggtcaagtcaccctgtgtggcatctcctcagcagagagcctgaagatatctcaagctgtcc atgcagcacatgcagaaatcaatgaagcaggcagagaggtggtagggtcagcagaggctggagtggatgctgcaagctgataa gtcgacaatcaacctctggattacaaaatttgtgaaagattgactggtattcttaactatgttgctccttttacgctatgtggatacgctgctt taatgcctttgtatcatgctattgcttcccgtatggctttcattttctcctccttgtataaatcctggttgctgtctctttatgaggagttgtggccc gttgtcaggcaacgtggcgtggtgtgcactgtgtttgctgacgcaacccccactggttggggcattgccaccacctgtcagctcctttcc gggactttcgctttccccctccctattgccacggcggaactcatcgccgcctgccttgcccgctgctggacaggggctcggctgttggg cactgacaattccgtggtgttgtcggggaagctgacgtcctttccatggctgctcgcctgtgttgccacctggattctgcgcgggacgtc cttctgctacgtcccttcggccctcaatccagcggaccttccttcccgcggcctgctgccggctctgcggcctcttccgcgtcttcgccttc gccctcagacgagtcggatctccctttgggccgcctccccgcctggaattcgagctcggtacctttaagaccaatgacttacaaggca gctgtagatcttagccactifttaaaagaaaaggggggactggaagggctaattcactcccaacgaagacaagatctgctifttgcttg tactgggtctctctggttagaccagatctgagcctgggagctctctggctaactagggaacccactgcttaagcctcaataaagcttgc cttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctggtaactagagatccctcagacccttttagtcagtgtggaaaatctcta gcagtagtagttcatgtcatcttattattcagtatttataacttgcaaagaaatgaatatcagagagtgagaggaacttgtttattgcagctt ataatggttacaaataaagcaatagcatcacaaatttcacaaataaagcattiftttcactgcattctagttgtggtttgtccaaactcatc aatgtatcttatcatgtctggctctagctatcccgcccctaactccgcccagttccgcccattctccgccccatggctgactaattffitttatt tatgcagaggccgaggccgcctcggcctctgagctattccagaagtagtgaggaggctiftttggaggcctaggcttttgcgtcgaga cgtacccaattcgccctatagtgagtcgtattacgcgcgctcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgtta cccaacttaatcgccttgcagcacatccccctttcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagt tgcgcagcctgaatggcgaatggcgcgacgcgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtga ccgctacacttgccagcgccctagcgcccgctcctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaa atcgggggctccctttagggttccgatttagtgctttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggc catcgccctgatagacggffittcgccctttgacgttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaac cctatctcggtctattcttttgatttataagggattttgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcga attttaacaaaatattaacgtttacaatttcc PGK.liAg.miR155T.miR146aT (SEQ ID NO: 155) caggtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataa ccctgataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattccctiftttgcggcattttgcc ttcctgffittgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggat ctcaacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtat tatcccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacaga aaagcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttct gacaacgatcggaggaccgaaggagctaaccgctiftttgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccgg agctgaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactg gcgaactacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggccc ttccggctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaag ccctcccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctc actgattaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtg aagatcctifttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaagg atcttcttgagatcctifttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaag agctaccaactctifttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccac cacttcaagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtctt accgggttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttg gagcgaacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcgg acaggtatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtc ctgtcgggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgc ggcctifttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttg agtgagctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatac gcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcg caacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcg gataacaatttcacacaggaaacagctatgaccatgattacgccaagcgcgcaattaaccctcactaaagggaacaaaagctgg agctgcaagcttggccattgcatacgttgtatccatatcataatatgtacatttatattggctcatgtccaacattaccgccatgttgacatt gattattgactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaat ggcccgcctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttc cattgacgtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattga cgtcaatgacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagt catcgctattaccatggtgatgcggifttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccc cattgacgtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatg ggcggtaggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccggggtctctctggttagaccagatctgagcctg ggagctctctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgt gactctggtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtggcgcccgaacagggacctgaaagcg aaagggaaaccagagctctctcgacgcaggactcggcttgctgaagcgcgcacggcaagaggcgaggggcggcgactggtga gtacgccaaaaattttgactagcggaggctagaaggagagagatgggtgcgagagcgtcagtattaagcgggggagaattagat cgcgatgggaaaaaattcggttaaggccagggggaaagaaaaaatataaattaaaacatatagtatgggcaagcagggagcta gaacgattcgcagttaatcctggcctgttagaaacatcagaaggctgtagacaaatactgggacagctacaaccatcccttcagac aggatcagaagaacttagatcattatataatacagtagcaaccctctattgtgtgcatcaaaggatagagataaaagacaccaagg aagctttagacaagatagaggaagagcaaaacaaaagtaagaccaccgcacagcaagcggccgctgatcttcagacctggag gaggagatatgagggacaattggagaagtgaattatataaatataaagtagtaaaaattgaaccattaggagtagcacccaccaa ggcaaagagaagagtggtgcagagagaaaaaagagcagtgggaataggagctttgttccttgggttcttgggagcagcaggaa gcactatgggcgcagcctcaatgacgctgacggtacaggccagacaattattgtctggtatagtgcagcagcagaacaatttgctga gggctattgaggcgcaacagcatctgttgcaactcacagtctggggcatcaagcagctccaggcaagaatcctggctgtggaaag atacctaaaggatcaacagctcctggggatttggggttgctctggaaaactcatttgcaccactgctgtgccttggaatgctagttgga gtaataaatctctggaacagatttggaatcacacgacctggatggagtgggacagagaaattaacaattacacaagcttaatacact ccttaattgaagaatcgcaaaaccagcaagaaaagaatgaacaagaattattggaattagataaatgggcaagtttgtggaattgg tttaacataacaaattggctgtggtatataaaattattcataatgatagtaggaggcttggtaggtttaagaatagthttgctgtactttctat agtgaatagagttaggcagggatattcaccattatcgtttcagacccacctcccaaccccgaggggacccgacaggcccgaagga atagaagaagaaggtggagagagagacagagacagatccattcgattagtgaacggatctcgacggtatcggttaacttttaaaa gaaaaggggggattggggggtacagtgcaggggaaagaatagtagacataatagcaacagacatacaaactaaagaattaca aaaacaaattacaaaaattcaaaattttatcgatcacgagactagcctcgagaagcttgatatcgaattcccacggggttggggttgc gccttttccaaggcagccctgggtttgcgcagggacgcggctgctctgggcgtggttccgggaaacgcagcggcgccgaccctgo gtctcgcacattcttcacgtccgttcgcagcgtcacccggatcttcgccgctacccttgtgggccccccggcgacgcttcctgctccgcc cctaagtcgggaaggttccttgcggttcgcggcgtgccggacgtgacaaacggaagccgcacgtctcactagtaccctcgcagac ggacagcgccagggagcaatggcagcgcgccgaccgcgatgggctgtggccaatagcggctgctcagcggggcgcgccgag agcagcggccgggaaggggcggtgcgggaggcggggtgtggggcggtagtgtgggccctgttcctgcccgcgcggtgttccgca ttctgcaagcctccggagcgcacgtcggcagtcggctccctcgttgaccgaatcaccgacctctctccccagggggatccaccatg gatgaccaacgcgacctcatctctaaccatgaacagttgcccatactgggcaaccgccctagagagccagaaaggtgcagccgt ggagctctgtacaccggtgtctctgtcctggtggctctgctcttggctgggcaggccaccactgcttacttcctgtaccagcaacaggg ccgcctagacaagctgaccatcacctcccagaacctgcaactggagagccttcgcatgaagcttccgaaatctgccaaacctgtga gccagatgcggatggctactcccttgctgatgcgtccaatgtccatggataacatgctccttgggcctgtgaagaacgttaccaagta cggcaacatgacccaggaccatgtgatgcatctgctcacgaggtctggacccctggagtacccgcagctgaaggggaccttccca gagaatctgaagcatcttaagaactccatggatggcgtgaactggaagatcttcgagagctggatgaagcagtggctcttgtttgag atgagcaagaactccctggaggagaagaagcccaccgaggctccacctaaagagccactggacatggaagacctatcttctgg cctgggagtgaccaggcaggaactgggtcaagtcaccctgtgtggcatctcctcagcagagagcctgaagatatctcaagctgtcc atgcagcacatgcagaaatcaatgaagcaggcagagaggtggtagggtcagcagaggctggagtggatgctgcaagctgataa gtcgacaatcaacctctggattacaaaatttgtgaaagattgactggtattcttaactatgttgctccttttacgctatgtggatacgctgctt taatgcctttgtatcatgctattgcttcccgtatggctttcattttctcctccttgtataaatcctggttgctgtctctttatgaggagttgtggccc gttgtcaggcaacgtggcgtggtgtgcactgtgtttgctgacgcaacccccactggttggggcattgccaccacctgtcagctcctttcc gggactttcgctttccccctccctattgccacggcggaactcatcgccgcctgccttgcccgctgctggacaggggctcggctgttggg cactgacaattccgtggtgttgtcggggaagctgacgtcctttccatggctgctcgcctgtgttgccacctggattctgcgcgggacgtc cttctgctacgtcccttcggccctcaatccagcggaccttccttcccgcggcctgctgccggctctgcggcctcttccgcgtcttcgccttc gccctcagacgagtcggatctccctttgggccgcctccccgcctggaattcgagctcgctagctaacccctatcacaattagcattaa cgatcccctatcacaattagcattaaaccggtcccctatcacaattagcattaatcaccccctatcacaattagcattaacccggggta aaacccatggaattcagttctcacgataacccatggaattcagttctcaacgcgtaacccatggaattcagttctcatcacaa cccatggaattcagttctcaggtacctttaagaccaatgacttacaaggcagctgtagatcttagccactifttaaaagaaaagggg ggactggaagggctaattcactcccaacgaagacaagatctgctifttgcttgtactgggtctctctggttagaccagatctgagcctgg gagctctctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtg actctggtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtagtagttcatgtcatcttattattcagtatttata acttgcaaagaaatgaatatcagagagtgagaggaacttgtttattgcagcttataatggttacaaataaagcaatagcatcacaaat ttcacaaataaagcattiftttcactgcattctagttgtggtttgtccaaactcatcaatgtatcttatcatgtctggctctagctatcccgcccc taactccgcccagttccgcccattctccgccccatggctgactaattffitttatttatgcagaggccgaggccgcctcggcctctgagct attccagaagtagtgaggaggctffittggaggcctaggcttttgcgtcgagacgtacccaattcgccctatagtgagtcgtattacgcg cgctcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctttcgc cagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatggcgcgacgcgc cctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgctcctt tcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgcttta cggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggiftttcgccctttgacgtt ggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattttg ccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcc Bi-directional LV backbones bd.ΔNGFR.PGK.GFP (SEQ ID NO: 156) aaatttcacaaataaagcattiftttcactgcattctagttgtggtttgtccaaactcatcaatgtatcttatcatgtctggctctagctatcccg cccctaactccgcccagttccgcccattctccgccccatggctgactaattifttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggctffittggaggcctaggcttttgcgtcgagacgtacccaattcgccctatagtgagtcgtatta cgcgcgctcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctt tcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatggcgcgacg cgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgct cctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgc tttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggiftttcgccctttgac gttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattt tgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcccag gtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccct gataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattccctiftttgcggcattttgccttcc tgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctc aacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaa agcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgac aacgatcggaggaccgaaggagctaaccgctffittgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagct gaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcga actacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccg gctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctc ccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactga ttaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagat cctifttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttct tgagatcctifttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagcta ccaactctifttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttc aagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgg gttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcg aacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacagg tatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcg ggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctt tttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtga gctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatacgcaaa ccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacg caattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataa caatttcacacaggaaacagctatgaccatgattacgccaagcgcgcaattaaccctcactaaagggaacaaaagctggagctg caagcttggccattgcatacgttgtatccatatcataatatgtacatttatattggctcatgtccaacattaccgccatgttgacattgattatt gactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaatggcccg cctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttccattgac gtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattgacgtcaat gacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagtcatcgct attaccatggtgatgcggifttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccccattgac gtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatgggcggta ggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccggggtctctctggttagaccagatctgagcctgggagctc tctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctg gtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtggcgcccgaacagggacctgaaagcgaaaggg aaaccagagctctctcgacgcaggactcggcttgctgaagcgcgcacggcaagaggcgaggggcggcgactggtgagtacgc caaaaattttgactagcggaggctagaaggagagagatgggtgcgagagcgtcagtattaagcgggggagaattagatcgcgat gggaaaaaattcggttaaggccagggggaaagaaaaaatataaattaaaacatatagtatgggcaagcagggagctagaacg attcgcagttaatcctggcctgttagaaacatcagaaggctgtagacaaatactgggacagctacaaccatcccttcagacaggatc agaagaacttagatcattatataatacagtagcaaccctctattgtgtgcatcaaaggatagagataaaagacaccaaggaagcttt agacaagatagaggaagagcaaaacaaaagtaagaccaccgcacagcaagcggccgctgatcttcagacctggaggagga gatatgagggacaattggagaagtgaattatataaatataaagtagtaaaaattgaaccattaggagtagcacccaccaaggcaa agagaagagtggtgcagagagaaaaaagagcagtgggaataggagctttgttccttgggttcttgggagcagcaggaagcacta tgggcgcagcctcaatgacgctgacggtacaggccagacaattattgtctggtatagtgcagcagcagaacaatttgctgagggct attgaggcgcaacagcatctgttgcaactcacagtctggggcatcaagcagctccaggcaagaatcctggctgtggaaagatacct aaaggatcaacagctcctggggatttggggttgctctggaaaactcatttgcaccactgctgtgccttggaatgctagttggagtaata aatctctggaacagattggaatcacacgacctggatggagtgggacagagaaattaacaattacacaagcttaatacactccttaat tgaagaatcgcaaaaccagcaagaaaagaatgaacaagaattattggaattagataaatgggcaagtttgtggaattggtttaaca taacaaattggctgtggtatataaaattattcataatgatagtaggaggcttggtaggtttaagaatagtifttgctgtactttctatagtgaa tagagttaggcagggatattcaccattatcgtttcagacccacctcccaaccccgaggggacccgacaggcccgaaggaatagaa gaagaaggtggagagagagacagagacagatccattcgattagtgaacggatctcgacggtatcggttaacttttaaaagaaaag gggggattggggggtacagtgcaggggaaagaatagtagacataatagcaacagacatacaaactaaagaattacaaaaaca aattacaaaaattcaaaattttatcgatcacgagactagcctcgagagatctgatcataatcagccataccacatttgtagaggifttac ttgctttaaaaaacctcccacacctccccctgaacctgaaacataaaatgaatgcaattgttgttgttaacttgtttattgcagcttataatg gttacaaataaggcaatagcatcacaaatttcacaaataaggcattffittcactgcattctagttttggtttgtccaaactcatcaatgtat cttatcatgtctggatctcaaatccctcggaagctgcgcctgtcatcgaattcctgcagcccggtgcatgactaagctagctcagttagc ctcccccatctcccctagaggatccccctgttccacctcttgaaggctatgtaggccacaaggcccacaaccacagcagcc aggatggagcaatagacagggatgaggttgtcggtggtgcctcgggtcaccacgggctgggagctgcccatcactgtg gtcaccacacctgccaccgtgctggctatgaggtcttgttctggaggtgcctcaggctcctgggtgctgggggctgtgctg tccgagccctctgggggtgtggaccgtgtaatccaacggccagggatctcctcgcactcggcgtcggcccagcgtgtgcactc gcggagctggcgctcggtgtcctcgcacacggtgcagggcaggcacgggtccacgtggttggcctcgtcggaatacgtgccgtcg gggcactcctcgcacacggtgttctgcttgtcctggcaggagaacacgaggcccgagcccgcctcgcacacgcggcacgcctcg cagcgcccagtcgtctcatcctggtagtagccgtaggcgcagcggcacacggcgtcgtcggcctccacgcacggcgccgacatg ctctggagccccacgcactcggtgcacggcttgcacggctcggtcgcgctcaccacgtcggagaacgtcacgctgtccaggcagg gctcacacacggtctggttggctccacaaggctgggccacaccctcgcccaggttgcaggctttgcagcactcaccgctgtgtgtgta caggcctgtggggcatgcctccttggcacctccaagggacacccccagaagcagcaacagcagcaggcgcggcccgtccatgg cgcggccggtggcacctgcccccatcgcccgcctcccgcggcagcgctcgacttccagctcggtccgctttgcggactgatggggc tgcgctgcgctgcgctccagcgccccccctgcccgccggagctggccgcggcccgaattccgcggaggctggatcggtcccggtg tcttctatggaggtcaaaacagcgtggatggcgtctccaggcgatctgacggttcactaaacgagctctgcttatataggcctcccacc gtacacgcctaccctcgagaagcttgatatcgaattcccacggggttggggttgcgccttttccaaggcagccctgggtttgcgcagg gacgcggctgctctgggcgtggttccgggaaacgcagcggcgccgaccctgggtctcgcacattcttcacgtccgttcgcagcgtca cccggatcttcgccgctacccttgtgggccccccggcgacgcttcctgctccgcccctaagtcgggaaggttccttgcggttcgcggc gtgccggacgtgacaaacggaagccgcacgtctcactagtaccctcgcagacggacagcgccagggagcaatggcagcgcgc cgaccgcgatgggctgtggccaatagcggctgctcagcggggcgcgccgagagcagcggccgggaaggggcggtgcgggag gcggggtgtggggcggtagtgtgggccctgttcctgcccgcgcggtgttccgcattctgcaagcctccggagcgcacgtcggcagtc ggctccctcgttgaccgaatcaccgacctctctccccagggggatccaccggtcgccaccatggtgagcaagggcgaggagctgtt caccggggtggtgcccatcctggtcgagctggacggcgacgtaaacggccacaagttcagcgtgtccggcgagggcgagggcg atgccacctacggcaagctgaccctgaagttcatctgcaccaccggcaagctgcccgtgccctggcccaccctcgtgaccaccctg acctacggcgtgcagtgcttcagccgctaccccgaccacatgaagcagcacgacttcttcaagtccgccatgcccgaaggctacgt ccaggagcgcaccatcttcttcaaggacgacggcaactacaagacccgcgccgaggtgaagttcgagggcgacaccctggtga accgcatcgagctgaagggcatcgacttcaaggaggacggcaacatcctggggcacaagctggagtacaactacaacagcca caacgtctatatcatggccgacaagcagaagaacggcatcaaggtgaacttcaagatccgccacaacatcgaggacggcagcg tgcagctcgccgaccactaccagcagaacacccccatcggcgacggccccgtgctgctgcccgacaaccactacctgagcacc cagtccgccctgagcaaagaccccaacgagaagcgcgatcacatggtcctgctggagttcgtgaccgccgccgggatcactctcg gcatggacgagctgtacaagtaaagcggccgcgtcgacaatcaacctctggattacaaaatttgtgaaagattgactggtattcttaa ctatgttgctccttttacgctatgtggatacgctgctttaatgcctttgtatcatgctattgcttcccgtatggctttcattttctcctccttgtataa atcctggttgctgtctctttatgaggagttgtggcccgttgtcaggcaacgtggcgtggtgtgcactgtgtttgctgacgcaacccccact ggttggggcattgccaccacctgtcagctcctttccgggactttcgctttccccctccctattgccacggcggaactcatcgccgcctgc cttgcccgctgctggacaggggctcggctgttgggcactgacaattccgtggtgttgtcggggaagctgacgtcctttccatggctgctc gcctgtgttgccacctggattctgcgcgggacgtccttctgctacgtcccttcggccctcaatccagcggaccttccttcccgcggcctg ctgccggctctagagcctcttccgcgtcttcgccttcccgggtcgagctcggtacctttaagaccaatgacttacaaggcagctgtaga tcttagccactifttaaaagaaaaggggggactggaagggctaattcactcccaacgaagacaagatctgctifttgcttgtactgggt ctctctggttagaccagatctgagcctgggagctctctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtg cttcaagtagtgtgtgcccgtctgttgtgtgactctggtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtag tagttcatgtcatcttattattcagtatttataacttgcaaagaaatgaatatcagagagtgagaggaacttgthattgcagcttataatggt tacaaataaagcaatagcatcac bd.IL10.PGK.GFP (SEQ ID NO: 157) aaatttcacaaataaagcattiftttcactgcattctagttgtggtttgtccaaactcatcaatgtatcttatcatgtctggctctagctatcccg cccctaactccgcccagttccgcccattctccgccccatggctgactaattifttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggctiftttggaggcctaggcttttgcgtcgagacgtacccaattcgccctatagtgagtcgtatta cgcgcgctcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctt tcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatggcgcgacg cgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgct cctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgc tttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggthttcgccctttgac gttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattt tgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcccag gtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccct gataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattccctiftttgcggcattttgccttcc tgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctc aacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaa agcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgac aacgatcggaggaccgaaggagctaaccgctffittgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagct gaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcga actacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccg gctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctc ccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactga ttaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagat cctifttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttct tgagatcctifttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagcta ccaactctifttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttc aagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgg gttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcg aacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacagg tatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcg ggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctt tttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtga gctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatacgcaaa ccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacg caattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataa caatttcacacaggaaacagctatgaccatgattacgccaagcgcgcaattaaccctcactaaagggaacaaaagctggagctg caagcttggccattgcatacgttgtatccatatcataatatgtacatttatattggctcatgtccaacattaccgccatgttgacattgattatt gactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaatggcccg cctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttccattgac gtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattgacgtcaat gacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagtcatcgct attaccatggtgatgcggifttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccccattgac gtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatgggcggta ggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccggggtctctctggttagaccagatctgagcctgggagctc tctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctg gtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtggcgcccgaacagggacctgaaagcgaaaggg aaaccagagctctctcgacgcaggactcggcttgctgaagcgcgcacggcaagaggcgaggggcggcgactggtgagtacgc caaaaattttgactagcggaggctagaaggagagagatgggtgcgagagcgtcagtattaagcgggggagaattagatcgcgat gggaaaaaattcggttaaggccagggggaaagaaaaaatataaattaaaacatatagtatgggcaagcagggagctagaacg attcgcagttaatcctggcctgttagaaacatcagaaggctgtagacaaatactgggacagctacaaccatcccttcagacaggatc agaagaacttagatcattatataatacagtagcaaccctctattgtgtgcatcaaaggatagagataaaagacaccaaggaagcttt agacaagatagaggaagagcaaaacaaaagtaagaccaccgcacagcaagcggccgctgatcttcagacctggaggagga gatatgagggacaattggagaagtgaattatataaatataaagtagtaaaaattgaaccattaggagtagcacccaccaaggcaa agagaagagtggtgcagagagaaaaaagagcagtgggaataggagctttgttccttgggttcttgggagcagcaggaagcacta tgggcgcagcctcaatgacgctgacggtacaggccagacaattattgtctggtatagtgcagcagcagaacaatttgctgagggct attgaggcgcaacagcatctgttgcaactcacagtctggggcatcaagcagctccaggcaagaatcctggctgtggaaagatacct aaaggatcaacagctcctggggatttggggttgctctggaaaactcatttgcaccactgctgtgccttggaatgctagttggagtaata aatctctggaacagattggaatcacacgacctggatggagtgggacagagaaattaacaattacacaagcttaatacactccttaat tgaagaatcgcaaaaccagcaagaaaagaatgaacaagaattattggaattagataaatgggcaagtttgtggaattggtttaaca taacaaattggctgtggtatataaaattattcataatgatagtaggaggcttggtaggtttaagaatagtifttgctgtactttctatagtgaa tagagttaggcagggatattcaccattatcgtttcagacccacctcccaaccccgaggggacccgacaggcccgaaggaatagaa gaagaaggtggagagagagacagagacagatccattcgattagtgaacggatctcgacggtatcggttaacttttaaaagaaaag gggggattggggggtacagtgcaggggaaagaatagtagacataatagcaacagacatacaaactaaagaattacaaaaaca aattacaaaaattcaaaattttatcgatcacgagactagcctcgagagatctgatcataatcagccataccacatttgtagaggifttac ttgctttaaaaaacctcccacacctccccctgaacctgaaacataaaatgaatgcaattgttgttgttaacttgtttattgcagcttataatg gttacaaataaggcaatagcatcacaaatttcacaaataaggcattiftttcactgcattctagttttggthgtccaaactcatcaatgtat cttatcatgtctggatctcaaatccctcggaagctgcgcctgtcatcgaattcctgcagcccggtgcatgactaagctagcagttcagt tccggatcttcatggtcatgtaggcctcgatgtagttgatgaagatgtcgaactcgctcatggccttgtagatgcccttttcct gcagcttgttgaaggcgtttttgacctgttccacggccttgctcttgttctcgcagggcagaaatctgtggcaccgcctcag ccgcagccgcagggttttcaggttctcgcccaggctgttcacgtgggccttgatgtcggggtcctggttctcggcctgggg catcacttcttccaggtagaactggatcatctcgctcagggcctggcagcccaggtagcccttgaaatcttccagcaggctctctttca gcagcaggttgtccagctggtccttcatctggaagaatgttttcactctgctgaaggcgtccctcaggtcccgcagcatgttgggcagg ttgccggggaagtgggtgcagctgttctcgctctgggtgccctggccaggagaggctctgacgccggtcagcagcaccaggcagc acagcagggcggagctgtgcatagtcggtccgctttgcggactgatggggctgcgctgcgctgcgctccagcgccccccctgcccg ccggagctggccgcggcccgaattccgcggaggctggatcggtcccggtgtcttctatggaggtcaaaacagcgtggatggcgtct ccaggcgatctgacggttcactaaacgagctctgcttatataggcctcccaccgtacacgcctaccctcgagaagcttgatatcgaat tcccacggggttggggttgcgccttttccaaggcagccctgggtttgcgcagggacgcggctgctctgggcgtggttccgggaaacg cagcggcgccgaccctgggtctcgcacattcttcacgtccgttcgcagcgtcacccggatcttcgccgctacccttgtgggccccccg gcgacgcttcctgctccgcccctaagtcgggaaggttccttgcggttcgcggcgtgccggacgtgacaaacggaagccgcacgtct cactagtaccctcgcagacggacagcgccagggagcaatggcagcgcgccgaccgcgatgggctgtggccaatagcggctgct cagcggggcgcgccgagagcagcggccgggaaggggcggtgcgggaggcggggtgtggggcggtagtgtgggccctgttcct gcccgcgcggtgttccgcattctgcaagcctccggagcgcacgtcggcagtcggctccctcgttgaccgaatcaccgacctctctcc ccagggggatccaccatggatgaccaacgcgacctcatctctaaccatgaacagttgcccatactgggcaaccgccctagagag ccagaaaggtgcagccgtggagctctgtacaccggtgtctctgtcctggtggctctgctcttggctgggcaggccaccactgcttactt cctgtaccagcaacagggccgcctagacaagctgaccatcacctcccagaacctgcaactggagagccttcgcatgaagcttccg aaatctgccaaacctgtgagccagatgcggatggctactcccttgctgatgcgtccaatgtccatggataacatgctccttgggcctgt gaagaacgttaccaagtacggcaacatgacccaggaccatgtgatgcatctgctcacgaggtctggacccctggagtacccgcag ctgaaggggaccttcccagagaatctgaagcatcttaagaactccatggatggcgtgaactggaagatcttcgagagctggatgaa gcagtggctcttgtttgagatgagcaagaactccctggaggagaagaagcccaccgaggctccacctaaagagccactggacat ggaagacctatcttctggcctgggagtgaccaggcaggaactgggtcaagtcaccctgtgcatgttggtgctgttgcctgatgaagtct caggccttgagcagcttgagagtataatcaactttgaaaaactgactgaatggaccagttctaacgttatggaagagaggaagatc aaagtgtacttacctcgcatgaagatggaggaaaaatacaacctcacatctgtcttaatggctatgggcattactgacgtgtttagctct tcagccaatctgtctggcatctcctcagcagagagcctgaagatatctcaagctgtccatgcagcacatgcagaaatcaatgaagc aggcagagaggtggtagggtcagcagaggctggagtggatgctgccacctgataagtcgacaatcaacctctggattacaaaattt gtgaaagattgactggtattcttaactatgttgctccttttacgctatgtggatacgctgctttaatgcctttgtatcatgctattgcttcccgtat ggctttcattttctcctccttgtataaatcctggttgctgtctctttatgaggagttgtggcccgttgtcaggcaacgtggcgtggtgtgcactg tgtttgctgacgcaacccccactggttggggcattgccaccacctgtcagctcctttccgggactttcgctttccccctccctattgccacg gcggaactcatcgccgcctgccttgcccgctgctggacaggggctcggctgttgggcactgacaattccgtggtgttgtcggggaag ctgacgtcctttccatggctgctcgcctgtgttgccacctggattctgcgcgggacgtccttctgctacgtcccttcggccctcaatccagc ggaccttccttcccgcggcctgctgccggctctagagcctcttccgcgtcttcgccttcccgggtcgagctcggtacctttaagaccaat gacttacaaggcagctgtagatcttagccactifttaaaagaaaaggggggactggaagggctaattcactcccaacgaagacaa gatctgctifttgcttgtactgggtctctctggttagaccagatctgagcctgggagctctctggctaactagggaacccactgcttaagc ctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctggtaactagagatccctcagacccttttagtca gtgtggaaaatctctagcagtagtagttcatgtcatcttattattcagtatttataacttgcaaagaaatgaatatcagagagtgagagga acttgtttattgcagcttataatggttacaaataaagcaatagcatcac bd.huIDO.PGK.liAg (SEQ ID NO: 158) aaatttcacaaataaagcattiftttcactgcattctagttgtggtttgtccaaactcatcaatgtatcttatcatgtctggctctagctatcccg cccctaactccgcccagttccgcccattctccgccccatggctgactaattifttttatttatgcagaggccgaggccgcctcggcctctg agctattccagaagtagtgaggaggctffittggaggcctaggcttttgcgtcgagacgtacccaattcgccctatagtgagtcgtatta cgcgcgctcactggccgtcgttttacaacgtcgtgactgggaaaaccctggcgttacccaacttaatcgccttgcagcacatccccctt tcgccagctggcgtaatagcgaagaggcccgcaccgatcgcccttcccaacagttgcgcagcctgaatggcgaatggcgcgacg cgccctgtagcggcgcattaagcgcggcgggtgtggtggttacgcgcagcgtgaccgctacacttgccagcgccctagcgcccgct cctttcgctttcttcccttcctttctcgccacgttcgccggctttccccgtcaagctctaaatcgggggctccctttagggttccgatttagtgc tttacggcacctcgaccccaaaaaacttgattagggtgatggttcacgtagtgggccatcgccctgatagacggthttcgccctttgac gttggagtccacgttctttaatagtggactcttgttccaaactggaacaacactcaaccctatctcggtctattcttttgatttataagggattt tgccgatttcggcctattggttaaaaaatgagctgatttaacaaaaatttaacgcgaattttaacaaaatattaacgtttacaatttcccag gtggcacttttcggggaaatgtgcgcggaacccctatttgtttatttttctaaatacattcaaatatgtatccgctcatgagacaataaccct gataaatgcttcaataatattgaaaaaggaagagtatgagtattcaacatttccgtgtcgcccttattccctiftttgcggcattttgccttcc tgtttttgctcacccagaaacgctggtgaaagtaaaagatgctgaagatcagttgggtgcacgagtgggttacatcgaactggatctc aacagcggtaagatccttgagagttttcgccccgaagaacgttttccaatgatgagcacttttaaagttctgctatgtggcgcggtattat cccgtattgacgccgggcaagagcaactcggtcgccgcatacactattctcagaatgacttggttgagtactcaccagtcacagaaa agcatcttacggatggcatgacagtaagagaattatgcagtgctgccataaccatgagtgataacactgcggccaacttacttctgac aacgatcggaggaccgaaggagctaaccgctffittgcacaacatgggggatcatgtaactcgccttgatcgttgggaaccggagct gaatgaagccataccaaacgacgagcgtgacaccacgatgcctgtagcaatggcaacaacgttgcgcaaactattaactggcga actacttactctagcttcccggcaacaattaatagactggatggaggcggataaagttgcaggaccacttctgcgctcggcccttccg gctggctggtttattgctgataaatctggagccggtgagcgtgggtctcgcggtatcattgcagcactggggccagatggtaagccctc ccgtatcgtagttatctacacgacggggagtcaggcaactatggatgaacgaaatagacagatcgctgagataggtgcctcactga ttaagcattggtaactgtcagaccaagtttactcatatatactttagattgatttaaaacttcatttttaatttaaaaggatctaggtgaagat cctifttgataatctcatgaccaaaatcccttaacgtgagttttcgttccactgagcgtcagaccccgtagaaaagatcaaaggatcttct tgagatcctifttttctgcgcgtaatctgctgcttgcaaacaaaaaaaccaccgctaccagcggtggtttgtttgccggatcaagagcta ccaactctifttccgaaggtaactggcttcagcagagcgcagataccaaatactgtccttctagtgtagccgtagttaggccaccacttc aagaactctgtagcaccgcctacatacctcgctctgctaatcctgttaccagtggctgctgccagtggcgataagtcgtgtcttaccgg gttggactcaagacgatagttaccggataaggcgcagcggtcgggctgaacggggggttcgtgcacacagcccagcttggagcg aacgacctacaccgaactgagatacctacagcgtgagctatgagaaagcgccacgcttcccgaagggagaaaggcggacagg tatccggtaagcggcagggtcggaacaggagagcgcacgagggagcttccagggggaaacgcctggtatctttatagtcctgtcg ggtttcgccacctctgacttgagcgtcgatttttgtgatgctcgtcaggggggcggagcctatggaaaaacgccagcaacgcggcctt tttacggttcctggccttttgctggccttttgctcacatgttctttcctgcgttatcccctgattctgtggataaccgtattaccgcctttgagtga gctgataccgctcgccgcagccgaacgaccgagcgcagcgagtcagtgagcgaggaagcggaagagcgcccaatacgcaaa ccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacg caattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataa caatttcacacaggaaacagctatgaccatgattacgccaagcgcgcaattaaccctcactaaagggaacaaaagctggagctg caagcttggccattgcatacgttgtatccatatcataatatgtacatttatattggctcatgtccaacattaccgccatgttgacattgattatt gactagttattaatagtaatcaattacggggtcattagttcatagcccatatatggagttccgcgttacataacttacggtaaatggcccg cctggctgaccgcccaacgacccccgcccattgacgtcaataatgacgtatgttcccatagtaacgccaatagggactttccattgac gtcaatgggtggagtatttacggtaaactgcccacttggcagtacatcaagtgtatcatatgccaagtacgccccctattgacgtcaat gacggtaaatggcccgcctggcattatgcccagtacatgaccttatgggactttcctacttggcagtacatctacgtattagtcatcgct attaccatggtgatgcggifttggcagtacatcaatgggcgtggatagcggtttgactcacggggatttccaagtctccaccccattgac gtcaatgggagtttgttttggcaccaaaatcaacgggactttccaaaatgtcgtaacaactccgccccattgacgcaaatgggcggta ggcgtgtacggtgggaggtctatataagcagagctcgtttagtgaaccggggtctctctggttagaccagatctgagcctgggagctc tctggctaactagggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctg gtaactagagatccctcagacccttttagtcagtgtggaaaatctctagcagtggcgcccgaacagggacctgaaagcgaaaggg aaaccagagctctctcgacgcaggactcggcttgctgaagcgcgcacggcaagaggcgaggggcggcgactggtgagtacgc caaaaattttgactagcggaggctagaaggagagagatgggtgcgagagcgtcagtattaagcgggggagaattagatcgcgat gggaaaaaattcggttaaggccagggggaaagaaaaaatataaattaaaacatatagtatgggcaagcagggagctagaacg attcgcagttaatcctggcctgttagaaacatcagaaggctgtagacaaatactgggacagctacaaccatcccttcagacaggatc agaagaacttagatcattatataatacagtagcaaccctctattgtgtgcatcaaaggatagagataaaagacaccaaggaagcttt agacaagatagaggaagagcaaaacaaaagtaagaccaccgcacagcaagcggccgctgatcttcagacctggaggagga gatatgagggacaattggagaagtgaattatataaatataaagtagtaaaaattgaaccattaggagtagcacccaccaaggcaa agagaagagtggtgcagagagaaaaaagagcagtgggaataggagctttgttccttgggttcttgggagcagcaggaagcacta tgggcgcagcctcaatgacgctgacggtacaggccagacaattattgtctggtatagtgcagcagcagaacaatttgctgagggct attgaggcgcaacagcatctgttgcaactcacagtctggggcatcaagcagctccaggcaagaatcctggctgtggaaagatacct aaaggatcaacagctcctggggatttggggttgctctggaaaactcatttgcaccactgctgtgccttggaatgctagttggagtaata aatctctggaacagattggaatcacacgacctggatggagtgggacagagaaattaacaattacacaagcttaatacactccttaat tgaagaatcgcaaaaccagcaagaaaagaatgaacaagaattattggaattagataaatgggcaagtttgtggaattggtttaaca taacaaattggctgtggtatataaaattattcataatgatagtaggaggcttggtaggtttaagaatagthttgctgtactttctatagtgaa tagagttaggcagggatattcaccattatcgtttcagacccacctcccaaccccgaggggacccgacaggcccgaaggaatagaa gaagaaggtggagagagagacagagacagatccattcgattagtgaacggatctcgacggtatcggttaacttttaaaagaaaag gggggattggggggtacagtgcaggggaaagaatagtagacataatagcaacagacatacaaactaaagaattacaaaaaca aattacaaaaattcaaaattttatcgatcacgagactagcctcgagagatctgatcataatcagccataccacatttgtagaggifttac ttgctttaaaaaacctcccacacctccccctgaacctgaaacataaaatgaatgcaattgttgttgttaacttgtttattgcagcttataatg gttacaaataaggcaatagcatcacaaatttcacaaataaggcattiftttcactgcattctagttttggthgtccaaactcatcaatgtat cttatcatgtctggatctcaaatccctcggaagctgcgcctgtcatcgaattcctgcagcccggtgcatgactaagctagcagtctaag gccaactcagaagagctttctcggttgtatcificacactccttaggaaagtcatgggattcgtacccccagtccctctgcttt ccacatttgagggctcttccgacttgtcgccatcagtgggcttcttcttcgaaggificataatgtaagtatctactattgcgag gtggaactttctcacagagaccagaccattcacacactcgttataagctttcgtcaagtcttcattgtgtcttgaaatgacaaa ctcacggactgggggagctgactctaagaagaaaaggaagttccggtgggctggaggcatgtactctctcatttcctggaggaattc tgcaggagattctttgccagcctcgtgttttattcccagaaggacatcaagactctggaagatgctgctctggcctgcactgccccctga aaacatttttggggtgtcccagaccccctcatacagcagaccttctggcagcttggagctgcatttccagccagacagatatatgcgg agaacgtggaaaaacgtgtctgggtccacaaagtcacgcatcctcttaaaaatttccttggctttctccagactggtagctatgtcgtgc agtgccttttccaatgctttcaggtcttgacgctctactgcactggatacagtggggattgctttgattgcaggagaagctgcgatttccac caatagagagacgaggaagaagcccttgtcgcagtccccaccaggaaatgagaacagaatgtccatgttctcgtatgtcatgggc ccattggggtcctifttcttccagtttgccaggacacagtctgcataagacagaataggaggcaggcccaacttctctgagagctcgc agtagggaacagcaatattgcggggcagcacctttcgaacatcgtcatcccctcggttccacacatacgccatggtgatgtacccca gggccaggtgtgccaggcgctgtaacctgtgtcctctcagtccgtccgtgctcagtgtgggcagcttttcaacttcttctcgaagctgcc cgttctcaatcagcacaggcagatttctagccacaaggacccaggggctgtatgcgtcgggcagctccaccagtggatgtggtaga gcaaagcccacatcttcatctatgtggtggtcttcaaggattcttctagaaccttctgtaggagatattttactgagtgccatagtcggtcc gctttgcggactgatggggctgcgctgcgctgcgctccagcgccccccctgcccgccggagctggccgcggcccgaattccgcgg aggctggatcggtcccggtgtcttctatggaggtcaaaacagcgtggatggcgtctccaggcgatctgacggttcactaaacgagct ctgcttatataggcctcccaccgtacacgcctaccctcgagaagcttgatatcgaattcccacggggttggggttgcgccttttccaag gcagccctgggtttgcgcagggacgcggctgctctgggcgtggttccgggaaacgcagcggcgccgaccctgggtctcgcacatt cttcacgtccgttcgcagcgtcacccggatcttcgccgctacccttgtgggccccccggcgacgcttcctgctccgcccctaagtcgg gaaggttccttgcggttcgcggcgtgccggacgtgacaaacggaagccgcacgtctcactagtaccctcgcagacggacagcgc cagggagcaatggcagcgcgccgaccgcgatgggctgtggccaatagcggctgctcagcggggcgcgccgagagcagcggc cgggaaggggcggtgcgggaggcggggtgtggggcggtagtgtgggccctgttcctgcccgcgcggtgttccgcattctgcaagc ctccggagcgcacgtcggcagtcggctccctcgttgaccgaatcaccgacctctctccccagggggatccaccatggatgaccaa cgcgacctcatctctaaccatgaacagttgcccatactgggcaaccgccctagagagccagaaaggtgcagccgtggagctctgt acaccggtgtctctgtcctggtggctctgctcttggctgggcaggccaccactgcttacttcctgtaccagcaacagggccgcctagac aagctgaccatcacctcccagaacctgcaactggagagccttcgcatgaagcttccgaaatctgccaaacctgtgagccagatgc ggatggctactcccttgctgatgcgtccaatgtccatggataacatgctccttgggcctgtgaagaacgttaccaagtacggcaacat gacccaggaccatgtgatgcatctgctcacgaggtctggacccctggagtacccgcagctgaaggggaccttcccagagaatctg aagcatcttaagaactccatggatggcgtgaactggaagatcttcgagagctggatgaagcagtggctcttgtttgagatgagcaag aactccctggaggagaagaagcccaccgaggctccacctaaagagccactggacatggaagacctatcttctggcctgggagtg accaggcaggaactgggtcaagtcaccctgtgtggcatctcctcagcagagagcctgaagatatctcaagctgtccatgcagcaca tgcagaaatcaatgaagcaggcagagaggtggtagggtcagcagaggctggagtggatgctgcaagctgataagtcgacaatc aacctctggattacaaaatttgtgaaagattgactggtattcttaactatgttgctccttttacgctatgtggatacgctgctttaatgcctttgt atcatgctattgcttcccgtatggctttcattttctcctccttgtataaatcctggttgctgtctctttatgaggagttgtggcccgttgtcaggca acgtggcgtggtgtgcactgtgtttgctgacgcaacccccactggttggggcattgccaccacctgtcagctcctttccgggactttcgc tttccccctccctattgccacggcggaactcatcgccgcctgccttgcccgctgctggacaggggctcggctgttgggcactgacaatt ccgtggtgttgtcggggaagctgacgtcctttccatggctgctcgcctgtgttgccacctggattctgcgcgggacgtccttctgctacgt cccttcggccctcaatccagcggaccttccttcccgcggcctgctgccggctctagagcctcttccgcgtcttcgccttcccgggtcgag ctcggtacctttaagaccaatgacttacaaggcagctgtagatcttagccactifttaaaagaaaaggggggactggaagggctaatt cactcccaacgaagacaagatctgctifttgcttgtactgggtctctctggttagaccagatctgagcctgggagctctctggctaacta gggaacccactgcttaagcctcaataaagcttgccttgagtgcttcaagtagtgtgtgcccgtctgttgtgtgactctggtaactagagat ccctcagacccttttagtcagtgtggaaaatctctagcagtagtagttcatgtcatcttattattcagtatttataacttgcaaagaaatgaa tatcagagagtgagaggaacttgtttattgcagcttataatggttacaaataaagcaatagcatcac hulL-10 (DNA) (SEQ ID NO: 159) atgcacagctcagcactgctctgttgcctggtcctcctgactggggtgagggccagcccaggccagggcacccagtctgagaaca gctgcacccacttcccaggcaacctgcctaacatgcttcgagatctccgagatgccttcagcagagtgaagactttctttcaaatgaa ggatcagctggacaacttgttgttaaaggagtccttgctggaggactttaagggttacctgggttgccaagccttgtctgagatgatcca gifttacctggaggaggtgatgccccaagctgagaaccaagacccagacatcaaggcgcatgtgaactccctgggggagaacct gaagaccctcaggctgaggctacggcgctgtcatcgatttcttccctgtgaaaacaagagcaaggccgtggagcaggtgaagaat gcctttaataagctccaagagaaaggcatctacaaagccatgagtgagtttgacatcttcatcaactacatagaagcctacatgaca atgaagatacgaaactga hulL-10 (protein) (SEQ ID NO: 160) MHSSALLCCLVLLTGVRASPGQGTQSENSCTHFPGNLPNMLRDLRDAFSRVKTFFQMKDQL DNLLLKESLLEDFKGYLGCQALSEMIQFYLEEVMPQAENQDPDIKAHVNSLGENLKTLRLRLR RCHRFLPCENKSKAVEQVKNAFNKLQEKGIYKAMSEFDIFINYIEAYMTMKIRN* hulDO (DNA) (SEQ ID NO: 161) atggcccatgccatggaaaacagctggaccatcagcaaagagtaccacatcgacgaggaagtgggcttcgccctgcctaatcctc aagagaacctgcctgacttctacaacgactggatgtttatcgccaaacatctgcccgacctgatcgagagcggccagctgagaga aagagtggaaaagctgaacatgctgagcatcgaccacctgaccgaccacaagtctcagagactggccagactggtgctgggctg tatcaccatggcctacgtgtggggaaaaggccatggcgacgtgcggaaagtgctgcccagaaatatcgccgtgccttactgccag ctgtccaagaagctggaactgcctcctatcctggtgtacgccgattgcgtgctggccaactggaagaagaaggaccccaacaagc ccctgacctacgagaacatggacgtgctgtttagcttccgcgacggcgattgcagcaagggattcttcctggtgtccctgctggtgga aatcgccgctgcctctgccatcaaagtgatccccaccgtgttcaaggccatgcagatgcaagagcgggacaccctgctgaaggcc ctgctggaaattgcctcctgcctggaaaaagccctccaggtgttccaccagatccacgaccacgtgaaccccaaggccttcttcagc gtgctgcggatctatctgtctggctggaagggcaatccccagctgtctgacggcctggtgtatgaaggcttctgggaagatcccaaag agttcgctggcggctctgccggacagtctagtgtgttccagtgcttcgatgtgctgctgggcatccagcaaacagccggcggaggac atgctgctcagtttctgcaagacatgcggcggtacatgcctccagctcaccggaactttctgtgcagcctggaaagcaaccccagcg tgcgggaattcgtgctgtctaaaggcgacgccggactgagagaagcctacgatgcctgtgtgaaggctctggtgtctctgcggagct accacctccagatcgtgaccaagtacattctgatccccgccagccagcagcctaaagagaacaagaccagcgaggacccctcc aagctggaagcaaaaggcacaggcggaaccgatctgatgaacttcctgaaaaccgtgcggtccaccaccgagaagtctctgctg aaagagggctga hulDO (protein) (SEQ ID NO: 162) MAHAMENSWTISKEYHIDEEVGFALPNPQENLPDFYNDWMFIAKHLPDLIESGQLRERVEKLN MLSIDHLTDHKSQRLARLVLGCITMAYVWGKGHGDVRKVLPRNIAVPYCQLSKKLELPPILVYA DCVLANWKKKDPNKPLTYENMDVLFSFRDGDCSKGFFLVSLLVEIAAASAIKVIPTVFKAMQM QERDTLLKALLEIASCLEKALQVFHQIHDHVNPKAFFSVLRIYLSGWKGNPQLSDGLVYEGFW EDPKEFAGGSAGQSSVFQCFDVLLGIQQTAGGGHAAQFLQDMRRYMPPAHRNFLCSLESNP SVREFVLSKGDAGLREAYDACVKALVSLRSYHLQIVTKYILIPASQQPKENKTSEDPSKLEAKG TGGTDLMNFLKTVRSTTEKSLLKEG* gagpol polyprotein Simian immunodeficiency virus (Vpx) (DNA) (SEQ ID NO: 163) atgggcgcgagaaactccgtcttgtcagggaagaaagcagatgaattagaaaaaattaggctacgacccggcggaaagaaaa agtacatgttgaagcatgtagtatgggcagcaaatgaattagatagatttggattagcagaaagcctgttggagaacaaagaagga tgtcaaaaaatactttcggtcttagctccattagtgccaacaggctcagaaaatttaaaaagcctttataatactgtctgcgtcatctggt gcattcacgcagaagagaaagtgaaacacactgaggaagcaaaacagatagtgcagagacacctagtggtggaaacaggaa cagcagaaactatgccaaaaacaagtagaccaacagcaccatctagcggcagaggaggaaattacccagtacaacaaatagg tggtaactatgtccacctgccattaagcccgagaacattaaatgcctgggtaaaattgatagaggaaaagaaatttggagcagaag tagtgccaggatttcaggcactgtcagaaggctgcaccccctatgacattaatcagatgttaaattgtgtgggagaccatcaagcggc tatgcagattatcagagatattataaatgaggaggctgcagattgggacttgcagcacccacaaccagctccacaacaaggacag cttagggagccgtcaggatcagatattgcaggaacaactagttcagtagatgaacaaatccagtggatgtacagacaacagaacc ccataccagtaggcaacatttacaggagatggatccaactggggttgcaaaaatgtgtcagaatgtataacccaacaaacattcta gatgtaaaacaagggccaaaagagccatttcagagctatgtagacaggttctacaaaagcttaagagcagaacaaacagatgc agcagtaaagaattggatgactcaaacactgctgattcaaaatgctaacccagattgcaagctagtgctgaaggggctgggtgtga atcccaccctagaagaaatgctgacggcttgtcaaggagtagggggaccaggacagaaggctagattaatggcagaagccctg aaagaggccctcgcaccagtgccaatcccttttgcagcagcccagaagaggggaccaagaaagccaattaagtgttggaattgtg ggaaggagggacactctgcaaggcaatgcagagccccaagaagacagggatgctggaaatgtggaaaaatggaccatgttat ggccaaatgcccagacagacaggcgggttttttaggccttggtccatggggaaagaagccccgcaatttccccatggctcaagtgc atcaggggctgacgccaactgctcccccagaggacccagctgtggatctgctaaagaactacatgcagttgggcaagcagcaga gagaaagcagagagaagccttacaaggaggtgacagaggatttgctgcacctcaattctctctttggaggagaccagtagtcactg ctcatattgaaggacagcctgtagaagtattattggatacaggggctgatgattctattgtaacaggaatagagttaggtccacattata ccccaaaaatagtaggaggaataggaggifttattaatactaaagaatacaaaaatgtaaaaatagaagttttaggcaaaaggatt aaagggacaatcatgacaggggacactccgattaacatttttggtaggaatttgctaacagctctggggatgtctctaaatcttcccat agctaaggtagagcctgtaaaagtcaccttaaagccaggaaaggttggaccaaaattgaagcagtggccattatcaaaagaaaa gatagttgcattaagagaaatctgtgaaaagatggaaaaggatggtcagttggaggaagctcccccgaccaatccatacaacacc cccacatttgccataaagaaaaaagataagaacaaatggagaatgctgatagattttagggaactaaatagggtcactcaggactt tacagaagtccaattaggaataccacaccctgcaggactagcaaaaaggaaaaggattacagtactggatataggtgatgcatatt tctccatacctctagatgaagaatttaggcagtacactgcctttactttaccatcagtaaataatgcagagccaggaaaacgatacattt ataaggttctgcctcagggatggaaggggtcaccagccatcttccaatacactatgagacatgtgctagaacccttcaggaaggca aatccagatgtgaccttagtccagtatatggatgacatcttaatagctagtgacaggacagacctggaacatgacagggtagttttac agctaaaggaactcttaaatagcatagggttctctaccccagaagagaaattccaaaaagatcccccatttcaatggatggggtac gaattgtggccgacaaaatggaagttgcaaaagatagagttgccacaaagagagacctggacagtgaatgatatacagaagtta gtaggagtattaaattgggcagctcaaatttatccaggtataaaaaccaaacatctctgtaggttaattagaggaaaaatgactctaa cagaggaagttcagtggactgagatggcagaagcagaatatgaggaaaataagataattctcagtcaggaacaagaaggatgtt attaccaagaaggcaagccattagaagccacggtaataaagagtcaggacaatcagtggtcttataaaattcaccaagaagaca aaatactgaaagtaggaaaatttgcaaagataaagaatacacataccaatggagttagactattagcacatgtaatacagaaaat aggaaaggaagcaatagtgatctggggacaggtcccaaaattccacttaccagttgagagggatgtatgggaacagtggtggac agactattggcaggtaacctggataccggagtgggattttatctcaacgccaccactagtaagattagtcttcaatctagtgaaggac cctatagagggagaagaaacctattatacagatggatcatgtaataaacagtcaaaagaagggaaagcaggatatatcacagat aggggcaaagacaaagtaaaagtgttagaacagactactaatcaacaagcagaattagaagcatttctcatggcattgacagact cagggccaaagacaaatattatagtagattcacaatatgttatgggaataataacaggatgccctacagaatcagagagcaggct agttaaccaaataatagaagaaatgattaaaaagtcagaaatttatgtagcatgggtaccagcacacaaaggtataggaggaaa ccaagaaatagaccacctagttagtcaggggattagacaagttctcttcttggaaaagatagagccagcacaagaagaacatgat aaataccatagtaatgtaaaagaattggtattcaaatttggattacccagaatagtggccagacagatagtagacacctgtgataaat gtcatcagaaaggagaagctatacatgggcaggtaaattcagatctagggacttggcaaatggactgtacccatctagaaggaaa aatagtcatagttgcagtacatgtagctagtggattcatagaagcagaagtaattccacaagagacaggaagacagacagcacta tttctgttaaaattggcaggcagatggcctattacacatctacacacagataatggtgctaactttgcctcgcaagaagtaaagatggtt gcatggtgggcagggatagagcacacctttggggtaccatacaatccacagagtcagggagtagtggaagcaatgaatcaccac ctgaaaaatcaaatagatagaatcagggaacaagcaaattcagtagaaaccatagtattaatggcagttcattgcatgaattttaaa agaaggggaggaataggggatatgactccagcagaaagattaattaacatgatcactacagaacaagaaatacaatttcaacaa tcaaaaaactcaaaatttaaaaattttcgggtctattacagagaaggcagagatcaactgtggaagggacccggtgagctattgtgg aaaggggaaggagcagtcatcttaaaggtagggacagacattaaggtagtacccagaagaaaggctaaaattatcaaagattat ggaggaggaaaagaggtggatagcagttcccacatggaggataccggagaggctagagaggtggcatag gagpol polyprotein Simian immunodeficiency virus (Vpx) (Protein) (SEQ ID NO: 164) MGARNSVLSGKKADELEKIRLRPGGKKKYMLKHVVWAANELDRFGLAESLLENKEGCQKILS VLAPLVPTGSENLKSLYNTVCVIWCIHAEEKVKHTEEAKQIVQRHLVVETGTAETMPKTSRPTA PSSGRGGNYPVQQIGGNYVHLPLSPRTLNAVVVKLIEEKKFGAEVVPGFQALSEGCTPYDINQ MLNCVGDHQAAMQIIRDIINEEAADWDLQHPQPAPQQGQLREPSGSDIAGTTSSVDEQIQWM YRQQNPIPVGNIYRRWIQLGLQKCVRMYNPTNILDVKQGPKEPFQSYVDRFYKSLRAEQTDA AVKNWMTQTLLIQNANPDCKLVLKGLGVNPTLEEMLTACQGVGGPGQKARLMAEALKEALAP VPIPFAAAQKRGPRKPIKCWNCGKEGHSARQCRAPRRQGCWKCGKMDHVMAKCPDRQAG FLGLGPWGKKPRNFPMAQVHQGLTPTAPPEDPAVDLLKNYMQLGKQQRESREKPYKEVTED LLHLNSLFGGDQ
Examples
[0331] Alternative strategies have been developed to generate tolerogenic DC (toILV-DC) based on LV-mediated gene transfer of specific Ag-derived peptide(s) coupled with target sequences for miR155 and miR146a, known regulators of DC maturation (DC-Ag.miRNA), with IL-10 (DC-IL-10/Ag), or IDO (DC-IDO/Ag) (
[0332] To study the mechanism of action of LV-DC, the inventors developed chimeric mice by transplanting CD45.1 (95%) and CD45.2 OTII/FirTiger (5%) bone marrow (BM) cells into lethally irradiated CD45.1 mice. OTII/FirTiger CD4.sup.+ T cells are TCR transgenic cells recognizing OVA.sub.323-339 and expressing RFP and GFP as reporter genes for foxp3 and Il10, respectively. At full reconstitution, chimeric mice with ˜5% of OTII/FirTiger CD4.sup.+ T cells in circulation (
[0333] With the aim at modulating both CD4+ and CD8+ T cell responses, the inventors generated LV encoding for OVA.sub.242-353, which contains OVA.sub.323-339 recognized by TCR transgenic OTII CD4.sup.+ T cells and OVA.sub.257-264 (SIINFEKL) by TCR transgenic OTI CD8.sup.+ T cells. BM cells were transduced with either LV.IiOVA.sub.315-353 or LV.IiOVA.sub.242-353, and engineered DC-OVA.sub.315-353 and DC-OVA.sub.242-353 were used to stimulate OTII and OTI cells. Both DC-OVA promoted the proliferation of OTII CD4+ T cells, whereas DC-OVA.sub.242-353, but not DC-OVA.sub.315-353, promoted the proliferation of OTI cells (
[0334] These results show that LV-mediated gene transfer of Ag fused to invariant chain endorses DC with the ability to present and promote Ag-specific CD4.sup.+ and CD8.sup.+ T cell proliferation in vitro and in vivo. Moreover, addition of tolerogenic elements (miRNA target sequences, IL-10 or IDO) in the LV backbone, ensuring encoded Ag presentation by immature-like DC or by DC in the presence of high levels of IL-10 and IDO, favors the generation of regulatory DC that promote Ag-specific T cell hypo-responsiveness, and, in the case of DC-OVA.miRNA or DC-IL-10/OVA expansion of Ag-specific Tr1 cells.
[0335] To study efficacy of LV-DC to modulate diabetogenic T cell responses in vitro and in vivo, LV encoding for Ii fused with InsB.sub.4-29, containing the diabetogenic peptide InsB.sub.9-23 alone or in combination with miRNA155 and 146a target sequences, IL-10, or IDO were generated and used to transduce BM cells isolate from NOD mice during DC differentiation. LV.IiInsB.sub.4-29.miR155T.miR146aT, LV.IL-10.IiInsB.sub.4-29, LV.IDO.IiInsB.sub.4-29, and as control LV.IiInsB.sub.9-23 and LV.IiOVA.sub.315-353 were used to obtain DC-InsB.miRNA, DC-IL-10/InsB, DC-IDO/InsB, DC-InsB and DC-OVA. LV-DCs were CD11c.sup.+ and expressed the MHC class II I-Ag.sup.g7 and CD86 at similar levels to those expressed by un-transduced DCs (not shown). CD4.sup.+ T cells isolated from a diabetic NOD mouse proliferated when stimulated with DC-InsB, but not with DC-OVA (
[0336] The inventors next investigated the biodistribution and survival of LV-DC in vivo. Thus, BM cells isolated from Balb/c mice were transduced with LV-encoding for luciferase on day 2 during DC differentiation. LV-DC.sup.luc were intraveneously (i.v.) or intraperitoneally (i.p.) injected in Balb/c recipient mice and biodistribution and LV-DC.sup.luc survival was monitored by bioluminescence imaging (BLI). As expected, upon i.v. or i.p. injection LV-DC.sup.luc localized in lung and peritoneum, respectively. I.v. injected LV-DC.sup.luc localized in the spleen Starting from day 6, whereas i.p. injected LV-DC.sup.luc localized in the spleen starting from day 2. Injected cells progressively disappeared by day 8-10 (
[0337] Treated mice were sacrificed 15 weeks post the last DC injection and the frequency of Treg in the spleen and pancreatic lymph nodes was analyzed. Overall, no specific induction of CD49b.sup.+ LAG-3.sup.+ Tr1 cells or CD25.sup.+Foxp3.sup.+ Tregs (
[0338] In conclusion, the inventors developed an efficient and powerful method to generate stable and effective tolerogenic DC by cutting-edge technology based on LV encoding for specific autoAg and tolerogenic molecules.
[0339] To translate the LV based approach to human cells the inventors first developed an efficient protocol for promoting bdLV-mediated transduction of human DC. To this end, CD14.sup.+ cells were pre-treated or not with viral-like particles containing the simian immunodeficiency virus (SIV)-derived accessory protein Vpx-VPL to counteract SAMHD1-mediated restriction on day 0, 2, or 5 during DC differentiation (
[0340] Using the established protocol to generate engineered human LV-DC, the inventors first investigated the ability of LV co-encoding for IL-10 and ΔNGFR a marker for selection previously used to generate Tr1-like (CD4.sup.IL-10) cells ((40, 85) WO2016146542) to generate DC.sup.IL-10. CD14.sup.+ cells were treated with Vpx-VPL for 6-8 hours and then transduced with LV-IL-10/ΔNGFR (DC.sup.IL-10) or LV-GFP/ΔNGFR (DC.sup.GFP) at day 0 during DC differentiation. As control the inventors used DC untransduced (DC.sup.UT) and DC-10 differentiated from the same donors by culturing CD14.sup.+ cells with GM-CSF and IL-4 or GM-CSF, IL-4, and IL-10, respectively. Human DC were efficiently transduced by both vectors, reaching up to 98% of transduction, as demonstrated ΔNGFR expression (
[0341] Overall these findings indicate that LV-mediated IL-10 gene transfer convert human DC in DC-10-like cells endowed with the ability to modulate allogeneic T cells and promote the differentiation of anergic allo-specific Tr1 cells.
[0342] To study the ability of DC.sup.IL-10 to prevent graft-versus host disease (GvHD) the inventors generated murine DC.sup.IL-10 by transducing BM cells isolated from Balb/c mice with LV-IL-10/ΔNGFR during DC differentiation. As control, BM cells transduced with LV-GFP/ΔNGFR (DC.sup.GFP) were generated. Murine DC.sup.IL-10 and DC.sup.GFP were then adoptively transferred into Balb/c mice lethelly irradiated and injected with allogeneic (C57Bl/6) BM cells and splenocytes. Untreated mice or mice treated with DC.sup.GFP developed lethal GvHD, whereas single injection of DC.sup.IL-10 significantly delayed GvHD (
[0343] To generate Ag-specific human LV-DC, the inventors designed LV constructs encoding for human CLIP sequence of Iip33 (invariant chain p33 binding domain for MHC class II molecules) fused with autoAg-derived peptides. The inventors generated LV encoding for Iip33 fused with Insulin B4-29 sequence (LV.InsB.sub.4-29), or with α2-gliadin 51-80 (LV.Glia.sub.51-80). DC differentiating monocytes were transduced with LV using an optimized protocol which foresees the pre-treatment of CD14.sup.+ precursors with Vpx-VPL in serum free medium (
[0344] Similar to DC.sup.IL-10, DC-IL-10/Ag express high levels of DC-10-associated markers including CD14, CD141, CD163, and ILT4, whereas do not acquire the expression of HLA-G (
[0345] Functional characterization of DC-IL-10/Ag demonstrated that in contrast to DC-Ag that consistently induced Ag-specific proliferative responses in HLA-restricted T cells, concomitant over-expression of IL-10 down-regulated the proliferation of Ag-specific T cells (
[0346] Overall these data demonstrated that engineered DC with LVs encoding for invariant chain (Ii) fused to a specific Ag coupled with multiple target sequences for miR155 and miR146a, known regulators of DC maturation (DC-Ag.miRNA) or with IL-10 (DC-IL-10/Ag); or IDO (DC-IDO/Ag) generated a population of tolerogenic DC able to modulate Ag-specific T cell responses and to promote the differentiation of Ag-specific Tr1 cells or FOXP3.sup.+ T cells in vitro and in vivo. According to the above evidence, a strong inhibition of T effector cells and/or a strong activation of T regulatory cells may be obtained using the exemplified approaches.
[0347] Being DC.sup.IL-10 similar to DC-10, we investigated their ability to promote allo-specific Tr1 cells in vitro by stimulating allogeneic CD4.sup.+ T cells for 10 days. In all donors tested, CD4.sup.+ T cells primed with DC.sup.IL-10, [T(DC.sup.IL-10) cells], contained a higher proportion of Tr1 cells compared to T cells primed with DC.sup.UT and DC.sup.GFP [T(DC.sup.UT) and T(DC.sup.GFP) cells, respectively] (
[0348] To assess the modulatory activity of DC.sup.IL-10 in vivo the inventors took advantage of the recently developed protocol for the repopulation of NSG mice with human cord blood CD34.sup.+ cells. Intra-liver injection of human CD34.sup.+ cells in sub-lethally irradiated neonate NSG mice allowed efficient engraftment of human CD45.sup.+ T cells in bone marrow (BM) and differentiation of lymphoid (B, T effector and T regulatory) and myeloid mature cells in the periphery (91). Reconstituted huNSG mice were immunized by i.v. injection of irradiated allogeneic human APC and boosted 7 days after with autologous DC.sup.UT alone or with DC.sup.IL-10 (DC.sup.UT+DC.sup.IL10) or DC.sup.GFP (DC.sup.UT+DC.sup.GFP) (
[0349] One of the key aspects of DC-based cell products is their stability (i.e. the expression of specific markers, secretion of cytokines, stimulatory activity and induction of Tr1 cells are maintained after activation), the inventors therefore assessed the phenotype of DC.sup.IL-10 after in vitro stimulation with different TLR agonists (i.e. LPS, Listeria, Flagellin, Poli I:C, and CpG) or with a mixed of pro-inflammatory cytokines (IL-1b, TNF-a and IL-6). Similar to previous data obtained in DC-10 (92), CD163 and CD141 were firmly expressed on DC.sup.IL-10 upon activation (
[0350] The interaction between CD47 on LV particles with its ligand Sirp-α on target cells impaired transduction efficiency by the reduction of LV particles uptake via phagocytosis. Thus, the inventors verified if the expression of CD47 on LV particles modified the efficiency of transduction of human DC. To this end, they performed transduction of DC precursors with LV particles harboring different levels of human-CD47 (huCD47) on the surface (huCD47-High LV>LV>HuCD47-free LV). Interestingly, LV-mediated transduction of Sirp-a expressing DC precursors was significantly increased using huCD47-free LV particles (
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