A PDL1 block CAR-T transgenic vector for suppressing immune escape includes: AmpR sequence containing ampicillin resistance gene (SEQ ID NO: 1); prokaryotic replicon pUC Ori sequence (SEQ ID NO: 2); virus replicon SV40 Ori sequence (SEQ ID NO: 3); eWPRE enhanced posttranscriptional regulatory element of hepatitis B virus (SEQ ID NO: 11); human EF1a promoter (SEQ ID NO: 12); lentiviral packaging cis-elements for lentiviral packaging; humanized single-chain antibody fragment PDL1scFv1 (SEQ ID NO: 21), PDL1scFv2 (SEQ ID NO: 22), or PDL1scFv3 (SEQ ID NO: 23) of human PDL1; IRES ribosome binding sequence (SEQ ID NO: 25); IL6 signal peptide (SEQ ID NO: 26); human antibody Fc segment (SEQ ID NO: 27); and chimeric antigen receptors of the second or third generation CAR for integrating recognition, transmission and initiation. A preparation method of the PDL1 block CAR-T transgenic vector and an application thereof in a preparation of anti-immune escape drugs.

Fungal artificial chromosome (FAC) vectors are disclosed. A vector can be replicated in a bacterial or a fungal host, and can comprise an insert of heterologous DNA up to about 500 kilobases. A vector can be used for cloning and expressing a secondary metabolite (SM) gene cluster. An insert sequence can be modified by homologous recombination. A vector can be a plasmid comprising bacterial and fungal origins of replication, as well as bacterial and fungal selection marker genes. Also disclosed are vectors that can be integrated into a fungal genome, and dual function vectors which can be replicated in a bacterial or a fungal host and can also be integrated into a fungal genome. Also disclosed are methods of generating plasmid libraries including vectors comprising intact SM gene clusters.

Fungal artificial chromosome (FAC) vectors are disclosed. A vector can be replicated in a bacterial or a fungal host, and can comprise an insert of heterologous DNA up to about 500 kilobases. A vector can be used for cloning and expressing a secondary metabolite (SM) gene cluster. An insert sequence can be modified by homologous recombination. A vector can be a plasmid comprising bacterial and fungal origins of replication, as well as bacterial and fungal selection marker genes. Also disclosed are vectors that can be integrated into a fungal genome, and dual function vectors which can be replicated in a bacterial or a fungal host and can also be integrated into a fungal genome. Also disclosed are methods of generating plasmid libraries including vectors comprising intact SM gene clusters.

Provided is the recombinant vector (pRBASFer-ori) for mass production of ferritin protein and a mass production method of ferritin protein using the same, more specifically, a recombinant vector (pRBASFer-ori) for mass production of ferritin protein, which is a Periserrula leucophryna-derived iron protein; a Bacillus subtilis transformant to which the recombinant vector (pRBASFer-ori) is introduced; and a mass production method using the same. The recombinant vector for mass production of ferritin protein and the mass production method of ferritin protein using the same according to the present invention, has an effect of more efficiently secretion by expressing a ferritin gene obtained from Periserrula leucophryna, and the ferritin-containing culture broth has an excellent biological activity, especially an outstanding biological activities in laying hens, broilers, and weaning pigs, respectively.

Methods and compositions for treating a seizure disorder are provided which include administering to the patient a vector encoding a modified receptor for delivery of the modified receptor to the target location, the modified receptor being modified to be activated by a synthetic ligand, wherein the modified receptor inhibits neuronal firing when activated; and administering to the patient the synthetic ligand. Also provided are methods and compositions for treating a seizure disorder in a patient in need thereof by administering to the patient a vector encoding a modified receptor for delivery of the modified receptor to the target location, the modified receptor being modified to be activated by a synthetic ligand, wherein the modified receptor increases neuronal firing when activated; and administering to the patient the synthetic ligand. The methods are used to improve or alleviate one or more symptoms of a seizure disorder.

The invention provides hybrid and recombinant phagemid vectors for expressing a transgene in a target cell transduced with the vector. A recombinant phagemid particle comprises at least one transgene expression cassette which encodes an agent which exerts a biological effect on the target cell, characterised in that the phagemid particle comprises a genome which lacks at least 50% of its bacteriophage genome. The invention extends to the use of such phagemid expression systems as a research tool, and for the delivery of transgenes in a variety of gene therapy applications, DNA and/or peptide vaccine delivery and imaging techniques. The invention extends to in vitro, in vivo or in situ methods for producing viral vectors, such as recombinant adeno-associated viruses (rAAV) or lentivirus vectors (rLV), and to genetic constructs used in such methods.

The present invention relates to self-replicating DNA expression vectors comprising elements from Beak and Feather Disease Virus (BFDV), including a BFDV LIR element comprising an origin of replication (Ori), genes encoding a BFDV Rep protein and a heterologous polypeptide of interest under the control of a mammalian promoter, wherein the Rep protein is capable of binding to the Ori to initiate replication of the expression vector. Pharmaceutical compositions and cells comprising the self-replicating vectors are also provided. The self-replicating vectors may be used in methods of inducing an immune response or expressing a polypeptide in a subject, or as an expression system.

Provided herein are constructs for producing recombinant adeno-associated virus (rAAV) vectors comprising rAAV genomes that can recombine to produce oligomerized rAAV genomes that persist longer in a cell than traditional rAAV genomes, and that comprise relatively large transgenes. The constructs comprise either a 5 recombinant junction sequence, a 3 recombinant junction sequence, or both, such that a recombination event will link the rAAV genomes together. Also provided are modified rAAV vectors comprising these constructs, methods for producing the vectors, and methods of using the vectors to deliver transgenes to a subject.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

Fungal artificial chromosome (FAC) vectors are disclosed. A vector can be replicated in a bacterial or a fungal host, and can comprise an insert of heterologous DNA up to about 500 kilobases. A vector can be used for cloning and expressing a secondary metabolite (SM) gene cluster. An insert sequence can be modified by homologous recombination. A vector can be a plasmid comprising bacterial and fungal origins of replication, as well as bacterial and fungal selection marker genes. Also disclosed are vectors that can be integrated into a fungal genome, and dual function vectors which can be replicated in a bacterial or a fungal host and can also be integrated into a fungal genome. Also disclosed are methods of generating plasmid libraries including vectors comprising intact SM gene clusters.