A novel nucleic acid delivery system is provided containing a linear histidine-lysine rich cysteine-containing peptide bearing a targeting function, and a four branched histidine-lysine rich polypeptide. The delivery system includes a nucleic acid, such as an siRNA. The components form a nanoparticle complex through multiple non-covalent interactions between the phosphates of siRNA and histidine/lysine of the polypeptide, with reduced toxicity. The stable complex selectively delivers the genetic material to cells. The targeting function enhances the efficiency of the nucleic acid delivery and transfection.

Carrier molecules also are provided that have the ability to deliver a therapeutic molecule to a specific cell within a tissue in the body. The carrier molecule is modified with a targeting ligand capable of binding to specific receptors present or upregulated on the cell to be targeted. The therapeutic molecule is an siRNA, miRNA, or other oligonucleotide. The targeting moiety is a small molecule, peptide, or protein that shows an affinity for a receptor present on the cell to be targeted.

In some aspects, the present invention cell-penetrating compstatin analog and compositions comprising cell-penetrating compstatin analog. In some aspects, the invention further provides methods of using cell-penetrating compstatin analogs treat a complement-mediated disorder. e.g., to inhibit complement-mediated damage to a cell, tissue, or organ, to inhibit production or release of biologically active C3 cleavage products.

The present disclosure relates to genetically modified non-human animals that express a human or chimeric (e.g., humanized) major histocompatibility complex (MHC) protein complex, and methods of use thereof.

Compositions and methods for small molecule control of precise base editing are disclosed.

Glycotargeting therapeutics are useful in the treatment of transplant rejection, autoimmune disease, food allergy, and immune response against a therapeutic agent.

Provided herein are chimeric scavenger receptor where the endogenous binding region is replaced with an antigen-specific binding region to redirect the specificity of the receptor. Also provided are immune cells, such as, for example, monocytes, that are engineered to express the chimeric scavenger receptor. Also provided are methods of treating patients, such as, for example, Alzheimer's patients, by administering the engineered monocytes.

Provided are non-natural or variant β-ketoacyl-acyl carrier protein (ACP) synthase (KAS) IVa enzymes (KASIVa), polynucleotides encoding such variant KASIVa, host cells expressing such variant KASIVa, oils and oil products produced by such cells, and methods of making and using such variant KASIVa.

The present invention relates to cancer therapy, in particular cancer immunotherapy. In particular, the present invention relates to methods and products for treating cancer by administration of specific fusion polypeptides or nucleic acids encoding such fusion polypeptides.

The present application relates to compositions for preventing or treating viral and other microbial infections. In some embodiments, the present application provides chimeric proteins comprising a target-binding moiety that specifically binds to a pathogen that infects through a mucosa, and a positively charged mucoadhesive peptide fragment. Also provided are antibodies and constructs thereof that specifically binds to an S1 subunit of a spike protein of SARS-CoV-2. Compositions comprising the chimeric proteins, antibodies, or constructs described herein are useful for preventing or treating a microbial infection in an individual, such as a coronavirus infection.

The present invention concerns a recombinant microalgae comprising a nucleic acid sequence encoding a recombinant peptide of KTTKS (SEQ ID No 1); a recombinant peptide, polypeptide or protein consisting in repeated units of SEQ ID No 1; or a derivative thereof, said nucleic acid sequence being located in the chloroplast genome of microalgae. It also relates to a method for producing a recombinant peptide of SEQ ID No 1; a recombinant peptide, polypeptide or protein consisting in repeated units of SEQ ID No 1; or a derivative thereof, wherein said method comprises the chloroplast genome transformation of a microalgae with a nucleic acid sequence encoding said recombinant protein, polypeptide or peptide. It further relates to the use of said recombinant peptide, polypeptide or protein for the cosmetic industry.