MULTIMERIC PROTEIN DOMAINS FOR MULTIFUNCTIONALITY AND ENHANCED SECRETION OF THERAPEUTIC PROTEINS

    公开(公告)号:US20220324943A1

    公开(公告)日:2022-10-13

    申请号:US17629356

    申请日:2020-07-22

    摘要: Provided herein are compositions and methods for the stable production of bioactive small peptides of interest through delivery to target cells based on the fusion of small peptides of interest to a collagen domain of a C1qTNF protein to produce a novel scaffold protein capable of multimerization. Advantageously, the fusion proteins, compositions and methods of the present disclosure meet existing needs in the art by providing for higher stable expression and longer stability of intracellular and secretable peptides of interest. Additionally, the fusion proteins, compositions and methods of the present disclosure provide for improved binding affinity of expressed receptor peptides with ligand binding partners in the target cell. Further provided herein are polynucleotide constructs encoding the described fusion proteins and recombinant adeno-associated viral particles comprising these polynucleotides. Also provided herein are pharmaceutical compositions and nanoparticles that comprise the described fusion proteins. Further provided herein are methods of treating a subject by administering the described fusion proteins, rAAV particles, compositions and/or nanoparticles.