Biotin orthogonal streptavidin system

Abstract

The present disclosure relates to an orthogonal system comprising a first bi-specific polypeptide that comprises D-streptavidin or a variant thereof covalently linked to an antibody or antibody fragment and a second bi-specific polypeptide that comprises L-biotin covalently linked to a therapeutic or diagnostic agent. The disclosed systems can be useful in, for example, treating a disease or a condition (e.g., cancer, non-Hodgkin lymphoma, multiple sclerosis, Crohn's disease, rheumatoid arthritis, asthma, macular degeneration, psoriasis, Hodgkin lymphoma, paroxysmal nocturnal hemoglobinuria, X-linked hypophosphatemia). Also described are peptides and polypeptides useful in preparing the disclosed bi-specific polypeptides and methods of making same. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Dependencies are inferred from the claim text.