US Patent 12077590 Bispecific antibody for cancer immunotherapy

Disclosed are compositions and methods for gene transfer in immune effector cells, e.g. to create chimeric antigen receptors (CARs). In particular, polypeptides are disclosed that comprising an antigen-binding region and a heparin binding domain, wherein the antigen-binding region is capable of specifically binding to an immune cell antigen located on an immune effector cell, and wherein the heparin binding domain is capable of binding a viral vector.