摘要:
Disclosed are bispecific binding agents that specifically target both of the IGF-1 and the ErbB intracellular signaling pathways. For example, bispecific binding agents that comprise an anti-IGF-1R antibody and an anti-ErbB3 antibody connected by a linker are described herein. These bispecific agents are capable of antagonizing signal transduction by both of the IGF-1 and the ErbB signaling pathways and are useful in inhibiting the proliferation of tumor cells whose growth involves the signaling activity of both pathways.
摘要:
Provided herein are novel monospecific and bispecific antibodies that are useful as anti-neoplastic agents and that bind specifically to human IGF-1R and human ErbB3. Exemplary antibodies inhibit signal transduction through either or both of IGF-1R and ErbB3. Exemplary polyvalent proteins comprise at least one anti-IGF-1R binding site and at least one anti-ErbB3 binding site. In certain embodiments the binding sites may be linked through an immunoglobulin constant region. Novel antiErbB3 and anti-IGF-1R antibodies (e.g., monoclonal antibodies) are also provided.
摘要:
The compositions and methods of the present invention are based, in part, on our discovery that an effector function mediated by an Fc-containing polypeptide can be altered by modifying one or more amino acid residues within the polypeptide (by, for example, electrostatic optimization). The polypeptides that can be generated according to the methods of the invention are highly variable, and they can include antibodies and fusion proteins that contain an Fc region or a biologically active portion thereof.
摘要:
The present invention features inter alia polypeptides comprising an Fc region comprising genetically-fused Fc moieties. In addition, the instant invention provides, e.g., methods for treating or preventing a disease or disorder in subject by administering the binding polypeptides of the invention to said subject.