7 results about "Complement-dependent cytotoxicity" patented technology

Disclosed is a polypeptide dimeric protein containing two monomers, each of which contains an extracellular domain (FcεRIa-ECD) of an alpha subunit of an IgE Fc receptor. The dimeric protein has advantages that an excellent binding ability to IgE is exhibited as compared with a conventional therapeutic agent containing an anti-IgE antibody, and less other side effects are exhibited due to lack of ADCC and CDC functions. Thus, the dimeric protein can be applied to a medical product for treating or preventing an IgE-mediated allergic disease.

The present disclosure provides multiple anti-hCD20 mAbs as well as humanization of antibodies. The antibodies described herein are chicken-derived and exhibit significantly enhanced B-cell-specific antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) potency as well as improved depletion of B lymphoma cells in vivo relative to Rituximab.

This article describes antibodies or antigen-binding fragments that specifically bind to GPRC5D. Additionally, it includes monovalent antibodies or antigen-binding fragments that specifically bind to GPRC5D. The Fc regions of these antibodies contain K248E and T437R mutations (referred to as “RE mutations”) according to the EU numbering system. The described antibodies, when expressed in host cells lacking fucosylation capacity, exhibit enhanced antibody-dependent cytotoxicity (ADCC) and enhanced complement-dependent cytotoxicity (CDC).

Herein are antibodies or antigen-binding fragments specifically binding to GPRC5D. Additionally, monovalent antibodies or antigen-binding fragments specifically binding to GPRC5D are also included. The Fc region of these antibodies contains K248E and T437R mutations (designated as “RE mutations”) per the EU numbering system. The described antibodies, expressed in host cells that lack fucosylation capabilities, exhibit enhanced antibody-dependent cellular cytotoxicity (ADCC) and enhanced complement-dependent cytotoxicity (CDC).

Described herein are polypeptides comprising variant Fc domains and related antibodies. The variant Fc domains provide stable Fc:Fc interactions when the polypeptides, one or more antibodies, bind to their target(s), one or more antigens, on the surface of a cell, thus providing improved complement-dependent cytotoxicity (CDC).

Herein are methods of treating multiple myeloma in a subject comprising administering GPRC5D antibodies with enhanced antibody-dependent cellular cytotoxicity (ADCC) and enhanced complement-dependent cytotoxicity (CDC). The antibodies described in the methods are afucosylated and comprise K248E and T437R mutations (designated as "RE mutations") per the EU numbering system.

A monoclonal antibody of IgM isotype which specifically binds to the antigen glypican-1 (GPC1) in vitro, ex vivo and in vivo, is able to induce complement dependent cytotoxicity and reduce GPC1-expressing tumor masses in vivo. A nucleic acid construct and a transformed host cell are suitable for use in a method of recombinantly producing the anti-GPC1 monoclonal antibody and in diagnostic and therapeutic methods.