Anti-fc-gamma riib receptor antibody and uses therefor

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/28 (2006.01) A61K 39/395 (2006.01) A61P 37/06 (2006.01) A61P 37/08 (2006.01) C07K 16/46 (2006.01)

Patent

CA 2577405

The present application describes antibodies that selectively bind human FcgammaRIIB, with little or no binding to other human FcgammaRs, e.g., human FcgammaRIIA. The invention also provides isolated bispecific antibodies comprising an antibody that selectively binds FcgammaRIIB, and a second antibody that specifically binds an activating receptor. Various uses, including therapeutic uses, for those antibodies are also described, including administration with anti-tumor antibodies and methods of inhibiting immune responses and suppressing histamine release.

La présente invention concerne des anticorps qui se lient sélectivement au récepteur FcgammaRIIB humain, et qui se lient peu ou pas du tout aux autres récepteurs FcgammaRs humains, par exemple, le FcgammaRIIA humain. Cette invention concerne également des anticorps bispécifiques isolés comprenant un anticorps qui se lie sélectivement au récepteur FcgammaRIIB, et un second anticorps qui se lie spécifiquement à un récepteur activateur. L'invention concerne également différentes utilisations, parmi lesquelles des utilisations de ces anticorps à des fins thérapeutiques; y compris l'administration conjointe avec des anticorps anti-tumoraux. Cette invention concerne également des méthodes permettant d'inhiber les réponses immunitaires et de supprimer la libération de l'histamine.

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