ENHANCING ANTI-CANCER ACTIVITY OF IMMUNOMODULATORY FC FUSION PROTEINS

摘要

The present disclosure provides a method for enhancing the anti-tumor efficacy of an Fc fusion protein which binds specifically to a target, e.g., a co-inhibitory or co-stimulatory receptor of ligand, on a T cell in a subject afflicted with a cancer or a disease caused by an infectious agent and alters the activity of the immunomodulatory target, thereby potentiating an endogenous immune response against cells of the cancer or the infectious agent, wherein the method comprises selecting, designing or modifying the Fc region of the Fc fusion protein so as to enhance the binding of said Fc region to an activating Fc receptor (FcR). The disclosure also provides an Fc fusion protein produced by said method which has an enhanced ability to potentiate an endogenous immune response against cells of a cancer or an infectious agent in a subject. The disclosure further provides a method for treating a subject which comprises administering to the subject a therapeutically effective amount of an Fc fusion protein, wherein the Fc region of the Fc fusion protein has been selected, designed or modified so as to increase the binding of said Fc region to an activating FcR.