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Immunoglobulin G Receptor Fc Region (IgG Fc Receptor)
- Target
- IgG Fc Receptor
- Molecular classification
- Receptor, Cell surface receptor, Immunoglobulin receptor
01
Overview
The Immunoglobulin G (IgG) receptor Fc region refers to the part of IgG antibodies that interacts with specific cell surface receptors known as Fc gamma receptors (FcγRs). These interactions are central to the immune system’s ability to recognize and respond to pathogens, mediate inflammation, and regulate antibody-dependent cellular functions. Engagement between the IgG-Fc region and its cognate receptor triggers multiple downstream effects, including phagocytosis, antibody-dependent cell-mediated cytotoxicity (ADCC), immune complex clearance, and regulation of immune responses. Alterations or genetic variations in these receptors can influence susceptibility to autoimmune diseases. Manipulating these interactions through engineered antibodies or small molecule mimics offers potential new avenues for treating autoimmune conditions and cancer.
- Other names
- FcγRFc gamma ReceptorCD16CD32CD64FcγRIFcγRIIAFcγRIIBFcγRIICFcγRIIIAFcγRIIIB
02
Mechanism of action
Modulation of FcγR-mediated immune responses
03
Biological functions
PhagocytosisAntibody-dependent cell-mediated cytotoxicity (ADCC)Immune complex clearanceImmune response regulationSignal transduction
04
Disease associations
Autoimmune diseasesSystemic lupus erythematosusInfectionCancerInflammation
05
Safety considerations
Potential for off-target effectsRisk of cytokine release syndromeImmune-related adverse events
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