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Immune effector cell (via Fc receptor)

Molecular classification
Receptor
01

Overview

Immune effector cells, such as natural killer (NK) cells, macrophages, neutrophils, monocytes, and some B cells, mediate their functions through Fc receptors (FcRs). These receptors are critical for linking the humoral immune response—mediated by antibodies—to cellular immune responses. FcRs recognize the constant (Fc) region of antibodies that are bound to antigens on target cells or pathogens. Engagement of FcRs triggers downstream signaling pathways within effector cells, leading to processes like ADCC, ADCP, CDC and immunomodulation.

02

Mechanism of action

Binding of Fc region of antibody to Fc receptor on immune effector cells, triggering ADCC, ADCP, or CDC

03

Biological functions

Immune responseAntibody-dependent cellular cytotoxicity (ADCC)Antibody-dependent cellular phagocytosis (ADCP)Complement-dependent cytotoxicity (CDC)Immunomodulation
04

Disease associations

CancerInfectionInflammationAutoimmune diseases
05

Safety considerations

Cytokine release syndromeOff-target effectsImmunogenicityInflammation
06

Interacting drugs

Therapeutic antibodies

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