Immune system receptor

Immune system receptor is a broad classification encompassing a vast array of proteins that facilitate the detection of and response to foreign pathogens, damaged cells, and endogenous signals (Janeway et al., 2001). These receptors are categorized into pattern recognition receptors (PRRs), which detect conserved microbial motifs, and antigen-specific receptors like T-cell and B-cell receptors that provide adaptive immunity (NIH, 2023). Additionally, cytokine and chemokine receptors coordinate the complex signaling network between various immune cell types to orchestrate inflammatory and resolution phases (StatPearls, 2023). In clinical medicine, these receptors are primary targets for treating a wide range of conditions, including autoimmune disorders, where receptor blockade can reduce pathological inflammation, and oncology, where checkpoint inhibitors release the brakes on the immune system to attack tumors (PubMed, 2022). Because this term encompasses thousands of distinct proteins with varying structures and functions, it is generally considered a functional category rather than a single therapeutic target (UniProt, 2024).

Other names

Pattern recognition receptorsAntigen receptorsCytokine receptorsChemokine receptorsFc receptorsToll-like receptorsT-cell receptorsB-cell receptorsComplement receptors

Drugs targeting immune system receptors typically function through competitive antagonism, monoclonal antibody-mediated blockade of ligand binding, or agonism to stimulate specific immune pathways (PubMed, 2022). Some therapies involve modulating receptor expression or interfering with downstream intracellular signaling cascades to alter immune cell behavior (StatPearls, 2023).