Cytokine and growth factor receptors

Cytokine and growth factor receptors represent a diverse superfamily of cell-surface proteins that translate extracellular signals into specific cellular responses. Cytokine receptors are essential for modulating the immune system, regulating inflammation, and directing hematopoiesis, often utilizing the JAK-STAT signaling cascade [StatPearls: Cytokine Receptors]. Growth factor receptors, particularly receptor tyrosine kinases (RTKs), are pivotal in controlling cell cycle progression, differentiation, and tissue repair [Nature: Growth factor receptors]. Dysregulation of these receptors, such as through gene amplification or activating mutations, is a central mechanism in the development of various malignancies and autoimmune disorders [NCBI: Signaling in Disease]. Therapeutic targeting of these receptors has revolutionized medicine, employing monoclonal antibodies to block ligand-receptor interactions and small-molecule inhibitors to arrest intracellular signaling [PubMed: Targeted Therapies]. However, because these receptors are involved in homeostatic processes, their inhibition can lead to adverse effects like immunosuppression or impaired wound healing [NIH: Drug Safety]. Common examples include the EGFR and HER2 receptors in oncology, as well as various interleukin receptors in immunology.

Other names

Cytokine receptorsGrowth factor receptorsCell surface signaling receptorsTransmembrane signaling receptors

Monoclonal antibody-mediated blockade of extracellular ligand binding or small-molecule inhibition of intracellular tyrosine kinase or Janus kinase activity, thereby arresting downstream signaling cascades [PubMed: Targeted Therapies].