Cytokines or cell surface receptors

The term "Cytokines or cell surface receptors" refers to a broad and heterogeneous category of biological entities rather than a single, specific therapeutic target. Cytokines are small, secreted signaling proteins that mediate and regulate immunity, inflammation, and hematopoiesis (Nature, 2023). Cell-surface receptors are integral membrane proteins that receive extracellular signals and convert them into intracellular responses, encompassing families such as G protein-coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs) (NCBI, 2022). Because this classification includes thousands of distinct molecules with diverse structures and functions, it is considered too broad for specific drug-target characterization. In clinical practice, specific cytokines like Tumor Necrosis Factor-alpha (TNF-α) or receptors like the Interleukin-6 (IL-6) receptor are targeted to treat inflammatory and oncological diseases (PubMed, 2021). Consequently, while these molecules are vital for physiological signaling, the phrase itself describes a class of targets rather than a unique molecular entity. Drugs interacting with these classes include monoclonal antibodies that neutralize ligands or block receptor binding sites to modulate immune activity (StatPearls, 2023).

Other names

CytokinesCell-surface proteinsMembrane receptorsCell signaling molecules

Various mechanisms including ligand neutralization, receptor antagonism, and signal transduction modulation depending on the specific molecule targeted.