Receptors for secreted factors

Receptors for secreted factors is a broad functional category rather than a specific molecular target, encompassing diverse protein families such as G protein-coupled receptors (GPCRs), receptor tyrosine kinases (RTKs), and cytokine receptors (Reactome, R-HSA-9675108). These receptors are responsible for transducing signals from extracellular ligands—including hormones, growth factors, and neurotransmitters—into intracellular responses that regulate cell growth, metabolism, and homeostasis (Alberts et al., Molecular Biology of the Cell, 2014). Because this classification encompasses thousands of distinct proteins with diverse structures and biological roles, it does not constitute a single, valid therapeutic target for drug development. Instead, drug discovery efforts focus on specific, well-defined receptors within this class to treat a wide range of pathologies, including oncology, cardiovascular disease, and metabolic disorders (Hopkins & Groom, Nature Reviews Drug Discovery, 2002). Consequently, any pharmacological profile or safety assessment must be conducted at the level of individual receptor proteins rather than this broad functional grouping.

Other names

Secreted signaling molecule receptorsCell surface receptors for secreted ligandsReceptors for extracellular factors

Not applicable as a single target; individual members within this broad class are targeted via agonism, antagonism, or allosteric modulation of specific signaling pathways.