Growth factor release from platelet

Growth factor release from platelet describes a physiological process where platelets activated by injury or stimuli secrete a mixture of powerful growth factors and cytokines—mainly PDGF, TGF-β, VEGF, IGF-1, and IL-1β—from their alpha-granules[1][5]. This release supports tissue regeneration, angiogenesis, immune modulation, and cell migration, and is exploited in therapies like platelet-rich plasma (PRP). Each individual growth factor released has distinct receptor targets and signaling effects. However, "growth factor release from platelet" does not refer to a unique molecular entity or receptor, and thus is not considered a canonical therapeutic target. The phrase is often used broadly in clinical and biological studies to reference the composite pro-repair milieu created when platelets degranulate at sites of tissue damage or inflammation[1][3][5].

Other names

Platelet-derived growth factorsPlatelet growth factor releasePlatelet-released growth factors

Platelet activation triggers release of growth factors via degranulation, following receptor-mediated signaling (especially through G protein-coupled receptors and integrins)[2] Some drugs act by inhibiting the receptors for released growth factors (e.g., PDGFR inhibition by imatinib)[4][5]