Paracrine effects

**Paracrine effects** denote a type of cellular communication where cells secrete signaling molecules—such as growth factors, cytokines, and chemokines—into the extracellular space, which then influence the activity of nearby cells[1][5][7][9]. Unlike endocrine signaling (which acts over long distances via circulating hormones), paracrine signaling acts locally. It is mediated by factors including VEGF, FGF, PDGF, and interleukins, which can promote angiogenesis, cell proliferation, immune modulation, and tissue regeneration[1][2][8]. Paracrine effects are fundamental to developmental biology, stem cell biology, wound healing, cancer progression, and the functioning of many organs. They rely on highly conserved receptors and intracellular signaling pathways (such as PI3K/Akt, MAPK/ERK, Wnt/β-catenin)[2][5]. Importantly, "Paracrine effects" is not a druggable molecular target but a process, so entries such as interacting drugs, mechanism of action, and biomarkers for this entity are not applicable. **Key Point:** - "Paracrine effects" is a biological process, *not* a therapeutic target molecule or receptor; as such, it should not be listed as a canonical target in structured drug discovery databases[5][9].

Other names

paracrine signalingparacrine mechanismparacrine factor release