Phospholipid growth factor (PLGF)

Phospholipid growth factor (PLGF) is a term proposed to describe a group of endogenous phospholipid-derived mediators, primarily glycerol- and sphingolipids, that function similarly to growth factors by regulating cell growth, proliferation, and signaling pathways.[4][5] These mediators arise from phospholipid metabolism, including hydrolysis by phospholipases that generate bioactive lipids like phosphatidic acid (PA), diacylglycerol (DAG), and lysophospholipids, which influence membrane dynamics, protein recruitment, and cellular responses.[1][2] In physiological contexts, PLGF-like molecules support processes such as cell migration, survival, and tissue remodeling, often through autocrine or paracrine signaling via G protein-coupled receptors (GPCRs).[2] Their roles overlap with broader phospholipid functions in modulating cytoskeleton organization, vesicular transport, and hormone responses, particularly in developmental and stress-related pathways.[1] In disease, particularly cancer, altered phospholipid mediators contribute to tumor growth, metastasis, and inflammation by promoting proliferative signals and membrane changes in tumor cells.[3][6] Unlike canonical therapeutic targets such as specific receptors or enzymes, PLGF lacks a defined protein structure or gene product, making it unsuitable for direct drug targeting; instead, related enzymes like phospholipases or lysophospholipid acyltransferases (LPCATs) are studied for therapeutic modulation in conditions like cancer and metabolic disorders.[3] No approved drugs directly interact with PLGF as a singular entity, and its vague classification limits clinical translation.[4][5]

Other names

PLGFphospholipid growth-factor mediatorsglycerol- and sphingolipid growth mediators