LPA (Lysophosphatidic Acid): LPA is a bioactive lipid that functions as a potent signalling molecule, affecting processes such as cell growth, movement, and survival. It signals by binding to specific G protein-coupled LPA receptors on cell membranes and is produced through the breakdown of phospholipids. Beyond its normal physiological roles, LPA is associated with conditions such as cancer, fibrosis, and cardiovascular disease.