LPA (Lysophosphatidic Acid): LPA is a bioactive lipid that acts as a powerful signaling molecule, influencing 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 linked to conditions such as cancer, fibrosis, and cardiovascular disease.