1-Oleoyl lysophosphatidic acid is a species of lysophosphatidic acid (LPA) containing oleic acid at the sn-1 position. Phosphatidic acid is produced either directly through the action of phospholipase D (PLD) or through a two step process involving liberation of diacylglycerol (DAG) by phospholipase C (PLC) followed by phosphorylation of DAG by diglycerol kinase.[1] Hydrolysis of the fatty acid at the sn-2 position by phospholipase A2 (PLA2) yields bioactive LPA. LPA binds to one of five different G protein linked receptors to mediate a variety of biological responses including cell proliferation, smooth muscle contraction, platelet aggregation, neurite retraction, and cell motility.[2],[1] 1-Oleoyl lysophosphatidic acid is the most potent of the LPA analogs for calcium mobilization in A431 cells and for growth stimulation of a variety of cell lines.[3],[4]

Reference:
[1]. Moolenaar, W.H. LPA: A novel lipid mediator with diverse biological actions. Trends in Cell Biology 4, 213-219 (1994).
[2]. Noguchi, K., Ishii, S., and Shimizu, T. Identification of p2y9/GPR23 as a novel G protein-coupled receptor for lysophosphatidic acid, structurally distant from the Edg family. The Journal of Biological Chemisty 278(28), 25600-25606 (2003).
[3]. Jalink, K., Hengeveld, T., Mulder, S., et al. Lysophosphatidic acid-induced Ca2+ mobilization in human A4431 cells: Structure-activity analysis. Biochemistry Journal 307, 609-616 (1995).
[4]. van Corven, E.J., van Rijswijk, A., Jalink, K., et al. Mitogenic action of lysophosphatidic acid and phosphatidic acid on fibroblasts. Dependence on acyl-chain length and inhibition by suramin. Biochemistry Journal 281, 163-169 (1992).