Lysophospholipids constitute a group of important lipid mediators; lysophosphatidic acid (LPA) a glycerolysophospholipid and sphingosine 1-phosphate (SIP), a lysosphingolipid. Sphingosine 1-phosphate is a bioactive lipid derived from metabolism of sphingomyelin. Sphingosine 1-phosphate is implicated in the regulation of many cellular functions including proliferation, apoptosis, survival, adhesion, differentiation, and migration.nSphingosine 1-phosphate exerts its activity through five distinct G-protein-coupled receptors, (also named endothelial differentiation gene receptors - EDG); S1PR1 (EDG-1), S1PR2 (EDG-5), S1PR3 (EDG-3), S1PR4 (EDG-6), and S1PR5 (EDG-8).nSphingosine 1-Phosphate Receptor 2 (S1PR2) is ubiquitously expressed. S1PR2 mRNA was detected in the brain, heart, spleen, liver, lung, thymus, kidney and skeletal muscle4. Unlike S1PR1, knockout of SIPR2 gene is not lethal