Sphingosine-1-phosphate receptor 2 (S1P2) (S1P2)

Sphingosine-1-phosphate receptor 2 (S1P2) is a G protein-coupled receptor (GPCR) that serves as a high-affinity receptor for the bioactive sphingolipid, sphingosine-1-phosphate (S1P) (UniProt O95136). It is one of five S1P receptor subtypes (S1P1-5) but is distinguished by its unique coupling to G12/13 and Gq proteins, which primarily activates the Rho/Rho-kinase signaling pathway (Haak et al., 2017, JBC). This pathway is essential for regulating diverse cellular processes, including the inhibition of cell migration, maintenance of vascular integrity, and modulation of inflammatory responses (IUPHAR/BPS Guide to Pharmacology). In clinical contexts, S1P2 is heavily implicated in the pathogenesis of fibrotic diseases, such as liver and lung fibrosis, where it promotes the activation of myofibroblasts (Kim et al., 2015, BMB Reports). It also plays a complex role in oncology; while it acts as a tumor suppressor in diffuse large B-cell lymphoma, it may promote progression in other cancer types. Unlike other S1P receptors targeted by approved drugs for multiple sclerosis, S1P2 is generally not activated by fingolimod, making it a specific target for novel antagonists currently being explored for fibrosis and vascular disorders (ABL Bio Pipeline).

Other names

S1PR2EDG5Endothelial differentiation G-protein-coupled receptor 5H218LPB2

Antagonism of the S1P2 receptor to inhibit G12/13-mediated Rho signaling pathways (Haak et al., 2017)