| Literature DB >> 19386608 |
Keisuke Yanagida1, Kayo Masago, Hiroki Nakanishi, Yasuyuki Kihara, Fumie Hamano, Yoko Tajima, Ryo Taguchi, Takao Shimizu, Satoshi Ishii.
Abstract
p2y5 is an orphan G protein-coupled receptor that is closely related to the fourth lysophosphatidic acid (LPA) receptor, LPA4. Here we report that p2y5 is a novel LPA receptor coupling to the G13-Rho signaling pathway. "LPA receptor-null" RH7777 and B103 cells exogenously expressing p2y5 showed [3H]LPA binding, LPA-induced [35S]guanosine 5'-3-O-(thio)triphosphate binding, Rho-dependent alternation of cellular morphology, and Gs/13 chimeric protein-mediated cAMP accumulation. LPA-induced contraction of human umbilical vein endothelial cells was suppressed by small interfering RNA knockdown of endogenously expressed p2y5. We also found that 2-acyl-LPA had higher activity to p2y5 than 1-acyl-LPA. A recent study has suggested that p2y5 is an LPA receptor essential for human hair growth. We confirmed that p2y5 is a functional LPA receptor and propose to designate this receptor LPA6.Entities:
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Year: 2009 PMID: 19386608 PMCID: PMC2719412 DOI: 10.1074/jbc.M808506200
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157