Ras-MAP kinase signaling by lysophosphatidic acid and other G protein-coupled receptor agonists
- 26 March 2001
- journal article
- review article
- Published by Springer Nature in Oncogene
- Vol. 20 (13) , 1540-1546
- https://doi.org/10.1038/sj.onc.1204187
Abstract
Lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P) are extracellular lipid mediators that signal through distinct members of the Edg/LP subfamily of G protein-coupled receptors (GPCRs). LPA and S1P receptors are expressed in almost every cell type and can couple to multiple G proteins (Gi, Gq and G12/13) to mediate a great variety of responses, ranging from rapid morphological changes to long-term stimulation of cell proliferation. LPA serves as the prototypic GPCR agonist that activates the small GTPases Ras (via Gi) and RhoA (via G12/13), leading to activation of the mitogen-activated protein kinase (MAPK) cascade and reorganization of the actin cytoskeleton, respectively. This review focuses on our current insights into how Ras-MAPK signaling is regulated by GPCR agonists in general, and by LPA in particular.Keywords
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