Identification of a phosphothionate analogue of lysophosphatidic acid (LPA) as a selective agonist of the LPA3 receptor

Yutaka Hasegawa, James R. Erickson, Graham J. Goddard, Shuangxing Yu, Shuying Liu, Kwai Wa Cheng, Astrid Eder, Koji Bandoh, Junken Aoki, Renata Jarosz, Andrew D. Schrier, Kevin R. Lynch, Gordon Mills, Xianjun Fang

Research output: Contribution to journalArticle

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Abstract

Lysophosphatidic acid (LPA) is a bioactive lysophospholipid mediator that acts through G protein-coupled receptors. Most cell lines in culture express one or more LPA receptors, making it difficult to assign a response to specific LPA receptors. Dissection of the signaling properties of LPA has been hampered by lack of LPA receptor subtype-specific agonists and antagonists. The present study characterizes an ester-linked thiophosphate derivative (1-oleoyl-2-O-methyl-rac-glycerophosphothionate, OMPT) of LPA. OMPT is a functional LPA analogue with potent mitogenic activity in fibroblasts. In contrast to LPA, OMPT does not couple to the pheromone response through the LPA1 receptor in yeast cells. OMPT induces intracellular calcium increases efficiently in LPA3 receptor-expressing Sf9 cells but poorly in LPA2 receptor-expressing cells. Guanosine 5′-O-(3-[35S]thio)triphosphate binding assays in mammalian cells showed that LPA exhibits agonistic activity on all three LPA receptor subtypes, whereas OMPT has a potent agonistic effect only on the LPA3 receptor. In transiently transfected HEK293 cells, OMPT stimulates mitogen-activated protein kinases through the LPA3 but not the LPA1 or LPA2 receptors. Furthermore, OMPT-induced intracellular calcium mobilization in mammalian cells is efficiently inhibited by the LPA1/LPA3 receptor-selective antagonist VPC12249. These results establish that OMPT is an LPA3-selective agonist. OMPT binding to the LPA3 receptor in mammalian cells is sufficient to elicit multiple responses, including activation of G proteins, calcium mobilization, and activation of mitogen-activated protein kinases. Thus OMPT offers a powerful probe for the dissection of LPA signaling events in complex mammalian systems.

Original languageEnglish (US)
Pages (from-to)11962-11969
Number of pages8
JournalJournal of Biological Chemistry
Volume278
Issue number14
DOIs
StatePublished - Apr 4 2003
Externally publishedYes

Fingerprint

Lysophosphatidic Acid Receptors
Cells
Dissection
Mitogen-Activated Protein Kinases
Calcium
lysophosphatidic acid
Chemical activation
Lysophospholipids
Guanosine 5'-O-(3-Thiotriphosphate)
Sf9 Cells
Guanosine
Pheromones
HEK293 Cells
Fibroblasts
G-Protein-Coupled Receptors
GTP-Binding Proteins
Cell culture
Yeast

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Identification of a phosphothionate analogue of lysophosphatidic acid (LPA) as a selective agonist of the LPA3 receptor. / Hasegawa, Yutaka; Erickson, James R.; Goddard, Graham J.; Yu, Shuangxing; Liu, Shuying; Cheng, Kwai Wa; Eder, Astrid; Bandoh, Koji; Aoki, Junken; Jarosz, Renata; Schrier, Andrew D.; Lynch, Kevin R.; Mills, Gordon; Fang, Xianjun.

In: Journal of Biological Chemistry, Vol. 278, No. 14, 04.04.2003, p. 11962-11969.

Research output: Contribution to journalArticle

Hasegawa, Y, Erickson, JR, Goddard, GJ, Yu, S, Liu, S, Cheng, KW, Eder, A, Bandoh, K, Aoki, J, Jarosz, R, Schrier, AD, Lynch, KR, Mills, G & Fang, X 2003, 'Identification of a phosphothionate analogue of lysophosphatidic acid (LPA) as a selective agonist of the LPA3 receptor', Journal of Biological Chemistry, vol. 278, no. 14, pp. 11962-11969. https://doi.org/10.1074/jbc.M209168200
Hasegawa, Yutaka ; Erickson, James R. ; Goddard, Graham J. ; Yu, Shuangxing ; Liu, Shuying ; Cheng, Kwai Wa ; Eder, Astrid ; Bandoh, Koji ; Aoki, Junken ; Jarosz, Renata ; Schrier, Andrew D. ; Lynch, Kevin R. ; Mills, Gordon ; Fang, Xianjun. / Identification of a phosphothionate analogue of lysophosphatidic acid (LPA) as a selective agonist of the LPA3 receptor. In: Journal of Biological Chemistry. 2003 ; Vol. 278, No. 14. pp. 11962-11969.
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