Journal of Pharmacological Sciences
Online ISSN : 1347-8648
Print ISSN : 1347-8613
ISSN-L : 1347-8613
Short Communications
15d-Prostaglandin J2 Enhancement of Nerve Growth Factor–Induced Neurite Outgrowth Is Blocked by the Chemoattractant Receptor– Homologous Molecule Expressed on T-Helper Type 2 Cells (CRTH2) Antagonist CAY10471 in PC12 Cells
Michiyoshi HatanakaNorihiro ShibataNorihito ShintaniRyota HabaAtsuko HayataHitoshi HashimotoAkemichi Baba
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2010 Volume 113 Issue 1 Pages 89-93

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Abstract

The chemoattractant receptor–homologous molecule expressed on T-helper type 2 cells (CRTH2) is the most recently identified prostaglandin (PG) receptor for both PGD2 and 15-deoxy-Δ12,14-PGJ2 (15d-PGJ2). We examined the mechanism by which 15d-PGJ2 enhances nerve growth factor (NGF)-induced neurite outgrowth in PC12 cells. CAY10471 (CRTH2 antagonist) inhibited both the neurite-promotion and p38 mitogen-activated protein (MAP) kinase phosphorylation induced by 15d-PGJ2. In contrast, 13,14-dihydro-15-keto-PGD2 (DK-PGD2) (selective CRTH2 agonist) stimulated its phosphorylation but failed to produce neurite-promoting effects. These suggest, for the first time, the action of 15d-PGJ2 is mediated by CRTH2, although the CRTH2 activation alone is insufficient for the underlying action.

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© The Japanese Pharmacological Society 2010
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