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Review ArticleReview Article

The Prostanoid EP4 Receptor and Its Signaling Pathway

Utako Yokoyama, Kousaku Iwatsubo, Masanari Umemura, Takayuki Fujita and Yoshihiro Ishikawa
David R. Sibley, ASSOCIATE EDITOR
Pharmacological Reviews July 2013, 65 (3) 1010-1052; DOI: https://doi.org/10.1124/pr.112.007195
Utako Yokoyama
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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Kousaku Iwatsubo
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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Masanari Umemura
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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Takayuki Fujita
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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Yoshihiro Ishikawa
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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David R. Sibley
Cardiovascular Research Institute, Yokohama City University, Yokohama, Japan (U.Y., M.U., T.F., Y.I.); and Department of Cell Biology and Molecular Medicine University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey (K.I.)
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Abstract

The EP4 prostanoid receptor is one of four receptor subtypes for prostaglandin E2. It belongs to the family of G protein–coupled receptors. It was originally identified, similar to the EP2 receptor as a Gsα-coupled, adenylyl cyclase–stimulating receptor. EP4 signaling plays a variety of roles through cAMP effectors, i.e., protein kinase A and exchange protein activated by cAMP. However, emerging evidence from studies using pharmacological approaches and genetically modified mice suggests that EP4, unlike EP2, can also be coupled to Giα, phosphatidylinositol 3-kinase, β-arrestin, or β-catenin. These signaling pathways constitute unique roles for the EP4 receptor. EP4 is widely distributed in the body and thus plays various physiologic and pathophysiologic roles. In particular, EP4 signaling is closely related to carcinogenesis, cardiac hypertrophy, vasodilation, vascular remodeling, bone remodeling, gastrointestinal homeostasis, renal function, and female reproductive function. In addition to the classic anti-inflammatory action of EP4 on mononuclear cells and T cells, recent evidence has shown that EP4 signaling contributes to proinflammatory action as well. The aim of this review is to present current findings on the biologic functions of the EP4 receptor. In particular, we will discuss its diversity from the standpoint of EP4-mediated signaling.

Footnotes

  • This work was supported by grants from the Ministry of Education, Culture, Sports, Science and Technology of Japan (to U.Y., Y.I.); Adaptable and Seamless Technology Transfer Program Through Target-Driven R & D (Grant AS231Z00231G) (to U.Y.); Grant-in-Aid for Scientific Research on Innovative Areas [Grants 23116514 and 25116719 (to U.Y.)22136009 (to Y.I.)]; the Ministry of Health, Labor and Welfare (to Y.I.); the Yokohama Foundation for Advanced Medical Science (to U.Y.); the Grant for Research and Development Project of Yokohama City University (to Y.I.); the Takeda Science Foundation (to U.Y., Y.I.); the Japan Heart Foundation Research Grant (to U.Y.); the Sumitomo Foundation (to U.Y.); the Mochida Memorial Foundation for Medical and Pharmaceutical Research (to U.Y.); and the Kanae Foundation for the Promotion of Medical Science (to U.Y.)

  • dx.doi.org/10.1124/pr.112.007195.

  • Copyright © 2013 by The American Society for Pharmacology and Experimental Therapeutics
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Pharmacological Reviews: 65 (3)
Pharmacological Reviews
Vol. 65, Issue 3
1 Jul 2013
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Review ArticleReview Article

EP4 Signaling

Utako Yokoyama, Kousaku Iwatsubo, Masanari Umemura, Takayuki Fujita and Yoshihiro Ishikawa
Pharmacological Reviews July 1, 2013, 65 (3) 1010-1052; DOI: https://doi.org/10.1124/pr.112.007195

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Review ArticleReview Article

EP4 Signaling

Utako Yokoyama, Kousaku Iwatsubo, Masanari Umemura, Takayuki Fujita and Yoshihiro Ishikawa
Pharmacological Reviews July 1, 2013, 65 (3) 1010-1052; DOI: https://doi.org/10.1124/pr.112.007195
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