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PubMed · 12528468

[Prostaglandin E2 synthases].

Yoshihito Nakatani·Ichiro Kudo
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Abstract

Prostaglandin E2 (PGE2) is widely distributed in various tissues, and exhibits various biologically important activities. PGE2 synthase (PGES) catalyzes conversion of COX-derived PGH2 to PGE2. It now appears that there are at least three distinct types of PGES in mammals. We identified two distinct glutathione-dependent PGESs. Cytosolic PGES (cPGES), known as p23, is constitutively and ubiquitously expressed and predominantly converts COX-1-derived PGH2 to PGE2. We find that the regulation of cPGES/p23 activity in cells depends on its association with hsp90. Microsomal PGES-1 (mPGES-1), identical to MGST1-L1, is an inducible perinuclear enzyme that is functionally linked with COX-2 in marked preference to COX-1. COX-2 and mPGES-1 are essential components for delayed PGE2 synthesis, which may be linked to inflammation, fever, osteogenesis, and even cancer. Most recently, glutathione-nonspecific mPGES-2, homologous to glutaredoxin and thioredoxin, was identified. These PGESs seem to be a potential novel target for drug development.

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AnimalsDinoprostoneDrug DesignGlutathioneHumansIntramolecular OxidoreductasesMolecular ChaperonesPhosphoproteinsProstaglandin H2Prostaglandin-E SynthasesProstaglandin-Endoperoxide SynthasesProstaglandins HJournal ArticleReview

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Yoshihito Nakatani, Ichiro Kudo. 2002. [Prostaglandin E2 synthases].. https://doi.org/10.1254/fpj.120.373

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