15-Deoxy-delta12,14-PGJ2: endogenous PPARgamma ligand or minor eicosanoid degradation product?

Powell, William S · J Clin Invest · 2003

editorial · Level V

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Abstract

15-Deoxy-Delta12,14-prostaglandin J2 (15d-PGJ2) affects gene transcription by activating PPARgamma and by covalent addition to transcription factors and signaling molecules, However, it is not known whether the high concentrations of 15d-PGJ2 required for these responses are consistent with physiological levels. A new study suggests that in vivo 15d-PGJ2 levels are actually several orders of magnitude below the levels required to induce many of the biological effects attributed to this molecule.

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