Abstract
Prostaglandins (PGs) of the J2 series form in vivo and exert effects on a variety of biological processes. While most of PGs mediate their effects through G protein-coupled receptors, the mechanism of action for the J2 series of PGs remains unclear. Here, we report the PGJ2 and its derivatives are efficacious activators of peroxisome proliferator-activated receptors alpha and gamma (PPAR alpha and PPAR gamma, respectively), orphan nuclear receptors implicated in lipid homeostasis and adipocyte differentiation. The PGJ2 metabolite 15-deoxy-delta 12,14-PGJ2 binds directly to PPAR gamma and promotes efficient differentiation of C3H10T1/2 fibroblasts to adipocytes. These data provide strong evidence that a fatty acid metabolite can function as an adipogenic agent through direct interactions with PPAR gamma and furthermore, suggest a novel mechanism of action for PGs of the J2 series.
MeSH terms
-
Adipocytes / cytology*
-
Animals
-
Binding, Competitive
-
Cell Differentiation / drug effects
-
Cells, Cultured
-
Fibroblasts / cytology
-
Hypoglycemic Agents / pharmacology
-
Ligands
-
Mice
-
Microbodies / drug effects
-
Prostaglandin D2 / analogs & derivatives*
-
Prostaglandin D2 / metabolism
-
Prostaglandin D2 / pharmacology
-
Prostaglandins / metabolism
-
Prostaglandins / pharmacology
-
Pyrimidines / pharmacology
-
Receptors, Cytoplasmic and Nuclear / genetics
-
Receptors, Cytoplasmic and Nuclear / metabolism*
-
Recombinant Fusion Proteins / biosynthesis
-
Rosiglitazone
-
Signal Transduction / physiology
-
Thiazoles / pharmacology
-
Thiazolidinediones*
-
Transcription Factors / genetics
-
Transcription Factors / metabolism*
-
Transcriptional Activation / drug effects*
Substances
-
15-deoxy-delta(12,14)-prostaglandin J2
-
Hypoglycemic Agents
-
Ligands
-
Prostaglandins
-
Pyrimidines
-
Receptors, Cytoplasmic and Nuclear
-
Recombinant Fusion Proteins
-
Thiazoles
-
Thiazolidinediones
-
Transcription Factors
-
Rosiglitazone
-
pirinixic acid
-
Prostaglandin D2
-
ciglitazone