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- W2057560147 abstract "Peroxisome proliferator-activated receptor (PPAR)γ is a well-known master regulator for the differentiation and maturation of adipocytes. Prostaglandin (PG) D(2) can be produced in adipocytes and dehydrated to J(2) series of PGs including 15-deoxy-Δ(12,14)-PGJ(2) (15d-PGJ(2)) and Δ(12)-PGJ(2), which serve as pro-adipogenic prostanoids through the activation of PPARγ. However, the quantitative determination of Δ(12)-PGJ(2) has not been attempted during the life stage of adipocytes. In this study, we developed an enzyme-linked immunosorbent assay using mouse antiserum specific for Δ(12)-PGJ(2). According to the standard curve, the amount of Δ(12)-PGJ(2) can be measured from 0.5 pg to 14.4 ng in an assay. Our antiserum did not recognize most other prostanoids including 15d-PGJ(2), while it only showed the cross-reaction of 28% with unstable PGJ(2). This immunological assay was applied to the determination of the endogenous formation of Δ(12)-PGJ(2) in cultured 3T3-L1 adipocytes during the maturation phase. The ability of cultured adipocytes to form endogenous Δ(12)-PGJ(2) increased gradually at an earlier stage of the maturation phase and detectable at higher levels than 15d-PGJ(2). Treatment of cultured cells with either aspirin or indomethacin, a general cyclooxygenase inhibitor, significantly reduced the production of endogenous Δ(12)-PGJ(2) in the maturation medium as expected. Furthermore, we evaluated individually the exogenous effects of PGJ(2) series at various doses on adipogenesis during the maturation phase. Although Δ(12)-PGJ(2) was slightly less potent than 15d-PGJ(2), each of these PGJ(2) series rescued effectively both the accumulation of fats and the gene expression of typical adipocyte-markers that were attenuated in the presence of aspirin. Taken together, our findings indicate that endogenous Δ(12)-PGJ(2) contributes substantially to the up-regulation of adipogenesis program through the activation of PPARγ together with 15d-PGJ(2) during the maturation phase of cultured adipocytes." @default.
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- W2057560147 date "2011-04-01" @default.
- W2057560147 modified "2023-10-16" @default.
- W2057560147 title "Development of enzyme-linked immunosorbent assay for Δ12-prostaglandin J2 and its application to the measurement of the endogenous product generated by cultured adipocytes during the maturation phase" @default.
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- W2057560147 doi "https://doi.org/10.1016/j.prostaglandins.2010.12.005" @default.
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