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首页> 外文期刊>Reproductive toxicology >Trans-resveratrol inhibits phosphorylation of Smad2/3 and represses FSHbeta gene expression by a SirT1-independent pathway in LbetaT2 gonadotrope cells.
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Trans-resveratrol inhibits phosphorylation of Smad2/3 and represses FSHbeta gene expression by a SirT1-independent pathway in LbetaT2 gonadotrope cells.

机译:反式白藜芦醇通过SirT1非依赖性途径抑制LbetaT2促性腺激素细胞中Smad2 / 3的磷酸化并抑制FSHbeta基因表达。

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摘要

Resveratrol (trans-3,5,4'-trihydroxystilbene), a polyphenol found in red wine, has multiple beneficial activities that are similar to caloric restriction. In this study, we analyzed the effect of resveratrol on the gonadotropin genes, follicle-stimulating hormone (FSHbeta) and luteinizing hormone (LHbeta) in LbetaT2 immortalized mouse gonadotrope cells. Resveratrol specifically inhibited activin-induced FSHbeta mRNA and protein expression, and reduced activin-stimulated Smad2/3 phosphorylation. Knockdown of SirT1 gene expression or SirT1 inhibition did not block repression of FSHbeta expression or suppression of Smad2/3 phosphorylation, but did increase p53 acetylation. Taken together, our results suggest that resveratrol down-regulates Smad2/3 phosphorylation and suppresses FSHbeta expression via a SirT1-independent pathway.
机译:白藜芦醇(反式3,5,4'-三羟基sti),一种在红酒中发现的多酚,具有多种有益的活性,类似于热量限制。在这项研究中,我们分析了白藜芦醇对LbetaT2永生化小鼠促性腺激素细胞中促性腺激素基因,促卵泡激素(FSHbeta)和促黄体生成激素(LHbeta)的影响。白藜芦醇特异性抑制激活素诱导的FSHbeta mRNA和蛋白表达,并减少激活素刺激的Smad2 / 3磷酸化。击倒SirT1基因表达或抑制SirT1不会阻止FSHbeta表达的抑制或Smad2 / 3磷酸化的抑制,但确实增加了p53乙酰化。两者合计,我们的结果表明,白藜芦醇下调Smad2 / 3磷酸化和抑制通过SirT1独立途径的FSHbeta表达。

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