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Resveratrol induces antioxidant defence via transcription factor Yap1p

机译:白藜芦醇通过转录因子Yap1p诱导抗氧化防御

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摘要

Resveratrol is a polyphenol suggested to play a protective role against ageing and age-related diseases. We demonstrate that administering low-doses of resveratrol causes ROS accumulation and transcriptional changes in yeast cells and human adipocytes. These changes in gene expression depend on the oxidative transcription factor Yap1p. In particular, resveratrol induces expression of Yap1p gene targets, such as TRX2, TRR1 or AHP1, in a Yap1p-dependent mode. Under resveratrol treatment, Yap1p is phosphorylated and accumulated in the nucleus. Yap1p knockout causes resveratrol sensitivity, which totally depends on the presence of the C-terminal region of Yap1p. Thus, resveratrol may enhance cellular lifespan by hormetic ROS accumulation, which leads to strengthening the cells' antioxidant capacity. Copyright (C) 2012 John Wiley & Sons, Ltd.
机译:白藜芦醇是一种多酚,被认为对衰老和与年龄有关的疾病具有保护作用。我们证明了低剂量白藜芦醇的给药会导致ROS积累和酵母细胞和人类脂肪细胞中的转录变化。这些基因表达的变化取决于氧化转录因子Yap1p。特别是,白藜芦醇以Yap1p依赖性模式诱导Yap1p基因靶标的表达,例如TRX2,TRR1或AHP1。在白藜芦醇治疗下,Yap1p磷酸化并积累在细胞核中。 Yap1p基因敲除引起白藜芦醇敏感性,这完全取决于Yap1p C端区域的存在。因此,白藜芦醇可以通过有毒的ROS积累来延长细胞寿命,从而增强细胞的抗氧化能力。版权所有(C)2012 John Wiley&Sons,Ltd.

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