AGING CELL:白藜芦醇延长寿命少不了它

2018-12-23 海北 MedSci原创

已有的研究显示,白藜芦醇(RSV)通过激活sirtuin延长多种生物的寿命。然而至今为止,RSV介导的长寿是否完全依赖于sirtuin仍然存在争议。

已有的研究显示,白藜芦醇(RSV)通过激活sirtuin延长多种生物的寿命。然而至今为止,RSV介导的长寿是否完全依赖于sirtuin仍然存在争议。因此,我们还需要澄清关于RSV生物活性的遗传要求的其他机制,以更好地利用RSV的有益效果。

最近,在使用秀丽隐杆线虫(Caenorhabditis elegans)作为模型系统的研究中,研究人员发现MPK-1(一种ERK同系物)信号传导对于RSV介导的sir-2.1 / sirtuin突变体以及野生型蠕虫的长寿是必需的。研究人员证明了MPK-1通过SKN-1的核积累,以SIR-2.1 / DAF-16途径非依赖性方式促进RSV介导的寿命延长。 

RSV在调节寿命方面的积极作用被sir-2.1daf-16突变体中针对mpk-1RNA干扰完全消除,强烈表明MPK-1 / SKN-1途径参与RSV介导的寿命延长,并且独立于SIR-2.1 / DAF-16

研究人员还发现RSV通过MPK-1保护蠕虫免受氧化应激。除了机体衰老外,RSV通过线虫种系中的MPK-1防止了与年龄相关的有丝分裂生殖细胞,育雏大小和生殖跨度的丧失。

因此,该研究结果不仅为RSV对机体寿命的争议性影响提供了新的机制见解,而且还在利用RSV改善衰老相关疾病方面具有重要意义。


原始出处:

Dong Suk Yoon et al. MPK‐1/ERK is required for the full activity of resveratrol in extended lifespan and reproduction. AGING CELL 2018; doi: https://doi.org/10.1111/acel.12867


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    2019-05-31 维他命
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    2018-12-23 lietome2

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