NAT METAB:心磷脂补充可延长寿命

2020-05-22 MedSci原创 MedSci原创

多组学分析显示,NFYB-1是溶酶体蛋白prosaposin的有效抑制剂,prosaposin是糖磷脂代谢的调节剂。

线粒体是一种多维细胞器,其活性对于细胞活力和生物体的长寿至关重要,然而,至今为止,跨越这些不同层次的组织的基本调节机制仍然难以捉摸。

最近,研究人员发现,在线虫中,核转录因子Y的β亚基(NFYB-1)(NF-Y转录复合物的一个亚基)是线粒体功能的一个重要调节器。研究人员进行了RNA干扰(RNAi)筛选,发现NFYB-1的缺失能够扰动线粒体基因表达,减少氧消耗,使得线粒体碎片化,线粒体应激途径中断,线粒体心磷脂水平下降,生物体寿命缩短。

多组学分析显示,NFYB-1是溶酶体蛋白prosaposin的有效抑制剂,prosaposin是糖磷脂代谢的调节剂。在NFYB-1缺失背景下,限制prosaposin的表达出人意料地恢复了心磷脂蛋白的产生、线粒体功能和长寿。

同样,心磷脂补充也能拯救NFYB-1缺失的表型。

这些研究结果表明,NFYB-1-prosaposin轴通过脂质库协调溶酶体到线粒体的信号传导,增强细胞线粒体功能和机体健康。

 

原始出处:

Rebecca George Tharyan et al. NFYB-1 regulates mitochondrial function and longevity via lysosomal prosaposin, Nature Metabolism (2020). 

 

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    2020-12-05 liye789132251
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    2021-02-16 一闲
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    2021-04-18 zhouqu_8
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