Cell Res:Skp2决定了糖酵解和TCA循环之间细胞周期依赖的代谢波动

2020-07-31 AlexYang MedSci原创

葡萄糖主要是通过氧化磷酸化或者糖酵解进行代谢,且在静止细胞与增殖细胞(包括肿瘤细胞)之间存在差异。然而,葡萄糖代谢是如何与哺乳动物细胞的细胞周期进行协同的仍然不清楚。

葡萄糖主要是通过氧化磷酸化或者糖酵解进行代谢,且在静止细胞与增殖细胞(包括肿瘤细胞)之间存在差异。然而,葡萄糖代谢是如何与哺乳动物细胞的细胞周期进行协同的仍然不清楚。

最近,研究人员表明了哺乳动物细胞在G1期主要利用三羧酸(TCA)循环进行葡萄糖代谢,而在S期更倾向于糖酵解途径。从机制上讲,细胞周期与代谢的耦合主要是通过及时破坏Skp2依赖的关键的TCA循环酶-IDH1/2来实现。因此,SKP2缺乏可破坏IDH1细胞周期依赖性蛋白丰度的波动,并减少S期的糖酵解。更多的是,前列腺癌细胞中Skp2丰度的提高能够去除IDH1的稳定性,从而有利于糖酵解和随后肿瘤的发生。

最后,研究人员指出,细胞周期异常和糖酵解这两个癌症标志之间存在着联系,并阐明了哺乳动物细胞代谢波动与周期性细胞周期的耦合的潜在机制。

原始出处:

Jing Liu, Yunhua Peng, Le Shi et al. Skp2 dictates cell cycle-dependent metabolic oscillation between glycolysis and TCA cycle. Cell Res. 15 July 2020

 

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    2020-12-17 维他命
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    2021-03-11 paperyu
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    2020-07-31 ms3000000449926787

    学习了!

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