The ATM protein kinase and cellular redox signaling: beyond the DNA damage response.

The ATM protein kinase and cellular redox signaling: beyond the DNA damage response.
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DOI:
10.1016/j.tibs.2011.10.002
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发表时间:
2012-01
影响因子:
13.8
通讯作者:
Paull, Tanya T.
Paull, Tanya T.
中科院分区:
生物学1区
文献类型:
--
作者:
Ditch, Scott;Paull, Tanya T.

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共济失调-毛细血管扩张突变(ATM)蛋白激酶最为人所知的是它在DNA损伤反应中的作用,但最近的发现表明,它也作为一个氧化还原传感器来控制人类细胞中的活性氧水平。在这里,我们回顾了支持ATM可以被氧化直接激活这一结论的证据,以及来自ATM缺陷患者和小鼠模型的各种观察结果,这些观察指向ATM在氧化应激反应中的重要性。我们还讨论了该激酶通过作用于肿瘤抑制因子P53、AMP激活蛋白激酶(AMPK)、哺乳动物雷帕霉素靶标(MTOR)和缺氧诱导因子-1(HIF-1)来调节线粒体功能和代谢控制的作用,以及这些酶的调节在ATM缺陷患者和癌细胞中可能受到的影响。
The ataxia-telangiectasia mutated (ATM) protein kinase is best known for its role in the DNA damage response, but recent findings suggest that it also functions as a redox sensor that controls the levels of reactive oxygen species in human cells. Here, we review the evidence supporting the conclusion that ATM can be directly activated by oxidation, as well as various observations from ATM-deficient patients and mouse models that point toward the importance of ATM in oxidative stress responses. We also discuss the roles of this kinase in regulating mitochondrial function and metabolic control through its action on tumor suppressor p53, AMP-activated protein kinase (AMPK), mammalian target of rapamycin (mTOR) and hypoxia-inducible factor-1 (HIF-1), and how the regulation of these enzymes may be affected in ATM-deficient patients and in cancer cells.
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