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首页> 外文期刊>EMBO reports >Assurance of mitochondrial integrity and mammalian longevity by the p62-Keap1-Nrf2-Nqo1 cascade
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Assurance of mitochondrial integrity and mammalian longevity by the p62-Keap1-Nrf2-Nqo1 cascade

机译:通过p62-Keap1-Nrf2-Nqo1级联确保线粒体完整性和哺乳动物寿命

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摘要

Sqstm1/p62 functions in the non-canonical activation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2). However, its physiological relevance is not certain. Here, we show that p62 ~(-/-) mice exhibited an accelerated presentation of ageing phenotypes, and tissues from these mice created a pro-oxidative environment owing to compromised mitochondrial electron transport. Accordingly, mitochondrial function rapidly declined with age in p62 ~(-/-) mice. In addition, p62 enhanced basal Nrf2 activity, conferring a higher steady-state expression of NAD(P)H dehydrogenase, quinone 1 (Nqo1) to maintain mitochondrial membrane potential and, thereby, restrict excess oxidant generation. Together, the p62-Nrf2-Nqo1 cascade functions to assure mammalian longevity by stabilizing mitochondrial integrity.
机译:Sqstm1 / p62在核因子(类胡萝卜素衍生的2)样2(Nrf2)的非规范激活中起作用。然而,其生理学相关性尚不确定。在这里,我们显示p62〜(-/-)小鼠表现出衰老表型的加速表现,并且由于线粒体电子运输受到损害,这些小鼠的组织创造了一种促氧化环境。因此,p62〜(-/-)小鼠的线粒体功能随着年龄的增长而迅速下降。此外,p62增强了基础Nrf2活性,赋予NAD(P)H脱氢酶,醌1(Nqo1)更高的稳态表达,以维持线粒体膜电位,从而限制了过量氧化剂的产生。 p62-Nrf2-Nqo1级联在一起通过稳定线粒体的完整性来确保哺乳动物的寿命。

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