Failure to Guard: Mitochondrial Protein Quality Control in Cancer.

Failure to Guard: Mitochondrial Protein Quality Control in Cancer.
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DOI:
10.3390/ijms22158306
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发表时间:
2021-08-02
影响因子:
5.6
通讯作者:
Feng H
Feng H
中科院分区:
生物学2区
文献类型:
--
作者:
Friedlander JE;Shen N;Zeng A;Korm S;Feng H

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线粒体是一种充满活力的细胞器,在生物能量学、代谢和信号传导中起着至关重要的作用。由核和线粒体DNA编码的线粒体蛋白质必须被适当地调节以确保蛋白质稳态。线粒体蛋白质质量控制(MPQC)是一个重要的监测系统,采用不同的途径和调节剂作为细胞监护人,以确保线粒体蛋白质的质量和数量。在这篇综述中,我们描述了MPQC中的关键途径和参与者,如线粒体蛋白易位相关降解,线粒体应激反应,伴侣蛋白和蛋白酶,以及它们如何共同作用以保护线粒体的健康和完整性。MPQC失调导致蛋白质毒性和线粒体功能障碍,这导致许多人类疾病,包括癌症。我们讨论了MPQC组分的改变如何与肿瘤发生有关,它们是否作为驱动因子,抑制因子或两者兼而有之。最后,我们总结了最近的进展,旨在针对这些变化的抗癌药物的发展。
Mitochondria are energetic and dynamic organelles with a crucial role in bioenergetics, metabolism, and signaling. Mitochondrial proteins, encoded by both nuclear and mitochondrial DNA, must be properly regulated to ensure proteostasis. Mitochondrial protein quality control (MPQC) serves as a critical surveillance system, employing different pathways and regulators as cellular guardians to ensure mitochondrial protein quality and quantity. In this review, we describe key pathways and players in MPQC, such as mitochondrial protein translocation-associated degradation, mitochondrial stress responses, chaperones, and proteases, and how they work together to safeguard mitochondrial health and integrity. Deregulated MPQC leads to proteotoxicity and dysfunctional mitochondria, which contributes to numerous human diseases, including cancer. We discuss how alterations in MPQC components are linked to tumorigenesis, whether they act as drivers, suppressors, or both. Finally, we summarize recent advances that seek to target these alterations for the development of anti-cancer drugs.
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