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线粒体-溶酶体膜接触位点在细胞稳态中的调节和功能。

Regulation and Function of Mitochondria-Lysosome Membrane Contact Sites in Cellular Homeostasis.

机构信息

Ken and Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.

Ken and Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.

出版信息

Trends Cell Biol. 2019 Jun;29(6):500-513. doi: 10.1016/j.tcb.2019.02.004. Epub 2019 Mar 18.

Abstract

Mitochondrial and lysosomal function are intricately related and critical for maintaining cellular homeostasis, as highlighted by multiple diseases linked to dysfunction of both organelles. Recent work using high-resolution microscopy demonstrates the dynamic formation of inter-organelle membrane contact sites between mitochondria and lysosomes, allowing for their direct interaction in a pathway distinct from mitophagy or lysosomal degradation of mitochondrial-derived vesicles. Mitochondria-lysosome contact site tethering is mechanistically regulated by mitochondrial proteins promoting Rab7 GTP hydrolysis, and allows for the bidirectional crosstalk between mitochondria and lysosomes and the regulation of their organelle network dynamics, including mitochondrial fission. In this review, we summarize recent advances in mitochondria-lysosome contact site regulation and function, and discuss their potential roles in cellular homeostasis and various human diseases.

摘要

线粒体和溶酶体的功能密切相关,对于维持细胞内稳态至关重要,这一点在与这两个细胞器功能障碍相关的多种疾病中得到了强调。最近使用高分辨率显微镜的研究表明,线粒体和溶酶体之间会形成细胞器间膜接触位点,从而允许它们在不同于自噬或溶酶体降解线粒体衍生小泡的途径中进行直接相互作用。线粒体-溶酶体接触点的连接通过促进 Rab7 GTP 水解的线粒体蛋白在机制上受到调节,并允许线粒体和溶酶体之间进行双向串扰,以及调节它们的细胞器网络动态,包括线粒体裂变。在这篇综述中,我们总结了线粒体-溶酶体接触点调节和功能的最新进展,并讨论了它们在细胞内稳态和各种人类疾病中的潜在作用。

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