Endoplasmic Reticulum-Mitochondrial Contactology: Structure and Signaling Functions.

Endoplasmic Reticulum-Mitochondrial Contactology: Structure and Signaling Functions.
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DOI:
10.1016/j.tcb.2018.02.009
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发表时间:
2018-07
影响因子:
19
通讯作者:
Hajnóczky G
Hajnóczky G
中科院分区:
生物学1区
文献类型:
--
作者:
Csordás G;Weaver D;Hajnóczky G

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细胞器间的接触越来越被认为是控制细胞行为的中心。这些接触通常只涉及一小部分内膜表面,是类似突触的局部通讯枢纽。我们提出“接触学”这个术语来表示细胞器间接触的分析。内质网(ER)与线粒体的联系早在几十年前就被认识到了;在离子和脂质转移、信号和膜动力学中的主要作用已经被确立,而其他的作用还在继续出现。内质网-线粒体接触的功能多样性反映在它们的结构异质性上,亚专门化可能由多个不同的连接物形成蛋白结构支持。触点的纳米尺寸使得研究它们的结构、功能和动力学变得困难。本文综述了内质网-线粒体接触的结构、研究方法及其在钙离子和活性氧信号转导中的作用。
Interorganellar contacts are increasingly recognized as central to the control of cellular behavior. These contacts, which typically involve a small fraction of the endomembrane surface, are local communication hubs that resemble synapses. We propose the term ‘contactology’ to denote the analysis of interorganellar contacts. Endoplasmic reticulum (ER) contacts with mitochondria were recognized decades ago; major roles in ion and lipid transfer, signaling and membrane dynamics have been established, while others continue to emerge. The functional diversity of ER-mitochondrial contacts is mirrored in their structural heterogeneity, with sub-specialization likely supported by multiple, different linker-forming protein structures. The nanoscale size of the contacts has made studying their structure, function and dynamics difficult. This review focuses on the structure of the ER-mitochondrial contacts, methods for studying them, and the contacts’ roles in Ca2+ and reactive oxygen species signaling.
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