The Physiological and Pathological Roles of Mitochondrial Calcium Uptake in Heart.

The Physiological and Pathological Roles of Mitochondrial Calcium Uptake in Heart.
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线粒体钙吸收心脏的生理和病理作用。

DOI:
10.3390/ijms21207689
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发表时间:
2020-10-17
影响因子:
5.6
通讯作者:
Qiu H
Qiu H
中科院分区:
生物学2区
文献类型:
--
作者:
Lai L;Qiu H

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钙离子(Ca~(2+))在心肌线粒体功能中起关键作用。钙离子进入线粒体是产生ATP和心肌细胞收缩活动所必需的。然而,线粒体中过多的钙离子会导致线粒体功能障碍和细胞死亡。线粒体通过一种全面的调控机制来维持正常心肌细胞内钙离子的动态平衡,线粒体通过控制钙离子的摄取和释放来响应细胞需求。了解心肌细胞线粒体Ca~(2+)稳态的调节机制可以为心脏病的发病机制提供新的认识,并有助于制定早期预防心脏损伤的策略。本文综述了心肌线粒体钙稳态的最新研究成果,重点介绍了线粒体钙摄取的调控,线粒体钙摄取是心脏功能中的一把双刃剑。具体而言,我们讨论了线粒体Ca~(2+)在线粒体活动中的双重作用及其对心脏功能的影响,其分子基础和调控机制,以及未来可能的研究兴趣。
Calcium ion (Ca2+) plays a critical role in the cardiac mitochondria function. Ca2+ entering the mitochondria is necessary for ATP production and the contractile activity of cardiomyocytes. However, excessive Ca2+ in the mitochondria results in mitochondrial dysfunction and cell death. Mitochondria maintain Ca2+ homeostasis in normal cardiomyocytes through a comprehensive regulatory mechanism by controlling the uptake and release of Ca2+ in response to the cellular demand. Understanding the mechanism of modulating mitochondrial Ca2+ homeostasis in the cardiomyocyte could bring new insights into the pathogenesis of cardiac disease and help developing the strategy to prevent the heart from damage at an early stage. In this review, we summarized the latest findings in the studies on the cardiac mitochondrial Ca2+ homeostasis, focusing on the regulation of mitochondrial calcium uptake, which acts as a double-edged sword in the cardiac function. Specifically, we discussed the dual roles of mitochondrial Ca2+ in mitochondrial activity and the impact on cardiac function, the molecular basis and regulatory mechanisms, and the potential future research interest.
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