Mitochondrial cholesterol: a connection between caveolin, metabolism, and disease.

Mitochondrial cholesterol: a connection between caveolin, metabolism, and disease.
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DOI:
10.1111/j.1600-0854.2011.01259.x
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发表时间:
2011-11
期刊:
Traffic (Copenhagen, Denmark)
影响因子:
--
通讯作者:
Pol A
Pol A
中科院分区:
其他
文献类型:
--
作者:
Bosch M;Marí M;Gross SP;Fernández-Checa JC;Pol A

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小窝蛋白 (CAV) 是小窝的重要组成部分,小窝是大多数哺乳动物细胞质膜上富含胆固醇的内陷。然而,CAV 并不局限于质膜小窝,CAV 池存在于无数的细胞内膜中。 CAV 蛋白与胆固醇紧密结合,有助于调节细胞内的胆固醇流动和分布。在此背景下,我们最近证明了 CAV1 调节了人们知之甚少的控制线粒体胆固醇水平的过程。在 CAV1 缺失的情况下,胆固醇会在线粒体膜中积聚,促进细胞器功能障碍,对细胞和动物产生重要的代谢后果。在这篇交换文章中,我们提出了一个工作假设,该假设解决了 CAV1 在调节线粒体胆固醇流入/流出的稳态网络中的作用。
Caveolin (CAV) is an essential component of caveolae, cholesterol-enriched invaginations of the plasma membrane of most mammalian cells. However, CAV is not restricted to plasma membrane caveolae, and pools of CAV are present in myriad intracellular membranes. CAV proteins tightly bind cholesterol and contribute to regulation of cholesterol fluxes and distributions within cells. In this context, we recently demonstrated that CAV1 regulates the poorly-understood process controlling mitochondria cholesterol levels. Cholesterol accumulates in mitochondrial membranes in the absence of CAV1, promoting the organelle’s dysfunction with important metabolic consequences for cells and animals. In this Interchange Article we suggest a working hypothesis that addresses the role of CAV1 within the homeostatic network that regulates the influx/efflux of mitochondrial cholesterol.
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