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新陈代谢中的机械传感

Mechanosensing in Metabolism.

作者信息

Tranter John D, Kumar Ashutosh, Nair Vinayak K, Sah Rajan

机构信息

Department of Internal Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA.

Center for Cardiovascular Research, Washington University, St. Louis, Missouri, USA.

出版信息

Compr Physiol. 2023 Dec 29;14(1):5269-5290. doi: 10.1002/cphy.c230005.

Abstract

Electrical mechanosensing is a process mediated by specialized ion channels, gated directly or indirectly by mechanical forces, which allows cells to detect and subsequently respond to mechanical stimuli. The activation of mechanosensitive (MS) ion channels, intrinsically gated by mechanical forces, or mechanoresponsive (MR) ion channels, indirectly gated by mechanical forces, results in electrical signaling across lipid bilayers, such as the plasma membrane. While the functions of mechanically gated channels within a sensory context (e.g., proprioception and touch) are well described, there is emerging data demonstrating functions beyond touch and proprioception, including mechanoregulation of intracellular signaling and cellular/systemic metabolism. Both MR and MS ion channel signaling have been shown to contribute to the regulation of metabolic dysfunction, including obesity, insulin resistance, impaired insulin secretion, and inflammation. This review summarizes our current understanding of the contributions of several MS/MR ion channels in cell types implicated in metabolic dysfunction, namely, adipocytes, pancreatic β-cells, hepatocytes, and skeletal muscle cells, and discusses MS/MR ion channels as possible therapeutic targets. © 2024 American Physiological Society. Compr Physiol 14:5269-5290, 2024.

摘要

电机械传感是一个由特殊离子通道介导的过程,这些通道由机械力直接或间接门控,使细胞能够检测并随后对机械刺激做出反应。机械敏感(MS)离子通道(由机械力内在门控)或机械反应(MR)离子通道(由机械力间接门控)的激活会导致跨脂质双层(如质膜)的电信号传导。虽然机械门控通道在感觉环境(如本体感觉和触觉)中的功能已得到充分描述,但新出现的数据表明其功能超出了触觉和本体感觉,包括细胞内信号传导和细胞/全身代谢的机械调节。MR和MS离子通道信号传导均已被证明有助于调节代谢功能障碍,包括肥胖、胰岛素抵抗、胰岛素分泌受损和炎症。本综述总结了我们目前对几种MS/MR离子通道在与代谢功能障碍相关的细胞类型(即脂肪细胞、胰腺β细胞、肝细胞和骨骼肌细胞)中的作用的理解,并讨论了MS/MR离子通道作为可能的治疗靶点。©2024美国生理学会。综合生理学14:5269 - 5290,2024。

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