中国神经再生研究(英文版) ›› 2024, Vol. 19 ›› Issue (12): 2684-2697.doi: 10.4103/NRR.NRR-D-23-01175

• 综述:脑损伤修复保护与再生 • 上一篇    下一篇

Na+/K+-ATP酶:离子泵、信号传导蛋白或细胞保护蛋白及更多的生物学功能

  

  • 出版日期:2024-12-15 发布日期:2024-03-30

Na+/K+-ATPase: ion pump, signal transducer, or cytoprotective protein, and novel biological functions

Songqiang Huang1, Wanting Dong2, Xiaoqian Lin1, Jinsong Bian1, *   

  1. 1Department of Pharmacology, Joint Laboratory of Guangdong-Hong Kong Universities for Vascular Homeostasis and Diseases, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong Province, China; 2Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
  • Online:2024-12-15 Published:2024-03-30
  • Contact: Jinsong Bian, PhD, bianjs@sustech.edu.cn.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, No. 82173800 (to JB) and Shenzhen Science and Technology Program, No. KQTD20200820113040070 (to JB).

摘要:

Na+/K+-ATP酶是一种钠钾泵,通过将三个Na+转运出细胞和两个K+转运进细胞中,在维持细胞膜上的电化学梯度方面发挥重要作用。Na+/K+-ATP酶还通过协调细胞膜上的离子浓度梯度参与Ca2+信号转导和神经递质释放。此外,Na+/K+-ATP酶与细胞膜上的多个离子通道协同作用,形成离子稳态调控的动态网络,并通过调节不同类型细胞之间的化学信号和离子平衡来影响细胞通讯。然而,现有的研究只阐明Na+/K+-ATP酶功能障碍在疾病发展中的重要作用,缺乏详细的机制来阐明Na+/K+-ATP酶如何影响细胞功能。文章提出Na+/K+-ATP酶的膜缺失涉及许多神经系统疾病的关键机制,特别是在脑卒中和帕金森病中。用抗体疗法来稳定细胞膜的Na+/K+-ATP酶是治疗这些疾病的新策略。因此,Na+/K+-ATP酶不仅是一个简单的离子泵,更是一种信号传导蛋白或细胞保护蛋白。然后,文章总结了中枢神经系统中Na+/K+-ATP酶新的生物学功能及NKA相关的发病机制。探讨了以Na+/K+-ATP酶为靶标治疗相关脑部疾病的新策略并希望未来可以开发出更多、更有效的方法来治疗神经系统疾病。

https://orcid.org/0000-0001-8000-3356 (Jinsong Bian)

Abstract: Na+/K+-ATPase is a transmembrane protein that has important roles in the maintenance of electrochemical gradients across cell membranes by transporting three Na+ out of and two K+ into cells. Additionally, Na+/K+-ATPase participates in Ca2+-signaling transduction and neurotransmitter release by coordinating the ion concentration gradient across the cell membrane. Na+/K+-ATPase works synergistically with multiple ion channels in the cell membrane to form a dynamic network of ion homeostatic regulation and affects cellular communication by regulating chemical signals and the ion balance among different types of cells. Therefore, it is not surprising that Na+/K+-ATPase dysfunction has emerged as a risk factor for a variety of neurological diseases. However, published studies have so far only elucidated the important roles of Na+/K+-ATPase dysfunction in disease development, and we are lacking detailed mechanisms to clarify how Na+/K+-ATPase affects cell function. Our recent studies revealed that membrane loss of Na+/K+-ATPase is a key mechanism in many neurological disorders, particularly stroke and Parkinson’s disease. Stabilization of plasma membrane Na+/K+-ATPase with an antibody is a novel strategy to treat these diseases. For this reason, Na+/K+-ATPase acts not only as a simple ion pump but also as a sensor/regulator or cytoprotective protein, participating in signal transduction such as neuronal autophagy and apoptosis, and glial cell migration. Thus, the present review attempts to summarize the novel biological functions of Na+/K+-ATPase and Na+/K+-ATPase-related pathogenesis. The potential for novel strategies to treat Na+/K+-ATPase-related brain diseases will also be discussed. 

Key words: antibody, biological functions, cellular communication, electrochemical gradient, ion balance, ion channels, Na+/K+-ATPase, neurological diseases, neurotransmitter release, signal transduction