Life Cycle of the Cardiac Voltage-Gated Sodium Channel Na(V)1.5.

Life Cycle of the Cardiac Voltage-Gated Sodium Channel Na(V)1.5.
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心脏电压门控钠通道 NaV1.5 的生命周期

DOI:
10.3389/fphys.2020.609733
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发表时间:
2020
影响因子:
4
通讯作者:
Wang T
Wang T
中科院分区:
医学2区
文献类型:
--
作者:
Dong C;Wang Y;Ma A;Wang T

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由 SCN5A 编码的心脏电压门控钠通道 NaV1.5 对于动作电位的上升和心肌细胞的兴奋至关重要。 NaV1.5 在到达目标膜微区并发挥正常功能之前经历了复杂的过程。需要多种蛋白质伙伴来实现 SCN5A 转录和 mRNA 衰减、内质网保留和输出、高尔基体保留和输出、选择性锚定和降解、钠电流的激活和失活之间的平衡。细微的改变可能会损害 NaV1.5 的表达或功能,最终导致 NaV1.5 相关疾病,例如致命性心律失常和心肌病。
Cardiac voltage-gated sodium channel NaV1.5, encoded by SCN5A, is crucial for the upstroke of action potential and excitation of cardiomyocytes. NaV1.5 undergoes complex processes before it reaches the target membrane microdomains and performs normal functions. A variety of protein partners are needed to achieve the balance between SCN5A transcription and mRNA decay, endoplasmic reticulum retention and export, Golgi apparatus retention and export, selective anchoring and degradation, activation, and inactivation of sodium currents. Subtle alterations can impair NaV1.5 in terms of expression or function, eventually leading to NaV1.5-associated diseases such as lethal arrhythmias and cardiomyopathy.
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