汗水
水通道蛋白
水道
水通道蛋白1
化学
染色体易位
水通道蛋白2
细胞生物学
内分泌学
内科学
生物
生物化学
医学
基因
地质学
海洋学
入口
作者
Risako Inoue,Eisei Sohara,Tatemitsu Rai,Takahiro Satoh,Hiroo Yokozeki,Sei Sasaki,Shinichi Uchida
标识
DOI:10.1016/j.jdermsci.2013.01.013
摘要
Abstract
Background
Aquaporin-5 (AQP5) is a member of the water channel protein family. Although AQP5 was shown to be present in sweat glands, the presence or absence of regulated intracellular translocation of AQP5 in sweat glands remained to be determined. Objective
We investigated whether AQP5 in sweat glands translocated during sweating, and also sought to determine the intracellular signal that triggers this translocation. Methods
Immunofluorescent analyses of AQP5 in mouse and human sweat glands were performed. Madin-Darby Canine kidney (MDCK) cell lines stably expressing human AQP5 were generated, and the regulated translocation of AQP5 in the polarized cells was assessed by immunofluorescent analysis and biotinylation assays. Results
AQP5 showed rapid translocation to the apical membranes during sweating. In human eccrine sweat glands, immunoreactive AQP5 was detected in the apical membranes and the intercellular canaliculi of secretory coils, and in the basolateral membranes of the clear cells. Treatment of human AQP5-expressing MDCK cells with calcium ionophore A23187 resulted in a twofold increase of AQP5 in the apical membranes within 5min. Conclusion
The regulated AQP5 translocation may contribute to sweat secretion by increasing the water permeability of apical plasma membranes of sweat glands.
科研通智能强力驱动
Strongly Powered by AbleSci AI