TWIK-related acid-sensitive K+ channel 2 promotes renal fibrosis by inducing cell-cycle arrest

Jian Zhang, Jing Chen, Yufei Lu, Yan Yang, Weize Chen, Bo Shen, Jiachang Hu, Ping Jia, Sujuan Xu, Yiqin Shi, Yichun Ning, Jialin Wang, Yi Fang, Shuan Zhao, Yang Li, Yan Dai, Xiaoyan Zhang, Meng Xiang, Yang Tian, Zhichao LiuNana Song, Xiaoqiang Ding

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

TWIK-related acid-sensitive K+ channel-2 (TASK-2, encoded by Kcnk5) is essential in cell biological processes, by regulating transmembrane K+ balance. In the present study, we aimed to clarify the role of TASK-2 in renal fibrosis and explore the underlying mechanism. We found that TASK-2 level was elevated in the renal tubular UUO- and UIR-induced renal fibrosis as well as in patients with renal tubulointerstitial fibrosis. Knockout of Kcnk5 or inhibition of TASK-2 in renal tubules attenuated G2/M cell-cycle arrest and alleviated renal fibrosis. Mechanistically, demethylase fat mass and obesity-associated protein (FTO) reduced N6-adenosine methylation (m6A) of Kcnk5 mRNA following renal fibrosis. FTO deficiency attenuated the upregulation of TASK-2 and renal fibrosis. The results demonstrated the crucial role of TASK-2 in renal fibrosis, which is conducive to a better understanding of the pathogenesis of renal fibrosis. TASK-2 may be a potential treatment strategy to alleviate the development of renal fibrosis.

Original languageEnglish
Article number105620
JournaliScience
Volume25
Issue number12
DOIs
StatePublished - 22 Dec 2022

Keywords

  • Nephrology
  • cell biology
  • molecular biology

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