Circ_0023404 sponges miR‐136 to induce HK‐2 cells injury triggered by hypoxia/reoxygenation via up‐regulating IL‐6R. Issue 11 (4th May 2021)

• Record Type: Journal Article
• Authors: Xu, Yong; Li, Xiang; Li, Hailun; Zhong, Lili; Lin, Yongtao; Xie, Juan; Zheng, Donghui
• Is Part Of: Journal of cellular and molecular medicine. Volume 25:Issue 11(2021)
• Page Start: 4912
• Page End: 4921
• Publication Date: 2021-05-04
• Subjects: acute kidney injury -- Circ_0023404 -- Hypoxia/Reoxygenation -- IL‐6R -- miR‐136; Cytology; Medicine; Molecular Biology; Cytologie -- Périodiques; Médecine -- Périodiques; Biologie moléculaire -- Périodiques; Cytology -- Periodicals; Medicine -- Periodicals; Molecular biology -- Periodicals; 611.01805
• DOI: 10.1111/jcmm.15986
• Languages: English
• ISSNs: 1582-1838

Abstract

Abstract: The significance of circular RNAs (circRNAs) is reported in various kidney diseases including acute kidney injury (AKI). Specific circRNAs have the capacity to function as novel indicators of AKI. Circ_0023404 exhibits an important role in several diseases. Nevertheless, the detailed biological role of circ_0023404 in AKI remains poorly known. The present study aimed to investigate the effect of circ_0023404 on renal ischaemia/reperfusion (I/R) injury in vitro. Here, we evaluated the function of circ_0023404 in HK‐2 cells in response to hypoxia/reoxygenation (H/R). We established a cell AKI model induced by H/R in HK‐2 cells. We found circ_0023404 was significantly increased in AKI. Then, we found loss of circ_0023404 increased cell growth, repressed apoptosis, reduced inflammatory factors secretion and oxidative stress generation in vitro. Besides, circ_0023404 sponged miR‐136. miR‐136 overturned the effects of circ_0023404 on HK‐2 cell injury. We assumed IL‐6 receptor (IL‐6R) as a target of miR‐136 and IL‐6R was activated by circ_0023404 via sponging miR‐136. In conclusion, we revealed circ_0023404 contributed to HK‐2 cells injury stimulated by H/R via sponging miR‐136 and activating IL‐6R.