PMID- 31695460 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231013 IS - 1178-7007 (Print) IS - 1178-7007 (Electronic) IS - 1178-7007 (Linking) VI - 12 DP - 2019 TI - IL6R inhibits viability and apoptosis of pancreatic beta-cells in type 2 diabetes mellitus via regulation by miR-22 of the JAK/STAT signaling pathway. PG - 1645-1657 LID - 10.2147/DMSO.S211700 [doi] AB - BACKGROUND AND AIM: Type 2 diabetes mellitus (T2DM) is a common disease of harming to people's health. MicroRNAs have recently been considered as key regulators of many biological processes, such as cell proliferation, migration and apoptosis. However, the effect of miR-22 expression by targeting IL6 receptor (IL6R) in T2DM and potential molecular mechanism involved remains to be elucidated. The present study aimed to explore the regulatory mechanism of miR-22 by targeting IL6R in pancreatic beta-cells viability and apoptosis of T2DM. METHODS: The expressions of miR-22, IL6R and apolipoprotein (apoA1, apoB and apoE) were examined by reverse transcription-quantitative PCR (qRT-PCR). Pancreatic beta-cells were transiently transfected with a miR-22 mimic or si-IL6R plasmid which validated with qRT-PCR to analyze the expression of miR-22 or IL6R. Cell viability, apoptosis and protein expression levels were determined by CCK-8, flow cytometry and Western blotting, respectively. RESULTS: The proportion of INS-1E cell apoptosis was increased in islets of diabetic rats. Furthermore, miR-22 was downregulated and IL6R was upregulated in both diabetic serum and glucose-induced INS-1E cells. miR-22 overexpression or IL6R inhibition significantly strengthened cell viability and reduced the expression of apoptosis-related proteins to suppress cell apoptosis. IL6R was demonstrated as a target gene of miR-22 which could negatively regulate IL6R expression. Moreover, phosphorylation of JAK/STAT signaling pathway was activated by miR-22 overexpression or IL6R inhibition to strengthen the viability and suppress apoptosis of INS-1E cells. CONCLUSION: This study indicated that miR-22 strengthened the viability and suppressed apoptosis of INS-1E cells, partly by down-regulation of IL6R through the activation of JAK/STAT signaling pathway. CI - (c) 2019 Wu et al. FAU - Wu, Xinhua AU - Wu X AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Yu, Tao AU - Yu T AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Ji, Ning AU - Ji N AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Huang, Yujie AU - Huang Y AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Gao, Lingcheng AU - Gao L AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Shi, Wen AU - Shi W AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Yan, Yan AU - Yan Y AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Li, Hang AU - Li H AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Ma, Liming AU - Ma L AD - Department of Endocrinology, Huaian Hospital of Huaian District, Huaian, Jiangsu 223200, People's Republic of China. FAU - Wu, Kede AU - Wu K AD - Clinical Medicine, Medical College of Yangzhou University, Yangzhou, Jiangsu 225009, People's Republic of China. FAU - Wu, Zhen AU - Wu Z AD - Electric Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, People's Republic of China. LA - eng PT - Journal Article DEP - 20190829 PL - New Zealand TA - Diabetes Metab Syndr Obes JT - Diabetes, metabolic syndrome and obesity : targets and therapy JID - 101515585 PMC - PMC6718245 OTO - NOTNLM OT - IL6R OT - JAK/STAT signaling pathway OT - miR-22 OT - pancreatic beta-cells OT - type 2 diabetes mellitus COIS- The authors report no conflicts of interest in this work. EDAT- 2019/11/07 06:00 MHDA- 2019/11/07 06:01 PMCR- 2019/08/29 CRDT- 2019/11/08 06:00 PHST- 2019/04/09 00:00 [received] PHST- 2019/07/10 00:00 [accepted] PHST- 2019/11/08 06:00 [entrez] PHST- 2019/11/07 06:00 [pubmed] PHST- 2019/11/07 06:01 [medline] PHST- 2019/08/29 00:00 [pmc-release] AID - 211700 [pii] AID - 10.2147/DMSO.S211700 [doi] PST - epublish SO - Diabetes Metab Syndr Obes. 2019 Aug 29;12:1645-1657. doi: 10.2147/DMSO.S211700. eCollection 2019.