PMID- 32092824 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210110 IS - 2162-2531 (Print) IS - 2162-2531 (Electronic) IS - 2162-2531 (Linking) VI - 19 DP - 2020 Mar 6 TI - Upregulation of miR-101a Suppresses Chronic Renal Fibrosis by Regulating KDM3A via Blockade of the YAP-TGF-beta-Smad Signaling Pathway. PG - 1276-1289 LID - S2162-2531(20)30036-6 [pii] LID - 10.1016/j.omtn.2020.01.002 [doi] AB - Renal fibrosis denotes a common complication of diabetic nephropathy and is a predominant cause of end-stage renal disease. Despite the association between microRNAs (miRNAs or miRs) and renal fibrosis, miRNAs have been reported to play a vital role in the development of chronic renal fibrosis. Therefore, the aim of the present study was to investigate the possible function of miR-101a in chronic renal fibrosis. Initially, microarray-based gene expression profiling of renal fibrosis was employed to screen the differentially expressed genes. An in vivo mouse model of chronic renal fibrosis induced by a unilateral ureteral obstruction (UUO) and an in vitro cell model induced by aristolochic acid (AA) were constructed. miR-101a expression was examined using a fluorescence in situ hybridization (FISH) assay and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Then, the interaction between miR-101a and KDM3A was identified using an online website combined with a dual-luciferase reporter assay. Finally, gain- and loss-of-function experiments were conducted to elucidate the effect of miR-101a on the expression of Col1a1, fibronectin, alpha-smooth muscle actin (alpha-SMA), and YAP-TGF-beta (transforming growth factor beta)-Smad signaling pathway-related genes, as well as the degree of renal fibrosis. miR-101a was poorly expressed while KDM3A was robustly induced in chronic renal fibrosis tissues and cells. In addition, miR-101a could target and downregulate KDM3A expression, which led to elevated TGIF1, inhibited expression of Collagen I (Col1a1), fibronectin, alpha-SMA, YAP1, and TGF-beta2 along with the extent of Smad2/3 phosphorylation, as well as delayed renal fibrosis degree. Besides, overexpressed YAP/TGF-beta2 or inhibited TGIF1 partially restored the inhibitory effect of miR-101a on chronic renal fibrosis. Taken together, miR-101a could potentially slow down chronic renal fibrosis by the inactivation of the YAP-TGF-beta-Smad signaling pathway via KDM3A, highlighting the potential of miR-101a as a therapeutic target for chronic renal fibrosis treatment. CI - Copyright (c) 2020 The Author(s). Published by Elsevier Inc. All rights reserved. FAU - Ding, Hong AU - Ding H AD - Department of Nephrology, The Forth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning Province, P.R. China. Electronic address: dinghong9209@126.com. FAU - Xu, Yanyan AU - Xu Y AD - Department of Nephrology, The Forth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning Province, P.R. China. FAU - Jiang, Nan AU - Jiang N AD - Department of Nephrology, The Forth Affiliated Hospital, China Medical University, Shenyang 110032, Liaoning Province, P.R. China. LA - eng PT - Journal Article DEP - 20200116 PL - United States TA - Mol Ther Nucleic Acids JT - Molecular therapy. Nucleic acids JID - 101581621 PMC - PMC7033461 OTO - NOTNLM OT - KDM3A OT - TGIF1 OT - YAP-TGF-beta-Smad signaling pathway OT - chronic renal fibrosis OT - enhancer OT - microRNA-101a EDAT- 2020/02/26 06:00 MHDA- 2020/02/26 06:01 PMCR- 2020/01/16 CRDT- 2020/02/26 06:00 PHST- 2019/09/24 00:00 [received] PHST- 2019/12/25 00:00 [revised] PHST- 2020/01/02 00:00 [accepted] PHST- 2020/02/26 06:00 [pubmed] PHST- 2020/02/26 06:01 [medline] PHST- 2020/02/26 06:00 [entrez] PHST- 2020/01/16 00:00 [pmc-release] AID - S2162-2531(20)30036-6 [pii] AID - 10.1016/j.omtn.2020.01.002 [doi] PST - ppublish SO - Mol Ther Nucleic Acids. 2020 Mar 6;19:1276-1289. doi: 10.1016/j.omtn.2020.01.002. Epub 2020 Jan 16.