PMID- 31637729 OWN - NLM STAT- MEDLINE DCOM- 20210308 LR - 20210308 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) VI - 235 IP - 5 DP - 2020 May TI - MKL1 mediates TGF-beta-induced CTGF transcription to promote renal fibrosis. PG - 4790-4803 LID - 10.1002/jcp.29356 [doi] AB - Aberrant fibrogenesis impairs the architectural and functional homeostasis of the kidneys. It also predicts poor diagnosis in patients with end-stage renal disease (ESRD). Renal tubular epithelial cells (RTEC) can trans-differentiate into myofibroblasts to produce extracellular matrix proteins and contribute to renal fibrosis. Connective tissue growth factor (CTGF) is a cytokine upregulated in RTECs during renal fibrosis. In the present study, we investigated the regulation of CTGF transcription by megakaryocytic leukemia 1 (MKL1). Genetic deletion or pharmaceutical inhibition of MKL1 in mice mitigated renal fibrosis following the unilateral ureteral obstruction procedure. Notably, MKL1 deficiency in mice downregulated CTGF expression in the kidneys. Likewise, MKL1 knockdown or inhibition in RTEs blunted TGF-beta induced CTGF expression. Further, it was discovered that MKL1 bound directly to the CTGF promoter by interacting with SMAD3 to activate CTGF transcription. In addition, MKL1 mediated the interplay between p300 and WDR5 to regulate CTGF transcription. CTGF knockdown dampened TGF-beta induced pro-fibrogenic response in RTEs. MKL1 activity was reciprocally regulated by CTGF. In conclusion, we propose that targeting the MKL1-CTGF axis may generate novel therapeutic solutions against aberrant renal fibrogenesis. CI - (c) 2019 Wiley Periodicals, Inc. FAU - Mao, Lei AU - Mao L AD - Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Nanjing Medical University, Nanjing, China. FAU - Liu, Li AU - Liu L AD - Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Nanjing Medical University, Nanjing, China. FAU - Zhang, Tianyi AU - Zhang T AD - Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Nanjing Medical University, Nanjing, China. FAU - Wu, Xiaoyan AU - Wu X AD - Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Nanjing Medical University, Nanjing, China. AD - The Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing, China. FAU - Zhang, Tao AU - Zhang T AD - Department of Geriatric Nephrology, Jiangsu Province Hospital, First Affiliated Hospital of Nanjing Medical University, Nanjing, China. FAU - Xu, Yong AU - Xu Y AUID- ORCID: 0000-0003-1470-9371 AD - Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Nanjing Medical University, Nanjing, China. AD - Institute of Biomedical Research, Liaocheng University, Liaocheng, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191021 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (CCN2 protein, mouse) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Mrtfa protein, mouse) RN - 0 (Smad3 Protein) RN - 0 (Smad3 protein, mouse) RN - 0 (Trans-Activators) RN - 0 (Transforming Growth Factor beta) RN - 0 (Wdr5 protein, mouse) RN - 139568-91-5 (Connective Tissue Growth Factor) RN - EC 2.3.1.48 (E1A-Associated p300 Protein) RN - EC 2.3.1.48 (Ep300 protein, mouse) SB - IM MH - Animals MH - Binding Sites MH - Cell Line MH - Connective Tissue Growth Factor/genetics/*metabolism MH - Disease Models, Animal MH - E1A-Associated p300 Protein/metabolism MH - Epigenesis, Genetic MH - Fibrosis MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Kidney/*drug effects/enzymology/pathology MH - Kidney Diseases/*enzymology/etiology/genetics/pathology MH - Male MH - Mice, Knockout MH - Promoter Regions, Genetic MH - Rats MH - Signal Transduction MH - Smad3 Protein/metabolism MH - Trans-Activators/deficiency/genetics/*metabolism MH - Transcription, Genetic/*drug effects MH - Transforming Growth Factor beta/*pharmacology MH - Ureteral Obstruction/complications OTO - NOTNLM OT - epigenetics OT - renal fibrosis OT - transcription factor OT - transcriptional regulation EDAT- 2019/10/23 06:00 MHDA- 2021/03/09 06:00 CRDT- 2019/10/23 06:00 PHST- 2019/04/04 00:00 [received] PHST- 2019/09/30 00:00 [accepted] PHST- 2019/10/23 06:00 [pubmed] PHST- 2021/03/09 06:00 [medline] PHST- 2019/10/23 06:00 [entrez] AID - 10.1002/jcp.29356 [doi] PST - ppublish SO - J Cell Physiol. 2020 May;235(5):4790-4803. doi: 10.1002/jcp.29356. Epub 2019 Oct 21.