PMID- 30953355 OWN - NLM STAT- MEDLINE DCOM- 20200603 LR - 20200603 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) VI - 234 IP - 11 DP - 2019 Nov TI - A novel mechanism of Smads/miR-675/TGFbetaR1 axis modulating the proliferation and remodeling of mouse cardiac fibroblasts. PG - 20275-20285 LID - 10.1002/jcp.28628 [doi] AB - Cardiac fibroblasts (CFs) can over-proliferate during the progression of cardiac fibrosis, accompanied by a net accumulation of extracellular matrix proteins. Based on the profibrotic actions of transforming growth factor beta 1 (TGFbeta1), investigating the mechanisms of TGFbeta1 function in CFs may provide new directions to treatment for cardiac fibrosis. microRNAs (miRNAs) could control CFs proliferation or remodeling via binding to 3'-untranslated region of messenger RNA (mRNA) to negatively regulate gene expression. In the present study, we downloaded several microarray analyses results from GEO attempting to identify miRNAs and possible downstream targets that may be involved in TGF-beta1 function in CFs and to detect the cellular and molecular functions of the identified miRNA-mRNA axis. Here, we identified miR-675 as a downregulated miRNA by TGFbeta1 by bioinformatics analyses and experimental verification. Upon TGFbeta1 stimulation, the protein levels of Alpha-SMAAlpha-SMA, collagen I, and POSTN, and the secreted collagen in the cell culture supernatant significantly increased, whereas the miR-675 expression decreased. Smads mediate TGFbeta1-induced suppression on miR-675 via binding miR-675 promoter region. miR-675 overexpression could inhibit, whereas miR-675 inhibition could enhance TGFbeta1-induced mouse CFs (MCF) remodeling and proliferation. TGFbeta receptor 1 (TGFbetaR1), a critical receptor in TGFbeta1/Smad signaling, is a direct downstream target of miR-675. TGFbetaR1 overexpression significantly reverses the effect of miR-675 overexpression on MCF remodeling and proliferation. In summary, miR-675 targets TGFbetaR1 to attenuate TGFbeta1-induced MCF remodeling and proliferation. We demonstrate a novel mechanism of the Smads/miR-675/TGFbetaR1 axis modulating TGFbeta1-induced MCF remodeling and proliferation. CI - (c) 2019 Wiley Periodicals, Inc. FAU - Wang, Lei AU - Wang L AD - Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan, China. FAU - Jiang, Ping AU - Jiang P AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - He, Yi AU - He Y AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - Hu, Hongyu AU - Hu H AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - Guo, Yuan AU - Guo Y AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - Liu, Xiangyang AU - Liu X AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - Qiu, Haihua AU - Qiu H AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. FAU - Ma, Qilin AU - Ma Q AD - Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan, China. FAU - Ouyang, Fan AU - Ouyang F AUID- ORCID: 0000-0002-9922-3241 AD - Department of Cardiology, Zhuzhou Central Hospital, the Affiliated Zhuzhou Hospital of Xiangya Medical College of Central South University, Zhuzhou, Hunan, China. LA - eng PT - Journal Article DEP - 20190405 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 RN - 0 (MIRN675 microRNA, mouse) RN - 0 (MicroRNAs) RN - 0 (RNA, Messenger) RN - 0 (Smad Proteins) RN - 0 (Tgfb1 protein, mouse) RN - 0 (Transforming Growth Factor beta1) SB - IM MH - Animals MH - Cell Proliferation/physiology MH - Cells, Cultured MH - Fibroblasts/*metabolism MH - Mice, Inbred C57BL MH - MicroRNAs/*genetics MH - Myocardium/*metabolism MH - RNA, Messenger/metabolism MH - Signal Transduction/physiology MH - Smad Proteins/*metabolism MH - Transforming Growth Factor beta1/*metabolism OTO - NOTNLM OT - Smads OT - TGFbetaR1 OT - cardiac fibroblasts OT - miR-675 OT - proliferation OT - remodeling EDAT- 2019/04/07 06:00 MHDA- 2020/06/04 06:00 CRDT- 2019/04/07 06:00 PHST- 2018/11/23 00:00 [received] PHST- 2019/03/15 00:00 [revised] PHST- 2019/03/19 00:00 [accepted] PHST- 2019/04/07 06:00 [pubmed] PHST- 2020/06/04 06:00 [medline] PHST- 2019/04/07 06:00 [entrez] AID - 10.1002/jcp.28628 [doi] PST - ppublish SO - J Cell Physiol. 2019 Nov;234(11):20275-20285. doi: 10.1002/jcp.28628. Epub 2019 Apr 5.