PMID- 25406076 OWN - NLM STAT- MEDLINE DCOM- 20160104 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 11 DP - 2014 TI - Role of moesin in renal fibrosis. PG - e112936 LID - 10.1371/journal.pone.0112936 [doi] LID - e112936 AB - BACKGROUND: Renal fibrosis is the final common pathway of chronic kidney disease (CKD). Moesin is a member of Ezrin/Radixin/Moesin (ERM) protein family but its role in renal fibrosis is not clear. METHOD: Human proximal tubular cells (HK-2) were stimulated with or without TGF-beta1. Moesin and downstream target genes were examined by real-time PCR and western blot. Phosphorylation of moesin and related signaling pathway was investigated as well. Rat model of unilateral ureteral obstruction (UUO) was established and renal moesin was examined by immunohistochemistry. Moesin in HK-2 cells were knocked down by siRNA and change of downstream genes in transfected HK-2 cells was studied. All animal experiments were reviewed and approved by the Ethics Committee for animal care of Ruijin Hospital. RESULT: HK-2 cells stimulated with TGF-beta1 showed up-regulated level of alpha-SMA and down-regulated level of E-Cadherin as well as elevated mRNA and protein level of moesin. In rat model of UUO, renal moesin expression increased in accordance with severity of tubulointerestital fibrosis in the kidneys with ureteral ligation while the contralateral kidneys were normal. Further study showed that TGF-beta1 could induce phosphorylation of moesin which depended on Erk signaling pathway and Erk inhibitor PD98059 could block moesin phosphorylation. Effects of TGF-beta1 on moesin phosphorylation was prior to its activation to total moesin. RNA silencing studies showed that knocking down of moesin could attenuate decrease of E-Cadherin induced by TGF-beta1. CONCLUSION: We find that moesin might be involved in renal fibrosis and its effects could be related to interacting with E-Cadherin. FAU - Chen, Yong-Xi AU - Chen YX AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Zhang, Wen AU - Zhang W AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Wang, Wei-Ming AU - Wang WM AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Yu, Xia-Lian AU - Yu XL AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Wang, Yi-Mei AU - Wang YM AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Zhang, Min-Jun AU - Zhang MJ AD - Animal Experiment and Research Center, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. FAU - Chen, Nan AU - Chen N AD - Department of nephrology, Ruijin Hospital, Shanghai Jiaotong University, school of medicine, Shanghai, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141118 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (ACTA2 protein, human) RN - 0 (Actins) RN - 0 (Cadherins) RN - 0 (Microfilament Proteins) RN - 0 (RNA, Small Interfering) RN - 0 (Transforming Growth Factor beta1) RN - 144131-77-1 (moesin) SB - IM MH - Actins/metabolism MH - Analysis of Variance MH - Animals MH - Blotting, Western MH - Cadherins/*metabolism MH - Cell Line MH - Fibrosis/metabolism MH - Humans MH - Immunohistochemistry MH - Microfilament Proteins/*metabolism MH - Phosphorylation MH - RNA, Small Interfering/genetics MH - Rats MH - Real-Time Polymerase Chain Reaction MH - Renal Insufficiency, Chronic/*metabolism/*pathology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Signal Transduction/*physiology MH - Transforming Growth Factor beta1 PMC - PMC4236084 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2014/11/19 06:00 MHDA- 2016/01/05 06:00 PMCR- 2014/11/18 CRDT- 2014/11/19 06:00 PHST- 2014/06/01 00:00 [received] PHST- 2014/10/17 00:00 [accepted] PHST- 2014/11/19 06:00 [entrez] PHST- 2014/11/19 06:00 [pubmed] PHST- 2016/01/05 06:00 [medline] PHST- 2014/11/18 00:00 [pmc-release] AID - PONE-D-14-24417 [pii] AID - 10.1371/journal.pone.0112936 [doi] PST - epublish SO - PLoS One. 2014 Nov 18;9(11):e112936. doi: 10.1371/journal.pone.0112936. eCollection 2014.