Prostaglandin E2 receptor 1 antagonist attenuates mesangial cell lesion induced by TGF-β1 in mice through inhibiting ERK signal pathway
10.3760/cma.j.issn.1001-7097.2014.08.007
- VernacularTitle:前列腺素E2受体1亚型拮抗剂通过抑制ERK通路减轻转化生长因子β1诱导的小鼠系膜细胞损伤
- Author:
Zhi QIU
;
Xiaolan CHEN
;
Yuyin XU
;
Tianyi PAN
;
Wen MA
;
Yaping FAN
- Publication Type:Journal Article
- Keywords:
Receptors,prostaglandin E;
Transforming growth factor-beta 1;
Mesangial cells;
Antagonist;
Extracellular signal-regulated protein kinase 1/2
- From:
Chinese Journal of Nephrology
2014;30(8):598-603
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effects and mechanisms of prostaglandin E2 (PGE2) receptor 1 antagonist (SC-19220) on proliferation,prostaglandin synthase and extracellular regulated protein kinases (ERK) signal pathway induced by transforming growth factor β1(TGF-β1) in glomerular mesangial cells.Methods Mouse glomerular mesangial cells (GMCs) were divided into 5 groups:control group,TGF-β1 (10 μg/L) group,TGF-β1 (10 μg/L) plus SC-19220 group (0.1,0.5,1.0 μmol/L).The proliferation of GMCs was measured by CCK-8.The PGE2 in supernatant was measured by ELISA.The expression of connective tissue growth factor (CTGF),laminin (LN),cyclooxygenase 2(COX2),membrane-bound prostaglandin E2 synthase 1 (mPGES1) protein and mRNA was examined by Westem blotting and real-time quantitative PCR,ERK1/2 or phospho-ERK1/2 was measured by Western blotting as well.Results TGF-β1 induced the proliferation of GMCs and increased the secretion of PGE2.Besides,TGF-β1 significantly up-regulated the expression of CTGF,LN,COX2 and mPGES1 mRNA and protein (P ＜ 0.05),and increased the expression of phospho-ERK1/2 protein (P ＜ 0.05).However,SC-19220 significantly attenuated the changes of above-mentioned parameters and their activities (P ＜ 0.05).All the effects of SC-19220 were in dose-dependent manner.Conclusions SC19220 may reduce TGF-β1-induced cell damage by suppressing the activity of ERK1/2,and feedback inhibition of COX2,mPGES1 and PGE2,thus decreases the expression of LN and CTGF.
