Epalrestat inhibits PDGF-induced proliferation of rat PASMCs by inhibiting aldose reductase expression
10.3867/j.issn.1000-3002.2018.02.002
- VernacularTitle:依帕司他通过抑制醛糖还原酶表达抑制血小板衍生生长因子诱导的大鼠肺动脉平滑肌细胞增殖
- Author:
Qian ZHANG
1
;
Ting-Ting YU
;
Li-Li JIANG
;
Dong-Ze ZUO
;
Xian-Wei LI
;
Zong-Yuan HONG
Author Information
1. 皖南医学院定量药理研究所药理学教研室
- Keywords:
epalrestat;
aldose reductase;
pulmonary artery smooth muscle cells;
proliferation
- From:
Chinese Journal of Pharmacology and Toxicology
2018;32(2):89-98
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To explore the inhibitory effects of epalrestat (EPS) on platelet-derived growth factor (PDGF)-induced rat pulmonary artery smooth muscle cells proliferation by inhibiting aldose reductase (AR) expression.METHODS Primary rat pulmonary arterial smooth muscle cells (PASMCs) were prepared from the pulmonary artery of male 10-week-old Sprague-Dawley rats using explant method.PDGF 30 mg·L-1was given to induce cell proliferation.After PASMCs grew to 70%-80% conflu?ence, AR small-interferring RNA(ARsiRNA) was transfected with Lipofectamine 3000 into PASMCs. After 24 h,the expression and activity of AR were detected by reverse transcription-quantitative polymerase chain reaction (RT-qPCR),Western blotting and spectrophotometric method,respectively to investigate EPS on PASMCs proliferation and proliferating cell nuclear antigen (PCNA) and collagenⅠexpression induced by PDGF from in vitro. PASMCs (normal control, PDGF 30 mg·L-1, PDGF+EPS 1, 10 and 100 μmol·L-1,EPS 100 μmol·L-1)were treated according to groups.Cell proliferation was measured by BrdU marking and flow cytometry. The expressions of AR, PCNA and collagenⅠwere analyzed with RT-qPCR and Western blotting.RESULTS In cultured PASMCs,compared with normal control group, the application of exogenous PDGF-induced cell proliferation concomitantly up-regulated AR expres?sion and activity (P<0.01), and such effect was abolished by ARsiRNA. Compared with PDGF group, EPS attenuated PDGF-induced proliferation of PASMCs,expression of PCNA,and collagenⅠ(P<0.05, P<0.01),and the inhibitory effect of EPS was accompanied by inhibition of AR expression(P<0.05,P<0.01).CONCLUSION EPS inhibits PDGF-induced proliferation of PASMCs via inhibiting AR expression.
