Androsterone在血管内皮细胞Eahy926中对SR-BI表达的影响

Effect of androsterone on scavenger receptor class B type I in human vascular endothelial cells

目的研究法尼酯X受体(farnesoid X receptor,FXR)对B类清道夫受体Ⅰ(scavenger receptor class BtypeI,SR-BI)表达的调控。方法FXR配体androsterone不同浓度处理Eahy926细胞,RT-PCR检测FXR特异靶基因小异源二聚体伴侣受体(small heterodimer partner,SHP)表达量的变化。RT-PCR和Real-timePCR分析经androsterone处理后Eahy926细胞中SR-BImRNA表达的变化。用Western blot检测SR-BI蛋白表达的变化。结果经androsterone刺激,Eahy926细胞中SHP的表达明显升高,表明FXR被活化。在经androsterone刺激的血管内皮细胞中,SR-BI在转录水平和翻译水平,表达均显著上升。结论FXR可在血管内皮细胞系Eahy926中上调SR-BI的表达水平。

Objective To investigate the effect of FXR on scavenger receptor class B type I(SR-BI) expression.Methods Human vascular endothelium Eahy926 cells were treated with FXR agonist androsterone,and the specific target gene of FXR SHP mRNA was detected by RT-PCR.SR-BI mRNA and protein were determined using RT-PCR,real-time PCR and Western blotting.Results The level of SHP mRNA in Eahy926 cells increased after androsterone treatment at different concentrations for 24 h,demonstrating FXR activation in the cells.RT...