Involvement of Fas-dependent pathway in rhein-induced apoptosis of HK-2 cells
10.11665/j.issn.1000-5048.20150414
- VernacularTitle:Fas途径参与大黄酸诱导HK-2细胞凋亡
- Author:
Hao SUN
1
;
Jiapei YANG
;
Yong MAO
;
Dandan WANG
;
Feng YU
Author Information
1. 中国药科大学临床药学教研室，药物质量与安全预警教育部重点实验室
- Publication Type:Journal Article
- Keywords:
rhein;
HK-2 cell;
cytotoxicity;
Fas;
apoptosis
- From:
Journal of China Pharmaceutical University
2015;46(4):469-475
- CountryChina
- Language:Chinese
-
Abstract:
To investigate the effect and mechanism of cytotoxicity by rhein in human renal tubular epithelial HK-2 cells, HgCl2 was choosen as positive control. Cell viability was determined by MTT assay. LDH release assay was used to evaluate cell membrane damage. The activity of caspase-3, and -8 was measured by assay kit. Real-Time qPCR was employed to determine the mRNA expressions of Fas, FasL, FADD, caspase-3 and caspase-8. The protein expressions of Fas, FasL, cytoplasmic cytochrome C, caspase-3, caspase-8, caspase-9 were detected by Western blot. The results demonstrated that rhein inhibited cell viability and increased LDH release in a dose-dependent manner. The activity of caspase-3 and caspase-8 was significantly enhanced by rhein. The mRNA expression of Fas, FasL, FADD, caspase-3, caspase-8 was remarkably up-regulated by rhein. Rhein also elevated protein expressions of Fas, FasL, cytoplasmic cytochrome C, cleaved caspase-3, caspase-8 and reduced expressios of Pro caspase-8. There was no significant difference in caspase-9 expression. These results indicate that rhein has a cytotoxic effect and apoptosis-inducing effect in HK-2 cells. The Fas-dependent pathway is involved in rhein-induced apoptosis.
