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Fas途径参与大黄酸诱导HK-2细胞凋亡

孙浩, 杨加培, 毛勇, 王丹丹, 于锋

孙浩, 杨加培, 毛勇, 王丹丹, 于锋. Fas途径参与大黄酸诱导HK-2细胞凋亡[J]. 中国药科大学学报, 2015, 46(4): 469-475. DOI: 10.11665/j.issn.1000-5048.20150414
引用本文: 孙浩, 杨加培, 毛勇, 王丹丹, 于锋. Fas途径参与大黄酸诱导HK-2细胞凋亡[J]. 中国药科大学学报, 2015, 46(4): 469-475. DOI: 10.11665/j.issn.1000-5048.20150414
SUN Hao, YANG Jiapei, MAO Yong, WANG Dandan, YU Feng. Involvement of Fas-dependent pathway in rhein-induced apoptosis of HK-2 cells[J]. Journal of China Pharmaceutical University, 2015, 46(4): 469-475. DOI: 10.11665/j.issn.1000-5048.20150414
Citation: SUN Hao, YANG Jiapei, MAO Yong, WANG Dandan, YU Feng. Involvement of Fas-dependent pathway in rhein-induced apoptosis of HK-2 cells[J]. Journal of China Pharmaceutical University, 2015, 46(4): 469-475. DOI: 10.11665/j.issn.1000-5048.20150414

Fas途径参与大黄酸诱导HK-2细胞凋亡

Involvement of Fas-dependent pathway in rhein-induced apoptosis of HK-2 cells

  • 摘要: 探讨大黄酸对人肾小管上皮细胞系HK-2的毒性作用及毒性作用机制。以HgCl2为阳性对照,通过MTT法检测细胞活力,LDH释放实验检测细胞毒性,Annexin Ⅴ-FITC/PI双染法检测细胞凋亡率,Real-Time qPCR检测Fas,FasL,FADD,caspase-3,caspase-8的mRNA表达,Western blot检测Fas,FasL,胞浆Cyt-c,caspase-3,caspase-8,caspase-9蛋白表达。实验结果显示:大黄酸可剂量依赖性地抑制HK-2细胞活力,增加LDH释放和细胞凋亡率,使Fas,FasL,FADD,caspase-3,caspase-8的mRNA表达显著性上调,Fas,FasL,胞浆Cyt-c蛋白表达量显著升高,caspase-8原型表达显著降低,caspase-3,caspase-8裂解片段表达显著增加,caspae-9表达无变化。结果证明:大黄酸体外对HK-2细胞具有毒性作用,其毒性作用机制可能是通过Fas途径诱导HK-2细胞凋亡。
    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.
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  • 刊出日期:  2015-08-24

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