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An experimental study on the effect of hyperthermia and chemotherapy combined with quercetin on liver hepatocarcinoma HepG2 cells
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- Author:
- No author available
- Journal Title:
- CANCER RESEARCH AND CLINIC
- Issue:
- 2
- DOI:
- 10.3760/cma.j.issn.1006-9801.2006.02.003
- Key Word:
- 热休克;人肝癌HepG2细胞;槲皮素
Abstract： 目的研究热休克对人肝癌HepG2细胞耐药性的影响,探讨合用槲皮素(Qu)能否提高肝癌细胞热化疗的疗效.方法42℃恒温水浴法热休克传代人肝癌细胞系HepG2细胞90 min.MTT检测半数抑制浓度(IC50),求得耐药倍数、增敏倍数;荧光染色检测凋亡率;流式细胞术检测HSP70和P-gp表达率.结果Qu能诱导HepG2细胞凋亡.HepG2细胞热休克诱导后4 h对多柔比星ADM耐药性升高2.78倍(P＜0.05);HSP70阳性细胞数升高,4 h达到11.47%,升高近1倍(P＜0.01);P-gp阳性细胞数12 h达到96.31%,升高近2倍(P＜0.01);热休克前应用Qu能有效抑制热休克诱导HSP70和P-gp的过量表达,抑制细胞对ADM耐药性的产生,起增敏作用(P＜0.05),呈浓度依赖性.结论槲皮素可阻断热休克诱导HepG2细胞HSP70和P-gp的过表达,抑制耐药性的产生,起到热化疗的增敏作用,可成为肿瘤耐药逆转剂.
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