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Inhibitory effect of vitamin E succinate combined with chemotherapy drugs on pancreatic cancer cells in vitro
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF PANCREATOLOGY
- Issue:
- 2
- DOI:
- 10.3760/cma.j.issn.1674-1935.2005.02.003
- Key Word:
- 胰腺肿瘤;维生素E;琥珀酸;药物疗法,联合
Abstract： 目的检测维生素E琥珀酸酯(VES)联合化疗药物对胰腺癌细胞的体外抑制作用,并初步分析其机制.方法人胰腺癌细胞BxPc-3以VES联合化疗药物处理24 h,VES浓度为5 μg/ml、10 μg/ml和20 μg/ml.化疗药物的浓度分别为5-FU:100 μmol/L,130 μmol/L,260 μmol/L和400 μmol/L;丝裂霉素(MMC):0.5 μmol/L,1 μmol/L,3 μmol/L和10 μmol/L以及顺铂:5 μmol/L,10 μmol/L和20 μmol/L,以及不同VES浓度分别与不同浓度不同化疗药物联合应用.以MTT法测定对细胞增殖的抑制作用,以流式细胞仪分析细胞凋亡率和细胞表面Fas表达.结果 (1)单用不同浓度的VES和化疗药物均可显著抑制胰腺癌细胞的生长,并表现出剂量依赖关系(P＜ 0.05).二者合用时产生协同效应,抑制作用较单用相应浓度的药物显著增强,并且随相应药物浓度的增加而增强(P＜ 0.05).(2)BxPc-3细胞的自然凋亡率为0.4%,20 μg/ml VES作用24 h后凋亡率为21.0%,3种化疗药物最高浓度作用后的凋亡率分别为17.5%,12.4%和18.8%.VES与3种化疗药物最高浓度联合应用后的凋亡率分别为37.5%,30.6%和51.4%.(3)VES联合化疗药物作用后胰腺癌细胞表面Fas表达增强.结论 VES联合化疗药物对胰腺癌细胞具有显著的凋亡诱导作用,其机制可能与细胞表面Fas表达上调有关.
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