咪达唑仑对肝癌细胞增殖、凋亡与细胞周期的影响,肿瘤学论文.docx
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1、咪达唑仑对肝癌细胞增殖、凋亡与细胞周期的影响,肿瘤学论文摘 要: 目的 讨论静脉麻醉药咪达唑仑对人肝癌细胞增殖能力的影响。方式方法 首先通过CCK-8增殖实验观察递增浓度20、40、60、80和100 mol/L的咪达唑仑分别各自作用24、48和72 h后对人肝癌细胞的影响;通过流式细胞仪检测浓度为50 mol/L (Mida50组) 和100 mol/L (Mida100组) 的咪达唑仑以及PBS对照组 (Control组) 作用于人肝癌细胞发生的凋亡和细胞周期的变化;通过免疫印迹方式方法观察咪达唑仑对ERK通路的影响。结果 咪达唑仑浓度为20 mol/L递增至100 mol/L作用24 h
2、时, 人肝癌细胞株Huh7细胞增殖生存率由 (88.55 5.64) %下降至 (47.71 4.45) %, 差异有统计学意义 (P 0.05) , 且浓度为100 mol/L的咪达唑仑作用24、48和72 h的增殖生存率分别为 (47.71 4.45) %、 (25.69 6.52) %和 (18.10 2.95) %, 差异有统计学意义 (P 0.05) 。流式细胞实验显示Mida50和Mida100组的早期凋亡和晚期凋亡比率分别为 (7.07 0.41) %和 (8.36 0.48) %以及 (7.58 0.47) %和 (13.44 0.67) %。细胞周期示Control组、Mid
3、a50组、Mida100组S期比例分别为 (22.19 1.07) %、 (27.57 2.15) %和 (38.11 1.25) %。免疫印迹结果显示咪达唑仑作用于人肝癌细胞会使p-ERK下调。结论 咪达唑仑在体外细胞实验中能抑制人肝癌细胞株Huh7细胞的增殖并呈浓度相关和时间相关, 华而不实可能与咪达唑仑促进其凋亡和细胞周期S期停滞相关, 相关机制可能是通过ERK通路实现的。 本文关键词语: 咪达唑仑; 肝细胞癌; 增殖; 凋亡; Abstract: Objective To investigate the effects of Midazolam on the proliferation
4、 of human hepatocellular carcinoma (HCC) cells.Methods CCK8 proliferation assay was used to observe the anti-tumor effects of Midazolam on HCC cells.Midazolam treatment were given at different concentrations, including 20, 40, 60, 80 and 100 mol/L, and for 24 h, 48 h and 72 h.The cell apoptosis and
5、cell cycle of HCC were studied by flow cytometry.Western blotting was adopted to study the influence of Midazolam on ERK pathways.Results The cell viabilities of huh7 cells inhibited by Midazolam with concentrations of 20 mol/L and 100 mol/L were (88.55 5.64) % and (47.71 4.45) % in a concentration-
6、dependent manner, and they were (47.71 4.45) %, (25.69 6.52) % and (18.10 2.95) % inhibited by Midazolam of 100 mol/L for 24 h, 48 h and 72 h, respectively (P 0.05) .Midazolam induced apoptosis, and suppressed cell cycle progression of huh 7 cells.The percentages of early apoptosis cells in Group Mi
7、da50 and Mida100 were (7.07 0.41) % and (7.58 0.47) %, respectively;as the late apoptosis percentages were (8.36 0.48) % and (13.44 0.67) %, respectively.The accumulation rates of live cells in S phase in Group Control, Mida50 and Mida100 were (22.19 1.07) %, (27.57 2.15) % and (38.11 1.25) %, respe
8、ctively.Meanwhile, western blotting showed Midazolam induced down-regulation of p-ERK.Conclusion Midazolam is able to inhibit the proliferation of HCC cells, and to induce apoptosis and suppress cell cycle.ERK pathways may play a crucial role in this process. Keyword: midazolam; hepatocellular carci
9、noma cell; proliferation; apoptosis; 当前越来越多的研究提出麻醉能够影响手术患者, 十分是肿瘤手术患者远期预后这一观点。有研究报道外周血液里的肿瘤细胞数量在肿瘤患者的生存和预后起着重大的作用1。由此可见, 静脉麻醉药对肿瘤细胞的直接作用是特别重要的。咪达唑仑 (midazolam) 作为常用的静脉麻醉药, 由于它的起效快, 镇静效果显着等作用也被常用于肿瘤患者术前、麻醉诱导及围术期的镇静。近年来, 有研究发现咪达唑仑能抑制肿瘤细胞生长和促进凋亡2。肝细胞癌是全球回归性分析指出吸入麻醉药与静脉麻醉药相比, 术中使用吸入麻醉药维持麻醉的患者病死率更高层次4。静脉
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