摘要目的 评价芬太尼对人胃癌MGC-803细胞活力的影响.方法 人胃癌MGC-803细胞,接种于6孔或96孔培养板中,随机分为3组(n=60),正常对照组(C组)不作任何处理,低浓度芬太尼(F1组)和高浓度芬太尼组(F2组)芬太尼的终浓度分别为0.01、1.00 μmol/L,分别于芬太尼孵育12、24、36、48、60、72 h时测定细胞活力,于芬太尼孵育7 d时测定细胞增殖情况,于芬太尼孵育24 h时测定细胞周期和细胞凋亡情况,于芬太尼孵育24 h时采用透射电子显微镜观察细胞超微结构.结果 与C组比较,F1组和F2组细胞活力、克隆形成率和S期比例均降低,细胞凋亡率和G2/M期比例升高(P＜0.05);F1组与F2组比较上述指标差异无统计学意义(P＜0.05);C组细胞核膜完整、核仁及染色质清晰,F1组细胞核膜及核仁碎裂、染色质边集,F2组细胞核膜破裂、核仁碎裂,并出现凋亡小体.结论 芬太尼可抑制人胃癌细胞的活力,其机制与诱导促细胞凋亡作用有关.

abstractsObjective To investigate the effect of fentanyl on the viability of human gastric cancer cell line MGC-803. Methods The human gastric cancer cell line MGC-803 was purchased from Cell Biology Research Institute, Chinese Academy of Sciences, and cultured in DMEM liquid culture medium. The cells were seeded in 6-well or 96-well plates and divided into 3 groups (n = 60 wells each): group Ⅰ normal control (group C); group Ⅱ and Ⅲ were exposed to fentanyl 0.01 and 1.00 μmol/L respectively (group F1, F2). The viability of the cells was detected by MTT assay after being incubated with fentanyl for 12, 24, 36, 48, 60 and 72 h. The cell cycle progression and apoptosis were assessed by flow cytometry and the ulrastructure of the cells was examined with transmission electron microscope after being incubated with fentanyl for 24 h. The proliferation of the cells was determined by colony formation assay at 7 day of incubation with fentanyl. Results The viability and proliferation of the cells and the proportion of the cells in S phase were significantly lower, while the proportion of the cella in G2/M phase and the apoptotic rate were higher in group F1 and F2 than in group C but no significant difference was found between group F1 and F2. The nuclear evelope was intact, the nucleolus and chromosomes were clearly visible in group C, while in group F1 and F2 fregmentation of nuclear envelope and nucleolus, chromatin condensation and apoptotic bodies were observed in group F2. Conclusion Fentanyl can inhibit the viability of human gastric cancer cells by its pro-apoptosis inducing effect.