检验医学 ›› 2012, Vol. 27 ›› Issue (5): 371-373.

• 免疫学检验论著 • 上一篇    下一篇

曲古抑菌素A对鼻咽癌CNE2细胞凋亡的影响及机制研究

杨慧敏1,黄林2,覃蒙斌2,钟月圆2,刘晓春3,杨小丽2   

  1. 1.上海达安医学检测中心,上海 201203;2.广西医科大学医学科学实验中心,广西 南宁530021;3.广西壮族自治区人民医院,广西 南宁 530021
  • 收稿日期:2012-03-15 修回日期:2012-04-15 出版日期:2012-05-30 发布日期:2012-05-10
  • 通讯作者: 杨小丽,联系电话:0771-5358634。
  • 作者简介:杨慧敏,女,1972年生,硕士,主管技师,主要从事实验室相关诊断研究。

TSA induced cell cycle apoptosis in nasopharyngeal carcinoma CNE2 cells and its mechanisms

  1. 1. Shanghai Da′an Medical Centre for Clinical Laboratory, Shanghai 201203, China; 2. Medical Scientific Research Center,Guangxi Medical University, Guangxi Nanning 530021, China; 3. The People′s Hospital of Guangxi Zhuang Autonomous Region, Guangxi Nanning 530021, China
  • Received:2012-03-15 Revised:2012-04-15 Online:2012-05-30 Published:2012-05-10

摘要: 目的 探讨曲古抑菌素A(TSA)对鼻咽癌CNE2细胞凋亡的影响及作用机制。方法 以不同浓度(300、400、500 nmol/L)TSA作用鼻咽癌CNE2细胞株,采用流式细胞术测定TSA作用前后鼻咽癌细胞凋亡情况;逆转录聚合酶链反应(RT-PCR)分析TSA作用后鼻咽癌细胞中细胞周期素依赖性蛋白激酶抑制因子1A(P21)表达的变化。结果 以300、400、500 nmol/L TSA分别诱导CNE2细胞凋亡,作用24 h后凋亡率分别为12.52%±1.57%、19.69%±3.00%、19.63%±2.68%; 48 h后凋亡率为24.50%±4.45%、36.24%±3.92%、34.82%±6.45%;与对照组(0 nmol/L TSA)比较,差异均有统计学意义(P<0.05)。RT-PCR检测发现,TSA可诱导CNE2细胞内p21基因表达明显增加(P<0.01)。结论 TSA能明显诱导CNE2细胞凋亡,其作用机制可能与p21基因的异常表达有关。

关键词: 曲古抑菌素A, CNE2细胞系, 凋亡, p21基因

Abstract: Objective To investigate the influence of trichostatin A (TSA) on cell apoptosis in nasopharyngeal carcinoma CNE2 cells and its mechanism.   Methods CNE2 cells were incubated with TSA at different concentrations (300, 400 and 500 nmol/L). The effects of TSA on cell apoptosis were detected by flow cytometry. The expression of cyclin-dependent kinase inhibitor 1A (P21) was analyzed by reverse transcription-polymerase chain reaction (RT-PCR). Results The apoptosis rates with different concentrations of TSA (300, 400 and 500 nmol/L) were 12.52%±1.57%,19.69%±3.00% and 19.63%±2.68% after 24 h treatment. The apoptosis rates were 24.50%±4.45%,36.24%±3.92% and 34.82%±6.45% after 48 h treatment. There were statistical significance compared with those of controls (0 nmol/L TSA, P<0.05). The expression level of p21 increased after TSA treatment (P<0.01). Conclusions TSA markedly induces CNE2 cell apoptosis. Its mechanism would be related with the abnormal expression of p21 gene.

Key words: Trichostatin A, CNE2 cell line, Apoptosis, p21 gene