实用肿瘤学杂志 ›› 2012, Vol. 26 ›› Issue (1): 37-41.doi: 10.3969/j.issn.1002-3070.2012.01.007

• 肺癌治疗·特邀专家论坛 • 上一篇    下一篇

Bcl-2基因表达抑制联合射线对NCI-H460细胞增殖状态及细胞周期影响的研究

徐向英1, 2, 许德权1, 陈蜜1, 赵芳宗1, 胡松柳1, 徐建宇1   

  1. 1.哈尔滨医科大学附属第三医院放疗科(哈尔滨 150081);
    2.哈尔滨医科大学肿瘤防治研究所
  • 收稿日期:2011-11-04 出版日期:2012-02-28 发布日期:2015-01-08
  • 通讯作者: 徐向英,E-mail:xuxxyy@sohu.com
  • 作者简介:徐向英 教授,博士生导师,黑龙江省肿瘤防治研究所副所长,省级重点学科肿瘤放射治疗学带头人,曾赴日本留学8年。任中华医学会放射肿瘤学分会常务委员,中国抗癌协会鼻咽癌专业委员会委员,中国老年肿瘤专业委员会委员,黑龙江省医学会及省抗癌协会放射治疗专业委员会主任委员、肺癌专业委员会副主任委员、《中华放射肿瘤学杂志》、《中华放射与防护杂志》及《实用肿瘤学杂志》等杂志编委等职。
       从事恶性肿瘤的放射治疗,擅长不同模式的肺癌放化综合治疗及肺癌放射敏感性研究。主持各类科研课题十余项。发表论文60余篇(SCI 6篇)。主编全国高等医药教材、卫生部"十一五"规划教材、全国高等学校教材《肿瘤放射治疗学》及配套教材。
  • 基金资助:
    哈尔滨医科大学附属第三医院科研基金(JJ2008-09);黑龙江省财政厅科研院所自拟课题(2009-07)

To Explore the Activity of Generation and the Cell Cycle of NCI-H460 by RNAi Inhibiting Bcl-2 Gene Expression and Combining Treatment with Radiation

XU Xiangying1,2,XU Dequan1,CHEN Mi1,ZHAO Fangzong1,HU Songliu1,XU Jianyu1.   

  1. 1.Department of radiotherapy,The Third Affiliated Hospital of Harbin Medical University,Harbin 150081;
    2.Harbin Medical University Institute of Cancer Prevention and Control,Harbin 150081
  • Received:2011-11-04 Online:2012-02-28 Published:2015-01-08

摘要: 目的 利用RNAi技术抑制Bcl-2基因的表达,联合放疗后观察其对非小细胞肺癌NCI-H460株细胞周期及细胞增殖状态的影响。方法 利用以pCYU6/GFP/Neo为载体的Bcl-2/shRNA重组质粒转染非小细胞肺癌NCI-H460细胞株,采用Western blot方法检测Bcl-2基因蛋白表达水平的变化,继而给予直线加速器6 Gy X线照射,采用MTT法和流式细胞术检测RNA干扰及照射后对NCI-H460细胞增殖和细胞周期的影响。结果 成功转染并经筛选获得阳性转染成功的细胞(HT),荧光显微镜下可见发绿色荧光的NCI-H460细胞,证明转染成功;Western blot检测显示Bcl-2蛋白表达水平显著降低;X线照射6 Gy,24 h及48 h后转染有义序列组细胞增殖情况较无义序列组及未转染组明显降低;流式细胞术显示转染有义序列细胞组经照射后24小时G2/M期分布比例增高,48小时后G2/M期分布比例显著减低。结论 RNAi技术可以有效的抑制非小细胞肺癌NCI-H460细胞Bcl-2基因表达,联合放疗后NCI-H460细胞的增殖率及细胞周期发生改变,起到一定的放射增敏作用。

关键词: 肺癌, Bcl-2基因, RNA干扰, 放射敏感性, 细胞周期

Abstract: Objective To explore the influence of Bcl-2 gene expression by RNAi on cell cycle and activity of cell and the radiosensitivity of Non-Small cell lung cancer cell line NCI-H460.Methods Making use of pCYU6/GFP/Neo on vectors containing shRNA targeting Bcl-2 gene were transfected into NCI-H460.Western blot were used to compare the efficiency of gene silencing.The transfected cell were exposed to 6Gy X-rays generated by a linear accelerator.MTT and Flow cytometry were used to explore the activity of generation and the cell cycle of NCI-H460.Results Bcl-2/shRNA was successfully transfected NCI-H460 cell lines.Western blot analysis that expression of Bcl-2 was suppressed by Bcl-2/shRNA;The activity of generation of cells transfected with Bcl-2/shRNA was lower than others at 6Gy irradiation,and higher percentage of G2/M phase was observed on cells transfected with Bcl-2/shRNA than others by cytometry.Conclusion RNAi could inhibit Bcl-2 gene expression and enhance the activity of generation and the cell cycle of NCI-H460 cells.

Key words: Lung carcinoma, Bcl-2 gene, RNA interference, Cytometry

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