实验动物与比较医学 ›› 2013, Vol. 33 ›› Issue (1): 60-63.DOI: 10.3969/j.issn.1674-5817.2013.01.013

• 论著 • 上一篇    下一篇

survivin mRNA在辐射诱发的胸腺细胞凋亡中的表达

屈景凯1, 王洪艳2, 齐亚莉2, 陈玉丙3, 宋祥福4, 龚守良4   

  1. 1.吉林省柳河县社区卫生服务管理办公室, 柳河 135300;
    2.北华大学公共卫生学院,长春 132001;
    3.吉林大学第二医院放疗科,长春130021;
    4.吉林大学公共卫生学院, 长春130021
  • 收稿日期:2012-09-27 出版日期:2013-02-25 发布日期:2013-02-25
  • 作者简介:屈景凯(1961-), 男, 主要从事职业卫生研究,E-mail: 1hxsqb@163.com
  • 基金资助:
    吉林省科技厅项目资助课题(20080446)

The Expression of Survivin mRNA on Thymus Tissue Apoptosis Induced Radiation

QU Jing -kai1, WANG Hong-yan2, QI Ya-li2, CHEN Yu-bing3, SONG Xiang-fu4, GONG Shou-liang4   

  1. 1. Health Bureau of Liuhe county, Liuhe 135300, China;
    2. School of Public Health Jilin Bei hua University, Changchun 1320001, China;
    3. The Second Hospital, Jilin University, Changchun 130021, China;
    4. Key Laboratory of Radiobiology, Ministry of Health, School of Public Health,Jilin University, Changchun 130021, China
  • Received:2012-09-27 Online:2013-02-25 Published:2013-02-25

摘要: 目的 观察survivin mRNA在辐射诱发的胸腺细胞凋亡中的表达,探讨survivin在放射性胸腺凋亡中的作用。方法 C57BL/ 6 小鼠行1.75 Gy X 线全身照射, 每周1 次, 连续4 周。在末次照射后30和60 d处死小鼠(每次6只),取出胸腺。流式细胞仪检测胸腺细胞周期和凋亡率。RT-PCR检测胸腺组织survivin mRNA表达水平。结果 受辐射后小鼠胸腺细胞的G0/G1和S期细胞的百分数在第30和60 d 检测时与正常组比较无明显差异(P >0.05),而G2/M 期细胞在30 d 时低于对照组,在60 d 明显高于对照组(P<0.05)。受辐射小鼠胸腺细胞的凋亡率在每一检测点均高于对照组(P<0.05),小鼠胸腺survivin mRNA表达明显低于对照组,差异显著(P<0.05)。结论 辐射可使胸腺组织发生凋亡,其作用机制可能与凋亡相关蛋白survivin mRNA表达降低有关。

关键词: 电离辐射, 胸腺, 凋亡, survivin

Abstract: Objective To observe the expression of survivin mRNA on thymus tissue apoptosis induced by ionizing radiation and study its role in radioactive thymus tissue apoptosis. Methods The mouse were irradiated with the X rays (1.75 Gy per time, 1 time per week for consecutive four times, total doses of 7 Gy).The mouse were killed and the thymus tissue were taken out at 30 and 60 d after they were irradiated(six mouse per time). The cell cycle and apoptosis rate were detected by flow cytometry. Survivin gene mRNA expression was detected by RT-PCR. Results The thymocytes and the of cells in G0/G1 and S phase in irradiation group were similar to that in control group, but the G2/M phase cells percentage was lower after irradiated 30 d and higher after 60 d compared with the control group (P<0.05).The thymocyte apoptosis in irradiation group was higher than that in control and the expression of survivin mRNA reduced significantly (P<0.05) at respectively time point. Conclusion Ionizing radiation can promote apoptosis in thymus by reducing survivin mRNA expressions.

Key words: Ionizing radiation, Thymus, Apoptosis, Survivin

中图分类号: