癌变·畸变·突变 ›› 1998, Vol. 10 ›› Issue (2): 69-071.doi: 10.3969/j.issn.1004-616x.1998.02.002

• 论著 • 上一篇    下一篇

γ射线诱发鼠骨髓干细胞染色体不稳定性传递及时相分析

刘炳辰 董连锴 金虎林 田中伟 穆传杰 周继文   

  1. 中国医学科学院 中国协和医科大学 放射医学研究所 天津 300192
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-03-30 发布日期:1998-03-30

THE CELL CYCLE PHASE ANALYSIS IN CHROMOSOMAL INSTABILITY TRANSMISSION INDUCED BY γ RAY IN MOUSE BONE MARROW STEM CELLS

Liu Bingchen , Dong Liankai , J in Hulin , Tian Zhongwei , Mu Chuanjie and Zhou J iwen   

  1. Instit ute of Radiation Medicine , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-03-30 Published:1998-03-30

摘要: 137Cs - γ射线可以诱发鼠骨髓干细胞染色体不稳定性的延迟表达。结果显示1) 鼠骨髓细胞经γ射线照射后,体外培养14d ,在其CFU - A 中仍有不稳定性染色体畸变出现。2)A4 细胞经γ射线照射后,其染色体不稳定性畸变的延迟表达可持续30d 以上,并有一定的剂量- 效应关系,多数时间点具有统计学意义。3)γ射线照射BALB/ C 小鼠,染色体不稳定性的体内传递可持续30d 以上,并在第30d 时出现染色体畸变频率的异常升高。染色体不稳定性延迟表达的结果,一方面可能使细胞死亡,另一方面可能使细胞的基因不稳定性遗传下来,并最终导致细胞的癌变。

关键词: 电离辐射, 染色体不稳定性

Abstract: The delayed expression of chromosomal instability could be induced by 137 Cs - γ ray in mouse marrow stem cells in vivo and in vit ro. The result s showed that 1) , After 14 days incubating of irradiated BALB/ C mouse marrow stem cells , the unstable chromosomal aberration still appeared in CFU - A. 2) , The appearance of the unstable chromosomal aberration could persist for above 30 days in irradiated A4 cells. The statistical analysis of dose2effect response was obversed. 3) , The chromosomal instabiliy could be t ransmitted in BALB/ C mice in vivo for up to 30 days.The f requencies for chromosomal aberrations on 30th day is higher than that of 5th、10th and 20th day. The effect s of chromosomal instability t ransmission is unkowns. It is possible that the delay of chromosomal instability expression lead to cells death and cells t ransformation.

Key words: radiation, chromosomal instablity