Repair of chromosome and DNA breaks versus cell survival in Chinese hamster cells.

Repair of chromosome and DNA breaks versus cell survival in Chinese hamster cells.
复制标题

中国仓鼠细胞中染色体和 DNA 断裂修复与细胞存活的关系。

DOI:
10.1080/095530096145292
复制
发表时间:
1996
影响因子:
2.6
通讯作者:
Brock,WA
Brock,WA
中科院分区:
医学3区
文献类型:
--
作者:
Bussink,J;Tofilon,PJ;Brock,WA

文献摘要

参考文献

被引文献

相似文献

在受辐射的中国仓鼠细胞中比较细胞存活的克隆形成和非克隆形成参数。在细胞周期不同部分的同步化细胞中评估克隆形成存活、染色单体断裂和修复动力学以及 DNA 损伤和修复。在S和G 2 期期间受辐射、用或不用DNA修复抑制剂处理的细胞的中期染色体中检查G 2 染色单体损伤和修复。从照射时开始对 S 期细胞进行溴脱氧尿苷标记,可以在对中期染色体进行评分时精确确定细胞是否在周期的中期 S、晚期 S 或 G 2 期接受照射。结果表明,S期诱导的染色单体断裂得到有效修复,直到细胞进入G 2 时,修复突然停止。 G 2 期染色单体损伤无法修复。另一方面,DNA 双链断裂在周期的所有阶段都会被修复,甚至在没有同时染色单体断裂修复的 G 2 期也是如此。最后,染色单体损伤和修复、DNA 损伤和修复以及细胞存活之间没有一致的相关性,因此表明必须更好地理解不同放射敏感性参数的相互作用,才能将它们作为细胞存活的有用预测因子。
Clonogenic and non-clonogenic parameters of cell survival were compared in irradiated Chinese hamster cells. Clonogenic survival, chromatid break and repair kinetics, as well as DNA damage and repair, were assessed in synchronized cells in different parts of the cell cycle. G 2 chromatid damage and repair was examined in metaphase chromosomes of cells irradiated during S and G 2 phase, treated with or without inhibitors of DNA repair. Bromodeoxyuridine labelling of S phase cells starting at the time of irradiation made it possible to determine precisely, while scoring metaphase chromosomes, whether cells were irradiated in mid S, late S, or G 2 phases of the cycle. The results showed that chromatid breaks induced in S phase are efficiently repaired until the moment cells progress into G 2, when repair stops abruptly. Chromatid damage in G 2 phase is not repaired. On the other hand, DNA double-strand breaks are repaired in all phases of the cycle, even during G 2 phase which has no concurrent chromatid break repair. Finally, there is no consistent correlation between chromatid damage and repair, DNA damage and repair, and cell survival, thus indicating that the interaction of different parameters of radiosensitivity must be better understood for them to be useful predictors of cell survival.
使用纳摩尔浓度的阿克拉霉素 A 增强人类肿瘤细胞系中辐射诱导的细胞杀伤和 DNA 双链断裂。
DOI: --
发表时间: 1992
期刊: Radiation research
影响因子: 3.4
作者:
Bill,CA;Garrett,KC;Harrell,R;Tofilon,PJ
通讯作者: Tofilon,PJ
DOI: 10.1016/0360-3016(86)90220-8
发表时间: 1986-07
期刊: International journal of radiation oncology, biology, physics
影响因子: --
作者:
John F. Ward
通讯作者: John F. Ward
更快地修复抗辐射人类肿瘤细胞中的 DNA 双链断裂。
DOI: 10.1016/0360-3016(88)90125-3
发表时间: 1988
期刊: International journal of radiation oncology, biology, physics
影响因子: --
作者:
Schwartz,JL;Rotmensch,J;Giovanazzi,S;Cohen,MB;Weichselbaum,RR
通讯作者: Weichselbaum,RR
DOI: --
发表时间: 1973
期刊: Mutation research
影响因子: --
作者:
A. Carrano
通讯作者: A. Carrano
DOI: --
发表时间: 1992
影响因子: 8.4
作者:
A. Cassoni;T. McMillan;J. Peacock;G. Steel
通讯作者: G. Steel