Role of poly(adenosine diphosphate ribose) in deoxyribonucleic acid repair in human fibroblasts.

Role of poly(adenosine diphosphate ribose) in deoxyribonucleic acid repair in human fibroblasts.
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聚(二磷酸腺苷核糖)在人成纤维细胞脱氧核糖核酸修复中的作用。

DOI:
10.1021/bi00260a016
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发表时间:
1982
期刊:
影响因子:
2.9
通讯作者:
A. Lehmann
A. Lehmann
中科院分区:
生物学3区
文献类型:
--
作者:
M. James;A. Lehmann

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我们通过观察聚二磷酸腺苷核糖合成的特异性抑制剂3-氨基苯甲酰胺(3AB)在DNA修复的各个方面的作用,研究了聚二磷酸腺苷核糖在人成纤维细胞DNA修复中的作用。用硫酸二甲酯(DMS)处理人成纤维细胞后,3AB延缓了链断裂的连接;低剂量DMS不影响计划外DNA合成,但高剂量DMS刺激计划外DNA合成。3AB也增强了DMS的细胞毒性。辐照后,3AB对单链断裂的重新连接有轻微的抑制作用,但对双链断裂的重新连接、计划外DNA合成、DNA复制合成或细胞毒性没有影响。3AB对紫外光损伤的修复无明显影响。基于不同处理后成纤维细胞切除修复过程各步骤的不同动力学,我们的研究结果可以解释为poly(adp -核糖)的合成参与了切除修复的结扎步骤。
We have investigated the role of poly(adenosine diphosphate ribose) in DNA repair in human fibroblasts by observing the effects of 3-aminobenzamide (3AB), a specific inhibitor of poly(ADP-ribose) synthesis, on various aspects of DNA repair. After treatment of human fibroblasts with dimethyl sulfate (DMS), 3AB retarded the joining of strand breaks; unscheduled DNA synthesis was unaffected after low doses of DMS but was stimulated after high doses. 3AB also enhanced the cytotoxicity of DMS. After gamma irradiation there was a slight inhibition by 3AB of the rejoining of single-strand breaks but no effect on the rejoining of double-strand breaks, unscheduled DNA synthesis, DNA replicative synthesis, or cytotoxicity. There were no effects of 3AB on the repair of UV damage. On the basis of the different kinetics of the various steps of excision repair processes after different treatments of fibroblasts, our results are interpreted as evidence that the synthesis of poly(ADP-ribose) is involved in the ligation step of excision repair.
着色性干皮病基因型杂合或纯合细胞中 DNA 损伤后的聚 (ADP-核糖) 合成。
DOI: --
发表时间: 1981
期刊: The Journal of biological chemistry
影响因子: --
作者:
McCurry,LS;Jacobson,MK
通讯作者: Jacobson,MK
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DOI: 10.1016/0006-291x(80)91581-8
发表时间: 1980
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影响因子: 3.1
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