Loss of DNA loop supercoiling and organization in cells infected by herpes simplex virus type 1

被引:17
作者
Aranda-Anzaldo, A
Dent, MAR
机构
[1] Univ Autonoma Estado Mexico, Fac Med, Mol Biol Lab, Toluca 50000, Mexico, Mexico
[2] Univ Autonoma Estado Mexico, Fac Med, Lab Neurociencias, Toluca 50000, Mexico, Mexico
来源
RESEARCH IN VIROLOGY | 1997年 / 148卷 / 06期
关键词
chromatin; herpesvirus; DNA; loops; repair; HSV1; nuclear matrix; nucleoids; UV radiation;
D O I
10.1016/S0923-2516(97)83629-1
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
In cells infected by herpesviruses, a sequence of nuclear changes during interphase, as well as chromosomal aberrations during mitosis, are commonly observed. These changes suggest the progressive modification of host-cell chromatin, Previous studies have shown that the early chromatin modifications in cells infected by herpes simplex virus type 1 (HSV1) are not due to extensive breakdown of host-cell DNA or disruption of the nucleosomal structure. We have previously shown that infection by HSV1 induces single-stranded breaks in the host-cell DNA early in the course of infection, and that such breaks lead to modifications in the higher-order structure of host-cell chromatin, Here we report that virus-induced DNA breaks produce permanent long-term effects on the state of supercoiling and organization of the nuclear DNA loops, comparable to the DNA loop disorganization produced by high (and irreparable) doses of ultraviolet radiation.
引用
收藏
页码:397 / 408
页数:12
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