Bloom's syndrome helicase and Mus81 are required to induce transient double-strand DNA breaks in response to DNA replication stress.
Bloom's syndrome helicase and Mus81 are required to induce transient double-strand DNA breaks in response to DNA replication stress.
复制标题
布卢姆氏综合征解旋酶和 Mus81 需要诱导短暂的双链 DNA 断裂以响应 DNA 复制应激。
DOI:
10.1016/j.jmb.2007.11.006
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发表时间:
2008
影响因子:
5.6
通讯作者:
Aladjem,MiritI
中科院分区:
文献类型:
--
作者:
Shimura,Tsutomu;Torres,MichaelJ;Martin,MelveniaM;Rao,VAshutosh;Pommier,Yves;Katsura,Mari;Miyagawa,Kiyoshi;Aladjem,MiritI
Perturbed DNA replication either activates a cell cycle checkpoint, which halts DNA replication, or decreases the rate of DNA synthesis without activating a checkpoint. Here we report that at low doses, replication inhibitors did not activate a cell cycle checkpoint, but they did activate a process that required functional Bloom's syndrome-associated (BLM) helicase, Mus81 nuclease and ataxia telangiectasia mutated and Rad3-related (ATR) kinase to induce transient double-stranded DNA breaks. The induction of transient DNA breaks was accompanied by dissociation of proliferating cell nuclear antigen (PCNA) and DNA polymerase α from replication forks. In cells with functional BLM, Mus81 and ATR, the transient breaks were promptly repaired and DNA continued to replicate at a slow pace in the presence of replication inhibitors. In cells that lacked BLM, Mus81, or ATR, transient breaks did not form, DNA replication did not resume, and exposure to low doses of replication inhibitors was toxic. These observations suggest that BLM helicase, ATR kinase, and Mus81 nuclease are required to convert perturbed replication forks to DNA breaks when cells encounter conditions that decelerate DNA replication, thereby leading to the rapid repair of those breaks and resumption of DNA replication without incurring DNA damage and without activating a cell cycle checkpoint.
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DOI:
10.1083/jcb.200402095
发表时间:
2004-06-21
期刊:
The Journal of cell biology
影响因子:
--
作者:
Li W;Kim SM;Lee J;Dunphy WG
通讯作者:
Dunphy WG
DOI:
10.1073/pnas.0603779103
发表时间:
2006-06-27
影响因子:
11.1
作者:
Marti, Thomas M.;Hefner, Eli;Cleaver, James E.
通讯作者:
Cleaver, James E.
影响因子:
11.2
作者:
Zhang,Ran;Sengupta,Sagar;Yang,Qin;Linke,StevenP;Yanaihara,Nozomu;Bradsher,John;Blais,Veronique;McGowan,ClareH;Harris,CurtisC
通讯作者:
Harris,CurtisC
影响因子:
10.5
作者:
MacDougall, Christina A.;Byun, Tony S.;Cimprich, Karlene A.
通讯作者:
Cimprich, Karlene A.
影响因子:
11.2
作者:
G. Pedrali;M. Belvedere;T. Crepaldi;F. Focher;S. Spadari
通讯作者:
S. Spadari