Human RECQ1 promotes restart of replication forks reversed by DNA topoisomerase I inhibition.
Human RECQ1 promotes restart of replication forks reversed by DNA topoisomerase I inhibition.
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DOI:
10.1038/nsmb.2501
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发表时间:
2013-03
影响因子:
16.8
通讯作者:
Vindigni, Alessandro
中科院分区:
文献类型:
--
作者:
Berti, Matteo;Chaudhuri, Arnab Ray;Thangavel, Saravanabhavan;Gomathinayagam, Shivasankari;Kenig, Sasa;Vujanovic, Marko;Odreman, Federico;Glatter, Timo;Graziano, Simona;Mendoza-Maldonado, Ramiro;Marino, Francesca;Lucic, Bojana;Biasin, Valentina;Gstaiger, Matthias;Aebersold, Ruedi;Sidorova, Julia M.;Monnat, Raymond J., Jr.;Lopes, Massimo;Vindigni, Alessandro
Topoisomerase I (TOP1) inhibitors are an important class of anticancer drugs. The cytotoxicity of TOP1 inhibitors can be modulated by replication fork reversal, in a process that requires PARP activity. Whether regressed forks can efficiently restart and the factors required to restart fork progression after fork reversal are still unknown. Here we combined biochemical and electron microscopy approaches with single-molecule DNA fiber analysis, to identify a key role for human RECQ1 helicase in replication fork restart after TOP1 inhibition, not shared by other human RecQ proteins. We show that the poly(ADPribosyl)ation activity of PARP1 stabilizes forks in their regressed state by limiting their restart by RECQ1. These studies provide new mechanistic insights into the roles of RECQ1 and PARP in DNA replication and offer molecular perspectives to potentiate chemotherapeutic regimens based on TOP1 inhibition.
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影响因子:
11.2
作者:
Mao FJ;Sidorova JM;Lauper JM;Emond MJ;Monnat RJ
通讯作者:
Monnat RJ
影响因子:
3.8
作者:
Sharma, Sudha;Phatak, Pornima;LaRocque, Jeannine R.
通讯作者:
LaRocque, Jeannine R.
影响因子:
16.8
作者:
Hanada, Katsuhiro;Budzowska, Magda;Kanaar, Roland
通讯作者:
Kanaar, Roland
影响因子:
37.3
作者:
Mendoza-Maldonado R;Faoro V;Bajpai S;Berti M;Odreman F;Vindigni M;Ius T;Ghasemian A;Bonin S;Skrap M;Stanta G;Vindigni A
通讯作者:
Vindigni A
影响因子:
64.5
作者:
Koster, Daniel A.;Crut, Aurelien;Shuman, Stewart;Bjornsti, Mary-Ann;Dekker, Nynke H.
通讯作者:
Dekker, Nynke H.