Polo-like kinase 3 regulates CtIP during DNA double-strand break repair in G1.

Polo-like kinase 3 regulates CtIP during DNA double-strand break repair in G1.
复制标题

DOI:
10.1083/jcb.201401146
复制
发表时间:
2014-09-29
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Löbrich M
Löbrich M
中科院分区:
其他
文献类型:
--
作者:
Barton O;Naumann SC;Diemer-Biehs R;Künzel J;Steinlage M;Conrad S;Makharashvili N;Wang J;Feng L;Lopez BS;Paull TT;Chen J;Jeggo PA;Löbrich M

文献摘要

参考文献

被引文献

相似文献

Plk3在G1期以一种损伤诱导的方式磷酸化CtIP,并且与CtIP一起对于复杂双链断裂的修复以及切除介导的末端连接途径的调控是必需的。 DNA双链断裂(DSBs)通过非同源末端连接(NHEJ)或同源重组(HR)进行修复。C末端结合蛋白相互作用蛋白(CtIP)在G2期被细胞周期蛋白依赖性激酶磷酸化以启动切除并促进HR。CtIP在NHEJ过程中也发挥作用,尽管在G1期磷酸化CtIP的机制尚不清楚。在本文中,我们将Plk3(波罗样激酶3)鉴定为一种新的DSB反应因子,它在G1期以一种损伤诱导的方式磷酸化CtIP,并影响G1期的各种细胞过程。首先,Plk3和CtIP增强电离辐射诱导的易位的形成;其次,它们促进由限制性内切酶诱导的DSBs产生大规模的基因组缺失;第三,它们对于复杂DSBs的切除和修复是必需的;最后,它们调节Ku - / - 突变体中的选择性NHEJ过程。我们表明将CtIP的S327或T847突变为不可磷酸化的丙氨酸会产生与Plk3或CtIP缺失相似的表型。Plk3通过其波罗框结构域与在S327磷酸化的CtIP结合,这对于损伤诱导的CtIP在S327的强烈磷酸化以及随后CtIP在T847的磷酸化是必需的。
Plk3 phosphorylates CtIP in G1 in a damage-inducible manner and is required with CtIP for the repair of complex double-strand breaks and regulation of resection-mediated end-joining pathways. DNA double-strand breaks (DSBs) are repaired by nonhomologous end joining (NHEJ) or homologous recombination (HR). The C terminal binding protein–interacting protein (CtIP) is phosphorylated in G2 by cyclin-dependent kinases to initiate resection and promote HR. CtIP also exerts functions during NHEJ, although the mechanism phosphorylating CtIP in G1 is unknown. In this paper, we identify Plk3 (Polo-like kinase 3) as a novel DSB response factor that phosphorylates CtIP in G1 in a damage-inducible manner and impacts on various cellular processes in G1. First, Plk3 and CtIP enhance the formation of ionizing radiation-induced translocations; second, they promote large-scale genomic deletions from restriction enzyme-induced DSBs; third, they are required for resection and repair of complex DSBs; and finally, they regulate alternative NHEJ processes in Ku−/− mutants. We show that mutating CtIP at S327 or T847 to nonphosphorylatable alanine phenocopies Plk3 or CtIP loss. Plk3 binds to CtIP phosphorylated at S327 via its Polo box domains, which is necessary for robust damage-induced CtIP phosphorylation at S327 and subsequent CtIP phosphorylation at T847.
DOI: 10.1083/jcb.129.6.1617
发表时间: 1995-06
期刊: The Journal of cell biology
影响因子: --
作者:
Golsteyn RM;Mundt KE;Fry AM;Nigg EA
通讯作者: Nigg EA
DOI: 10.1073/pnas.0915067107
发表时间: 2010-02-16
影响因子: 11.1
作者:
Boboila, Cristian;Jankovic, Mila;Alt, Frederick W.
通讯作者: Alt, Frederick W.
DOI: 10.1158/1535-7163.mct-06-0543
发表时间: 2007-02-01
影响因子: 5.7
作者:
Lansing, Timothy J.;McConnell, Randy T.;Cheung, Mui
通讯作者: Cheung, Mui
由 53BP1-RIF1 和 BRCA1-CtIP 组成的细胞周期依赖性调节回路控制 DNA 修复途径的选择。
DOI: 10.1016/j.molcel.2013.01.001
发表时间: 2013-03-07
期刊: MOLECULAR CELL
影响因子: 16
作者:
Escribano-Diaz, Cristina;Orthwein, Alexandre;Durocher, Daniel
通讯作者: Durocher, Daniel
人CTIP介导DNA终端切除和双链断裂修复的细胞周期控制。
DOI: 10.1074/jbc.m808906200
发表时间: 2009-04-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
Huertas P;Jackson SP
通讯作者: Jackson SP