SAMHD1 Promotes DNA End Resection to Facilitate DNA Repair by Homologous Recombination.
SAMHD1 Promotes DNA End Resection to Facilitate DNA Repair by Homologous Recombination.
复制标题
SAMHD1促进DNA终端切除术,以通过同源重组促进DNA修复。
DOI:
10.1016/j.celrep.2017.08.008
复制
发表时间:
2017-08-22
期刊:
影响因子:
8.8
通讯作者:
Yu DS
中科院分区:
文献类型:
--
作者:
Daddacha W;Koyen AE;Bastien AJ;Head PE;Dhere VR;Nabeta GN;Connolly EC;Werner E;Madden MZ;Daly MB;Minten EV;Whelan DR;Schlafstein AJ;Zhang H;Anand R;Doronio C;Withers AE;Shepard C;Sundaram RK;Deng X;Dynan WS;Wang Y;Bindra RS;Cejka P;Rothenberg E;Doetsch PW;Kim B;Yu DS
DNA double-strand break (DSB) repair by homologous recombination (HR) is initiated by CtIP/MRN-mediated DNA end resection to maintain genome integrity. SAMHD1 is a dNTP triphosphohydrolase, which restricts HIV-1 infection, and mutations are associated with Aicardi-Goutières syndrome and cancer. We show that SAMHD1 has a dNTPase-independent function in promoting DNA end resection to facilitate DSB repair by HR. SAMHD1 deficiency or Vpx-mediated degradation causes hypersensitivity to DSB-inducing agents, and SAMHD1 is recruited to DSBs. SAMHD1 complexes with CtIP via a conserved carboxyl-terminal domain and recruits CtIP to DSBs to facilitate end resection and HR. Significantly, a cancer-associated mutant with impaired CtIP interaction but not dNTPase-inactive SAMHD1 fails to rescue the end resection impairment of SAMHD1 depletion. Our findings define a dNTPase-independent function for SAMHD1 in HR-mediated DSB repair by facilitating CtIP accrual to promote DNA end resection, providing insight into how SAMHD1 promotes genome integrity and prevents disease, including cancer.
登录
查看更多内容
影响因子:
82.9
作者:
通讯作者:
--
影响因子:
4.3
作者:
Helleday, T;Bryant, HE;Schultz, N
通讯作者:
Schultz, N
影响因子:
64.8
作者:
Goldstone, David C.;Ennis-Adeniran, Valerie;Webb, Michelle
通讯作者:
Webb, Michelle
影响因子:
16.8
作者:
Ji, Xiaoyun;Wu, Ying;Yan, Junpeng;Mehrens, Jennifer;Yang, Haitao;DeLucia, Maria;Hao, Caili;Gronenborn, Angela M.;Skowronski, Jacek;Ahn, Jinwoo;Xiong, Yong
通讯作者:
Xiong, Yong
影响因子:
11.2
作者:
Colbert LE;Petrova AV;Fisher SB;Pantazides BG;Madden MZ;Hardy CW;Warren MD;Pan Y;Nagaraju GP;Liu EA;Saka B;Hall WA;Shelton JW;Gandhi K;Pauly R;Kowalski J;Kooby DA;El-Rayes BF;Staley CA 3rd;Adsay NV;Curran WJ Jr;Landry JC;Maithel SK;Yu DS
通讯作者:
Yu DS