RIF1-ASF1-mediated high-order chromatin structure safeguards genome integrity.
RIF1-ASF1-mediated high-order chromatin structure safeguards genome integrity.
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DOI:
10.1038/s41467-022-28588-y
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发表时间:
2022-02-17
影响因子:
16.6
通讯作者:
Xu D
中科院分区:
文献类型:
--
作者:
Feng S;Ma S;Li K;Gao S;Ning S;Shang J;Guo R;Chen Y;Blumenfeld B;Simon I;Li Q;Guo R;Xu D
The 53BP1-RIF1 pathway antagonizes resection of DNA broken ends and confers PARP inhibitor sensitivity on BRCA1-mutated tumors. However, it is unclear how this pathway suppresses initiation of resection. Here, we identify ASF1 as a partner of RIF1 via an interacting manner similar to its interactions with histone chaperones CAF-1 and HIRA. ASF1 is recruited to distal chromatin flanking DNA breaks by 53BP1-RIF1 and promotes non-homologous end joining (NHEJ) using its histone chaperone activity. Epistasis analysis shows that ASF1 acts in the same NHEJ pathway as RIF1, but via a parallel pathway with the shieldin complex, which suppresses resection after initiation. Moreover, defects in end resection and homologous recombination (HR) in BRCA1-deficient cells are largely suppressed by ASF1 deficiency. Mechanistically, ASF1 compacts adjacent chromatin by heterochromatinization to protect broken DNA ends from BRCA1-mediated resection. Taken together, our findings identify a RIF1-ASF1 histone chaperone complex that promotes changes in high-order chromatin structure to stimulate the NHEJ pathway for DSB repair. The 53BP1-RIF1 pathway is important for DNA repair. Here, the authors identified the histone chaperone ASF1, which functions as a suppressor of DNA end resection through changing high-order chromatin structure, as a partner of RIF1. This finding links DNA repair and dynamic changes of high-order chromatin structure.
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DOI:
10.15252/embj.2018100158
发表时间:
2018-09-14
期刊:
The EMBO journal
影响因子:
--
作者:
Findlay S;Heath J;Luo VM;Malina A;Morin T;Coulombe Y;Djerir B;Li Z;Samiei A;Simo-Cheyou E;Karam M;Bagci H;Rahat D;Grapton D;Lavoie EG;Dove C;Khaled H;Kuasne H;Mann KK;Klein KO;Greenwood CM;Tabach Y;Park M;Côté JF;Masson JY;Maréchal A;Orthwein A
通讯作者:
Orthwein A
DOI:
10.1083/jcb.200510130
发表时间:
2006-04-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bekker-Jensen S;Lukas C;Kitagawa R;Melander F;Kastan MB;Bartek J;Lukas J
通讯作者:
Lukas J
影响因子:
4
作者:
Chapman, J. Ross;Sossick, Alex J.;Jackson, Stephen P.
通讯作者:
Jackson, Stephen P.
影响因子:
16
作者:
Escribano-Diaz, Cristina;Orthwein, Alexandre;Durocher, Daniel
通讯作者:
Durocher, Daniel
DOI:
10.1083/jcb.200902039
发表时间:
2009-11-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
Buonomo SB;Wu Y;Ferguson D;de Lange T
通讯作者:
de Lange T