ZNF830 mediates cancer chemoresistance through promoting homologous-recombination repair.

ZNF830 mediates cancer chemoresistance through promoting homologous-recombination repair.
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ZNF830 通过促进同源重组修复介导癌症化疗耐药

DOI:
10.1093/nar/gkx1258
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发表时间:
2018-02-16
影响因子:
14.9
通讯作者:
Wang F
Wang F
中科院分区:
生物学2区
文献类型:
--
作者:
Chen G;Chen J;Qiao Y;Shi Y;Liu W;Zeng Q;Xie H;Shi X;Sun Y;Liu X;Li T;Zhou L;Wan J;Xie T;Wang H;Wang F

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摘要同源重组(HR)介导DNA双链断裂(DSB)的修复,对于维持基因组完整性和提高人类癌症化疗和放疗后的生存率至关重要。然而,HR修复在治疗抵抗中改善癌症治疗的机制仍不清楚。在这里,我们报告了锌指蛋白830(ZNF 830)促进HR修复和癌细胞对DNA损伤的反应。在机制上,ZNF 830通过与CtIP相互作用并调节CtIP向DNA损伤位点的募集直接参与DNA末端切除。此外,ZNF 830在DNA损伤位点的募集依赖于ATR在丝氨酸362处的磷酸化。ZNF 830通过其锌指结构域(Znf domain)与双链DNA的3′或5′突出端直接结合,促进HR修复,维持基因组稳定性。因此,我们的研究确定了ZNF 830作为HR修复调节剂在DNA末端切除中的新功能,赋予那些过表达ZNF 830的癌症对遗传毒性治疗的化学抗性。
Abstract Homologous recombination (HR), which mediates the repair of DNA double-strand breaks (DSB), is crucial for maintaining genomic integrity and enhancing survival in response to chemotherapy and radiotherapy in human cancers. However, the mechanisms of HR repair in treatment resistance for the improvement of cancer therapy remains unclear. Here, we report that the zinc finger protein 830 (ZNF830) promotes HR repair and the survival of cancer cells in response to DNA damage. Mechanistically, ZNF830 directly participates in DNA end resection via interacting with CtIP and regulating CtIP recruitment to DNA damage sites. Moreover, the recruitment of ZNF830 at DNA damage sites is dependent on its phosphorylation at serine 362 by ATR. ZNF830 directly and preferentially binds to double-strand DNA with its 3′ or 5′ overhang through the Zinc finger (Znf) domain, facilitating HR repair and maintaining genome stability. Thus, our study identified a novel function of ZNF830 as a HR repair regulator in DNA end resection, conferring the chemoresistance to genotoxic therapy for cancers those that overexpress ZNF830.
DOI: 10.1126/science.1261971
发表时间: 2015-01-09
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Ochi T;Blackford AN;Coates J;Jhujh S;Mehmood S;Tamura N;Travers J;Wu Q;Draviam VM;Robinson CV;Blundell TL;Jackson SP
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期刊: Cancer research
影响因子: 11.2
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发表时间: 2016-07-21
期刊: Nature
影响因子: 64.8
作者:
Ray Chaudhuri A;Callen E;Ding X;Gogola E;Duarte AA;Lee JE;Wong N;Lafarga V;Calvo JA;Panzarino NJ;John S;Day A;Crespo AV;Shen B;Starnes LM;de Ruiter JR;Daniel JA;Konstantinopoulos PA;Cortez D;Cantor SB;Fernandez-Capetillo O;Ge K;Jonkers J;Rottenberg S;Sharan SK;Nussenzweig A
通讯作者: Nussenzweig A
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
DOI: 10.1038/nrm2851
发表时间: 2010-03
期刊: Nature reviews. Molecular cell biology
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