MutS homologue hMSH4: interaction with eIF3f and a role in NHEJ-mediated DSB repair.
MutS homologue hMSH4: interaction with eIF3f and a role in NHEJ-mediated DSB repair.
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DOI:
10.1186/1476-4598-12-51
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发表时间:
2013-06-02
期刊:
影响因子:
37.3
通讯作者:
Her C
中科院分区:
文献类型:
--
作者:
Chu YL;Wu X;Xu Y;Her C
DNA mismatch repair proteins participate in diverse cellular functions including DNA damage response and repair. As a member of this protein family, the molecular mechanisms of hMSH4 in mitotic cells are poorly defined. It is known that hMSH4 is promiscuous, and among various interactions the hMSH4-hMSH5 interaction is involved in recognizing DNA intermediate structures arising from homologous recombination (HR). We identified a new hMSH4 interacting protein eIF3f – a protein that functions not only in translation but also in the regulation of apoptosis and tumorigenesis in humans. Our studies have demonstrated that hMSH4-eIF3f interaction is mediated through the N-terminal regions of both proteins. The interaction with eIF3f fosters hMSH4 protein stabilization, which in turn sustains γ-H2AX foci and compromises cell survival in response to ionizing radiation (IR)-induced DNA damage. These effects can be, at least partially, attributed to the down-regulation of NHEJ activity by hMSH4. Furthermore, the interplay between hMSH4 and eIF3f inhibits IR-induced AKT activation, and hMSH4 promotes eIF3f-mediated bypass of S phase arrest, and ultimately enhancing an early G2/M arrest in response to IR treatment. Our current study has revealed a role for hMSH4 in the maintenance of genomic stability by suppressing NHEJ-mediated DSB repair.
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影响因子:
3.1
作者:
Her, Chengtao;Zhao, Nianxi;Tompkins, Joshua D.
通讯作者:
Tompkins, Joshua D.
影响因子:
8
作者:
Deng, R.;Tang, J.;Zhu, X-F
通讯作者:
Zhu, X-F
影响因子:
11.4
作者:
Lagirand-Cantaloube, Julie;Offner, Nicolas;Leibovitch, Serge A.
通讯作者:
Leibovitch, Serge A.
DOI:
10.1038/nrm2851
发表时间:
2010-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
3.7
作者:
Csibi A;Cornille K;Leibovitch MP;Poupon A;Tintignac LA;Sanchez AM;Leibovitch SA
通讯作者:
Leibovitch SA