MSH2/MSH6 complex promotes error-free repair of AID-induced dU:G mispairs as well as error-prone hypermutation of A:T sites.
MSH2/MSH6 complex promotes error-free repair of AID-induced dU:G mispairs as well as error-prone hypermutation of A:T sites.
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DOI:
10.1371/journal.pone.0011182
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发表时间:
2010-06-17
期刊:
影响因子:
3.7
通讯作者:
Scharff MD
中科院分区:
文献类型:
--
作者:
Roa S;Li Z;Peled JU;Zhao C;Edelmann W;Scharff MD
Mismatch repair of AID-generated dU:G mispairs is critical for class switch recombination (CSR) and somatic hypermutation (SHM) in B cells. The generation of a previously unavailable Msh2−/−Msh6−/− mouse has for the first time allowed us to examine the impact of the complete loss of MutSα on lymphomagenesis, CSR and SHM. The onset of T cell lymphomas and the survival of Msh2−/−Msh6−/− and Msh2−/−Msh6−/−Msh3−/− mice are indistinguishable from Msh2−/− mice, suggesting that MSH2 plays the critical role in protecting T cells from malignant transformation, presumably because it is essential for the formation of stable MutSα heterodimers that maintain genomic stability. The similar defects on switching in Msh2−/−, Msh2−/−Msh6−/− and Msh2−/−Msh6−/−Msh3−/− mice confirm that MutSα but not MutSβ plays an important role in CSR. Analysis of SHM in Msh2−/−Msh6−/− mice not only confirmed the error-prone role of MutSα in the generation of strand biased mutations at A:T bases, but also revealed an error-free role of MutSα when repairing some of the dU:G mispairs generated by AID on both DNA strands. We propose a model for the role of MutSα at the immunoglobulin locus where the local balance of error-free and error-prone repair has an impact in the spectrum of mutations introduced during Phase 2 of SHM.
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DOI:
10.1084/jem.187.11.1745
发表时间:
1998-06-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Phung QH;Winter DB;Cranston A;Tarone RE;Bohr VA;Fishel R;Gearhart PJ
通讯作者:
Gearhart PJ
DOI:
10.1084/jem.20040355
发表时间:
2004-07-05
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Li Z;Scherer SJ;Ronai D;Iglesias-Ussel MD;Peled JU;Bardwell PD;Zhuang M;Lee K;Martin A;Edelmann W;Scharff MD
通讯作者:
Scharff MD
影响因子:
15.3
作者:
Langerak, Petra;Nygren, Anders O. H.;Krijger, Peter H. L.;van den Berk, Paul C. M.;Jacobs, Heinz
通讯作者:
Jacobs, Heinz
DOI:
10.1084/jem.187.11.1735
发表时间:
1998-06-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Jacobs H;Fukita Y;van der Horst GT;de Boer J;Weeda G;Essers J;de Wind N;Engelward BP;Samson L;Verbeek S;de Murcia JM;de Murcia G;te Riele H;Rajewsky K
通讯作者:
Rajewsky K
影响因子:
9.2
作者:
Rada, C;Williams, GT;Neuberger, MS
通讯作者:
Neuberger, MS