CTCF-binding elements mediate control of V(D)J recombination.
CTCF-binding elements mediate control of V(D)J recombination.
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CTCF结合元件介导V(d)J重组的控制。
DOI:
10.1038/nature10495
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发表时间:
2011-09-11
期刊:
影响因子:
64.8
通讯作者:
Alt, Frederick W.
中科院分区:
文献类型:
--
作者:
Guo, Chunguang;Yoon, Hye Suk;Franklin, Andrew;Jain, Suvi;Ebert, Anja;Cheng, Hwei-Ling;Hansen, Erica;Despo, Orion;Bossen, Claudia;Vettermann, Christian;Bates, Jamie G.;Richards, Nicholas;Myers, Darienne;Patel, Harin;Gallagher, Michael;Schlissel, Mark S.;Murre, Cornelis;Busslinger, Meinrad;Giallourakis, Cosmas C.;Alt, Frederick W.
Immunoglobulin heavy chain (IgH) variable region exons are assembled from VH, D and JH gene segments in developing B lymphocytes. Within the 2.7 megabase (Mb) mouse IgH locus (IgH), V(D)J recombination is regulated to ensure specific and diverse antibody repertoires. Herein, we report a key IgH V(D)J recombination regulatory region, termed InterGenic Control Region-1 (IGCR1), that lies between the VH and D clusters. Functionally, IGCR1 employs CTCF looping/insulator factor binding elements and, correspondingly, mediates IgH loops containing distant enhancers. IGCR1 promotes normal B cell development and balances antibody repertoires by inhibiting transcription and rearrangement of DH-proximal VHs and promoting rearrangement of distal VHs. IGCR1 maintains ordered and lineage-specific VH(D)JH recombination, respectively, by suppressing VH joining to Ds not joined to JHs and VH to DJH joins in thymocytes. IGCR1 also is required to allow feedback regulation and allelic exclusion of proximal VH to DJH recombination. Our studies elucidate a long-sought IgH V(D)J recombination control region and implicate a new role for the generally expressed CTCF protein.
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影响因子:
4.4
作者:
Degner, Stephanie C.;Wong, Timothy P.;Jankevicius, Gytis;Feeney, Ann J.
通讯作者:
Feeney, Ann J.
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通讯作者:
Cumano, A
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Groudine, Mark
影响因子:
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作者:
CHEN, JZ;YOUNG, F;ALT, FW
通讯作者:
ALT, FW