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Journal Article

Yin Yang 1 is a critical regulator of B-cell development

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Hobeika,  Elias
Research Group and Chair of Molecular Immunology of the University of Freiburg, Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Jumaa,  Hassan
Research Group and Chair of Molecular Immunology of the University of Freiburg, Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Pelanda,  Roberta
Research Group and Chair of Molecular Immunology of the University of Freiburg, Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Reth,  Michael
Research Group and Chair of Molecular Immunology of the University of Freiburg, Max Planck Institute of Immunobiology and Epigenetics, Max Planck Society;

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Citation

Liu, H., Schmidt-Supprian, M., Shi, Y., Hobeika, E., Barteneva, N., Jumaa, H., et al. (2007). Yin Yang 1 is a critical regulator of B-cell development. Genes & Development, 21, 1179-1189.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-91CD-6
Abstract
The role of the transcription factor Yin Yang 1 (YY1) in development is largely unknown. Here we show that specific ablation of YY1 in mouse B cells caused a defect in somatic rearrangement in the immunoglobulin heavy-chain (IgH) locus and a block in the progenitor-B-to-precursor-B-cell transition, which was partially rescued by a prerearranged IgH transgene. Three-dimensional DNA fluorescence in situ hybridization analysis revealed an important function for YY1 in IgH locus contraction, a process indispensable for distal VH to DHJH recombi-nation. We provide evidence that YY1 binds the intronic Eiμ enhancer within the IgH locus, consistent with a direct role for YY1 in VHDHJH recombination. These findings identified YY1 as a critical regulator of early B-cell development.