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  • Mice  (2)
  • Binding Sites
  • Errata
  • Superfluidity and superconductivity
  • 2010-2014  (2)
  • 2010  (2)
  • 1
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    PTIP promotes chromatin changes critical for immunoglobulin class switch recombination (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-31
    Description: Programmed genetic rearrangements in lymphocytes require transcription at antigen receptor genes to promote accessibility for initiating double-strand break (DSB) formation critical for DNA recombination and repair. Here, we showed that activated B cells deficient in the PTIP component of the MLL3 (mixed-lineage leukemia 3)-MLL4 complex display impaired trimethylation of histone 3 at lysine 4 (H3K4me3) and transcription initiation of downstream switch regions at the immunoglobulin heavy-chain (Igh) locus, leading to defective immunoglobulin class switching. We also showed that PTIP accumulation at DSBs contributes to class switch recombination (CSR) and genome stability independently of Igh switch transcription. These results demonstrate that PTIP promotes specific chromatin changes that control the accessibility of the Igh locus to CSR and suggest a nonredundant role for the MLL3-MLL4 complex in altering antibody effector function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3008398/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3008398/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, Jeremy A -- Santos, Margarida Almeida -- Wang, Zhibin -- Zang, Chongzhi -- Schwab, Kristopher R -- Jankovic, Mila -- Filsuf, Darius -- Chen, Hua-Tang -- Gazumyan, Anna -- Yamane, Arito -- Cho, Young-Wook -- Sun, Hong-Wei -- Ge, Kai -- Peng, Weiqun -- Nussenzweig, Michel C -- Casellas, Rafael -- Dressler, Gregory R -- Zhao, Keji -- Nussenzweig, Andre -- Z01 AR041149-03/Intramural NIH HHS/ -- Z01 AR041149-04/Intramural NIH HHS/ -- Z01 DK047055-01/Intramural NIH HHS/ -- Z01 DK047055-02/Intramural NIH HHS/ -- Z01 DK075003-04/Intramural NIH HHS/ -- Z01 DK075003-05/Intramural NIH HHS/ -- Z99 DK999999/Intramural NIH HHS/ -- ZIA AR041149-05/Intramural NIH HHS/ -- ZIA DK075017-03/Intramural NIH HHS/ -- ZIADK047055-03/DK/NIDDK NIH HHS/ -- ZIADK075003-06/DK/NIDDK NIH HHS/ -- ZIADK075017-01/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Aug 20;329(5994):917-23. doi: 10.1126/science.1187942. Epub 2010 Jul 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20671152" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Specificity/genetics ; Carrier Proteins/genetics/*physiology ; Cytidine Deaminase/metabolism ; Dna ; Histones/metabolism ; Immunoglobulin Class Switching/genetics/*physiology ; Immunoglobulin Switch Region ; Methylation ; Mice ; Nuclear Proteins/genetics/*physiology ; Promoter Regions, Genetic ; Recombination, Genetic ; Transcriptional Activation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Dnmt3a-dependent nonpromoter DNA methylation facilitates transcription of neurogenic genes (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-07-24
    Description: DNA methylation at proximal promoters facilitates lineage restriction by silencing cell type-specific genes. However, euchromatic DNA methylation frequently occurs in regions outside promoters. The functions of such nonproximal promoter DNA methylation are unclear. Here we show that the de novo DNA methyltransferase Dnmt3a is expressed in postnatal neural stem cells (NSCs) and is required for neurogenesis. Genome-wide analysis of postnatal NSCs indicates that Dnmt3a occupies and methylates intergenic regions and gene bodies flanking proximal promoters of a large cohort of transcriptionally permissive genes, many of which encode regulators of neurogenesis. Surprisingly, Dnmt3a-dependent nonproximal promoter methylation promotes expression of these neurogenic genes by functionally antagonizing Polycomb repression. Thus, nonpromoter DNA methylation by Dnmt3a may be used for maintaining active chromatin states of genes critical for development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3539760/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3539760/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Hao -- Coskun, Volkan -- Tao, Jifang -- Xie, Wei -- Ge, Weihong -- Yoshikawa, Kazuaki -- Li, En -- Zhang, Yi -- Sun, Yi Eve -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Jul 23;329(5990):444-8. doi: 10.1126/science.1190485.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Medical Pharmacology, University of California Los Angeles (UCLA), Los Angeles, CA 90095, USA. haowu7@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20651149" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Brain/cytology/growth & development/*metabolism ; Chromatin Immunoprecipitation ; DNA (Cytosine-5-)-Methyltransferase/*metabolism ; *DNA Methylation ; DNA, Intergenic ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Genome ; Histones/genetics/metabolism ; Mice ; Mice, Knockout ; Nervous System/growth & development ; Neurogenesis/*genetics ; Neuroglia/cytology ; Neurons/*cytology/metabolism ; Polycomb-Group Proteins ; Promoter Regions, Genetic ; Repressor Proteins/metabolism ; Stem Cells/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
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