1. La protéine NF-Y contrôle la fidelité de l'initiation de la transcription aux promoteurs de gènes à travers la maintenance de région déplétée en nucléosome
- Author
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Raja Jothi, Telmo Henriques, Christopher A. Lavender, Dhirendra Kumar, Senthilkumar Cinghu, Karen Adelman, Andrew J. Oldfield, Brian D. Bennett, Adam B. Burkholder, Pengyi Yang, Damien Paulet, Benjamin S. Scruggs, Eric Rivals, Epigenetics and Stem Cell Biology Laboratory [Durham] (ESCBL-NIEHS-NIH), National Institute of Environmental Health Sciences [Durham] (NIEHS-NIH), National Institutes of Health [Bethesda] (NIH)-National Institutes of Health [Bethesda] (NIH), Harvard Medical School [Boston] (HMS), Maharishi Valmiki Hospital, Méthodes et Algorithmes pour la Bioinformatique (MAB), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut de Biologie Computationnelle (IBC), Institut National de la Recherche Agronomique (INRA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Marquette University, National Institutes of Health [Bethesda] (NIH), ATGC bioinformatics platform Montpellier. the Institut de Biologie Computationnelle (ANR-11-BINF-0002) Institut Français de Bioinformatique (ANR-11-INBS-0013)GEM Flagship project funded from Labex NUMEV (ANR-10-LABX-0020)France Génomique., ANR-10-LABX-0020/10-LABX-0020,NUMEV,Digital and Hardware Solutions and Modeling for the Environement and Life Sciences(2010), ANR-11-INBS-0013/11-INBS-0013,ReNaBi-IFB,Institut français de bioinformatique(2011), ANR-11-BINF-0002,IBC,Institut de Biologie Computationnelle de Montpellier(2011), ANR-10-INBS-09-01/10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Université de Montpellier (UM)-Institut National de la Recherche Agronomique (INRA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS), Marquette University [Milwaukee], ANR-10-LABX-0020,NUMEV,Digital and Hardware Solutions and Modeling for the Environement and Life Sciences(2010), ANR-11-INBS-0013,IFB (ex Renabi-IFB),Institut français de bioinformatique(2011), ANR-11-BINF-0002,IBC,Institut de biologie Computationnelle(2011), and ANR-10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010)
- Subjects
0301 basic medicine ,General Physics and Astronomy ,[SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC] ,02 engineering and technology ,Mice ,0302 clinical medicine ,Transcription (biology) ,Gene expression ,Gene Knockdown Techniques ,RNA, Small Interfering ,Promoter Regions, Genetic ,lcsh:Science ,Transcription Initiation, Genetic ,0303 health sciences ,Multidisciplinary ,021001 nanoscience & nanotechnology ,[SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM] ,Chromatin ,Nucleosomes ,3. Good health ,Cell biology ,Transcription Initiation Site ,0210 nano-technology ,Transcription ,Science ,Protein domain ,Site Transcription Initiation ,Genomics ,Biology ,Small Interfering ,Article ,General Biochemistry, Genetics and Molecular Biology ,Cell Line ,Promoter Regions ,03 medical and health sciences ,[SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN] ,Animals ,Nucleosome ,Transcription factor ,Embryonic Stem Cells ,030304 developmental biology ,Promoter ,General Chemistry ,Metabolism ,030104 developmental biology ,CCAAT-Binding Factor ,RNA ,lcsh:Q ,[INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] ,030217 neurology & neurosurgery - Abstract
Faithful transcription initiation is critical for accurate gene expression, yet the mechanisms underlying specific transcription start site (TSS) selection in mammals remain unclear. Here, we show that the histone-fold domain protein NF-Y, a ubiquitously expressed transcription factor, controls the fidelity of transcription initiation at gene promoters in mouse embryonic stem cells. We report that NF-Y maintains the region upstream of TSSs in a nucleosome-depleted state while simultaneously protecting this accessible region against aberrant and/or ectopic transcription initiation. We find that loss of NF-Y binding in mammalian cells disrupts the promoter chromatin landscape, leading to nucleosomal encroachment over the canonical TSS. Importantly, this chromatin rearrangement is accompanied by upstream relocation of the transcription pre-initiation complex and ectopic transcription initiation. Further, this phenomenon generates aberrant extended transcripts that undergo translation, disrupting gene expression profiles. These results suggest NF-Y is a central player in TSS selection in metazoans and highlight the deleterious consequences of inaccurate transcription initiation., The mechanisms underlying specific TSS selection in mammals remain unclear. Here the authors show that the ubiquitously expressed transcription factor NF-Y regulate fidelity of transcription initiation at gene promoters, maintaining the region upstream of TSSs in a nucleosome-depleted state, while protecting this region from ectopic transcription initiation.
- Published
- 2019