Cited by 272Genomics and Chromatin DynamicsChromatin Remodeling and CancerEstrogen and related hormone effects

Nuclear receptors coordinate the activities of chromatin remodeling complexes and coactivators to facilitate initiation of transcription

Dilworth, F Jeffrey, Chambon, Pierre·2001·Oncogene

Abstract

Recent advances in the field of in vitro chromatin assembly have led to in vitro transcription systems which reproduce in the test tube, in vivo characteristics of ligand-dependent transcriptional activation by nuclear receptors. Dissection of these systems has begun to provide us with information concerning the underlying molecular mechanisms. Through recruitment of coactivator proteins, nuclear receptors act first to remodel chromatin within the promoter region and then to recruit the transcriptional machinery to the promoter region in order to initiate transcription. Here we present a possible sequential mechanism for ligand-dependent transcriptional activation by nuclear receptors and discuss the in vitro and in vivo data that support this model.

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Crossref · 10.1038/sj.onc.1204329

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  • In the absence of ligand, transcription is turned off by RXR/RAR heterodimers bound to DNA and associated to corepressor complexes.

    “In the absence of ligand, transcription is turned “off” by RXR/RAR heterodimers bound to DNA and associated to corepressor complexes”
  • In the absence of ligand, the DNA-bound RARα subtype is associated with corepressors, which serve as adaptors recruiting high molecular weight complexes endowed with histone deacetylase (HDAC) activity.

    “According to the current model of gene regulation by RARs ( 89 ), in the absence of ligand, the DNA-bound RAR ␣ subtype is associated with corepressors, which serve as adaptors recruiting high molecular weight complexes endowed with histone deacetylase (HDAC) activity ( 90 ).”
  • These complexes deacetylate lysine residues in the N-terminal tails of histones and maintain chromatin in a condensed, repressed state over the target promoter.

    “These complexes deacetylate lysine residues in the N-terminal tails of histones and maintain chromatin in a condensed, repressed state over the target promoter ( 35, 89 ) ( Fig. 4A ).”
  • Activated RARs recruit the transcription machinery, including the multisubunit Mediator complex, RNA polymerase II, and the general transcription factors.

    “Then, activated RARs recruit the transcription machinery, including the multisubunit Mediator complex, RNA polymerase II, and the general transcription factors ( 35, 89 ) ( Fig. 4B ).”

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Authors
Dilworth, F. J., & Chambon, P.
Affiliations
Centre National de la Recherche Scientifique (FR)
Venue
Oncogene
Published
2001-05-28
Volume
20
Issue
24
Pages
3047-3054
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2315037039
Cited by
269
References
83
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2023: 3 · 2022: 6 · 2021: 2 · 2020: 3 · 2019: 8 · 2018: 6 · 2017: 7 · 2016: 10 · 2015: 13 · 2014: 9 · 2013: 9 · 2012: 10
FWCI
1.58
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
nuclear receptors, chromatin remodeling, transcriptional coactivator, transcription initiation, in vitro transcription system, chromatin assembly
MeSH terms
Animals, Chromatin, Humans, Models, Biological, Transcription, Genetic, Trans-Activators, Receptors, Cytoplasmic and Nuclear

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