Cited by 53Estrogen and related hormone effectsNuclear Receptors and SignalingGenomics and Chromatin Dynamics

Nuclear receptor superfamily: Principles of signaling

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Germain, Pierre, Altucci, Lucia, Bourguet, William, Rochette-Egly, C., Gronemeyer, Hinrich·2003·Pure and Applied Chemistry

Abstract

Nuclear receptors (NRs) comprise a family of 49 members that share a common structural organization and act as ligand-inducible transcription factors with major (patho)physiological impact. For some NRs (“orphan receptors”), cognate ligands have not yet been identified or may not exist. The principles of DNA recognition and ligand binding are well understood from both biochemical and crystal structure analyses. The 3D structures of several DNA-binding domains (DBDs),in complexes with a variety of cognate response elements, and multiple ligand-binding domains (LBDs), in the absence (apoLBD)and presence (holoLBD) of agonist, have been established and reveal canonical structural organization. Agonist binding induces a structural transition in the LBD whose most striking feature is the relocation of helix H12, which is required for establishing a coactivator complex, through interaction with members of the p160 family (SRC1, TIF2, AIB1) and/or the TRAP/DRIP complex. The p160-dependent coactivator complex is a multiprotein complex that comprises histone acetyltransferases (HATs), such as CBP,methyltransferases, such as CARM1, and other enzymes (SUMO ligase,etc.). The agonist-dependent recruitment of the HAT complex results in chromatin modification in the environment of the target gene promoters, which is requisite to, or may in some cases be sufficient for, transcription activation. In the absence of ligands, or in the presence of some antagonists, certain NRs are bound to distinct multiprotein complexes through the interaction with corepressors, such as NCoR and SMRT. Corepressor complexes comprise histone deacetylases (HDACs) that have the capacity to condense chromatin over target gene promoters. Ligands have been designed that selectively modulate the interaction between NRs and their coregulators. Both HATs and HDACs can also modify the acetylation status of nonhistone proteins, but the significance in the context of NR signaling is unclear. NRs communicate with other intracellular signaling pathways on a mutual basis, and their functionality may be altered, positively or negatively, by post-translational modification. The majority of NRs act as retinoid X receptor (RXR) heterodimers in which RXR cannot a priori respond autonomously to its cognate ligand to activate target gene transcription. This RXR subordination allows signaling pathway identity for the RXR partner. The corresponding mechanism is understood and reveals cell and NR selectivity, indicating that RXR can, under certain conditions, act autonomously. NRs are regulators of cell life and death,and NR malfunction can be at the basis of both disease and therapy, as is impressively documented in the case of acute promyelocytic leukemia. Recently, several pathways have been uncovered that link NR action with cell proliferation and apoptosis.

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Crossref · 10.1351/pac200375111619

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307 of 307 references verified0 citation errors · 0 not checkable

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  • RARs heterodimerized with RXRs bind to specific retinoic acid response elements (RARE) located in the promoters of target genes.

    “RARs heterodimerized with RXRs bind to specifi c retinoic acid response elements (RARE) located in the promoters of target genes.”
  • Classically, RAREs are composed of two direct repeats (DR) of a core hexameric motif (A/G)G(G/T)TCA separated by 1, 2, or 5 nucleotides and referred as DR1, DR2, and DR5.

    “Classically, RAREs are composed of two direct repeats (DR) of a core hexameric motif (A/G) G (G/T) TCA separated by 1, 2, or 5 nucleotides and referred as DR1, DR2, and DR5 ( 26, 76, 77 ) ( Fig. 3B ).”

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Authors
Germain, P., Altucci, L., Bourguet, W., Rochette-Egly, C., & Gronemeyer, H.
Affiliations
  • Institut de génétique et de biologie moléculaire et cellulaire (FR)
  • University of Campania "Luigi Vanvitelli" (IT)
  • Centre National de la Recherche Scientifique (FR)
  • 1IGBMC -B.P.10142, F-67404 Illkirch Cedex, C.U.de Strasbourg, France
Venue
Pure and Applied Chemistry
Published
2003-01-01
Volume
75
Issue
11-12
Pages
1619-1664
ISSN
  • 0033-4545 (ISSN-L)
  • 1365-3075
OpenAlex
W2134246871
Cited by
53
References
321
Citations by year
2025: 2 · 2024: 1 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 1 · 2017: 2 · 2015: 1 · 2014: 5 · 2013: 4 · 2012: 2
FWCI
1.25
Type
journal article
Language
en
Open access
Locations
  • Pure and Applied Chemistry (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
nuclear receptors, orphan receptors, ligand binding, DNA-binding domain, ligand-binding domain, p160 coactivators, histone acetyltransferase, histone deacetylase, corepressors, chromatin modification, nuclear receptor signaling

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