Cited by 196Genomics and Chromatin DynamicsDevelopmental Biology and Gene RegulationMuscle Physiology and Disorders

MEF‐2 function is modified by a novel co‐repressor, MITR

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Sparrow, Duncan B., Miska, Eric A., Langley, Emma, Reynaud‐Deonauth, Sorogini, Kotecha, Surendra, Towers, Norma, Spohr, Georges, Kouzarides, Tony +1 more·1999·The EMBO Journal

Abstract

The MEF-2 proteins are a family of transcriptional activators that have been detected in a wide variety of cell types. In skeletal muscle cells, MEF-2 proteins interact with members of the MyoD family of transcriptional activators to synergistically activate gene expression. Similar interactions with tissue or lineage-specific cofactors may also underlie MEF-2 function in other cell types. In order to screen for such cofactors, we have used a transcriptionally inactive mutant of Xenopus MEF2D in a yeast two-hybrid screen. This approach has identified a novel protein expressed in the early embryo that binds to XMEF2D and XMEF2A. The MEF-2 interacting transcription repressor (MITR) protein binds to the N-terminal MADS/MEF-2 region of the MEF-2 proteins but does not bind to the related Xenopus MADS protein serum response factor. In the early embryo, MITR expression commences at the neurula stage within the mature somites and is subsequently restricted to the myotomal muscle. In functional assays, MITR negatively regulates MEF-2-dependent transcription and we show that this repression is mediated by direct binding of MITR to the histone deacetylase HDAC1. Thus, we propose that MITR acts as a co-repressor, recruiting a specific deacetylase to downregulate MEF-2 activity.

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Crossref · 10.1093/emboj/18.18.5085

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  • A natural HDAC9 splice variant lacking the HDAC domain (MITR/HDRP) and analogous artificially truncated forms of other class IIa members retain full transcriptional repressive functions.

    “A natural HDAC9 splice variant lacking the HDAC domain [myocyte enhancer factor-2 interacting transcription repressor/HDAC-related protein (MITR/HDRP)] as well as analogous artificially truncated forms of other class IIa members retain full transcriptional repressive functions (16,17).”

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Authors
Sparrow, D. B., Miska, E. A., Langley, E., Reynaud‐Deonauth, S., Kotecha, S., Towers, N., Spohr, G., Kouzarides, T., & Mohun, T. J.
Affiliations
  • National Institute for Medical Research (GB)
  • University of Cambridge (GB)
  • University of Geneva (CH)
Corresponding author
Mohun, Timothy J.
Venue
The EMBO Journal
Published
1999-09-15
Volume
18
Issue
18
Pages
5085-5098
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2010466297
Cited by
196
References
70
Citations by year
2025: 3 · 2024: 4 · 2023: 5 · 2022: 1 · 2021: 4 · 2020: 7 · 2019: 2 · 2018: 3 · 2017: 5 · 2016: 8 · 2015: 6 · 2014: 6 · 2013: 1 · 2012: 4
FWCI
6.79
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Cancer Research Institute
  • Wellcome Trust
  • British Heart Foundation
  • Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
MEF2, corepressors, transcriptional repression, HDAC1, histone deacetylase, serum response factor, skeletal muscle development, early embryo, somites, myotomal muscle, transcriptional activator
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Carrier Proteins, DNA-Binding Proteins, Female, Histone Deacetylases, Humans, Molecular Sequence Data, Mutation, Repressor Proteins, Transcription Factors, Xenopus, Transcriptional Activation, Gene Expression, Sequence Homology, Amino Acid, In Situ Hybridization, Myogenic Regulatory Factors, DNA, Complementary, Muscle, Skeletal, Two-Hybrid System Techniques, MADS Domain Proteins, Xenopus Proteins, MEF2 Transcription Factors, In Vitro Techniques

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