Cited by 82Genomics and Chromatin DynamicsEpigenetics and DNA MethylationCancer-related gene regulation

Direct association between PU.1 and MeCP2 that recruits mSin3A-HDAC complex for PU.1-mediated transcriptional repression

Suzuki, Mitsuhiro, Yamada, Toshiyuki, Kihara-Negishi, Fumiko, Sakurai, Takuya, Oikawa, Tsuneyuki·2003·Oncogene

Abstract

PU.1, a member of the Ets family of transcription factors, is implicated in hematopoietic cell differentiation through its interactions with other transcriptional factors and cofactors. To identify a novel protein(s) binding to PU.1, we carried out affinity purification using a column of Glutathione-Sepharose beads bound to GST-PU.1 fusion protein and isolated several individual proteins using murine erythroleukemia (MEL) cell extracts. Sequence analysis of these proteins revealed that one was MeCP2 a methyl CpG binding protein. GST-pull-down assay and immunoprecipitation assay showed that PU.1 bound directly to MeCP2 via its Ets domain and MeCP2 bound to PU.1 via either its amino terminal domain or trans-repression domain. MeCP2 repressed transcriptional activity of PU.1 on a reporter construct with trimerized PU.1 binding sites. This downregulation was recovered in the presence of histone deacetylase inhibitor, trichostatin A (TSA). MeCP2 was integrated in PU.1-mSin3A-HDAC complex but not in PU.1-CBP complex. Chromatin immunoprecipitation (ChIP) assays showed that PU.1 and MeCP2 were collocated at the PU.1 binding site on the reporter construct and the PU.1 binding site of the intervening sequence 2 (IVS2) region in the intron of the beta-globin gene, which has been proposed to regulate expression of the gene, in undifferentiated MEL cells. The complex disappeared from the region during the course of erythroid differentiation of MEL cells. Our results suggest that MeCP2 acts as a corepressor of PU.1 probably due to facilitating complex formation with mSin3A and HDACs.

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Crossref · 10.1038/sj.onc.1207182

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43 of 43 references verified0 citation errors · 0 not checkable

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  • Association between PU.1 and this repressive complex has previously been suggested to represent an endogenous defense mechanism in erythroid cells that restricts leukemia-associated gene expression and survival.

    “Association between PU.1 and this repressive complex has previously been suggested to represent an endogenous defense mechanism in erythroid cells that restricts leukemia-associated gene expression and survival (Gregoricchio et al., 2022; Suzuki et al., 2003).”
  • There is limited understanding of the mechanisms that determine coactivator versus corepressor recruitment by RUNX1 and PU.1.

    “There is limited understanding of the mechanisms that determine coactivator versus corepressor recruitment by RUNX1 and PU.1.17–20”

    From RUNX1 regulates corepressor interactions of PU.1 (2011) · cites this paper as [17]

  • PU.1 can interact with coactivators or corepressors to function as either a transcriptional activator or a transcriptional repressor.

    “PU.1 can interact with coactivators or corepressors to function as either a transcriptional activator or a transcriptional repressor.17–19”

    From RUNX1 regulates corepressor interactions of PU.1 (2011) · cites this paper as [17]

  • The mechanisms that regulate corepressor versus coactivator interactions of RUNX1 and PU.1 are incompletely understood.

    “However, the mechanisms that regulate corepressor versus coactivator interactions of RUNX1 and PU.1 are incompletely understood.17–20”

    From RUNX1 regulates corepressor interactions of PU.1 (2011) · cites this paper as [17]

  • PU.1 is a transcription repressor that interacts with the Il10 promoter.

    “PU.1 is a transcription repressor that interacts with the Il10 promoter27,28.”

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Authors
Suzuki, M., Yamada, T., Kihara-Negishi, F., Sakurai, T., & Oikawa, T.
Affiliations
Sasaki Institute (JP)
Corresponding author
Oikawa, Tsuneyuki
Venue
Oncogene
Published
2003-11-27
Volume
22
Issue
54
Pages
8688-8698
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2019393914
Cited by
82
References
43
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 5 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 4 · 2014: 3 · 2013: 4 · 2012: 4
FWCI
1.08
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer-related gene regulation
Keywords
PU.1, MeCP2, mSin3A, histone deacetylase, transcriptional repression, corepressors, ETS transcription factors, methyl-CpG binding proteins
MeSH terms
Proto-Oncogene Protein Spi-1, Cell Differentiation, Chromosomal Proteins, Non-Histone, DNA-Binding Proteins, Leukemia, Erythroblastic, Acute, Histone Deacetylases

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