Cited by 65Genomics and Chromatin DynamicsHistone Deacetylase Inhibitors ResearchEpigenetics and DNA Methylation

In vivo complex formation of PU.1 with HDAC1 associated with PU.1-mediated transcriptional repression

Kihara-Negishi, Fumiko, Yamamoto, Hitomi, Suzuki, Mitsuhiro, Yamada, Toshiyuki, Sakurai, Takuya, Tamura, Takaaki, Oikawa, Tsuneyuki·2001·Oncogene

Abstract

We previously reported that overexpression of PU.1, a member of the Ets family of transcription factors, induces differentiation inhibition and apoptosis associated with c-Myc down-regulation in murine erythroleukemia (MEL) cells. To understand the molecular mechanism by which c-Myc is down-regulated due to overexpression of PU.1, we performed luciferase reporter assays using the mouse c-myc promoter. PU.1 repressed the activities of not only the c-myc promoter but also several other promoters. Experiments with deletion mutants of PU.1 revealed that the C-terminal region spanning amino acids (aa) 123-272 including the PEST and ETS domains but not the activation domain was sufficient for this transcriptional repression. It was unlikely that the repression was due to sequestration of a limited amount of CBP/p300 nor pCAF, because overexpression of these co-activators did not relieve PU.1-mediated transcriptional repression. Instead, it was found that the C-terminal aa 101-272 of PU.1 formed a complex with mSin3A and HDAC1 in vivo, which was speculated to be associated with the repression. The C-terminal region of PU.1 also formed a complex with the basic transcription factor TBP in vitro and in vivo. Our results suggest that overexpression of PU.1 induces transcriptional repression in several gene promoters including the c-myc promoter which may be mediated by its complex formation with HDACs.

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Crossref · 10.1038/sj.onc.1204756

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49 of 49 references verified0 citation errors · 0 not checkable

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  • 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 [19]

  • 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 [19]

  • 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 [19]

  • Prior studies indicate that PU.1 can be recruited to the Myc promoter in complex with histone deacetylase proteins.

    “in line with prior studies indicating that PU.1 can be recruited to the Myc promoter in complex with histone deacetylase proteins (Kihara-Negishi et al., 2001).”

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Authors
Kihara-Negishi, F., Yamamoto, H., Suzuki, M., Yamada, T., Sakurai, T., Tamura, T., & Oikawa, T.
Affiliations
Sasaki Institute (JP)
Corresponding author
Oikawa, Tsuneyuki
Venue
Oncogene
Published
2001-09-20
Volume
20
Issue
42
Pages
6039-6047
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2335217055
Cited by
65
References
48
Citations by year
2022: 4 · 2021: 2 · 2020: 2 · 2019: 4 · 2018: 2 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 2
FWCI
1.76
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 › Histone Deacetylase Inhibitors Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
PU.1, HDAC1, transcriptional repression, ETS transcription factors, mSin3A, histone deacetylase, TATA-binding protein, c-myc promoter
MeSH terms
Proto-Oncogene Protein Spi-1, Cell Line, DNA-Binding Proteins, HeLa Cells, Histone Deacetylases, Humans, Mutation, Promoter Regions, Genetic, Proto-Oncogene Proteins

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