Cited by 349Genomics and Chromatin DynamicsHematopoietic Stem Cell TransplantationKruppel-like factors research

GATA-1 interacts with the myeloid PU.1 transcription factor and represses PU.1-dependent transcription

Nerlov, Claus, Querfurth, Erich, Kulessa, Holger, Graf, Thomas·2000·Blood

Abstract

The GATA-1 transcription factor is capable of suppressing the myeloid gene expression program when ectopically expressed in myeloid cells. We examined the ability of GATA-1 to repress the expression and function of the PU.1 transcription factor, a central regulator of myeloid differentiation. We found that GATA-1 is capable of suppressing the myeloid phenotype without interfering with PU.1 gene expression, but instead was capable of inhibiting the activity of the PU.1 protein in a dose-dependent manner. This inhibition was independent of the ability of GATA-1 to bind DNA, suggesting that it is mediated by protein-protein interaction. We examined the ability of PU.1 to interact with GATA-1 and found a direct interaction between the PU.1 ETS domain and the C-terminal finger region of GATA-1. Replacing the PU.1 ETS domain with the GAL4 DNA-binding domain removed the ability of GATA-1 to inhibit PU.1 activity, indicating that the PU.1 DNA-binding domain, rather than the transactivation domain, is the target for GATA-1–mediated repression. We therefore propose that GATA-1 represses myeloid gene expression, at least in part, through its ability to directly interact with the PU.1 ETS domain and thereby interfere with PU.1 function.

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Crossref · 10.1182/blood.v95.8.2543

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Authors
Nerlov, C., Querfurth, E., Kulessa, H., & Graf, T.
Affiliations
Albert Einstein College of Medicine (US)
Venue
Blood
Published
2000-04-15
Volume
95
Issue
8
Pages
2543-2551
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1504158565
Cited by
349
References
46
Citations by year
2026: 5 · 2025: 5 · 2024: 5 · 2023: 7 · 2022: 10 · 2021: 12 · 2020: 12 · 2019: 12 · 2018: 7 · 2017: 9 · 2016: 10 · 2015: 7 · 2014: 12 · 2013: 8 · 2012: 7
FWCI
7.57
Type
journal article
Language
en
Open access
closed
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Kruppel-like factors research
Keywords
GATA-1, PU.1, transcriptional repression, protein-protein interaction, ETS domain, myeloid differentiation, transcription factor interaction, DNA-binding domain
MeSH terms
Proto-Oncogene Protein Spi-1, Cell Differentiation, Cell Line, DNA-Binding Proteins, Gene Expression Regulation, Humans, Nuclear Proteins, Proto-Oncogene Proteins, Transcription Factors

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