Cited by 268Cytokine Signaling Pathways and Interactionsinterferon and immune responsesGenomics and Chromatin Dynamics

Stat1 Depends on Transcriptional Synergy with Sp1

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Look, Dwight C., Pelletier, Mark R., Tidwell, Rose M., Roswit, William T., Holtzman, Michael J.·1995·Journal of Biological Chemistry

Abstract

STAT (signal transducer and activator of transcription) proteins combine with cytokine receptors and receptor-associated kinases in distinct protein/protein interactions that are critical for STAT-dependent signal transduction events, but the nature of any subsequent STAT interactions with DNA-binding proteins in the nucleus is less certain. Based on assays of DNA/protein binding and activity of transfected reporter plasmids, we determined that occupation of contiguous DNA-binding sites for Stat1 (the first member of the STAT family) and the transcriptional activator Sp1 are both required for full activation of the intercellular adhesion molecule-1 gene by interferon-gamma. Thus, Stat1 binding to DNA cannot by itself be equated with biologic actions of Stat1. In co-immunoprecipitation experiments, we also obtained evidence of direct and selective Stat1/Sp1 interaction (in primary culture cells without overexpression), further indicating that Stat1/Sp1 synergy confers an element of specificity in the pathway leading to cytokine-activated transcription and cytokine-dependent immunity and inflammation.

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Crossref · 10.1074/jbc.270.51.30264

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  • Although STATs bind a similar DNA binding site, they may interact with co-activators or co-repressors to regulate different sets of their own downstream targets.

    “Although they bind to a similar DNA binding site, STATs may interact with co-activator or co-repressor to regulate different sets of their own downstream targets (5”

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Authors
Look, D. C., Pelletier, M. R., Tidwell, R. M., Roswit, W. T., & Holtzman, M. J.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Holtzman, Michael J.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1995-12
Volume
270
Issue
51
Pages
30264-30267
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2129362876
Cited by
268
References
36
Citations by year
2026: 1 · 2025: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 3 · 2014: 1 · 2013: 2 · 2012: 5
FWCI
8.74
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01hl040078-10)
  • National Heart, Lung, and Blood Institute (HL-40078, HL 07317, HL/AI-51071, T32HL007317)
Topics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
STAT1, Sp1, transcriptional synergy, interferon-gamma, DNA binding sites, transcriptional activation, cytokine signaling
MeSH terms
Animals, Base Sequence, Binding Sites, Cell Line, DNA-Binding Proteins, Humans, Interferon-gamma, Luciferases, Molecular Sequence Data, Oligodeoxyribonucleotides, Recombinant Fusion Proteins, Recombinant Proteins, Repetitive Sequences, Nucleic Acid, Transcription, Genetic, Transfection, Signal Transduction, Chloramphenicol O-Acetyltransferase, Trans-Activators, Gene Expression, Polymerase Chain Reaction, Intercellular Adhesion Molecule-1, STAT1 Transcription Factor

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