Cited by 284Cytokine Signaling Pathways and Interactionsinterferon and immune responsesImmune Response and Inflammation

The DOI matches its Crossref record; 40 of the 41 references it cites were found in a registry or an index.

Phosphorylation of the Stat1 Transactivation Domain Is Required for Full-Fledged IFN-γ-Dependent Innate Immunity

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Abstract

Stat1 is phosphorylated on serine 727 within its transactivating domain (TAD) in response to interferons or other immunological signals. We generated gene-targeted mutant mice expressing a serine727-alanine mutant of Stat1. These animals showed increased mortality upon infection with Listeria monocytogenes and impaired clearance of the bacteria from spleen and liver. The Stat1S727A mice were more resistant to the LPS-induced septic shock syndrome, suggesting that Stat1 serine phosphorylation promotes inflammatory responses. Expression of IFN-gamma-induced genes was strongly reduced in macrophages expressing Stat1(S727A). While mutation of Stat1 at S727 did not reduce its binding to chromatin, association with the coactivator CBP and histone acetylation at the interferon-responsive GBP promoter was strongly reduced, suggesting defective recruitment of histone acetylases as the mechanism underlying IFN-gamma hyporesponsiveness. Our data demonstrate that the increase in transcription factor activity caused by Stat serine phosphorylation contributes to macrophage activation and to IFN-gamma-dependent immune responses in vivo.

Overview

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Crossref · 10.1016/s1074-7613(03)00322-4

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Metadata

Authors
Varinou, L., Ramsauer, K., Karaghiosoff, M., Kolbe, T., Pfeffer, K., Müller, M., & Decker, T.
Affiliations
  • University of Vienna (AT)
  • Heinrich Heine University Düsseldorf (DE)
Corresponding author
Decker, Thomas
Venue
Immunity
Publisher
Elsevier BV
Published
2003-12
Volume
19
Issue
6
Pages
793-802
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2087814657
Cited by
284
References
41
Citations by year
2026: 5 · 2025: 10 · 2024: 26 · 2023: 15 · 2022: 9 · 2021: 12 · 2020: 14 · 2019: 6 · 2018: 12 · 2017: 10 · 2016: 8 · 2015: 7 · 2014: 16 · 2013: 20 · 2012: 10
FWCI
6.61
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
STAT1, serine 727 phosphorylation, transactivation domain, interferon-gamma, innate immunity, Listeria monocytogenes infection, septic shock, macrophage activation, CBP, histone acetylation, transcriptional coactivator
MeSH terms
Animals, DNA-Binding Proteins, Immunity, Innate, Interferon-gamma, Lipopolysaccharides, Mice, Transgenic, Phosphorylation, Phosphotransferases, Serine, Shock, Septic, Trans-Activators, Amino Acid Substitution, STAT1 Transcription Factor, Mice

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