Cited by 61Immune Response and Inflammationinterferon and immune responsesCytokine Signaling Pathways and Interactions

Regulation of IFN Consensus Sequence Binding Protein Expression in Murine Macrophages

Kantakamalakul, Wannee, Politis, Alexander D, Marecki, Sylvia, Sullivan, Teri, Ozato, Keiko, Fenton, Matthew J, Vogel, Stefanie N·1999·The Journal of Immunology

Abstract

Recent work has demonstrated that the transcription factor, IFN consensus sequence binding protein (ICSBP), plays a critical role in the capacity of mice to control infection with Toxoplasma gondii and Leishmania major, agents that require highly activated macrophages for their elimination. In this report the regulation of ICSBP mRNA and protein were analyzed in murine macrophages stimulated with LPS and/or IFN-γ. Like induction of leishmaniacidal activity, LPS and IFN-γ synergize to induce ICSBP mRNA and protein. Deletion analysis of the ICSBP promoter identified regions that were IFN-γ responsive, regions that mediate the ability of LPS and IFN-γ to activate this promoter synergistically, as well as regions that normally repress ICSBP transcription. Finally, exogenous expression of ICSBP, found in previous studies to down-regulate MHC I gene expression, failed to repress basal or IFN-γ-induced ICSBP transcription. This demonstrates that ICSBP can selectively suppress the expression of IFN-responsive genes. These findings extend in a significant way our understanding of the regulation of ICSBP by LPS and IFN-γ and provide important clues as to its role in macrophage activation.

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Crossref · 10.4049/jimmunol.162.12.7417

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Authors
Kantakamalakul, W., Politis, A. D., Marecki, S., Sullivan, T., Ozato, K., Fenton, M. J., & Vogel, S. N.
Affiliations
  • Uniformed Services University of the Health Sciences (US)
  • Boston University (US)
  • National Institutes of Health (US)
Corresponding author
  • Kantakamalakul, Wannee
  • Sullivan, Teri
Venue
The Journal of Immunology
Published
1999-06
Volume
162
Issue
12
Pages
7417-7425
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1545447189
Cited by
61
References
54
Citations by year
2025: 4 · 2024: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2015: 3 · 2013: 1 · 2012: 2
FWCI
2.75
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01gm057053-04)
  • National Institute of General Medical Sciences (GM57053)
  • National Institute of Allergy and Infectious Diseases (AI-18797)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
IRF8, macrophages, macrophage activation, LPS, interferon-gamma, transcriptional regulation, promoter analysis, synergistic gene induction, MHC class I expression, Toxoplasma gondii, Leishmania major, innate immunity
MeSH terms
Interferon Regulatory Factor-8, Proto-Oncogene Protein Spi-1, Animals, Cell Line, DNA-Binding Proteins, Drug Synergism, Female, Gene Expression Regulation, Interferon-gamma, Lipopolysaccharides, Mice, Inbred C3H, Phosphoproteins, Promoter Regions, Genetic, Proto-Oncogene Proteins, Repressor Proteins, RNA, Messenger, Protein Biosynthesis, Trans-Activators, Consensus Sequence, Sequence Deletion, Macrophages, Peritoneal, Interferon Regulatory Factors, Interferon Regulatory Factor-1, Mice

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