Cited by 69interferon and immune responsesCytokine Signaling Pathways and InteractionsImmune Response and Inflammation

Modulation of interferon consensus sequence binding protein mRNA in murine peritoneal macrophages. Induction by IFN-gamma and down-regulation by IFN-alpha, dexamethasone, and protein kinase inhibitors

Politis, A D, Sivo, J, Driggers, P H, Ozato, K, Vogel, S N·1992·The Journal of Immunology

Abstract

IFN play a central role in the activation of macrophages by inducing the expression of several proteins which, in turn, result in increased functional capabilities. Homologous interferon responsive sequences have been found in many IFN-inducible genes, and the gene for a protein that binds these sequences (interferon consensus sequence binding protein, ICSBP) has recently been cloned. In this study, the regulation of ICSBP mRNA induction by IFN-gamma was characterized in murine thioglycolate-elicited peritoneal macrophages. Northern blot analysis revealed two ICSBP mRNA species from these cells. Steady-state levels of both of these species were elevated by IFN-gamma at doses consistent with many IFN-gamma-induced macrophage functional responses. ICSBP mRNA levels increased within 1 h of IFN-gamma treatment, peaked between 4 and 6 h, and subsequently declined to approach baseline levels by approximately 24 h. IFN-alpha, at a concentration shown previously to modulate macrophage surface markers and functions, had no effect on ICSBP message levels alone, but antagonized the IFN-gamma-induction of ICSBP mRNA. IFN-gamma-induction of ICSBP mRNA is resistant to cycloheximide but sensitive to protein kinase inhibitors (H7, H8, HA-1004, staurosporine) at doses that suggest that protein kinase C is a likely target. ICSBP mRNA induction is also inhibited by dexamethasone, a synthetic glucocorticoid, well known as an anti-inflammatory drug capable of influencing gene expression in macrophages. The characterization of ICSBP mRNA regulation should help identify functions for this putative IFN trans-acting factor in macrophage activation.

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Crossref · 10.4049/jimmunol.148.3.801

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  • ICSBP/IRF-8 is an IFN-γ-inducible transcription factor of the IRF family that regulates transcription through multiple target DNA elements, including ISRE, EICE, and GAS.

    “Interferon (IFN) consensus sequence binding protein (ICSBP)/IFN regulatory factor (IRF)-8 is an IFN g -inducible transcription factor of the IRF family and regulates transcription through multiple target DNA elements, such as IFN-stimulated response element (ISRE), Ets/IRF composite element, and IFNg activation site (GAS).”
  • ICSBP is expressed in hematopoietic cells, including monocyte/macrophage lineage, B lymphocytes, and activated T lymphocytes, and is inducible by IFN-γ in these cells.

    “ICSBP is expressed in the hematopoietic cells, including cells of the monocyte/macrophage lineage, B lymphocytes, and activated T lymphocytes, and is inducible by IFNg in these cells, suggesting its role in immune cells. (6,9-13)”

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Authors
Politis, A. D., Sivo, J., Driggers, P. H., Ozato, K., & Vogel, S. N.
Affiliations
Uniformed Services University of the Health Sciences (US)
Venue
The Journal of Immunology
Published
1992-02-01
Volume
148
Issue
3
Pages
801-807
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1534412053
Cited by
68
References
0
Citations by year
2025: 4 · 2024: 1 · 2021: 1 · 2020: 1 · 2018: 1 · 2017: 1 · 2015: 1 · 2014: 1
FWCI
2.58
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI-18797)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
interferon-gamma, interferon-alpha, peritoneal macrophages, macrophage activation, protein kinase C, protein kinase inhibitors, dexamethasone, glucocorticoids, cycloheximide, gene expression regulation, thioglycolate-elicited macrophages
MeSH terms
Interferon Regulatory Factor-8, Animals, Ascitic Fluid, Carrier Proteins, Dexamethasone, Dose-Response Relationship, Drug, Interferon-gamma, Macrophages, Recombinant Proteins, Repressor Proteins, RNA, Messenger, Gene Expression, Interferon-alpha, Protein Kinase Inhibitors, Interferon Regulatory Factors, Mice

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