Cited by 183interferon and immune responsesAcute Myeloid Leukemia ResearchImmunodeficiency and Autoimmune Disorders

The DOI matches its Crossref record; 72 of the 72 references it cites were found in a registry or an index; none of the 124 sources its claims cite is checked for support yet.

Review: ICSBP/IRF-8: Its Regulatory Roles in the Development of Myeloid Cells

Tamura, Tomohiko, Ozato, Keiko·2002·Journal of Interferon & Cytokine Research

Abstract

Interferon (IFN) consensus sequence binding protein (ICSBP)/IFN regulatory factor (IRF)-8 is an IFNgamma-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 IFN-gamma activation site (GAS). ICSBP(-/-) mice are immunodeficient and susceptible to various pathogens. They have defects in the macrophage function, including the ability to induce interleukin-12 (IL-12) p40 and some IFN-gamma-responsible genes. In addition, ICSBP(-/-) mice develop a chronic myelogenous leukemia (CML)-like syndrome, where a systemic expansion of granulocytes is followed by a fatal blast crisis. ICSBP(-/-) mice harbor an increased number of myeloid progenitor cells, and the -/- progenitors preferentially give rise to granulocytes, although they cannot efficiently generate another descendant of the myeloid lineage, macrophages. Studies with myeloid progenitor cells have shown that ICSBP drives their differentiation toward macrophage, whereas it inhibits granulocyte differentiation. Furthermore, myeloid cells from ICSBP(-/-) mice are resistant to apoptosis. These results illustrate the mechanism by which the loss of ICSBP leads to immunodeficiency and CML-like syndrome and suggest ICSBP's critical role in the development of myeloid cells.

Overview

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Written from the paper’s full text.

TL;DR

ICSBP/IRF-8 is an IFN-γ–inducible transcription factor of the IRF family that regulates myeloid cell development, acting as either a repressor or activator depending on the target DNA element. Loss of ICSBP in mice causes immunodeficiency (defective macrophage/IL-12 function) and a chronic myelogenous leukemia (CML)-like syndrome.

Key findings

  • ICSBP⁻/⁻ mice are immunodeficient and susceptible to pathogens controlled by type II IFN (vaccinia, lymphocytic choriomeningitis virus, *Listeria monocytogenes*, *Yersinia enterocolitica*, *Leishmania major*, *Toxoplasma gondii*), but survive vesicular stomatitis virus or influenza A.
  • ICSBP⁻/⁻ mice develop a CML-like syndrome: systemic expansion/infiltration of granulocytes (predominantly mature neutrophils) in essentially 100% of mice, with lymphadenopathy and hepatosplenomegaly; approximately 33% of ICSBP⁻/⁻ and 9% of ICSBP⁺/⁻ mice died by 50 weeks of age with features of blast crisis, including leukocytosis (>100,000/μl).
  • ICSBP directs myeloid progenitors toward macrophage differentiation and inhibits granulocyte growth/differentiation; ICSBP⁻/⁻ myeloid cells show reduced spontaneous apoptosis and reduced sensitivity to DNA-damage–induced apoptosis.
  • ICSBP activates IL-12 p40 transcription (via the Ets site, with IRF-1 synergy) and potentiates Stat1-dependent activation of IFN-γ–responsive GAS-containing promoters; ICSBP⁻/⁻ macrophages are defective in inducing FcγRI and iNOS.

Methods

  • Narrative review synthesizing published and unpublished work on ICSBP/IRF-8, its structure, target elements, interacting proteins, and role in myeloid development.
  • Evidence drawn from ICSBP⁻/⁻ and ICSBP⁺/⁻ mice, established ICSBP⁻/⁻ myeloid progenitor cell lines (e.g., Tot2), retroviral ICSBP transduction, colony-forming assays with GM-CSF/G-CSF/M-CSF, DNA affinity binding assays, and transfected luciferase reporters.
  • No new primary data or formal meta-analysis are presented; the paper is a synthesis of cited studies.

Limitations

  • Stated: many studies relied on activities of transfected reporters containing ISRE or EICE, so it remains important to determine whether ICSBP regulates endogenous genes through these elements; immediate target genes that trigger differentiation in progenitor cells have not been identified.
  • Stated: some cited observations are unpublished (e.g., ICSBP expression in Lin⁻ progenitors, additional IL-12 p40 promoter element, TEL interaction, dendritic cell maturation).
  • Evident from the text: as a review, conclusions depend on the cited primary studies, and several mechanistic claims (e.g., ICSBP–IRF-4 compensation) are proposed as possibilities rather than demonstrated.

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Integrity signals

Registry

Crossref · 10.1089/107999002753452755

Cites

72 of 72 references verified0 citation errors · 0 not checkable

Statistics

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Verification

Claims the paper makes

62 Not checked yet · 20 Own interpretation · 4 Own result · 2 No basis given

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Citations

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  1. LI W., 1999, Invest. Ophthalmol. Vis. Sci., 40, 976

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Metadata

Authors
Tamura, T., & Ozato, K.
Affiliations
National Institutes of Health (US)
Venue
Journal of Interferon & Cytokine Research
Published
2002-01
Volume
22
Issue
1
Pages
145-152
ISSN
  • 1079-9907 (ISSN-L)
  • 1557-7465
OpenAlex
W160560928
Cited by
183
References
72
Citations by year
2025: 2 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 4 · 2020: 3 · 2019: 7 · 2018: 3 · 2017: 12 · 2016: 6 · 2015: 6 · 2014: 13 · 2013: 7 · 2012: 7
FWCI
1.04
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Interferon & Cytokine Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
Keywords
interferon regulatory factors, myeloid cell development, macrophage differentiation, granulocytic differentiation, myeloid progenitor cells, immunodeficiency, apoptosis resistance
MeSH terms
Interferon Regulatory Factor-8, Animals, Cell Differentiation, Gene Expression Regulation, Humans, Phosphorylation, Repressor Proteins, Transcription Factors, Transcription, Genetic, Trans-Activators, Consensus Sequence, Apoptosis, Mice, Knockout, Myeloid Cells, Interferon Regulatory Factors, Mice

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