Cited by 208Cancer, Hypoxia, and MetabolismT-cell and B-cell ImmunologySignaling Pathways in Disease

Cutting Edge: Hypoxia-Inducible Factor 1α and Its Activation-Inducible Short Isoform I.1 Negatively Regulate Functions of CD4+ and CD8+ T Lymphocytes

Lukashev, Dmitriy, Klebanov, Boris, Kojima, Hidefumi, Grinberg, Alex, Ohta, Akiko, Berenfeld, Ludmilla, Wenger, Roland H, Ohta, Akio +1 more·2006·The Journal of Immunology

Abstract

To evaluate the role of hypoxia-inducible factor 1α (HIF-1α) and its TCR activation-inducible short isoform I.1 in T cell functions, we genetically engineered unique mice with: 1) knockout of I.1 isoform of HIF-1α; 2) T cell-targeted HIF-1α knockdown; and 3) chimeric mice with HIF-1α gene deletion in T and B lymphocytes. In all three types of mice, the HIF-1α-deficient T lymphocytes, which were TCR-activated in vitro, produced more proinflammatory cytokines compared with HIF-1α-expressing control T cells. Surprisingly, deletion of the I.1 isoform, which represents <30% of total HIF-1α mRNA in activated T cells, was sufficient to markedly enhance TCR-triggered cytokine secretion. These data suggest that HIF-1α not only plays a critical role in oxygen homeostasis but also may serve as a negative regulator of T cells.

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Crossref · 10.4049/jimmunol.177.8.4962

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Authors
Lukashev, D., Klebanov, B., Kojima, H., Grinberg, A., Ohta, A., Berenfeld, L., Wenger, R. H., Ohta, A., & Sitkovsky, M.
Affiliations
  • Northeastern University (US)
  • Dokkyo University (JP)
  • National Institutes of Health (US)
  • University of Zurich (CH)
Venue
The Journal of Immunology
Published
2006-10
Volume
177
Issue
8
Pages
4962-4965
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2155662291
Cited by
208
References
31
Citations by year
2026: 5 · 2025: 4 · 2024: 12 · 2023: 10 · 2022: 7 · 2021: 10 · 2020: 13 · 2019: 13 · 2018: 6 · 2017: 6 · 2016: 13 · 2015: 11 · 2014: 11 · 2013: 11 · 2012: 21
FWCI
4.64
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
Keywords
hypoxia-inducible factor-1α, T cell activation, CD4+ T cells, CD8+ T cells, proinflammatory cytokine production, T cell homeostasis, oxygen homeostasis
MeSH terms
Animals, Lymphocyte Activation, Receptors, Antigen, T-Cell, RNA, Messenger, CD4-Positive T-Lymphocytes, Cytokines, Mice, Knockout, CD8-Positive T-Lymphocytes, Protein Isoforms, Mice, Hypoxia-Inducible Factor 1, alpha Subunit

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