Cited by 104T-cell and B-cell ImmunologyGenomics and Chromatin DynamicsEpigenetics and DNA Methylation

Interleukin 2 gene transcription is regulated by Ikaros-induced changes in histone acetylation in anergic T cells

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Bandyopadhyay, Sanmay, Duré, Myrianne, Paroder, Monika, Soto-Nieves, Noemí, Puga, Irene, Macián, Fernando·2007·Blood

Abstract

In T cells anergy may be evoked by an unbalanced stimulation of the T-cell receptor in the absence of costimulation. Anergic T cells are unresponsive to new antigen receptor engagement and do not produce interleukin 2. We present evidence that anergizing stimuli induce changes in histone acetylation, which mediates transcriptional repression of interleukin 2 expression. In response to calcium signaling, anergic T cells up-regulate the expression of Ikaros, a zinc finger transcription factor essential for lymphoid lineage determination. Ikaros binds to the interleukin 2 promoter where it induces histone deacetylation. Confirming the role of Ikaros in the induction of T-cell anergy, cells with reduced Ikaros activity show defective inactivation in response to an anergizing stimulus. We propose a model in which tolerizing stimuli induce epigenetic changes on the interleukin 2 locus that are responsible for the stable inhibition of the expression of this cytokine in anergic T cells.

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Crossref · 10.1182/blood-2006-07-037754

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  • Epigenetic factors including IKAROS (via acetylation) and Sirt1 participate in histone modifications that promote T cell anergy.

    “Epigenetic factors such as IKAROS (through acetylation) [25] and Sirt1 are involved in histone modifications that promote T cell anergy [26,27].”

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Authors
Bandyopadhyay, S., Duré, M., Paroder, M., Soto-Nieves, N., Puga, I., & Macián, F.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Albert Einstein College of Medicine, Department of Pathology, Bronx, NY
Venue
Blood
Published
2006-12-05
Volume
109
Issue
7
Pages
2878-2886
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2053841483
Cited by
104
References
49
Citations by year
2026: 2 · 2025: 2 · 2024: 11 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 4 · 2019: 1 · 2018: 4 · 2017: 4 · 2016: 4 · 2015: 7 · 2014: 5 · 2013: 9 · 2012: 9
FWCI
2.40
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of General Medical Sciences (GM007288, GM007491, T32GM007491, T32GM007288)
  • National Institute of Allergy and Infectious Diseases (R56AI059738, AI059738, R01AI059738)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
interleukin-2, Ikaros, histone acetylation, histone deacetylation, T cell anergy, transcriptional repression, interleukin-2 promoter, calcium signaling, epigenetic regulation, zinc finger transcription factor, T cell tolerance, costimulation
MeSH terms
Acetylation, Animals, Histones, Humans, Interleukin-2, Lymphocyte Activation, Mice, Inbred C57BL, Promoter Regions, Genetic, T-Lymphocytes, Transcription, Genetic, Clonal Anergy, Th1 Cells, Models, Immunological, Jurkat Cells, Epigenesis, Genetic, Mice, Ikaros Transcription Factor, In Vitro Techniques

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