Cited by 173T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisCancer Immunotherapy and Biomarkers

Helios Controls a Limited Subset of Regulatory T Cell Functions

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Sebastian, Mathew, Lopez-Ocasio, Maria, Metidji, Amina, Rieder, Sadiye Amcaoglu, Shevach, Ethan M, Thornton, Angela M·2016·The Journal of Immunology

Abstract

A subpopulation (60–70%) of Foxp3+ regulatory T cells (Tregs) in both mouse and man expresses the transcription factor Helios, but its role in Treg function is still unknown. We generated Treg-specific Helios-deficient mice to examine the function of Helios in Tregs. We show that the selective deletion of Helios in Tregs leads to slow, progressive systemic immune activation, hypergammaglobulinemia, and enhanced germinal center formation in the absence of organ-specific autoimmunity. Helios-deficient Treg suppressor function was normal in vitro, as well as in an in vivo inflammatory bowel disease model. However, Helios-deficient Tregs failed to control the expansion of pathogenic T cells derived from scurfy mice, failed to mediate T follicular regulatory cell function, and failed to control both T follicular helper cell and Th1 effector cell responses. In competitive settings, Helios-deficient Tregs, particularly effector Tregs, were at a disadvantage, indicating that Helios regulates effector Treg fitness. Thus, we demonstrate that Helios controls certain aspects of Treg-suppressive function, differentiation, and survival.

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Crossref · 10.4049/jimmunol.1501704

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  • Acute pharmacological degradation of Helios recapitulates the phenotype of genetic loss of Ikzf2 in Tregs.

    “Notably, the preferential Helios degrader ALV2 destabilized the anergic phenotype of regulatory Tregs, consistent with previously reported phenotypes of Ikzf2−/− Tregs5,6,29, demonstrating that acute pharmacological degradation of Helios recapitulates the phenotype of genetic loss of Ikzf2 in Tregs.”

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Authors
Sebastian, M., Lopez-Ocasio, M., Metidji, A., Rieder, S. A., Shevach, E. M., & Thornton, A. M.
Affiliations
National Institutes of Health (US)
Corresponding author
Shevach, Ethan M
Venue
The Journal of Immunology
Published
2016-01-01
Volume
196
Issue
1
Pages
144-155
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2178643122
Cited by
172
References
46
Citations by year
2026: 9 · 2025: 15 · 2024: 6 · 2023: 19 · 2022: 10 · 2021: 22 · 2020: 14 · 2019: 29 · 2018: 22 · 2017: 13 · 2016: 13
FWCI
7.87
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (Z01AI000959)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
Helios, regulatory T cells, Foxp3, Treg suppressive function, systemic immune activation, hypergammaglobulinemia, germinal center formation, inflammatory bowel disease, scurfy mice, follicular regulatory T cells, T follicular helper cells
MeSH terms
Animals, Autoimmune Diseases, Cell Differentiation, Disease Models, Animal, DNA-Binding Proteins, Female, Hypergammaglobulinemia, Male, Mice, Inbred C57BL, Transcription Factors, Inflammatory Bowel Diseases, Autoimmunity, Mice, Knockout, Th1 Cells, Germinal Center, T-Lymphocytes, Regulatory, Mice, Ikaros Transcription Factor, Forkhead Transcription Factors

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