Cited by 94T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisIL-33, ST2, and ILC Pathways

Regulatory T cells inhibit acute IFN-γ synthesis without blocking T-helper cell type 1 (Th1) differentiation via a compartmentalized requirement for IL-10

Open access
Sojka, Dorothy K., Fowell, Deborah J.·2011·Proceedings of the National Academy of Sciences

Abstract

CD4 + CD25 + Forkhead box P3 (Foxp3) + regulatory T cells (Tregs) control immune responses to self and foreign antigens in secondary lymphoid organs and at tissue sites of inflammation. Tregs can modify the function of many immune cells and have been proposed to block early proliferation, differentiation, and effector function. Acute ablation of Tregs has revealed rapid cytokine production immediately after Treg removal, suggesting that Tregs may regulate effector function acutely rather than regulating the programming for immune function. We developed in vitro and in vivo models that enabled the direct test of Treg regulation of T-helper cell type 1 (Th1) differentiation. CD28 signaling is known to abrogate Treg suppression of IL-2 secretion and proliferation, but our studies show that Treg suppression of IFN-γ during Th1 priming proceeds despite enhanced CD28 signaling. Importantly, during Th1 differentiation, Tregs inhibited early IFN-γ transcription without disrupting expression of Th1-specific T-box transcription factor (Tbet) and Th1 programming. Acute shutoff of effector cytokine production by Tregs was selective for IFN-γ but not TNF-α and was independent of TGF-β and Epstein-Barr virus-induced gene 3. In vivo, Tregs potently controlled CD4 IFN-γ and CD4 effector cell expansion in the lymph node (four- to fivefold reduction) but not Th1 programming, independent of IL-10. Tregs additionally reduced CD4 IFN-γ in the inflamed dermis (twofold reduction) dependent on their production of IL-10. We propose a model for Treg inhibition of effector function based on acute cytokine regulation. Interestingly, Tregs used different regulatory mechanisms to regulate IFN-γ (IL-10–dependent or –independent) subject to the target T-cell stage of activation and its tissue location.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.1110566108

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Treg depletion is expected to promote a chronic low-grade inflammatory milieu characterized by elevated interferon γ, and such a cytokine environment is well-suited to sustain T-bet+ ABC-like populations.

    “their depletion is expected to promote a chronic low-grade inflammatory milieu characterized by elevated interferon γ [69], such a cytokine environment is well-suited to sustain T-bet+ ABC-like populations [70].”

    From PLCγ2 deficiency compromises systemic immune tolerance and erodes myelin homeostasis while enhancing oxidative metabolism in the mouse brain (2026) · cites this paper as [69]

    The Abstract and Discussion report that Tregs suppress IFN-γ and that IFN-γ can be produced rapidly after Treg depletion. They address acute cytokine regulation, not a chronic low-grade inflammatory milieu. The ABC-like population claim is attached to a different citation and is not assessed here. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Sojka, D. K., & Fowell, D. J.
Affiliations
University of Rochester Medicine (US)
Venue
Proceedings of the National Academy of Sciences
Published
2011-10-24
Volume
108
Issue
45
Pages
18336-18341
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2077926649
Cited by
93
References
41
Citations by year
2026: 3 · 2025: 8 · 2024: 7 · 2023: 4 · 2022: 3 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 3 · 2017: 7 · 2016: 4 · 2015: 4 · 2014: 12 · 2013: 10 · 2012: 10
FWCI
4.52
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (R01AI070826)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Life Sciences › Immunology and Microbiology › Immunology › IL-33, ST2, and ILC Pathways
Keywords
regulatory T cells, Foxp3, interferon-gamma, Th1 differentiation, IL-10, CD28 signaling, Treg suppressive function, cytokine regulation, T-bet, CD4+ T cells, lymph nodes, TNF-α, TGF-beta
MeSH terms
Animals, Cell Compartmentation, Cell Differentiation, Flow Cytometry, T-Lymphocytes, Helper-Inducer, Interferon-gamma, Mice, Inbred BALB C, Mice, Inbred C57BL, Interleukin-10, Cell Lineage, T-Lymphocytes, Regulatory, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review