Cited by 1,595T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisCancer, Hypoxia, and Metabolism

The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index; none of the 33 sources its claims cite is checked for support yet.

Control of TH17/Treg Balance by Hypoxia-Inducible Factor 1

Open access

Abstract

T cell differentiation into distinct functional effector and inhibitory subsets is regulated, in part, by the cytokine environment present at the time of antigen recognition. Here, we show that hypoxia-inducible factor 1 (HIF-1), a key metabolic sensor, regulates the balance between regulatory T cell (T(reg)) and T(H)17 differentiation. HIF-1 enhances T(H)17 development through direct transcriptional activation of RORγt and via tertiary complex formation with RORγt and p300 recruitment to the IL-17 promoter, thereby regulating T(H)17 signature genes. Concurrently, HIF-1 attenuates T(reg) development by binding Foxp3 and targeting it for proteasomal degradation. Importantly, this regulation occurs under both normoxic and hypoxic conditions. Mice with HIF-1α-deficient T cells are resistant to induction of T(H)17-dependent experimental autoimmune encephalitis associated with diminished T(H)17 and increased T(reg) cells. These findings highlight the importance of metabolic cues in T cell fate determination and suggest that metabolic modulation could ameliorate certain T cell-based immune pathologies.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

HIF-1α promotes TH17 differentiation by directly activating RORγt and cooperating with RORγt/p300 at IL-17A, while simultaneously attenuating Treg differentiation by targeting Foxp3 for proteasomal degradation. Mice with HIF-1α-deficient T cells are resistant to TH17-dependent EAE and show diminished TH17 and increased Treg responses.

Key findings

  • HIF-1α expression is induced under TH17-skewing conditions in a Stat3-dependent manner; HIF-1α−/− T cells show minimal induction of IL-17A and RORγt transcripts and reduced IL-17A+ cells, with a dramatic increase in Foxp3+ cells.
  • HIF-1α directly transactivates RORγt through a conserved HRE. RORγt overexpression induced IL-17A in 45.7% of HIF-1α+/+ T cells versus 0.72% with control retrovirus, but only 1.33% in HIF-1α−/− T cells. HIF-1α, RORγt, and p300 co-localize at IL-17A, IL-17F, and IL-23R promoters; triple co-expression increased IL-17A reporter activity more than 10-fold over any two factors, and hypoxia further enhanced IL-17A production.
  • HIF-1α binds Foxp3 and mediates its ubiquitination and proteasomal degradation without changing Foxp3 mRNA; HIF-1α−/− T cells have higher Foxp3 protein under both TH17- and Treg-skewing conditions, and hypoxia decreases Foxp3+ cells. Degradation is blocked by proteasome inhibition and requires PHD2/proline hydroxylation of HIF-1α.
  • In EAE, WT mice developed disease while T-HIF-1α−/− mice were highly resistant; at peak disease, WT lymph node, spleen, and CNS CD4+ T cells had higher IL-17+ proportions, and at day 21 T-HIF-1α−/− mice showed increased Foxp3+ and decreased IL-17+ CD4+ cells.

Methods

  • Mice included T cell-specific HIF-1α knockout (CD4cre × HIF-1αflox/flox, T-HIF-1−/−), WT, Foxp3-GFP, and Rorc−/− mice. Naïve T cells were sorted and cultured under TH17, Treg, TH1, or TH2 conditions; hypoxia experiments used 1% O2.
  • Molecular analyses included qRT-PCR, ChIP, luciferase reporter assays, co-immunoprecipitation, GST pull-down, Western blotting, and ubiquitination assays. EAE was induced with MOG35–55 in CFA plus pertussis toxin, with daily disease scoring.
  • Statistical significance was determined by unpaired Student’s t test (*p<0.05).

Limitations

  • The paper states that future studies are needed to delineate precisely how HIF-1α protein turnover dynamics in T cells modulate Foxp3 levels.
  • The paper discusses a discrepancy with prior work suggesting HIF-1α is a general negative regulator of T cell activation, arguing that those experiments did not evaluate specific T cell differentiation decisions.
  • Evident from the text: much of the mechanistic dissection relies on overexpression in Jurkat/293T cells and reporter assays, and the in vivo validation is limited to the MOG35–55 EAE model; no human data are presented.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.cell.2011.07.033

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 33 cited sources checked · 0 supported · 0 flagged

Show all 98 claims

  • It may state two separate claims as one. 18
  • Probably not a substantial claim. 15
29 of 29
  • The paper relies on this without support.

    p300 is critical for HIF-1α-mediated gene activation under hypoxic conditions.

    “Because it has been shown that the transcription factor p300 is critical for HIF-1α-mediated gene activation under hypoxic conditions, we hypothesized that HIF-1α might function in a complex with RORγt by recruiting p300 to activate target genes such as IL-17A.”
  • The paper relies on this without support.

    Inflammatory environments are relatively hypoxic.

    “a number of studies have demonstrated that inflammatory environments are, relatively hypoxic.”
  • The paper relies on this without support.

    TH17 cells are the major pathogenic population in experimental autoimmune encephalomyelitis (EAE), a mouse model of multiple sclerosis.

    “TH17 cells are the major pathogenic population in experimental autoimmune encephalomyelitis (EAE), a mouse model of multiple sclerosis, although factors besides IL-17A and IL-17F can contribute to the disease.”
  • The paper relies on this without support.

    Immunization of B6 mice with MOG35–55 in complete Freund’s adjuvant (CFA) induces a TH17-dependent response that induces encephalitis.

    “Immunization of B6 mice with myelin oligodendrocyte glycoprotein peptide (MOG35–55) in complete Freund’s adjuvant (CFA) induces a TH17-dependent response that induces encephalitis.”
  • The paper relies on this without support.

    After a peak of encephalitis, the disease remits, concomitant with expansion of Tregs that can silence the TH17 encephalitic process.

    “After a peak of encephalitis, clinically discernible by various gradable neurologic signs (including tail paralysis, progressing to hind and front limb paralysis) the disease remits, concomitant with expansion of Tregs that can silence the TH17 encephalitic process.”
5 of 5

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Citations

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Show all 49 references

Research works printed but not linked: 4

  1. Harris, T.J., Grosso, J.F., Yen, H.R., Xin, H., Kortylewski, M., Albesiano, E., Hipkiss, E.L., Getnet, D., Goldberg, M.V., Maris, C.H., et al. (2007). Cutting edge: An in vivo requirement for STAT3 signaling in TH17 development and TH17-dependent autoimmunity. J. Immunol. 179, 4313–4317. · DOI
  2. Pan, F., Means, A.R., and Liu, J.O. (2005). Calmodulin-dependent protein kinase IV regulates nuclear export of Cabin1 during T-cell activation. EMBO J. 24, 2104–2113. · DOI
  3. Schraml, B.U., Hildner, K., Ise, W., Lee, W.L., Smith, W.A., Solomon, B., Sahota, G., Sim, J., Mukasa, R., Cemerski, S., et al. (2009). The AP-1 transcription factor Batf controls T(H)17 differentiation. Nature 460, 405–409. · DOI
  4. Wu, S., Rhee, K.J., Albesiano, E., Rabizadeh, S., Wu, X., Yen, H.R., Huso, D.L., Brancati, F.L., Wick, E., McAllister, F., et al. (2009). A human colonic commensal promotes colon tumorigenesis via activation of T helper type 17 T cell responses. Nat. Med. 15, 1016–1022. · DOI · Paper page

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Metadata

Authors
Dang, E. V., Barbi, J., Yang, H.-Y., Jinasena, D., Yu, H., Zheng, Y., Bordman, Z., Fu, J., Kim, Y., Yen, H.-R., Luo, W., Zeller, K., Shimoda, L., Topalian, S. L., Semenza, G. L., Dang, C. V., Pardoll, D. M., & Pan, F.
Affiliations
Johns Hopkins University (US)
Corresponding author
  • Pardoll, Drew M.
  • Pan, Fan
Venue
Cell
Publisher
Elsevier BV
Published
2011-09
Volume
146
Issue
5
Pages
772-784
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2134053452
Cited by
1,595
References
49
Citations by year
2026: 89 · 2025: 105 · 2024: 107 · 2023: 117 · 2022: 133 · 2021: 136 · 2020: 130 · 2019: 106 · 2018: 100 · 2017: 107 · 2016: 107 · 2015: 97 · 2014: 88 · 2013: 84 · 2012: 81
FWCI
36.88
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Alexander and Margaret Stewart Trust
  • Melanoma Research Alliance
  • Memorial Sloan-Kettering Cancer Center
  • Johns Hopkins University
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (R01AI089830)
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 › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
Keywords
HIF-1, HIF-1α, Th17 cells, regulatory T cells, T cell differentiation, RORγt, Foxp3, P300, proteasomal degradation, T cell metabolism, experimental autoimmune encephalitis, T cell fate determination
MeSH terms
Animals, Base Sequence, Encephalomyelitis, Autoimmune, Experimental, Humans, Molecular Sequence Data, Sequence Alignment, Jurkat Cells, Interleukin-17, T-Lymphocytes, Regulatory, STAT3 Transcription Factor, p300-CBP Transcription Factors, Mice, Hypoxia-Inducible Factor 1, Hypoxia-Inducible Factor 1, alpha Subunit, Forkhead Transcription Factors, Nuclear Receptor Subfamily 1, Group F, Member 3, Th17 Cells

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