Cited by 1,022Psoriasis: Treatment and PathogenesisT-cell and B-cell ImmunologyCytokine Signaling Pathways and Interactions

Induction of pathogenic TH17 cells by inducible salt-sensing kinase SGK1

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Wu, Chuan, Yosef, Nir, Thalhamer, Theresa, Zhu, Chen, Xiao, Sheng, Kishi, Yasuhiro, Regev, Aviv, Kuchroo, Vijay K.·2013·Nature

Abstract

TH17 cells (interleukin-17 (IL-17)-producing helper T cells) are highly proinflammatory cells that are critical for clearing extracellular pathogens and for inducing multiple autoimmune diseases. IL-23 has a critical role in stabilizing and reinforcing the TH17 phenotype by increasing expression of IL-23 receptor (IL-23R) and endowing TH17 cells with pathogenic effector functions. However, the precise molecular mechanism by which IL-23 sustains the TH17 response and induces pathogenic effector functions has not been elucidated. Here we used transcriptional profiling of developing TH17 cells to construct a model of their signalling network and nominate major nodes that regulate TH17 development. We identified serum glucocorticoid kinase 1 (SGK1), a serine/threonine kinase, as an essential node downstream of IL-23 signalling. SGK1 is critical for regulating IL-23R expression and stabilizing the TH17 cell phenotype by deactivation of mouse Foxo1, a direct repressor of IL-23R expression. SGK1 has been shown to govern Na(+) transport and salt (NaCl) homeostasis in other cells. We show here that a modest increase in salt concentration induces SGK1 expression, promotes IL-23R expression and enhances TH17 cell differentiation in vitro and in vivo, accelerating the development of autoimmunity. Loss of SGK1 abrogated Na(+)-mediated TH17 differentiation in an IL-23-dependent manner. These data demonstrate that SGK1 has a critical role in the induction of pathogenic TH17 cells and provide a molecular insight into a mechanism by which an environmental factor such as a high salt diet triggers TH17 development and promotes tissue inflammation.

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  • Extracellular salt (NaCl) can influence TH17 homeostasis, and short-chain fatty acids can influence Treg homeostasis.

    “Added to this are recent results indicating that extracellular salt (NaCl) (37, 38) and short-chain fatty acids (39) can influence TH17 and Treg homeostasis, respectively.”

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Authors
Wu, C., Yosef, N., Thalhamer, T., Zhu, C., Xiao, S., Kishi, Y., Regev, A., & Kuchroo, V. K.
Affiliations
  • Brigham and Women's Hospital (US)
  • Broad Institute (US)
Corresponding author
  • Regev, Aviv
  • Kuchroo, Vijay K.
Venue
Nature
Published
2013-03-06
Volume
496
Issue
7446
Pages
513-517
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2112837750
Cited by
1,022
References
40
Citations by year
2026: 36 · 2025: 50 · 2024: 71 · 2023: 67 · 2022: 82 · 2021: 77 · 2020: 92 · 2019: 85 · 2018: 78 · 2017: 89 · 2016: 84 · 2015: 80 · 2014: 82 · 2013: 47 · 2012: 1
FWCI
53.97
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (DP1OD003958)
  • National Human Genome Research Institute (P01HG005062, P50HG006193)
  • National Cancer Institute (DP1CA174427)
  • National Institute of Allergy and Infectious Diseases (P01AI045757, P01AI073748, AI073748, AI045757)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K01DK090105)
  • National Institute of Neurological Disorders and Stroke (R01NS030843, R29NS030843, NS030843, NS045937, R37NS030843, R01NS045937)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
SGK1, Th17 cells, IL23R, high-salt diet, NFAT5, p38 MAPK, FOXO1, experimental autoimmune encephalomyelitis, autoimmunity, CD4+ T cells, IL-17, gene expression profiling, gene regulatory networks, salt intake, neuroinflammation, salt sensing
MeSH terms
Forkhead Box Protein O1, Serum-Glucocorticoid Regulated Kinases, Animals, Cell Differentiation, Encephalomyelitis, Autoimmune, Experimental, Humans, Interferon-gamma, Phenotype, Phosphorylation, Sodium Chloride, Protein Serine-Threonine Kinases, Sodium Chloride, Dietary, Immediate-Early Proteins, Receptors, Interleukin, Interleukin-17, Mice, Forkhead Transcription Factors, HEK293 Cells, Th17 Cells

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