Cited by 1,466Psoriasis: Treatment and PathogenesisT-cell and B-cell ImmunologyCytokine Signaling Pathways and Interactions

Essential autocrine regulation by IL-21 in the generation of inflammatory T cells

Nurieva, Roza, Yang, Xuexian O., Martinez, Gustavo, Zhang, Yongliang, Panopoulos, Athanasia D., Ma, Li, Schluns, Kimberly, Tian, Qiang +3 more·2007·Nature

Abstract

After activation, CD4+ helper T (T(H)) cells differentiate into distinct effector subsets that are characterized by their unique cytokine expression and immunoregulatory function. During this differentiation, T(H)1 and T(H)2 cells produce interferon-gamma and interleukin (IL)-4, respectively, as autocrine factors necessary for selective lineage commitment. A distinct T(H) subset, termed T(HIL-17), T(H)17 or inflammatory T(H) (T(H)i), has been recently identified as a distinct T(H) lineage mediating tissue inflammation. T(H)17 differentiation is initiated by transforming growth factor-beta and IL-6 (refs 5-7) and reinforced by IL-23 (ref. 8), in which signal transduction and activators of transcription (STAT)3 and retinoic acid receptor-related orphan receptor (ROR)-gamma mediate the lineage specification. T(H)17 cells produce IL-17, IL-17F and IL-22, all of which regulate inflammatory responses by tissue cells but have no importance in T(H)17 differentiation. Here we show that IL-21 is another cytokine highly expressed by mouse T(H)17 cells. IL-21 is induced by IL-6 in activated T cells, a process that is dependent on STAT3 but not ROR-gamma. IL-21 potently induces T(H)17 differentiation and suppresses Foxp3 expression, which requires STAT3 and ROR-gamma, which is encoded by Rorc. IL-21 deficiency impairs the generation of T(H)17 cells and results in protection against experimental autoimmune encephalomyelitis. IL-21 is therefore an autocrine cytokine that is sufficient and n…

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Crossref · 10.1038/nature05969

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Authors
Nurieva, R., Yang, X. O., Martinez, G., Zhang, Y., Panopoulos, A. D., Ma, L., Schluns, K., Tian, Q., Watowich, S. S., Jetten, A. M., & Dong, C.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • Institute for Systems Biology (US)
  • National Institutes of Health (US)
Corresponding author
  • Nurieva, Roza
  • Dong, Chen
Venue
Nature
Published
2007-06-20
Volume
448
Issue
7152
Pages
480-483
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2155013311
Cited by
1,466
References
4
Citations by year
2026: 25 · 2025: 20 · 2024: 19 · 2023: 40 · 2022: 39 · 2021: 47 · 2020: 39 · 2019: 53 · 2018: 53 · 2017: 68 · 2016: 62 · 2015: 83 · 2014: 88 · 2013: 90 · 2012: 96
FWCI
61.19
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
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
IL-21, autocrine cytokine signaling, T cell differentiation, STAT3, RORγ, Foxp3, interleukin-6, experimental autoimmune encephalomyelitis, inflammatory T cells, IL-23, RORC
MeSH terms
Interleukin-21, Animals, Cell Differentiation, Gene Expression Regulation, T-Lymphocytes, Helper-Inducer, Inflammation, Interleukins, Lymphocyte Activation, Receptors, Thyroid Hormone, Interleukin-6, Receptors, Retinoic Acid, Autocrine Communication, Interleukin-17, STAT3 Transcription Factor, Mice, Forkhead Transcription Factors, Nuclear Receptor Subfamily 1, Group F, Member 3

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