Cited by 251Psoriasis: Treatment and PathogenesisT-cell and B-cell ImmunologyMultiple Sclerosis Research Studies

Interleukin-17A Serves a Priming Role in Autoimmunity by Recruiting IL-1β-Producing Myeloid Cells that Promote Pathogenic T Cells

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McGinley, Aoife M., Sutton, Caroline E., Edwards, Sarah C., Leane, Charlotte M., DeCourcey, Joseph, Teijeiro, Ana, Hamilton, John A., Boon, Louis +2 more·2020·Immunity

Abstract

Interleukin-17A (IL-17A) is a major mediator of tissue inflammation in many autoimmune diseases. Anti-IL-17A is an effective treatment for psoriasis and is showing promise in clinical trials in multiple sclerosis. In this study, we find that IL-17A-defective mice or mice treated with anti-IL-17A at induction of experimental autoimmune encephalomyelitis (EAE) are resistant to disease and have defective priming of IL-17-secreting γδ T (γδT17) cells and Th17 cells. However, T cells from Il17a-/- mice induce EAE in wild-type mice following in vitro culture with autoantigen, IL-1β, and IL-23. Furthermore, treatment with IL-1β or IL-17A at induction of EAE restores disease in Il17a-/- mice. Importantly, mobilization of IL-1β-producing neutrophils and inflammatory monocytes and activation of γδT17 cells is reduced in Il17a-/- mice. Our findings demonstrate that a key function of IL-17A in central nervous system (CNS) autoimmunity is to recruit IL-1β-secreting myeloid cells that prime pathogenic γδT17 and Th17 cells.

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  1. Mangan, P.R., Harrington, L.E., O'Quinn, D.B., Helms, W.S., Bullard, D.C., Elson, C.O., Hatton, R.D., Wahl, S.M., Schoeb, T.R., and Weaver, C.T. (2006). Transforming growth factorb induces development of the T(H)17 lineage. Nature 441 , 231-234. http://refhub.elsevier.com/S1074-7613(2030029-7/sref36)

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Authors
McGinley, A. M., Sutton, C. E., Edwards, S. C., Leane, C. M., DeCourcey, J., Teijeiro, A., Hamilton, J. A., Boon, L., Djouder, N., & Mills, K. H. G.
Affiliations
  • Trinity College Dublin (IE)
  • Spanish National Cancer Research Centre (ES)
  • The Royal Melbourne Hospital (AU)
  • Polpharma Biologics (Netherlands) (NL)
Corresponding author
Mills, Kingston H.G.
Venue
Immunity
Publisher
Elsevier BV
Published
2020-02
Volume
52
Issue
2
Pages
342-356.e6
ISSN
1074-7613 (ISSN-L)
OpenAlex
W3005175144
Cited by
248
References
61
Citations by year
2026: 27 · 2025: 28 · 2024: 32 · 2023: 57 · 2022: 49 · 2021: 36 · 2020: 19
FWCI
14.24
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Arrow@dit (Dublin Institute of Technology) (submittedVersion, cc-by-nc-sa)
  • Trinity's Access to Research Output (TARA) (Trinity College Dublin) (submittedVersion)
Funders
Science Foundation Ireland
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 › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
Keywords
IL-17A, IL-1β, experimental autoimmune encephalomyelitis, central nervous system autoimmunity, γδT17 cells, Th17 cells, myeloid cells, neutrophils, inflammatory monocytes, IL-23, anti-IL-17A therapy, multiple sclerosis
MeSH terms
Intraepithelial Lymphocytes, Animals, Autoantigens, Central Nervous System, Encephalomyelitis, Autoimmune, Experimental, Mice, Inbred C57BL, Monocytes, Neutrophils, Autoimmunity, Mice, Knockout, Interleukin-17, Myeloid Cells, Mice, Interleukin-1beta, Interleukin-23, Th17 Cells

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