Article (Scientific journals)
CD109 Restrains Activation of Cutaneous IL-17-Producing γδ T Cells by Commensal Microbiota
Zhang, Hualin; Carnevale, Guistino; Polese, Barbara et al.
2019In Cell Reports, 29 (2)
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Abstract :
[en] Interleukin-17-producing γδ T (γδ17) cells play a central role in protective and pathogenic immune responses. However, the tissue-specific mechanisms that control the activation of these innate lymphocytes are not known. Here, we demonstrate that CD109, a glycosylphosphatidylinositol (GPI)-anchored protein highly expressed by keratinocytes, is an important regulator of skin homeostasis and γδ17 cell activation. Genetic deletion of CD109 results in spontaneous epidermal hyperplasia, aberrant accumulation of dermal-derived γδ17 cells, and enhanced susceptibility to psoriasiform inflammation. In this context, γδ17 activation requires interleukin (IL)-23 signals and is reversed by transient depletion of the skin microbiota. Mechanistically, CD109 restrains γδ17 cell activation in a cell-extrinsic manner by fortifying skin barrier integrity. Collectively, our data provide insight into the regulation of the skin IL-23/IL-17 immune axis and how homeostasis is maintained at this important barrier site.
Disciplines :
Immunology & infectious disease
Author, co-author :
Zhang, Hualin
Carnevale, Guistino
Polese, Barbara ;  Université de Liège - ULiège > I3-Cellular and Molecular Immunology
Simard, M
Thurairajah, Bavanitha
Khan, N
Gentile, M E
Fontes, Ghislaine
Vinh, D C
Pouliot, R
King, Irah;  McGill University - McGill
Language :
English
Title :
CD109 Restrains Activation of Cutaneous IL-17-Producing γδ T Cells by Commensal Microbiota
Publication date :
October 2019
Journal title :
Cell Reports
eISSN :
2211-1247
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
29
Issue :
2
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 June 2020

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