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Fas ligation on macrophages enhances IL-1R1-Toll-like receptor 4 signaling and promotes chronic inflammation

Yingyu Ma, Hongtao Liu, Hoang Tu-Rapp, Hans Juergen Thiesen, Saleh M. Ibrahim, Shawn M. Cole, Richard M. Pope*

*Korrespondierende/r Autor/-in für diese Arbeit

Abstract

The nonapoptotic functions of Fas ligation are incompletely characterized. In contrast to expectations, we show here that Fas-deficient mice developed less-severe collagen-induced arthritis than did control mice. Despite having milder arthritis, Fas-deficient mice had more of the critical pro-inflammatory mediator interleukin-1β (IL-1β) in their joints, suggesting inefficient activation through IL-1 receptor 1 (IL-1R1) when Fas signaling is deficient. In primary human macrophages and macrophages from Fas- or Fas ligand (FasL -deficient mice, interruption of Fas-FasL signaling suppressed nuclear factor-κB activation and cytokine expression induced by IL-1β and lipopolysaccharide. This cross-talk was mediated by the Fas-associated death domain through interaction with myeloid differentiation factor 88. These observations document a unique mechanism whereby Fas-FasL interactions enhance activation through the IL-1R1 or Toll-like receptor 4 pathway, which may contribute to the pathogenesis of chronic arthritis.

OriginalspracheEnglisch
ZeitschriftNature Immunology
Jahrgang5
Ausgabenummer4
Seiten (von - bis)380-387
Seitenumfang8
ISSN1529-2908
DOIs
PublikationsstatusVeröffentlicht - 04.2004

Fördermittel

also thank H. Perlman, P.H. Stern, N.A. Clipstone and A. Lin for critical review of the manuscript; M.E. Peter for advice on the immunoprecipitation experiments; C.J. Zander for technical assistance; and H.-J. Kreutzer for help evaluating joint histopathology. Supported by the National Institutes of Health (R01-AR049217) and The Veterans Administration Research Service (Merit Review), the National and Greater Chicagoland Chapters of the Arthritis Foundation and Deutsche Forschungsgemeinschaft (IB 24/3-1 to S.M.I.).

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

  1. SDG 3 – Gesundheit und Wohlergehen
    SDG 3 – Gesundheit und Wohlergehen

Strategische Forschungsbereiche und Zentren

  • Forschungsschwerpunkt: Infektion und Entzündung - Zentrum für Infektions- und Entzündungsforschung Lübeck (ZIEL)

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