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.
| Original language | English |
|---|---|
| Journal | Nature Immunology |
| Volume | 5 |
| Issue number | 4 |
| Pages (from-to) | 380-387 |
| Number of pages | 8 |
| ISSN | 1529-2908 |
| DOIs | |
| Publication status | Published - 04.2004 |
Funding
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
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Research Areas and Centers
- Academic Focus: Center for Infection and Inflammation Research (ZIEL)
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