Fas/CD95 Signaling Pathway in Damage-Associated Molecular Pattern (DAMP)-Sensing Receptors
Related Experiment Video
Updated: Sep 23, 2025

Measuring Composition of CD95 Death-Inducing Signaling Complex and Processing of Procaspase-8 in this Complex
Published on: August 2, 2021
Gael Galli1,2,3, Pierre Vacher4, Bernhard Ryffel5
1CNRS, ImmunoConcEpT, UMR 5164, University Bordeaux, 33000 Bordeaux, France.
Abstract:
Study of the initial steps of the CD95-mediated signaling pathways is a field of intense research and a long list of actors has been described in the literature. Nonetheless, the dynamism of protein-protein interactions (PPIs) occurring in the presence or absence of its natural ligand, CD95L, and the cellular distribution where these PPIs take place render it difficult to predict what will be the cellular outcome associated with the receptor engagement. Accordingly, CD95 stimulation can trigger apoptosis, necroptosis, pyroptosis, or pro-inflammatory signaling pathways such as nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and phosphatidylinositol-3-kinase (PI3K). Recent data suggest that CD95 can also activate pattern recognition receptors (PRRs) known to sense damage-associated molecular patterns (DAMPs) such as DNA debris and dead cells. This activation might contribute to the pro-inflammatory role of CD95 and favor cancer development or severity of chronic inflammatory and auto-immune disorders. Herein, we discuss some of the molecular links that might connect the CD95 signaling to DAMP sensors.
Insights
CD95 receptor signaling is complex, influencing cell death and inflammation. New research explores how CD95 connects to damage-associated molecular pattern (DAMP) sensors, potentially impacting inflammatory diseases and cancer.
Area of Science:
- Immunology
- Cell Biology
- Molecular Signaling
Background:
- CD95 (Fas/APO-1) receptor engagement initiates complex signaling pathways.
- The dynamic nature of CD95 protein-protein interactions (PPIs) complicates predicting cellular outcomes.
- CD95 activation can lead to diverse cellular responses, including apoptosis, necroptosis, pyroptosis, and pro-inflammatory pathways like NF-κB and PI3K.
Purpose of the Study:
- To explore the molecular links between CD95 signaling and pattern recognition receptors (PRRs).
- To understand how CD95 activation may contribute to sensing damage-associated molecular patterns (DAMPs).
Main Methods:
- Literature review and discussion of existing molecular data.
- Analysis of signaling cascades initiated by CD95 engagement.
Main Results:
- CD95 signaling can activate PRRs, which sense DAMPs.
- This interaction may link CD95 to inflammatory processes.
- Potential implications for cancer development and inflammatory/auto-immune disorders.
Conclusions:
- CD95 signaling intersects with DAMP sensing pathways.
- Understanding these connections is crucial for comprehending CD95's role in inflammation and disease.
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