How Pyroptotic Cell Death Signals Dendritic Cells
Author Information
Author(s): Holley Caroline L., Monteleone Mercedes, Fisch Daniel, Libert Alexandre E. S., Ju Robert J., Choi Joon H., Condon Nicholas D., Emming Stefan, Crawford Joanna, Lawrence Grace M. E. P., Coombs Jared R., Lefevre James G., Bajracharya Rinie, Lahoud Mireille H., Yap Alpha S., Hamilton Nicholas, Stehbens Samantha J., Kagan Jonathan C., Ariotti Nicholas, Burgener Sabrina S., Schroder Kate
Primary Institution: University of Queensland
Hypothesis
Do pyroptotic cell corpses engage dendritic cells through F-actin-rich filopodia?
Conclusion
The study reveals that pyroptotic cell corpses are marked by F-actin-rich filopodia that activate dendritic cells via CLEC9A.
Supporting Evidence
- Inflammasomes trigger the eruption of filopodia from the plasma membrane before pyroptotic cell rupture.
- Pyroptotic filopodia are recognized by dendritic cells through the F-actin receptor, CLEC9A.
- Filopodia persist after cell death, marking the corpse for immune recognition.
Takeaway
When certain immune cells die in a fiery way, they leave behind little arms that help other immune cells recognize them and respond.
Methodology
The study used live imaging of macrophages to observe the dynamics of F-actin during pyroptosis and its interaction with dendritic cells.
Limitations
The study primarily focuses on macrophages and may not fully represent other cell types.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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