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Updated: May 21, 2026
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Imaging Ca2+ Responses During Shigella Infection of Epithelial Cells
Published on: May 24, 2018
NLRP10 enhances Shigella-induced pro-inflammatory responses
Katja Lautz1, Anna Damm, Maureen Menning
1Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, Cologne, Germany.
Cellular Microbiology
|June 8, 2012
Summary
Human NLRP10 protein enhances innate immunity against Shigella flexneri infection. It acts as a scaffold, interacting with NOD1 to mediate inflammatory responses via p38 and NF-κB pathways.
Area of Science:
- Immunology
- Cell Biology
- Microbiology
Background:
- NLR family proteins are crucial intracellular sensors for pathogen detection.
- The precise roles of many human NLR proteins in innate immunity are not fully understood.
Purpose of the Study:
- To investigate the function of human NLRP10 in bacterial infections.
- To elucidate the molecular mechanisms underlying NLRP10's role in innate immune signaling.
Main Methods:
- Characterization of NLRP10 localization and function.
- siRNA-mediated gene silencing in epithelial cells and fibroblasts.
- Analysis of inflammatory cytokine release, p38, and NF-κB activation.
- Co-immunoprecipitation assays to identify protein interactions.
Main Results:
- NLRP10 is a cytoplasmic protein that positively regulates innate immune responses to Shigella flexneri.
- NLRP10 knockdown impairs pro-inflammatory cytokine release by affecting p38 and NF-κB activation.
- NLRP10's ATPase activity and PYD domain are essential for its function.
- NLRP10 interacts with NOD1, RIP2, TAK1, and NEMO, and is recruited to bacterial entry sites.
Conclusions:
- NLRP10 plays a significant role in the innate immune response to bacterial pathogens.
- NLRP10 functions as a scaffold protein, facilitating the assembly of the NOD1-Nodosome complex.
- These findings reveal a novel mechanism of innate immunity involving NLRP10 in bacterial sensing.
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