Projects per year
Abstract
The interleukin-1 family members, IL-1β and IL-18, are processed into their biologically active forms by multi-protein complexes, known as inflammasomes. Although the inflammasome pathways that mediate IL-1β processing in myeloid cells have been defined, those involved in IL-18 processing, particularly in non-myeloid cells, are still not well understood. Here we report that the host defence molecule NOD1 regulates IL-18 processing in mouse epithelial cells in response to the mucosal pathogen, Helicobacter pylori. Specifically, NOD1 in epithelial cells mediates IL-18 processing and maturation via interactions with caspase-1, instead of the canonical inflammasome pathway involving RIPK2, NF-κB, NLRP3 and ASC. NOD1 activation and IL-18 then help maintain epithelial homoeostasis to mediate protection against pre-neoplastic changes induced by gastric H. pylori infection in vivo. Our findings thus demonstrate a function for NOD1 in epithelial cell production of bioactive IL-18 and protection against H. pylori-induced pathology.
Original language | English |
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Article number | 3804 |
Number of pages | 18 |
Journal | Nature Communications |
Volume | 14 |
Issue number | 1 |
DOIs | |
Publication status | Published - Dec 2023 |
Projects
- 3 Finished
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NLRC5, a new regulator of Helicobacter-induced inflammation
Ferrero, R.
National Health and Medical Research Council (NHMRC) (Australia)
1/01/16 → 31/12/19
Project: Research
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Helicobacter pylori acquisition of host cholesterol: its role in inflammation
Ferrero, R.
National Health and Medical Research Council (NHMRC) (Australia)
1/01/12 → 31/12/14
Project: Research
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NHMRC Research Fellowship
Ferrero, R.
National Health and Medical Research Council (NHMRC) (Australia)
1/01/10 → 31/12/19
Project: Research
Equipment
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MHTP Medical Genomics Facility
Trevor Wilson (Manager)
Hudson Institute - Department of Molecular and Translational ScienceFacility/equipment: Facility
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Monash Micro Imaging
Stephen Firth (Manager), Alex Fulcher (Operator), Oleks Chernyavskiy (Operator), Margaret Rzeszutek (Other), David Potter (Manager), Volker Hilsenstein (Operator), Juan Nunez-Iglesias (Other), Stephen Cody (Manager), Irena Carmichael (Operator), Betty Kouskousis (Other), Sarah Creed (Manager) & Giulia Ballerin (Operator)
Faculty of Medicine Nursing and Health Sciences Research PlatformsFacility/equipment: Facility