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Updated: Feb 15, 2026

4D Multimodality Imaging of Citrobacter rodentium Infections in Mice
Published on: August 13, 2013
Citrobacter rodentium Infection Model for the Analysis of Bacterial Pathogenesis and Mucosal Immunology
Catherine L Kennedy1, Elizabeth L Hartland2,3,4
1Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia.
Abstract:
Citrobacter rodentium is a mouse restricted pathogen that was originally isolated from laboratory mouse colonies and causes transmissible colonic hyperplasia, characterized by thickening of the colon and inflammation. As a natural pathogen of mice, the infection model has proven critical to the development of our understanding of the pathogenesis of enteric disease and the mucosal immune response. In addition to this, some features of disease such as dysbiosis, inflammation, and wound healing replicate features of human inflammatory bowel diseases. As such, the C. rodentium infection model has become a key tool in investigations of many aspects of mucosal immunology.
Insights
Citrobacter rodentium is a mouse pathogen causing colon inflammation. This infection model is crucial for studying enteric diseases and immune responses, mimicking human inflammatory bowel diseases.
Area of Science:
- Microbiology
- Immunology
- Pathogenesis
Background:
- Citrobacter rodentium is a natural mouse pathogen causing transmissible colonic hyperplasia.
- It induces colon thickening and inflammation, serving as a valuable research model.
- The pathogen was first isolated from laboratory mouse colonies.
Purpose of the Study:
- To investigate the pathogenesis of enteric disease using the C. rodentium model.
- To understand the mucosal immune response to bacterial infection.
- To explore parallels between C. rodentium infection and human inflammatory bowel diseases.
Main Methods:
- Utilizing the C. rodentium infection model in mice.
- Observing and analyzing colonic hyperplasia, inflammation, and dysbiosis.
- Comparing disease features to human inflammatory bowel diseases.
Main Results:
- The C. rodentium model effectively replicates key features of enteric disease.
- It allows detailed study of the host's mucosal immune response.
- Disease characteristics like inflammation and dysbiosis mirror aspects of human IBD.
Conclusions:
- The C. rodentium infection model is essential for advancing our knowledge of enteric disease.
- It provides critical insights into mucosal immunology and inflammatory processes.
- This model aids research into inflammatory bowel diseases.
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