Gut Proteases Target Yersinia Invasin
Author Information
Author(s): Trček Janja, Oellerich Marc F, Niedung Katy, Ebel Frank, Freund Sandra, Trülzsch Konrad
Primary Institution: Max von Pettenkofer Institut für Hygiene und Medizinische Mikrobiologie, Ludwig Maximilians Universität München, Germany
Hypothesis
Do gut proteases contribute to the low number of Yersinia invading Peyer's patches?
Conclusion
Gut proteases rapidly degrade Yersinia invasin, preventing its role in mediating invasion of Peyer's patches.
Supporting Evidence
- Invasin is degraded within 2-3 hours after reaching the small intestine.
- Protease-treated Yersinia are less invasive in cell culture models.
- YadA, another virulence factor, is also cleaved by gut proteases.
Takeaway
The proteins that help Yersinia bacteria invade the gut are quickly broken down by enzymes in our intestines, making it harder for the bacteria to cause infection.
Methodology
Mice were orally infected with Yersinia, and the degradation of invasin was analyzed using Western blotting.
Limitations
The study primarily used a mouse model, which may not fully represent human physiology.
Participant Demographics
6-8 week old female Balb/c mice
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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