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Updated: Jul 15, 2026
A Protein Microarray Assay for Serological Determination of Antigen-specific Antibody Responses Following Clostridium difficile Infection
Published on: June 15, 2018
Diminished intestinal colonization by Clostridium difficile and immune response in mice after mucosal immunization
Séverine Péchiné1, Claire Janoir, Hélène Boureau
1Université de Paris-Sud, Faculté de Pharmacie, EA 4043, USC INRA, 5 rue JB Clement, F-92296 Châtenay-Malabry cedex, France. severine.pechine@u-psud.fr
Abstract:
Clostridium difficile pathogenesis is mainly due to toxins A and B. However, the first step of pathogenesis is the colonization process. We evaluated C. difficile surface proteins as vaccine antigens to diminish intestinal colonization in a human flora-associated mouse model. First, we used the flagellar cap protein FliD of C. difficile, in order to test several immunization routes: intranasal, rectal, and intragastric. The rectal route, which is the most efficient, was used to vaccine groups of mice with different antigen combinations. After immunizations, the mice were challenged with the toxigenic C. difficile and a significant statistical difference between the control group and the immunized groups was observed in the colonization levels of C. difficile.
Insights
Researchers explored Clostridium difficile surface proteins as vaccine antigens to reduce intestinal colonization. Rectal immunization with the flagellar cap protein FliD significantly lowered C. difficile levels in mice.
Area of Science:
- Microbiology
- Immunology
- Vaccine Development
Background:
- Clostridium difficile pathogenesis is primarily mediated by toxins A and B.
- Intestinal colonization is the critical initial step in C. difficile infection.
- Developing strategies to prevent colonization is crucial for combating C. difficile infections.
Purpose of the Study:
- To evaluate Clostridium difficile surface proteins as potential vaccine antigens.
- To assess the efficacy of different immunization routes for targeting C. difficile colonization.
- To investigate the role of the flagellar cap protein FliD in a mouse model.
Main Methods:
- Utilized a human flora-associated mouse model to simulate intestinal colonization.
- Tested intranasal, rectal, and intragastric immunization routes with the C. difficile flagellar cap protein FliD.
- Administered different combinations of antigens via the most effective immunization route (rectal).
- Challenged immunized mice with toxigenic C. difficile to assess colonization levels.
Main Results:
- The rectal immunization route demonstrated the highest efficiency in eliciting a response.
- A statistically significant reduction in C. difficile colonization was observed in immunized groups compared to the control group.
- Vaccination with C. difficile surface proteins, specifically FliD, effectively diminished intestinal colonization.
Conclusions:
- Surface proteins of Clostridium difficile, such as FliD, are viable vaccine antigens for preventing intestinal colonization.
- Rectal immunization is an effective route for delivering C. difficile vaccines targeting colonization.
- Vaccine strategies aimed at preventing C. difficile colonization show promise in reducing infection levels.
