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Open AccessCommunication
Int. J. Mol. Sci. 2016, 17(7), 1062;

Mechanisms Underlying the Immune Response Generated by an Oral Vibrio cholerae Vaccine

Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
Children’s Hospital of Eastern Ontario (CHEO)-Research Institute, Ottawa, ON K1H 5B2, Canada
Department of Pathology and Laboratory Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON K1H 8M5, Canada
Author to whom correspondence should be addressed.
Academic Editor: Ester Boix
Received: 14 April 2016 / Revised: 7 June 2016 / Accepted: 28 June 2016 / Published: 2 July 2016
(This article belongs to the Section Molecular Pathology, Diagnostics, and Therapeutics)
Full-Text   |   PDF [1004 KB, uploaded 2 July 2016]   |  


Mechanistic details underlying the resulting protective immune response generated by mucosal vaccines remain largely unknown. We investigated the involvement of Toll-like receptor signaling in the induction of humoral immune responses following oral immunization with Dukoral, comparing wild type mice with TLR-2-, TLR-4-, MyD88- and Trif-deficient mice. Although all groups generated similar levels of IgG antibodies, the proliferation of CD4+ T-cells in response to V. cholerae was shown to be mediated via MyD88/TLR signaling, and independently of Trif signaling. The results demonstrate differential requirements for generation of immune responses. These results also suggest that TLR pathways may be modulators of the quality of immune response elicited by the Dukoral vaccine. Determining the critical signaling pathways involved in the induction of immune response to this vaccine would be beneficial, and could contribute to more precisely-designed versions of other oral vaccines in the future. View Full-Text
Keywords: oral vaccine; Toll-like receptor; humoral immunity; Vibrio cholerae oral vaccine; Toll-like receptor; humoral immunity; Vibrio cholerae

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Sirskyj, D.; Kumar, A.; Azizi, A. Mechanisms Underlying the Immune Response Generated by an Oral Vibrio cholerae Vaccine. Int. J. Mol. Sci. 2016, 17, 1062.

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