Nasal immunization with the c-terminal domain of bcla3 induced specific igg production and attenuated disease symptoms in mice infected with clostridioides difficile spores

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dc.contributor.authorMaia, A.R.
dc.contributor.authorReyes-Ramirez, R.
dc.contributor.authorPizarro-Guajardo, M.
dc.contributor.authorSaggese, A.
dc.contributor.authorRicca, E.
dc.contributor.authorBaccigalupi, L.
dc.contributor.authorParedes-Sabja, D.
dc.date.accessioned2021-07-29T13:23:08Z
dc.date.available2021-07-29T13:23:08Z
dc.date.issued2020-09
dc.descriptionIndexación: Scopus.es
dc.description.abstractClostridioides difficile is a Gram-positive, spore-forming bacterium that causes a severe intestinal infection. Spores of this pathogen enter in the human body through the oral route, interact with intestinal epithelial cells and persist in the gut. Once germinated, the vegetative cells colonize the intestine and produce toxins that enhance an immune response that perpetuate the disease. Therefore, spores are major players of the infection and ideal targets for new therapies. In this context, spore surface proteins of C. difficile, are potential antigens for the development of vaccines targeting C. difficile spores. Here, we report that the C-terminal domain of the spore surface protein BclA3, BclA3CTD, was identified as an antigenic epitope, over-produced in Escherichia coli and tested as an immunogen in mice. To increase antigen stability and efficiency, BclA3CTD was also exposed on the surface of B. subtilis spores, a mucosal vaccine delivery system. In the experimental conditions used in this study, free BclA3CTD induced antibody production in mice and attenuated some C. difficile infection symptoms after a challenge with the pathogen, while the spore-displayed antigen resulted less effective. Although dose regimen and immunization routes need to be optimized, our results suggest BclA3CTD as a potentially effective antigen to develop a new vaccination strategy targeting C. difficile spores. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.es
dc.description.urihttps://www.mdpi.com/1422-0067/21/18/6696
dc.identifier.citationInternational Journal of Molecular SciencesOpen AccessVolume 21, Issue 18, Pages 1 - 162 September 2020 Article number 6696es
dc.identifier.doi10.3390/ijms21186696
dc.identifier.issn1661-6596
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/19550
dc.language.isoenes
dc.publisherMDPI AGes
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBacillus subtilises
dc.subjectClostridium difficilees
dc.subjectExosporium proteinses
dc.subjectGastrointestinal infectiones
dc.subjectImmune responsees
dc.subjectMucosal vaccinees
dc.subjectRecombinant sporeses
dc.titleNasal immunization with the c-terminal domain of bcla3 induced specific igg production and attenuated disease symptoms in mice infected with clostridioides difficile sporeses
dc.typeArtículoes
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