title: Outer membrane vesicles derived from Bordetella parapertussis as an acellular vaccine against Bordetella parapertussis and Bordetella pertussis infection.
abstract: Bordetella parapertussis, a close related species of B. pertussis, can also cause the disease named pertussis or whooping cough. The number of cases caused by this related pathogen has risen sustained in the last years. The widely used cellular (wP) or acellular (aP) pertussis vaccines have little or no efficacy against B. parapertussis. In an effort to devise an effective acellular vaccine against B. parapertussis infection, outer membrane vesicles (OMVs) were obtained from B. parapertussis. Proteomic analysis of the resulting OMVs, designated OMVsBpp, evidenced the presence of several surface immunogens including pertactin. The characterized OMVsBpp were used in murine B. parapertussis intranasal challenge model to examine their protective capacity when administered by systemic route. Immunized BALB/c mice were challenged with sublethal doses of B. parapertussis. Significant differences between immunized animals and the negative control group were observed (p<0.001). OMVsBpp protected against B. parapertussis infection, whereas current commercial aP vaccine showed little protection against such pathogen. More interestingly, protection induced by OMVsBpp against B. pertussis was comparable to our previously designed vaccine consisting in OMVs derived from B. pertussis (OMVsBp). For these experiments we used as a positive control the current commercial aP vaccine in high dose. As expected aP offered protection against B. pertussis in mice. Altogether the results presented here showed that the OMVs from B. parapertussis are an attractive vaccine candidate to protect against whooping cough induced by B. parapertussis but also by B. pertussis.
authors.affiliation: Laborartorio VacSal, Instituto de Biotecnología y Biología Molecular, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CCT La Plata CONICET, Argentina.
authors.forename: D
authors.initials: D
authors.lastname: Bottero
authors.forename: M E
authors.initials: ME
authors.lastname: Gaillard
authors.forename: A
authors.initials: A
authors.lastname: Errea
authors.forename: G
authors.initials: G
authors.lastname: Moreno
authors.forename: E
authors.initials: E
authors.lastname: Zurita
authors.forename: L
authors.initials: L
authors.lastname: Pianciola
authors.forename: M
authors.initials: M
authors.lastname: Rumbo
authors.forename: D
authors.initials: D
authors.lastname: Hozbor
mesh_terms: D000818:Animals; D001426:Bacterial Proteins / Q000032:analysis; D001885:Bordetella Infections / Q000276:immunology / Q000517:prevention & control*; D042483:Bordetella parapertussis / Q000276:immunology*; D001886:Bordetella pertussis / Q000276:immunology*; D004195:Disease Models, Animal; D055354:Exosomes / Q000737:chemistry / Q000276:immunology*; D005260:Female; D051379:Mice; D008807:Mice, Inbred BALB C; D010567:Pertussis Vaccine / Q000008:administration & dosage* / Q000276:immunology* / Q000302:isolation & purification; D020543:Proteome / Q000032:analysis; D022282:Vaccines, Acellular / Q000008:administration & dosage / Q000276:immunology / Q000302:isolation & purification
chemical_list: D001426:Bacterial Proteins; D010567:Pertussis Vaccine; D020543:Proteome; D022282:Vaccines, Acellular
keywords: Acellular vaccine; Bordetella parapertussis; Bordetella pertussis; OMVs; Protection; Whooping cough