Effect of FHA and Prn on Bordetella pertussis colonization of mice is dependent on vaccine type and anatomical site.
PLoS One
; 15(8): e0237394, 2020.
Article
em En
| MEDLINE
| ID: mdl-32822419
ABSTRACT
Bordetella pertussis vaccine escape mutants that lack expression of the pertussis antigen pertactin (Prn) have emerged in vaccinated populations in the last 10-20 years. Additionally, clinical isolates lacking another acellular pertussis (aP) vaccine component, filamentous hemagglutinin (FHA), have been found sporadically. Here, we show that both whole-cell pertussis (wP) and aP vaccines induced protection in the lungs of mice, but that the wP vaccine was more effective in nasal clearance. Importantly, bacterial populations isolated from the lungs shifted to an FHA-negative phenotype due to frameshift mutations in the fhaB gene. Loss of FHA expression was strongly selected for in Prn-deficient strains in the lungs following aP but not wP vaccination. The combined loss of Prn and FHA led to complete abrogation of bacterial surface binding by aP-induced serum antibodies. This study demonstrates vaccine- and anatomical site-dependent adaptation of B. pertussis and has major implications for the design of improved pertussis vaccines.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas da Membrana Bacteriana Externa
/
Bordetella pertussis
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Fatores de Virulência de Bordetella
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Vacinas contra Difteria, Tétano e Coqueluche Acelular
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Hemaglutininas
Limite:
Animals
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article