Universidad de Zaragoza Repository

Resumen: Some of the most promising novel tuberculosis vaccine strategies currently under development are based on respiratory vaccination, mimicking the natural route of infection. In this work, we have compared pulmonary and subcutaneous delivery of BCG vaccine in the tuberculosis-susceptible DBA/2 mouse strain, a model in which parenterally administered BCG vaccine does not protect against tuberculosis. Our data show that intranasally but not subcutaneously administered BCG confers robust protection against pulmonary tuberculosis challenge. In addition, our results indicate that pulmonary vaccination triggers a Mycobacterium tuberculosis–specific mucosal immune response orchestrated by interleukin 17A (IL-17A). Thus, IL-17A neutralization in vivo reduces protection and abrogates M. tuberculosis–specific immunoglobulin A (IgA) secretion to respiratory airways and lung expression of polymeric immunoglobulin receptor induced following intranasal vaccination. Together, our results demonstrate that pulmonary delivery of BCG can overcome the lack of protection observed when BCG is given parenterally, suggesting that respiratory tuberculosis vaccines could have an advantage in tuberculosis-endemic countries, where intradermally administered BCG has inefficient effectiveness against pulmonary tuberculosis.
Idioma: Inglés
DOI: 10.1093/infdis/jiv503
Año: 2016
Publicado en: JOURNAL OF INFECTIOUS DISEASES 213, 5 (2016), 831-839
ISSN: 0022-1899
Financiación: info:eu-repo/grantAgreement/EUR/H2020/TBVAC2020-643381
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BIO2014-5258P
Tipo y forma: Article (PostPrint)
Área (Departamento): Sanidad Animal (Departamento de Patología Animal)
Área (Departamento): Microbiología (Departamento de Microbiología, Medicina Preventiva y Salud Pública)

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Este artículo se encuentra en las siguientes colecciones:
Articles > Artículos por área > Sanidad Animal
Articles > Artículos por área > Microbiología

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