Protective effect of a polyvalent influenza DNA vaccine in pigs
Karlsson, Ingrid
Borggren, Marie
Rosenstierne, Maiken Worsøe
Trebbien, Ramona
Williams, James A.
Vidal Barba, Enric (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Vergara-Alert, Júlia (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Solanes Foz, David (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Darji, Ayub (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Sisteré-Oró, Marta (Institut de Recerca i Tecnologia Agroalimentàries. Centre de Recerca en Sanitat Animal)
Segalés Coma, Joaquim (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Nielsen, Jens
Fomsgaard, Anders

Fecha:	2018
Resumen:	Influenza A virus in swine herds represents a major problem for the swine industry and poses a constant threat for the emergence of novel pandemic viruses and the development of more effective influenza vaccines for pigs is desired. By optimizing the vector backbone and using a needle-free delivery method, we have recently demonstrated a polyvalent influenza DNA vaccine that induces a broad immune response, including both humoral and cellular immunity. To investigate the protection of our polyvalent influenza DNA vaccine approach in a pig challenge study. By intradermal needle-free delivery to the skin, we immunized pigs with two different doses (500 μg and 800 μg) of an influenza DNA vaccine based on six genes of pandemic origin, including internally expressed matrix and nucleoprotein and externally expressed hemagglutinin and neuraminidase as previously demonstrated. Two weeks following immunization, the pigs were challenged with the 2009 pandemic H1N1 virus. When challenged with 2009 pandemic H1N1, 0/5 vaccinated pigs (800 μg DNA) became infected whereas 5/5 unvaccinated control pigs were infected. The pigs vaccinated with the low dose (500 μg DNA) were only partially protected. The DNA vaccine elicited binding-, hemagglutination inhibitory (HI) − as well as cross-reactive neutralizing antibody activity and neuraminidase inhibiting antibodies in the immunized pigs, in a dose-dependent manner. The present data, together with the previously demonstrated immunogenicity of our influenza DNA vaccine, indicate that naked DNA vaccine technology provides a strong approach for the development of improved pig vaccines, applying realistic low doses of DNA and a convenient delivery method for mass vaccination.
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Challenge ; DNA vaccine ; H1N1pdm09 ; Needle-free immunization ; Protection ; Swine influenza
Publicado en:	Veterinary Immunology and Immunopathology, Vol. 195 (january 2018) , p. 25-32, ISSN 1873-2534

DOI: 10.1016/j.vetimm.2017.11.007
PMID: 29249314

8 p, 465.3 KB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias de la salud y biociencias > Centre de Recerca en Sanitat Animal (CReSA-IRTA)
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