Article (Scientific journals)
DNA immunization with plasmids encoding fusion and nucleocapsid proteins of bovine respiratory syncytial virus induces a strong cell-mediated immunity and protects calves against challenge.
Boxus, Mathieu; Tignon, Marylene; Roels, Stefan et al.
2007In Journal of Virology, 81 (13), p. 6879-89
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Keywords :
Animals; Antibodies, Viral/immunology; COS Cells; Cattle; Cattle Diseases/genetics/immunology/prevention & control; Cercopithecus aethiops; Immunity, Cellular/drug effects; Interferon-gamma/immunology; Mice; Mice, Inbred BALB C; Nucleocapsid Proteins/genetics/immunology; Respiratory Syncytial Virus Infections/genetics/immunology/prevention & control/veterinary; Respiratory Syncytial Virus, Bovine/genetics/immunology; Vaccines, DNA/genetics/immunology/pharmacology; Vero Cells; Viral Fusion Proteins/genetics/immunology; Viral Vaccines/immunology/pharmacology
Abstract :
[en] Respiratory syncytial viruses (RSV) are one of the most important respiratory pathogens of humans and cattle, and there is currently no safe and effective vaccine prophylaxis. In this study, we designed two codon-optimized plasmids encoding the bovine RSV fusion (F) and nucleocapsid (N) proteins and assessed their immunogenicity in young calves. Two administrations of both plasmids elicited low antibody levels but primed a strong cell-mediated immunity characterized by lymphoproliferative response and gamma interferon production in vitro and in vivo. Interestingly, this strong cellular response drastically reduced viral replication, clinical signs, and pulmonary lesions after a highly virulent challenge. Moreover, calves that were further vaccinated with a killed-virus vaccine developed high levels of neutralizing antibody and were fully protected following challenge. These results indicate that DNA vaccination could be a promising alternative to the classical vaccines against RSV in cattle and could therefore open perspectives for vaccinating young infants.
Disciplines :
Veterinary medicine & animal health
Immunology & infectious disease
Microbiology
Author, co-author :
Boxus, Mathieu ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech
Tignon, Marylene
Roels, Stefan
Toussaint, Jean*-Francois
Walravens, Karl
Benoit, Marie*-Ange
Coppe, Philippe
Letesson, Jean*-Jacques
Letellier, Carine
Kerkhofs, Pierre
Language :
English
Title :
DNA immunization with plasmids encoding fusion and nucleocapsid proteins of bovine respiratory syncytial virus induces a strong cell-mediated immunity and protects calves against challenge.
Publication date :
2007
Journal title :
Journal of Virology
ISSN :
0022-538X
eISSN :
1098-5514
Publisher :
American Society for Microbiology (ASM), Washington, United States - District of Columbia
Volume :
81
Issue :
13
Pages :
6879-89
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 December 2009

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