Article (Scientific journals)
Genetic immunisation of cattle against bovine herpesvirus 1: glycoprotein gD confers higher protection than glycoprotein gC or tegument protein VP8.
Toussaint, Jean-Francois; Coen, Laurent; Letellier, Carine et al.
2005In Veterinary Research, 36 (4), p. 529-44
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Keywords :
Animals; Antibodies, Viral/blood; Capsid Proteins/immunology; Cattle/immunology; Cell Line; Glycoproteins/immunology; Herpesvirus 1, Bovine/immunology; Herpesvirus Vaccines/immunology; Time Factors; Vaccines, DNA/immunology; Viral Envelope Proteins/immunology
Abstract :
[en] Bovine herpesvirus 1 (BoHV-1) has frequently been used as a model for testing parameters affecting DNA immunisation in large animals like cattle. However, the selection of target antigens has been poorly studied, and most of the experiments have been conducted in mice. In the present study, we demonstrated in cattle that a DNA vaccine encoding BoHV-1 glycoprotein gD induces higher neutralising antibody titres than vaccines encoding BoHV-1 gC. Additionally, we show that a DNA vaccine encoding a secreted form of gD induces a higher immune response than a vaccine encoding full-length gD. However, the enhanced immunogenicity associated with the secretion of gD could not be extended to the glycoprotein gC. The current study also describes for the first time the development and the evaluation of a DNA vaccine encoding the major tegument protein VP8. This construct, which is the first BoHV-1 plasmid vaccine candidate that is not directed against a surface glycoprotein, induced a high BoHV-1 specific cellular immunity but no humoral immune response. The calves vaccinated with the constructs encoding full-length and truncated gD showed a non-significant tenfold reduction of virus excretion after challenge. Those calves also excreted virus for significantly (p < 0.05) shorter periods (1.5 days) than the non-vaccinated controls. The other constructs encoding gC and VP8 antigens induced no virological protection as compared to controls. Altogether the DNA vaccines induced weaker immunity and protection than conventional marker vaccines tested previously, confirming the difficulty to develop efficient DNA vaccines in large species.
Disciplines :
Microbiology
Author, co-author :
Toussaint, Jean-Francois
Coen, Laurent
Letellier, Carine
Dispas, Marc
Gillet, Laurent  ;  Université de Liège - ULiège > Immunologie et vaccinologie
Vanderplasschen, Alain ;  Université de Liège - ULiège > Immunologie et vaccinologie
Kerkhofs, Pierre
Language :
English
Title :
Genetic immunisation of cattle against bovine herpesvirus 1: glycoprotein gD confers higher protection than glycoprotein gC or tegument protein VP8.
Publication date :
2005
Journal title :
Veterinary Research
ISSN :
0928-4249
eISSN :
1297-9716
Publisher :
EDP Sciences, Les Ulis, France
Volume :
36
Issue :
4
Pages :
529-44
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 November 2010

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