Recombinant capriposviruses expressing proteins of bluetongue virus : evaluation of immune response and protection in small ruminants
Perrin A., Albina E., Breard E., Sailleau C., Prome S., Grillet C., Kwiatek O., Russo P., Thiéry R., Zientara S., Cetre-Sossah C.. 2007. In : Camus Emmanuel (ed.), Cardinale Eric (ed.), Dalibard Christophe (ed.), Martinez Dominique (ed.), Renard Jean-François (ed.), Roger François (ed.). Does control of animal infectious risks offer a new international perspective ? : proceedings of the 12th International Conference of the Association of Institutions of Tropical Veterinary Medicine, Montpellier, France, 20-22 August 2007. Montpellier : CIRAD, p. 187-190. International Conference of the Association of Institutions of Tropical Veterinary Medicine. 12, 2007-08-20/2007-08-22, Montpellier (France).
Bluetongue is an infectious arthropod-borne viral disease affecting sheep, domestic and wild ruminants caused by Bluetongue Virus (BTV) and transmitted by few species of Culicoides (Diptera: Ceratopogonidae). Since 1998, outbreaks of BT involving 6 distinct serotypes have occurred in the Mediterranean basin. The only BTV vaccines currently available are serotype specific. Objectives: The development of recombinants capripoxvirus for protective immunization of ruminants against bluetongue virus (BTV) infection is described here. Methodology: Sheep (n=11) and goats (n=4) were immunized with bluetongue recombinant capripoxvirus (BTV-Cpox) expressing individually four different genes encoding two capsid proteins (VP2 and VP7) and two non-structural proteins (NS1, NS3) of Bluetongue virus serotype 2 (BTV-2). Results: Seroconversion was observed against NS3, VP7 and VP2 in both groups of animals. A specific BTV antigens lymphoproliferation observed in goats corroborates with a partial protection in sheep challenged with a virulent strain of BTV-2.
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Agents Cirad, auteurs de cette publication :
- Albina Emmanuel — Dgdrs / Dgdrs - dims
- Cetre-Sossah Catherine — Bios / UMR ASTRE
- Kwiatek Olivier — Bios / UMR ASTRE
