• J. Infect. Dis. · Nov 2011

    Kunjin virus replicon-based vaccines expressing Ebola virus glycoprotein GP protect the guinea pig against lethal Ebola virus infection.

    • O Reynard, V Mokhonov, E Mokhonova, J Leung, A Page, M Mateo, O Pyankova, M C Georges-Courbot, H Raoul, A A Khromykh, and V E Volchkov.
    • Filovirus Laboratory, INSERM U758, Human Virology Department, Claude Bernard University Lyon-1, Université de Lyon, Ecole Normale Supérieure de Lyon, Lyon, France.
    • J. Infect. Dis. 2011 Nov 1; 204 Suppl 3: S1060-5.

    AbstractPre- or postexposure treatments against the filoviral hemorrhagic fevers are currently not available for human use. We evaluated, in a guinea pig model, the immunogenic potential of Kunjin virus (KUN)-derived replicons as a vaccine candidate against Ebola virus (EBOV). Virus like particles (VLPs) containing KUN replicons expressing EBOV wild-type glycoprotein GP, membrane anchor-truncated GP (GP/Ctr), and mutated GP (D637L) with enhanced shedding capacity were generated and assayed for their protective efficacy. Immunization with KUN VLPs expressing full-length wild-type and D637L-mutated GPs but not membrane anchor-truncated GP induced dose-dependent protection against a challenge of a lethal dose of recombinant guinea pig-adapted EBOV. The surviving animals showed complete clearance of the virus. Our results demonstrate the potential for KUN replicon vectors as vaccine candidates against EBOV infection.

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