Induction of sterilizing immunity against West Nile Virus (WNV), by immunization with WNV-like particles produced in insect cells
Ming Qiao; Mundrigi Ashok; Kristen A. Bernard; Gustavo F. Palacios; Z. Hong Zhou; W. Ian Lipkin; T. Jake Liang
- Induction of sterilizing immunity against West Nile Virus (WNV), by immunization with WNV-like particles produced in insect cells
Bernard, Kristen A.
Palacios, Gustavo F.
Zhou, Z. Hong
Lipkin, W. Ian
Liang, T. Jake
- Center for Infection and Immunity
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- Journal of infectious diseases
- No specific vaccine for West Nile virus (WNV) is currently available for human use. In the present study, we describe the generation of WNV-like particles (WNV-LPs) in insect cells by use of recombinant baculoviruses expressing the WNV structural proteins prME or CprME. BALB/c mice immunized with purified WNV-LPs developed WNV-specific antibodies that had potent neutralizing activities. Mice immunized with prME-like particles (prME-LPs) showed no morbidity or mortality after challenge with WNV. Immunization with prMELPs can induce sterilizing immunity without producing any evidence of viremia or viral RNA in the spleen or brain. These results suggest that WNV-LPs hold promise as a vaccine candidate for WNV infection.
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