Immunization with baculovirus-expressed VP4 protein passively protects against simian and murine rotavirus challenge. |
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Authors: | E R Mackow P T Vo R Broome D Bass and H B Greenberg |
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Institution: | Department of Microbiology and Immunology, Stanford University, California 94305. |
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Abstract: | A baculovirus-expressed VP4 protein derived from the simian rhesus rotavirus (RRV) was used to parenterally immunize murine dams. VP4-immunized dams developed high levels of neutralizing antibodies against RRV and low levels of cross-reactive neutralizing antibodies against human strains Wa, ST3, and S2 and animal strains SA-11, NCDV, and Eb. Newborn mice suckled on VP4-immunized dams were protected against a virulent challenge dose of the simian strain RRV and against murine rotavirus Eb. The cross-reactive nature of the serum-neutralizing response generated by VP4 immunization and the protective efficacy of the immunization suggest that recombinant-expressed VP4 proteins should be considered as viable vaccine candidates. |
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