Relation of VP7 amino acid sequence to monoclonal antibody neutralization of rotavirus and rotavirus monotype

BS Coulson, C Kirkwood - Journal of virology, 1991 - Am Soc Microbiol
BS Coulson, C Kirkwood
Journal of virology, 1991Am Soc Microbiol
The neutralization epitopes of the VP7 of human rotavirus RV-4 were studied by using five
neutralizing mouse monoclonal antibodies to select virus variants resistant to neutralization
by each of the antibodies. Antibody resistance patterns and sequence analysis of the RV-4
variants revealed that at least four sites on VP7, located at amino acids 94 (region A), 147 to
148 (region B), 213 (region C), and 291, are involved in neutralization of the human G1
rotavirus RV-4. The A-region site elicited antibody cross-reactive between G types and …
The neutralization epitopes of the VP7 of human rotavirus RV-4 were studied by using five neutralizing mouse monoclonal antibodies to select virus variants resistant to neutralization by each of the antibodies. Antibody resistance patterns and sequence analysis of the RV-4 variants revealed that at least four sites on VP7, located at amino acids 94 (region A), 147 to 148 (region B), 213 (region C), and 291, are involved in neutralization of the human G1 rotavirus RV-4. The A-region site elicited antibody cross-reactive between G types and showed species-restricted immunodominance not related to carbohydrate attachment. The monotype 1b rotavirus M37 lacked this site. The B region contained strain-specific and cross-reactive sites, absent in monotype 1c rotaviruses. The C-region site was present in all G1 rotaviruses tested. Monotype 1a rotaviruses contained all these sites of neutralization. Virus monotype and sensitivity to monoclonal antibody neutralization usually related to the presence of a particular amino acid(s) at or next to the positions at which the mutations were selected in the virus variants.
American Society for Microbiology