Antibody-selected variation and reversion in Sindbis virus neutralization epitopes.
AUTOR(ES)
Stec, D S
RESUMO
Sindbis virus variants evidencing a complex and bidirectional tendency toward spontaneous antigenic change were isolated and characterized. Variants were selected on the basis of their escape from neutralization by individual monoclonal antibodies to either of the two envelope glycoproteins, E2 and E1. Multisite variants, including one altered in three neutralization sites, were obtained by selecting mutants consecutively in the presence of different neutralizing monoclonal antibodies. Two phenotypic revertants, each of which reacquired prototype antigenicity, were back-selected on the basis of their reactivity with a neutralizing monoclonal antibody. An incidental oligonucleotide marker distinguished these and the variant from which they arose from parental Sindbis virus and other mutants, thereby confirming that the revertants were true progeny of the antigenic variant. Prototype Sindbis virus and variants derived from it were compared on the basis of their reactivities with each of a panel of monoclonal antibodies; patterns revealed a minimum of five independently mutable Sindbis virus neutralization epitopes, segregating as three antigenic sites (two E2 and one E1).
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=252797Documentos Relacionados
- Receptor-binding characteristics of monoclonal antibody-selected antigenic variants of influenza virus.
- Natural variation of poliovirus neutralization epitopes.
- Characterization and sequence analyses of antibody-selected antigenic variants of herpes simplex virus show a conformationally complex epitope on glycoprotein H.
- Entry kinetics and mouse virulence of Ross River virus mutants altered in neutralization epitopes.
- Three major glycoprotein genes of varicella-zoster virus whose products have neutralization epitopes.