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Antigenic evolution of vaccine-derived polioviruses: changes in individual epitopes and relative stability of the overall immunological propertiesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Yakovenko Maria L., Cherkasova Elena A., Rezapkin Gennady V., Ivanova Olga E., Ivanov Alexander P., Eremeeva Tatyana P., Baykova Olga Y., Chumakov Konstantin M., Agol Vadim I.
- Журнал: Journal of Virology
- Том: 80
- Номер: 6
- Год издания: 2006
- Издательство: American Society for Microbiology
- Местоположение издательства: United States
- Первая страница: 2641
- Последняя страница: 2653
- DOI: 10.1128/JVI.80.6.2641-2653.2006
- Аннотация: The Sabin oral poliovirus vaccine (OPV) readily undergoes changes in antigenic sites upon replication in humans. Here, a set of antigenically altered descendants of the three OPV serotypes (76 isolates) was characterized to determine the driving forces behind these changes and their biological implications. The amino acid residues of OPV derivatives that lie within or close to the known antigenic sites exhibited a marked tendency to be replaced by residues characteristic of homotypic wild polioviruses, and these changes may occur very early in OPV evolution. The specific amino acid alterations nicely correlated with serotype-specific changes in the reactivity of certain individual antigenic sites, as revealed by the recently devised monoclonal antibody-based enzyme-linked immunosorbent assay. In comparison to the original vaccine, small changes, if any, in the neutralizing capacity of human or rabbit sera were observed in highly diverged vaccine polioviruses of three serotypes, in spite of strong alterations of certain epitopes. We propose that the common antigenic alterations in evolving OPV strains largely reflect attempts to eliminate fitness-decreasing mutations acquired either during the original selection of the vaccine or already present in the parental strains. Variability of individual epitopes does not appear to be primarily caused by, or lead to, a significant immune evasion, enhancing only slightly, if at all, the capacity of OPV derivatives to overcome immunity in human populations. This study reveals some important patterns of poliovirus evolution and has obvious implications for the rational design of live viral vaccines.
- Добавил в систему: Агол Вадим Израилевич