@article{mbs:/content/journal/jgv/10.1099/vir.0.81256-0, author = "Calvert, Amanda E. and Huang, Claire Y.-H. and Kinney, Richard M. and Roehrig, John T.", title = "Non-structural proteins of dengue 2 virus offer limited protection to interferon-deficient mice after dengue 2 virus challenge", journal= "Journal of General Virology", year = "2006", volume = "87", number = "2", pages = "339-346", doi = "https://doi.org/10.1099/vir.0.81256-0", url = "https://www.microbiologyresearch.org/content/journal/jgv/10.1099/vir.0.81256-0", publisher = "Microbiology Society", issn = "1465-2099", type = "Journal Article", abstract = "Chimeric (D2/WN) viruses containing the pre-membrane (prM) and envelope (E) proteins of West Nile virus (WN virus) and the capsid (C) and non-structural proteins of dengue 2 (DEN2) virus were used to evaluate the protective immunity elicited by either the flaviviral E protein or non-structural proteins. AG129 interferon-deficient mice, previously shown to be protected against lethal DEN1 or DEN2 viral infection after vaccination with a wild-type or candidate vaccine strain of DEN1 or DEN2 virus, respectively, were immunized with chimeric D2/WN virus and then challenged with DEN2 virus. D2/WN chimeric viruses were non-pathogenic in AG129 mice. These viruses elicited little anti-DEN E antibody, high levels of anti-DEN NS1 antibody and no or very low levels of DEN2 virus-neutralizing antibodies. Only 15 % of D2/WN-immunized mice survived challenge with DEN2 virus. However, their mean survival time increased by 11–14 days over non-immunized controls. These results suggest that, whilst the non-structural proteins were able to enhance mean survival times of AG129 mice, this protection was not as effective as protection mediated by the E protein.", }