Serotype-specificity of recombinant fusion proteins containing domain III of dengue virus

Here, the antigenic specificity of the recombinant fusion proteins containing aa 286–426 of the dengue envelope protein fused to P64k from Neisseria meningitidis and the cross-reactive antibody response induced in immunized mice and monkeys were evaluated. The anti-dengue mice antibodies showed a higher reactivity to the homologous recombinant proteins compared to the wide cross-reactivity observed by dot blot to the viral antigens. The immune response induced by the recombinant proteins in mice and monkeys, was highly serotype specific. The serotype-specificity associated with these recombinant proteins in addition to the high antigenicity, immunogenicity and protecting capacity suggest their advantages as possible vaccine candidates.