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.