Recognition of a multiple antigen peptide containing sequence from mimotope of the dengue type 3 virus NS4B protein by human antibodies

OBJECTIVE@#To evaluate the recognition of NS4B mimotope, as multiple antigen peptide (MAP), by dengue antibodies presents in serum samples from patients with different serotype infections.@*METHODS@#A MAP containing mimotope sequence was synthesized and used to evaluate the recognition of NS4B mimotope as MAP by a panel of 66 human sera from dengue cases by an indirect ELISA assay.@*RESULTS@#The MAP differentiated between sera from dengue viruses infected patients and sera from healthy individuals and the best reactivity was shown by serum from dengue type 3 virus patients. The recognition was more intense with serum from patients with secondary infection.@*CONCLUSIONS@#The findings suggest the potential use of NS4B mimotope on the development of a multi-epitope diagnostic tool. These results are important for further immunogenicity studies.

Recognition of a multiple antigen peptide containing sequence from mimotope of the dengue type 3 virus NS4B protein by human antibodies

Objective: To evaluate the recognition of NS4B mimotope, as multiple antigen peptide (MAP), by dengue antibodies presents in serum samples from patients with different serotype infections. Methods: A MAP containing mimotope sequence was synthesized and used to evaluate the recognition of NS4B mimotope as MAP by a panel of 66 human sera from dengue cases by an indirect ELISA assay. Results: The MAP differentiated between sera from dengue viruses infected patients and sera from healthy individuals and the best reactivity was shown by serum from dengue type 3 virus patients. The recognition was more intense with serum from patients with secondary infection. Conclusions: The findings suggest the potential use of NS4B mimotope on the development of a multi-epitope diagnostic tool. These results are important for further immunogenicity studies.

Ensayo de linfoproliferación antígeno específico al virus dengue con células T humanas / Dengue virus-specific antigen lymphoproliferation assay with human T cells

Papers dealing with the study of the immune response to dengue virus infection and with the role it may play in the pathogenesis of dengue hemorrhaghic fever are increasingly important. The memory human T cell response in individuals with history of dengue infection during the Cuban epidemic was studied in this paper for a further evaluation of the antigenicity of viral proteins. To this end, mononuclear cells of peripheral blood from individuals immune to dengue and from a group of control subjects with viral antigens were incubated. It was obtained a significant proliferative response of lymphocytes from individuals with history of infection against dengue virus type 2 compared with control subjects. It was proved this way the dengue virus-specific memory T CD4+ cell response in the individuals under study.