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[Recombinant envelope glycoprotein domain III of dengue virus inhibit virus infection]. | LitMetric

AI Article Synopsis

Article Abstract

Objective: To observe the ability of dengue virus recombinant envelope protein domain expressed in E. coli to inhibit virus infection and induce the neutralizing antibody.

Methods: E III protein of Dengue virus serotypes 1-4 were expressed in E. coli BL21(DE3) then purified. Recombinant proteins were tested to inhibit DV2 from infecting BHK-21 cell. Rabbits were immunized with recombinant proteins to produce anti-E III serum. Antibody titers were determined by neutralizing assay.

Results: The recombinant E III proteins of Dengue virus serotypes 1-4 were expressed in E. coli. They effectively protected BHK cells in culture against DV2 infection. All four type anti-E III sera can neutralize DV2 but their efficacies are different.

Conclusion: proteins of dengue virus expressed in E. coli can directly inhibit DV2 infection. Neutralizing antibodies were induced by E III proteins. Both E III protein of dengue virus and the neutralizing antibodies they induced are more efficient in inhibiting homologous dengue serotypes infection than heterologous serotypes.

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