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Candidate dengue DNA vaccine constructs for each dengue serotype were developed by incorporating pre-membrane and envelope genes into a plasmid vector. A Phase 1 clinical trial was performed using the dengue virus serotype-1 (DENV-1) vaccine construct (D1ME 100 ). The study was an open-label, dose-escalation, safety and immunogenicity trial involving 22 healthy flavivirus-naïve adults assigned...
A new vaccination strategy for dengue virus (DENV) was evaluated in rhesus macaques by priming with tetravalent purified inactivated virus (TPIV) or tetravalent plasmid DNA vaccines expressing the structural prME gene region (TDNA) then boosting 2 months later with a tetravalent live attenuated virus (TLAV) vaccine. Both vaccine combinations elicited virus neutralizing (N) antibodies. The TPIV/TLAV...
Dengue remains a global public health threat and development of a safe and effective vaccine is a principal public health goal. The primary correlate of immunity is thought to be neutralizing antibodies. Currently, the plaque reduction neutralization test (PRNT) is the gold standard measure of dengue neutralizing antibody responses, but this test is limited by time-consuming performance. In addition,...
A dengue-1 DNA vaccine containing sequences encoding premembrane and envelope proteins (DIME) was previously shown to elicit virus neutralizing antibodies in rhesus and Aotus monkeys, and the primates were partially protected from viremia upon challenge. To increase the neutralizing antibody levels and subsequent protection from virus challenge, four strategies were evaluated: (a) coimmunization with...
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