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Plasmid DNA (pDNA) vaccines are effective at eliciting immune responses in a wide variety of animal model systems, however, pDNA vaccines have generally been incapable of inducing robust immune responses in clinical trials. Therefore, to identify means to improve pDNA vaccine performance, we compared various post-transcriptional and post-translational genetic modifications for their ability to improve...
The effectiveness of plasmid DNA (pDNA) vaccines can be improved by the co-delivery of plasmid-encoded molecular adjuvants. We evaluated pDNAs encoding GM-CSF, Flt-3L, IL-12 alone, or in combination, for their relative ability to serve as adjuvants to augment humoral and cell-mediated immune responses elicited by prototype pDNA vaccines. In Balb/c mice we found that co-administration of plasmid-based...
An experimental pDNA vaccine adjuvant expressing IL-12 was evaluated for its ability to augment the humoral and cellular immune responses elicited by a SIVmac239 gag p39 expressing pDNA vaccine. To determine the effect of vaccine dose on the immune response, rhesus macaques were immunized with 1.5mg or 5.0mg of SIVmac239 gag pDNA, with or without co-immunization of IL-12 pDNA at 1.5mg and 5.0mg, respectively...
Given the importance of the HIV-specific cell-mediated immune response in the early control and resolution of HIV infection and the observed correlation between pre-challenge vaccine elicited CTL responses and post challenge outcome in SHIV/rhesus macaque experiments, we sought to identify several candidate plasmid DNA (pDNA) vaccine designs capable of eliciting robust and balanced cell-mediated immune...
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