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The efficacy of multi‐agent DNA vaccines consisting of a truncated gene encoding Bacillus anthracis lethal factor (LFn) fused to either Yersinia pestis V antigen (V) or Y
. pestis F1 was evaluated. A/J mice were immunized by gene gun and developed predominantly IgG1 responses that were fully protective against a lethal aerosolized B. anthracis spore challenge but required the presence of an additional...
Electroporation of DNA vaccines represents a platform technology well positioned for the development of multivalent biodefense vaccines. To evaluate this hypothesis, three vaccine constructs were produced using codon-optimized genes encoding Bacillus anthracis Protective Antigen (PA), and the Yersinia pestis genes LcrV and F1, cloned into pVAX1. A/J mice were immunized on a prime-boost schedule with...
The use of a DNA immunization approach to deliver protective antigens against Yersinia pestis (Y. pestis) has been successful in previously reported studies. In the current study, the gene designs for V and F1, two well-studied virulent factors serving as main targets for vaccine development, were altered to explore additional options in hopes of improving the protective immunity of DNA vaccines expressing...
DNA vaccine vectors were produced which were optimised for expression of the Yersinia pestis V antigen in the BALB/c mouse model. Six different eukaryotic promoters were compared, resulting in the selection of the CMV promoter with an additional translational enhancer downstream. Surprisingly, alteration of the codon usage of the lcrV gene encoding V antigen for expression in murine cells was not...
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