Na Young Kim, Won Rak Son, Jun Young Choi, Chi Ho Yu, Gyeung Haeng Hur, Seong Tae Jeong, Young Kee Shin, Sung Youl Hong and Sungho Shin* Pages 414 - 421 ( 8 )
<P>Purpose: Anthrax is a lethal bacterial disease caused by gram-positive bacterium <i>Bacillus anthracis</i> and vaccination is a desirable method to prevent anthrax infections. In the present study, DNA vaccine encoding a protective antigen of <i>Bacillus anthracis</i> was prepared and we investigated the influence of DNA electrotransfer in the skin on the induced immune response and biodistribution. </P><P> Methods and Results: The tdTomato reporter gene for the whole animal <i>in vivo</i> imaging was used to assess gene transfer efficiency into the skin as a function of electrical parameters. Compared to that with 25 V, the transgene expression of red fluorescent protein increased significantly when a voltage of 90 V was used. Delivery of DNA vaccines expressing <i>Bacillus anthracis</i> protective antigen domain 4 (PAD4) with an applied voltage of 90 V induced robust PA-D4-specific antibody responses. In addition, the <i>in vivo</i> fate of anthrax DNA vaccine was studied after intradermal administration into the mouse. DNA plasmids remained at the skin injection site for an appropriate period of time after immunization. Intradermal administration of DNA vaccine resulted in detection in various organs (<i>viz</i>., lung, heart, kidney, spleen, brain, and liver), although the levels were significantly reduced. </P><P> Conclusion: Our results offer important insights into how anthrax DNA vaccine delivery by intradermal electroporation affects the immune response and biodistribution of DNA vaccine. Therefore, it may provide valuable information for the development of effective DNA vaccines against anthrax infection.</P>
Anthrax, biodistribution, DNA vaccine, electroporation, immune response, skin delivery.
ABION Inc., R&D Center, Seoul, ABION Inc., R&D Center, Seoul, ABION Inc., R&D Center, Seoul, The 4th R & D Institute Directorate, Agency for Defense Development, Daejon, The 4th R & D Institute Directorate, Agency for Defense Development, Daejon, The 4th R & D Institute Directorate, Agency for Defense Development, Daejon, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Bio-MAX/N-Bio, Seoul National University, Seoul