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  • Title: Pulmonary delivery of respiratory syncytial virus DNA vaccines using macroaggregated albumin particles.
    Author: Harcourt JL, Anderson LJ, Sullender W, Tripp RA.
    Journal: Vaccine; 2004 Jun 02; 22(17-18):2248-60. PubMed ID: 15149784.
    Abstract:
    At present there is no safe and effective vaccine for respiratory syncytial virus (RSV). DNA vaccines encoding RSV surface glycoproteins are one option being examined. Current methods to deliver DNA vaccines generally require repeated high dose intramuscular or intradermal administration for effectiveness. In this study, we examine the efficacy of pulmonary DNA vaccination using low dose DNA vaccines encoding the RSV F glycoprotein conjugated to macroaggregated albumin (MAA-F). Single vaccination of BALB/c mice with 1 microg MAA-F was ineffective, however mice boosted with an additional 1 microg MAA-F, or vaccinated a single time with 10 microg MAA-F, developed substantially improved immunity associated with reduced viral titers, increased anti-F antibody responses, and enhanced Th1 and Th2 intracellular cytokine responses. This study shows that MAA may be a useful carrier for RSV DNA vaccines.
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