Gene gun-mediated delivery of allergen-encoding plasmid DNA has been in focus for many years now as being a needle-free alternative to the protein-based desensitization regimen used in specific immunotherapy. Biolistic immunization with the Helios gene gun has proven to be potent in the induction of antigen-specific CD4(+) and CD8(+) T cells. Here we describe biolistic vaccination in experimental mouse models of IgE-mediated type I allergy as well as allergen-induced airway inflammation.
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