Abstract:
:We investigated the antibody (Ab) and cytotoxic T lymphocyte (CTL) responses to gene gun (GG)-mediated DNA immunization via the intramuscular (i.m.) and intradermal (i.d.) routes. BALB/c mice were immunized five times at weekly intervals with plasmid DNA encoding enhanced green fluorescent protein (EGFP). EGFP production was rapidly detected in the target tissues after injection via either delivery route. There were significant differences in the magnitude and duration of the Ab and CTL responses according to the route employed. Intradermal injection elicited higher Ab and CTL responses to EGFP than i.m. injection 1 week after the last immunization. However, both immune responses were reduced rapidly 5 weeks after the last immunization via i.d. injection. In contrast, in mice injected via the i.m. routes, Ab and CTL responses 5 weeks after the last immunization remained at levels similar to those detected after 1 week. All mice generated a predominantly IgG1 Ab response via either route. These findings suggest that a combination of these two routes of DNA immunization would provide optimal conditions for induction of a broad immune response, and this information is expected to be very important for future applications of DNA vaccination.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Ito K,Ito K,Shinohara N,Kato Sdoi
10.1016/s0161-5890(03)00024-5subject
Has Abstractpub_date
2003-05-01 00:00:00pages
847-54issue
14eissn
0161-5890issn
1872-9142pii
S0161589003000245journal_volume
39pub_type
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