Abstract:
:In an effort to develop a more effective genetic immunization strategy for HIV, we developed an HIV-2 env DNA vaccine and evaluated three adjuvant formulations. The gp140 gene from HIV-2(UC2 )was synthesized using mammalian codons and cloned into a plasmid vector that expresses eukaryotic genes at high levels. We found that after three immunizations in mice, a novel cationic liposome formulation (Vaxfectin) was superior at inducing systemic and mucosal antibody responses compared to a naked DNA, a controlled release device (an Alzet minipump) and polysaccharide microparticles made from chitosan (P = 0.027). Vaxfectin also induced higher levels of systemic antibodies for each isotype and IgG subclass as well as levels of HIV-2-specific mucosal IgA (P = 0.034). When different routes of immunization were used with the Vaxfectin formulation, gp140-specific systemic antibody responses were highest by the intradermal route, mucosal antibody responses were highest by the intramuscular route, while the intranasal route was the least effective. These results suggest that this cationic liposome formulation is an important adjuvant to improve the effectiveness of genetic immunization strategies for AIDS, and that multiple routes of immunization should be employed for optimal efficacy for HIV vaccine candidates.
journal_name
DNA Cell Bioljournal_title
DNA and cell biologyauthors
Locher CP,Witt SA,Ashlock BM,Levy JAdoi
10.1089/104454904322759911keywords:
subject
Has Abstractpub_date
2004-02-01 00:00:00pages
107-10issue
2eissn
1044-5498issn
1557-7430journal_volume
23pub_type
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