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This study was designed to determine the impact of maternal HIV-1 specific immunity on HIV-DNA immunization of 2-week-old pups during the breast-feeding period.Adult female mice received intranasal or intradermal HIV-DNA (gp160Env, p37Gag, Nef, Tat and Rev) prime and recombinant protein boost immunizations, which induced mucosal and systemic HIV-1 specific B and T cell responses. Intranasal administration...
A DNA plasmid encoding human immunodeficiency virus type 1 (HIV-1) env, nef and tat genes was used in mice in a prime-boost immunization regimen with the corresponding recombinant proteins. The genetic immunogen was delivered with a gene gun and the proteins were injected intramuscularly together with the adjuvant AS02A. Immunizations were followed by experimental challenge with pseudotyped HIV-1...
The study was designed to evaluate a novel cationic lipid DNA adjuvant (N3) and its function for HIV-1gp160/rev DNA plasmid delivered intranasally. The primary N3/HIV-DNA plasmid immunizations were boosted intranasally with a gp41 peptide in a anionic L3 adjuvant. This novel prime-boost strategy of mucosal immunization provided a broad HIV-1 envelope specific immunity, and recognition of viruses of...
We evaluated the compound imiquimod as a possible adjuvant for DNA immunization against human immunodeficiency virus (HIV). We found that gene-gun epidermal delivery of the DNA in combination with imiquimod resulted in the strongest HIV specific immune responses. The effect of imiquimod was further compared to that of recombinant granulocyte macrophage-colony stimulating factor (GM-CSF), a known DNA...
DNA immunization permits evaluation of possible antagonistic or synergistic effects between the encoded components. The protein expression capacity in vitro was related to the immunogenicity in vivo of plasmids encoding the HIV-1 regulatory genes tat rev, and nef. Neither Tat nor Rev expression was influenced by co-expression in vitro of all three proteins, while Nef expression was slightly inhibited...
An inactivating mutation in the human CCR5 gene reduces the risk of HIV-1 infection in individuals with homozygous alleles. We explored whether genetic immunization would induce an immune response directed to CCR5 structures and if immunological tolerance toward endogenous CCR5 could be broken. We also studied whether this immunization approach could protect cynomolgus monkeys from an infection, with...
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