DNA vaccination of macaques by a full-genome SHIV plasmid that has an IL-2 gene and produces non-infectious virus particles

• Published in: Vaccine 2006-04, Vol.24 (17), p.3677-3685
• Main Authors: Horiuchi, Reii, Akahata, Wataru, Kuwata, Takeo, Enose, Yoshimi, Ido, Eiji, Suzuki, Hajime, Miyake, Ariko, Saito, Naoki, Ibuki, Kentaro, Goto, Toshiyuki, Miura, Tomoyuki, Hayami, Masanori
• Format: Article
• Language: English
• Subjects: Acquired immune deficiency syndrome; AIDS; AIDS Vaccines - immunology; Animals; Applied microbiology; Atoms & subatomic particles; Biological and medical sciences; CD4 Lymphocyte Count; Cercopithecus aethiops; COS Cells; Cytokines; Deoxyribonucleic acid; DNA; DNA vaccine; Female; Fundamental and applied biological sciences. Psychology; Genes; Genome, Viral; Genomes; Health sciences; Heterologous challenge; HIV; HIV Antibodies - blood; HIV Envelope Protein gp160 - immunology; HIV-1 - immunology; Human immunodeficiency virus; Human immunodeficiency virus 1; Human viral diseases; Infectious diseases; Interleukin-2 - genetics; Lymphocytes; Macaca; Macaca mulatta; Medical sciences; Mice; Microbiology; Mutation; Plasmids; Plasmids - genetics; Proteins; Simian immunodeficiency virus; Simian Immunodeficiency Virus - immunology; Simian/human immunodeficiency virus; Studies; Vaccination; Vaccines; Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects); Vaccines, DNA - immunology; Viral diseases; Viral diseases of the lymphoid tissue and the blood. Aids; Virion - physiology
• ISSN: 0264-410X; 1873-2518
• DOI: 10.1016/j.vaccine.2005.07.006

We previously reported that a mutant full-sized plasmid DNA vaccine regime in macaques was effective against a homologous challenge [Akahata W, Ido E, Shimada T, Katsuyama K, Yamamoto H, Uesaka H, et al. DNA vaccination of macaques by a full genome HIV-1 plasmid which produces non-infectious virus particles. Virology 2000;275:116–24; Akahata W, Ido E, Akiyama H, Uesaka H, Enose Y, Horiuchi R, et al. DNA vaccination of macaques by a full genome SHIV-1 plasmid that produces non-infectious virus particles. J Gen Virol 2003;84:2237–44]. In this study, to evaluate the DNA vaccination regime against a heterologous challenge, a novel plasmid named pSHIV-ZF1*IL-2 was constructed. Four monkeys were intramuscularly and intradermally injected four times with the pSHIV-ZF1*IL-2. Vaccinated monkeys were intravenously challenged with a highly pathogenic, heterologous SHIV at 11 weeks post vaccination. All the vaccinated monkeys suppressed the challenge virus rapidly under the detectable level by 16 weeks post challenge. One vaccinated monkey was protected from a loss of CD4+ T cells. These results suggest pSHIV-ZF1*IL-2 alone seems partially effective even against a challenge with a heterologous, pathogenic virus.