期刊
VIRUS RESEARCH
卷 146, 期 1-2, 页码 1-12出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.virusres.2009.08.004
关键词
HIV subtypes; Vaccines; MVA; Nef; CMI
类别
资金
- National Research Council (CONICET) [6122, 579/06]
- Argentinean Agency for the Promotion of Science and Technology [34410]
- FIPSE of Spain
The HIV epidemic in Argentina is characterized by the high prevalence of infections caused by subtype B and BF variants. In this study, the Nef protein was used as a tool to study the impact of HIV-1 BF variants in the design of future vaccines. DNA and MVA vectors expressing Nef of the CRF12_BF recombinant form of HIV-1 were generated and characterized. After the administration of single DNAprime/MVAboost immunization schedules in Balb/c mice we found that NefBF delivered from these vectors generated a response of high specificity with low cross-reactivity against subtype B. But, when a more potent response was induced after 3 priming DNA doses and a booster with MVA virus, cross-reactivity against NefB was detected, although of lower magnitude than the NefBF specific. These results will be pivotal for vaccines designs in our region, indicating that antigens from these viral variants must be considered for a future vaccine. (C) 2009 Elsevier B.V. All rights reserved.
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