Journal
CURRENT OPINION IN HIV AND AIDS
Volume 5, Issue 5, Pages 386-390Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/COH.0b013e32833cfe4c
Keywords
adenovirus; HIV-1; vaccine
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Funding
- National Institutes of Health [AI066305, AI066924, AI078526, AI084794]
- Bill and Melinda Gates Foundation
- Henry M. Jackson Foundation
- Ragon Institute of MGH, MIT, and Harvard
- NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES [R01AI084794, U19AI066305, U19AI078526, R01AI066924] Funding Source: NIH RePORTER
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Purpose of review Recombinant adenovirus (rAd) vectors have emerged as promising vaccine platform technologies due to their capacity to elicit potent humoral and cellular immune responses to encoded antigens. These vectors are being explored as potential vaccine candidates for a variety of pathogens. This review summarizes current efforts to develop rAd vector-based vaccines for HIV-1. Recent findings In the phase 2b Step study, rAd5 vectors expressing clade B HIV-1 Gag, Pol, and Nef antigens failed to afford protection and may have resulted in increased HIV-1 acquisition in certain subgroups. Recent studies have explored the potential reasons for this failure and the utility of novel rAd vectors derived from non-Ad5 serotypes. Summary Current areas of active investigation include the development of alternative serotype rAd vectors, the incorporation of rAd vectors into heterologous vector prime-boost regimens, and the use of rAd vectors to express novel HIV-1 antigens. These HIV-1 vaccine candidates will be evaluated in clinical trials over the next several years.
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