Enter the text here that is the new abstract information for your application. This section must be no E 0 longer than 30 lines of text. The key to understanding the results of the STEP/Phambili trials is first to model the results of the trial in controlled experiments using mucosal SIV inoculation of rhesus macaques. Thus, we will determine the effectiveness and potential of the Merck trivalent HIV adenovirus 5 vector vaccine (V520) for enhancing susceptibility to S1V in a rhesus macaque model of mucosal HIV transmission. If models of vaccine protection or enhancement are established, the immune mechanisms and inflammation/activation associated with any protective or enhancing effects can be defined in a renewal application. 0'Qvic' am- .,c vii
Understanding the reasons for the failure of the once promising Merck Ad5 HIV vaccine is critical before proceeding with additional HIV vaccine trials. Without a complete understanding of the failed STEP/Phambili trials, the next clinical trial of a HIV vaccine willl be truly empirical human experimentation rather than a rational next step in vaccine development. This we have proposed animal model studies to characterize the virologya nd immunology of the Step/pahmbili trials.
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McChesney, Michael B; Miller, Christopher J (2013) New directions for HIV vaccine development from animal models. Curr Opin HIV AIDS 8:376-81 |
Qureshi, Huma; Ma, Zhong-Min; Huang, Ying et al. (2012) Low-dose penile SIVmac251 exposure of rhesus macaques infected with adenovirus type 5 (Ad5) and then immunized with a replication-defective Ad5-based SIV gag/pol/nef vaccine recapitulates the results of the phase IIb step trial of a similar HIV-1 vaccine. J Virol 86:2239-50 |
Ma, Zhong-Min; Keele, Brandon F; Qureshi, Huma et al. (2011) SIVmac251 is inefficiently transmitted to rhesus macaques by penile inoculation with a single SIVenv variant found in ramp-up phase plasma. AIDS Res Hum Retroviruses 27:1259-69 |