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Porcine circovirus type 2 (PCV2) causes porcine circovirus-associated disease. Capsid (Cap) protein of PCV2 is the principal immunogenic protein that induces neutralizing antibodies and protective immunity. GM-CSF is an immune adjuvant that enhances responses to vaccines. In this study, recombinant baculoviruses Ac-Cap and Ac-Cap-GM-CSF expressing the Cap protein alone and co-expressing the Cap protein...
Oral, replication-competent Ad-HIV vaccines are advancing to human trials. Previous evaluation of protective efficacy in non-human primates has primarily followed upper respiratory tract administrations. Here we compared sequential oral (O/O) versus intranasal/oral (I/O) priming of rhesus macaques with Ad5 host range mutant-SIV recombinants expressing SIV env/rev, gag, and nef genes followed by boosting...
Although replication-competent adenovirus (Ad) vectors are promising in AIDS vaccine design, their safety in immune compromised hosts is unknown. To initially address this question, enteric-coated tablets containing a replicating Ad vector were orally administered to SHIV- and SIV-infected rhesus macaques with normal, intermediate or low CD4 T cell counts and stable disease. The vector was detected...
Previous non-human primate studies have shown replication competent adenovirus (Ad) HIVenv/rev and SIVenv/rev recombinants to be promising vaccine candidates. To broaden induced immunity in rhesus macaques, an Ad type 5 host range (Ad5hr) mutant vector with an inserted SIV gag gene was added to the vaccine regimen. Immunity to the encoded SIV Env, Rev, and Gag gene products was evaluated following...
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