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Highly Attenuated Rabies Virus Based Vaccine Vectors Expressing Simian-Human Immunodeficiency$Virus_{89.6P}$, Env and Simian Immunodeficiency$Virus_{mac239}$Gag Are Safe in Rhesus Macaques and Protect from an AIDS-like Disease
We analyzed the safety and immunogenicity of attenuated rabies virus vectors expressing simian-human immunodeficiency virus$(SHIV)-1_{89.6P}$, Env or simian immunodeficiency virus$(SIV)_{mac239}$Gag in rhesus macaques. Four test macaques were immunized with both vaccine constructs, and 2 control mac...
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Published in: | The Journal of infectious diseases 2007-04, Vol.195 (7), p.980-988 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | We analyzed the safety and immunogenicity of attenuated rabies virus vectors expressing simian-human immunodeficiency virus$(SHIV)-1_{89.6P}$, Env or simian immunodeficiency virus$(SIV)_{mac239}$Gag in rhesus macaques. Four test macaques were immunized with both vaccine constructs, and 2 control macaques received an empty rabies vector. Seroconversion against rabies virus glycoprotein (G) and$SHIV_{89.6P}$, Env was detected after the initial immunization, but no cellular responses against SHIV antigens were observed. HIV/SIV-specific immune responses were not enhanced by boosts with the same vectors. Therefore, we constructed vectors expressing$SHIV_{89.6P}$Env and$SIV_{mac239}$Gag in which the rabies G was replaced with the G protein of vesicular stomatitis virus (VSV). Two years after initial immunization, a boost with the rabies-VSV G vectors resulted in SIV/HIV-specific immune responses. Upon challenge with$SHIV_{89.6P}$test macaques controlled the infection, whereas control macaques had high levels of viremia and a profound loss of CD4⁺ T cells, with 1 control macaque dying of an AIDS-like disease. |
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ISSN: | 0022-1899 1537-6613 |
DOI: | 10.1086/512243 |