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Vaccination with Tat Toxoid Attenuates Disease in Simian/HIV-challenged Macaques

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Specialty Science
Date 2000 Mar 22
PMID 10725402
Citations 33
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Abstract

The Tat protein is essential for HIV type 1 (HIV-1) replication and may be an important virulence factor in vivo. We studied the role of Tat in viral pathogenesis by immunizing rhesus macaques with chemically inactivated Tat toxoid and challenging these animals by intrarectal inoculation with the simian/human immunodeficiency virus 89.6PD. Immune animals had significantly attenuated disease with lowered viral RNA, interferon-alpha, and chemokine receptor expression (CXCR4 and CCR5) on CD4(+) T cells; these features of infection have been linked to in vitro effects of Tat and respond similarly to extracellular Tat protein produced during infection. Immunization with Tat toxoid inhibits key steps in viral pathogenesis and should be included in therapeutic or preventive HIV-1 vaccines.

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References
1.
Lu Y, Pauza C, Lu X, Montefiori D, Miller C . Rhesus macaques that become systemically infected with pathogenic SHIV 89.6-PD after intravenous, rectal, or vaginal inoculation and fail to make an antiviral antibody response rapidly develop AIDS. J Acquir Immune Defic Syndr Hum Retrovirol. 1998; 19(1):6-18. DOI: 10.1097/00042560-199809010-00002. View

2.
Steger K, Waterman P, Pauza C . Acute effects of pathogenic simian-human immunodeficiency virus challenge on vaccine-induced cellular and humoral immune responses to Gag in rhesus macaques. J Virol. 1999; 73(3):1853-9. PMC: 104425. DOI: 10.1128/JVI.73.3.1853-1859.1999. View

3.
Barillari G, Gendelman R, Gallo R, Ensoli B . The Tat protein of human immunodeficiency virus type 1, a growth factor for AIDS Kaposi sarcoma and cytokine-activated vascular cells, induces adhesion of the same cell types by using integrin receptors recognizing the RGD amino acid sequence. Proc Natl Acad Sci U S A. 1993; 90(17):7941-5. PMC: 47263. DOI: 10.1073/pnas.90.17.7941. View

4.
van Baalen C, Pontesilli O, Huisman R, Geretti A, Klein M, de Wolf F . Human immunodeficiency virus type 1 Rev- and Tat-specific cytotoxic T lymphocyte frequencies inversely correlate with rapid progression to AIDS. J Gen Virol. 1997; 78 ( Pt 8):1913-8. DOI: 10.1099/0022-1317-78-8-1913. View

5.
Re M, Furlini G, Vignoli M, Ramazzotti E, Roderigo G, De Rosa V . Effect of antibody to HIV-1 Tat protein on viral replication in vitro and progression of HIV-1 disease in vivo. J Acquir Immune Defic Syndr Hum Retrovirol. 1995; 10(4):408-16. DOI: 10.1097/00042560-199512000-00003. View