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A candidate DNA vaccine pTHgagC expressing the immunodeficiency virus-1 (HIV-1) gag gene from South African isolate Du422 was constructed and characterised. The isolate was selected on the basis of being the closest to the South African subtype C consensus sequence. Sequence analysis of cytotoxic T lymphocyte (CTL) epitopes showed that HIV subtype C-infected individuals have CTL responses to a number...
Without going into the details of the devastation that human immunodeficiency virus (HIV) infection causes especially in the developing world, the best hope for changing the course of this epidemic is development of a safe, effective, accessible prophylactic HIV vaccine. While the inaccessibility of potentially neutralising epitopes on primary HIV isolates has hampered the development of envelope-based...
Development of an HIV vaccine presents a formidable challenge. One of the unresolved, yet central issues is the importance of HIV variability. Here we argue that even with the recent focus on the induction of T cell-mediated immunity, HIV vaccines should match the local circulating HIV clades. Whether used alone or in a combination with vaccines eliciting HIV-neutralizing antibodies, efforts must...
The potential of building multi-cytotoxic T lymphocyte (CTL) epitope antigens in combination with the nucleic acid immunization technology is explored for development of acquired immunodeficiency syndrome (AIDS) and malaria vaccines. A novel minimal vector pTH for direct gene transfer was constructed for efficient expression of vaccine antigens and used as a vehicle for human immunodeficiency virus...
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