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2004: Paterson Yvonne; Johnson Ross S
Progress towards the use of Listeria monocytogenes as a live bacterial vaccine vector for the delivery of HIV antigens.
Expert review of vaccines 2004;3(4 Suppl):S119-34.
Listeria monocytogenes is a facultative intracellular bacterium that enters the cell by phagocytosis after which it colonizes the cytosol of the host cell. It is thus a potent vaccine vector for the presentation of passenger antigens to the major histocompatability complex class II and class I pathways of antigen processing and presentation. This article shall review the progress made in developing this unusual bacterium as a vaccine vector. In mouse models, recombinant Listeria carrying a number of different antigens have been shown to provide protective immunity against infectious organisms and therapeutic immunity directed towards tumor-associated antigens. Listeria has been engineered to express a number of HIV/SIV antigens. Measurements of immune responses using these recombinant strains in the mouse, after oral and parenteral immunization, and in the rhesus macaque after oral immunization indicate that strong cell-mediated immunity can be induced against these antigens. This review also discusses safety issues associated with live bacterial vaccine vectors and problems to be overcome in developing Listeria as a HIV vaccine for human use.

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