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- W1975271230 abstract "To investigate the ability of granulocyte-macrophage colony-stimulating factor (GM-CSF) and IFN-alpha to induce the differentiation of peripheral monocytes into dendritic cells (DC) and their ability to trigger an HIV-specific CD8 T-cell response.Monocytes isolated from both seronegative controls and HIV-infected individuals were differentiated into DC using GM-CSF with either IL-4 or IFN-alpha for 7 days. We assessed the phenotypic characteristics and IL-12 production by flow cytometry. The ability of DC to trigger CD8 T-cell responses was assessed by means of ELISpot and cytotoxicity assays. In addition, HIV-1-RNA levels were measured in culture supernatants.Compared with control DC generated in the presence of GM-CSF and IL-4, DC generated in the presence of GM-CSF and IFN-alpha expressed higher levels of MHC class I molecules and produced similar or higher levels of IL-12 after CD40 ligation or Staphyloccus aureus Cowan stimulation. GM-CSF/IFN-alpha DC expressed low levels of CD4, CXCR4 and DC-SIGN and did not produce detectable virus during the differentiation period. Pulsed GM-CSF/IFN-alpha DC were found to prime CD8 T cells from HIV-negative controls to exert cytotoxic activity against target cells expressing HIV antigens. HIV peptide-pulsed GM-CSF/IFN-alpha DC promote specific IFN-gamma production by autologous CD8 T cells from HIV-seronegative donors. Furthermore, GM-CSF/IFN-alpha DC from HIV-seropositive patients efficiently present HIV peptides to autologous CD8 T lymphocytes.GM-CSF and IFN-alpha allow the generation of DC with high CD8 T-cell stimulating abilities. Therefore, this strategy may represent a novel approach to therapeutic vaccination in HIV disease." @default.
- W1975271230 created "2016-06-24" @default.
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- W1975271230 date "2003-08-01" @default.
- W1975271230 modified "2023-10-11" @default.
- W1975271230 title "Dendritic cells generated in the presence of granulocyte-macrophage colony-stimulating factor and IFN-α are potent inducers of HIV-specific CD8 T cells" @default.
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- W1975271230 doi "https://doi.org/10.1097/00002030-200308150-00002" @default.
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