In vitro immunologic and virologic effects of interleukin 15 on peripheral blood mononuclear cells from normal donors and human immunodeficiency virus type 1-infected patients
| Autor: | Daniel R. Lucey, R J Paxton, Gene M. Shearer, Harold A. Kessler, F N Hashemi, G P Melcher, Ligia A. Pinto, F. R. Bethke, J Rusnak, Alan L. Landay, K Grabstein |
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| Rok vydání: | 1997 |
| Předmět: |
Microbiology (medical)
Interleukin 2 medicine.medical_treatment Clinical Biochemistry Immunology HIV Infections Biology Lymphocyte Activation Peripheral blood mononuclear cell Interferon-gamma medicine Humans Immunology and Allergy Interferon gamma Killer Cells Lymphokine-Activated Cells Cultured Interleukin-15 Lymphokine-activated killer cell Virology Cytokine Interleukin 15 HIV p24 Antigen HIV-1 Leukocytes Mononuclear Interleukin-2 Viral load Research Article medicine.drug |
| Zdroj: | Clinical Diagnostic Laboratory Immunology. 4:43-48 |
| ISSN: | 1098-6588 1071-412X |
| DOI: | 10.1128/cdli.4.1.43-48.1997 |
| Popis: | Interleukin 15 (IL-15) is a cytokine that shares receptor subunits and functional activity, such as T-cell and B-cell stimulation, with IL-2. The effect of IL-2 on immune function and human immunodeficiency virus (HIV) viral load in HIV-infected patients is being actively studied. Thus, we examined how IL-15 compares with IL-2 in several in vitro immunologic and virologic assays in order to explore whether a rationale exists for pursuing initial clinical therapeutic trials with IL-15. The effects of IL-15 on induction of lymphokine-activated killer (LAK) cells, gamma interferon (IFN-gamma) production from HIV-positive peripheral blood mononuclear cells (PBMCs), and HIV production from PBMCs were studied. Induction of LAK cells by IL-15 was found in eight of eight HIV-positive donors. Incubation of PBMCs from some donors with IL-15 (1, 10, 50, and 100 ng/ml) induced production of IFN-gamma. The effect of IL-15 was compared with that of IL-2 on HIV replication in PBMCs from five HIV-positive patients and four HIV-negative donors whose PBMCs were infected in vitro with HIV. Levels of HIV p24 antigen were moderately lower in the presence of 10 ng of IL-15 per ml than with 10 ng of IL-2 per ml, but they were similar for 100 and 500 ng of each cytokine per ml. In summary, IL-15 can induce LAK cell activity in HIV-seropositive patients and can stimulate IFN-gamma production from PBMCs of some donors. IL-15 stimulates levels of HIV production from PBMCs which are similar to or moderately lower than those obtained with IL-2, depending on cytokine concentration. |
| Databáze: | OpenAIRE |
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