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- W1992017528 abstract "In patients with lymphopenia following allogeneic stem cell transplantation adenovirus (ADV) infection is associated with high morbidity and mortality despite aggressive antiviral drug therapy. Virus-specific T cells seem to be essential for virus elimination. The aim of this study was to isolate and expand donor-derived human ADV-specific T lymphocytes for adoptive transfer of sufficient cell numbers to restore protective immunity after allogeneic stem cell transplantation.A clinical-grade strategy to generate ADV-specific T cells using the interferon-gamma (IFN-gamma) secretion assay, followed by expansion to numbers sufficient for clinical application with interleukin-2 (IL-2) and feeder cell stimulation, is described.A mean number of 3.4 x 10(6) (+/-3 SD) ADV antigen-specific T lymphocytes were isolated from 0.1 to 2 x 10(9) mononuclear cells from peripheral blood (n=5) or leukapheresis products (n=6). Characterization of ADV-specific T cells after isolation revealed a mean purity of 85.1% (+/-12% SD) using antigen-specific intracellular cytokine staining. Isolated cells were expanded ex vivo for a median of 18 days (range 7-29 days; n=5) to greater than 10(8) total cells using IL-2 and autologous feeder cell stimulation. ADV-specific response to adenovirus antigen was confirmed in the generated T cell lines, using intracellular cytokine staining, IFN-gamma Elispot assay, and (3)H-thymidine uptake. Generated T-cell lines showed specific killing of ADV-infected B-LCL (n=4). Alloreactive proliferation of generated T-cell lines in mixed lymphocyte cultures was significantly reduced when compared to unmanipulated PBMCs.Generation of adenovirus-specific T cells in a simple and rapid clinical-grade protocol was established, using IFN-gamma secretion assay with short expansion times, leading to sufficient numbers of ADV-specific T cells that can be used for adoptive immunotherapy." @default.
- W1992017528 created "2016-06-24" @default.
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- W1992017528 date "2004-03-01" @default.
- W1992017528 modified "2023-10-16" @default.
- W1992017528 title "Isolation and expansion of human adenovirus–specific CD4+ and CD8+ T cells according to IFN-γ secretion for adjuvant immunotherapy" @default.
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- W1992017528 doi "https://doi.org/10.1016/j.exphem.2003.12.009" @default.
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