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- W2065946908 abstract "Ex vivo expansion of T cells is a key step of many cellular immunotherapy protocols, which require large numbers of immune cells to eradicate malignant or virally infected cells. The use of stirred culture systems for T cell expansion offers many potential advantages over the static culture systems commonly used today, including homogeneity of culture conditions, ease of sampling, and implementation of control systems. Primary human T cells as well as the transformed TALL103/2 T cell line were cultured in 100-mL spinner flasks as well as 2-L bioreactors to investigate the effects of shear forces produced by agitation and sparging-based aeration on the expansion of T cells. Primary T cells could be successfully grown at agitation rates of up to 120 rpm in the spinner flasks and to 180 rpm in the bioreactors with no immediate detrimental effects on proliferation. Exposure to agitation and sparging did, however, cause a significantly increased rate of downregulation of the interleukin-2 receptor (IL-2R), resulting in lower overall expansion potential from a single stimulation as compared to static controls, with faster IL-2R downregulation occurring at higher agitation rates. For the primary T cells, no significant effects of agitation were found on expression levels of other key surface receptors (CD3, CD28, or CD62L) examined. No significant effects of agitation were observed on primary T cell metabolism or levels of cellular apoptosis in the cultures. The TALL103/2 T cell line was found to be extremely sensitive to agitation, showing severely reduced growth at speeds above 30 rpm in 100-mL spinner flasks. This unexpected increased fragility in the transformed T cell line as compared to primary T cells points out the importance of carefully selecting a model cell line which will accurately represent the characteristics of the cell system of interest." @default.
- W2065946908 created "2016-06-24" @default.
- W2065946908 creator A5012390434 @default.
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- W2065946908 date "2000-05-05" @default.
- W2065946908 modified "2023-10-14" @default.
- W2065946908 title "Culture of human T cells in stirred bioreactors for cellular immunotherapy applications: Shear, proliferation, and the IL-2 receptor" @default.
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- W2065946908 doi "https://doi.org/10.1002/(sici)1097-0290(20000505)68:3<328::aid-bit11>3.0.co;2-v" @default.
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