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- W2078992149 abstract "Chimeric antigen receptor (CAR) T cells are a novel immunotherapy for cancer. To achieve anti-tumor efficacy, these cells must survive, expand, and persist after infusion into patients, functions that are reportedly best achieved by cells with a stem or central-memory rather than effector-memory phenotype. We have developed third-generation CAR T cells specific for the tumor-associated antigen GD2 for use in a phase I clinical trial. We investigated the optimal cell culture conditions for CAR T-cell production, and here we describe the relative effects of 3 activation and cytokine conditions on CAR T-cell expansion, effector function and phenotype.Peripheral blood mononuclear cells were activated by anti-CD3 and anti-CD28 or anti-CD3 and Retronectin. Activated cells were transduced with the CAR-encoding retroviral vector and expanded in either interleukin (IL)-2 or IL-7 and IL-15. Immune phenotype and expansion were tracked throughout the culture, and transduction efficiency, and subsequent GD2-specific effector functions were evaluated by flow cytometry and cytotoxic T lymphocytes assay.CD3/Retronectin stimulation with IL-2 resulted in poorer activation, expansion and Th1 cytokine secretion of CAR T cells than CD3/CD28 stimulation with either IL-2 or IL-7 and IL-15. However, CAR T cells cultured in CD3/CD28/IL7/IL-15 and CD3/Retronectin/IL-2 had superior cytotoxic T lymphocyte activity and a more stem-like phenotype.The combination of CD3 and CD28 with IL-7 and IL-15 gave the best balance of CAR T-cell expansion and potent GD2-specific effector functions while retaining a stem/memory phenotype, and these growth conditions will therefore be used to manufacture CAR T cells for our phase I clinical trial." @default.
- W2078992149 created "2016-06-24" @default.
- W2078992149 creator A5021075431 @default.
- W2078992149 creator A5081571370 @default.
- W2078992149 date "2015-04-01" @default.
- W2078992149 modified "2023-10-03" @default.
- W2078992149 title "Different cytokine and stimulation conditions influence the expansion and immune phenotype of third-generation chimeric antigen receptor T cells specific for tumor antigen GD2" @default.
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- W2078992149 doi "https://doi.org/10.1016/j.jcyt.2014.12.002" @default.
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