No coin nor oath required. For personal study only.
For the study of circulating as well as tissue infiltrating T cells methods would be desireable to expand clones of such cells under well defined conditions. However, conventional T cell cloning procedures include the addition of irradiated mixed feeder cells, which introduce undefined cell bound and secreted signals. In this study we report the longterm cloning of human resting peripheral blood CD4POSCD45ROneg T cells I under feeder celi free conditions in response to CD3 and CD28 stimulation in the presence of exogenous IL-2. Cloning of additional cvtokines IL-1 and IL-6. Single cell PCR revealed M 0 I e C U I a r B i o t h e rap y efficiency ranged from 40% to 60% depending on the presence and that transcriptibn of IL-2 occurred in cellsustimulated through CD3 plus CD28 alone. T cells grown in response to CD3 plus CD28 plus IL-2 stimulation produced both IL-4 and IFN-y upon restimulation (Tho cells), but could be functionally Ped i at r i c On col ogy differentiated into n l or m type cells by the addition of IFN-y or IL-4, respectively, during cell cloning. minimal defined signal conditions and should provide the means of expanding T cells of healthy and diseased human tissues for further functional study.
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Our objechves include: i) determirung correlations between Wilms' tumor-specific molecular genehc events and clinicopathologc features; (ii) identifyrig hrther DNA/chromosomal aberrations; and (iii) establishing a Wilms' tumor tissue bank. To this end, a Witms' tumor biology protocol has been develo