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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Multiple lymphokine production by a phorbol ester-stimulated mouse thymoma: relationship to cell cycle events.

Interleukin 2 (IL-2) production was studied in a subclone of the murine thymoma EL 4. Phenotypic characterization revealed the EL 4-17-2 line to be Thy-1.2+, Lyt-1.2+, and Lyt-2.2-. Costimulation with 500 ng 12-O-tetradecanoylphorbol 13-acetate (TPA)/ml and 5 micrograms concanavalin A (Con A)/ml induced optimal levels of IL-2. Three related phorbol esters stimulated comparable levels of IL-2 when used in conjunction with Con A. Kinetic experiments indicated that IL-2 first became detectable at 2 hours in TPA-treated cultures, whereas in cultures stimulated with Con A alone IL-2 production was not evident until 8 hours. Flow cytometry indicated that TPA and its related phorbol esters cause a perturbation in the cycling of the cell which may be related to increased IL-2 production. Under the conditions examined, no interferon-gamma (IFN-gamma) was detectable. Conversely, both granulocyte-macrophage colony-stimulating factor (CSF-GM) and interleukin-3 (IL-3) were found under conditions that led to stimulation of IL-2 synthesis. CSF-GM was produced in cultures treated singly with 500 ng TPA/ml or with Con A. IL-3 production was similar to IL-2 production, because optimal levels were found in cultures after combined treatment with phorbol ester and mitogen.[1]

References

  1. Multiple lymphokine production by a phorbol ester-stimulated mouse thymoma: relationship to cell cycle events. Pearlstein, K.T., Staiano-Coico, L., Miller, R.A., Pelus, L.M., Kirch, M.E., Stutman, O., Palladino, M.A. J. Natl. Cancer Inst. (1983) [Pubmed]
 
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