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zeige Details Aidoo, Anane, Lyn-Cook, Lascelles E., ... Comparative study of intracellular glutathione content in rat lymphocyte cultures treated with 2-mercaptoethanol and interleukin-2
in: Cell biology and toxicology , ISSN 1573-6822, Vol. 7 (3. 1991), p. 215-227
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1991
Abstract The level of intracellular glutathione (GSH) in mitogen-stimulated mouse lymphocytes is increased in the presence of 2-mercaptoethanol (2-ME), an enhancer of lymphocyte activation and proliferation. Since proliferation of lymphocytes in response to mitogens involves direct activation by a mitogen followed by continued proliferation in response to interleukin-2 (IL-2), we have investigated the effect of 2-ME and exogenous IL-2 on the GSH content and cell proliferation of rat lymphocytes stimulated with phytohemagglutinin (PHA). PHA stimulation increased both GSH content and the magnitude of the proliferative response, as measured by thymidine incorporation into cellular DNA. However, incubation of stimulated lymphocytes with 2-ME or IL-2 for 72 hr produced a significant further elevation of GSH levels and thymidine incorporation. 2-ME also increased the GSH content in unstimulated cultures, but it had little effect on thymidine incorporation. IL-2 increased GSH content and decreased thymidine incorporation in unstimulated lymphocytes. Exposure of cells to DL-buthionine-(S,R)-sulfoximine (BSO), an inhibitor of GSH biosynthesis, significantly depleted GSH and lowered the proliferative response, suggesting a crucial role of de novo GSH synthesis for lymphocyte activation. The data suggest that both 2-ME and IL-2 promote lymphocyte proliferation, although the mechanisms by which intracellular GSH levels are increased by the agents are apparently different.
Copyright: Copyright 1991 Princeton Scientific Publishing Co., Inc
beteiligte Personen: Aidoo, Anane , Lyn-Cook, Lascelles E. , Morris, Suzanne M. , Kodell, Ralph L. , Casciano, Daniel A.
Format: Elektronisch
Erschienen: 1991.
Serie: Springer Online Journal Archives 1860-2000 [Dig. Serial]
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URL: http://dx.doi.org/10.1007/BF00250976

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