Modification of glucocorticoid sensitivity by MAP kinase signaling pathways in glucocorticoid-induced T-cell apoptosis
2006
Objective Glucocorticoid is widely used for the treatment of diseases such as hematological malignancies. Glucocorticoid sensitivity is different from person to person and the mechanism of the regulation of glucocorticoid sensitivity is not well known. Glucocorticoid resistance is a major clinical problem. Methods and Results Here, using glucocorticoid-induced T-cell apoptosis, a model system for the analysis of the mechanism of glucocorticoid action, we clarified that mitogen-activated protein kinases (MAPKs) modify glucocorticoid sensitivity, namely that the activation of extracellular signal–regulated protein kinase (ERK) and p38 MAP kinase reduce and enhance glucocorticoid sensitivity, respectively. Conclusion These findings might provide new tools for overcoming glucocorticoid-resistance.
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