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Recent insights into the mechanism of glucocorticosteroid-induced apoptosis Distelhorst CWCell Death Differ 2002[Jan]; 9 (1): 6-19Glucocorticosteroid hormones induce apoptosis in lymphocytes. Therefore, glucocorticoids are commonly used as immunosuppressive and chemotherapeutic agents. This review examines many facets of the process by which glucocorticoids induce apoptosis. This process is divided into three stages, an initiation stage that involves glucocorticoid receptor-mediated gene regulation, a decision stage that involves the counterbalancing influence of prosurvival and proapoptotic factors, and the execution stage which involves caspase and endonuclease activation. Many aspects of glucocorticoid-induced apoptosis, such as mitochondrial dysfunction and caspase activation, are important steps in virtually all forms of apoptosis. But the process glucocorticoid-induced apoptosis differs from other forms of apoptosis in terms of initiation at the transcriptional level and involvement of the multicatalytic proteasome and calcium. Moreover, the abundant opportunity for crosstalk between the glucocorticoid receptor and other signaling pathways increases the complexity of glucocorticoid-induced apoptosis and its regulation.|Animals[MESH]|Apoptosis/drug effects/*physiology[MESH]|Caspases/*metabolism[MESH]|Cysteine Endopeptidases/*metabolism[MESH]|Glucocorticoids/*pharmacology[MESH]|Humans[MESH]|Leukemia/metabolism[MESH]|Lymphoma/metabolism[MESH]|Mitochondria/*physiology[MESH]|Multienzyme Complexes/*metabolism[MESH]|Proteasome Endopeptidase Complex[MESH]|Proto-Oncogene Proteins c-bcl-2/*metabolism[MESH] |
