Casein Kinase 2 Regulates Both Apoptosis and the Cell Cycle Following DNA Damage Induced by 6-Thioguanine

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Casein kinase 2 regulates both apoptosis and the cell cycle following DNA damage induced by 6-thioguanine.

PURPOSE The purine antimetabolite, 6-thioguanine (6-TG), is an effective drug in the management of acute leukemias. In this study, we analyze the mechanisms of apoptosis associated with 6-TG treatment and casein kinase 2 (CK2 or CKII) in human tumor cells. EXPERIMENTAL DESIGN Small interfering RNA and chemical CK2 inhibitors were used to reduce CK2 activity. Control and CK2 activity-reduced c...

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BRCA1 activates a G2-M cell cycle checkpoint following 6-thioguanine-induced DNA mismatch damage.

Human DNA mismatch repair (MMR) is involved in the response to certain chemotherapy drugs, including 6-thioguanine (6-TG). Consistently, MMR-deficient human tumor cells show resistance to 6-TG damage as manifested by a reduced G(2)-M arrest and decreased apoptosis. In this study, we investigate the role of the BRCA1 protein in modulating a 6-TG-induced MMR damage response, using an isogenic hum...

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NFATc1 regulates the transcription of DNA damage-induced apoptosis suppressor

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ژورنال

عنوان ژورنال: Clinical Cancer Research

سال: 2005

ISSN: 1078-0432,1557-3265

DOI: 10.1158/1078-0432.ccr-04-1734