Relationship between the radiosensitizing effect of wortmannin, DNA double-strand break rejoining, and p21WAF1 induction in human normal and tumor-derived cells.

Abstract

Wortmannin (WM) is a potent inhibitor of the catalytic sub-unit of DNA-PK, which is involved in one pathway of DNA double-strand break (DSB) rejoining, and of ATM, which functions upstream in the p53 signaling pathway. WM is known to be an efficient radiosensitizer in a variety of mammalian cell types, to inhibit DSB rejoining following exposure to… (More)

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