Genetic predisposition to the cytotoxicity of arsenic: the role of DNA damage and ATM.

Abstract excerpt

Arsenic is a pervasive cytotoxin and carcinogen in the environment. Although its mode of action has yet to be fully elucidated, oxidative DNA damage has been suggested. A series of DNA repair-defective human and hamster cell lines associated with sensitivity to oxidative agents were examined for their response to arsenic-induced cytotoxicity. Only the Ataxia telangiectasia (AT) cells displayed a marked...

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