Variability and regulation of O6-alkylguanine-DNA alkyltransferase.
نویسندگان
چکیده
O(6)-Alkylguanine-DNA alkyltransferase (ATase) confers resistance to many of the biological effects of certain classes of alkylating agents by repairing the DNA lesions responsible. The role of ATase in the mutagenic and toxic effects of the carcinogenic and antitumour alkylating agents are of interest in relation to the prevention and treatment of cancer in man. In this commentary we specifically focus on the variation in ATase levels and our current understanding of the factors involved in the regulation of ATase expression.
منابع مشابه
Efficient repair of O6-ethylguanine, but not O4-ethylthymine or O2-ethylthymine, is dependent upon O6-alkylguanine-DNA alkyltransferase and nucleotide excision repair activities in human cells.
The formation and persistence of O6-ethylguanine, O4-ethylthymine, and O2-ethylthymine were quantitated in the genomic DNA of human lymphoblasts exposed to 1.0 mM N-ethyl-N-nitrosourea using immunoslot-blot. The three cell lines used included one which lacks O6-alkylguanine-DNA alkyltransferase, one deficient in nucleotide excision repair, and a third which is competent in both of these repair ...
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ورودعنوان ژورنال:
- Carcinogenesis
دوره 24 4 شماره
صفحات -
تاریخ انتشار 2003