Determination of O^6-Methylguanine in DNA by High-Performance Liquid Chromatography with Electrochemical Detection
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概要
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O^6-Methylguanine (O^6-MeGua), formed in calf thymus DNA by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) or N-methyl-N-nitrosourea (MNU) in vitro was determined by high-performance liquid chromatography (HPLC) with electrochemical detection. The DNA treated with MNNG or MNU was hydrolyzed to nucleic bases under a mild acidic condition. O^6-MeGua was separated from abundant normal adenine and guanine bases with a Sep-Pak C_<18> cartridge prior to HPLC analysis. With the cartridge, the peak areas of adenine and guanine bases decreased less than 0.3% as compared to those without clean-up process, although the recovery of O^6-MeGua through the clean-up process was more than 96%. The amount of O^6-MeGua formed from 1μg of DNA treated with 7.3 nmol of MNNG and 14.7 nmol of MNU was 9.66 and 11.1 pmol, respectively.
- 公益社団法人日本薬学会の論文
- 1996-08-31
著者
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山岸 直子
Kyoto Pharmaceutical University
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笠井 映江
Kyoto Pharmaceutical University
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天野 準人
Kyoto Pharmaceutical University
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加治 真由美
Kyoto Pharmaceutical University
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渡辺 徹志
Kyoto Pharmaceutical University
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平山 晃久
Kyoto Pharmaceutical University
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笠井 映江
京都薬科大学公衆衛生学教室
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