{"title":"哺乳动物染色质中DNA的氧化损伤","authors":"Miral Dizdaroglu","doi":"10.1016/0921-8734(92)90036-O","DOIUrl":null,"url":null,"abstract":"<div><p>Efforts have been made to characterize and measure DNA modifications produced in mammalian chromatin in vitro and in vivoby a variety of free radical-producing systems. Methodologies incorporating the technique of gas chromatography/mass spectrometry have been used for this purpose. A number of products from all four DNA bases and several DNA-protein cross-links in isolated chromatin have been identified and quantitated. Product formation has been shown to depend on the free radical-producing system and the presence or absence of oxygen. A similar pattern of DNA modifications has also been observed in chromatin of cultured mammalian cells treated with ionizing radiation or H<sub>2</sub>O<sub>2</sub> and in chromatin of organs of animals treated with carcinogenic metal salts.</p></div>","PeriodicalId":100937,"journal":{"name":"Mutation Research/DNAging","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0921-8734(92)90036-O","citationCount":"546","resultStr":"{\"title\":\"Oxidative damage to DNA in mammalian chromatin\",\"authors\":\"Miral Dizdaroglu\",\"doi\":\"10.1016/0921-8734(92)90036-O\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Efforts have been made to characterize and measure DNA modifications produced in mammalian chromatin in vitro and in vivoby a variety of free radical-producing systems. Methodologies incorporating the technique of gas chromatography/mass spectrometry have been used for this purpose. A number of products from all four DNA bases and several DNA-protein cross-links in isolated chromatin have been identified and quantitated. Product formation has been shown to depend on the free radical-producing system and the presence or absence of oxygen. A similar pattern of DNA modifications has also been observed in chromatin of cultured mammalian cells treated with ionizing radiation or H<sub>2</sub>O<sub>2</sub> and in chromatin of organs of animals treated with carcinogenic metal salts.</p></div>\",\"PeriodicalId\":100937,\"journal\":{\"name\":\"Mutation Research/DNAging\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0921-8734(92)90036-O\",\"citationCount\":\"546\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mutation Research/DNAging\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/092187349290036O\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mutation Research/DNAging","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/092187349290036O","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Efforts have been made to characterize and measure DNA modifications produced in mammalian chromatin in vitro and in vivoby a variety of free radical-producing systems. Methodologies incorporating the technique of gas chromatography/mass spectrometry have been used for this purpose. A number of products from all four DNA bases and several DNA-protein cross-links in isolated chromatin have been identified and quantitated. Product formation has been shown to depend on the free radical-producing system and the presence or absence of oxygen. A similar pattern of DNA modifications has also been observed in chromatin of cultured mammalian cells treated with ionizing radiation or H2O2 and in chromatin of organs of animals treated with carcinogenic metal salts.
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