{"title":"不同动物来源细胞株o6 -甲基鸟嘌呤甲基转移酶活性及细胞对烷基化剂敏感性的比较分析","authors":"Mituo Ikenaga , Tohru Tsujimura , Hae-Ryong Chang , Chikau Fujio , Yang-Pei Zhang , Kanji Ishizaki , Hiroko Kataoka , Akihiro Shima","doi":"10.1016/0167-8817(87)90073-3","DOIUrl":null,"url":null,"abstract":"<div><p>Using 26 cultured cell lines derived from 17 different animal species, we have measured both the activity of <em>O</em><sup>6</sup>-methylguanine (O<sup>6</sup>-MeG) methyltransferase (MT) in cell extracts and the sensitivity of the strains to the lethal effects of the alkylating agents, <em>N</em>-methyl-<em>N</em>′-nitro-<em>N</em>-nitrosoguanidine (MNNG) and 1-(4-amino-2-methyl-5-pyrimidinyl)methyl-3-(2-chloroethyl)-3-nitrosourea (ACNU). The MT activity was assayed by measuring the amount of <sup>3</sup>H radioactivity transferred from methyl-[<sup>3</sup>H]-labeled O<sup>6</sup>-MeG in DNA to acceptor protein molecules in the extracts. In all the 21 mammalian cell strains, lethal sensitivity to ACNU as measured by colony-forming ability correlated well with cellular MT activity, indicating that the major lethal ACNU damage is reparable by the MT. On the other hand, MNNG sensitivity did not necessarily correlate with the MT activity.</p></div>","PeriodicalId":100936,"journal":{"name":"Mutation Research/DNA Repair Reports","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1987-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-8817(87)90073-3","citationCount":"27","resultStr":"{\"title\":\"Comparative analysis of O6-methylguanine methyltransferase activity and cellular sensitivity to alkylating agents in cell strains derived from a variety of animal species\",\"authors\":\"Mituo Ikenaga , Tohru Tsujimura , Hae-Ryong Chang , Chikau Fujio , Yang-Pei Zhang , Kanji Ishizaki , Hiroko Kataoka , Akihiro Shima\",\"doi\":\"10.1016/0167-8817(87)90073-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Using 26 cultured cell lines derived from 17 different animal species, we have measured both the activity of <em>O</em><sup>6</sup>-methylguanine (O<sup>6</sup>-MeG) methyltransferase (MT) in cell extracts and the sensitivity of the strains to the lethal effects of the alkylating agents, <em>N</em>-methyl-<em>N</em>′-nitro-<em>N</em>-nitrosoguanidine (MNNG) and 1-(4-amino-2-methyl-5-pyrimidinyl)methyl-3-(2-chloroethyl)-3-nitrosourea (ACNU). The MT activity was assayed by measuring the amount of <sup>3</sup>H radioactivity transferred from methyl-[<sup>3</sup>H]-labeled O<sup>6</sup>-MeG in DNA to acceptor protein molecules in the extracts. In all the 21 mammalian cell strains, lethal sensitivity to ACNU as measured by colony-forming ability correlated well with cellular MT activity, indicating that the major lethal ACNU damage is reparable by the MT. On the other hand, MNNG sensitivity did not necessarily correlate with the MT activity.</p></div>\",\"PeriodicalId\":100936,\"journal\":{\"name\":\"Mutation Research/DNA Repair Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1987-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0167-8817(87)90073-3\",\"citationCount\":\"27\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mutation Research/DNA Repair Reports\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0167881787900733\",\"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/DNA Repair Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0167881787900733","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Comparative analysis of O6-methylguanine methyltransferase activity and cellular sensitivity to alkylating agents in cell strains derived from a variety of animal species
Using 26 cultured cell lines derived from 17 different animal species, we have measured both the activity of O6-methylguanine (O6-MeG) methyltransferase (MT) in cell extracts and the sensitivity of the strains to the lethal effects of the alkylating agents, N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) and 1-(4-amino-2-methyl-5-pyrimidinyl)methyl-3-(2-chloroethyl)-3-nitrosourea (ACNU). The MT activity was assayed by measuring the amount of 3H radioactivity transferred from methyl-[3H]-labeled O6-MeG in DNA to acceptor protein molecules in the extracts. In all the 21 mammalian cell strains, lethal sensitivity to ACNU as measured by colony-forming ability correlated well with cellular MT activity, indicating that the major lethal ACNU damage is reparable by the MT. On the other hand, MNNG sensitivity did not necessarily correlate with the MT activity.
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