{"title":"小鼠/黑猩猩杂交小鼠NORS的抑制作用:关于R48-26细胞系的报道。","authors":"P Cavagna, R Marzella, M Rocchi, B Chiarelli","doi":"10.1023/b:scam.0000007133.59395.8a","DOIUrl":null,"url":null,"abstract":"<p><p>We present the first documented NOR suppression in a hybridoma other than man-mouse for the hamster-chimpanzee hybrid cell line R48-26. Alu PCR and chromosome painting showed that in this cell line chimpanzee chromosomes 13-15-23 are maintained. NORs on chimpanzee chromosomes 15-23, whose presence was directly verified by FISH with H 28s rDNA, resulted inactive while telomeric rDNA on hamster chromosomes resulted active even if hamster chromosomes presented extensive rearrangements. We observed an all or nothing model in accordance with a model of regulation by selective transcriptional factors. The rearrangements of hamster chromosomes have not involved the location of NORs because they maintain a telomeric position.</p>","PeriodicalId":21884,"journal":{"name":"Somatic Cell and Molecular Genetics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/b:scam.0000007133.59395.8a","citationCount":"0","resultStr":"{\"title\":\"Suppression of chimpanzee NORS in hamster/chimpanzee hybrid: report on cell line R48-26.\",\"authors\":\"P Cavagna, R Marzella, M Rocchi, B Chiarelli\",\"doi\":\"10.1023/b:scam.0000007133.59395.8a\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We present the first documented NOR suppression in a hybridoma other than man-mouse for the hamster-chimpanzee hybrid cell line R48-26. Alu PCR and chromosome painting showed that in this cell line chimpanzee chromosomes 13-15-23 are maintained. NORs on chimpanzee chromosomes 15-23, whose presence was directly verified by FISH with H 28s rDNA, resulted inactive while telomeric rDNA on hamster chromosomes resulted active even if hamster chromosomes presented extensive rearrangements. We observed an all or nothing model in accordance with a model of regulation by selective transcriptional factors. The rearrangements of hamster chromosomes have not involved the location of NORs because they maintain a telomeric position.</p>\",\"PeriodicalId\":21884,\"journal\":{\"name\":\"Somatic Cell and Molecular Genetics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1023/b:scam.0000007133.59395.8a\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Somatic Cell and Molecular Genetics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1023/b:scam.0000007133.59395.8a\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Somatic Cell and Molecular Genetics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1023/b:scam.0000007133.59395.8a","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Suppression of chimpanzee NORS in hamster/chimpanzee hybrid: report on cell line R48-26.
We present the first documented NOR suppression in a hybridoma other than man-mouse for the hamster-chimpanzee hybrid cell line R48-26. Alu PCR and chromosome painting showed that in this cell line chimpanzee chromosomes 13-15-23 are maintained. NORs on chimpanzee chromosomes 15-23, whose presence was directly verified by FISH with H 28s rDNA, resulted inactive while telomeric rDNA on hamster chromosomes resulted active even if hamster chromosomes presented extensive rearrangements. We observed an all or nothing model in accordance with a model of regulation by selective transcriptional factors. The rearrangements of hamster chromosomes have not involved the location of NORs because they maintain a telomeric position.
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