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Indirect mechanisms of genomic instability and the biological significance of mutations at tandem repeat loci
https://repo.qst.go.jp/records/44967
https://repo.qst.go.jp/records/449670121f0e2-ebc3-43c9-bfcf-266817cce64a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-09-06 | |||||
| タイトル | ||||||
| タイトル | Indirect mechanisms of genomic instability and the biological significance of mutations at tandem repeat loci | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Niwa, Ohtsura
× Niwa, Ohtsura× 丹羽 太貫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radiation induction of genomic instability has two features: induction of untargeted mutation and delayed mutation. These phenomena have been studied mostly in tissue culture cells, but analyses have also been conducted in whole body systems. The study of response in whole body systems frequently applies repeat sequences as markers to detect mutations. These studies have generated conflicting findings. In addition, lack of knowledge of the mechanisms involved in repeat mutation confounds the interpretation of the biological significance of increased rates of repeat mutation. In this review, some of the existing controversies of genomic instability are discussed in relation to the mechanism of repeat mutation. Analyses of published and unpublished studies indicate a mechanistic similarity between radiation-induced genomic instability at repeat loci and dynamic mutations of triplet repeats. Because of their repetitive nature, repeat sequences frequently block progression of replication forks and are consequently resolved by slippage and/or recombination. Irradiation of cells induces S checkpoints and promotes slippage/recombination mediated repeat mutations. Thus, genomic instability at repeat loci might be viewed as a consequence of cellular attempts to restore the stability of replication in the face of the stalled replication fork; this process can occur both spontaneously as well as after exposure to radiation. | |||||
| 書誌情報 |
Fundamental and Molecular Mechanisms of Mutagenesis : A Section of Mutation Research 巻 598, 号 1/2, p. 61-72, 発行日 2006-06 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0027-5107 | |||||
