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Mutagenic potential of 8-oxo-7,8-dihydroguanine (8-oxoG) is influenced by nearby clustered lesions
https://repo.qst.go.jp/records/49149
https://repo.qst.go.jp/records/491491ad2b0f9-6006-481e-a580-2633dd580dcd
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-08-28 | |||||
タイトル | ||||||
タイトル | Mutagenic potential of 8-oxo-7,8-dihydroguanine (8-oxoG) is influenced by nearby clustered lesions | |||||
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 |
鹿園, 直哉
× 鹿園, 直哉× 赤松, 憲× 鹿園 直哉× 赤松 憲 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Ionizing radiation causes various different types of DNA damage. If not repaired, DNA damage can have detrimental effects. Previous studies indicate that the spatial distribution of DNA lesions induced by ionizing radiation is highly relevant to the ensuing biological effects. Clustered DNA damage, consisting of DNA lesions in close proximity, has been studied in detail, and has enhanced mutagenic potential depending on the configuration of the lesions. However, it is not known whether clustered DNA damage affects the mutagenic potential of a sufficiently separated, isolated lesion. Using synthetic damage constructs, we investigated the mutagenic potential of an isolated 8-oxo-7,8-dihydroguanine (8-oxoG) separated by at least 7 bp from other lesions. Under the spatial distribution of DNA lesions tested in the present study, neighboring clustered DNA lesions likely retarded the processing of the isolated 8-oxoG and resulted in enhanced mutation frequency. However, the enhanced mutagenic potential was dependent on which strand the isolated 8-oxoG was located. Our results indicate that the processing of a bi-stranded cluster could affect the mutagenic outcome of a nearby isolated lesion, separated up to ~20 bp. | |||||
書誌情報 |
Mutation Research (Fundamental and Molecular Mechanisms of Mutagenesis) 巻 810, p. 6-12, 発行日 2018-07 |
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出版者 | ||||||
出版者 | Elsevier | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.mrfmmm.2018.05.001 |