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The association of DNA-dependent protein kinase activity with chromosomal instability and risk of cancer
https://repo.qst.go.jp/records/45230
https://repo.qst.go.jp/records/45230d1924630-8bd5-4052-a973-862b91cd99bc
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2008-07-23 | |||||
タイトル | ||||||
タイトル | The association of DNA-dependent protein kinase activity with chromosomal instability and risk of cancer | |||||
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 |
Someya, Masanori
× Someya, Masanori× Sakata, Koh-ichi× Matsumoto, Yoshihisa× Yamamoto, Hiroyuki× Monobe, Manami× Ikeda, Hideyuki× Ando, Koichi× Hosoi, Yoshio× Suzuki, Norio× Hareyama, Masato× 松本 義久× 物部 真奈美× 安藤 興一× 細井 義夫× 鈴木 紀夫 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The DNA double-strand breaks (DSBs) repair pathway has been implicated in maintaining genomic integrity via suppression of chromosomal rearrangements. DNA-dependent protein kinase (DNA-PK) has an important role with DNA Dabs repair. In this study, 93 of untreated cancer patients and 41 of cancer-free healthy volunteers were enrolled. Peripheral blood was collected, separated and centrifuged; DNA-PK activity was measured by DNA-pull-down assay. The expression of DNA-PKcs, Ku70 and Ku86 were examined by RT-PCR assay and western blotting. Chromosomal aberrations were examined by cytogenetic methods. DNA-PK activities of peripheral blood lymphocytes (PBL) in patients with uterine cervix or breast cancer were significantly lower than those in normal volunteers. Age and smoking had no association with DNA-PK activity, whereas DNA-PK activity and the expression of Ku70, Ku86 and DNA-PKcs in RT-PCR were interrelated. A similar tendency was seen in western blot assay but less clear than in RT-PCR. Therefore, the association between DNA-PK activity and expression of DNA-PK in protein level could not be concluded. The frequency of chromosome aberration, such as dicentric chromosomes and excess fragment increased as the DNA-PK activity decreased. In conclusion, DNA-PK activity is associated with chromosomal instability. DNA-PK activity in PBL is associated with risk of breast and uterine cervix cancer. DNA-PK activity in PBL can be used to select individuals for whom an examination should be performed because of their increased susceptibility to breast and uterine cervix cancer. | |||||
書誌情報 |
Carcinogenesis 巻 27, 号 1, p. 117-122, 発行日 2006-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0143-3334 |