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Arsenite, which crosses the blood-brain barrier, shows synergistic effects with radiation in vitro and in vivo. The mechanism remains unclear.\nMATERIALS AND METHODS:\nAs synergistic radiosensitization has been reported in p53-deficient cancer cells, radiosensitization was evaluated using the glioblastoma cell line, U87MG-E6, which harbors inactivated p53, in comparison with the cell line, HCT116 p53 (-/-). Radiosensitivity was evaluated using clonogenic assays and detection of abnormal amplification of centrosomes (AAC).\nRESULTS:\nSynergistic effects of arsenite on radiosensitivity were observed in both cell lines. The radiosensitization induced by arsenite was abolished by N-acetyl-l-cysteine, a reactive oxygen species (ROS) scavenger. Increased radiosensitivity by arsenite was also abolished following knock-down of BRCA2. 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Synergistic Effects of Arsenite on Radiosensitization of Glioblastoma Cells
https://repo.qst.go.jp/records/49036
https://repo.qst.go.jp/records/490368b95991c-01a9-4c7b-a97e-03b7428e9f48
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-11-14 | |||||
タイトル | ||||||
タイトル | Synergistic Effects of Arsenite on Radiosensitization of Glioblastoma Cells | |||||
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 |
二宮, 康晴
× 二宮, 康晴× 于, 冬× 関根, 絵美子× 中島, 徹夫× Ninomiya, Yasuharu× Yu, Dong× Sekine, Emiko× Nakajima, Tetsuo |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | BACKGROUND/AIM: Glioblastoma is a frequent type of brain tumor and is radioresistant. Arsenite, which crosses the blood-brain barrier, shows synergistic effects with radiation in vitro and in vivo. The mechanism remains unclear. MATERIALS AND METHODS: As synergistic radiosensitization has been reported in p53-deficient cancer cells, radiosensitization was evaluated using the glioblastoma cell line, U87MG-E6, which harbors inactivated p53, in comparison with the cell line, HCT116 p53 (-/-). Radiosensitivity was evaluated using clonogenic assays and detection of abnormal amplification of centrosomes (AAC). RESULTS: Synergistic effects of arsenite on radiosensitivity were observed in both cell lines. The radiosensitization induced by arsenite was abolished by N-acetyl-l-cysteine, a reactive oxygen species (ROS) scavenger. Increased radiosensitivity by arsenite was also abolished following knock-down of BRCA2. In addition, the increased radiosensitization by arsenite was correlated with AAC, which was abolished by BRCA2 knock-down. CONCLUSION: We conclude that radiosensitization by arsenite is related to ROS and BRCA2 function. |
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書誌情報 |
Anticancer research 巻 37, 号 8, p. 4111-4117, 発行日 2018-05 |
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出版者 | ||||||
出版者 | International Institute of Anticancer Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0250-7005 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 28739695 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.21873/anticanres.11798 |