WEKO3
アイテム
Number of Fe Ion Traversals Through a Cell Nucleus for Mammalian Cell Inactivation Near the Bragg Peak
https://repo.qst.go.jp/records/48449
https://repo.qst.go.jp/records/484492e1d9b83-46ea-4b4c-9354-51f4c85be1f2
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-02-04 | |||||
| タイトル | ||||||
| タイトル | Number of Fe Ion Traversals Through a Cell Nucleus for Mammalian Cell Inactivation Near the Bragg Peak | |||||
| 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 |
Konishi, Teruaki
× Konishi, Teruaki× Takeyasu, Akihiro× Yasuda, Nakahiro× Natsume, Toshiyuki× Nakajima, Hiroshi× Matsumoto, Kenichi× Satou, Yukio× Furusawa, Yoshiya× Hieda, Kotaro× 小西 輝昭× 竹安 明弘× 安田 仲宏× 夏目 敏之× 中島 宏× 松本 健一× 佐藤 幸夫× 古澤 佳也× 檜枝 光太郎 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | HeLa and CHO-K1 cells were irradiated with Fe ions (1.14 MeV/nucleon) near the Bragg peak to determine how many ion traversals through a cell nucleus are necessary to induce cell inactivation. The ion traversals through a cell nucleus were visualized by immunostaining the phosphorylated histone H2AX (gamma-H2AX), as an indicator of DNA double strand breaks (DSBs), to confirm that DSBs are actually induced along every Fe ion traversal through the nucleus. The survival curves after irradiation with Fe ions decreased exponentially with the ion fluence without a shoulder. The inactivation cross sections calculated from the slope of the survival curves and the standard errors were 96.9 +/- 1.8 and 57.9 +/- 5.4 microm2 for HeLa and CHO-K1 cells, respectively, corresponding to 0.442 and 0.456 of the mean value of each cell nucleus area. Taking the distribution of the cell nucleus area into consideration with an equation proposed by Goodhead et al. (1980), which calculates the average number of lesions per single ion track through the average area of a sensitive organelle (mainly nucleus), these two ratios were converted to 0.705 and 0.659 for HeLa and CHO-K1 cells, respectively. These ratios were less than one, suggesting that the average numbers of lethal hits per cell produced by a single ion traversal were less than one. We thus considered two possible explanations for ion traversals of more than one, necessary for cell inactivation. | |||||
| 書誌情報 |
Journal of Radiation Research 巻 46, 号 4, p. 415-424, 発行日 2005-12 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0449-3060 | |||||
| PubMed番号 | ||||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 16394632 | |||||
