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| 题名: | Monte Carlo Simulation of Double-Strand Break Induction and Conversion after Ultrasoft X-rays Irradiation |
| 作者: | Hsiao, YY;Chen, FH;Chan, CC;Tsai, CC |
| 关键词: | DSB induction;ultrasoft X-rays;DNA repair;enzymatic DSB |
| 日期: | 2021 |
| 上传时间: | 2022-08-05T09:44:20Z (UTC)
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| 出版者: | MDPI |
| 摘要: | This paper estimates the yields of DNA double-strand breaks (DSBs) induced by ultrasoft X-rays and uses the DSB yields and the repair outcomes to evaluate the relative biological effectiveness (RBE) of ultrasoft X-rays. We simulated the yields of DSB induction and predicted them in the presence and absence of oxygen, using a Monte Carlo damage simulation (MCDS) software, to calculate the RBE. Monte Carlo excision repair (MCER) simulations were also performed to calculate the repair outcomes (correct repairs, mutations, and DSB conversions). Compared to Co-60 gamma-rays, the RBE values for ultrasoft X-rays (titanium K-shell, aluminum K-shell, copper L-shell, and carbon K-shell) for DSB induction were respectively 1.3, 1.9, 2.3, and 2.6 under aerobic conditions and 1.3, 2.1, 2.5, and 2.9 under a hypoxic condition (2% O-2). The RBE values for enzymatic DSBs were 1.6, 2.1, 2.3, and 2.4, respectively, indicating that the enzymatic DSB yields are comparable to the yields of DSB induction. The synergistic effects of DSB induction and enzymatic DSB formation further facilitate cell killing and the advantage in cancer treatment. |
| URI: | http://dx.doi.org/10.3390/ijms222111713
https://www.webofscience.com/wos/woscc/full-record/WOS:000718491500001
https://ir.csmu.edu.tw:8080/handle/310902500/23879 |
| 關聯: | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ,2021,v22,issue 21 |
| 显示于类别: | [中山醫學大學研究成果] 期刊論文
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