Geant4-脱氧核糖核酸模拟辐射诱导的脱氧核糖核酸损伤在人类癌症细胞系
Chee Keat Ying1, Dousatsu Sakata2, M Arif Efendi3
1Department of Biomedical Imaging, Advanced Medical and Dental Institute, University of Science Malaysia, Kepala Batas, Penang, Malaysia.
Journal of medical physics
|October 30, 2025
概括
使用Geant4-DNA的蒙特卡洛模拟量化了癌细胞中辐射诱导的DNA损伤. 离子束显示出对癌症治疗的潜力,尽管双链断裂产量与实验数据不同.
科学领域:
- 医学物理 医学物理
- 辐射生物学 辐射生物学
- 计算生物学 计算生物学
背景情况:
- 电离辐射通过直接和间接途径诱导DNA损伤.
- 了解辐射诱导的DNA损伤对于推进癌症治疗至关重要.
- 离子束正在被探索其在充电粒子癌症治疗中的潜力.
研究的目的:
- 用蒙特卡洛模拟来研究和量化来自离子束的生物反应和DNA损伤.
- 评估离子束在癌症治疗中的潜在益处.
- 分析DNA损伤的终点,如单链断裂 (SSB) 和双链断裂 (DSB) 的比率.
主要方法:
- 使用Geant4-DNA蒙特卡洛工具包进行模拟.
- 模拟了MCF-7乳腺腺癌癌细胞系.
- 用不同线性能量转移 (LET) 的离子束辐射细胞系.
主要成果:
- 损害产量和SSB/DSB比率与已发表的模拟研究一致.
- 与已发表研究中的实验数据相比,模拟的DSB收益率更高.
- 证明了Geant4-DNA在机械理解和DNA损伤量化方面的能力.
结论:
- 巨型4-DNA模拟为辐射诱导的DNA损伤提供了宝贵的机械洞察力.
- 人类癌细胞系中DNA损伤的量化是使用MC技术可行的.
- 需要进一步的研究来协调模拟结果与DSB产量的实验发现.
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