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在受到电脉冲影响的癌细胞膜上计算跨膜电压:使用分子动力学和有限元素模拟
Salim Mirshahi1,2, Behzad Vahedi3, Saeed Oraee Yazdani4
1Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran. salim.mirshahi@uconn.edu.
Journal of molecular modeling
|June 21, 2024
概括
电穿孔利用电场在细胞膜中产生暂时的孔隙. 这项研究使用有限元法 (FEM) 和分子动力学 (MD) 来分析诱导的跨膜电压 (ITV) 和细胞电穿孔.
科学领域:
- 生物物理学的生物物理.
- 计算生物学 计算生物学
- 细胞生物学 细胞生物学
背景情况:
- 电穿孔是一种通过电场诱导细胞膜透性的方法.
- 这项研究使用有限元法 (FEM) 研究在球形MCF-7细胞中诱导的跨膜电压 (ITV).
- 模拟表面导电性以表示细胞膜的屏障功能.
研究的目的:
- 在球形细胞模型中确定静止诱导的跨膜电压 (ITV).
- 在不同的电场下,评估ITV在细胞膜上的分布和最大值.
- 为了研究在电穿孔过程中脂质双层和毛孔形成的分子变化.
主要方法:
- 使用有限元法 (FEM) 来建模诱导的跨膜电压 (ITV).
- 用分子动力学 (MD) 模拟来分析脂质双层 (棕) 中的孔形成 (palmitoyloleoyl-phosphatidylcholine).
- 适应性神经模糊推理系统 (ANFIS) 用于预测电解后的癌细胞活力.
主要成果:
- FEM和MD模拟显示显著的细胞表面电穿孔 (分别为68%和66%) 在1500V/cm.
- 医学模拟显示了脂质双层中具有1.33纳米半径的水友毛孔.
- 值跨膜电压值被确定为700mV (MD) 和739mV (FEM).
结论:
- 该研究使用FEM和MD成功模拟了电穿孔,提供了对细胞膜通透性的见解.
- 数字方法准确地预测了细胞表面电穿孔和孔隙形成的程度.
- 确定的 ITV 值对于优化各种应用中的电穿孔协议至关重要.
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