实验观察到脉冲持续时间,电场强度和细胞定向之间的复杂相互作用的表征,用时间依赖的非线性数值模型对电穿孔结果进行表征
Maria Scuderi1, Janja Dermol-Černe1, Tina Batista Napotnik1
1Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia.
Biomolecules
|May 27, 2023
概括
电穿孔是一种电子穿孔.
科学领域:
- 生物物理学的生物物理.
- 心血管科学 心血管科学
- 细胞生物学 细胞生物学
背景情况:
- 电穿孔增加了分子运输的细胞膜透性.
- 它正在开发用于非热心脏剥离治疗心律不整.
- 细胞方向影响电穿孔效应,但脉冲参数是关键.
研究的目的:
- 研究细胞定向和脉冲参数如何影响心肌细胞中的电穿孔.
- 根据这些因素,开发一个数值模型来预测电穿孔结果.
主要方法:
- 开发了一种依赖时间的非线性数值模型.
- 计算诱导的跨膜电压和孔形成.
- 与体外实验测量结果相符的模型结果.
主要成果:
- 与电场平行定向的电池在较低强度的脉冲持续时间≥10μs时进行电穿孔.
- 在较低强度的脉冲持续时间 (~100 ns) 时,细胞以垂直方向的垂直电穿孔.
- 垂直电池在较高电场强度下更容易受到影响,无论脉冲持续时间如何.
结论:
- 细胞定向对电穿孔的影响取决于脉冲参数.
- 数字建模和实验数据对齐,验证了发现.
- 结果有助于优化脉冲场切除和用于心脏治疗的基因疗法.
关键词:
不同类型的异型性异型性这是心肌细胞 (cardiomyocyte).细胞定向的方向 细胞定向电穿孔的电穿孔是什么有限元素模型的模型是有限的.细胞内的细胞内.致命的电场强度是致命的脉冲场移除过程中的脉冲场移除时间域 时间域 时间域更多相关视频
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