一个实验和理论研究的细胞胀,由电穿孔诱导的透失衡的细胞胀
Kun Qian1, Yancheng Wang1, Yizhen Lei1
1State Key Laboratory of Power Transmission Equipment Technology, School of Electrical Engineering, Chongqing University, No.174 Shazhengjie Road, Chongqing 400044, China.
Bioelectrochemistry (Amsterdam, Netherlands)
|January 12, 2024
概括
脉冲电场 (PEF) 破坏细胞膜,改变离子运输和细胞体积. 一个新的多物理模型准确地预测了这些变化,有助于药物输送和瘤研究.
科学领域:
- 生物物理学的生物物理.
- 细胞力学 细胞力学
- 电穿孔是一种电子穿孔.
背景情况:
- 细胞膜调节物质交换.
- 脉冲电场 (PEF) 诱导了膜的透性,导致了透失衡.
- 了解PEF影响对于药物输送等应用至关重要.
研究的目的:
- 开发一种模拟细胞对微秒脉冲电场 (μsPEFs) 的电机反应的多物理模型.
- 研究电穿孔密度如何影响离子扩散和细胞度.
- 验证模型对细胞体积变化的预测能力.
主要方法:
- 开发了一种多物理模型,其中包含了电孔密度依赖的扩散系数.
- 应用了范特霍夫理论来建模细胞度,并将其转换为用于细胞胀的环应力.
- 使用假定实验和模拟验证了模型.
主要成果:
- 该模型准确地预测了在低压条件下 (200mOsm/kg) 细胞半径增加14.2%.
- 模拟显示μsPEFs诱导了179.95 Pa hoop压力和11.0%的细胞半径增加正常盐水.
- 该模型成功预测了由于PEF诱导的透失衡导致的动态细胞体积变化.
结论:
- 开发的多物理模型准确地预测了PEF暴露后的细胞体积动态.
- 这种模型为了解PEF-细胞相互作用提供了有价值的工具.
- 这些发现对优化药物输送系统和调节瘤微环境有意义.
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