电场对ERK动态的调制显示了对波形和时间的依赖
Minxi Hu1, Houpu Li2, Kan Zhu3
1School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287, USA.
Scientific reports
|February 7, 2024
概括
电场 (EF) 通过影响ERK通路来影响细胞行为. 这项研究揭示了上皮细胞对交流电 (AC) EF的两相反应,揭示了细胞控制的新机制.
科学领域:
- 细胞生物物理学 细胞生物物理学
- 分子生物学分子生物学
- 信号传输 信号传输
背景情况:
- 外源电场 (EF) 可以调节细胞迁移,增殖和发育.
- 关于EF对细胞膜,特别是不可激发细胞的影响机制尚不清楚.
- 细胞膜相互作用对于理解EF诱导的细胞反应至关重要.
研究的目的:
- 为了研究电场 (EF) 与细胞膜之间的静电合.
- 阐明暴露于交流电流 (AC) 的上皮细胞中ERK信号通路的双相反应EF.
- 确定涉及EF介导ERK路径调节的潜在分子机制.
主要方法:
- 使用过电涂层的微电子来消除法拉代的过程,并专注于静电EF效应.
- 应用交流电 (AC) EF刺激,使用不同的值,波形和时间对MCF10A上皮细胞.
- 进行阻塞试验并监测细胞膜上的活性Ras,以评估途径的参与.
主要成果:
- 在上皮细胞中观察到独特的双相ERK信号响应 (抑制和激活阶段) 对AC EF.
- 确定了AC EF的较低和较高的值,这些值分别触发了不同的抑制和激活阶段.
- 证明EF波形和时间影响双相ERK响应,表明静电和消散相互作用.
- 证实了表皮生长因子受体 (EGFR) 和Ras在EF诱导的ERK通路动态中的参与.
结论:
- 提出依赖频率的介电松作为将EF能量与细胞膜合的关键机制.
- 强调EGFR和Ras在调解EF诱导的复杂ERK信号动态中的作用.
- 建议理解这些EF细胞膜相互作用可以导致精确的细胞行为的时间和空间控制.
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