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使用增强型MRI可视化基于磁遗传的神经调节

Brianna Ricker¹, Nir Dayan¹, Galit Pelled^2,3

¹Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI.

bioRxiv : the preprint server for biology

|July 16, 2025

概括

电磁场激活电磁感知基因 (EPG) 蛋白质,可以增强细胞中离子 (Mn2+) 的吸收. 这一发现支持使用增强型MRI来监测EPG.

科学领域:

神经科学是一个神经科学.
生物物理学的生物物理.
分子生物学分子生物学

背景情况:

电磁感知基因 (EPG) 蛋白质正在研究其作为磁遗传工具的潜力.
电磁场 (EMF) 激活EPG影响细胞内水平.
了解EPG与其他离子的相互作用对于其在神经调节中的应用至关重要.

研究的目的:

为了研究EPG对离子 (Mn2+) 动态的影响.
探索使用增强型MRI (MEMRI) 来监测EPG活动的潜力.
建立EPG作为神经调节的磁遗传工具.

主要方法:

用化 (MnCl2) 处理表达EPG的HEK293FT细胞,并用电磁场刺激.
细胞溶解物经过T1地图测量以量化细胞内Mn2+的存在.
进行了对照实验,以验证EPG对Mn2+动态的影响.

主要成果:

与对照细胞相比,表达EPG的细胞在刺激后表现出明显较低的T1值.
这表明EPG表达细胞的细胞内Mn2+吸收增加.
EPG的EMF激活直接影响Mn2+的动态.

结论:

EPG的磁性激活增强了细胞的Mn2+吸收.
证明了EPG对神经元功能相关的离子的影响.
通过MEMRI,有可能监测EPG的神经调节活性.

关键词:

磁性遗传学磁性遗传学增强型核磁共振成像 (MEMRI)通过神经调节进行神经调节.

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