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基因编码的明亮近红外光电压指示器的工程

Xian Xiao^1,2,3, Aimei Yang⁴, Hanbin Zhang^1,2,3

¹School of Life Sciences, Westlake University, Hangzhou 310024, China.

International journal of molecular sciences

|February 26, 2025

概括

研究人员通过改进 Archon1 传感器,开发了一种用于神经科学的更明亮的电压传感器 monArch. 虽然亮度高出9倍,但monArch需要进一步优化,以获得更好的膜定位和电压灵敏度.

科学领域:

神经科学是一个神经科学.
分子生物学分子生物学
生物物理学的生物物理.

背景情况:

基因编码的电压指示器 (GEVIs) 对实时神经元成像至关重要.
近红外GEVIs提供了诸如更好的组织透和光遗传学兼容性等优势.
以前开发的GEVIArchon1具有限制,包括低亮度和高照明要求.

研究的目的:

为了增强 Archon1 电压传感器的亮度.
开发一种具有提高神经元成像性能的新型GEVI.

主要方法:

微生物Rhodopsin Archaerhodopsin-3 (Arch-3) 的定向分子进化.
一个明亮的阿尔肯衍生物的随机突变.
一个新型变异的识别和特征,monArch.

主要成果:

确定了一种新的GEVI变体,monArch,与Archon1.1相比,基底亮度增加了9倍.
蒙阿奇表现出令人满意的电压灵敏度 (4-5% ΔF/F_AP).
蒙阿奇显示膜局部化低于最佳,电压敏感性受损.

结论:

蒙阿奇代表了GEVI亮度的显著进步.
需要进一步优化以平衡亮度,膜定位和电压灵敏度.
基于Rhodopsin的电压传感器的持续开发对于先进的神经科学研究至关重要.

关键词:

亮度亮度亮度亮度指导分子进化是指导分子进化.遗传编码的电压指示器接近红外的近红外线.摄影毒性摄影毒性罗多普辛 (Rhodopsin) 是一种植物.

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