一种新的高效分子用于光遗传和化学遗传控制,由FRET扩大生物发光驱动
bioRxiv : the preprint server for biology
|July 10, 2023
概括
生物发光光遗传学 (BL-OG) 能够对神经活动进行双重光和化学遗传控制. 一种新型的LuMinOpsin (LMO7) 显著提高了BL-OG的疗效,改善了神经调制和行为控制.
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
- 生物技术是生物技术.
背景情况:
- 生物发光光遗传学 (BL-OG) 提供了一种用于神经活动操纵的多功能方法.
- 卢明奥普辛 (LuMinOpsins,简称LMO) 是单个执行分子,可实现光遗传和化学遗传的控制.
- 提高化学遗传激活效率对于推进BL-OG实用性至关重要.
研究的目的:
- 在BL-OG框架内提高化学遗传激活的疗效.
- 为优化生物发光驱动的素激活设计新型光酶.
- 开发一种优质的LMO变体,以增强神经控制.
主要方法:
- 开发了用于福斯特共振能量转移 (FRET) 的新型光酶.
- 将 luciferase 与 mNeonGreen 融合,以创建明亮的,光谱调节的生物发光发射器.
- 针对Volvox Channelrhodopsin 1 (VChR1) 的激活,优化了发射器.
主要成果:
- 产生了一种新的LMO变体LMO7,显示出优异的BL驱动的光素激活.
- 与LMO3和其他变体相比,LMO7表现出显著增强的神经元活动调制.
- 证明了有效的ex vivo和in vivo神经调制和行为控制与LMO7.
结论:
- 报告LMO7作为一种强大的多式联络神经控制的新选择.
- 为未来的BL-OG改进制定了一个有前途的工程战略.
- 强调了BL-OG在先进神经科学研究和治疗应用中的潜力.
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