扩展辅助选择平面照明显微镜用于厘米尺度组织的纳米尺度成像
bioRxiv : the preprint server for biology
|July 10, 2023
概括
研究人员开发了一种扩展辅助选择性平面照明显微镜 (ExA-SPIM),用于大规模,高分辨率的生物成像. 这种新的显微镜使得像老鼠大脑这样的整个器官能够在前所未有的规模上进行详细的可视化.
科学领域:
- 生物物理学的生物物理.
- 神经科学是一个神经科学.
- 显微镜的使用方法
背景情况:
- 组织处理和显微镜方面的进步使得高分辨率成像成为可能.
- 绘制大型生物样本的图像需要具有大视野和高吞吐量的显微镜.
- 目前的方法在完整的3D组织中面临规模和分辨率的限制.
研究的目的:
- 为大规模,高分辨率的分子成像引入一种新的显微镜系统.
- 克服现有显微镜对厘米尺度生物样本成像的局限性.
- 为了使整个大脑的神经回路的详细重建.
主要方法:
- 扩展辅助选择平面照明显微镜 (ExA-SPIM) 的开发.
- 集成先进的组织清除和扩张技术.
- 具有大视野和工作距离的高速成像.
主要成果:
- 在10.6x8.0mm2的视野中,ExA-SPIM实现了1x1x3μm的分辨率.
- 在扩展4倍后,对厘米尺度样本 (例如,整个老鼠大脑) 进行成像,分辨率为250x250x750nm.
- 在速度高达946兆瓦克塞尔/秒的情况下,不进行切割的高对比成像.
结论:
- ExA-SPIM提供了前所未有的功能,用于3D成像大型生物样本.
- 该系统能够对整个大脑的神经结构进行详细的可视化.
- 这项技术促进了神经科学和其他生物领域的发现.
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