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
Adam Glaser1, Jayaram Chandrashekar1, Sonya Vasquez1
1Allen Institute for Neural Dynamics, Seattle, United States.
eLife
|June 30, 2025
概括
我们开发了一种新的显微镜ExA-SPIM,用于对大型生物样本进行高分辨率成像. 这项技术能够对整个器官进行详细的可视化,比如老鼠大脑,从而推进神经科学研究.
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:
- 组织处理和显微镜技术的进步使得分折分辨率成像成为可能.
- 绘制大型完好无损的生物组织图像需要具有大视野和高吞吐量的显微镜.
研究的目的:
- 介绍一款新的扩展辅助选择平面照明显微镜 (ExA-SPIM).
- 为了展示生物样本的高分辨率,大规模成像.
主要方法:
- 开发了具有大视野 (10.6x8.0 mm2) 和工作距离 (35 mm) 的ExA-SPIM.
- 整合了新的组织清除和扩张技术,以实现4倍的扩张.
- 实现的成像速度高达946兆瓦克塞尔/秒.
主要成果:
- ExA-SPIM提供1.5微米x1.5微米x3微米的无偏差分辨率.
- 启用对厘米尺度样本的成像,包括整个老鼠大脑,侧向分辨率为375nm,轴向分辨率为750nm.
- 成功重建了老鼠大脑中的单个神经元,并可视化了和人类的神经结构.
结论:
- ExA-SPIM可提供完整的生物组织的高分辨率,大规模的分子成像.
- 这项技术推动了神经科学等领域的生物发现.
- 能够对不同物种的神经回路和结构进行详细的可视化.
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