使用微波辐射的加速蛋白质保留扩张显微镜.
Meghan R Bullard1, Juan Carlos Martinez-Cervantes1, Norisha B Quaicoe1
1Department of Biology, Georgetown University, Washington, DC 20057, USA.
Cell reports methods
|November 23, 2024
概括
微波辅助膨胀显微镜 (ExM) 显著减少了组织成像的协议时间,从几天减少到几个小时. 这种优化的方法保持了高纳米分辨率,并提高了各种生物体的扩张效率.
科学领域:
- 细胞生物学 细胞生物学
- 显微镜技术 显微镜技术
- 神经科学是一个神经科学.
背景情况:
- 扩展显微镜 (ExM) 通过同位素扩展的固定组织在常规显微镜上实现纳米级成像 (<70 nm).
- 标准的ExM协议是漫长的,通常需要几天才能完成.
- 高效的ExM对于高分辨率的生物研究至关重要.
研究的目的:
- 调整和优化ExM协议以更快地处理生物样本.
- 调查微波 (M/W) 辅助在加速ExM工作流程中的有效性.
- 为了证明M/W辅助ExM (M/W-ExM) 协议在不同物种和组织类型中的适用性.
主要方法:
- 适应的ExM为vibratome切割的Xenopus laevis头的大脑.
- 实施微波 (M/W) 辐射,以创建一个快速的M/W-ExM协议.
- 将M/W-ExM协议应用于整个山上的Drosophila melanogaster大脑.
主要成果:
- 减少了Xenopus脑组织的ExM工作流程时间,从几天减少到几个小时.
- 实现了与标准ExM相比较的超级纳米分辨率.
- 观察到M/W-ExM的扩张幅度增加.
- 成功地将Drosophila IHC-ExM的处理时间从6天减少到2天.
结论:
- 微波辅助ExM (M/W-ExM) 在保持高分辨率的同时显著加速了ExM协议.
- M/W 辐射似乎增强了组织扩张过程.
- M/W-ExM协议可以适应不同的生物和组织类型,提高实验效率.
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