使用200kV传输电子显微镜实现高质量的断层数据采集,采用双电容透镜系统的双电容透镜系统.
Lihong Chen1, Zhuofan Fang2, Qi Wen3
1Department of Obstetrics and Gynecology, Center for Reproductive Medicine, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital; Medical and Health Analysis Center, Peking University Health Science Center.
Journal of visualized experiments : JoVE
|February 23, 2026
概括
本研究详细介绍了一种高分辨率冷电子断层扫描 (cryo-ET) 数据收集的成本效益高的方法,使用Glacios显微镜上的开源SerialEM软件. 这种方法提高了结构生物学研究的可访问性.
科学领域:
- 结构生物学 结构生物学
- 生物物理学的生物物理.
- 显微镜的使用方法
背景情况:
- 低温电子断层扫描 (cryo-ET) 提供了对细胞组件的近原生结构洞察力.
- 传统的冷ET方法通常依赖于昂贵的专有软件,限制了可访问性.
- 化ET中的高分辨率成像需要精确控制传输电子显微镜 (TEM) 条件.
研究的目的:
- 为冷电子断层扫描 (cryo-ET) 数据采集建立一个开源的,具有成本效益的工作流.
- 适应和校准SerialEM软件,以在Glacios 2冷TEM上收集高质量的断层扫描数据.
- 为了证明这个工作流的可行性,从样本准备到数据分析.
主要方法:
- 在Glacios 2冷TEM上安装和全面校准开源SerialEM软件.
- 开发用于冷电子断层扫描 (cryo-ET) 的自动化数据收集策略.
- 使用阿波费里丁作为工作流验证的模型样本,包括断层图像重建和亚断层图像分析.
主要成果:
- 在Glacios 2显微镜上成功实现了SerialEM用于自动化,高质量的冷电子断层扫描 (cryo-ET) 数据采集.
- 证明了完整的工作流程,产生高分辨率的断层图像并使分断层图像分析成为可能.
- 验证了开源方法的成本效益和可访问性.
结论:
- 开源软件SerialEM的集成为冷ET数据收集提供了一个可行的和经济的替代方案.
- 这种工作流显著降低了使用冷电子断层扫描 (cryo-ET) 进行高级结构研究的入门障碍.
- 这种方法使Glacios显微镜的实验室能够在没有专有软件的情况下进行高分辨率的冷ET.
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