马克西姆:具有高度控制镜的多角度交叉结构化照明显微镜,用于活细胞的3D拓映射
Pedro Felipe Gardeazabal Rodriguez1, Yigal Lilach2, Abhijit Ambegaonkar3
1Department of Anatomy and Cell Biology, George Washington University, School of Medicine and Health Sciences, Washington, DC, USA.
Communications biology
|October 12, 2023
概括
本研究介绍了多角度交叉结构化照明显微镜 (MAxSIM) 用于在活细胞中高准确度的3D等离子膜映射. 马克西姆实现纳米分辨率,使细胞结构的详细可视化.
科学领域:
- 细胞生物学 细胞生物学
- 显微镜的使用方法
- 生物物理学的生物物理.
背景情况:
- 三维结构照明显微镜 (3D-SIM) 提供了更好的分辨率,但不足以可视化纳米级等离子体膜结构.
- 轴性干涉测量方法可以确定纳米级轴性蛋白质位置,但缺乏横向超分辨率.
研究的目的:
- 开发一种新的显微镜技术,用于活细胞等离子体膜的高保真纳米级3D拓映射.
- 将超高分辨率的横向成像与精确的轴向定位相结合,以增强可视化.
主要方法:
- 通过将2D-SIM与轴性干扰计集成,开发了多角度交叉结构化照明显微镜 (MAxSIM).
- 利用定制的高度控制镜 (HCM) 来增强轴向定位和对两个细胞表面的成像.
- 从杂的实验数据中进行高度重建的优化算法.
主要成果:
- 马克西姆实现了近乎实时 (大约. 用纳米尺度的3D拓映射对活细胞进行0.5赫兹) 的成像.
- 该技术提供了等离子体膜结构的高保真可视化.
- 启用了3D单分子跟踪,具有增强的分辨率.
结论:
- 与HCM一起的MAXSIM显著提高了在纳米级活细胞中绘制3D等离子体膜拓学的能力.
- 这种方法通过可视化细细胞结构,为细胞生物学提供了前所未有的洞察力.
- 马克西姆是活细胞成像和分子追踪研究的强大工具.
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