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Video-rate confocal microscopy for single-molecule imaging in live cells and superresolution fluorescence imaging

机译:视频速率共聚焦显微镜用于活细胞中的单分子成像和超分辨率荧光成像

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摘要

There is no confocal microscope optimized for single-molecule imaging in live cells and superresolution fluorescence imaging. By combining the swiftness of the line-scanning method and the high sensitivity of wide-field detection, we have developed a, to our knowledge, novel confocal fluorescence microscope with a good optical-sectioning capability (1.0 μm), fast frame rates (<33 fps), and superior fluorescence detection efficiency. Full compatibility of the microscope with conventional cell-imaging techniques allowed us to do single-molecule imaging with a great ease at arbitrary depths of live cells. With the new microscope, we monitored diffusion motion of fluorescently labeled cAMP receptors of Dictyostelium discoideum at both the basal and apical surfaces and obtained superresolution fluorescence images of microtubules of COS-7 cells at depths in the range 0-85 μm from the surface of a coverglass.
机译:没有针对活细胞中的单分子成像和超分辨率荧光成像进行优化的共聚焦显微镜。通过将线扫描方法的快速性和宽视野检测的高灵敏度相结合,据我们所知,我们开发了一种新型的共聚焦荧光显微镜,该显微镜具有良好的光学切片能力(1.0μm),快速帧频(< 33 fps),以及出色的荧光检测效率。显微镜与常规细胞成像技术完全兼容,这使我们能够轻松地在任意深度的活细胞中进行单分子成像。使用新的显微镜,我们监测了荧光标记的盘基网柄菌的cAMP受体在基表面和根尖表面的扩散运动,并获得了从表面到0-85μm深度的COS-7细胞微管的超分辨率荧光图像。盖玻片。

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