用于多尺度高分辨率三维成像的双环光片荧光显微技术 -

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用于多尺度高分辨率三维成像的双环光片荧光显微技术

doi:10.37188/CO.2022-0093

王鹏^1,,
周瑶^1,,
赵宇轩^1,,
费鹏^{1, 2,,}

1.
华中科技大学光学与电子信息学院, 湖北武汉 430074
2.
华中科技大学武汉光电国家研究中心, 湖北武汉 430074

基金项目:国家重点研发计划 (No. 2017YFA0700501)；国家自然科学基金 (No. 21874052, No. 21927802)

详细信息

作者简介:
王　鹏（1997—），男，河南漯河人，硕士研究生，2019年于中山大学获得学士学位，主要从事光片荧光显微成像技术的研究。E-mail：wp24@hust.edu.cn
周　瑶（1998—），女，四川成都人，硕士研究生，2020年于华中科技大学获得学士学位，主要从事新型荧光显微成像技术的研究。E-mail：zhouyao2021@hust.edu.cn
赵宇轩（1993—），男，河南洛阳人，博士研究生，2017年于华南理工大学获得学士学位，目前聚焦于超分辨荧光显微成像新技术的研究及其在活细胞显微成像中的应用。在Nature Methods, Optica , Journal of Biophotonics等期刊发表论文5篇，授权发明专利/软件著作权5项。E-mail：yxzh@hust.edu.cn
费　鹏（1982—），男，江西九江人，北京大学博士，UCLA博士后，国家海外高层次青年人才，现任华中科技大学光电学院/武汉光电国家研究中心教授。目前聚焦于荧光显微成像新技术的研究，并致力开拓他们在生物医学中的应用。在Nature Methods (2), Nature Materials, Nature Communications 等期刊发表论文70余篇，授权发明专利/软件著作权20余项，并实现国际转化。任SPIE Journal of Biomedical Optics期刊Associate Editor。E-mail：feipeng@hust.edu.cn

中图分类号:O438
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出版历程
- 收稿日期:2022-05-09
- 录用日期:2022-07-07
- 修回日期:2022-05-31
- 网络出版日期:2022-08-03

Double-ring-modulated light sheet fluorescence microscopic technique for multi-scale high-resolution 3D imaging

WANG Peng^1,,
ZHOU Yao^1,,
ZHAO Yu-xuan^1,,
FEI Peng^{1, 2,,}

1.
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
2.
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China

Funds:Supported by National Key Research and Development Program of China (No. 2017YFA0700501); National Natural Science Foundation of China (No. 21874052, No. 21927802)

More Information

Corresponding author:feipeng@hust.edu.cn

摘要

摘要:
本文提出了一种无衍射光片荧光显微成像技术，可以方便地对从微米到厘米各种尺寸的多种生物样本进行多尺度三维荧光成像。提出一种双环调控方法以解决传统贝塞尔光片旁瓣过重的问题，该方法能够可调节地产生0.4~5 μm之间不同厚度类型的无衍射光片，同时其旁瓣占比被压低到30%以下。基于这种新的调控手段设计搭建了一套多尺度光片荧光显微成像系统。该系统展示出适用性极强的多尺度成像能力，例如：活细胞双色三维动态成像、膨胀细胞三维超分辨成像以及介观尺度下全器官的高通量三维成像。证明该多尺度成像模式能够显著提升光片荧光显微镜的成像效率，由此可以推进细胞生物学、组织病理学、神经科学等多种生物医学相关研究的发展。
- 三维荧光显微镜/
- 光片荧光显微镜/
- 多尺度三维成像/
- 低旁瓣贝塞尔光片
Abstract:
In this paper, we propose a non-diffraction Light Sheet Fluorescence Microscopy (LSFM) technique, which readily enables multi-scale 3D fluorescence imaging of diverse biological samples with size ranging from microns to centimeters. To solve the problem of heavy sidelobes in conventional non-diffraction Bessel LSFM, we invent a double-ring-modulated approach which can generate non-diffraction light sheets with ~0.4 to ~5 µm tunable thickness and the ratio of the sidelobe was reduced to less than 30%. Then we built a multi-scale LSFM system based on this novel approach. The system showed versatile multi-scale imaging abilities, such as dual-color 3D dynamic imaging of single live cell, 3D super-resolution imaging of expansion cells and high-throughput 3D mapping of entire meso-scale organs. Therefore, we demonstrate that this multi-scale imaging modality can substantially improve the efficiency of LSFM for advancing various biomedical studies, such as cell biology, tissue pathology, and neuroscience.
- 3D fluorescence microscopy/
- light-sheet fluorescence microscopy/
- multi-scale 3D imaging/
- low sidelobe Bessel light sheet

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图 1光束整形原理和光片性能表征。（a）双环掩模调控生成低旁瓣贝塞尔光片；（b）不同尺度类型光片性能表征及对比

Figure 1.Principle of double-ring beam reshaping and its comparative performance. (a) Lowsidelobe Bessel light sheet obtained by the modulation of a double-ring mask; (b) characterization and comparison of performance of our multi-scale low sidelobe light sheet

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图 2系统光路图与时序控制图。（a）多尺度光片显微成像系统光路图；（b）不同应用场景的时序控制图

Figure 2.Schematic diagrams of the proposed system and the timing control flow charts. (a) The optical design of our multi-scale light sheet fluorescence microscope; (b) the control charts for different imaging applications

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图 3单环贝塞尔光片与双环贝塞尔光片成像性能对比。（a）使用旁瓣占比73%的2.5 μm单环贝塞尔光片获得的点扩散函数x-z面最大强度投影；（b）使用旁瓣占比18%的2.5 μm双环贝塞尔光片获得的点扩散函数x-z面最大强度投影

Figure 3.Comparison of imaging results between single-ring Bessel light sheet and DR-SPIM. (a)x-zplane max intensity projection of point spread function by 2.5 μm single-ring Bessel light sheet with 73% side lobes; (b)x-zplane max intensity projection of point spread function by 2.5 μm DR-SPIM with 18% side lobes

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图 4U2OS细胞中线粒体外膜的分布及其运动变化。（a）整个细胞中线粒体外膜的三维分布图，比例尺：10 μm；（b）局部线粒体外膜的运动变化过程，比例尺：2 μm

Figure 4.3D dynamics of mitochondrial outer membrane in U2OS cell. (a) Three-dimensional distribution of mitochondrial outer membrane in a whole live cell, scale bar: 10 μm; (b) the movement of local mitochondrial outer membrane, scale bar: 2 μm

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图 5U2OS细胞中线粒体外膜与Drp1的分布与相互作用。（a）线粒体外膜与Drp1的三维分布图，比例尺：3 μm；（b）感兴趣区域内线粒体外膜与Drp1相互作用过程，比例尺：1 μm

Figure 5.Interactions between mitochondrial outer membrane and Drp1 in U2OS cell. (a) Three-dimensional co-localization of mitochondrial outer membrane and Drp1, scale bar: 3 μm; (b) interactions between mitochondrial outer membrane and Drp1 in a region of interest, scale bar: 1 μm

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图 6多尺度成像应用可视化结果。4倍膨胀核孔（a）可视化结果及其（b）轴向视角，比例尺：10 μm；（c）区域三维可视化，比例尺：2 μm；（d）区域x-y面和（e）区域y-z面最大强度投影，比例尺：1 μm；（f）鼠脑全脑可视化结果，比例尺：1 mm；（g）位于皮层和（h）位于丘脑的感兴趣区域三维可视化结果，比例尺：100 μm

Figure 6.3D visualization of multi-scale imaging results. (a) 3D visualization and (b) axial 3D view of an expanded nuclear hole (expansion factor: 4), scale bar: 10 μm; (c) 3D visualization of a selected small region, scale bar: 2 μm; max intensity projection of the (d)x-yplane and (e)y-zplane of the region, scale bar: 1 μm; (f) 3D visualization of a whole mouse brain, scale bar: 1 mm; 3D visualization of a region of interest in (g) cortex and (h) thalamus, scale bar: 100 μm

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表 1不同应用场景下所用的掩模参数与物镜型号

Table 1.Mask parameters and objectives in different application scenarios

应用场景		线粒体外膜的高速、低光毒性成像	线粒体外膜与 Drp1相互作用的双色成像	4倍膨胀核孔三维体成像	透明化鼠脑三维体成像	单环贝塞尔光片与双环贝塞尔光片成像性能对比
光片类型		500 nm 双环贝塞尔光片			3.5 μm 双环贝塞尔光片	2.5 μm 单环贝塞尔光片	2.5 μm 双环贝塞尔光片
掩模参数 /mm	R_{outer_max}	1.857			1.652	1.95	2.395
	R_{outer_min}	0.982			0.873	1.03	1.266
	R_{inner_max}	0.789			0.701	0	1.016
	R_{inner_min}	0.386			0.27	0	0.392
照明物镜		28.6 × SO Microscope Objective, 0.66 NA, 3.74mm Water, Special Optics			XLFLUOR4X/340, Olympus
探测物镜		LUMFLN60XW,Olympus			UMPLFLN10XW, Olympus	UMPLFLN20XW,Olympus

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