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Chen L, Chen X, Yang X, He C, Wang M, Xi P, Gao J. Advances of super-resolution fluorescence polarization microscopy and its applications in life sciences. Comput Struct Biotechnol J 2020; 18:2209-2216. [PMID: 32952935 PMCID: PMC7476067 DOI: 10.1016/j.csbj.2020.06.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 11/29/2022] Open
Abstract
Fluorescence polarization microscopy (FPM) analyzes both intensity and orientation of fluorescence dipole, and reflects the structural specificity of target molecules. It has become an important tool for studying protein organization, orientational order, and structural changes in cells. However, suffering from optical diffraction limit, conventional FPM has low orientation resolution and observation accuracy, as the polarization information is averaged by multiple fluorescent molecules within a diffraction-limited volume. Recently, novel super-resolution FPMs have been developed to break the diffraction barrier. In this review, we will introduce the recent progress to achieve sub-diffraction determination of dipole orientation. Biological applications, based on polarization analysis of fluorescence dipole, are also summarized, with focus on chromophore-target molecule interaction and molecular organization.
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Affiliation(s)
- Long Chen
- Department of Automation, Tsinghua University, 100084 Beijing, China.,MOE Key Laboratory of Bioinformatics; Bioinformatics Division, Center for Synthetic & Systems Biology, BNRist; Center for Synthetic & Systems Biology, Tsinghua University, 100084 Beijing, China
| | - Xingye Chen
- Department of Automation, Tsinghua University, 100084 Beijing, China
| | - Xusan Yang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Chao He
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
| | - Miaoyan Wang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Peng Xi
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Juntao Gao
- Department of Automation, Tsinghua University, 100084 Beijing, China.,MOE Key Laboratory of Bioinformatics; Bioinformatics Division, Center for Synthetic & Systems Biology, BNRist; Center for Synthetic & Systems Biology, Tsinghua University, 100084 Beijing, China
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Zhanghao K, Chen L, Yang XS, Wang MY, Jing ZL, Han HB, Zhang MQ, Jin D, Gao JT, Xi P. Super-resolution dipole orientation mapping via polarization demodulation. LIGHT, SCIENCE & APPLICATIONS 2016; 5:e16166. [PMID: 30167126 PMCID: PMC6059828 DOI: 10.1038/lsa.2016.166] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 05/09/2016] [Accepted: 05/17/2016] [Indexed: 05/07/2023]
Abstract
Fluorescence polarization microscopy (FPM) aims to detect the dipole orientation of fluorophores and to resolve structural information for labeled organelles via wide-field or confocal microscopy. Conventional FPM often suffers from the presence of a large number of molecules within the diffraction-limited volume, with averaged fluorescence polarization collected from a group of dipoles with different orientations. Here, we apply sparse deconvolution and least-squares estimation to fluorescence polarization modulation data and demonstrate a super-resolution dipole orientation mapping (SDOM) method that resolves the effective dipole orientation from a much smaller number of fluorescent molecules within a sub-diffraction focal area. We further apply this method to resolve structural details in both fixed and live cells. For the first time, we show that different borders of a dendritic spine neck exhibit a heterogeneous distribution of dipole orientation. Furthermore, we illustrate that the dipole is always perpendicular to the direction of actin filaments in mammalian kidney cells and radially distributed in the hourglass structure of the septin protein under specific labelling. The accuracy of the dipole orientation can be further mapped using the orientation uniform factor, which shows the superiority of SDOM compared with its wide-field counterpart as the number of molecules is decreased within the smaller focal area. Using the inherent feature of the orientation dipole, the SDOM technique, with its fast imaging speed (at sub-second scale), can be applied to a broad range of fluorescently labeled biological systems to simultaneously resolve the valuable dipole orientation information with super-resolution imaging.
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Affiliation(s)
- Karl Zhanghao
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Long Chen
- Department of Automation, Tsinghua University, Beijing 100084, China
- Bioinformatics Division, TNLIST, MOE Key Laboratory of Bioinformatics and Center for Synthetic & Systems Biology, Tsinghua University, Beijing 100084, China
| | - Xu-San Yang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Miao-Yan Wang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Zhen-Li Jing
- Department of Automation, Tsinghua University, Beijing 100084, China
- Bioinformatics Division, TNLIST, MOE Key Laboratory of Bioinformatics and Center for Synthetic & Systems Biology, Tsinghua University, Beijing 100084, China
| | - Hong-Bin Han
- Department of Radiology, Peking University Third Hospital, Beijing 100191, China
| | - Michael Q Zhang
- Bioinformatics Division, TNLIST, MOE Key Laboratory of Bioinformatics and Center for Synthetic & Systems Biology, Tsinghua University, Beijing 100084, China
- Department of Biological Sciences, Center for Systems Biology, The University of Texas, Dallas 800 West Campbell Road, RL11, Richardson, TX 75080-3021, USA
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Dayong Jin
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia
| | - Jun-Tao Gao
- Department of Automation, Tsinghua University, Beijing 100084, China
- Bioinformatics Division, TNLIST, MOE Key Laboratory of Bioinformatics and Center for Synthetic & Systems Biology, Tsinghua University, Beijing 100084, China
- ;, ;,
| | - Peng Xi
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
- Institute for Biomedical Materials and Devices (IBMD), Faculty of Science, University of Technology Sydney, NSW 2007, Australia
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Yang X, Tzeng YK, Zhu Z, Huang Z, Chen X, Liu Y, Chang HC, Huang L, Li WD, Xi P. Sub-diffraction imaging of nitrogen-vacancy centers in diamond by stimulated emission depletion and structured illumination. RSC Adv 2014. [DOI: 10.1039/c3ra47240j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Xie H, Liu Y, Jin D, Santangelo PJ, Xi P. Analytical description of high-aperture STED resolution with 0-2π vortex phase modulation. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2013; 30:1640-5. [PMID: 24323224 PMCID: PMC4090082 DOI: 10.1364/josaa.30.001640] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Stimulated emission depletion (STED) can achieve optical superresolution, with the optical diffraction limit broken by the suppression on the periphery of the fluorescent focal spot. Previously, it is generally experimentally accepted that there exists an inverse square root relationship with the STED power and the resolution, but with arbitrary coefficients in expression. In this paper, we have removed the arbitrary coefficients by exploring the relationship between the STED power and the achievable resolution from vector optical theory for the widely used 0-2π vortex phase modulation. Electromagnetic fields of the focal region of a high numerical aperture objective are calculated and approximated into polynomials of radius in the focal plane, and analytical expression of resolution as a function of the STED intensity has been derived. As a result, the resolution can be estimated directly from the measurement of the saturation power of the dye and the STED power applied in the region of high STED power.
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Affiliation(s)
- Hao Xie
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
- Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, USA
| | - Yujia Liu
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, China
- Advanced Cytometry Labs, MQ photonics Research Centre, Macquarie University, NSW 2109, Sydney, Australia
| | - Dayong Jin
- Advanced Cytometry Labs, MQ photonics Research Centre, Macquarie University, NSW 2109, Sydney, Australia
| | - Philip J. Santangelo
- Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, USA
| | - Peng Xi
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
- Corresponding author:
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