1
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Liang M, Goss M, Cao S, Yang C. Non-Destructive Analysis of Subvisible Particles with Mie-Scattering-Based Light Sheet Technology: System Development. J Pharm Sci 2024; 113:2817-2825. [PMID: 39032825 DOI: 10.1016/j.xphs.2024.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 07/14/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
The characteristics of subvisible particles (SbVPs) are critical quality attributes of injectable and ophthalmic solutions in pharmaceutical manufacturing. However, current compendial SbVP testing methods, namely the light obstruction method and the microscopic particle count method, are destructive and wasteful of target samples. In this study, we present the development of a non-destructive SbVP analyzer aiming to analyze SbVPs directly in drug product (DP) containers while keeping the samples intact. Custom sample housings are developed and incorporated into the analyzer to reduce optical aberrations introduced by the curvature of typical pharmaceutical DP sample containers. The analyzer integrates a light-sheet microscope structure and models the side scattering event from a particle with Mie scattering theory with refractive indices as prior information. Equivalent spherical particle size under assigned refractive index values is estimated, and the particle concentration is determined based on the number of scattering events and the volume sampled by the light sheet. The resulting analyzer's capability and performance to non-destructively analyze SbVPs in DP containers were evaluated using a series of polystyrene bead suspensions in ISO 2R and 6R vials. Our results and analysis show the particle analyzer is capable of directly detecting SbVPs from intact DP containers, sorting SbVPs into commonly used size bins (e.g. ≥ 2 µm, ≥ 5 µm, ≥ 10 µm, and ≥ 25 µm), and reliably quantifying SbVPs in the concentration range of 4.6e2 to 5.0e5 particle/mL with a margin of ± 15 % error based on a 90 % confidence interval.
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Affiliation(s)
- Mingshu Liang
- California Institute of Technology, Electrical Engineering, Pasadena, CA 91125, USA
| | - Monica Goss
- Amgen Process Development, Thousand Oaks, CA 91320, USA
| | - Shawn Cao
- Amgen Process Development, Thousand Oaks, CA 91320, USA.
| | - Changhuei Yang
- California Institute of Technology, Electrical Engineering, Pasadena, CA 91125, USA.
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2
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Li H, Tan X, Jiao Q, Li Y, Liu S, Pei J, Zhang J, Zhang W, Xu L. Design and Study of a Reflector-Separated Light Dispersion-Compensated 3D Microscopy System. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23094516. [PMID: 37177720 PMCID: PMC10181646 DOI: 10.3390/s23094516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/01/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023]
Abstract
The secondary-phase grating-based tomographic microscopy system, which is widely used in the biological and life sciences, can observe all the sample multilayer image information simultaneously because it has multifocal points. However, chromatic aberration exists in the grating diffraction, which seriously affects the observation of the image. To correct the chromatic aberration of the tomographic microscope system, this paper proposes a system that adopts blazed gratings and angle-variable reflectors as chromatic aberration correction devices according to the principle of dispersion compensation and Fourier phase-shift theory. A reflector-separated light dispersion-compensated 3D microscopy system is presented to achieve chromatic aberration correction while solving the problem of multilayer image overlap. The theoretical verification and optical design of the system were completed using ZEMAX software. The results show that the proposed system reduced the chromatic aberration of ordinary tomographic microscopy systems by more than 90%, retaining more wavelengths of light information. In addition, the system had a relatively wide range in the color difference compensation element installation position, reducing the difficulty of dispersion compensation element installation. Overall, the results indicate that the proposed system is effective in reducing chromatic aberration in grating diffraction.
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Affiliation(s)
- Hui Li
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Tan
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
| | - Qingbin Jiao
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
| | - Yuhang Li
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Siqi Liu
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Pei
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiahang Zhang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Zhang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liang Xu
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Beijing 130033, China
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3
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Reischke M, Vanderpoorten O, Ströhl F. Rapid prototyping of 1xN multifocus gratings via additive direct laser writing. MICRO AND NANO ENGINEERING 2023. [DOI: 10.1016/j.mne.2023.100186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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4
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Cao R, Zhao J, Li L, Du L, Zhang Y, Luo Y, Jiang L, Davis S, Zhou Q, de la Zerda A, Wang LV. Optical-resolution photoacoustic microscopy with a needle-shaped beam. NATURE PHOTONICS 2023; 17:89-95. [PMID: 38149029 PMCID: PMC10751030 DOI: 10.1038/s41566-022-01112-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 10/19/2022] [Indexed: 12/28/2023]
Abstract
Optical-resolution photoacoustic microscopy (OR-PAM) can visualize wavelength-dependent optical absorption at the cellular level. However, OR-PAM suffers from a limited depth of field (DOF) due to the tight focus of the optical excitation beam, making it challenging to acquire high-resolution images of samples with uneven surfaces or high-quality volumetric images without z-scanning. To overcome this limitation, we propose needle-shaped beam photoacoustic microscopy (NB-PAM), which can extend the DOF to up to ~28-fold Rayleigh lengths via customized diffractive optical elements (DOEs). The DOE generate a needle beam with a well-maintained beam diameter, a uniform axial intensity distribution, and negligible sidelobes. The advantage of using NB-PAM is demonstrated by both histology-like imaging of fresh slide-free organs using a 266 nm laser and in vivo mouse brain vasculature imaging using a 532 nm laser. The approach provides new perspectives for slide-free intraoperative pathological imaging and in-vivo organ-level imaging.
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Affiliation(s)
- Rui Cao
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Jingjing Zhao
- Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, California, USA
| | - Lei Li
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Lin Du
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Yide Zhang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Yilin Luo
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Laiming Jiang
- Department of Biomedical Engineering and Ophthalmology, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA
| | - Samuel Davis
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Qifa Zhou
- Department of Biomedical Engineering and Ophthalmology, Viterbi School of Engineering, University of Southern California, Los Angeles, California, USA
| | - Adam de la Zerda
- Department of Structural Biology, Stanford University School of Medicine, Stanford University, Stanford, California, USA
- Biophysics Program, Molecular Imaging Program, and Bio-X Program at Stanford University, Stanford, California, USA
- Chan Zuckerberg Biohub, San Francisco, California, USA
| | - Lihong V Wang
- Caltech Optical Imaging Laboratory, Andrew and Peggy Cherng Department of Medical Engineering, Department of Electrical Engineering, California Institute of Technology, Pasadena, California, USA
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5
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Ren J, Han KY. 2.5D microscopy with polarization independent SLM for enhanced detection efficiency and aberration correction. OPTICS EXPRESS 2021; 29:27530-27541. [PMID: 34615167 PMCID: PMC8687110 DOI: 10.1364/oe.434260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Fast, volumetric imaging by fluorescence microscopy is essential in studying biological phenomena and cellular functions. Recently, single-shot 2.5D microscopy showed promising results for high-throughput quantitative subcellular analysis via extended depth of field imaging without sequential z-scanning; however, the detection efficiency was limited and it lacked depth-induced aberration correction. Here we report that a spatial light modulator (SLM) in a polarization insensitive configuration can significantly improve the detection efficiency of 2.5D microscopy, while also compensating for aberrations at large imaging depths caused by the refractive index mismatch between the sample and the immersion medium. We highlight the improved efficiency via quantitative single-molecule RNA imaging of mammalian cells with a 2-fold improvement in the fluorescence intensity compared to a conventional SLM-based microscopy. We demonstrate the aberration correction capabilities and extended depth of field by imaging thick specimens with fewer z-scanning steps.
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6
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Louis B, Camacho R, Bresolí-Obach R, Abakumov S, Vandaele J, Kudo T, Masuhara H, Scheblykin IG, Hofkens J, Rocha S. Fast-tracking of single emitters in large volumes with nanometer precision. OPTICS EXPRESS 2020; 28:28656-28671. [PMID: 32988132 DOI: 10.1364/oe.401557] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Multifocal plane microscopy allows for capturing images at different focal planes simultaneously. Using a proprietary prism which splits the emitted light into paths of different lengths, images at 8 different focal depths were obtained, covering a volume of 50x50x4 µm3. The position of single emitters was retrieved using a phasor-based approach across the different imaging planes, with better than 10 nm precision in the axial direction. We validated the accuracy of this approach by tracking fluorescent beads in 3D to calculate water viscosity. The fast acquisition rate (>100 fps) also enabled us to follow the capturing of 0.2 µm fluorescent beads into an optical trap.
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7
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Liu S, Huh H, Lee SH, Huang F. Three-Dimensional Single-Molecule Localization Microscopy in Whole-Cell and Tissue Specimens. Annu Rev Biomed Eng 2020; 22:155-184. [PMID: 32243765 PMCID: PMC7430714 DOI: 10.1146/annurev-bioeng-060418-052203] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Super-resolution microscopy techniques are versatile and powerful tools for visualizing organelle structures, interactions, and protein functions in biomedical research. However, whole-cell and tissue specimens challenge the achievable resolution and depth of nanoscopy methods. We focus on three-dimensional single-molecule localization microscopy and review some of the major roadblocks and developing solutions to resolving thick volumes of cells and tissues at the nanoscale in three dimensions. These challenges include background fluorescence, system- and sample-induced aberrations, and information carried by photons, as well as drift correction, volume reconstruction, and photobleaching mitigation. We also highlight examples of innovations that have demonstrated significant breakthroughs in addressing the abovementioned challenges together with their core concepts as well as their trade-offs.
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Affiliation(s)
- Sheng Liu
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA;
| | - Hyun Huh
- Institute for Quantitative Biomedicine, Rutgers University, Piscataway, New Jersey 08854, USA
| | - Sang-Hyuk Lee
- Institute for Quantitative Biomedicine, Rutgers University, Piscataway, New Jersey 08854, USA
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA;
| | - Fang Huang
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA;
- Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, Indiana 47907, USA
- Purdue Institute of Inflammation, Immunology, and Infectious Disease, Purdue University, West Lafayette, Indiana 47907, USA
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8
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Cardozo Gizzi AM, Cattoni DI, Nollmann M. TADs or no TADS: Lessons From Single-cell Imaging of Chromosome Architecture. J Mol Biol 2020; 432:682-693. [PMID: 31904354 DOI: 10.1016/j.jmb.2019.12.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/12/2019] [Accepted: 12/05/2019] [Indexed: 12/16/2022]
Abstract
Eukaryotic genomes are folded in a hierarchical organization that reflects and possibly regulates their function. Genomewide studies revealed a new level of organization at the kilobase-to-megabase scale termed "topological associating domains" (TADs). TADs are characterized as stable units of chromosome organization that restrict the action of regulatory sequences within one "functional unit." Consequently, TADs are expected to appear as physical entities in most cells. Very recent single-cell studies have shown a notable variability in genome architecture at this scale, raising concerns about this model. Furthermore, the direct and simultaneous observation of genome architecture and transcriptional output showed the lack of stable interactions between regulatory sequences in transcribing cells. These findings are consistent with a large body of evidence suggesting that genome organization is highly heterogeneous at different scales. In this review, we discuss the main strategies employed to image chromatin organization, present the latest state-of-the-art developments, and propose an interpretation reconciling population-based findings with direct single-cell chromatin organization observations. All in all, we propose that TADs are made of multiple, low-frequency, low-affinity interactions that increase the probability, but are not deterministic, of regulatory interactions.
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Affiliation(s)
- Andrés M Cardozo Gizzi
- CIQUIBIC (CONICET), Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, 5000, Córdoba, Argentina
| | - Diego I Cattoni
- Centre de Biochimie Structurale, CNRS UMR 5048, INSERM U1054, Université de Montpellier, 60 rue de Navacelles, 34090, Montpellier, France
| | - Marcelo Nollmann
- Centre de Biochimie Structurale, CNRS UMR 5048, INSERM U1054, Université de Montpellier, 60 rue de Navacelles, 34090, Montpellier, France.
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9
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He K, Wang Z, Huang X, Wang X, Yoo S, Ruiz P, Gdor I, Selewa A, Ferrier NJ, Scherer N, Hereld M, Katsaggelos AK, Cossairt O. Computational multifocal microscopy. BIOMEDICAL OPTICS EXPRESS 2018; 9:6477-6496. [PMID: 31065444 PMCID: PMC6491004 DOI: 10.1364/boe.9.006477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/12/2018] [Accepted: 11/12/2018] [Indexed: 05/27/2023]
Abstract
Despite recent advances, high performance single-shot 3D microscopy remains an elusive task. By introducing designed diffractive optical elements (DOEs), one is capable of converting a microscope into a 3D "kaleidoscope," in which case the snapshot image consists of an array of tiles and each tile focuses on different depths. However, the acquired multifocal microscopic (MFM) image suffers from multiple sources of degradation, which prevents MFM from further applications. We propose a unifying computational framework which simplifies the imaging system and achieves 3D reconstruction via computation. Our optical configuration omits optical elements for correcting chromatic aberrations and redesigns the multifocal grating to enlarge the tracking area. Our proposed setup features only one single grating in addition to a regular microscope. The aberration correction, along with Poisson and background denoising, are incorporated in our deconvolution-based fully-automated algorithm, which requires no empirical parameter-tuning. In experiments, we achieve spatial resolutions of 0.35um (lateral) and 0.5um (axial), which are comparable to the resolution that can be achieved with confocal deconvolution microscopy. We demonstrate a 3D video of moving bacteria recorded at 25 frames per second using our proposed computational multifocal microscopy technique.
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Affiliation(s)
- Kuan He
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
| | - Zihao Wang
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
| | - Xiang Huang
- Mathematics and Computer Science, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439,
USA
| | - Xiaolei Wang
- Department of Chemistry, The University of Chicago, 5801 South Ellis Avenue, Chicago, IL 60637,
USA
| | - Seunghwan Yoo
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
| | - Pablo Ruiz
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
| | - Itay Gdor
- Department of Chemistry, The University of Chicago, 5801 South Ellis Avenue, Chicago, IL 60637,
USA
| | - Alan Selewa
- Mathematics and Computer Science, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439,
USA
| | - Nicola J. Ferrier
- Mathematics and Computer Science, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439,
USA
| | - Norbert Scherer
- Department of Chemistry, The University of Chicago, 5801 South Ellis Avenue, Chicago, IL 60637,
USA
- James Franck Institute, The University of Chicago, 5801 South Ellis Avenue, Chicago, IL 60637,
USA
| | - Mark Hereld
- Mathematics and Computer Science, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439,
USA
| | - Aggelos K. Katsaggelos
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
| | - Oliver Cossairt
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208,
USA
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10
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Challenges and guidelines toward 4D nucleome data and model standards. Nat Genet 2018; 50:1352-1358. [PMID: 30262815 DOI: 10.1038/s41588-018-0236-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 07/19/2018] [Indexed: 11/09/2022]
Abstract
Due to recent advances in experimental and theoretical approaches, the dynamic three-dimensional organization (3D) of the nucleus has become a very active area of research in life sciences. We now understand that the linear genome is folded in ways that may modulate how genes are expressed during the basic functioning of cells. Importantly, it is now possible to build 3D models of how the genome folds within the nucleus and changes over time (4D). Because genome folding influences its function, this opens exciting new possibilities to broaden our understanding of the mechanisms that determine cell fate. However, the rapid evolution of methods and the increasing complexity of data can result in ambiguity and reproducibility challenges, which may hamper the progress of this field. Here, we describe such challenges ahead and provide guidelines to think about strategies for shared standardized validation of experimental 4D nucleome data sets and models.
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11
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Aristov A, Lelandais B, Rensen E, Zimmer C. ZOLA-3D allows flexible 3D localization microscopy over an adjustable axial range. Nat Commun 2018; 9:2409. [PMID: 29921892 PMCID: PMC6008307 DOI: 10.1038/s41467-018-04709-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/16/2018] [Indexed: 11/23/2022] Open
Abstract
Single molecule localization microscopy can generate 3D super-resolution images without scanning by leveraging the axial variations of normal or engineered point spread functions (PSF). Successful implementation of these approaches for extended axial ranges remains, however, challenging. We present Zernike Optimized Localization Approach in 3D (ZOLA-3D), an easy-to-use computational and optical solution that achieves optimal resolution over a tunable axial range. We use ZOLA-3D to demonstrate 3D super-resolution imaging of mitochondria, nuclear pores and microtubules in entire nuclei or cells up to ~5 μm deep. 3D single-molecule localization is limited in depth and often requires using a wide range of point spread functions (PSFs). Here the authors present an optical solution featuring a deformable mirror to generate different PSFs and easy-to-use software for super-resolution imaging up to 5 µm deep.
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Affiliation(s)
- Andrey Aristov
- Unité Imagerie et Modélisation, Institut Pasteur, 25-28 rue du Docteur Roux, Paris, France.,UMR 3691, CNRS; C3BI, USR 3756, IP CNRS, Paris, France
| | - Benoit Lelandais
- Unité Imagerie et Modélisation, Institut Pasteur, 25-28 rue du Docteur Roux, Paris, France.,UMR 3691, CNRS; C3BI, USR 3756, IP CNRS, Paris, France.,Hub Bioinformatique et Biostatistique, Institut Pasteur, Paris, France
| | - Elena Rensen
- Unité Imagerie et Modélisation, Institut Pasteur, 25-28 rue du Docteur Roux, Paris, France.,UMR 3691, CNRS; C3BI, USR 3756, IP CNRS, Paris, France
| | - Christophe Zimmer
- Unité Imagerie et Modélisation, Institut Pasteur, 25-28 rue du Docteur Roux, Paris, France. .,UMR 3691, CNRS; C3BI, USR 3756, IP CNRS, Paris, France.
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12
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Gustavsson AK, Petrov PN, Moerner WE. Light sheet approaches for improved precision in 3D localization-based super-resolution imaging in mammalian cells [Invited]. OPTICS EXPRESS 2018; 26:13122-13147. [PMID: 29801343 PMCID: PMC6005674 DOI: 10.1364/oe.26.013122] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/30/2018] [Indexed: 05/08/2023]
Abstract
The development of imaging techniques beyond the diffraction limit has paved the way for detailed studies of nanostructures and molecular mechanisms in biological systems. Imaging thicker samples, such as mammalian cells and tissue, in all three dimensions, is challenging due to increased background and volumes to image. Light sheet illumination is a method that allows for selective irradiation of the image plane, and its inherent optical sectioning capability allows for imaging of biological samples with reduced background, photobleaching, and photodamage. In this review, we discuss the advantage of combining single-molecule imaging with light sheet illumination. We begin by describing the principles of single-molecule localization microscopy and of light sheet illumination. Finally, we present examples of designs that successfully have married single-molecule super-resolution imaging with light sheet illumination for improved precision in mammalian cells.
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13
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Salas D, Le Gall A, Fiche JB, Valeri A, Ke Y, Bron P, Bellot G, Nollmann M. Angular reconstitution-based 3D reconstructions of nanomolecular structures from superresolution light-microscopy images. Proc Natl Acad Sci U S A 2017; 114:9273-9278. [PMID: 28811371 PMCID: PMC5584428 DOI: 10.1073/pnas.1704908114] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Superresolution light microscopy allows the imaging of labeled supramolecular assemblies at a resolution surpassing the classical diffraction limit. A serious limitation of the superresolution approach is sample heterogeneity and the stochastic character of the labeling procedure. To increase the reproducibility and the resolution of the superresolution results, we apply multivariate statistical analysis methods and 3D reconstruction approaches originally developed for cryogenic electron microscopy of single particles. These methods allow for the reference-free 3D reconstruction of nanomolecular structures from two-dimensional superresolution projection images. Since these 2D projection images all show the structure in high-resolution directions of the optical microscope, the resulting 3D reconstructions have the best possible isotropic resolution in all directions.
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Affiliation(s)
- Desirée Salas
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Antoine Le Gall
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Jean-Bernard Fiche
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Alessandro Valeri
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Yonggang Ke
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30322
- Wallace H. Coulter Department of Biomedical Engineering, Emory University, Atlanta, GA 30322
| | - Patrick Bron
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France
| | - Gaetan Bellot
- Institut de Génomique Fonctionnelle, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France;
| | - Marcelo Nollmann
- Centre de Biochimie Structurale, CNRS, INSERM, Université de Montpellier, 34090 Montpellier, France;
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14
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Highly efficient multicolor multifocus microscopy by optimal design of diffraction binary gratings. Sci Rep 2017; 7:5284. [PMID: 28706216 PMCID: PMC5509674 DOI: 10.1038/s41598-017-05531-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/30/2017] [Indexed: 11/08/2022] Open
Abstract
Multifocus microscopy (MFM) allows sensitive and fast three-dimensional imaging. It relies on the efficient design of diffraction phase gratings yielding homogeneous intensities in desired diffraction orders. Such performances are however guaranteed only for a specific wavelength. Here, we discuss a novel approach for designing binary phase gratings with dual color properties and improved diffraction efficiency for MFM. We simulate binary diffraction gratings with tunable phase shifts to explore its best diffraction performances. We report the design and fabrication of a binary array generator of 3 × 3 equal-intensity diffraction orders with 74% efficiency, 95% uniformity and dual color capability. The multicolor properties of this new design are highlighted by two-color MFM imaging. Finally, we discuss the basics of extending this approach to a variety of diffraction pattern designs.
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15
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von Diezmann A, Shechtman Y, Moerner WE. Three-Dimensional Localization of Single Molecules for Super-Resolution Imaging and Single-Particle Tracking. Chem Rev 2017; 117:7244-7275. [PMID: 28151646 PMCID: PMC5471132 DOI: 10.1021/acs.chemrev.6b00629] [Citation(s) in RCA: 260] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single-molecule super-resolution fluorescence microscopy and single-particle tracking are two imaging modalities that illuminate the properties of cells and materials on spatial scales down to tens of nanometers or with dynamical information about nanoscale particle motion in the millisecond range, respectively. These methods generally use wide-field microscopes and two-dimensional camera detectors to localize molecules to much higher precision than the diffraction limit. Given the limited total photons available from each single-molecule label, both modalities require careful mathematical analysis and image processing. Much more information can be obtained about the system under study by extending to three-dimensional (3D) single-molecule localization: without this capability, visualization of structures or motions extending in the axial direction can easily be missed or confused, compromising scientific understanding. A variety of methods for obtaining both 3D super-resolution images and 3D tracking information have been devised, each with their own strengths and weaknesses. These include imaging of multiple focal planes, point-spread-function engineering, and interferometric detection. These methods may be compared based on their ability to provide accurate and precise position information on single-molecule emitters with limited photons. To successfully apply and further develop these methods, it is essential to consider many practical concerns, including the effects of optical aberrations, field dependence in the imaging system, fluorophore labeling density, and registration between different color channels. Selected examples of 3D super-resolution imaging and tracking are described for illustration from a variety of biological contexts and with a variety of methods, demonstrating the power of 3D localization for understanding complex systems.
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Affiliation(s)
| | - Yoav Shechtman
- Department of Chemistry, Stanford University, Stanford, CA 94305
| | - W. E. Moerner
- Department of Chemistry, Stanford University, Stanford, CA 94305
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