1
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Burke MJ, Batista VS, Davis CM. Similarity Metrics for Subcellular Analysis of FRET Microscopy Videos. J Phys Chem B 2024; 128:8344-8354. [PMID: 39186078 DOI: 10.1021/acs.jpcb.4c02859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Understanding the heterogeneity of molecular environments within cells is an outstanding challenge of great fundamental and technological interest. Cells are organized into specialized compartments, each with distinct functions. These compartments exhibit dynamic heterogeneity under high-resolution microscopy, which reflects fluctuations in molecular populations, concentrations, and spatial distributions. To enhance our comprehension of the spatial relationships among molecules within cells, it is crucial to analyze images of high-resolution microscopy by clustering individual pixels according to their visible spatial properties and their temporal evolution. Here, we evaluate the effectiveness of similarity metrics based on their ability to facilitate fast and accurate data analysis in time and space. We discuss the capability of these metrics to differentiate subcellular localization, kinetics, and structures of protein-RNA interactions in Forster resonance energy transfer (FRET) microscopy videos, illustrated by a practical example from recent literature. Our results suggest that using the correlation similarity metric to cluster pixels of high-resolution microscopy data should improve the analysis of high-dimensional microscopy data in a wide range of applications.
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Affiliation(s)
- Michael J Burke
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Victor S Batista
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Caitlin M Davis
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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2
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Li Y, Sun Y, Shi L. Viewing 3D spatial biology with highly-multiplexed Raman imaging: from spectroscopy to biotechnology. Chem Commun (Camb) 2024. [PMID: 39041798 DOI: 10.1039/d4cc02319f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Understansding complex biological systems requires the simultaneous characterization of a large number of interacting components in their native 3D environment with high spatial resolution. Highly-multiplexed Raman imaging is an emerging general strategy for detecting biomarkers with scalable multiplexity and ultra-sensitivity based on a series of stimulated Raman scattering (SRS) techniques. Here we review recent advances in highly-multiplexed Raman imaging and how they contribute to the technological revolution in 3D spatial biology, focusing on the developmental pathway from spectroscopy study to biotechnology invention. We envision highly-multiplexed Raman imaging is taking off, which will greatly facilitate our understanding in biological and medical research fields.
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Affiliation(s)
- Yingying Li
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| | - Yuchen Sun
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| | - Lixue Shi
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 200032, China.
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3
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Min W, Gao X. The Duality of Raman Scattering. Acc Chem Res 2024; 57:1896-1905. [PMID: 38916989 DOI: 10.1021/acs.accounts.4c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
ConspectusFirst predicted more than 100 years ago, Raman scattering is a cornerstone of photonics, spectroscopy, and imaging. The conventional framework of understanding Raman scattering was built on Raman cross section σRaman. Carrying a dimension of area, σRaman characterizes the interaction strength between light and molecules during inelastic scattering. The numerical values of σRaman turn out to be many orders of magnitude smaller in comparison to the linear absorption cross sections σAbsorption of similar molecular systems. Such an enormous gap has been the reason for researchers to believe the extremely feeble Raman scattering ever since its discovery. However, this prevailing picture is conceptually problematic or at least incomplete due to the fact that Raman scattering and linear absorption belong to different orders of light-matter interaction.In this Account, we will summarize an alternate way to think about Raman scattering, which we term stimulated response formulation. To capture the third-order interaction nature of Raman scattering, we introduced stimulated Raman cross section, σSRS, defined as the intrinsic molecular property in response to the external photon fluxes. Foremost, experimental measurement of σSRS turns out to be not weak at all or even larger when fairly compared with electronic counterparts of the same order. The analytical expression for σSRS derived from quantum electrodynamics also supports the measurement and proves that σSRS is intrinsically strong. Hence, σRaman and σSRS can be extremely small and large, respectively, for the same molecule at the same time. Our subsequent theoretical studies show that stimulated response formulation can unify spontaneous emission, stimulated emission, spontaneous Raman, and stimulated Raman via eq 10, in a coherent and symmetric way. In particular, an Einstein-coefficient-like equation, eq 12a, was derived, showing that σRaman can be explicitly expressed as σSRS multiplied by an effective photon flux arising from zero-point fluctuation of the vacuum. The feeble vacuum fluctuation hence explains how σSRS can be intrinsically strong while, at the same time, σRaman ends up being many orders of magnitude smaller when both compared to the electronic counterparts. These two sides of the same coin prompted us to propose "the duality of Raman scattering" (Table 1). Finally, this formulation naturally leads to a quantitative treatment of stimulated Raman scattering (SRS) microscopy, providing an intuitive, molecule-centric explanation as to how SRS microscopy can outperform regular Raman microscopy. Hence, as unveiled by the new formulation, a duality of Raman scattering has emerged, with implications for both fundamental science and practical technology.
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Affiliation(s)
- Wei Min
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Xin Gao
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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4
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Fujioka H, Murao Y, Okinaka M, John Spratt S, Shou J, Kawatani M, Kojima R, Tachibana R, Urano Y, Ozeki Y, Kamiya M. Cyano-Hydrol green derivatives: Expanding the 9-cyanopyronin-based resonance Raman vibrational palette. Bioorg Med Chem Lett 2024; 106:129757. [PMID: 38636718 DOI: 10.1016/j.bmcl.2024.129757] [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: 02/21/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
9-cyanopyronin is a promising scaffold that exploits resonance Raman enhancement to enable sensitive, highly multiplexed biological imaging. Here, we developed cyano-Hydrol Green (CN-HG) derivatives as resonance Raman scaffolds to expand the color palette of 9-cyanopyronins. CN-HG derivatives exhibit sufficiently long wavelength absorption to produce strong resonance Raman enhancement for near-infrared (NIR) excitation, and their nitrile peaks are shifted to a lower frequency than those of 9-cyanopyronins. The fluorescence of CN-HG derivatives is strongly quenched due to the lack of the 10th atom, unlike pyronin derivatives, and this enabled us to detect spontaneous Raman spectra with high signal-to-noise ratios. CN-HG derivatives are powerful candidates for high performance vibrational imaging.
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Affiliation(s)
- Hiroyoshi Fujioka
- Department of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho. Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Yuta Murao
- Department of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho. Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Momoko Okinaka
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Spencer John Spratt
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Jingwen Shou
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Minoru Kawatani
- Department of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho. Midori-ku, Yokohama, Kanagawa 226-8501, Japan; Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryosuke Kojima
- Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ryo Tachibana
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasuteru Urano
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yasuyuki Ozeki
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan; Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mako Kamiya
- Department of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho. Midori-ku, Yokohama, Kanagawa 226-8501, Japan; Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Research Center for Autonomous Systems Meterialogy (ASMat), Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho. Midori-ku, Yokohama, Kanagawa 226-8501, Japan.
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5
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Takahashi S, Oguchi K, Kamei K, Mizuguchi T, Spratt SJ, Ozeki Y. Widely tunable fiber optical parametric oscillator synchronized with a Ti:sapphire laser for stimulated Raman scattering microscopy. BIOMEDICAL OPTICS EXPRESS 2024; 15:3191-3199. [PMID: 38855684 PMCID: PMC11161345 DOI: 10.1364/boe.515446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/29/2024] [Accepted: 04/09/2024] [Indexed: 06/11/2024]
Abstract
Stimulated Raman scattering (SRS) microscopy is a powerful vibrational imaging technique with high chemical specificity. However, the insufficient tuning range or speed of light sources limits the spectral range of SRS imaging and, hence, the ability to identify molecular species. Here, we present a widely tunable fiber optical parametric oscillator with a tuning range of 1470 cm-1, which can be synchronized with a Ti:sapphire laser. By using the synchronized light sources, we develop an SRS imaging system that covers the fingerprint and C-H stretching regions, without balanced detection. We validate its broadband imaging capability by visualizing a mixed polymer sample in multiple vibrational modes. We also demonstrate SRS imaging of HeLa cells, showing the applicability of our SRS microscope to biological samples.
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Affiliation(s)
- Shun Takahashi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kenichi Oguchi
- Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan
| | - Kento Kamei
- Department of Electrical and Electronic Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takaha Mizuguchi
- Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan
| | - Spencer J. Spratt
- Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
- Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan
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6
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Kawaguchi M, Yonetani Y, Mizuguchi T, Spratt SJ, Asanuma M, Shimizu H, Sasaki M, Ozeki Y. Visualization of Modified Bisarylbutadiyne-Tagged Small Molecules in Live-Cell Nuclei by Stimulated Raman Scattering Microscopy. Anal Chem 2024; 96:6643-6651. [PMID: 38626411 DOI: 10.1021/acs.analchem.3c05946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Visualizing the distribution of small-molecule drugs in living cells is an important strategy for developing specific, effective, and minimally toxic drugs. As an alternative to fluorescence imaging using bulky fluorophores or cell fixation, stimulated Raman scattering (SRS) imaging combined with bisarylbutadiyne (BADY) tagging enables the observation of small molecules closer to their native intracellular state. However, there is evidence that the physicochemical properties of BADY-tagged analogues of small-molecule drugs differ significantly from those of their parent drugs, potentially affecting their intracellular distribution. Herein, we developed a modified BADY to reduce deviations in physicochemical properties (in particular, lipophilicity and membrane permeability) between tagged and parent drugs, while maintaining high Raman activity in live-cell SRS imaging. We highlight the practical application of this approach by revealing the nuclear distribution of a modified BADY-tagged analogue of JQ1, a bromodomain and extra-terminal motif inhibitor with applications in targeted cancer therapy, in living HeLa cells. The modified BADY, methoxypyridazyl pyrimidyl butadiyne (MPDY), revealed intranuclear JQ1, while BADY-tagged JQ1 did not show a clear nuclear signal. We anticipate that the present approach combining MPDY tagging with live-cell SRS imaging provides important insight into the behavior of intracellular drugs and represents a promising avenue for improving drug development.
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Affiliation(s)
| | - Yuki Yonetani
- Future Technology R&D Center, Canon Inc., Tokyo 146-8501, Japan
| | - Takaha Mizuguchi
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Spencer J Spratt
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
| | - Masato Asanuma
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Hiroki Shimizu
- Organic & Biomolecular Chemistry Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630, Japan
| | - Masato Sasaki
- Organic & Biomolecular Chemistry Department, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630, Japan
| | - Yasuyuki Ozeki
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo 153-8904, Japan
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
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7
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Alieva M, Wezenaar AKL, Wehrens EJ, Rios AC. Bridging live-cell imaging and next-generation cancer treatment. Nat Rev Cancer 2023; 23:731-745. [PMID: 37704740 DOI: 10.1038/s41568-023-00610-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/25/2023] [Indexed: 09/15/2023]
Abstract
By providing spatial, molecular and morphological data over time, live-cell imaging can provide a deeper understanding of the cellular and signalling events that determine cancer response to treatment. Understanding this dynamic response has the potential to enhance clinical outcome by identifying biomarkers or actionable targets to improve therapeutic efficacy. Here, we review recent applications of live-cell imaging for uncovering both tumour heterogeneity in treatment response and the mode of action of cancer-targeting drugs. Given the increasing uses of T cell therapies, we discuss the unique opportunity of time-lapse imaging for capturing the interactivity and motility of immunotherapies. Although traditionally limited in the number of molecular features captured, novel developments in multidimensional imaging and multi-omics data integration offer strategies to connect single-cell dynamics to molecular phenotypes. We review the effect of these recent technological advances on our understanding of the cellular dynamics of tumour targeting and discuss their implication for next-generation precision medicine.
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Affiliation(s)
- Maria Alieva
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
- Instituto de Investigaciones Biomedicas Sols-Morreale (IIBM), CSIC-UAM, Madrid, Spain
| | - Amber K L Wezenaar
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
- Oncode Institute, Utrecht, The Netherlands
| | - Ellen J Wehrens
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.
- Oncode Institute, Utrecht, The Netherlands.
| | - Anne C Rios
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.
- Oncode Institute, Utrecht, The Netherlands.
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8
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Law SY, Asanuma M, Shou J, Ozeki Y, Kodama Y, Numata K. Deuterium- and Alkyne-Based Bioorthogonal Raman Probes for In Situ Quantitative Metabolic Imaging of Lipids within Plants. JACS AU 2023; 3:1604-1614. [PMID: 37388682 PMCID: PMC10302745 DOI: 10.1021/jacsau.3c00041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 07/01/2023]
Abstract
Plants can rapidly respond to different stresses by activating multiple signaling and defense pathways. The ability to directly visualize and quantify these pathways in real time using bioorthogonal probes would have practical applications, including characterizing plant responses to both abiotic and biotic stress. Fluorescence-based labels are widely used for tagging of small biomolecules but are relatively bulky and with potential effects on their endogenous localization and metabolism. This work describes the use of deuterium- and alkyne-derived fatty acid Raman probes to visualize and track the real-time response of plants to abiotic stress within the roots. Relative quantification of the respective signals could be used to track their localization and overall real-time responses in their fatty acid pools due to drought and heat stress without labor-intensive isolation procedures. Their overall usability and low toxicity suggest that Raman probes have great untapped potential in the field of plant bioengineering.
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Affiliation(s)
- Simon
Sau Yin Law
- Biomacromolecules
Research Team, RIKEN Center for Sustainable
Resource Science, Wako, Saitama 351-0198, Japan
| | - Masato Asanuma
- Graduate
School of Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jingwen Shou
- Graduate
School of Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yasuyuki Ozeki
- Graduate
School of Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yutaka Kodama
- Biomacromolecules
Research Team, RIKEN Center for Sustainable
Resource Science, Wako, Saitama 351-0198, Japan
- Center
for Bioscience Research and Education, Utsunomiya
University, Utsunomiya, Tochigi 321-8505, Japan
| | - Keiji Numata
- Biomacromolecules
Research Team, RIKEN Center for Sustainable
Resource Science, Wako, Saitama 351-0198, Japan
- Department
of Material Chemistry, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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9
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Shou J, Komazawa A, Wachi Y, Kawatani M, Fujioka H, Spratt SJ, Mizuguchi T, Oguchi K, Akaboshi H, Obata F, Tachibana R, Yasunaga S, Mita Y, Misawa Y, Kojima R, Urano Y, Kamiya M, Ozeki Y. Super-resolution vibrational imaging based on photoswitchable Raman probe. SCIENCE ADVANCES 2023; 9:eade9118. [PMID: 37327330 PMCID: PMC10275589 DOI: 10.1126/sciadv.ade9118] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 05/12/2023] [Indexed: 06/18/2023]
Abstract
Super-resolution vibrational microscopy is promising to increase the degree of multiplexing of nanometer-scale biological imaging because of the narrower spectral linewidth of molecular vibration compared to fluorescence. However, current techniques of super-resolution vibrational microscopy suffer from various limitations including the need for cell fixation, high power loading, or complicated detection schemes. Here, we present reversible saturable optical Raman transitions (RESORT) microscopy, which overcomes these limitations by using photoswitchable stimulated Raman scattering (SRS). We first describe a bright photoswitchable Raman probe (DAE620) and validate its signal activation and depletion characteristics when exposed to low-power (microwatt level) continuous-wave laser light. By harnessing the SRS signal depletion of DAE620 through a donut-shaped beam, we demonstrate super-resolution vibrational imaging of mammalian cells with excellent chemical specificity and spatial resolution beyond the optical diffraction limit. Our results indicate RESORT microscopy to be an effective tool with high potential for multiplexed super-resolution imaging of live cells.
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Affiliation(s)
- Jingwen Shou
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Ayumi Komazawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Yuusaku Wachi
- Department of Electrical and Electronic Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Minoru Kawatani
- Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa 226-8501, Japan
| | - Hiroyoshi Fujioka
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Spencer John Spratt
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Takaha Mizuguchi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Kenichi Oguchi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Hikaru Akaboshi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Fumiaki Obata
- Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Ryo Tachibana
- Department of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Shun Yasunaga
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
- Laboratory for Integrated Micro Mechatronic Systems, National Center for Scientific Research, The University of Tokyo, Tokyo 153-8505, Japan
| | - Yoshio Mita
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
- Laboratory for Integrated Micro Mechatronic Systems, National Center for Scientific Research, The University of Tokyo, Tokyo 153-8505, Japan
| | - Yoshihiro Misawa
- Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa 226-8501, Japan
| | - Ryosuke Kojima
- Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Yasuteru Urano
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
- Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Mako Kamiya
- Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa 226-8501, Japan
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, Kanagawa 226-8501 Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
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10
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Abstract
Lipids are essential cellular components forming membranes, serving as energy reserves, and acting as chemical messengers. Dysfunction in lipid metabolism and signaling is associated with a wide range of diseases including cancer and autoimmunity. Heterogeneity in cell behavior including lipid signaling is increasingly recognized as a driver of disease and drug resistance. This diversity in cellular responses as well as the roles of lipids in health and disease drive the need to quantify lipids within single cells. Single-cell lipid assays are challenging due to the small size of cells (∼1 pL) and the large numbers of lipid species present at concentrations spanning orders of magnitude. A growing number of methodologies enable assay of large numbers of lipid analytes, perform high-resolution spatial measurements, or permit highly sensitive lipid assays in single cells. Covered in this review are mass spectrometry, Raman imaging, and fluorescence-based assays including microscopy and microseparations.
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Affiliation(s)
- Ming Yao
- Department of Bioengineering, University of Washington, Seattle, Washington, USA; , ,
| | | | - Nancy L Allbritton
- Department of Bioengineering, University of Washington, Seattle, Washington, USA; , ,
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11
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Zhong W, Oda R, Ozeki Y, Yasui M, Nuriya M. Protocol to image deuterated propofol in living rat neurons using multimodal stimulated Raman scattering microscopy. STAR Protoc 2023; 4:102221. [PMID: 37060560 PMCID: PMC10140144 DOI: 10.1016/j.xpro.2023.102221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/07/2023] [Accepted: 03/13/2023] [Indexed: 04/16/2023] Open
Abstract
Propofol is a widely used anesthetic important in clinics, but like many other bioactive molecules, it is too small to be tagged and visualized by fluorescent dyes. Here, we present a protocol to visualize deuterated propofol in living rat neurons using stimulated Raman scattering (SRS) microscopy with carbon-deuterium bonds serving as a Raman tag. We describe the preparation and culture of rat neurons, followed by optimization of the SRS system. We then detail neuron loading and real-time imaging of anesthesia dynamics. For complete details on the use and execution of this protocol, please refer to Oda et al.1.
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Affiliation(s)
- Wenying Zhong
- Department of Pharmacology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Robert Oda
- Department of Pharmacology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan; Department of Electrical Engineering and Information Systems, Graduate School of Engineering, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, Graduate School of Engineering, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Masato Yasui
- Department of Pharmacology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Mutsuo Nuriya
- Department of Pharmacology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan; Graduate School of Environment and Information Sciences, Yokohama National University, 79-1 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, Japan.
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12
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Spratt SJ, Mizuguchi T, Akaboshi H, Kosakamoto H, Okada R, Obata F, Ozeki Y. Imaging the uptake of deuterated methionine in Drosophila with stimulated Raman scattering. Front Chem 2023; 11:1141920. [PMID: 37065821 PMCID: PMC10090404 DOI: 10.3389/fchem.2023.1141920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/16/2023] [Indexed: 03/31/2023] Open
Abstract
Introduction: Visualizing small individual biomolecules at subcellular resolution in live cells and tissues can provide valuable insights into metabolic activity in heterogeneous cells, but is challenging.Methods: Here, we used stimulated Raman scattering (SRS) microscopy to image deuterated methionine (d-Met) incorporated into Drosophila tissues in vivo.Results: Our results demonstrate that SRS can detect a range of previously uncharacterized cell-to-cell differences in d-Met distribution within a tissue at the subcellular level.Discussion: These results demonstrate the potential of SRS microscopy for metabolic imaging of less abundant but important amino acids such as methionine in tissue.
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Affiliation(s)
- Spencer J. Spratt
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan
| | - Takaha Mizuguchi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan
| | - Hikaru Akaboshi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan
| | - Hina Kosakamoto
- Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Rina Okada
- Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Fumiaki Obata
- Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
- Laboratory of Molecular Cell Biology and Development, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan
- *Correspondence: Yasuyuki Ozeki,
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13
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Kawatani M, Spratt SJ, Fujioka H, Shou J, Misawa Y, Kojima R, Urano Y, Ozeki Y, Kamiya M. 9-Cyano-10-telluriumpyronin Derivatives as Red-light-activatable Raman Probes. Chem Asian J 2023; 18:e202201086. [PMID: 36461627 PMCID: PMC10107100 DOI: 10.1002/asia.202201086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/05/2022]
Abstract
Photoactivatable fluorescence probes can track the dynamics of specific cells or biomolecules with high spatiotemporal resolution, but their broad absorption and emission peaks limit the number of wavelength windows that can be employed simultaneously. In contrast, the narrower peak width of Raman signals offers more scope for simultaneous discrimination of multiple targets, and therefore a palette of photoactivatable Raman probes would enable more comprehensive investigation of biological phenomena. Herein we report 9-cyano-10-telluriumpyronin (9CN-TeP) derivatives as photoactivatable Raman probes whose stimulated Raman scattering (SRS) intensity is enhanced by photooxidation of the tellurium atom. Modification to increase the stability of the oxidation product led to a julolidine-like derivative, 9CN-diMeJTeP, which is photo-oxidized at the tellurium atom by red light irradiation to afford a sufficiently stable oxidation product with strong electronic pre-resonance, resulting in a bathochromic shift of the absorption spectrum and increased SRS intensity.
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Affiliation(s)
- Minoru Kawatani
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa, 226-8501, Japan.,Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Spencer J Spratt
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Hiroyoshi Fujioka
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Jingwen Shou
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Yoshihiro Misawa
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa, 226-8501, Japan.,Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Ryosuke Kojima
- Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yasuteru Urano
- Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Mako Kamiya
- Department of Life Science and Technology, Tokyo Institute of Technology, Kanagawa, 226-8501, Japan.,Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan.,Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, Kanagawa, 226-8501, Japan
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14
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Wallmeier K, Würthwein T, Lemberger N, Brinkmann M, Hellwig T, Fallnich C. Frequency modulation stimulated Raman scattering scheme for real-time background correction with a single light source. BIOMEDICAL OPTICS EXPRESS 2023; 14:315-325. [PMID: 36698676 PMCID: PMC9841997 DOI: 10.1364/boe.476513] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
A frequency modulation (FM) scheme for stimulated Raman scattering (SRS) is presented with a single fiber-based light source. Pulse-to-pulse wavelength-switching allows real-time subtraction of parasitic signals leaving only the resonant SRS signal with a noise reduction of up to 30 % compared to digital subtraction schemes, leading effectively to a contrast improvement by a factor of up to 8.3. The wide tuning range of the light source from 1500 cm-1 to 3000 cm-1 and the possibility to separately adjust the resonant and the nonresonant wavenumber for every specimen allow to investigate a variety of samples with high contrast and high signal-to-noise ratio, e. g., for medical diagnostics.
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Affiliation(s)
- Kristin Wallmeier
- University of Münster
, Institute of Applied Physics, Corrensstraße 2, 48149 Münster, Germany
| | - Thomas Würthwein
- University of Münster
, Institute of Applied Physics, Corrensstraße 2, 48149 Münster, Germany
| | - Nick Lemberger
- University of Münster
, Institute of Applied Physics, Corrensstraße 2, 48149 Münster, Germany
| | | | - Tim Hellwig
- Refined Laser Systems GmbH, Mendelstraße 11, 48149 Münster, Germany
| | - Carsten Fallnich
- University of Münster
, Institute of Applied Physics, Corrensstraße 2, 48149 Münster, Germany
- University of Münster, Cells in Motion Interfaculty Centre, Münster, Germany
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15
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Xu Z, Oguchi K, Taguchi Y, Takahashi S, Sano Y, Mizuguchi T, Katoh K, Ozeki Y. Quantum-enhanced stimulated Raman scattering microscopy in a high-power regime. OPTICS LETTERS 2022; 47:5829-5832. [PMID: 37219114 DOI: 10.1364/ol.473130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/18/2022] [Indexed: 05/24/2023]
Abstract
Quantum-enhanced stimulated Raman scattering (QESRS) microscopy is expected to realize molecular vibrational imaging with sub-shot-noise sensitivity, so that weak signals buried in the laser shot noise can be uncovered. Nevertheless, the sensitivity of previous QESRS did not exceed that of state-of-the-art stimulated Raman scattering (SOA-SRS) microscopes mainly because of the low optical power (3 mW) of amplitude squeezed light [Nature594, 201 (2021)10.1038/s41586-021-03528-w]. Here, we present QESRS based on quantum-enhanced balanced detection (QE-BD). This method allows us to operate QESRS in a high-power regime (>30 mW) that is comparable to SOA-SRS microscopes, at the expense of 3 dB sensitivity drawback due to balanced detection. We demonstrate QESRS imaging with 2.89 dB noise reduction compared with classical balanced detection scheme. The present demonstration confirms that QESRS with QE-BD can work in the high-power regime, and paves the way for breaking the sensitivity of SOA-SRS microscopes.
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16
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Chen K, Li W, Xu K. Super-multiplexing excitation spectral microscopy with multiple fluorescence bands. BIOMEDICAL OPTICS EXPRESS 2022; 13:6048-6060. [PMID: 36733753 PMCID: PMC9872899 DOI: 10.1364/boe.473241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 06/18/2023]
Abstract
Fluorescence microscopy, with high molecular specificity and selectivity, is a valuable tool for studying complex biological systems and processes. However, the ability to distinguish a large number of distinct subcellular structures in a single sample is impeded by the broad spectra of molecular fluorescence. We have recently shown that excitation spectral microscopy provides a powerful means to unmix up to six fluorophores in a single fluorescence band. Here, by working with multiple fluorescence bands, we extend this approach to the simultaneous imaging of up to ten targets, with the potential for further expansions. By covering the excitation/emission bandwidth across the full visible range, an ultra-broad 24-wavelength excitation scheme is established through frame-synchronized scanning of the excitation wavelength from a white lamp via an acousto-optic tunable filter (AOTF), so that full-frame excitation-spectral images are obtained every 24 camera frames, offering superior spectral information and multiplexing capability. With numerical simulations, we validate the concurrent imaging of 10 fluorophores spanning the visible range to achieve exceptionally low (∼0.5%) crosstalks. For cell imaging experiments, we demonstrate unambiguous identification of up to eight different intracellular structures labeled by common fluorophores of substantial spectral overlap with minimal color crosstalks. We thus showcase an easy-to-implement, cost-effective microscopy system for visualizing complex cellular components with more colors and lower crosstalks.
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Affiliation(s)
- Kun Chen
- Department of Chemistry & California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, CA 94720, USA
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Wan Li
- Department of Chemistry & California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ke Xu
- Department of Chemistry & California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, CA 94720, USA
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17
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Benson S, de Moliner F, Tipping W, Vendrell M. Miniaturized Chemical Tags for Optical Imaging. Angew Chem Int Ed Engl 2022; 61:e202204788. [PMID: 35704518 PMCID: PMC9542129 DOI: 10.1002/anie.202204788] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 11/06/2022]
Abstract
Recent advances in optical bioimaging have prompted the need for minimal chemical reporters that can retain the molecular recognition properties and activity profiles of biomolecules. As a result, several methodologies to reduce the size of fluorescent and Raman labels to a few atoms (e.g., single aryl fluorophores, Raman-active triple bonds and isotopes) and embed them into building blocks (e.g., amino acids, nucleobases, sugars) to construct native-like supramolecular structures have been described. The integration of small optical reporters into biomolecules has also led to smart molecular entities that were previously inaccessible in an expedite manner. In this article, we review recent chemical approaches to synthesize miniaturized optical tags as well as some of their multiple applications in biological imaging.
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Affiliation(s)
- Sam Benson
- Centre for Inflammation ResearchThe University of EdinburghEdinburghEH16 4TJUK
| | - Fabio de Moliner
- Centre for Inflammation ResearchThe University of EdinburghEdinburghEH16 4TJUK
| | - William Tipping
- Centre for Molecular NanometrologyThe University of StrathclydeGlasgowG1 1RDUK
| | - Marc Vendrell
- Centre for Inflammation ResearchThe University of EdinburghEdinburghEH16 4TJUK
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18
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Benson S, de Moliner F, Tipping W, Vendrell M. Miniaturized Chemical Tags for Optical Imaging. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sam Benson
- The University of Edinburgh Centre for Inflammation Research UNITED KINGDOM
| | - Fabio de Moliner
- The University of Edinburgh Centre for Inflammation Research UNITED KINGDOM
| | - William Tipping
- University of Strathclyde Centre for Molecular Nanometrology UNITED KINGDOM
| | - Marc Vendrell
- University of Edinburgh Centre for Inflammation Research 47 Little France Crescent EH16 4TJ Edinburgh UNITED KINGDOM
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19
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Integrative metabolic flux analysis reveals an indispensable dimension of phenotypes. Curr Opin Biotechnol 2022; 75:102701. [DOI: 10.1016/j.copbio.2022.102701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/26/2022] [Accepted: 02/04/2022] [Indexed: 02/06/2023]
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20
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Xu Z, Oguchi K, Taguchi Y, Sano Y, Miyawaki Y, Cheon D, Katoh K, Ozeki Y. Stimulated Raman scattering spectroscopy with quantum-enhanced balanced detection. OPTICS EXPRESS 2022; 30:18589-18598. [PMID: 36221657 DOI: 10.1364/oe.456653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/02/2022] [Indexed: 06/16/2023]
Abstract
Quantum-enhanced stimulated Raman scattering (QE-SRS) is a promising technique for highly sensitive molecular vibrational imaging and spectroscopy surpassing the shot noise limit. However, the previous demonstrations of QE-SRS utilized rather weak optical power which hinders from competing with the sensitivity of state-of-the-art SRS microscopy and spectroscopy using relatively high-power optical pulses. Here, we demonstrate SRS spectroscopy with quantum-enhanced balanced detection (QE-BD) scheme, which works even when using high-power optical pulses. We used 4-ps pulses to generate pulsed squeezed vacuum at a wavelength of 844 nm with a squeezing level of -3.28 ± 0.12 dB generated from a periodically-poled stoichiometric LiTaO3 waveguide. The squeezed vacuum was introduced to an SRS spectrometer employing a high-speed spectral scanner to acquire QE-SRS spectrum in the wavenumber range of 2000-2280 cm-1 within 50 ms. Using SRS pump pulses with an average power of 11.3 mW, we successfully obtained QE-SRS spectrum whose SNR was better than classical SRS with balanced-detection by 2.27 dB.
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21
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Qian N, Min W. Super-multiplexed vibrational probes: Being colorful makes a difference. Curr Opin Chem Biol 2022; 67:102115. [PMID: 35077919 PMCID: PMC8940683 DOI: 10.1016/j.cbpa.2021.102115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 11/03/2022]
Abstract
Biological systems with intrinsic complexity require multiplexing techniques to comprehensively describe the phenotype, interaction, and heterogeneity. Recent years have witnessed the development of super-multiplexed vibrational microscopy, overcoming the 'color barrier' of fluorescence-based optical techniques. Here, we will review the recent progress in the design and applications of super-multiplexed vibrational probes. We hope to illustrate how rainbow-like vibrational colors can be generated from systematic studies on structure-spectroscopy relationships and how being colorful makes a difference to various biomedical applications.
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Affiliation(s)
- Naixin Qian
- Department of Chemistry, Columbia University, New York, NY, 10027, USA
| | - Wei Min
- Department of Chemistry, Columbia University, New York, NY, 10027, USA.
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22
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Oda R, Shou J, Zhong W, Ozeki Y, Yasui M, Nuriya M. Direct visualization of general anesthetic propofol on neurons by stimulated Raman scattering microscopy. iScience 2022; 25:103936. [PMID: 35252821 PMCID: PMC8894261 DOI: 10.1016/j.isci.2022.103936] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/28/2022] [Accepted: 02/14/2022] [Indexed: 11/29/2022] Open
Abstract
The consensus for the precise mechanism of action of general anesthetics is through allosteric interactions with GABA receptors in neurons. However, it has been speculated that these anesthetics may also interact with the plasma membrane on some level. Owing to the small size of anesthetics, direct visualization of these interactions is difficult to achieve. We demonstrate the ability to directly visualize a deuterated analog of propofol in living cells using stimulated Raman scattering (SRS) microscopy. Our findings support the theory that propofol is highly concentrated and interacts primarily through non-specific binding to the plasma membrane of neurons. Additionally, we show that SRS microscopy can be used to monitor the dynamics of propofol binding using real-time, live-cell imaging. The strategy used to visualize propofol can be applied to other small molecule drugs that have been previously invisible to traditional imaging techniques Multi-modal SRS developed for real-time biological imaging of small molecule substances Propofol primarily concentrates at the cell membrane of neurons Anesthesia dynamics can be monitored in real-time with SRS
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Affiliation(s)
- Robert Oda
- Department of Pharmacology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
- Department of Electrical Engineering and Information Systems, Graduate School of Engineering, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Corresponding author
| | - Jingwen Shou
- Department of Electrical Engineering and Information Systems, Graduate School of Engineering, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Wenying Zhong
- Department of Pharmacology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, Graduate School of Engineering, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Masato Yasui
- Department of Pharmacology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
| | - Mutsuo Nuriya
- Department of Pharmacology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
- Graduate School of Environment and Information Sciences, Yokohama National University, 79-1 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Corresponding author
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23
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Spratt SJ, Oguchi K, Miura K, Asanuma M, Kosakamoto H, Obata F, Ozeki Y. Probing Methionine Uptake in Live Cells by Deuterium Labeling and Stimulated Raman Scattering. J Phys Chem B 2022; 126:1633-1639. [PMID: 35195004 DOI: 10.1021/acs.jpcb.1c08343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The small biomolecule methionine (Met) is a fundamental amino acid required for a vast range of biological processes such as protein synthesis, cancer metabolism, and epigenetics. However, it is still difficult to visualize the subcellular distribution of small biomolecules including Met in a minimally invasive manner. Here, we demonstrate stimulated Raman scattering (SRS) imaging of cellular uptake of deuterated methionine (d8-Met) in live HeLa cells by way of comparison to the previously used alkyne-labeled Met analogue─homopropargylglycine (Hpg). We show that the solutions of d8-Met and Hpg have similar SRS signal intensities. Furthermore, by careful image analysis with background subtraction, we succeed in the SRS imaging of cellular uptake of d8-Met with a much greater signal intensity than Hpg, possibly reflecting the increased and minimally invasive uptake kinetics of d8-Met compared with Hpg. We anticipate that d8-Met and other deuterated biomolecules will be useful for investigating metabolic processes with subcellular resolution.
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Affiliation(s)
- Spencer J Spratt
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Kenichi Oguchi
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Keisuke Miura
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Masato Asanuma
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
| | - Hina Kosakamoto
- Department of Genetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.,Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Fumiaki Obata
- Department of Genetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.,Laboratory for Nutritional Biology, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.,Laboratory of Molecular Cell Biology and Development, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Yasuyuki Ozeki
- Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo 113-8656, Japan
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24
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Nuriya M. [Application of non-linear Raman scattering microscopy to pharmacology to visualize invisible targets]. Nihon Yakurigaku Zasshi 2022; 157:371-375. [PMID: 36047156 DOI: 10.1254/fpj.22060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Visualization and measurement of drugs themselves as well as biological responses to those drugs are crucial in pharmacological research. To this end, various fluorescent dyes and proteins have been developed. Despite such progresses, there still remains technical difficulties to overcome in bioimaging that keep many pharmacological targets and phenomena invisible. Outside the fields of biology where fluorescence and luminescence prevail, variety of other optical phenomena are well known and utilized. These optical phenomena can shed unique lights on biological phenomena based on their specific physical and chemical properties. Although applications of these optical phenomena to biology are yet to be explored, they have high potentials in realizing visualization and measurement of currently invisible targets and phenomena, and thereby bringing new insights into pharmacological research. Thus, here I will introduce Raman scattering microscopy that visualize vibration of functional groups as an alternative imaging platform to fluorescence and luminescence. Special focus will be put on two recent technical advancements; namely, nonlinear Raman scattering microscopy that utilizes multi-photon effect of highly tissue penetrating near-infrared lights, and Raman-tag that realizes tagging of targets that could not have been labeled, combination of which is expected to pave a way toward imaging previously invisible targets in pharmacology.
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Affiliation(s)
- Mutsuo Nuriya
- Department of Pharmacology, Keio University School of Medicine
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25
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Würthwein T, Wallmeier K, Brinkmann M, Hellwig T, Lüpken NM, Lemberger NS, Fallnich C. Multi-color stimulated Raman scattering with a frame-to-frame wavelength-tunable fiber-based light source. BIOMEDICAL OPTICS EXPRESS 2021; 12:6228-6236. [PMID: 34745731 PMCID: PMC8547978 DOI: 10.1364/boe.436299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
We present multi-color imaging by stimulated Raman scattering (SRS) enabled by an ultrafast fiber-based light source with integrated amplitude modulation and frame-to-frame wavelength tuning. With a relative intensity noise level of -153.7 dBc/Hz at 20.25 MHz the light source is well suited for SRS imaging and outperforms other fiber-based light source concepts for SRS imaging. The light source is tunable in under 5 ms per arbitrary wavelength step between 700 cm-1 and 3200 cm-1, which allows for addressing Raman resonances from the fingerprint to the CH-stretch region. Moreover, the compact and environmentally stable system is predestined for fast multi-color assessments of medical or rapidly evolving samples with high chemical specificity, paving the way for diagnostics and sensing outside of specialized laser laboratories.
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Affiliation(s)
- Thomas Würthwein
- Institute of Applied Physics, University of Münster, Corrensstraße 2, 48149 Münster, Germany
| | - Kristin Wallmeier
- Institute of Applied Physics, University of Münster, Corrensstraße 2, 48149 Münster, Germany
| | | | - Tim Hellwig
- Refined Laser Systems GmbH, Mendelstraße 11, 48149 Münster, Germany
| | - Niklas M. Lüpken
- Institute of Applied Physics, University of Münster, Corrensstraße 2, 48149 Münster, Germany
| | - Nick S. Lemberger
- Institute of Applied Physics, University of Münster, Corrensstraße 2, 48149 Münster, Germany
| | - Carsten Fallnich
- Institute of Applied Physics, University of Münster, Corrensstraße 2, 48149 Münster, Germany
- MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede 7500 AE, The Netherlands
- Cells in Motion Interfaculty Centre, University of Münster, Münster, Germany
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