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Yuzu K, Lin CY, Yi PW, Huang CH, Masuhara H, Chatani E. Spatiotemporal formation of a single liquid-like condensate and amyloid fibrils of α-synuclein by optical trapping at solution surface. Proc Natl Acad Sci U S A 2024; 121:e2402162121. [PMID: 39292741 PMCID: PMC11441557 DOI: 10.1073/pnas.2402162121] [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: 02/01/2024] [Accepted: 08/14/2024] [Indexed: 09/20/2024] Open
Abstract
Liquid-like protein condensates have recently attracted much attention due to their critical roles in biological phenomena. They typically show high fluidity and reversibility for exhibiting biological functions, while occasionally serving as sites for the formation of amyloid fibrils. To comprehend the properties of protein condensates that underlie biological function and pathogenesis, it is crucial to study them at the single-condensate level; however, this is currently challenging due to a lack of applicable methods. Here, we demonstrate that optical trapping is capable of inducing the formation of a single liquid-like condensate of α-synuclein in a spatiotemporally controlled manner. The irradiation of tightly focused near-infrared laser at an air/solution interface formed a condensate under conditions coexisting with polyethylene glycol. The fluorescent dye-labeled imaging showed that the optically induced condensate has a gradient of protein concentration from the center to the edge, suggesting that it is fabricated through optical pumping-up of the α-synuclein clusters and the expansion along the interface. Furthermore, Raman spectroscopy and thioflavin T fluorescence analysis revealed that continuous laser irradiation induces structural transition of protein molecules inside the condensate to β-sheet rich structure, ultimately leading to the condensate deformation and furthermore, the formation of amyloid fibrils. These observations indicate that optical trapping is a powerful technique for examining the microscopic mechanisms of condensate appearance and growth, and furthermore, subsequent aging leading to amyloid fibril formation.
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Affiliation(s)
- Keisuke Yuzu
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Ching-Yang Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Po-Wei Yi
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Chih-Hao Huang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Hiroshi Masuhara
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Eri Chatani
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe 657-8501, Japan
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Kudo T, Louis B, Sotome H, Chen JK, Ito S, Miyasaka H, Masuhara H, Hofkens J, Bresolí-Obach R. Gaining control on optical force by the stimulated-emission resonance effect. Chem Sci 2023; 14:10087-10095. [PMID: 37772121 PMCID: PMC10530829 DOI: 10.1039/d3sc01927f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/18/2023] [Indexed: 09/30/2023] Open
Abstract
The resonance between an electronic transition of a micro/nanoscale object and an incident photon flux can modify the radiation force exerted on that object, especially at an interface. It has been theoretically proposed that a non-linear stimulated emission process can also induce an optical force, however its direction will be opposite to conventional photon scattering/absorption processes. In this work, we experimentally and theoretically demonstrate that a stimulated emission process can induce a repulsive pulling optical force on a single trapped dye-doped particle. Moreover, we successfully integrate both attractive pushing (excited state absorption) and repulsive pulling (stimulated emission) resonance forces to control the overall exerted optical force on an object, validating the proposed non-linear optical resonance theory. Indeed, the results presented here will enable the optical manipulation of the exerted optical force with exquisite control and ultimately enable single particle manipulation.
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Affiliation(s)
- Tetsuhiro Kudo
- Laser Science Laboratory, Toyota Technological Institute Hisakata, Tempaku-ku Nagoya 468-8511 Japan
| | - Boris Louis
- Laboratory for Photochemistry and Spectroscopy, Division for Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven Belgium
- Division of Chemical Physics and NanoLund, Lund University P.O. Box 124 Lund Sweden
| | - Hikaru Sotome
- Division of Frontier Materials Science and Center for Promotion of Advanced Interdisciplinary Research, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Jui-Kai Chen
- Laboratory for Photochemistry and Spectroscopy, Division for Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven Belgium
| | - Syoji Ito
- Division of Frontier Materials Science and Center for Promotion of Advanced Interdisciplinary Research, Osaka University Toyonaka Osaka 560-8531 Japan
- Research Institute for Light-induced Acceleration System (RILACS), Osaka Metropolitan University 1-2, Gakuen-cho, Naka-ku Sakai Osaka 599-8570 Japan
| | - Hiroshi Miyasaka
- Division of Frontier Materials Science and Center for Promotion of Advanced Interdisciplinary Research, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Hiroshi Masuhara
- Department of Applied Chemistry, College of Science, National Yang Ming Chiao Tung University Hsinchu Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University Hsinchu Taiwan
| | - Johan Hofkens
- Laboratory for Photochemistry and Spectroscopy, Division for Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven Belgium
- Max Planck Institute for Polymer Research Mainz 55128 Germany
| | - Roger Bresolí-Obach
- Laboratory for Photochemistry and Spectroscopy, Division for Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven Belgium
- AppLightChem, Institut Químic de Sarrià, Universitat Ramon Llull Barcelona Catalunya Spain
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Zhou LM, Shi Y, Zhu X, Hu G, Cao G, Hu J, Qiu CW. Recent Progress on Optical Micro/Nanomanipulations: Structured Forces, Structured Particles, and Synergetic Applications. ACS NANO 2022; 16:13264-13278. [PMID: 36053722 DOI: 10.1021/acsnano.2c05634] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Optical manipulation has achieved great success in the fields of biology, micro/nano robotics and physical sciences in the past few decades. To date, the optical manipulation is still witnessing substantial progress powered by the growing accessibility of the complex light field, advanced nanofabrication and developed understandings of light-matter interactions. In this perspective, we highlight recent advancements of optical micro/nanomanipulations in cutting-edge applications, which can be fostered by structured optical forces enabled with diverse auxiliary multiphysical field/forces and structured particles. We conclude with our vision of ongoing and futuristic directions, including heat-avoided and heat-utilized manipulation, nonlinearity-mediated trapping and manipulation, metasurface/two-dimensional material based optical manipulation, as well as interface-based optical manipulation.
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Affiliation(s)
- Lei-Ming Zhou
- Department of Optical Engineering, School of Physics, Hefei University of Technology, Hefei 230601, China
| | - Yuzhi Shi
- Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
- MOE Key Laboratory of Advanced Micro-Structured Materials, Shanghai 200092, China
| | - Xiaoyu Zhu
- Department of Optical Engineering, School of Physics, Hefei University of Technology, Hefei 230601, China
| | - Guangwei Hu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
| | - Guangtao Cao
- School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410004, China
| | - Jigang Hu
- Department of Optical Engineering, School of Physics, Hefei University of Technology, Hefei 230601, China
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
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Abstract
Progress in optical manipulation has stimulated remarkable advances in a wide range of fields, including materials science, robotics, medical engineering, and nanotechnology. This Review focuses on an emerging class of optical manipulation techniques, termed heat-mediated optical manipulation. In comparison to conventional optical tweezers that rely on a tightly focused laser beam to trap objects, heat-mediated optical manipulation techniques exploit tailorable optothermo-matter interactions and rich mass transport dynamics to enable versatile control of matter of various compositions, shapes, and sizes. In addition to conventional tweezing, more distinct manipulation modes, including optothermal pulling, nudging, rotating, swimming, oscillating, and walking, have been demonstrated to enhance the functionalities using simple and low-power optics. We start with an introduction to basic physics involved in heat-mediated optical manipulation, highlighting major working mechanisms underpinning a variety of manipulation techniques. Next, we categorize the heat-mediated optical manipulation techniques based on different working mechanisms and discuss working modes, capabilities, and applications for each technique. We conclude this Review with our outlook on current challenges and future opportunities in this rapidly evolving field of heat-mediated optical manipulation.
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Affiliation(s)
- Zhihan Chen
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jingang Li
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yuebing Zheng
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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Tiwari S, Khandelwal U, Sharma V, Kumar GVP. Single Molecule Surface Enhanced Raman Scattering in a Single Gold Nanoparticle-Driven Thermoplasmonic Tweezer. J Phys Chem Lett 2021; 12:11910-11918. [PMID: 34878793 DOI: 10.1021/acs.jpclett.1c03450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Surface enhanced Raman scattering (SERS) is optically sensitive and chemically specific to detect single-molecule spectroscopic signatures. Facilitating this capability in optically trapped nanoparticles at low laser power remains a significant challenge. In this letter, we show single molecule SERS signatures in reversible assemblies of trapped plasmonic nanoparticles using a single laser excitation (633 nm). Importantly, this trap is facilitated by the thermoplasmonic field of a single gold nanoparticle dropcasted on a glass surface. We employ the bianalyte SERS technique to ascertain the single molecule statistical signatures and identify the critical parameters of the thermoplasmonic tweezer that provide this sensitivity. Furthermore, we show the utility of this low power (≈ 0.1 mW/μm2) tweezer platform to trap a single gold nanoparticle and transport assembly of nanoparticles. Given that our configuration is based on a dropcasted gold nanoparticle, we envisage its utility to create reconfigurable plasmonic metafluids in physiological and catalytic environments and to be potentially adapted as an in vivo plasmonic tweezer.
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Affiliation(s)
- Sunny Tiwari
- Department of Physics, Indian Institute of Science Education and Research, Pune, 411008, India
| | - Utkarsh Khandelwal
- Department of Physics, Indian Institute of Science Education and Research, Pune, 411008, India
| | - Vandana Sharma
- Department of Physics, Indian Institute of Science Education and Research, Pune, 411008, India
| | - G V Pavan Kumar
- Department of Physics, Indian Institute of Science Education and Research, Pune, 411008, India
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Kamit A, Tseng C, Kudo T, Sugiyama T, Hofkens J, Bresolí‐Obach R, Masuhara H. Unraveling the three‐dimensional morphology and dynamics of the optically evolving polystyrene nanoparticle assembly using dual‐objective lens microscopy. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Abdullah Kamit
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
| | - Ching‐Shiang Tseng
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
| | - Tetsuhiro Kudo
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
- Laser Science Laboratory Toyota Technological University Nagoya Japan
| | - Teruki Sugiyama
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
- Division of Materials Science, Graduate School of Science and Technology Nara Institute of Science and Technology Ikoma Nara Japan
| | - Johan Hofkens
- Department of Chemistry Katholieke Universiteit Leuven Leuven Belgium
- Max‐Planck‐Institute for Polymer Research Mainz Germany
| | - Roger Bresolí‐Obach
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
- Department of Chemistry Katholieke Universiteit Leuven Leuven Belgium
| | - Hiroshi Masuhara
- Department of Applied Chemistry and Center for Emergent Functional Matter Science National Yang Ming Chao Tung University Hsinchu Taiwan
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