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Kamei Y, Kaito S, Matsuyama T, Wada K, Funato M, Kawakami Y, Okamoto K. High-efficiency green light emission from InGaN/GaN using localized surface plasmon resonance tuned by combination of Ag nanoparticles and dielectric thin film. OPTICS EXPRESS 2024; 32:21389-21399. [PMID: 38859493 DOI: 10.1364/oe.521486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/14/2024] [Indexed: 06/12/2024]
Abstract
We achieved significant enhancements in green light emission (550 nm) from InGaN/GaN quantum wells (QWs) by tuning the localized surface plasmon resonance (LSPR) of self-assembled Ag nanoparticles (NPs) through the application of a SiO2 thin film. The LSPR wavelength of Ag NPs was shifted towards shorter wavelengths by 80 nm using a 5 nm SiO2 layer to separate Ag NPs from GaN surface, thereby aligning it effectively with the green region. This strategic placement of Ag NPs and a 5 nm SiO2 film resulted in significant enhancements of photoluminescence (PL) by 15- and 8.8-fold with 5 and 11 nm GaN cap layers, respectively. The LSPR of Ag NPs on a SiO2 thin film facilitated a longer possible distance for the coupling between surface plasmons (SPs) and excitons in a QW. Traditionally, the distance between SPs-generating metal and a QW has been maintained at 10 nm to achieve substantial enhancements. Remarkably, even with a 25 nm cap layer, Ag NPs on a 5 nm SiO2 film boosted PL by 3.1-fold. The enhancements attributable to Ag NPs on SiO2 films were superior, reaching up to 4.8 times greater than those of Ag NPs on GaN surfaces. Additionally, the PL enhancement factors calculated using the finite differential time domain (FDTD) method aligned closely with experimental results.
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2
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Lee ST, Kuboki T, Kidoaki S, Aida Y, Arima Y, Tamada K. A plasmonic metasurface reveals differential motility of breast cancer cell lines at initial phase of adhesion. Colloids Surf B Biointerfaces 2024; 238:113876. [PMID: 38555764 DOI: 10.1016/j.colsurfb.2024.113876] [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: 01/31/2024] [Revised: 03/17/2024] [Accepted: 03/23/2024] [Indexed: 04/02/2024]
Abstract
A plasmonic metasurface composed of a self-assembled monolayer of gold nanoparticles allows for fluorescence imaging with high spatial resolution, owing to the collective excitation of localized surface plasmon resonance. Taking advantage of fluorescence imaging confined to the nano-interface, we examined actin organization in breast cancer cell lines with different metastatic potentials during cell adhesion. Live-cell fluorescence imaging confined within tens of nanometers from the substrate shows a high actin density spanning < 1 μm from the cell edge. Live-cell imaging revealed that the breast cancer cell lines exhibited different actin patterns during the initial phase of cell adhesion (∼ 1 h). Non-tumorous MCF10A cells exhibited symmetric actin localization at the cell edge, whereas highly metastatic MDA-MB-231 cells showed asymmetric actin localization, demonstrating rapid polarization of MDA-MB-231 cells upon adhesion. The rapid actin organization observed by our plasmonic metasurface-based fluorescence imaging provides information on how quickly cancer cells sense the underlying substrate.
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Affiliation(s)
- Shi Ting Lee
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Thasaneeya Kuboki
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Satoru Kidoaki
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yukiko Aida
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yusuke Arima
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kaoru Tamada
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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3
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Sutarlie L, Chee HL, Ow SY, Aabdin Z, Tjiu WW, Su X. A rapid total bacterial count method using gold nanoparticles conjugated with an aptamer for water quality assessment. NANOSCALE 2023; 15:16675-16686. [PMID: 37823252 DOI: 10.1039/d3nr02635c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Total bacterial count is a routine parameter in microbial safety assessment used in many fields, such as drinking water and industrial water testing. The current gold standard method for counting bacteria is the plate culture method (or heterotrophic plate count) that requires a microbiology laboratory and a long turnover time of at least 24 hours. To tackle these shortcomings, we developed a rapid total bacterial count method that relies on gold nanoparticles (AuNPs) conjugated with affinity ligands to stain bacterial cells captured on a syringe filter. Two affinity ligands were exploited, i.e. a DNA aptamer (AB2) and a lectin Griffonia simplicifolia II (GSII) that recognize bacterial cell wall commonalities, i.e. peptidoglycan and its amino sugars. Upon proper formulation with addition of a surfactant, the AB2 conjugated AuNPs (AB2-AuNPs) can selectively stain bacterial cells captured on the filter membrane with a higher sensitivity than GSII-AuNPs. Measuring the staining intensity using an in-house-built handheld detector allowed us to correlate its intensity reading with the total number of bacterial units present. This bacteria quantification method, referred to as "Filter-and-Stain", had an efficient turnover time of 20 min suggesting its potential usage for rapid on-site applications. Additionally, the detection sensitivity provided by the AB2-AuNP nanoreagent offered a limit of detection as low as 100 CFU mL-1. We have demonstrated the use of the AB2-AuNPs for detection of bacteria from environmental water samples.
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Affiliation(s)
- Laura Sutarlie
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
| | - Heng Li Chee
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
| | - Sian Yang Ow
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
| | - Zainul Aabdin
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
| | - Weng Weei Tjiu
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
| | - Xiaodi Su
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore.
- Department of Chemistry, National University of Singapore, Block S8, Level 3, 3 Science Drive 3, Singapore 117543
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4
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New Plasmonic Sensor Platform Using a Spatially Controlled Photochemical Reaction and Enhanced Fluorescence. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Treasure on the Earth—Gold Nanoparticles and Their Biomedical Applications. MATERIALS 2022; 15:ma15093355. [PMID: 35591689 PMCID: PMC9105202 DOI: 10.3390/ma15093355] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/25/2022] [Accepted: 05/04/2022] [Indexed: 02/04/2023]
Abstract
Recent advances in the synthesis of metal nanoparticles (NPs) have led to tremendous expansion of their potential applications in different fields, ranging from healthcare research to microelectronics and food packaging. Among the approaches for exploiting nanotechnology in medicine, gold nanomaterials in particular have been found as the most promising due to their unique advantages, such as in sensing, image enhancement, and as delivery agents. Although, the first scientific article on gold nanoparticles was presented in 1857 by Faraday, during the last few years, the progress in manufacturing these nanomaterials has taken an enormous step forward. Due to the nanoscale counterparts of gold, which exhibit distinct properties and functionality compared to bulk material, gold nanoparticles stand out, in particular, in therapy, imaging, detection, diagnostics, and precise drug delivery. This review summarizes the current state-of-the-art knowledge in terms of biomedical applications of gold nanoparticles. The application of AuNPs in the following aspects are discussed: (i) imaging and diagnosing of specific target; (ii) treatment and therapies using AuNPs; and (iii) drug delivery systems with gold nanomaterials as a carrier. Among the different approaches in medical imaging, here we either consider AuNPs as a contrast agent in computed tomography (CT), or as a particle used in optical imaging, instead of fluorophores. Moreover, their nontoxic feature, compared to the gadolinium-based contrast agents used in magnetic resonance imaging, are shown. The tunable size, shape, and functionality of gold nanoparticles make them great carriers for targeted delivery. Therefore, here, we summarize gold-based nanodrugs that are FDA approved. Finally, various approaches to treat the specific diseases using AuNPs are discussed, i.e., photothermal or photodynamic therapy, and immunotherapy.
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6
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Mitomo H, Takeuchi C, Sugiyama R, Tamada K, Ijiro K. Thermo-responsive Silver Nanocube Assembled Films. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220047] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hideyuki Mitomo
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Chie Takeuchi
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Ryo Sugiyama
- Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-Ku, Sapporo, 060-0810, Japan
| | - Kaoru Tamada
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kuniharu Ijiro
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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7
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Nakamura S, Mitomo H, Sekizawa Y, Higuchi T, Matsuo Y, Jinnai H, Ijiro K. Strategy for Finely Aligned Gold Nanorod Arrays Using Polymer Brushes as a Template. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3590-3599. [PMID: 32049537 DOI: 10.1021/acs.langmuir.9b03835] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The development of a strategy for the assembly of nanoscale building blocks, in particular, anisotropic nanoparticles, into desired structures is important for the construction of functional materials and devices. However, control over the orientation of rod-shaped nanoparticles on a substrate for integration into solid-state devices remains challenging. Here, we report a strategy for the fabrication of finely aligned gold nanorod (GNR) arrays using polymer (DNA) brushes as a nanoscale template. The gold nanorods modified with cationic surface ligands were electrostatically adsorbed onto the DNA brush substrates under various conditions. The orientational behavior of the GNRs was examined by spectral analyses and transmission electron microtomography (TEMT). As a result, we found several important factors, such as moderate interaction between GNRs and polymers and polymer densities on the substrate, related to the vertical alignment of GNRs on the substrates. We also developed a purification method to remove the undesired adsorption of GNRs onto the arrays. Finally, we have succeeded in the fabrication of extensive vertical GNR arrays of high quality via the easy bottom-up process.
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Affiliation(s)
- Satoshi Nakamura
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-Ku, Sapporo 060-8628, Japan
| | - Hideyuki Mitomo
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-Ku, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Kita 21, Nishi 11, Kita-Ku, Sapporo 001-0021, Japan
| | - Yu Sekizawa
- Graduate School of Life Sciences, Hokkaido University, Kita 10, Nishi 8, Kita-Ku, Sapporo 060-0810, Japan
| | - Takeshi Higuchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Yasutaka Matsuo
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-Ku, Sapporo 001-0021, Japan
| | - Hiroshi Jinnai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Kuniharu Ijiro
- Research Institute for Electronic Science, Hokkaido University, Kita 21, Nishi 10, Kita-Ku, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Kita 21, Nishi 11, Kita-Ku, Sapporo 001-0021, Japan
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8
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Sharifi M, Attar F, Saboury AA, Akhtari K, Hooshmand N, Hasan A, El-Sayed MA, Falahati M. Plasmonic gold nanoparticles: Optical manipulation, imaging, drug delivery and therapy. J Control Release 2019; 311-312:170-189. [PMID: 31472191 DOI: 10.1016/j.jconrel.2019.08.032] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/25/2019] [Accepted: 08/26/2019] [Indexed: 12/20/2022]
Abstract
Over the past two decades, the development of plasmonic nanoparticle (NPs), especially gold (Au) NPs, is being pursued more seriously in the medical fields such as imaging, drug delivery, and theranostic systems. However, there is no comprehensive review on the effect of the physical and chemical parameters of AuNPs on their plasmonic properties as well as the use of these unique characteristic in medical activities such as imaging and therapeutics. Therefore, in this literature the surface plasmon resonance (SPR) modeling of AuNPs was accurately captured toward precision medicine. Indeed, we investigated the importance of plasmonic properties of AuNPs in optical manipulation, imaging, drug delivery, and photothermal therapy (PTT) of cancerous cells based on their physicochemical properties. Finally, some challenges regarding the commercialization of AuNPs in future medicine such as, cytotoxicity, lack of standards for medical applications, high cost, and time-consuming process were discussed.
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Affiliation(s)
- Majid Sharifi
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Farnoosh Attar
- Department of Biology, Faculty of Food Industry & Agriculture, Standard Research Institute, Karaj, Iran
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, Sanandaj, Iran
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; Biomedical Research Center, Qatar University, Doha 2713, Qatar.
| | - Mostafa A El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, United States.
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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9
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Yamamoto H, Grob L, Sumi T, Oiwa K, Hirano-Iwata A, Wolfrum B. Ultrasoft Silicone Gel as a Biomimetic Passivation Layer in Inkjet-Printed 3D MEA Devices. ACTA ACUST UNITED AC 2019; 3:e1900130. [PMID: 32648655 DOI: 10.1002/adbi.201900130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/25/2019] [Indexed: 12/15/2022]
Abstract
Multielectrode arrays (MEAs) are versatile tools that are used for chronic recording and stimulation of neural cells and tissues. Driven by the recent progress in understanding of how neuronal growth and function respond to scaffold stiffness, development of MEAs with a soft cell-to-device interface has gained importance not only for in vivo but also for in vitro applications. However, the passivation layer, which constitutes the majority of the cell-device interface, is typically prepared with stiff materials. Herein, a fabrication of an MEA device with an ultrasoft passivation layer is described, which takes advantage of inkjet printing and a polydimethylsiloxane (PDMS) gel with a stiffness comparable to that of the brain. The major challenge in using the PDMS gel is that it cannot be patterned to expose the sensing area of the electrode. This issue is resolved by printing 3D micropillars at the electrode tip. Primary cortical neurons are grown on the fabricated device, and effective stimulation of the culture confirms functional cell-device coupling. The 3D MEA device with an ultrasoft interface provides a novel platform for investigating evoked activity and drug responses of living neuronal networks cultured in a biomimetic environment for both fundamental research and pharmaceutical applications.
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Affiliation(s)
- Hideaki Yamamoto
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Institute for Advanced Study, Technische Universität München, Lichtenbergstraße 2a, 85748, Garching, Germany
| | - Leroy Grob
- Munich School of BioengineeringDepartment of Electrical and Computer Engineering, Technische Universität München, Boltzmannstraße 11, 85748, Garching, Germany
| | - Takuma Sumi
- Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Kazuhiro Oiwa
- Advanced ICT Research Institute, National Institute of Information and Communication Technology, 588-2 Iwaoka, Iwaoka-cho, Nishi-ku, Kobe, 651-2492, Japan
| | - Ayumi Hirano-Iwata
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Bernhard Wolfrum
- Munich School of BioengineeringDepartment of Electrical and Computer Engineering, Technische Universität München, Boltzmannstraße 11, 85748, Garching, Germany
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10
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Masuda S, Mielke S, Amadei F, Yamamoto A, Wang P, Taniguchi T, Yoshikawa K, Tamada K, Tanaka M. Nonlinear Viscoelasticity of Highly Ordered, Two-Dimensional Assemblies of Metal Nanoparticles Confined at the Air/Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13025-13034. [PMID: 30265009 DOI: 10.1021/acs.langmuir.8b02713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we investigated the viscoelastic properties of metal nanoparticle monolayers at the air/water interface by dilational rheology under periodic oscillation of surface area. Au nanoparticles capped with oleylamine form a stable, dense monolayer on a Langmuir film balance. The stress response function of a nanoparticle monolayer was first analyzed using the classical Kelvin-Voigt model, yielding the spring constant and viscosity. The obtained results suggest that the monolayer of nanoparticles is predominantly elastic, forming a two-dimensional physical gel. As the global shape of the signal exhibited a clear nonlinearity, we further analyzed the data with the higher modes in the Fourier series expansion. The imaginary part of the higher mode signal was stronger than the real part, suggesting that the dissipative term mainly causes the nonlinearity. Intriguingly, the response function measured at larger strain amplitude became asymmetric, accompanied by the emergence of even modes. The significance of interactions between nanoparticles was quantitatively assessed by calculating the potential of mean force, indicating that the lateral correlation could reach up to the distance much larger than the particle diameter. The influence of surface chemical functions and core metal has also been examined by using Au nanoparticles capped with partially fluorinated alkanethiolate and Ag nanoparticles capped with myristic acid. The combination of dilational rheology and correlation analyses can help us precisely control two-dimensional colloidal assembly of metal nanoparticles with fine-adjustable localized surface plasmon resonance.
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Affiliation(s)
- Shihomi Masuda
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
- Institute for Materials Chemistry and Engineering (IMCE) , Kyushu University , 819-0395 Fukuoka , Japan
| | - Salomé Mielke
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Federico Amadei
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Akihisa Yamamoto
- Center for Integrative Medicine and Physics, Institute for Advanced Study , Kyoto University , 606-8501 Kyoto , Japan
| | - Pangpang Wang
- Institute for Materials Chemistry and Engineering (IMCE) , Kyushu University , 819-0395 Fukuoka , Japan
| | - Takashi Taniguchi
- Department of Chemical Engineering, Graduate School of Engineering , Kyoto University , 615-8510 Kyoto , Japan
| | - Kenichi Yoshikawa
- Center for Integrative Medicine and Physics, Institute for Advanced Study , Kyoto University , 606-8501 Kyoto , Japan
- Faculty of Life and Medical Sciences , Doshisha University , 610-0321 Kyotanabe , Japan
| | - Kaoru Tamada
- Institute for Materials Chemistry and Engineering (IMCE) , Kyushu University , 819-0395 Fukuoka , Japan
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
- Center for Integrative Medicine and Physics, Institute for Advanced Study , Kyoto University , 606-8501 Kyoto , Japan
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11
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Westmeier D, Hahlbrock A, Reinhardt C, Fröhlich-Nowoisky J, Wessler S, Vallet C, Pöschl U, Knauer SK, Stauber RH. Nanomaterial–microbe cross-talk: physicochemical principles and (patho)biological consequences. Chem Soc Rev 2018; 47:5312-5337. [DOI: 10.1039/c6cs00691d] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
NPs’ characteristics impact their spontaneous binding to microbes, which may affect the (patho)biological identity of both NP and microbes.
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Affiliation(s)
- D. Westmeier
- Department of Nanobiomedicine/ENT
- University Medical Center of Mainz
- 55101 Mainz
- Germany
| | - A. Hahlbrock
- Department of Nanobiomedicine/ENT
- University Medical Center of Mainz
- 55101 Mainz
- Germany
| | - C. Reinhardt
- Center for Thrombosis and Hemostasis
- University Medical Center Mainz
- 55101 Mainz
- Germany
| | - J. Fröhlich-Nowoisky
- Multiphase Chemistry Department
- Max Planck Institute for Chemistry
- 55128 Mainz
- Germany
| | - S. Wessler
- Department of Molecular Biology
- Paris-Lodron University of Salzburg
- A-5020 Salzburg
- Austria
| | - C. Vallet
- Institute for Molecular Biology
- CENIDE
- University Duisburg-Essen
- 45117 Essen
- Germany
| | - U. Pöschl
- Multiphase Chemistry Department
- Max Planck Institute for Chemistry
- 55128 Mainz
- Germany
| | - S. K. Knauer
- Institute for Molecular Biology
- CENIDE
- University Duisburg-Essen
- 45117 Essen
- Germany
| | - R. H. Stauber
- Department of Nanobiomedicine/ENT
- University Medical Center of Mainz
- 55101 Mainz
- Germany
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12
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Usukura E, Yanase Y, Ishijima A, Kuboki T, Kidoaki S, Okamoto K, Tamada K. LSPR-mediated high axial-resolution fluorescence imaging on a silver nanoparticle sheet. PLoS One 2017; 12:e0189708. [PMID: 29244869 PMCID: PMC5731743 DOI: 10.1371/journal.pone.0189708] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/30/2017] [Indexed: 11/19/2022] Open
Abstract
This paper reports our original technique for visualizing cell-attached nanointerfaces with extremely high axial resolution using homogeneously excited localized surface plasmon resonance (LSPR) on self-assembled silver nanoparticle sheets. The LSPR sheet can confine and enhance the fluorescence at the nanointerface, which provides high signal-to-noise ratio images of focal adhesion at the cell-attached interface. The advantage of this LSPR-assisted technique is its usability, which provides comparable or higher-quality nanointerfacial images than TIRF microscopy, even under epifluorescence microscopy. We also report the cytotoxicity of silver nanoparticles, as determined via morphological analysis of adherent cells on the sheet.
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Affiliation(s)
- Eiji Usukura
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
- Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Yuhki Yanase
- Graduate School of Biomedical & Health Science, Hiroshima University, Hiroshima, Japan
| | - Ayumi Ishijima
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Thasaneeya Kuboki
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Satoru Kidoaki
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Koichi Okamoto
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Kaoru Tamada
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
- * E-mail:
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13
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Manipulating Living Cells to Construct a 3D Single-Cell Assembly without an Artificial Scaffold. Polymers (Basel) 2017; 9:polym9080319. [PMID: 30970994 PMCID: PMC6418816 DOI: 10.3390/polym9080319] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/24/2017] [Accepted: 07/25/2017] [Indexed: 12/23/2022] Open
Abstract
Artificial scaffolds such as synthetic gels or chemically-modified glass surfaces that have often been used to achieve cell adhesion are xenobiotic and may harm cells. To enhance the value of cell studies in the fields of regenerative medicine and tissue engineering, it is becoming increasingly important to create a cell-friendly technique to promote cell–cell contact. In the present study, we developed a novel method for constructing stable cellular assemblies by using optical tweezers in a solution of a natural hydrophilic polymer, dextran. In this method, a target cell is transferred to another target cell to make cell–cell contact by optical tweezers in a culture medium containing dextran. When originally non-cohesive cells are held in contact with each other for a few minutes under laser trapping, stable cell–cell adhesion is accomplished. This method for creating cellular assemblies in the presence of a natural hydrophilic polymer may serve as a novel next-generation 3D single-cell assembly system with future applications in the growing field of regenerative medicine.
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