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Blázquez-Castro A, Fernández-Piqueras J, Santos J. Genetic Material Manipulation and Modification by Optical Trapping and Nanosurgery-A Perspective. Front Bioeng Biotechnol 2020; 8:580937. [PMID: 33072730 PMCID: PMC7530750 DOI: 10.3389/fbioe.2020.580937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/01/2020] [Indexed: 11/13/2022] Open
Abstract
Light can be employed as a tool to alter and manipulate matter in many ways. An example has been the implementation of optical trapping, the so called optical tweezers, in which light can hold and move small objects with 3D control. Of interest for the Life Sciences and Biotechnology is the fact that biological objects in the size range from tens of nanometers to hundreds of microns can be precisely manipulated through this technology. In particular, it has been shown possible to optically trap and move genetic material (DNA and chromatin) using optical tweezers. Also, these biological entities can be severed, rearranged and reconstructed by the combined use of laser scissors and optical tweezers. In this review, the background, current state and future possibilities of optical tweezers and laser scissors to manipulate, rearrange and alter genetic material (DNA, chromatin and chromosomes) will be presented. Sources of undesirable effects by the optical procedure and measures to avoid them will be discussed. In addition, first tentative approaches at cellular-level genetic and organelle surgery, in which genetic material or DNA-carrying organelles are extracted out or introduced into cells, will be presented.
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Affiliation(s)
- Alfonso Blázquez-Castro
- Department of Biology, Faculty of Sciences, Autonomous University of Madrid, Madrid, Spain.,Genome Dynamics and Function Program, Genome Decoding Unit, Severo Ochoa Molecular Biology Center (CBMSO), CSIC-Autonomous University of Madrid, Madrid, Spain
| | - José Fernández-Piqueras
- Department of Biology, Faculty of Sciences, Autonomous University of Madrid, Madrid, Spain.,Genome Dynamics and Function Program, Genome Decoding Unit, Severo Ochoa Molecular Biology Center (CBMSO), CSIC-Autonomous University of Madrid, Madrid, Spain.,Institute of Health Research Jiménez Diaz Foundation, Madrid, Spain.,Consortium for Biomedical Research in Rare Diseases (CIBERER), Carlos III Institute of Health, Madrid, Spain
| | - Javier Santos
- Department of Biology, Faculty of Sciences, Autonomous University of Madrid, Madrid, Spain.,Genome Dynamics and Function Program, Genome Decoding Unit, Severo Ochoa Molecular Biology Center (CBMSO), CSIC-Autonomous University of Madrid, Madrid, Spain.,Institute of Health Research Jiménez Diaz Foundation, Madrid, Spain.,Consortium for Biomedical Research in Rare Diseases (CIBERER), Carlos III Institute of Health, Madrid, Spain
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2
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Eversole D, Subramanian K, Harrison RK, Bourgeois F, Yuksel A, Ben-Yakar A. Femtosecond Plasmonic Laser Nanosurgery (fs-PLN) mediated by molecularly targeted gold nanospheres at ultra-low pulse fluences. Sci Rep 2020; 10:12387. [PMID: 32709944 PMCID: PMC7382507 DOI: 10.1038/s41598-020-68512-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 06/25/2020] [Indexed: 12/16/2022] Open
Abstract
Plasmonic Laser Nanosurgery (PLN) is a novel photomodification technique that exploits the near-field enhancement of femtosecond (fs) laser pulses in the vicinity of gold nanoparticles. While prior studies have shown the advantages of fs-PLN to modify cells, further reduction in the pulse fluence needed to initiate photomodification is crucial to facilitate deep–tissue treatments. This work presents an in-depth study of fs-PLN at ultra-low pulse fluences using 47 nm gold nanoparticles, conjugated to antibodies that target the epithelial growth factor receptor and excited off-resonance using 760 nm, 270 fs laser pulses at 80 MHz repetition rate. We find that fs-PLN can optoporate cellular membranes with pulse fluences as low as 1.3 mJ/cm2, up to two orders of magnitude lower than those used at lower repetition rates. Our results, corroborated by simulations of free-electron generation by particle photoemission and photoionization of the surrounding water, shed light on the off-resonance fs-PLN mechanism. We suggest that photo-chemical pathways likely drive cellular optoporation and cell damage at these off-resonance, low fluence, and high repetition rate fs-laser pulses, with clusters acting as local concentrators of ROS generation. We believe that the low fluence and highly localized ROS-mediated fs-PLN approach will enable targeted therapeutics and cancer treatment.
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Affiliation(s)
- Daniel Eversole
- Biomedical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA
| | - Kaushik Subramanian
- Mechanical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA
| | - Rick K Harrison
- Mechanical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA
| | - Frederic Bourgeois
- Mechanical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA
| | - Anil Yuksel
- Mechanical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA
| | - Adela Ben-Yakar
- Biomedical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA. .,Mechanical Engineering, The University of Texas At Austin, Austin, TX, 78712, USA.
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3
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Saveleva MS, Lengert EV, Gorin DA, Parakhonskiy BV, Skirtach AG. Polymeric and Lipid Membranes-From Spheres to Flat Membranes and vice versa. MEMBRANES 2017; 7:E44. [PMID: 28809796 PMCID: PMC5618129 DOI: 10.3390/membranes7030044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 07/24/2017] [Accepted: 08/10/2017] [Indexed: 01/20/2023]
Abstract
Membranes are important components in a number of systems, where separation and control of the flow of molecules is desirable. Controllable membranes represent an even more coveted and desirable entity and their development is considered to be the next step of development. Typically, membranes are considered on flat surfaces, but spherical capsules possess a perfect "infinite" or fully suspended membranes. Similarities and transitions between spherical and flat membranes are discussed, while applications of membranes are also emphasized.
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Affiliation(s)
- Mariia S Saveleva
- Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
- Educational Research Institute of Nanostructures and Biosystems, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia.
| | - Ekaterina V Lengert
- Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
- Educational Research Institute of Nanostructures and Biosystems, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia.
| | - Dmitry A Gorin
- Educational Research Institute of Nanostructures and Biosystems, Saratov State University, Astrakhanskaya 83, 410012 Saratov, Russia.
| | - Bogdan V Parakhonskiy
- Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Andre G Skirtach
- Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
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4
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Dagallier A, Boulais E, Boutopoulos C, Lachaine R, Meunier M. Multiscale modeling of plasmonic enhanced energy transfer and cavitation around laser-excited nanoparticles. NANOSCALE 2017; 9:3023-3032. [PMID: 28182187 DOI: 10.1039/c6nr08773f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nanoscale bubbles generated around laser-excited metallic nanoparticles are promising candidates for targeted drug and gene delivery in living cells. The development of new nanomaterials for efficient nanobubble-based therapy is however limited by the lack of reliable computational approaches for the prediction of their size and dynamics, due to the wide range of time and space scales involved. In this work, we present a multiscale modeling framework that segregates the various channels of plasmon de-excitation and energy transfer to describe the generation and dynamics of plasmonic nanobubbles. Detailed comparison with time-resolved shadowgraph imaging and spectroscopy data demonstrates that the bubble size, dynamics, and formation threshold can be quantitatively predicted for various types of nanostructures and irradiation parameters, with an error smaller than the experimental uncertainty. Our model in addition provides crucial physical insights into non-linear interactions in the near-field that should guide the experimental design of nanoplasmonic materials for nanobubble-based applications in nanomedicine.
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Affiliation(s)
- Adrien Dagallier
- Laser Processing and Plasmonics Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montreal, Quebec H3C 3A7, Canada.
| | - Etienne Boulais
- Laser Processing and Plasmonics Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montreal, Quebec H3C 3A7, Canada. and Laboratory of Biosensors and Nanomachines, Department of Chemistry, Montreal, Quebec H3T 1J4, Canada
| | - Christos Boutopoulos
- Laser Processing and Plasmonics Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montreal, Quebec H3C 3A7, Canada. and SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK
| | - Rémi Lachaine
- Laser Processing and Plasmonics Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montreal, Quebec H3C 3A7, Canada.
| | - Michel Meunier
- Laser Processing and Plasmonics Laboratory, Department of Engineering Physics, Polytechnique Montréal, Montreal, Quebec H3C 3A7, Canada.
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5
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Natesan H, Bischof JC. Multiscale Thermal Property Measurements for Biomedical Applications. ACS Biomater Sci Eng 2017; 3:2669-2691. [PMID: 33418696 DOI: 10.1021/acsbiomaterials.6b00565] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Bioheat transfer-based innovations in health care include applications such as focal treatments for cancer and cardiovascular disease and the preservation of tissues and organs for transplantation. In these applications, the ability to preserve or destroy a biomaterial is directly dependent on its temperature history. Thus, thermal measurement and modeling are necessary to either avoid or induce the injury required. In this review paper, we will first define and discuss thermal conductivity and calorimetric measurements of biomaterials in the cryogenic (<-40 °C), subzero (<0 °C), hypothermic (<37 °C), and hyperthermic (>37 °C) regimes. For thermal conductivity measurements, we review the use of 3ω and laser flash techniques for measurement of thermal conductivity in thin (1 μm-2 mm thick), anisotropic, and/or multilayered tissues. At the nanoscale, we review the use of pump-probe and scanning probe methods to measure thermal conductivity at short temporal scales (10 ps-100 ns) and spatial scales (1 nm-1 μm), particularly in the coating and surrounding medium around metallic nanoparticles (1 nm-20 nm). For calorimetric techniques, we review differential scanning calorimetry (DSC), which is intrinsically at the microscale (e.g., tissue pieces or millions of cells in media). DSC is used with large sample mass (∼3-100 mg) over wide temperature ranges (-180 to 750 °C) with low-temperature scanning rates (<750 °C/min). The need to assess smaller samples at higher rates has led to the development of nanocalorimetry on a silicon based membrane. Here the sample weight is as low as 10 ng, thereby allowing ultra-rapid heating rates (∼1 × 107 C/min). Finally, we discuss various opportunities that are driving the need for new micro- and nanoscale thermal measurements.
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Affiliation(s)
- Harishankar Natesan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - John C Bischof
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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6
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Lachaine R, Boutopoulos C, Lajoie PY, Boulais É, Meunier M. Rational Design of Plasmonic Nanoparticles for Enhanced Cavitation and Cell Perforation. NANO LETTERS 2016; 16:3187-94. [PMID: 27048763 DOI: 10.1021/acs.nanolett.6b00562] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Metallic nanoparticles are routinely used as nanoscale antenna capable of absorbing and converting photon energy with subwavelength resolution. Many applications, notably in nanomedicine and nanobiotechnology, benefit from the enhanced optical properties of these materials, which can be exploited to image, damage, or destroy targeted cells and subcellular structures with unprecedented precision. Modern inorganic chemistry enables the synthesis of a large library of nanoparticles with an increasing variety of shapes, composition, and optical characteristic. However, identifying and tailoring nanoparticles morphology to specific applications remains challenging and limits the development of efficient nanoplasmonic technologies. In this work, we report a strategy for the rational design of gold plasmonic nanoshells (AuNS) for the efficient ultrafast laser-based nanoscale bubble generation and cell membrane perforation, which constitute one of the most crucial challenges toward the development of effective gene therapy treatments. We design an in silico rational design framework that we use to tune AuNS morphology to simultaneously optimize for the reduction of the cavitation threshold while preserving the particle structural integrity. Our optimization procedure yields optimal AuNS that are slightly detuned compared to their plasmonic resonance conditions with an optical breakdown threshold 30% lower than randomly selected AuNS and 13% lower compared to similarly optimized gold nanoparticles (AuNP). This design strategy is validated using time-resolved bubble spectroscopy, shadowgraphy imaging and electron microscopy that confirm the particle structural integrity and a reduction of 51% of the cavitation threshold relative to optimal AuNP. Rationally designed AuNS are finally used to perforate cancer cells with an efficiency of 61%, using 33% less energy compared to AuNP, which demonstrate that our rational design framework is readily transferable to a cell environment. The methodology developed here thus provides a general strategy for the systematic design of nanoparticles for nanomedical applications and should be broadly applicable to bioimaging and cell nanosurgery.
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Affiliation(s)
- Rémi Lachaine
- Laser Processing and Plasmonics Laboratory, Engineering Physics Department, École Polytechnique de Montréal , Montréal, Québec H3C 3A7, Canada
| | - Christos Boutopoulos
- Laser Processing and Plasmonics Laboratory, Engineering Physics Department, École Polytechnique de Montréal , Montréal, Québec H3C 3A7, Canada
- School of Physics and Astronomy, SUPA, University of St. Andrews , North Haugh, St. Andrews, KY16 9SS, United Kingdom
| | - Pierre-Yves Lajoie
- Laser Processing and Plasmonics Laboratory, Engineering Physics Department, École Polytechnique de Montréal , Montréal, Québec H3C 3A7, Canada
| | - Étienne Boulais
- Laser Processing and Plasmonics Laboratory, Engineering Physics Department, École Polytechnique de Montréal , Montréal, Québec H3C 3A7, Canada
- Department of Chemistry, Université de Montréal , Montréal, Québec H3C 3J7, Canada
| | - Michel Meunier
- Laser Processing and Plasmonics Laboratory, Engineering Physics Department, École Polytechnique de Montréal , Montréal, Québec H3C 3A7, Canada
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7
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Abstract
Optimized structures of (A) Ge18H12; (B) Ge19H12, peripheral germanium atoms (GeP), middle-layer germanium atoms (GeM) and the central germanium atom (GeC).
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Affiliation(s)
- Hadi Behzadi
- Department of Physical Chemistry
- Faculty of Chemistry
- Kharazmi University
- Tehran
- Iran
| | - Zahra khalilnia
- Department of Physical Chemistry
- Faculty of Chemistry
- Kharazmi University
- Tehran
- Iran
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8
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Thiele M, Knauer A, Csáki A, Mallsch D, Henkel T, Köhler JM, Fritzsche W. High-Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201400524] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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9
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Manzetti S, Lu T, Behzadi H, Estrafili MD, Thi Le HL, Vach H. Intriguing properties of unusual silicon nanocrystals. RSC Adv 2015. [DOI: 10.1039/c5ra17148b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Optimized structures of A: empty Si18H12Si; B: Si19H12, the 19th Si atom situated in the center of the lattice structure, C: Si18GeH12, Ge atom situated in the center of the lattice structure.
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Affiliation(s)
- Sergio Manzetti
- Fjordforsk A.S. Institute for Science and Technology
- High-performance Computational Unit. Midtun
- Vangsnes 6894
- Norway
- Uppsala Center for Computational Chemistry
| | - Tian Lu
- Beijing Kein Research Center for Natural Sciences
- People's Republic of China
| | - Hadi Behzadi
- Department of Physical Chemistry
- Faculty of Chemistry
- Kharazmi University
- Tehran
- Iran
| | - Mehdi D. Estrafili
- Laboratory of Theoretical Chemistry
- Department of Chemistry
- University of Maragheh
- Maragheh
- Iran
| | | | - Holger Vach
- CNRS – LPICM
- Ecole Polytechnique
- 91128 Palaiseau
- France
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10
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Csáki A, Thiele M, Jatschka J, Dathe A, Zopf D, Stranik O, Fritzsche W. Plasmonic nanoparticle synthesis and bioconjugation for bioanalytical sensing. Eng Life Sci 2014. [DOI: 10.1002/elsc.201400075] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Andrea Csáki
- Leibniz Institute of Photonic Technology; Jena Germany
| | | | | | - André Dathe
- Leibniz Institute of Photonic Technology; Jena Germany
| | - David Zopf
- Leibniz Institute of Photonic Technology; Jena Germany
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11
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Plasmonic and Thermooptical Properties of Spherical Metallic Nanoparticles for Their Thermoplasmonic and Photonic Applications. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/893459] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Investigations and use of nanoparticles (NPs) as photothermal (PT) agents in laser and optical nanotechnology are fast growing areas of research and applications. The potential benefits of NPs applications include possibility for thermal imaging and treatment of materials containing of NPs, applications of NPs for light-to-thermal energy conversion, in catalysis, laser nanomedicine, and chemistry. Efficiency of applications of metallic NPs for laser and optical nanotechnology depends on plasmonic and thermophysical properties of NPs, characteristics of radiation, and surrounding medium. Here we present the results of comparative analysis of NP properties (plasmonic, thermooptical, and others) allowing selecting their parameters for thermoplasmonic and photonic applications. Plasmonic and thermooptical properties of several metallic (aurum, silver, platinum, cobalt, zinc, nickel, titanium, cuprum, aluminum, molybdenum, vanadium, and palladium) NPs are theoretically investigated and analysis of them is carried out. Investigation of the influence of NPs parameters (type of metal, radii, optical indexes, density, and heat capacity of NP material), characteristics of radiation (wavelength and pulse duration), and ambient parameters on plasmonic and thermophysical properties of NPs has been carried out. It was established that maximum value of thermooptical parameter (maximum NP temperature) can be achieved with the use of absorption efficiency factor of NP smaller than its maximum value.
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12
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Palankar R, Pinchasik BE, Khlebtsov BN, Kolesnikova TA, Möhwald H, Winterhalter M, Skirtach AG. Nanoplasmonically-induced defects in lipid membrane monitored by ion current: transient nanopores versus membrane rupture. NANO LETTERS 2014; 14:4273-4279. [PMID: 24961609 DOI: 10.1021/nl500907k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have developed a nanoplasmonic-based approach to induce nanometer-sized local defects in the phospholipid membranes. Here, gold nanorods and nanoparticles having plasmon resonances in the near-infrared (NIR) spectral range are used as optical absorption centers in the lipid membrane. Defects optically induced by NIR-laser irradiation of gold nanoparticles are continuously monitored by high-precision ion conductance measurement. Localized laser-mediated heating of nanorods and nanoparticle aggregates cause either (a) transient nanopores in lipid membranes or (b) irreversible rupture of the membrane. To monitor transient opening and closing, an electrophysiological setup is assembled wherein a giant liposome is spread over a micrometer hole in a glass slide forming a single bilayer of high Ohmic resistance (so-called gigaseal), while laser light is coupled in and focused on the membrane. The energy associated with the localized heating is discussed and compared with typical elastic parameters in the lipid membranes. The method presented here provides a novel methodology for better understanding of transport across artificial or natural biological membranes.
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Affiliation(s)
- Raghavendra Palankar
- ZIK HIKE, Nanostructure Group, Ernst-Moritz-Arndt-Universität Greifswald , 17489 Greifswald, Germany
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13
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Wirth J, Garwe F, Meyer R, Csáki A, Stranik O, Fritzsche W. Plasmonically enhanced electron escape from gold nanoparticles and their polarization-dependent excitation transfer along DNA nanowires. NANO LETTERS 2014; 14:3809-3816. [PMID: 24884536 DOI: 10.1021/nl5009184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here we show plasmon mediated excitation transfer along DNA nanowires over up to one micrometer. Apparently, an electron excitation is initiated by a femtosecond laser pulse that illuminates gold nanoparticles (AuNP) on double stranded DNA (dsDNA). The dependency of this excitation on laser wavelength and polarization are investigated. Excitation of the plasmon resonance of the AuNPs via one- and two-photon absorption at 520 and 1030 nm, respectively, was explored. We demonstrate an excitation transfer along dsDNA molecules at plasmon supported four-photon excitation of AuNP cluster or at laser field driven nanoparticle electron tunneling for an alignment of the attached dsDNA to the polarization of the electric field of the laser light. These results extend the previously observed plasmonically induced three-photon excitation transfer along DNA nanowires to another nanoparticle material (gold) and the adapted irradiation wavelengths.
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Affiliation(s)
- J Wirth
- Leibniz Institute of Photonic Technology , Jena 07745, Germany
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14
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Theil F, Dellith A, Dellith J, Undisz A, Csáki A, Fritzsche W, Popp J, Rettenmayr M, Dietzek B. Ru dye functionalized Au–SiO2@TiO2 and Au/Pt–SiO2@TiO2 nanoassemblies for surface-plasmon-induced visible light photocatalysis. J Colloid Interface Sci 2014; 421:114-21. [DOI: 10.1016/j.jcis.2014.01.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/21/2014] [Accepted: 01/23/2014] [Indexed: 10/25/2022]
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15
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Chen H, Zou H, Paholak HJ, Ito M, Qian W, Che Y, Sun D. Thiol-reactive amphiphilic block copolymer for coating gold nanoparticles with neutral and functionable surfaces. Polym Chem 2014; 5:2768-2773. [PMID: 24729795 PMCID: PMC3979584 DOI: 10.1039/c3py01652h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nanoparticles designed for biomedical applications are often coated with polymers containing reactive functional groups, such as -COOH and -NH2, to conjugate targeting ligands or drugs. However, introducing highly charged surfaces promotes binding of the nanoparticles to biomolecules in biological systems through ionic interactions, causing the nanoparticles to aggregate in biological environments and consequently undergo strong non-specific binding to off-target cells and tissues. Developing a unique polymer with neutral surfaces that can be further functionalized directly would be critical to develop suitable nanomaterials for nanomedicine. Here, we report a thiol-reactive amphiphilic block copolymer poly(ethylene oxide)-block-poly(pyridyldisulfide ethylmeth acrylate) (PEO-b-PPDSM) for coating gold nanoparticles (AuNPs). The resultant polymer-coated AuNPs have almost neutral surfaces with slightly negative zeta potentials from -10 to 0 mV over a wide pH range from 2 to 12. Although the zeta potential is close to zero we show that the PEO-b-PPDSM copolymer-coated AuNPs have both good stability in various physiological conditions and reduced non-specific adsorption of proteins/biomolecules. Because of the multiple pyridyldisulfide groups on the PPDSM block, these individually dispersed nanocomplexes with an overall hydrodynamic size around 43.8 nm can be directly functionalized via disulfide-thiol exchange chemistry.
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Affiliation(s)
- Hongwei Chen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109
| | - Hao Zou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109
- Department of Pharmaceutical Sciences, College of Pharmacy, Second Military Medical University, 325 Guo He Road, Shanghai 200433, PR China
| | - Hayley J. Paholak
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109
| | - Masayuki Ito
- IMRA America, Inc. 1044 Woodridge Avenue, Ann Arbor, Michigan 48105
| | - Wei Qian
- IMRA America, Inc. 1044 Woodridge Avenue, Ann Arbor, Michigan 48105
| | - Yong Che
- IMRA America, Inc. 1044 Woodridge Avenue, Ann Arbor, Michigan 48105
| | - Duxin Sun
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109
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16
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Steinbrück A, Choi JW, Fasold S, Menzel C, Sergeyev A, Pertsch T, Grange R. Plasmonic heating with near infrared resonance nanodot arrays for multiplexing optofluidic applications. RSC Adv 2014. [DOI: 10.1039/c4ra13312a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, we show local laser-induced heating in fluids with gold nanodot arrays prepared by electron-beam lithography that cover resonances in the near infrared spectral range from 750 nm to 880 nm.
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Affiliation(s)
- A. Steinbrück
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
| | - J.-W. Choi
- Swiss Federal Institute of Technology Lausanne (EPFL) Optics Laboratory
- School of Engineering
- CH-1015 Lausanne, Switzerland
| | - S. Fasold
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
| | - C. Menzel
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
| | - A. Sergeyev
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
| | - T. Pertsch
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
| | - R. Grange
- Friedrich-Schiller-Universität Jena
- Institute of Applied Physics
- Abbe Center of Photonics
- 07745 Jena, Germany
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17
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Boulais E, Lachaine R, Hatef A, Meunier M. Plasmonics for pulsed-laser cell nanosurgery: Fundamentals and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2013. [DOI: 10.1016/j.jphotochemrev.2013.06.001] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Toppari JJ, Wirth J, Garwe F, Stranik O, Csaki A, Bergmann J, Paa W, Fritzsche W. Plasmonic coupling and long-range transfer of an excitation along a DNA nanowire. ACS NANO 2013; 7:1291-1298. [PMID: 23305550 DOI: 10.1021/nn304789w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate an excitation transfer along a fluorescently labeled dsDNA nanowire over a length of several micrometers. Launching of the excitation is done by exciting a localized surface plasmon mode of a 40 nm silver nanoparticle by 800 nm femtosecond laser pulses via two-photon absorption. The plasmonic mode is subsequently coupled or transformed to excitation in the nanowire in contact with the particle and propagated along it, inducing bleaching of the dyes on its way. In situ as well as ex situ fluorescence microscopy is utilized to observe the phenomenon. In addition, transfer of the excitation along the nanowire to another nanoparticle over a separation of 5.7 μm was clearly observed. The nature of the excitation coupling and transfer could not be fully resolved here, but injection of an electron into the DNA from the excited nanoparticle and subsequent coupled transfer of charge (Dexter) and delocalized exciton (Frenkel) is the most probable mechanism. However, a direct plasmonic or optical coupling and energy transfer along the nanowire cannot be totally ruled out either. By further studies the observed phenomenon could be utilized in novel molecular systems, providing a long-needed communication method between molecular devices.
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Affiliation(s)
- J Jussi Toppari
- Institute of Photonic Technology, Albert-Einstein-Strasse 9, Jena 07745, Germany
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19
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Spence GT, Hartland GV, Smith BD. Activated photothermal heating using croconaine dyes. Chem Sci 2013. [DOI: 10.1039/c3sc51978c] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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20
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Uchugonova A, Lessel M, Nietzsche S, Zeitz C, Jacobs K, Lemke C, König K. Nanosurgery of cells and chromosomes using near-infrared twelve-femtosecond laser pulses. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:101502. [PMID: 23223978 DOI: 10.1117/1.jbo.17.10.101502] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
ABSTRACT. Laser-assisted surgery based on multiphoton absorption of near-infrared laser light has great potential for high precision surgery at various depths within the cells and tissues. Clinical applications include refractive surgery (fs-LASIK). The non-contact laser method also supports contamination-free cell nanosurgery. In this paper we describe usage of an ultrashort femtosecond laser scanning microscope for sub-100 nm surgery of human cells and metaphase chromosomes. A mode-locked 85 MHz Ti:Sapphire laser with an M-shaped ultrabroad band spectrum (maxima: 770 nm/830 nm) and an in situ pulse duration at the target ranging from 12 fs up to 3 ps was employed. The effects of laser nanoprocessing in cells and chromosomes have been quantified by atomic force microscopy. These studies demonstrate the potential of extreme ultrashort femtosecond laser pulses at low mean milliwatt powers for sub-100 nm surgery of cells and cellular organelles.
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Affiliation(s)
- Aisada Uchugonova
- Department of Biophotonics and Laser Technology, Saarland University, Campus A51, 66123 Saarbruecken, Germany.
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21
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Qin Z, Bischof JC. Thermophysical and biological responses of gold nanoparticle laser heating. Chem Soc Rev 2012; 41:1191-217. [DOI: 10.1039/c1cs15184c] [Citation(s) in RCA: 433] [Impact Index Per Article: 36.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Hyperthermia Using Inorganic Nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-12-415769-9.00013-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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Steinbrück A, Csaki A, Fritzsche W. Metal Nanoparticles for Molecular Plasmonics. REVIEWS IN PLASMONICS 2012. [DOI: 10.1007/978-1-4614-0884-0_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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24
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Vach H. Ultrastable silicon nanocrystals due to electron delocalization. NANO LETTERS 2011; 11:5477-5481. [PMID: 22032734 DOI: 10.1021/nl203275n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a new nanocrystalline form of silicon that gives birth to pure hydrogenated silicon nanocrystals that absorb light in the ultraviolet, visible, and infrared spectral region despite their small size of only 1 nm and without the need for expensive or toxic metal atoms. On the basis of first-principles calculations, we demonstrate that those pure, but overcoordinated silicon nanocrystals are more stable than any other known silicon nanocrystals due to electron delocalization and that they form spontaneously via self-assembly. Therefore, we predict their immediate application in fields ranging from photovoltaic and light-emitting devices to photothermal cancer treatment.
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Affiliation(s)
- Holger Vach
- CNRS-LPICM, Ecole Polytechnique, 91128 Palaiseau, France.
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25
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Csaki A, Schneider T, Wirth J, Jahr N, Steinbrück A, Stranik O, Garwe F, Müller R, Fritzsche W. Molecular plasmonics: light meets molecules at the nanoscale. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2011; 369:3483-3496. [PMID: 21807723 DOI: 10.1098/rsta.2011.0145] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Certain metal nanoparticles exhibit the effect of localized surface plasmon resonance when interacting with light, based on collective oscillations of their conduction electrons. The interaction of this effect with molecules is of great interest for a variety of research disciplines, both in optics and in the life sciences. This paper attempts to describe and structure this emerging field of molecular plasmonics, situated between the molecular world and plasmonic effects in metal nanostructures, and demonstrates the potential of these developments for a variety of applications.
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Affiliation(s)
- Andrea Csaki
- Nano Biophotonics Department, Institute of Photonic Technology (IPHT), PO Box 100239, 07702 Jena, Germany
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26
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Dutz S, Kettering M, Hilger I, Müller R, Zeisberger M. Magnetic multicore nanoparticles for hyperthermia--influence of particle immobilization in tumour tissue on magnetic properties. NANOTECHNOLOGY 2011; 22:265102. [PMID: 21576784 DOI: 10.1088/0957-4484/22/26/265102] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
When using magnetic nanoparticles as a heating source for magnetic particle hyperthermia it is of particular interest to know if the particles are free to move in the interstitial fluid or are fixed to the tumour tissue. The immobilization state determines the relaxation behaviour of the administered particles and thus their specific heating power. To investigate this behaviour, magnetic multicore nanoparticles were injected into experimentally grown tumours in mice and magnetic heating treatment was carried out in an alternating magnetic field (H = 25 kA m(-1), f = 400 kHz). The tested particles were well suited for magnetic heating treatment as they heated a tumour of about 100 mg by about 22 K within the first 60 s. Upon sacrifice, histological tumour examination showed that the particles form spots in the tissue with a mainly homogeneous particle distribution in these spots. The magnetic ex vivo characterization of the removed tumour tissue gave clear evidence for the immobilization of the particles in the tumour tissue because the particles in the tumour showed the same magnetic behaviour as immobilized particles. Therefore, the particles are not able to rotate and a temperature increase due to Brown relaxation can be neglected. To accurately estimate the heating potential of magnetic materials, the respective environments influencing the nanoparticle mobility status have to be taken into account.
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Affiliation(s)
- Silvio Dutz
- Department of Nano Biophotonics, Institute of Photonic Technology, Jena, Germany.
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27
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Buchkremer A, Linn MJ, Reismann M, Eckert T, Witten KG, Richtering W, von Plessen G, Simon U. Stepwise thermal and photothermal dissociation of a hierarchical superaggregate of DNA-functionalized gold nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1397-1402. [PMID: 21495186 DOI: 10.1002/smll.201002324] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Anne Buchkremer
- Institute of Inorganic Chemistry, RWTH Aachen University, and JARA-Future Information Technology, Landoltweg 1, Aachen, Germany
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28
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Wirth J, Garwe F, Hähnel G, Csáki A, Jahr N, Stranik O, Paa W, Fritzsche W. Plasmonic nanofabrication by long-range excitation transfer via DNA nanowire. NANO LETTERS 2011; 11:1505-1511. [PMID: 21443247 DOI: 10.1021/nl104269x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Driven by the demand for ongoing integration and increased complexity of today's microelectronic circuits, smaller and smaller structures need to be fabricated with a high throughput. In contrast to serial nanofabrication techniques, based, e.g., on electron beam or scanning probe methods, optical methods allow a parallel approach and thus a high throughput. However, they rarely reach the desired resolution. One example is plasmon lithography, which is limited by the utilized plasmonic metal structures. Here we show a new approach extending plasmonic lithography with the potential for a highly parallel nanofabrication with a higher level of complexity based on nanoantenna effects combined with molecular nanowires. Thereby femtosecond laser pulse light is converted by Ag nanoparticles into a high plasmonic excitation guided along attached DNA structures. An underlying poly(methyl methacrylate) (PMMA) layer acting as an electron-sensitive resist is so structured along the former DNA position. This apparently DNA-guided effect leads to nanometer grooves reaching even micrometers away from the excited nanoparticle, representing a novel effect of long-range excitation transfer along DNA nanowires.
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Affiliation(s)
- J Wirth
- Institute of Photonic Technology, Jena 07745, Germany
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29
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Abstract
Clinical neurology and neurosurgery are two fields that face some of the most challenging and exciting problems remaining in medicine. Brain tumors, paralysis after trauma or stroke, and neurodegerative diseases are some of the many disorders for which effective therapies remain elusive. Nanotechnology seems poised to offer promising new solutions to some of these difficult problems. The latest advances in materials engineered at the nanoscale for applications relevant to the clinical neurosciences, such as medical imaging, nanotherapies for neurologic disease, nerve tissue engineering, and nanotechnological contributions to neuroelectrodes and brain-machine interface technology are reviewed. The primary classes of materials discussed include superparamagnetic iron oxide nanoparticles, gold nanoparticles, liposomes, carbon fullerenes, and carbon nanotubes. The potential of the field and the challenges that must be overcome for the current technology to become available clinically are highlighted.
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Affiliation(s)
- Kelly L. Collins
- University of Michigan Medical Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0338
| | - Daniel A. Orringer
- University of Michigan Medical Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0338
| | - Parag G. Patil
- University of Michigan Medical Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0338
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30
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Abstract
Femtosecond laser ablation permits non-invasive surgeries in the bulk of a sample with submicrometer resolution. We briefly review the history of optical surgery techniques and the experimental background of femtosecond laser ablation. Next, we present several clinical applications, including dental surgery and eye surgery. We then summarize research applications, encompassing cell and tissue studies, research on C. elegans, and studies in zebrafish. We conclude by discussing future trends of femtosecond laser systems and some possible application directions.
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Affiliation(s)
- Samuel H Chung
- School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, MA 02138, USA.
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31
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Maye MM, Nykypanchuk D, Cuisinier M, van der Lelie D, Gang O. Stepwise surface encoding for high-throughput assembly of nanoclusters. NATURE MATERIALS 2009; 8:388-391. [PMID: 19329992 DOI: 10.1038/nmat2421] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Accepted: 02/24/2009] [Indexed: 05/27/2023]
Abstract
Self-assembly offers a promising method to organize functional nanoscale objects into two-dimensional (2D) and 3D superstructures for exploiting their collective effects. On the other hand, many unique phenomena emerge after arranging a few nanoscale objects into clusters, the so-called artificial molecules. The strategy of using biomolecular linkers between nanoparticles has proven especially useful for construction of such nanoclusters. However, conventional solution-based reactions typically yield a broad population of multimers or isomers of clusters; furthermore, the efficiency of fabrication is often limited. Here, we describe a novel high-throughput method for designing and fabricating clusters using DNA-encoded nanoparticles assembled on a solid support in a stepwise manner. This method efficiently imparts particles with anisotropy during their assembly and disassembly at a surface, generating remarkably high yields of well-defined dimer clusters and Janus (two-faced) nanoparticles. The method is scalable and modular, assuring large quantities of clusters of designated sizes and compositions.
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Affiliation(s)
- Mathew M Maye
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
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32
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Salmaso S, Caliceti P, Amendola V, Meneghetti M, Magnusson JP, Pasparakis G, Alexander C. Cell up-take control of gold nanoparticles functionalized with a thermoresponsive polymer. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b816603j] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Uchugonova A, König K, Bueckle R, Isemann A, Tempea G. Targeted transfection of stem cells with sub-20 femtosecond laser pulses. OPTICS EXPRESS 2008; 16:9357-64. [PMID: 18575499 DOI: 10.1364/oe.16.009357] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Multiphoton microscopes have become important tools for non-contact sub-wavelength three-dimensional nanoprocessing of living biological specimens based on multiphoton ionization and plasma formation. Ultrashort laser pulses are required, however, dispersive effects limit the shortest pulse duration achievable at the focal plane. We report on a compact nonlinear laser scanning microscope with sub-20 femtosecond 75 MHz near infrared laser pulses for nanosurgery of human stem cells and two-photon high-resolution imaging. Single point illumination of the cell membrane was performed to induce a transient nanopore for the delivery of extracellular green fluorescent protein plasmids. Mean powers of less than 7 mW (<93 pJ) and low millisecond exposure times were found to be sufficient to transfect human pancreatic and salivary gland stem cells in these preliminary studies. Ultracompact sub-20 femtosecond laser microscopes may become optical tools for nanobiotechnology and nanomedicine including optical stem cell manipulation.
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Affiliation(s)
- Aisada Uchugonova
- Fraunhofer Institute for Biomedical Technology (IBMT), Ensheimer Strasse 48, D-66386 St. Ingbert, Germany
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34
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Elder JB, Hoh DJ, Oh BC, Heller AC, Liu CY, Apuzzo ML. THE FUTURE OF CEREBRAL SURGERY. Neurosurgery 2008; 62:1555-79; discussion 1579-82. [DOI: 10.1227/01.neu.0000333820.33143.0d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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35
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36
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Reismann M, Bretschneider JC, von Plessen G, Simon U. Reversible photothermal melting of DNA in DNA-gold-nanoparticle networks. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:607-10. [PMID: 18454511 DOI: 10.1002/smll.200701317] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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37
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Dienerowitz M, Mazilu M, Reece PJ, Krauss TF, Dholakia K. Optical vortex trap for resonant confinement of metal nanoparticles. OPTICS EXPRESS 2008; 16:4991-4999. [PMID: 18542599 DOI: 10.1364/oe.16.004991] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field possessing a helical phasefront that confines the nanoparticle to the vortex core (dark) region. We interpret our data with a theoretical framework based upon the Maxwell stress tensor formulation to elucidate the total forces upon nanometric particles near the particle plasmon resonance. Rotation of the particle due to orbital angular momentum transfer is observed. This geometry may have several advantages for advanced manipulation of metal nanoparticles.
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Affiliation(s)
- Maria Dienerowitz
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, KY169SS, United Kingdom.
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38
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Garwe F, Bauerschäfer U, Csaki A, Steinbrück A, Ritter K, Bochmann A, Bergmann J, Weise A, Akimov D, Maubach G, König K, Hüttmann G, Paa W, Popp J, Fritzsche W. Optically controlled thermal management on the nanometer length scale. NANOTECHNOLOGY 2008; 19:055207. [PMID: 21817605 DOI: 10.1088/0957-4484/19/05/055207] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The manipulation of polymers and biological molecules or the control of chemical reactions on a nanometer scale by means of laser pulses shows great promise for applications in modern nanotechnology, biotechnology, molecular medicine or chemistry. A controllable, parallel, highly efficient and very local heat conversion of the incident laser light into metal nanoparticles without ablation or fragmentation provides the means for a tool like a 'nanoreactor', a 'nanowelder', a 'nanocrystallizer' or a 'nanodesorber'. In this paper we explain theoretically and show experimentally the interaction of laser radiation with gold nanoparticles on a polymethylmethacrylate (PMMA) layer (one-photon excitation) by means of different laser pulse lengths, wavelengths and pulse repetition rates. To the best of our knowledge this is the first report showing the possibility of highly local (in a 40 nm range) regulated heat insertion into the nanoparticle and its surroundings without ablation of the gold nanoparticles. In an earlier paper we showed that near-infrared femtosecond irradiation can cut labeled DNA sequences in metaphase chromosomes below the diffraction-limited spot size. Now, we use gold as well as silver-enhanced gold nanoparticles on DNA (also within chromosomes) as energy coupling objects for femtosecond laser irradiation with single-and two-photon excitation. We show the results of highly localized destruction effects on DNA that occur only nearby the nanoparticles.
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Affiliation(s)
- F Garwe
- Institute of Photonic Technology (IPHT) Jena, PO Box 100239, D-07745 Jena, Germany
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39
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Elder JB, Liu CY, Apuzzo ML. NEUROSURGERY IN THE REALM OF 10−9, PART 2. Neurosurgery 2008; 62:269-84; discussion 284-5. [DOI: 10.1227/01.neu.0000315995.73269.c3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- James B. Elder
- Department of Neurological Surgery, University of Southern California, Keck School of Medicine, Los Angeles, California
| | - Charles Y. Liu
- Department of Neurological Surgery, University of Southern California, Keck School of Medicine, Los Angeles, California
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California
| | - Michael L.J. Apuzzo
- Department of Neurological Surgery, University of Southern California, Keck School of Medicine, Los Angeles, California
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40
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Becerril HA, Woolley AT. DNA shadow nanolithography. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2007; 3:1534-8. [PMID: 17705318 DOI: 10.1002/smll.200700240] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Affiliation(s)
- Héctor A Becerril
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
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41
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Peptide nanowires for coordination and signal transduction of peroxidase biosensors to carbon nanotube electrode arrays. Biosens Bioelectron 2007; 23:568-74. [PMID: 17881214 DOI: 10.1016/j.bios.2007.06.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Revised: 06/03/2007] [Accepted: 06/08/2007] [Indexed: 11/25/2022]
Abstract
A strategy of metallizing peptides to serve as conduits of electronic signals that bridge between a redox enzyme and a carbon-nanotube electrode has been developed with enhanced results. In conjunction, a protocol to link the biological elements to the tips of carbon nanotubes has been developed to optimize contact and geometry between the redox enzyme and the carbon nanotube electrode array. A peptide nanowire of 33 amino acids, comprised of a leucine zipper motif, was mutated to bind divalent metals, conferring conductivity into the peptide. Reaction between a thiolate of the peptide with the sulfenic acid of the NADH peroxidase enzyme formed a peptide-enzyme assembly that are fully primed to transduce electrons out of the enzyme active site to an electrode. Scanning electron microscopy shows immobilization and linking of the assembly specifically to the tips of carbon nanotube electrodes, as designed. Isothermal titration calorimetry and mass spectrometry indicate a binding stoichiometry of at least three metals bound per peptide strand. Overall, these results highlight the gain that can be achieved when the signal tranducing units of a biosensor are aligned through directed peptide chemistry.
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