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Rodríguez-Nieto M, Mendoza-Flores P, García-Ortiz D, Montes-de-Oca LM, Mendoza-Villa M, Barrón-González P, Espinosa G, Menchaca JL. Viscoelastic properties of doxorubicin-treated HT-29 cancer cells by atomic force microscopy: the fractional Zener model as an optimal viscoelastic model for cells. Biomech Model Mechanobiol 2019; 19:801-813. [PMID: 31784917 DOI: 10.1007/s10237-019-01248-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 10/28/2019] [Indexed: 12/11/2022]
Abstract
The malignancy of cancer cells and their response to drug treatments have been traditionally studied using solely their elastic properties. However, the study of the combined viscous and elastic properties provides a richer description of the mechanics of the cell, and achieves a more precise assessment of the effect exerted by anti-cancer treatments. We used an atomic force microscope to obtain the morphological, elastic and viscous properties of HT-29 colorectal cancer cells. Changes in these parameters were observed during exposure of the cells to doxorubicin at different times. The elastic properties were analyzed using the Hertz and Sneddon models. Furthermore, we analyzed the data to study the viscoelasticity of the cells comparing the models known as the standard linear solid, fractional Zener, generalized Maxwell, and power law. A discussion about the optimal model based in the accuracy and physical assumptions for this particular system is included. From the morphological data and viscoelasticity of HT-29 cells exposed to doxorubicin, we found that some parameters were affected differently at shorter or longer exposure times. For instance, the relaxation time suggests a measure of the cell to self-heal and it was observed to increase at shorter exposure times and then to reduce for longer exposure times to the drug. The fractional Zener model better described the mechanical properties of the cell due to the reduced number of parameters and the quality of the fit to experimental data.
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Affiliation(s)
- Maricela Rodríguez-Nieto
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, 58060, Morelia, Michoacán, Mexico
| | - Priscila Mendoza-Flores
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, 66455, Mexico
| | - David García-Ortiz
- Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Centro de Investigación en Ciencias Físico Matemáticas, San Nicolás de los Garza, Nuevo León, 66455, Mexico
| | - Luis M Montes-de-Oca
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, 58060, Morelia, Michoacán, Mexico
| | - Marco Mendoza-Villa
- Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Centro de Investigación en Ciencias Físico Matemáticas, San Nicolás de los Garza, Nuevo León, 66455, Mexico
| | - Porfiria Barrón-González
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, 66455, Mexico
| | - Gabriel Espinosa
- Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, 58060, Morelia, Michoacán, Mexico
| | - Jorge Luis Menchaca
- Facultad de Ciencias Físico Matemáticas, Universidad Autónoma de Nuevo León, Centro de Investigación en Ciencias Físico Matemáticas, San Nicolás de los Garza, Nuevo León, 66455, Mexico.
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52
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Tjioe M, Shukla S, Vaidya R, Troitskaia A, Bookwalter CS, Trybus KM, Chemla YR, Selvin PR. Multiple kinesins induce tension for smooth cargo transport. eLife 2019; 8:50974. [PMID: 31670658 PMCID: PMC6904222 DOI: 10.7554/elife.50974] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/31/2019] [Indexed: 12/17/2022] Open
Abstract
How cargoes move within a crowded cell—over long distances and at speeds nearly the same as when moving on unimpeded pathway—has long been mysterious. Through an in vitro force-gliding assay, which involves measuring nanometer displacement and piconewtons of force, we show that multiple mammalian kinesin-1 (from 2 to 8) communicate in a team by inducing tension (up to 4 pN) on the cargo. Kinesins adopt two distinct states, with one-third slowing down the microtubule and two-thirds speeding it up. Resisting kinesins tend to come off more rapidly than, and speed up when pulled by driving kinesins, implying an asymmetric tug-of-war. Furthermore, kinesins dynamically interact to overcome roadblocks, occasionally combining their forces. Consequently, multiple kinesins acting as a team may play a significant role in facilitating smooth cargo motion in a dense environment. This is one of few cases in which single molecule behavior can be connected to ensemble behavior of multiple motors. The inside of a cell is a crowded space, full of proteins and other molecules. Yet, the molecular motors that transport some of those molecules within the cell move at the same speed as they would in pure water – about one micrometer per second. How the molecular motors could achieve such speeds in crowded cells was unclear. Nevertheless, Tjioe et al. suspected that the answer might be related to how multiple motors work together. Molecular motors move by walking along filaments inside the cell and pulling their cargo from one location to another. Other molecules that bind to the filaments should, in theory, act like “roadblocks” and impede the movement of the cargo. Tjioe et al. studied a motor protein called kinesin, which walks on filaments called microtubules. But instead of looking at these motors moving along microtubules inside a cell, Tjioe et al. used a simpler system where the cell was eliminated, and all parts were purified. Specifically, Tjioe et al. tethered purified motors to a piece of glass and then observed them under an extremely accurate microscope as they moved free-floating, fluorescently labelled microtubules. The microtubules, in this scenario, were acting like cargoes, where many kinesins could bind. Each kinesin motor also had a small chemical tag that could emit light. By following the movement of the lights, it was possible to calculate what each kinesin was doing and how the cargo moved. When more than one kinesin molecule was acting, the tension and speed of one kinesin affected the movement of the others. In any group of kinesins, about two-thirds of kinesin pulled the cargo, and unexpectedly, about one-third tended to resist and slow the cargo. These latter kinesins were moved along with the group without actually driving the cargo. These resisting kinesins did come off more rapidly than the driving kinesins, meaning the cargo should be able to quickly bypass roadblocks. This would help to keep the whole group travelling in the right direction at a steady pace.
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Affiliation(s)
- Marco Tjioe
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States.,Center for the Physics of Living Cells, University of Illinois at Urbana-Champaign, Urbana, United States.,Department of Physics, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Saurabh Shukla
- Center for the Physics of Living Cells, University of Illinois at Urbana-Champaign, Urbana, United States.,Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Rohit Vaidya
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States.,Center for the Physics of Living Cells, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Alice Troitskaia
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Carol S Bookwalter
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, United States
| | - Kathleen M Trybus
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, United States
| | - Yann R Chemla
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States.,Center for the Physics of Living Cells, University of Illinois at Urbana-Champaign, Urbana, United States.,Department of Physics, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Paul R Selvin
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States.,Center for the Physics of Living Cells, University of Illinois at Urbana-Champaign, Urbana, United States.,Department of Physics, University of Illinois at Urbana-Champaign, Urbana, United States
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53
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Rodríguez‐Sevilla P, Sanz‐Rodríguez F, Peláez RP, Delgado‐Buscalioni R, Liang L, Liu X, Jaque D. Upconverting Nanorockers for Intracellular Viscosity Measurements During Chemotherapy. ACTA ACUST UNITED AC 2019; 3:e1900082. [DOI: 10.1002/adbi.201900082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/22/2019] [Indexed: 11/06/2022]
Affiliation(s)
| | - Francisco Sanz‐Rodríguez
- Fluorescence Imaging Group Departamento de Biología Facultad de CienciasUniversidad Autónoma de Madrid 28049 Madrid Spain
- Nanobiology GroupInstituto Ramón y Cajal de Investigación Sanitaria Hospital Ramón y Cajal. Ctra. De Colmenar Viejo Km. 9100 28034 Madrid Spain
| | - Raúl P. Peláez
- Departamento de Física Teórica de la Materia Condensada Facultad de CienciasUniversidad Autónoma de Madrid 28049 Madrid Spain
| | - Rafael Delgado‐Buscalioni
- Departamento de Física Teórica de la Materia Condensada Facultad de CienciasUniversidad Autónoma de Madrid 28049 Madrid Spain
| | - Liangliang Liang
- Department of ChemistryNational University of Singapore Science Drive 3 Singapore 117543 Singapore
| | - Xiaogang Liu
- Department of ChemistryNational University of Singapore Science Drive 3 Singapore 117543 Singapore
| | - Daniel Jaque
- Nanobiology GroupInstituto Ramón y Cajal de Investigación Sanitaria Hospital Ramón y Cajal. Ctra. De Colmenar Viejo Km. 9100 28034 Madrid Spain
- Fluorescence Imaging Group Departamento de Fisica de MaterialesUniversidad Autónoma de Madrid 28049 Madrid Spain
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54
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SoltanRezaee M, Bodaghi M, Farrokhabadi A. A thermosensitive electromechanical model for detecting biological particles. Sci Rep 2019; 9:11706. [PMID: 31406216 PMCID: PMC6691007 DOI: 10.1038/s41598-019-48177-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 07/31/2019] [Indexed: 11/24/2022] Open
Abstract
Miniature electromechanical systems form a class of bioMEMS that can provide appropriate sensitivity. In this research, a thermo-electro-mechanical model is presented to detect biological particles in the microscale. Identification in the model is based on analyzing pull-in instability parameters and frequency shifts. Here, governing equations are derived via the extended Hamilton’s principle. The coupled effects of system parameters such as surface layer energy, electric field correction, and material properties are incorporated in this thermosensitive model. Afterward, the accuracy of the present model and obtained results are validated with experimental, analytical, and numerical data for several cases. Performing a parametric study reveals that mechanical properties of biosensors can significantly affect the detection sensitivity of actuated ultra-small detectors and should be taken into account. Furthermore, it is shown that the number or dimension of deposited particles on the sensing zone can be estimated by investigating the changes in the threshold voltage, electrode deflection, and frequency shifts. The present analysis is likely to provide pertinent guidelines to design thermal switches and miniature detectors with the desired performance. The developed biosensor is more appropriate to detect and characterize viruses in samples with different temperatures.
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Affiliation(s)
- Masoud SoltanRezaee
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Mahdi Bodaghi
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom
| | - Amin Farrokhabadi
- Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
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55
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Zhang S, Gibson LJ, Stilgoe AB, Nieminen TA, Rubinsztein-Dunlop H. Measuring local properties inside a cell-mimicking structure using rotating optical tweezers. JOURNAL OF BIOPHOTONICS 2019; 12:e201900022. [PMID: 30779305 DOI: 10.1002/jbio.201900022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 05/06/2023]
Abstract
Exploring the rheological properties of intracellular materials is essential for understanding cellular and subcellular processes. Optical traps have been widely used for physical manipulation of micro and nano objects within fluids enabling studies of biological systems. However, experiments remain challenging as it is unclear how the probe particle's mobility is influenced by the nearby membranes and organelles. We use liposomes (unilamellar lipid vesicles) as a simple biomimetic model of living cells, together with a trapped particle rotated by optical tweezers to study mechanical and rheological properties inside a liposome both theoretically and experimentally. Here, we demonstrate that this system has the capacity to predict the hydrodynamic interaction between three-dimensional spatial membranes and internal probe particles within submicron distances, and it has the potential to aid in the design of high resolution optical micro/nanorheology techniques to be used inside living cells.
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Affiliation(s)
- Shu Zhang
- Department of Physics, School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland, Australia
| | - Lachlan J Gibson
- Department of Physics, School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland, Australia
| | - Alexander B Stilgoe
- Department of Physics, School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland, Australia
| | - Timo A Nieminen
- Department of Physics, School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland, Australia
| | - Halina Rubinsztein-Dunlop
- Department of Physics, School of Mathematics and Physics, The University of Queensland, Brisbane, Queensland, Australia
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56
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Thai LPA, Mousseau F, Oikonomou EK, Berret JF. On the rheology of pulmonary surfactant: Effects of concentration and consequences for the surfactant replacement therapy. Colloids Surf B Biointerfaces 2019; 178:337-345. [PMID: 30897431 DOI: 10.1016/j.colsurfb.2019.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 03/07/2019] [Accepted: 03/10/2019] [Indexed: 02/06/2023]
Abstract
The role of pulmonary surfactant is to reduce the surface tension in the lungs and to facilitate breathing. Surfactant replacement therapy (SRT) aims at bringing a substitute by instillation into the airways, a technique that has proven to be efficient and lifesaving for preterm infants. Adapting this therapy to adults requires to scale the administered dose to the patient body weight and to increase the lipid concentration, whilst maintaining its surface and flow properties similar. Here, we exploit a magnetic wire-based microrheology technique to measure the viscosity of the exogenous pulmonary surfactant Curosurf® in various experimental conditions. The Curosurf® viscosity is found to increase exponentially with lipid concentration following the Krieger-Dougherty law of colloids. The Krieger-Dougherty behavior also predicts a divergence of the viscosity at the liquid-to-gel transition. For Curosurf® the transition concentration is found close to the concentration at which it is formulated (117 g L-1versus 80 g L-1). This outcome suggests that for SRT the surfactant rheological properties need to be monitored and kept within a certain range. The results found here could help in producing suspensions for respiratory distress syndrome adapted to adults. The present work also demonstrates the potential of the magnetic wire microrheology technique as an accurate tool to explore biological soft matter dynamics.
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Affiliation(s)
- L P A Thai
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France
| | - F Mousseau
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France
| | - E K Oikonomou
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France
| | - J-F Berret
- Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France.
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57
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Aprelev P, Bruce TF, Beard CE, Adler PH, Kornev KG. Nucleation and Formation of a Primary Clot in Insect Blood. Sci Rep 2019; 9:3451. [PMID: 30837584 PMCID: PMC6401176 DOI: 10.1038/s41598-019-40129-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 01/31/2019] [Indexed: 02/07/2023] Open
Abstract
Blood clotting at wound sites is critical for preventing blood loss and invasion by microorganisms in multicellular animals, especially small insects vulnerable to dehydration. The mechanistic reaction of the clot is the first step in providing scaffolding for the formation of new epithelial and cuticular tissue. The clot, therefore, requires special materials properties. We have developed and used nano-rheological magnetic rotational spectroscopy with nanorods to quantitatively study nucleation of cell aggregates that occurs within fractions of a second. Using larvae of Manduca sexta, we discovered that clot nucleation is a two-step process whereby cell aggregation is the time-limiting step followed by rigidification of the aggregate. Clot nucleation and transformation of viscous blood into a visco-elastic aggregate happens in a few minutes, which is hundreds of times faster than wound plugging and scab formation. This discovery sets a time scale for insect clotting phenomena, establishing a materials metric for the kinetics of biochemical reaction cascades. Combined with biochemical and biomolecular studies, these discoveries can help design fast-working thickeners for vertebrate blood, including human blood, based on clotting principles of insect blood.
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Affiliation(s)
- Pavel Aprelev
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina, 29634, USA
| | - Terri F Bruce
- Light Imaging Facility, Clemson University, Clemson, South Carolina, 29634, USA
| | - Charles E Beard
- Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina, 29634, USA
| | - Peter H Adler
- Department of Plant and Environmental Sciences, Clemson University, Clemson, South Carolina, 29634, USA
| | - Konstantin G Kornev
- Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina, 29634, USA.
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58
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Jeong HH, Choi E, Ellis E, Lee TC. Recent advances in gold nanoparticles for biomedical applications: from hybrid structures to multi-functionality. J Mater Chem B 2019. [DOI: 10.1039/c9tb00557a] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Hybrid gold nanoparticles for biomedical applications are reviewed in the context of a novel classification framework and illustrated by recent examples.
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Affiliation(s)
- Hyeon-Ho Jeong
- Max Planck Institute for Intelligent Systems
- 70569 Stuttgart
- Germany
- Cavendish Laboratory
- University of Cambridge
| | - Eunjin Choi
- Max Planck Institute for Intelligent Systems
- 70569 Stuttgart
- Germany
| | - Elizabeth Ellis
- Department of Chemistry
- University College London (UCL)
- WC1H 0AJ London
- UK
- Institute for Materials Research and Engineering (IMRE)
| | - Tung-Chun Lee
- Department of Chemistry
- University College London (UCL)
- WC1H 0AJ London
- UK
- Institute for Materials Discovery
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59
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Mathieu S, Manneville JB. Intracellular mechanics: connecting rheology and mechanotransduction. Curr Opin Cell Biol 2018; 56:34-44. [PMID: 30253328 DOI: 10.1016/j.ceb.2018.08.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 08/21/2018] [Accepted: 08/27/2018] [Indexed: 12/30/2022]
Abstract
Cell mechanics is crucial for a wide range of cell functions, including proliferation, polarity, migration and differentiation. Cells sense external physical cues and translate them into a cellular response. While force sensing occurs in the vicinity of the plasma membrane, forces can reach deep in the cell interior and to the nucleus. We review here the recent developments in the field of intracellular mechanics. We focus first on intracellular rheology, the study of the mechanical properties of the cell interior, and recapitulate the contribution of active mechanisms, the cytoskeleton and intracellular organelles to cell rheology. We then discuss how forces are transmitted inside the cell during mechanotransduction events, through direct force transmission and biochemical signaling, and how intracellular rheology and mechanotransduction are connected.
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Affiliation(s)
- Samuel Mathieu
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France; Sorbonne Université, UPMC University Paris 06, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France
| | - Jean-Baptiste Manneville
- Institut Curie, PSL Research University, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France; Sorbonne Université, UPMC University Paris 06, CNRS, UMR 144, 26 rue d'Ulm, F-75005, Paris, France.
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60
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Microrheology, advances in methods and insights. Adv Colloid Interface Sci 2018; 257:71-85. [PMID: 29859615 DOI: 10.1016/j.cis.2018.04.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 03/23/2018] [Accepted: 04/14/2018] [Indexed: 01/19/2023]
Abstract
Microrheology is an emerging technique that probes mechanical response of soft material at micro-scale. Generally, microrheology technique can be divided into active and passive versions. During last two decades, extensive efforts have been paid to improve both the experiment techniques and data analysis methods, especially about how to link consequential particle positions into trajectories. We review the recent advances in microrheology, including improvements in labeling, imaging, data acquiring, data processing and data interpretation. Some of the recent insights in soft matter and living systems gained by using this technique are given. Before these, we also give a very brief description of the basic principles of both active and passive microrheology techniques, and some details about optical particle tracking and DWS.
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61
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Li Z, Lopez-Ortega A, Aranda-Ramos A, Tajada JL, Sort J, Nogues C, Vavassori P, Nogues J, Sepulveda B. Simultaneous Local Heating/Thermometry Based on Plasmonic Magnetochromic Nanoheaters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800868. [PMID: 29761629 DOI: 10.1002/smll.201800868] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/04/2018] [Indexed: 05/24/2023]
Abstract
A crucial challenge in nanotherapies is achieving accurate and real-time control of the therapeutic action, which is particularly relevant in local thermal therapies to minimize healthy tissue damage and necrotic cell deaths. Here, a nanoheater/thermometry concept is presented based on magnetoplasmonic (Co/Au or Fe/Au) nanodomes that merge exceptionally efficient plasmonic heating and simultaneous highly sensitive detection of the temperature variations. The temperature detection is based on precise optical monitoring of the magnetic-induced rotation of the nanodomes in solution. It is shown that the phase lag between the optical signal and the driving magnetic field can be used to detect viscosity variations around the nanodomes with unprecedented accuracy (detection limit 0.0016 mPa s, i.e., 60-fold smaller than state-of-the-art plasmonic nanorheometers). This feature is exploited to monitor the viscosity reduction induced by optical heating in real-time, even in highly inhomogeneous cell dispersions. The magnetochromic nanoheater/thermometers show higher optical stability, much higher heating efficiency and similar temperature detection limits (0.05 °C) compared to state-of-the art luminescent nanothermometers. The technological interest is also boosted by the simpler and lower cost temperature detection system, and the cost effectiveness and scalability of the nanofabrication process, thereby highlighting the biomedical potential of this nanotechnology.
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Affiliation(s)
- Zhi Li
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) and Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193, Barcelona, Spain
- Departament de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain
| | | | - Antonio Aranda-Ramos
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autónoma de Barcelona, Bellaterra, 08193, Barcelona, Spain
| | - José Luis Tajada
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) and Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Jordi Sort
- Departament de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain
| | - Carme Nogues
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autónoma de Barcelona, Bellaterra, 08193, Barcelona, Spain
| | - Paolo Vavassori
- CIC nanoGUNE, E-20018, Donostia-San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, E-40013, Bilbao, Spain
| | - Josep Nogues
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) and Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain
| | - Borja Sepulveda
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Consejo Superior de Investigaciones Científicas (CSIC) and Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193, Barcelona, Spain
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62
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Septiadi D, Crippa F, Moore TL, Rothen-Rutishauser B, Petri-Fink A. Nanoparticle-Cell Interaction: A Cell Mechanics Perspective. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704463. [PMID: 29315860 DOI: 10.1002/adma.201704463] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/14/2017] [Indexed: 05/22/2023]
Abstract
Progress in the field of nanoparticles has enabled the rapid development of multiple products and technologies; however, some nanoparticles can pose both a threat to the environment and human health. To enable their safe implementation, a comprehensive knowledge of nanoparticles and their biological interactions is needed. In vitro and in vivo toxicity tests have been considered the gold standard to evaluate nanoparticle safety, but it is becoming necessary to understand the impact of nanosystems on cell mechanics. Here, the interaction between particles and cells, from the point of view of cell mechanics (i.e., bionanomechanics), is highlighted and put in perspective. Specifically, the ability of intracellular and extracellular nanoparticles to impair cell adhesion, cytoskeletal organization, stiffness, and migration are discussed. Furthermore, the development of cutting-edge, nanotechnology-driven tools based on the use of particles allowing the determination of cell mechanics is emphasized. These include traction force microscopy, colloidal probe atomic force microscopy, optical tweezers, magnetic manipulation, and particle tracking microrheology.
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Affiliation(s)
- Dedy Septiadi
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | - Federica Crippa
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | - Thomas Lee Moore
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
| | | | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700, Fribourg, Switzerland
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63
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Shinoda T, Nagasaka A, Inoue Y, Higuchi R, Minami Y, Kato K, Suzuki M, Kondo T, Kawaue T, Saito K, Ueno N, Fukazawa Y, Nagayama M, Miura T, Adachi T, Miyata T. Elasticity-based boosting of neuroepithelial nucleokinesis via indirect energy transfer from mother to daughter. PLoS Biol 2018; 16:e2004426. [PMID: 29677184 PMCID: PMC5931692 DOI: 10.1371/journal.pbio.2004426] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 05/02/2018] [Accepted: 03/22/2018] [Indexed: 11/19/2022] Open
Abstract
Neural progenitor cells (NPCs), which are apicobasally elongated and densely packed in the developing brain, systematically move their nuclei/somata in a cell cycle–dependent manner, called interkinetic nuclear migration (IKNM): apical during G2 and basal during G1. Although intracellular molecular mechanisms of individual IKNM have been explored, how heterogeneous IKNMs are collectively coordinated is unknown. Our quantitative cell-biological and in silico analyses revealed that tissue elasticity mechanically assists an initial step of basalward IKNM. When the soma of an M-phase progenitor cell rounds up using actomyosin within the subapical space, a microzone within 10 μm from the surface, which is compressed and elastic because of the apical surface’s contractility, laterally pushes the densely neighboring processes of non–M-phase cells. The pressed processes then recoil centripetally and basally to propel the nuclei/somata of the progenitor’s daughter cells. Thus, indirect neighbor-assisted transfer of mechanical energy from mother to daughter helps efficient brain development. The development of large brain structures, such as the mammalian cerebral cortex, depends on the continuous and efficient production of cells by neural progenitor cells. Neural progenitor cells are elongated and span the developing brain wall. The nuclei and bodies of these cells move cyclically between the apical and basal surfaces, and they divide every time they reach the apical surface. While we understand how individual cells achieve this cycle, how the movements of several progenitor cells are coordinated with one another remains elusive. By using a combination of live imaging and mechanical experiments, coupled with mathematical simulations, we show that cell crowding at the apical surface, where progenitor cells divide, creates a subapical microzone that is compressed and elastic. We then show that when each mother cell rounds up, preparing for division, it pushes this elastic microzone laterally, thereby storing mechanical energy. After cell division, this mechanical energy is transferred to the daughter cells, propelling them along the axis of movement in the direction of the basal surface, in an energy-saving manner. Our mathematical simulations show that timely departure of newly generated daughter cells is critical for the overall tissue structure of the cerebral proliferative zone.
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Affiliation(s)
- Tomoyasu Shinoda
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail: (TM); (TS)
| | - Arata Nagasaka
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiro Inoue
- Department of Biosystems Science, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Ryo Higuchi
- Research Institute for Electronic Science, Hokkaido University, Hokkaido, Japan
| | - Yoshiaki Minami
- Research Institute for Electronic Science, Hokkaido University, Hokkaido, Japan
| | - Kagayaki Kato
- Department of Imaging Science, Center for Novel Science Initiatives, National institute for Basic Biology, Okazaki, Japan
| | - Makoto Suzuki
- Division of Morphogenesis, National institute for Basic Biology, Okazaki, Japan
| | - Takefumi Kondo
- Laboratory for Morphogenetic Signaling, RIKEN Center for Developmental Biology, Kobe, Japan
| | - Takumi Kawaue
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kanako Saito
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoto Ueno
- Division of Morphogenesis, National institute for Basic Biology, Okazaki, Japan
| | - Yugo Fukazawa
- Division of Cell Biology and Neuroscience, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Masaharu Nagayama
- Research Institute for Electronic Science, Hokkaido University, Hokkaido, Japan
| | - Takashi Miura
- Department of Anatomy and Cell Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Taiji Adachi
- Department of Biosystems Science, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takaki Miyata
- Department of Anatomy and Cell Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- * E-mail: (TM); (TS)
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64
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Zhang X, Song C, Ma G, Wei W. Mechanical determination of particle–cell interactions and the associated biomedical applications. J Mater Chem B 2018; 6:7129-7143. [DOI: 10.1039/c8tb01590b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mechanical determination of particle–cell interactions and the associated biomedical applications.
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Affiliation(s)
- Xiao Zhang
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Cui Song
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Guanghui Ma
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Wei Wei
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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65
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Koslover EF, Chan CK, Theriot JA. Cytoplasmic Flow and Mixing Due to Deformation of Motile Cells. Biophys J 2017; 113:2077-2087. [PMID: 29117530 DOI: 10.1016/j.bpj.2017.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 09/06/2017] [Accepted: 09/11/2017] [Indexed: 11/30/2022] Open
Abstract
The cytoplasm of a living cell is a dynamic environment through which intracellular components must move and mix. In motile, rapidly deforming cells such as human neutrophils, bulk cytoplasmic flow couples cell deformation to the transport and dispersion of cytoplasmic particles. Using particle-tracking measurements in live neutrophil-like cells, we demonstrate that fluid flow associated with the cell deformation contributes to the motion of small acidic organelles, dominating over diffusion on timescales above a few seconds. We then use a general physical model of particle dispersion in a deforming fluid domain to show that transport of organelle-sized particles between the cell periphery and the bulk can be enhanced by dynamic deformation comparable to that observed in neutrophils. Our results implicate an important mechanism contributing to organelle transport in these motile cells: cytoplasmic flow driven by cell shape deformation.
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Affiliation(s)
- Elena F Koslover
- Department of Physics, University of California, San Diego, San Diego, California.
| | - Caleb K Chan
- Department of Biochemistry, Stanford University School of Medicine, Stanford, California
| | - Julie A Theriot
- Department of Biochemistry, Stanford University School of Medicine, Stanford, California; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California
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66
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Liu W, Wu C. Rheological Study of Soft Matters: A Review of Microrheology and Microrheometers. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700307] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wei Liu
- Department of Physics; The Chinese University of Hong Kong; Shatin N.T. Hong Kong 999077
| | - Chi Wu
- Department of Chemistry; The Chinese University of Hong Kong; Shatin N.T. Hong Kong 999077
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67
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Size- and speed-dependent mechanical behavior in living mammalian cytoplasm. Proc Natl Acad Sci U S A 2017; 114:9529-9534. [PMID: 28827333 DOI: 10.1073/pnas.1702488114] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Active transport in the cytoplasm plays critical roles in living cell physiology. However, the mechanical resistance that intracellular compartments experience, which is governed by the cytoplasmic material property, remains elusive, especially its dependence on size and speed. Here we use optical tweezers to drag a bead in the cytoplasm and directly probe the mechanical resistance with varying size a and speed V We introduce a method, combining the direct measurement and a simple scaling analysis, to reveal different origins of the size- and speed-dependent resistance in living mammalian cytoplasm. We show that the cytoplasm exhibits size-independent viscoelasticity as long as the effective strain rate V/a is maintained in a relatively low range (0.1 s-1 < V/a < 2 s-1) and exhibits size-dependent poroelasticity at a high effective strain rate regime (5 s-1 < V/a < 80 s-1). Moreover, the cytoplasmic modulus is found to be positively correlated with only V/a in the viscoelastic regime but also increases with the bead size at a constant V/a in the poroelastic regime. Based on our measurements, we obtain a full-scale state diagram of the living mammalian cytoplasm, which shows that the cytoplasm changes from a viscous fluid to an elastic solid, as well as from compressible material to incompressible material, with increases in the values of two dimensionless parameters, respectively. This state diagram is useful to understand the underlying mechanical nature of the cytoplasm in a variety of cellular processes over a broad range of speed and size scales.
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68
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Yan B, Ren J, Zheng X, Liu Y, Zou Q. High-speed broadband monitoring of cell viscoelasticity in real time shows myosin-dependent oscillations. Biomech Model Mechanobiol 2017; 16:1857-1868. [PMID: 28597224 DOI: 10.1007/s10237-017-0924-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 06/01/2017] [Indexed: 10/19/2022]
Abstract
Study of the dynamic evolutions of cell viscoelasticity is important as during cell activities such as cell metastasis and invasion, the rheological behaviors of the cells also change dynamically, reflecting the biophysical and biochemical connections between the outer cortex and the intracellular structures. Although the time variations of the static modulus of cells have been investigated, few studies have been reported on the dynamic variations of the frequency-dependent viscoelasticity of cells. Measuring and monitoring such dynamic evolutions of cells at nanoscale can be challenging as the measurement needs to meet two objectives inherently contradictory to each other-the measurement must be broadband (to cover a large frequency spectrum) but also rapid (to capture the time-elapsed changes). In this study, we exploited a recently developed control-based nanomechanical protocol of atomic force microscope to monitor in real time the dynamic evolutions of the viscoelasticity of live human prostate cancer cells (PC-3 cells) and study its dependence on myosin activities. We found that the viscoelasticity of PC-3 cells, followed the power law, and oscillated at a period of about 200 s. Both the amplitude and the frequency of the oscillation strongly depended on the intracellular calcium and blebbistatin-sensitive motor proteins.
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Affiliation(s)
- Bo Yan
- School of Electrical and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Juan Ren
- Department of Mechanical Engineering, Iowa State University, Ames, IA, USA
| | - Xi Zheng
- Department of Biochemical Biology, Rutgers University, Piscataway, NJ, USA
| | - Yue Liu
- Department of Biochemical Biology, Rutgers University, Piscataway, NJ, USA
| | - Qingze Zou
- Mechanical and Aerospace Engineering Department, Rutgers University, 98 Brett Road, Piscataway, NJ, 08854, USA.
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69
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Li M, Dang D, Liu L, Xi N, Wang Y. Atomic Force Microscopy in Characterizing Cell Mechanics for Biomedical Applications: A Review. IEEE Trans Nanobioscience 2017; 16:523-540. [PMID: 28613180 DOI: 10.1109/tnb.2017.2714462] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cell mechanics is a novel label-free biomarker for indicating cell states and pathological changes. The advent of atomic force microscopy (AFM) provides a powerful tool for quantifying the mechanical properties of single living cells in aqueous conditions. The wide use of AFM in characterizing cell mechanics in the past two decades has yielded remarkable novel insights in understanding the development and progression of certain diseases, such as cancer, showing the huge potential of cell mechanics for practical applications in the field of biomedicine. In this paper, we reviewed the utilization of AFM to characterize cell mechanics. First, the principle and method of AFM single-cell mechanical analysis was presented, along with the mechanical responses of cells to representative external stimuli measured by AFM. Next, the unique changes of cell mechanics in two types of physiological processes (stem cell differentiation, cancer metastasis) revealed by AFM were summarized. After that, the molecular mechanisms guiding cell mechanics were analyzed. Finally the challenges and future directions were discussed.
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70
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Alibert C, Goud B, Manneville JB. Are cancer cells really softer than normal cells? Biol Cell 2017; 109:167-189. [DOI: 10.1111/boc.201600078] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 02/23/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Charlotte Alibert
- Institut Curie; PSL Research University, CNRS; UMR 144 Paris France
- Sorbonne Universités, UPMC University Paris 06, CNRS; UMR 144 Paris France
| | - Bruno Goud
- Institut Curie; PSL Research University, CNRS; UMR 144 Paris France
- Sorbonne Universités, UPMC University Paris 06, CNRS; UMR 144 Paris France
| | - Jean-Baptiste Manneville
- Institut Curie; PSL Research University, CNRS; UMR 144 Paris France
- Sorbonne Universités, UPMC University Paris 06, CNRS; UMR 144 Paris France
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71
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Gerbal F, Wang Y. Optical detection of nanometric thermal fluctuations to measure the stiffness of rigid superparamagnetic microrods. Proc Natl Acad Sci U S A 2017; 114:2456-2461. [PMID: 28228530 PMCID: PMC5347538 DOI: 10.1073/pnas.1608697114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The rigidity of numerous biological filaments and crafted microrods has been conveniently deduced from the analysis of their thermal fluctuations. However, the difficulty of measuring nanometric displacements with an optical microscope has so far limited such studies to sufficiently flexible rods, of which the persistence length ([Formula: see text]) rarely exceeds 1 m at room temperature. Here, we demonstrate the possibility to probe 10-fold stiffer rods by a combination of superresolutive optical methods and a statistical analysis of the data based on a recent theoretical model that predicts the amplitude of the fluctuations at any location of the rod [Benetatos P, Frey E (2003) Phys Rev E Stat Nonlin Soft Matter Phys 67(5):051108]. Using this approach, we report measures of [Formula: see text] up to 0.5 km. We obtained these measurements on recently designed superparamagnetic [Formula: see text]40-[Formula: see text]m-long microrods containing iron-oxide nanoparticles connected by a polymer mesh. Using their magnetic properties, we provide an alternative proof of validity of these thermal measurements: For each individual studied rod, we performed a second measure of its rigidity by deflecting it with a uniform magnetic field. The agreement between the thermal and the magnetoelastic measures was realized with more than a decade of values of [Formula: see text] from 5.1 m to 129 m, corresponding to a bending modulus ranging from 2.2 to 54 (×[Formula: see text] Jm). Despite the apparent homogeneity of the analyzed microrods, their Young modulus follows a broad distribution from 1.9 MPa to 59 MPa and up to 200 MPa, depending on the size of the nanoparticles.
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Affiliation(s)
- Fabien Gerbal
- Laboratoire Matière et Systèmes Complexes UMR 7057 (CNRS) and Université Denis Diderot-Sorbonne Paris Cité, 75013 Paris, France;
- Université Pierre et Marie Curie-Paris 6, Sorbonne Universités, 75252 Paris Cedex 05, France
| | - Yuan Wang
- Laboratoire Matière et Systèmes Complexes UMR 7057 (CNRS) and Université Denis Diderot-Sorbonne Paris Cité, 75013 Paris, France
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72
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Yi Y, Sanchez L, Gao Y, Lee K, Yu Y. Interrogating Cellular Functions with Designer Janus Particles. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2017; 29:1448-1460. [PMID: 31530969 PMCID: PMC6748339 DOI: 10.1021/acs.chemmater.6b05322] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Janus particles have two distinct surfaces or compartments. This enables novel applications that are impossible with homogeneous particles, ranging from the engineering of active colloidal metastructures to creating multimodal therapeutic materials. Recent years have witnessed a rapid development of novel Janus structures and exploration of their applications, particularly in the biomedical arena. It, therefore, becomes crucial to understand how Janus particles with surface or structural anisotropy might interact with biological systems and how such interactions may be exploited to manipulate biological responses. This perspective highlights recent studies that have employed Janus particles as novel toolsets to manipulate, measure, and understand cellular functions. Janus particles have been shown to have biological interactions different from uniform particles. Their surface anisotropy has been used to control the cell entry of synthetic particles, to spatially organize stimuli for the activation of immune cells, and to enable direct visualization and measurement of rotational dynamics of particles in living systems. The work included in this perspective showcases the significance of understanding the biological interactions of Janus particles and the tremendous potential of harnessing such interactions to advance the development of Janus structure-based biomaterials.
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Affiliation(s)
| | | | | | | | - Yan Yu
- Corresponding Author (Y.Yu)
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73
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Ayala YA, Pontes B, Hissa B, Monteiro ACM, Farina M, Moura-Neto V, Viana NB, Nussenzveig HM. Effects of cytoskeletal drugs on actin cortex elasticity. Exp Cell Res 2017; 351:173-181. [DOI: 10.1016/j.yexcr.2016.12.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 11/30/2016] [Accepted: 12/22/2016] [Indexed: 12/27/2022]
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74
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Rodríguez-Sevilla P, Zhang Y, de Sousa N, Marqués MI, Sanz-Rodríguez F, Jaque D, Liu X, Haro-González P. Optical Torques on Upconverting Particles for Intracellular Microrheometry. NANO LETTERS 2016; 16:8005-8014. [PMID: 27960460 DOI: 10.1021/acs.nanolett.6b04583] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Precise knowledge and control over the orientation of individual upconverting particles is extremely important for full exploiting their capabilities as multifunctional bioprobes for interdisciplinary applications. In this work, we report on how time-resolved, single particle polarized spectroscopy can be used to determine the orientation dynamics of a single upconverting particle when entering into an optical trap. Experimental results have unequivocally evidenced the existence of a unique stable configuration. Numerical simulations and simple numerical calculations have demonstrated that the dipole magnetic interactions between the upconverting particle and trapping radiation are the main mechanisms responsible of the optical torques that drive the upconverting particle to its stable orientation. Finally, how a proper analysis of the rotation dynamics of a single upconverting particle within an optical trap can provide valuable information about the properties of the medium in which it is suspended is demonstrated. A proof of concept is given in which the laser driven intracellular rotation of upconverting particles is used to successfully determine the intracellular dynamic viscosity by a passive and an active method.
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Affiliation(s)
- Paloma Rodríguez-Sevilla
- Fluorescence Imaging Group, Departamento de Física de Materiales, Universidad Autónoma de Madrid , 28049 Madrid, Spain
| | - Yuhai Zhang
- Department of Chemistry, National University of Singapore , Science Drive 3, Singapore 117543, Singapore
| | - Nuno de Sousa
- Departamento de Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC), and Nicolás Cabrera Institute, Universidad Autónoma de Madrid , 28049 Madrid, Spain
- Donostia International Physics Center (DIPC) , Donostia-San Sebastián 20018, Spain
| | - Manuel I Marqués
- Departamento de Física de Materiales, Condensed Matter Physics Center (IFIMAC), and Nicolás Cabrera Institute, Universidad Autónoma de Madrid , 28049 Madrid, Spain
| | - Francisco Sanz-Rodríguez
- Fluorescence Imaging Group, Departamento de Física de Materiales, Universidad Autónoma de Madrid , 28049 Madrid, Spain
- Instituto Ramón y Cajal de Investigaciones Sanitarias, Hospital Ramón y Cajal , Madrid 28034, Spain
| | - Daniel Jaque
- Fluorescence Imaging Group, Departamento de Física de Materiales, Universidad Autónoma de Madrid , 28049 Madrid, Spain
- Instituto Ramón y Cajal de Investigaciones Sanitarias, Hospital Ramón y Cajal , Madrid 28034, Spain
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore , Science Drive 3, Singapore 117543, Singapore
| | - Patricia Haro-González
- Fluorescence Imaging Group, Departamento de Física de Materiales, Universidad Autónoma de Madrid , 28049 Madrid, Spain
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75
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Shamsudhin N, Tao Y, Sort J, Jang B, Degen CL, Nelson BJ, Pané S. Magnetometry of Individual Polycrystalline Ferromagnetic Nanowires. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6363-6369. [PMID: 27690370 DOI: 10.1002/smll.201602338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/25/2016] [Indexed: 06/06/2023]
Abstract
Ferromagnetic nanowires are finding use as untethered sensors and actuators for probing micro- and nanoscale biophysical phenomena, such as for localized sensing and application of forces and torques on biological samples, for tissue heating through magnetic hyperthermia, and for microrheology. Quantifying the magnetic properties of individual isolated nanowires is crucial for such applications. Dynamic cantilever magnetometry is used to measure the magnetic properties of individual sub-500 nm diameter polycrystalline nanowires of Ni and Ni80 Co20 fabricated by template-assisted electrochemical deposition. The values are compared with bulk, ensemble measurements when the nanowires are still embedded within their growth matrix. It is found that single-particle and ensemble measurements of nanowires yield significantly different results that reflect inter-nanowire interactions and chemical modifications of the sample during the release process from the growth matrix. The results highlight the importance of performing single-particle characterization for objects that will be used as individual magnetic nanoactuators or nanosensors in biomedical applications.
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Affiliation(s)
- Naveen Shamsudhin
- Multi-Scale Robotics Laboratory, ETH Zurich, Zurich, 8092, Switzerland
| | - Ye Tao
- Department of Physics, ETH Zurich, Zurich, 8092, Switzerland
| | - Jordi Sort
- Institució Catalana de Recerca i Estudis Avançats (ICREA) and Departament de Física, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, 08193, Spain
| | - Bumjin Jang
- Multi-Scale Robotics Laboratory, ETH Zurich, Zurich, 8092, Switzerland
| | | | - Bradley J Nelson
- Multi-Scale Robotics Laboratory, ETH Zurich, Zurich, 8092, Switzerland
| | - Salvador Pané
- Multi-Scale Robotics Laboratory, ETH Zurich, Zurich, 8092, Switzerland
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76
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Loosli F, Najm M, Chan R, Oikonomou E, Grados A, Receveur M, Berret JF. Wire-Active Microrheology to Differentiate Viscoelastic Liquids from Soft Solids. Chemphyschem 2016; 17:4134-4143. [DOI: 10.1002/cphc.201601037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 10/15/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Frédéric Loosli
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Matthieu Najm
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Raymond Chan
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Evdokia Oikonomou
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Arnaud Grados
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Mathieu Receveur
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
| | - Jean-François Berret
- Matière et Systèmes Complexes, UMR 7057 CNRS; Université Denis Diderot Paris-VII, Bâtiment Condorcet; 10 rue Alice Domon et Léonie Duquet 75205 Paris France
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77
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Mapping intracellular mechanics on micropatterned substrates. Proc Natl Acad Sci U S A 2016; 113:E7159-E7168. [PMID: 27799529 DOI: 10.1073/pnas.1605112113] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The mechanical properties of cells impact on their architecture, their migration, intracellular trafficking, and many other cellular functions and have been shown to be modified during cancer progression. We have developed an approach to map the intracellular mechanical properties of living cells by combining micropatterning and optical tweezers-based active microrheology. We optically trap micrometer-sized beads internalized in cells plated on crossbow-shaped adhesive micropatterns and track their displacement following a step displacement of the cell. The local intracellular complex shear modulus is measured from the relaxation of the bead position assuming that the intracellular microenvironment of the bead obeys power-law rheology. We also analyze the data with a standard viscoelastic model and compare with the power-law approach. We show that the shear modulus decreases from the cell center to the periphery and from the cell rear to the front along the polarity axis of the micropattern. We use a variety of inhibitors to quantify the spatial contribution of the cytoskeleton, intracellular membranes, and ATP-dependent active forces to intracellular mechanics and apply our technique to differentiate normal and cancer cells.
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78
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Jeong HH, Mark AG, Lee TC, Alarcón-Correa M, Eslami S, Qiu T, Gibbs JG, Fischer P. Active Nanorheology with Plasmonics. NANO LETTERS 2016; 16:4887-4894. [PMID: 27367304 DOI: 10.1021/acs.nanolett.6b01404] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanoplasmonic systems are valued for their strong optical response and their small size. Most plasmonic sensors and systems to date have been rigid and passive. However, rendering these structures dynamic opens new possibilities for applications. Here we demonstrate that dynamic plasmonic nanoparticles can be used as mechanical sensors to selectively probe the rheological properties of a fluid in situ at the nanoscale and in microscopic volumes. We fabricate chiral magneto-plasmonic nanocolloids that can be actuated by an external magnetic field, which in turn allows for the direct and fast modulation of their distinct optical response. The method is robust and allows nanorheological measurements with a mechanical sensitivity of ∼0.1 cP, even in strongly absorbing fluids with an optical density of up to OD ∼ 3 (∼0.1% light transmittance) and in the presence of scatterers (e.g., 50% v/v red blood cells).
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Affiliation(s)
- Hyeon-Ho Jeong
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute of Materials, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Andrew G Mark
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
| | - Tung-Chun Lee
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- UCL Institute for Materials Discovery and Department of Chemistry, University College London , Christopher Ingold Building, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Mariana Alarcón-Correa
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute for Physical Chemistry, University of Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Sahand Eslami
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute for Physical Chemistry, University of Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Tian Qiu
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - John G Gibbs
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Department of Physics and Astronomy, Northern Arizona University , S. San Francisco Street, Flagstaff, Arizona 86011, United States
| | - Peer Fischer
- Max Planck Institute for Intelligent Systems , Heisenbergstrasse 3, 70569 Stuttgart, Germany
- Institute for Physical Chemistry, University of Stuttgart , Pfaffenwaldring 55, 70569 Stuttgart, Germany
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79
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Ayala YA, Pontes B, Ether DS, Pires LB, Araujo GR, Frases S, Romão LF, Farina M, Moura-Neto V, Viana NB, Nussenzveig HM. Rheological properties of cells measured by optical tweezers. BMC BIOPHYSICS 2016; 9:5. [PMID: 27340552 PMCID: PMC4917937 DOI: 10.1186/s13628-016-0031-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/10/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND The viscoelastic properties of cells have been investigated by a variety of techniques. However, the experimental data reported in literature for viscoelastic moduli differ by up to three orders of magnitude. This has been attributed to differences in techniques and models for cell response as well as to the natural variability of cells. RESULTS In this work we develop and apply a new methodology based on optical tweezers to investigate the rheological behavior of fibroblasts, neurons and astrocytes in the frequency range from 1Hz to 35Hz, determining the storage and loss moduli of their membrane-cortex complex. To avoid distortions associated with cell probing techniques, we use a previously developed method that takes into account the influence of under bead cell thickness and bead immersion. These two parameters were carefully measured for the three cell types used. Employing the soft glass rheology model, we obtain the scaling exponent and the Young's modulus for each cell type. The obtained viscoelastic moduli are in the order of Pa. Among the three cell types, astrocytes have the lowest elastic modulus, while neurons and fibroblasts exhibit a more solid-like behavior. CONCLUSIONS Although some discrepancies with previous results remain and may be inevitable in view of natural variability, the methodology developed in this work allows us to explore the viscoelastic behavior of the membrane-cortex complex of different cell types as well as to compare their viscous and elastic moduli, obtained under identical and well-defined experimental conditions, relating them to the cell functions.
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Affiliation(s)
- Yareni A Ayala
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil.,Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-972 Brazil
| | - Bruno Pontes
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil
| | - Diney S Ether
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil.,Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-972 Brazil
| | - Luis B Pires
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil.,Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-972 Brazil
| | - Glauber R Araujo
- Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil
| | - Susana Frases
- Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil
| | - Luciana F Romão
- Universidade Federal do Rio de Janeiro - Pólo de Xerém, Duque de Caxias, Rio de Janeiro 25245-390 Brazil
| | - Marcos Farina
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil
| | - Vivaldo Moura-Neto
- Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Rio de Janeiro 20231-092 Brazil
| | - Nathan B Viana
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil.,Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-972 Brazil
| | - H Moysés Nussenzveig
- LPO-COPEA, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-902 Brazil.,Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-972 Brazil
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80
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Lee K, Yi Y, Yu Y. Remote Control of T Cell Activation Using Magnetic Janus Particles. Angew Chem Int Ed Engl 2016; 55:7384-7. [PMID: 27144475 DOI: 10.1002/anie.201601211] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/20/2016] [Indexed: 12/22/2022]
Abstract
We report a strategy for using magnetic Janus microparticles to control the stimulation of T cell signaling with single-cell precision. To achieve this, we designed Janus particles that are magnetically responsive on one hemisphere and stimulatory to T cells on the other side. By manipulating the rotation and locomotion of Janus particles under an external magnetic field, we could control the orientation of the particle-cell recognition and thereby the initiation of T cell activation. This study demonstrates a step towards employing anisotropic material properties of Janus particles to control single-cell activities without the need of complex magnetic manipulation devices.
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Affiliation(s)
- Kwahun Lee
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Yi Yi
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Yan Yu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA.
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81
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Lee K, Yi Y, Yu Y. Remote Control of T Cell Activation Using Magnetic Janus Particles. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kwahun Lee
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Yi Yi
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Yan Yu
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
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82
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Wei L, Xu J, Ye Z, Zhu X, Zhong M, Luo W, Chen B, Duan H, Liu Q, Xiao L. Orientational Imaging of a Single Gold Nanorod at the Liquid/Solid Interface with Polarized Evanescent Field Illumination. Anal Chem 2016; 88:1995-9. [DOI: 10.1021/acs.analchem.5b04695] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Lin Wei
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Jianghong Xu
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Zhongju Ye
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Xupeng Zhu
- School
of Physics and Electronics, Hunan University, Changsha, Hunan 410082, People’s Republic of China
| | - Meile Zhong
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Wenjuan Luo
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Bo Chen
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
| | - Huigao Duan
- School
of Physics and Electronics, Hunan University, Changsha, Hunan 410082, People’s Republic of China
| | - Quanhui Liu
- School
of Physics and Electronics, Hunan University, Changsha, Hunan 410082, People’s Republic of China
| | - Lehui Xiao
- Dynamic Optical Microscopic Imaging Laboratory, Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Key Laboratory of Phytochemical R&D of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410082, People’s Republic of China
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