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Jebane C, Varlet AA, Karnat M, Hernandez- Cedillo LM, Lecchi A, Bedu F, Desgrouas C, Vigouroux C, Vantyghem MC, Viallat A, Rupprecht JF, Helfer E, Badens C. Enhanced cell viscosity: A new phenotype associated with lamin A/C alterations. iScience 2023; 26:107714. [PMID: 37701573 PMCID: PMC10494210 DOI: 10.1016/j.isci.2023.107714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/13/2023] [Accepted: 08/22/2023] [Indexed: 09/14/2023] Open
Abstract
Lamin A/C is a well-established key contributor to nuclear stiffness and its role in nucleus mechanical properties has been extensively studied. However, its impact on whole-cell mechanics has been poorly addressed, particularly concerning measurable physical parameters. In this study, we combined microfluidic experiments with theoretical analyses to quantitatively estimate the whole-cell mechanical properties. This allowed us to characterize the mechanical changes induced in cells by lamin A/C alterations and prelamin A accumulation resulting from atazanavir treatment or lipodystrophy-associated LMNA R482W pathogenic variant. Our results reveal a distinctive increase in long-time viscosity as a signature of cells affected by lamin A/C alterations. Furthermore, they show that the whole-cell response to mechanical stress is driven not only by the nucleus but also by the nucleo-cytoskeleton links and the microtubule network. The enhanced cell viscosity assessed with our microfluidic assay could serve as a valuable diagnosis marker for lamin-related diseases.
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Affiliation(s)
- Cécile Jebane
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | | | - Marc Karnat
- Aix Marseille Univ, Université de Toulon, CNRS, CPT, Turing Centre for Living Systems, Marseille, France
| | | | | | | | | | - Corinne Vigouroux
- Assistance Publique–Hôpitaux de Paris (AP-HP), Saint-Antoine Hospital, National Reference Centre for Rares diseases of Insulin-Secretion and Insulin-Sensitivity (PRISIS), Department of Endocrinology, Paris, France
- Sorbonne University, Saint-Antoine Research Centre, Inserm UMR_S938, Institute of Cardiometabolism and Nutrition, Paris, France
| | - Marie-Christine Vantyghem
- Endocrinology, Diabetology and Metabolism Department, Inserm U1190, EGID, Lille University Hospital, Lille, France
| | - Annie Viallat
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | - Jean-François Rupprecht
- Aix Marseille Univ, Université de Toulon, CNRS, CPT, Turing Centre for Living Systems, Marseille, France
| | - Emmanuèle Helfer
- Aix Marseille Univ, CNRS, CINAM, Turing Centre for Living Systems, Marseille, France
| | - Catherine Badens
- Aix Marseille Univ, INSERM, MMG, Marseille, France
- AP-HM, Laboratoire de Biochimie, Marseille, France
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Bouanane I, Bedu F, Ozerov I, Sciacca B, Santinacci L, Duché D, Berginc G, Escoubas L, Margeat O, Le Rouzo J. Design of infrared optical absorber using silver nanorings array made by a top-down process. Sci Rep 2023; 13:7770. [PMID: 37173376 PMCID: PMC10182000 DOI: 10.1038/s41598-023-34579-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
This paper presents the numerical simulation and fabrication of a metasurface composed of silver nanorings with a split-ring gap. These nanostructures can exhibit optically-induced magnetic responses with unique possibilities to control absorption at optical frequencies. The absorption coefficient of the silver nanoring was optimized by performing a parametric study with Finite Difference Time Domain (FDTD) simulations. The absorption and scattering cross sections of the nanostructures are numerically calculated to assess the impact of the inner and outer radii, the thickness and the split-ring gap of one nanoring, as well as the periodicity factor for a group of four nanorings. This showed full control on resonance peaks and absorption enhancement in the near infrared spectral range. The experimental fabrication of this metasurface made of an array of silver nanorings is achieved by e-beam lithography and metallization. Optical characterizations are then carried out and compared to the numerical simulations. In contrast to usual microwave split-ring resonator metasurfaces reported in literature, the present study shows both the realization by a top-down process and modelling performed in the infrared frequency range.
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Affiliation(s)
- I Bouanane
- Aix Marseille University, Université de Toulon, CNRS, IM2NP, Marseille, France.
- Thales LAS France SAS, Élancourt, France.
| | - F Bedu
- Aix Marseille University, CNRS, CINAM, AMUTECH, Marseille, France
| | - I Ozerov
- Aix Marseille University, CNRS, CINAM, AMUTECH, Marseille, France
| | - B Sciacca
- Aix Marseille University, CNRS, CINAM, AMUTECH, Marseille, France
| | - L Santinacci
- Aix Marseille University, CNRS, CINAM, AMUTECH, Marseille, France
| | - D Duché
- Aix Marseille University, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - G Berginc
- Thales LAS France SAS, Élancourt, France
| | - L Escoubas
- Aix Marseille University, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - O Margeat
- Aix Marseille University, CNRS, CINAM, AMUTECH, Marseille, France
| | - J Le Rouzo
- Aix Marseille University, Université de Toulon, CNRS, IM2NP, Marseille, France
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Demirdjian B, Ozerov I, Bedu F, Ranguis A, Henry CR. CO and O 2 Adsorption and CO Oxidation on Pt Nanoparticles by Indirect Nanoplasmonic Sensing. ACS Omega 2021; 6:13398-13405. [PMID: 34056487 PMCID: PMC8158802 DOI: 10.1021/acsomega.1c01487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
We used indirect nanoplasmonic sensing (INPS) coupled with mass spectrometry to study CO and oxygen adsorption as well as CO oxidation, on Pt nanoparticles, in the Torr pressure range. Due to an optimization of the physical parameters of our plasmonic sample, we obtain a highly sensitive probe that can detect gas adsorption of a few hundredths of a monolayer, even with a very low number density of Pt particles. Moreover and for the first time, a similarity is observed between the sign and the evolution of the localized surface plasmon resonance (LSPR) peak shift and the work function measurements for CO and oxygen chemisorption. Controlling the size, shape, and surface density of Pt particles, the turnover frequency (TOF) has also been accurately determined. For similar experimental conditions, the TOF is close to those measured on Pt/oxide powder catalysts and Pt(100) single crystals.
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Abstract
We demonstrate in this work that using nanoplasmonic sensing it is possible to follow the adsorption/desorption of water molecules on gold nanodisks nanofabricated by electron beam lithography. This quantitative method is highly sensitive allowing the detection of a few hundredths of adsorbed monolayer. Disk parameters (height, diameter, and interdisk distance) have been optimized after finite-difference time-domain (FDTD) simulations in order to obtain the best localized surface plasmon resonance (LSPR) signal-to-noise ratio. Finally, we have precisely measured the adsorption kinetics of water on gold as a function of the relative humidity of the surrounding medium.
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Affiliation(s)
| | - Frédéric Bedu
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
| | - Alain Ranguis
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
| | - Igor Ozerov
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
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5
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Gambhire P, Atwell S, Iss C, Bedu F, Ozerov I, Badens C, Helfer E, Viallat A, Charrier A. High Aspect Ratio Sub-Micrometer Channels Using Wet Etching: Application to the Dynamics of Red Blood Cell Transiting through Biomimetic Splenic Slits. Small 2017. [PMID: 28649736 DOI: 10.1002/smll.201700967] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Nanoparticles delivering drugs, disseminating cancer cells, and red blood cells (RBCs) during splenic filtration must deform and pass through the sub-micrometer and high aspect ratio interstices between the endothelial cells lining blood vessels. The dynamics of passage of particles/cells through these slit-like interstices remain poorly understood because the in vitro reproduction of slits with physiological dimensions in devices compatible with optical microscopy observations requires expensive technologies. Here, novel microfluidic PDMS devices containing high aspect ratio slits with sub-micrometer width are molded on silicon masters using a simple, inexpensive, and highly flexible method combining standard UV lithography and anisotropic wet etching. These devices enabled revealing novel modes of deformations of healthy and diseased RBCs squeezing through splenic-like slits (0.6-2 × 5-10 × 1.6-11 µm3 ) under physiological interstitial pressures. At the slit exit, the cytoskeleton of spherocytic RBCs seemed to be detached from the lipid membrane whereas RBCs from healthy donors and patients with sickle cell disease exhibited peculiar tips at their front. These tips disappeared much slower in patients' cells, allowing estimating a threefold increase in RBC cytoplasmic viscosity in sickle cell disease. Measurements of time and rate of RBC sequestration in the slits allowed quantifying the massive trapping of spherocytic RBCs.
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Affiliation(s)
- Priya Gambhire
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Scott Atwell
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Cécile Iss
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Frédéric Bedu
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Igor Ozerov
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Catherine Badens
- Département de Génétique Médicale, Centre de référence thalassemie, La Timone, Assistance Publique des Hôpitaux de Marseille, France, Aix Marseille University, INSERM, GMGF, Marseille, France
| | | | - Annie Viallat
- Aix Marseille University, CNRS, CINAM, Marseille, France
| | - Anne Charrier
- Aix Marseille University, CNRS, CINAM, Marseille, France
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6
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Abstract
The photonic resonances hosted by nanostructures provide vivid colors that can be used as color filters instead of organic colors and pigments in photodetectors and printing technology. Metallic nanostructures have been widely studied due to their ability to sustain surface plasmons that resonantly interact with light. Most of the metallic nanoparticles behave as point-like electric multipoles. However, the needs of an another degree of freedom to tune the color of the photonic nanostructure together with the use of a reliable and cost-effective material are growing. Here, we report a technique to imprint colored images based on silicon nanoparticles that host low-order electric and magnetic Mie resonances. The interplay between the electric and magnetic resonances leads to a large palette of colors. This all-dielectric fabrication technique offers the advantage to use cost-effective, reliable, and sustainable materials to provide vivid color spanning the whole visible spectrum. The interest and potential of this all-dielectric printing technique are highlighted by reproducing at a micrometer scale a Mondrian painting.
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Affiliation(s)
- Julien Proust
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel , 13013 Marseille, France
- Université de Technologie de Troyes, CNRS UMR 6281, Laboratoire de Nanotechnologie et d'Instrumentation Optique, ICD , 10004 Troyes, France
| | - Frédéric Bedu
- AAix Marseille Univ, CNRS, CINAM , 13288 Marseille, France
| | - Bruno Gallas
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut des NanoSciences de Paris, UMR7588 , 75005 Paris, France
| | - Igor Ozerov
- AAix Marseille Univ, CNRS, CINAM , 13288 Marseille, France
| | - Nicolas Bonod
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel , 13013 Marseille, France
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Regmi R, Berthelot J, Winkler PM, Mivelle M, Proust J, Bedu F, Ozerov I, Begou T, Lumeau J, Rigneault H, García-Parajó MF, Bidault S, Wenger J, Bonod N. All-Dielectric Silicon Nanogap Antennas To Enhance the Fluorescence of Single Molecules. Nano Lett 2016; 16:5143-5151. [PMID: 27399057 DOI: 10.1021/acs.nanolett.6b02076] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Plasmonic antennas have a profound impact on nanophotonics as they provide efficient means to manipulate light and enhance light-matter interactions at the nanoscale. However, the large absorption losses found in metals can severely limit the plasmonic applications in the visible spectral range. Here, we demonstrate the effectiveness of an alternative approach using all-dielectric nanoantennas based on silicon dimers to enhance the fluorescence detection of single molecules. The silicon antenna design is optimized to confine the near-field intensity in the 20 nm nanogap and reach a 270-fold fluorescence enhancement in a nanoscale volume of λ(3)/1800 with dielectric materials only. Our conclusions are assessed by combining polarization resolved optical spectroscopy of individual antennas, scanning electron microscopy, numerical simulations, fluorescence lifetime measurements, fluorescence burst analysis, and fluorescence correlation spectroscopy. This work demonstrates that all-silicon nanoantennas are a valid alternative to plasmonic devices for enhanced single molecule fluorescence sensing, with the additional key advantages of reduced nonradiative quenching, negligible heat generation, cost-efficiency, and complementary metal-oxide-semiconductor (CMOS) compatibility.
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Affiliation(s)
- Raju Regmi
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Barcelona, Spain
| | - Johann Berthelot
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - Pamina M Winkler
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Barcelona, Spain
| | - Mathieu Mivelle
- Université Pierre et Marie Curie, CNRS, Institut des NanoSciences de Paris, UMR 7588, 75005 Paris, France
| | - Julien Proust
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | | | - Igor Ozerov
- Aix Marseille Univ, CNRS, CINAM, Marseille, France
| | - Thomas Begou
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - Julien Lumeau
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - Hervé Rigneault
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - María F García-Parajó
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Sébastien Bidault
- ESPCI Paris, PSL Research University, CNRS, INSERM, Institut Langevin, 75005 Paris, France
| | - Jérôme Wenger
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
| | - Nicolas Bonod
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
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Vial B, Commandré M, Demésy G, Nicolet A, Zolla F, Bedu F, Dallaporta H, Tisserand S, Roux L. Transmission enhancement through square coaxial aperture arrays in metallic film: when leaky modes filter infrared light for multispectral imaging. Opt Lett 2014; 39:4723-4726. [PMID: 25121858 DOI: 10.1364/ol.39.004723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The diffractive behavior of arrays of square coaxial apertures in a gold layer is studied. These structures exhibit a resonant transmission enhancement that is used to design tunable bandpass filters for multispectral imaging in the 7-13 μm wavelength range. A modal analysis is used for this design and the study of their spectral features. Thus we show that the resonance peak is due to the excitation of leaky modes of the open photonic structure. Fourier transform infrared (FTIR) spectrophotometry transmission measurements of samples deposited on Si substrate show good agreement with numerical results and demonstrate angular tolerance of up to 30 degrees of the fabricated filters.
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