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Ugodnikov A, Persson H, Simmons CA. Bridging barriers: advances and challenges in modeling biological barriers and measuring barrier integrity in organ-on-chip systems. LAB ON A CHIP 2024; 24:3199-3225. [PMID: 38689569 DOI: 10.1039/d3lc01027a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Biological barriers such as the blood-brain barrier, skin, and intestinal mucosal barrier play key roles in homeostasis, disease physiology, and drug delivery - as such, it is important to create representative in vitro models to improve understanding of barrier biology and serve as tools for therapeutic development. Microfluidic cell culture and organ-on-a-chip (OOC) systems enable barrier modelling with greater physiological fidelity than conventional platforms by mimicking key environmental aspects such as fluid shear, accurate microscale dimensions, mechanical cues, extracellular matrix, and geometrically defined co-culture. As the prevalence of barrier-on-chip models increases, so does the importance of tools that can accurately assess barrier integrity and function without disturbing the carefully engineered microenvironment. In this review, we first provide a background on biological barriers and the physiological features that are emulated through in vitro barrier models. Then, we outline molecular permeability and electrical sensing barrier integrity assessment methods, and the related challenges specific to barrier-on-chip implementation. Finally, we discuss future directions in the field, as well important priorities to consider such as fabrication costs, standardization, and bridging gaps between disciplines and stakeholders.
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Affiliation(s)
- Alisa Ugodnikov
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada.
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Henrik Persson
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada.
| | - Craig A Simmons
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada.
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
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2
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Kuhn J, McDonald A, Mongoin C, Anderson G, Lafeuillade G, Mitchell S, Elfick APD, Bagnaninchi PO, Yiu HHP, Nelson LJ. Non-invasive methods of monitoring Fe 3O 4 magnetic nanoparticle toxicity in human liver HepaRG cells using impedance biosensing and Coherent anti-Stokes Raman spectroscopic (CARS) microscopy. Toxicol Lett 2024; 394:92-101. [PMID: 38428546 DOI: 10.1016/j.toxlet.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 02/09/2024] [Accepted: 02/21/2024] [Indexed: 03/03/2024]
Abstract
Functionalized nanoparticles have been developed for use in nanomedicines for treating life threatening diseases including various cancers. To ensure safe use of these new nanoscale reagents, various assays for biocompatibility or cytotoxicity in vitro using cell lines often serve as preliminary assessments prior to in vivo animal testing. However, many of these assays were designed for soluble, colourless materials and may not be suitable for coloured, non-transparent nanoparticles. Moreover, cell lines are not always representative of mammalian organs in vivo. In this work, we use non-invasive impedance sensing methods with organotypic human liver HepaRG cells as a model to test the toxicity of PEG-Fe3O4 magnetic nanoparticles. We also use Coherent anti-Stokes Raman Spectroscopic (CARS) microscopy to monitor the formation of lipid droplets as a parameter to the adverse effect on the HepaRG cell model. The results were also compared with two commercial testing kits (PrestoBlue and ATP) for cytotoxicity. The results suggested that the HepaRG cell model can be a more realistic model than commercial cell lines while use of impedance monitoring of Fe3O4 nanoparticles circumventing the uncertainties due to colour assays. These methods can play important roles for scientists driving towards the 3Rs principle - Replacement, Reduction and Refinement.
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Affiliation(s)
- Joel Kuhn
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, UK
| | - Alison McDonald
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Edinburgh EH9 3DW
| | - Cyril Mongoin
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Edinburgh EH9 3DW
| | - Graham Anderson
- Centre for Regenerative Medicine. Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Guillemette Lafeuillade
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Edinburgh EH9 3DW
| | - Stephen Mitchell
- School of Biological Sciences, The Daniel Rutherford Building, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - Alistair P D Elfick
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Edinburgh EH9 3DW
| | - Pierre O Bagnaninchi
- Centre for Regenerative Medicine. Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh BioQuarter, 5 Little France Drive, Edinburgh EH16 4UU, UK
| | - Humphrey H P Yiu
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, Scotland EH14 4AS, UK.
| | - Leonard J Nelson
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Edinburgh EH9 3DW.
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Chebotarev O, Ugodnikov A, Simmons CA. Porous Membrane Electrical Cell-Substrate Impedance Spectroscopy for Versatile Assessment of Biological Barriers In Vitro. ACS APPLIED BIO MATERIALS 2024; 7:2000-2011. [PMID: 38447196 DOI: 10.1021/acsabm.4c00114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Cell culture models of endothelial and epithelial barriers typically use porous membrane inserts (e.g., Transwell inserts) as a permeable substrate on which barrier cells are grown, often in coculture with other cell types on the opposite side of the membrane. Current methods to characterize barrier function in porous membrane inserts can disrupt the barrier or provide bulk measurements that cannot isolate barrier cell resistance alone. Electrical cell-substrate impedance sensing (ECIS) addresses these limitations, but its implementation on porous membrane inserts has been limited by costly manufacturing, low sensitivity, and lack of validation for barrier assessment. Here, we present porous membrane ECIS (PM-ECIS), a cost-effective method to adapt ECIS technology to porous substrate-based in vitro models. We demonstrate high fidelity patterning of electrodes on porous membranes that can be incorporated into well plates of a variety of sizes with excellent cell biocompatibility with mono- and coculture set ups. PM-ECIS provided sensitive, real-time measurement of isolated changes in endothelial cell barrier impedance with cell growth and barrier disruption. Barrier function characterized by PM-ECIS resistance correlated well with permeability coefficients obtained from simultaneous molecular tracer permeability assays performed on the same cultures, validating the device. Integration of ECIS into conventional porous cell culture inserts provides a versatile, sensitive, and automated alternative to current methods to measure barrier function in vitro, including molecular tracer assays and transepithelial/endothelial electrical resistance.
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Affiliation(s)
- Oleg Chebotarev
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
| | - Alisa Ugodnikov
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Craig A Simmons
- Translational Biology & Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON M5G 1M1, Canada
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
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Cunha AB, Schuelke C, Mesri A, Ruud SK, Aizenshtadt A, Ferrari G, Heiskanen A, Asif A, Keller SS, Ramos-Moreno T, Kalvøy H, Martínez-Serrano A, Krauss S, Emnéus J, Sampietro M, Martinsen ØG. Development of a Smart Wireless Multisensor Platform for an Optogenetic Brain Implant. SENSORS (BASEL, SWITZERLAND) 2024; 24:575. [PMID: 38257668 PMCID: PMC11154348 DOI: 10.3390/s24020575] [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: 12/13/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024]
Abstract
Implantable cell replacement therapies promise to completely restore the function of neural structures, possibly changing how we currently perceive the onset of neurodegenerative diseases. One of the major clinical hurdles for the routine implementation of stem cell therapies is poor cell retention and survival, demanding the need to better understand these mechanisms while providing precise and scalable approaches to monitor these cell-based therapies in both pre-clinical and clinical scenarios. This poses significant multidisciplinary challenges regarding planning, defining the methodology and requirements, prototyping and different stages of testing. Aiming toward an optogenetic neural stem cell implant controlled by a smart wireless electronic frontend, we show how an iterative development methodology coupled with a modular design philosophy can mitigate some of these challenges. In this study, we present a miniaturized, wireless-controlled, modular multisensor platform with fully interfaced electronics featuring three different modules: an impedance analyzer, a potentiostat and an optical stimulator. We show the application of the platform for electrical impedance spectroscopy-based cell monitoring, optical stimulation to induce dopamine release from optogenetically modified neurons and a potentiostat for cyclic voltammetry and amperometric detection of dopamine release. The multisensor platform is designed to be used as an opto-electric headstage for future in vivo animal experiments.
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Affiliation(s)
- André B. Cunha
- Department of Physics, University of Oslo, Sem Sælands vei 24, 0371 Oslo, Norway; (A.B.C.); (C.S.); (S.K.R.)
| | - Christin Schuelke
- Department of Physics, University of Oslo, Sem Sælands vei 24, 0371 Oslo, Norway; (A.B.C.); (C.S.); (S.K.R.)
- Hybrid Technology Hub—Centre of Excellence, Institute of Basic Medical Sciences, P.O. Box 1110 Blindern, 0317 Oslo, Norway; (A.A.); (S.K.)
| | - Alireza Mesri
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milan, Italy; (A.M.); (G.F.); (M.S.)
| | - Simen K. Ruud
- Department of Physics, University of Oslo, Sem Sælands vei 24, 0371 Oslo, Norway; (A.B.C.); (C.S.); (S.K.R.)
| | - Aleksandra Aizenshtadt
- Hybrid Technology Hub—Centre of Excellence, Institute of Basic Medical Sciences, P.O. Box 1110 Blindern, 0317 Oslo, Norway; (A.A.); (S.K.)
| | - Giorgio Ferrari
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milan, Italy; (A.M.); (G.F.); (M.S.)
| | - Arto Heiskanen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.H.); (A.A.); (J.E.)
| | - Afia Asif
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.H.); (A.A.); (J.E.)
| | - Stephan S. Keller
- National Centre for Nano Fabrication and Characterization, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Tania Ramos-Moreno
- Lund Stem Cell Center, Division of Neurosurgery, Department of Clinical Sciences, Faculty of Medicine, Lund University, 22184 Lund, Sweden;
| | - Håvard Kalvøy
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway;
| | - Alberto Martínez-Serrano
- Department of Molecular Neurobiology, Center of Molecular Biology ‘Severo Ochoa’, Universidad Autónoma de Madrid, Calle Nicolás Cabrera 1, 28049 Madrid, Spain;
| | - Stefan Krauss
- Hybrid Technology Hub—Centre of Excellence, Institute of Basic Medical Sciences, P.O. Box 1110 Blindern, 0317 Oslo, Norway; (A.A.); (S.K.)
- Department of Immunology and Transfusion Medicine, Oslo University Hospital, P.O. Box 4950, 0424 Oslo, Norway
| | - Jenny Emnéus
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.H.); (A.A.); (J.E.)
| | - Marco Sampietro
- Department of Electronics Information and Bioengineering, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milan, Italy; (A.M.); (G.F.); (M.S.)
| | - Ørjan G. Martinsen
- Department of Physics, University of Oslo, Sem Sælands vei 24, 0371 Oslo, Norway; (A.B.C.); (C.S.); (S.K.R.)
- Department of Clinical and Biomedical Engineering, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway;
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Kampouraki ZC, Petala M, Zacharias K, Konstantinidis A, Zabulis X, Karamaounas P, Kostoglou M, Karapantsios TD. Highly sensitive resistance spectroscopy technique for online monitoring of biofilm growth on metallic surfaces. ENVIRONMENTAL RESEARCH 2024; 240:117401. [PMID: 37918765 DOI: 10.1016/j.envres.2023.117401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/02/2023] [Accepted: 10/11/2023] [Indexed: 11/04/2023]
Abstract
Online techniques for monitoring biofilm formation and evolution are limited, especially as regards its application in flowing water systems. This is chiefly due to the absence of efficient non-destructive and non-invasive sensing methods. In this study, a sensitive electrical resistance spectroscopy technique is developed to monitor non-invasively and in real time the growth of biofilms over metallic surfaces inside water flow systems. To this aim, Pseudomonas fluorescens strain is used for biofilm development lasting 72 h in a laboratory-scale test channel of orthogonal cross section. Biofilm development corresponds to a progressively increasing coverage of the metallic surface area up to full coverage and a progressively increasing thickness. Biofilm development is registered by continuous recording of electrical impedance signals (time series). Proper configuration and tuning of the electronics promote the resistive contribution to the signal whereas careful grounding diminishes electrical interferences and yields superb sensing sensitivity. An increase of relative electrical resistance of around 15% is noticed in 72 h flow experiments which is attributed to both an increase of metallic surface area coverage and an increase of biofilm thickness. An independent estimation of these quantities using imaging tools and microscopy analysis, indicates that full coverage of the metallic surface occurs after only 48 h of the flow experiment, whereas biofilm thickness increases gradually along the entire 72 h of the experiment. Cross-examination of electrical signals with biofilm characteristics (metallic surface coverage and biofilm thickness) reveals that, qualitatively speaking, electrical signals are rather more sensitive to metallic surface coverage than biofilm thickness.
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Affiliation(s)
- Zoi Christina Kampouraki
- Division of Chemical Technology, School of Chemistry, Aristotle University of Thessaloniki, University Box 116, 541 24, Thessaloniki, Greece
| | - Maria Petala
- Department of Civil Engineering, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Konstantinos Zacharias
- Division of Chemical Technology, School of Chemistry, Aristotle University of Thessaloniki, University Box 116, 541 24, Thessaloniki, Greece
| | - Avraam Konstantinidis
- Laboratory of Engineering Mechanics, School of Civil Engineering, Aristotle University of Thessaloniki, GR, 541 24, Thessaloniki, Greece
| | - Xenophon Zabulis
- Institute of Computer Science, Foundation for Research and Technology, 711 10, Heraklion, Greece
| | - Polykarpos Karamaounas
- Institute of Computer Science, Foundation for Research and Technology, 711 10, Heraklion, Greece
| | - Margaritis Kostoglou
- Division of Chemical Technology, School of Chemistry, Aristotle University of Thessaloniki, University Box 116, 541 24, Thessaloniki, Greece
| | - Thodoris D Karapantsios
- Division of Chemical Technology, School of Chemistry, Aristotle University of Thessaloniki, University Box 116, 541 24, Thessaloniki, Greece.
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Yun WS, Cho H, Jeon SI, Lim DK, Kim K. Fluorescence-Based Mono- and Multimodal Imaging for In Vivo Tracking of Mesenchymal Stem Cells. Biomolecules 2023; 13:1787. [PMID: 38136656 PMCID: PMC10742164 DOI: 10.3390/biom13121787] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/01/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
The advancement of stem cell therapy has offered transformative therapeutic outcomes for a wide array of diseases over the past decades. Consequently, stem cell tracking has become significant in revealing the mechanisms of action and ensuring safe and effective treatments. Fluorescence stands out as a promising choice for stem cell tracking due to its myriad advantages, including high resolution, real-time monitoring, and multi-fluorescence detection. Furthermore, combining fluorescence with other tracking modalities-such as bioluminescence imaging (BLI), positron emission tomography (PET), photoacoustic (PA), computed tomography (CT), and magnetic resonance (MR)-can address the limitations of single fluorescence detection. This review initially introduces stem cell tracking using fluorescence imaging, detailing various labeling strategies such as green fluorescence protein (GFP) tagging, fluorescence dye labeling, and nanoparticle uptake. Subsequently, we present several combinations of strategies for efficient and precise detection.
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Affiliation(s)
- Wan Su Yun
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea; (W.S.Y.); (D.-K.L.)
| | - Hanhee Cho
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Woman’s University, Seoul 03760, Republic of Korea; (H.C.); (S.I.J.)
| | - Seong Ik Jeon
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Woman’s University, Seoul 03760, Republic of Korea; (H.C.); (S.I.J.)
| | - Dong-Kwon Lim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea; (W.S.Y.); (D.-K.L.)
| | - Kwangmeyung Kim
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Woman’s University, Seoul 03760, Republic of Korea; (H.C.); (S.I.J.)
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Combining Electrostimulation with Impedance Sensing to Promote and Track Osteogenesis within a Titanium Implant. Biomedicines 2023; 11:biomedicines11030697. [PMID: 36979676 PMCID: PMC10045247 DOI: 10.3390/biomedicines11030697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/03/2023] [Accepted: 02/17/2023] [Indexed: 03/02/2023] Open
Abstract
(1) Background: Electrical stimulation is a promising alternative to promote bone fracture healing but with the limitation of tracking the osteogenesis progress in vivo. To overcome this issue, we present an opportunity to combine the electrical stimulation of a commercial titanium implant, which promotes osteogenesis within the fracture, with a real-time readout of the osteogenic progress by impedance sensing. This makes it possible to adjust the electrical stimulation modalities to the individual patient’s fracture healing process. (2) Methods: In detail, osteogenic differentiation of several cell types was monitored under continuous or pulsatile electrical stimulation at 0.7 V AC/20 Hz for at least seven days on a titanium implant by electric cell-substrate impedance sensing (ECIS). For control, chemical induction of osteogenic differentiation was induced. (3) Results: The most significant challenge was to discriminate impedance changes caused by proliferation events from those initiated by osteogenic differentiation. This discrimination was achieved by remodeling the impedance parameter Alpha (α), which increases over time for pulsatile electrically stimulated stem cells. Boosted α-values were accompanied by an increased formation of actin stress fibers and a reduced expression of the focal adhesion kinase in the cell periphery; morphological alterations known to occur during osteogenesis. (4) Conclusions: This work provided the basis for developing an effective fracture therapy device, which can induce osteogenesis on the one hand, and would allow us to monitor the induction process on the other hand.
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Ismaiel E, Zátonyi A, Fekete Z. Dimensionality Reduction and Prediction of Impedance Data of Biointerface. SENSORS (BASEL, SWITZERLAND) 2022; 22:4191. [PMID: 35684818 PMCID: PMC9185537 DOI: 10.3390/s22114191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Electrochemical impedance spectroscopy (EIS) is the golden tool for many emerging biomedical applications that describes the behavior, stability, and long-term durability of physical interfaces in a specific range of frequency. Impedance measurements of any biointerface during in vivo and clinical applications could be used for assessing long-term biopotential measurements and diagnostic purposes. In this paper, a novel approach to predicting impedance behavior is presented and consists of a dimensional reduction procedure by converting EIS data over many days of an experiment into a one-dimensional sequence of values using a novel formula called day factor (DF) and then using a long short-term memory (LSTM) network to predict the future behavior of the DF. Three neural interfaces of different material compositions with long-term in vitro aging tests were used to validate the proposed approach. The results showed good accuracy in predicting the quantitative change in the impedance behavior (i.e., higher than 75%), in addition to good prediction of the similarity between the actual and the predicted DF signals, which expresses the impedance fluctuations among soaking days. The DF approach showed a lower computational time and algorithmic complexity compared with principal component analysis (PCA) and provided the ability to involve or emphasize several important frequencies or impedance range in a more flexible way.
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Navarro P, Olmo A, Giner M, Rodríguez-Albelo M, Rodríguez Á, Torres Y. Electrical Impedance of Surface Modified Porous Titanium Implants with Femtosecond Laser. MATERIALS 2022; 15:ma15020461. [PMID: 35057181 PMCID: PMC8779557 DOI: 10.3390/ma15020461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 01/25/2023]
Abstract
The chemical composition and surface topography of titanium implants are essential to improve implant osseointegration. The present work studies a non-invasive alternative of electrical impedance spectroscopy for the characterization of the macroporosity inherent to the manufacturing process and the effect of the surface treatment with femtosecond laser of titanium discs. Osteoblasts cell culture growths on the titanium surfaces of the laser-treated discs were also studied with this method. The measurements obtained showed that the femtosecond laser treatment of the samples and cell culture produced a significant increase (around 50%) in the absolute value of the electrical impedance module, which could be characterized in a wide range of frequencies (being more relevant at 500 MHz). Results have revealed the potential of this measurement technique, in terms of advantages, in comparison to tiresome and expensive techniques, allowing semi-quantitatively relating impedance measurements to porosity content, as well as detecting the effect of surface modification, generated by laser treatment and cell culture.
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Affiliation(s)
- Paula Navarro
- Departamento de Tecnología Electrónica, Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain;
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
| | - Alberto Olmo
- Departamento de Tecnología Electrónica, Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain;
- Instituto de Microelectrónica de Sevilla, IMSE-CNM (CSIC, Universidad de Sevilla), Av. Américo Vespucio s/n, 41092 Sevilla, Spain
- Correspondence: ; Tel.: +34-954556835
| | - Mercè Giner
- Departamento de Citología e Histología Normal y Patológica, Universidad de Sevilla, Av. Doctor Fedriani s/n, 41009 Sevilla, Spain;
| | - Marleny Rodríguez-Albelo
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
| | - Ángel Rodríguez
- Escuela Politécnica Superior, Universidad da Coruña, Calle Mendizábal s/n, 15403 Ferrol, Spain;
| | - Yadir Torres
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Calle Virgen de África 7, 41011 Seville, Spain; (M.R.-A.); (Y.T.)
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Kabanov D, Klimovic S, Rotrekl V, Pesl M, Pribyl J. Atomic Force Spectroscopy is a promising tool to study contractile properties of cardiac cells. Micron 2021; 155:103199. [DOI: 10.1016/j.micron.2021.103199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/15/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
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11
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Morcelles KF, Bertemes-Filho P. Hardware for cell culture electrical impedance tomography: A critical review. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:104704. [PMID: 34717415 DOI: 10.1063/5.0053707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Human cell cultures are powerful laboratory tools for biological models of diseases, drug development, and tissue engineering. However, the success of biological experiments often depends on real-time monitoring of the culture state. Conventional culture evaluation methods consist of end-point laborious techniques, not capable of real-time operation and not suitable for three-dimensional cultures. Electrical Impedance Tomography (EIT) is a non-invasive imaging technique with high potential to be used in cell culture monitoring due to its biocompatibility, non-invasiveness, high temporal resolution, compact hardware, automatic operation, and high throughput. This review approaches the different hardware strategies for cell culture EIT that are presented in the literature, discussing the main components of the measurement system: excitation circuit, voltage/current sensing, switching stage, signal specifications, electrode configurations, measurement protocols, and calibration strategies. The different approaches are qualitatively discussed and compared, and design guidelines are proposed.
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Affiliation(s)
- K F Morcelles
- Department of Electrical Engineering, Santa Catarina State University, Joinville 89219-710, Brazil
| | - P Bertemes-Filho
- Department of Electrical Engineering, Santa Catarina State University, Joinville 89219-710, Brazil
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12
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Fernandez-Checa JC, Bagnaninchi P, Ye H, Sancho-Bru P, Falcon-Perez JM, Royo F, Garcia-Ruiz C, Konu O, Miranda J, Lunov O, Dejneka A, Elfick A, McDonald A, Sullivan GJ, Aithal GP, Lucena MI, Andrade RJ, Fromenty B, Kranendonk M, Cubero FJ, Nelson LJ. Advanced preclinical models for evaluation of drug-induced liver injury - consensus statement by the European Drug-Induced Liver Injury Network [PRO-EURO-DILI-NET]. J Hepatol 2021; 75:935-959. [PMID: 34171436 DOI: 10.1016/j.jhep.2021.06.021] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/02/2021] [Accepted: 06/11/2021] [Indexed: 02/06/2023]
Abstract
Drug-induced liver injury (DILI) is a major cause of acute liver failure (ALF) and one of the leading indications for liver transplantation in Western societies. Given the wide use of both prescribed and over the counter drugs, DILI has become a major health issue for which there is a pressing need to find novel and effective therapies. Although significant progress has been made in understanding the molecular mechanisms underlying DILI, our incomplete knowledge of its pathogenesis and inability to predict DILI is largely due to both discordance between human and animal DILI in preclinical drug development and a lack of models that faithfully recapitulate complex pathophysiological features of human DILI. This is exemplified by the hepatotoxicity of acetaminophen (APAP) overdose, a major cause of ALF because of its extensive worldwide use as an analgesic. Despite intensive efforts utilising current animal and in vitro models, the mechanisms involved in the hepatotoxicity of APAP are still not fully understood. In this expert Consensus Statement, which is endorsed by the European Drug-Induced Liver Injury Network, we aim to facilitate and outline clinically impactful discoveries by detailing the requirements for more realistic human-based systems to assess hepatotoxicity and guide future drug safety testing. We present novel insights and discuss major players in APAP pathophysiology, and describe emerging in vitro and in vivo pre-clinical models, as well as advanced imaging and in silico technologies, which may improve prediction of clinical outcomes of DILI.
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Affiliation(s)
- Jose C Fernandez-Checa
- Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), Consejo Superior Investigaciones Científicas (CSIC), Spain; Liver Unit, Hospital Clínic, Barcelona, Spain; Instituto Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; USC Research Center for ALPD, Keck School of Medicine, Los Angeles, United States, CA 90033.
| | - Pierre Bagnaninchi
- Center for Regenerative Medicine, Institute for Regenerative and Repair, The University of Edinburgh, Edinburgh, UK, EH16 4UU; School of Engineering, Institute for Bioengineering, The University of Edinburgh, Faraday Building, Colin Maclaurin Road, EH9 3 DW, Scotland, UK
| | - Hui Ye
- Department of Immunology, Ophthalmology & ENT, Complutense University School of Medicine, 28040 Madrid, Spain; Health Research Institute Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - Pau Sancho-Bru
- Instituto Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain
| | - Juan M Falcon-Perez
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; Exosomes Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Bizkaia, 48160, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Bizkaia, 48015, Spain
| | - Felix Royo
- Exosomes Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio, Bizkaia, 48160, Spain
| | - Carmen Garcia-Ruiz
- Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), Consejo Superior Investigaciones Científicas (CSIC), Spain; Liver Unit, Hospital Clínic, Barcelona, Spain; Instituto Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; USC Research Center for ALPD, Keck School of Medicine, Los Angeles, United States, CA 90033
| | - Ozlen Konu
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey; Interdisciplinary Neuroscience Program, Bilkent University, Ankara, Turkey; UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Joana Miranda
- Research Institute for iMedicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal
| | - Oleg Lunov
- Department of Optical and Biophysical Systems, Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Alexandr Dejneka
- Department of Optical and Biophysical Systems, Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Alistair Elfick
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh EH8 3DW, UK
| | - Alison McDonald
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh EH8 3DW, UK
| | - Gareth J Sullivan
- University of Oslo and the Oslo University Hospital, Oslo, Norway; Hybrid Technology Hub-Center of Excellence, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway; Department of Pediatric Research, Oslo University Hosptial, Oslo, Norway
| | - Guruprasad P Aithal
- National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospital NHS Trust and University of Nottingham, Nottingham, UK
| | - M Isabel Lucena
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; Servicio de Farmacología Clínica, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Universitario Virgen de la Victoria, UICEC SCReN, Universidad de Málaga, Málaga, Spain
| | - Raul J Andrade
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; Unidad de Gestión Clínica de Enfermedades Digestivas, Instituto de Investigación, Biomédica de Málaga-IBIMA, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, Malaga, Spain
| | - Bernard Fromenty
- INSERM, Univ Rennes, INRAE, Institut NUMECAN (Nutrition Metabolisms and Cancer) UMR_A 1341, UMR_S 1241, F-35000 Rennes, France
| | - Michel Kranendonk
- Center for Toxicogenomics and Human Health (ToxOmics), Genetics, Oncology and Human Toxicology, NOVA Medical School, Faculty of Medical Sciences, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Francisco Javier Cubero
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, 28029, Spain; Department of Immunology, Ophthalmology & ENT, Complutense University School of Medicine, 28040 Madrid, Spain; Health Research Institute Gregorio Marañón (IiSGM), 28007 Madrid, Spain
| | - Leonard J Nelson
- Center for Regenerative Medicine, Institute for Regenerative and Repair, The University of Edinburgh, Edinburgh, UK, EH16 4UU; School of Engineering, Institute for Bioengineering, The University of Edinburgh, Faraday Building, Colin Maclaurin Road, EH9 3 DW, Scotland, UK; Institute of Biological Chemistry, Biophysics and Bioengineering (IB3), School of Engineering and Physical Sciences (EPS), Heriot-Watt University, Edinburgh EH12 2AS, Scotland, UK.
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13
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Ahn J, Jung KB, Kwon O, Choi MS, Ahn JH, Han HY, Jung CR, Yoon S, Son MY, Oh JH. Impedance Measurement System for Assessing the Barrier Integrity of Three-Dimensional Human Intestinal Organoids. Anal Chem 2021; 93:8826-8834. [PMID: 34132523 DOI: 10.1021/acs.analchem.1c00655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Human pluripotent stem cell (hPSC)-derived intestinal organoids (HIOs) hold unprecedented promise for basic biology and translational applications. However, developing a quantitative method to evaluate the epithelial cell membrane integrity of HIOs as an in vitro intestinal barrier model is a major challenge because of their complex three-dimensional (3D) structure. In this study, we developed an impedance system to measure the change in electrical resistance of 3D HIOs depending on the integrity of the intestinal epithelial cell membrane, which can reflect functionality and maturity. The expression of intestinal maturation- and tight junction-related markers was significantly higher in HIOs matured in vitro by treatment with IL-2 than in control HIOs. Analysis of gap junction size indicated that mature HIOs have greater integrity, with approximately 30% more compact gaps than immature HIOs. We designed a multi-microchannel system controlled by the inhalation pressure where the HIO is loaded, which enhances the stability and sensitivity of the impedance signal. We demonstrated the applicability of the impedance system by showing the difference in resistance between control and mature HIOs, reflecting the expression of tight junction proteins and their maturation status. We also validated the impedance system by monitoring its resistance in real time during junctional damage to HIOs induced by a digestive agent. In summary, we suggest a quantitative method to directly quantify the physiological changes in complex 3D organoid structures based on impedance spectroscopy, which can be applied to noninvasively monitor live cells and therefore enable their use in subsequent experiments.
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Affiliation(s)
- Jaehwan Ahn
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Kwang Bo Jung
- Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Ohman Kwon
- Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Mi-Sun Choi
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Jun-Ho Ahn
- Bio Medical Research Center, Bio Medical & Health Division, Korea Testing Laboratory (KTL), Seoul 08389, Republic of Korea
| | - Hyoung-Yun Han
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Cho-Rok Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Seokjoo Yoon
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
| | - Mi-Young Son
- Stem Cell Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Jung-Hwa Oh
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon 34114, Republic of Korea
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14
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Ilyas AO, Alam MK, Musah JD, Yang M, Lam YW, Roy VAL, Lau C. Investigation on the Direct and Bystander Effects in HeLa Cells Exposed to Very Low α-Radiation Using Electrical Impedance Measurement. ACS OMEGA 2021; 6:13995-14003. [PMID: 34124424 PMCID: PMC8190804 DOI: 10.1021/acsomega.0c05888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
The impact of radiation-induced bystander effect (RIBE) is still not well understood in radiotherapy. RIBEs are biological effects expressed by nonirradiated cells near or far from the irradiated cells. Most radiological studies on cancer cells have been based on biochemical characterization. However, biophysical investigation with label-free techniques to analyze and compare the direct irradiation effect and RIBE has lagged. In this work, we employed an electrical cell-indium tin oxide (ITO) substrate impedance system (ECIIS) as a bioimpedance sensor to evaluate the HeLa cells' response. The bioimpedance of untreated/nonirradiated HeLa (N-HeLa) cells, α-particle (Am-241)-irradiated HeLa (I-HeLa) cells, and bystander HeLa (B-HeLa) cells exposed to media from I-HeLa cells was monitored with a sampling interval of 8 s over a period of 24 h. Also, we imaged the cells at times where impedance changes were observed. Different radiation doses (0.5 cGy, 1.2 cGy, and 1.7 cGy) were used to investigate I-HeLa and B-HeLa cells' radiation-dose-dependence. By analyzing the changes in absolute impedance and cell size/number with time, compared to N-HeLa cells, B-HeLa cells mimicked the I-HeLa cells' damage and modification of proliferation rate. Contrary to the irradiated cells, the bystander cells' damage rate and proliferation rate enhancements have an inverse radiation-dose-response. Also, we report multiple RIBEs in HeLa cells in a single measurement and provide crucial insights into the RIBE mechanism without any labeling procedure. Unambiguously, our results have shown that the time-dependent control of RIBE is important during α-radiation-based radiotherapy of HeLa cells.
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Affiliation(s)
- AbdulMojeed O. Ilyas
- Department
of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
- Department
of Physics, Federal University Oye-Ekiti, Oye-Ekiti, Ekiti State 3600001, Nigeria
| | - Md Kowsar Alam
- Department
of Biomedical Sciences, City University
of Hong Kong, Kowloon 999077, Hong Kong SAR, China
- Department
of Physics, University of Chittagong, Chittagong 4331, Bangladesh
| | - Jamal-Deen Musah
- Department
of Material Science and Engineering and State Key Laboratory of Terahertz
and Millimeter Waves, City University of
Hong Kong, Kowloon 999077, Hong Kong SAR, China
| | - Mengsu Yang
- Department
of Biomedical Sciences, City University
of Hong Kong, Kowloon 999077, Hong Kong SAR, China
| | - Yun Wah Lam
- Department
of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
| | - Vellaisamy A. L. Roy
- James
Watt School of Engineering, University of
Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Condon Lau
- Department
of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
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15
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Otagiri R, Kawai H, Takatsuka M, Shinyashiki N, Ito A, Ikeguchi R, Aoyama T. Interfacial polarization of in vivo rat sciatic nerve with crush injury studied via broadband dielectric spectroscopy. PLoS One 2021; 16:e0252589. [PMID: 34077459 PMCID: PMC8171940 DOI: 10.1371/journal.pone.0252589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/18/2021] [Indexed: 12/02/2022] Open
Abstract
Electrical stimulation is one of the candidates for elongation-driven regeneration of damaged peripheral nerves. Different organs and tissues have an inherent cell structure and size. This leads to variation in the tissue-specific electrical properties of the frequency of interfacial polarization. Although nervous tissues have a membrane potential, the electrical reaction inside these tissues following electrical stimulation from outside remains unexplored. Furthermore, the pathophysiological reaction of an injured nerve is unclear. Here, we investigated the electrical reaction of injured and non-injured rat sciatic nerves via broadband dielectric spectroscopy. Crush injured and non-injured sciatic nerves of six 12-week-old male Lewis rats were used, 6 days after infliction of the injury. Both sides of the nerves (with and without injury) were exposed, and impedance measurements were performed at room temperature (approximately 25°C) at frequencies ranging from 100 mHz to 5.5 MHz and electric potential ranging from 0.100 to 1.00 V. The measured interfacial polarization potentially originated from the polarization by ion transport around nerve membranes at frequencies between 3.2 kHz and 1.6 MHz. The polarization strength of the injured nerves was smaller than that of non-injured nerves. However, the difference in polarization between injured and non-injured nerves might be caused by inflammation and edema. The suitable frequency range of the interfacial polarization can be expected to be critical for electrical stimulation of injured peripheral nerves.
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Affiliation(s)
- Risa Otagiri
- Course of Physics, Graduate School of Science, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Hideki Kawai
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Masanobu Takatsuka
- Course of Science and Technology, Graduate School of Science and Technology, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Naoki Shinyashiki
- Department of Physics, School of Science, Tokai University, Hiratsuka City, Kanagawa, Japan
| | - Akira Ito
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
| | - Ryosuke Ikeguchi
- Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto City, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Physical Therapy, Human Health Sciences, Graduate school of Medicine, Kyoto University, Kyoto City, Kyoto, Japan
- * E-mail:
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16
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Ilyas AM, Alam MK, Musah JD, Yang M, Roy VAL, Lam YW, Lau C. CHO cell dysfunction due to radiation-induced bystander signals observed by real-time electrical impedance measurement. Biosens Bioelectron 2021; 181:113142. [PMID: 33752028 DOI: 10.1016/j.bios.2021.113142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/22/2021] [Accepted: 03/01/2021] [Indexed: 11/30/2022]
Abstract
Radiation-induced bystander effects (RIBE) have raised many concerns about radiation safety and protection. In RIBE, unirradiated cells receive signals from irradiated cells and exhibit irradiation effects. Until now, most RIBE studies have been based on morphological and biochemical characterization. However, research on the impact of RIBE on biophysical properties of cells has been lagging. Non-invasive indium tin oxide (ITO)-based impedance systems have been used as bioimpedance sensors for monitoring cell behaviors. This powerful technique has not been applied to RIBE research. In this work, we employed an electrical cell-ITO substrate impedance system (ECIIS) to study the RIBE on Chinese hamster ovary (CHO) cells. The bioimpedance of bystander CHO cells (BCHO), alpha(α)-particle (Am-241) irradiated CHO (ICHO), and untreated/unirradiated CHO (UCHO) cells were monitored with a sampling interval of 8 s over a period of 24 h. Media from ICHO cells exposed to different radiation doses (0.3 nGy, 0.5 nGy, and 0.7 nGy) were used to investigate the radiation dose dependence of BCHO cells' impedance. In parallel, we imaged the cells at times where impedance changes were observed. By analyzing the changes in absolute impedance and cell size/cell number with time, we observed that BCHO cells mimicked ICHO cells in terms of modification in cell morphology and proliferation rate. Furthermore, these effects appeared to be time-dependent and inversely proportional to the radiation dose. Hence, this approach allows a label-free study of cellular responses to RIBE with high sensitivity and temporal resolution and can provide crucial insights into the RIBE mechanism.
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Affiliation(s)
- A M Ilyas
- Department of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong, China; Department of Physics, Federal University Oye-Ekiti, Ekiti State 3600001, Nigeria.
| | - Md Kowsar Alam
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, Hong Kong, China; Department of Physics, University of Chittagong, Chittagong 4331, Bangladesh
| | - Jamal-Deen Musah
- Department of Material Science and Engineering, State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon 999077, Hong Kong, China
| | - Mengsu Yang
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon 999077, Hong Kong, China
| | - Vellaisamy A L Roy
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Yun Wah Lam
- Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong, China
| | - Condon Lau
- Department of Physics, City University of Hong Kong, Kowloon 999077, Hong Kong, China
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17
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Ilyas AMO, Alam MK, Musah JD, Saw LO, Venkatesh S, Yeung CC, Yang M, Vellaisamy ALR, Lau C. Development of a carboxyl-terminated indium tin oxide electrode for improving cell adhesion and facilitating low noise, real-time impedance measurements. Am J Physiol Cell Physiol 2021; 320:C974-C986. [PMID: 33689477 DOI: 10.1152/ajpcell.00537.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The working electrode's surface property is crucial to cell adhesion and signal collection in electric cell-substrate impedance sensing (ECIS). To date, the indium tin oxide (ITO)-based working electrode is of interest in ECIS study due to its high transparency and biocompatibility. Of great concern is the impedance signal loss, distortion, and data interpretation conflict profoundly created by the movement of multiple cells during ECIS study. Here, a carboxyl-terminated ITO substrate was prepared by stepwise surface amino silanization, with N-hydroxy succinimide (NHS) and 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride (EDC) treatment, respectively. We investigated the stepwise changes in the property of the treated ITO, cell-substrate adhesion, collective cell mobility, and time course of change in absolute impedance from multiple Chinese hamster ovary (CHO) cells [(Δt-Δ|Z|)CELLS]. The carboxyl-terminated ITO substrate with a surface roughness of 6.37 nm shows enhanced conductivity, 75% visible light transparency, improved cell adherence, reduced collective cell migration speed by approximately twofold, and diminished signal distortion in the [(Δt-Δ|Z|)CELLS]. Thus, our study provides an ITO surface-treatment strategy to reduce multiple cell movement effects and to obtain essential cell information from the ECIS study of multiple cells through undistorted (Δt-Δ|Z|)CELLS.
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Affiliation(s)
- A M Olabisi Ilyas
- Department of Physics, City University of Hong Kong, Kowloon, Special Administrative Region of China.,Department of Physics, Federal University Oye-Ekiti, Oye-Ekiti, Nigeria
| | - Md Kowsar Alam
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Special Administrative Region of China.,Department of Physics, University of Chittagong, Chittagong, Bangladesh
| | - Jamal-Deen Musah
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Lin Oo Saw
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Shishir Venkatesh
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Chi-Chung Yeung
- Department of Chemistry, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Mengsu Yang
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - A L R Vellaisamy
- James Watt School of Engineering, University of Glasgow, Glasgow, United Kingdom
| | - Condon Lau
- Department of Physics, City University of Hong Kong, Kowloon, Special Administrative Region of China
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18
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Gintant G, Kaushik EP, Feaster T, Stoelzle-Feix S, Kanda Y, Osada T, Smith G, Czysz K, Kettenhofen R, Lu HR, Cai B, Shi H, Herron TJ, Dang Q, Burton F, Pang L, Traebert M, Abassi Y, Pierson JB, Blinova K. Repolarization studies using human stem cell-derived cardiomyocytes: Validation studies and best practice recommendations. Regul Toxicol Pharmacol 2020; 117:104756. [DOI: 10.1016/j.yrtph.2020.104756] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/24/2020] [Accepted: 07/31/2020] [Indexed: 12/20/2022]
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19
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Haring AP, Jiang S, Barron C, Thompson EG, Sontheimer H, He JQ, Jia X, Johnson BN. 3D bioprinting using hollow multifunctional fiber impedimetric sensors. Biofabrication 2020; 12:035026. [PMID: 32434163 DOI: 10.1088/1758-5090/ab94d0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
3D bioprinting is an emerging biofabrication process for the production of adherent cell-based products, including engineered tissues and foods. While process innovations are rapidly occurring in the area of process monitoring, which can improve fundamental understanding of process-structure-property relations as well as product quality by closed-loop control techniques, in-line sensing of the bioink composition remains a challenge. Here, we report that hollow multifunctional fibers enable in-line impedimetric sensing of bioink composition and exhibit selectivity for real-time classification of cell type, viability, and state of differentiation during bioprinting. Continuous monitoring of the fiber impedance magnitude and phase angle response from 102 to 106 Hz during microextrusion 3D bioprinting enabled compositional and quality analysis of alginate bioinks that contained fibroblasts, neurons, or mouse embryonic stem cells (mESCs). Fiber impedimetric responses associated with the bioinks that contained differentiated mESCs were consistent with differentiation marker expression characterized by immunocytochemistry. 3D bioprinting through hollow multifunctional fiber impedimetric sensors enabled classification of stem cells as stable or randomly differentiated populations. This work reports an advance in monitoring 3D bioprinting processes in terms of in-line sensor-based bioink compositional analysis using fiber technology and provides a non-invasive sensing platform for achieving future quality-controlled bioprinted tissues and injectable stem-cell therapies.
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Affiliation(s)
- Alexander P Haring
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA 24061, United States of America. Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States of America. These authors contributed equally to this work
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20
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Tonello S, Bianchetti A, Braga S, Almici C, Marini M, Piovani G, Guindani M, Dey K, Sartore L, Re F, Russo D, Cantù E, Francesco Lopomo N, Serpelloni M, Sardini E. Impedance-Based Monitoring of Mesenchymal Stromal Cell Three-Dimensional Proliferation Using Aerosol Jet Printed Sensors: A Tissue Engineering Application. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2231. [PMID: 32413993 PMCID: PMC7287852 DOI: 10.3390/ma13102231] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/10/2020] [Accepted: 05/11/2020] [Indexed: 12/12/2022]
Abstract
One of the main hurdles to improving scaffolds for regenerative medicine is the development of non-invasive methods to monitor cell proliferation within three-dimensional environments. Recently, an electrical impedance-based approach has been identified as promising for three-dimensional proliferation assays. A low-cost impedance-based solution, easily integrable with multi-well plates, is here presented. Sensors were developed using biocompatible carbon-based ink on foldable polyimide substrates by means of a novel aerosol jet printing technique. The setup was tested to monitor the proliferation of human mesenchymal stromal cells into previously validated gelatin-chitosan hybrid hydrogel scaffolds. Reliability of the methodology was assessed comparing variations of the electrical impedance parameters with the outcomes of enzymatic proliferation assay. Results obtained showed a magnitude increase and a phase angle decrease at 4 kHz (maximum of 2.5 kΩ and -9 degrees) and an exponential increase of the modeled resistance and capacitance components due to the cell proliferation (maximum of 1.5 kΩ and 200 nF). A statistically significant relationship with enzymatic assay outcomes could be detected for both phase angle and electric model parameters. Overall, these findings support the potentiality of this non-invasive approach for continuous monitoring of scaffold-based cultures, being also promising in the perspective of optimizing the scaffold-culture system.
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Affiliation(s)
- Sarah Tonello
- Department of Information Engineering, University of Padova, 35131 Padua, Italy
| | - Andrea Bianchetti
- Laboratory for Stem Cells Manipulation and Cryopreservation, Department of Transfusion Medicine, ASST Spedali Civili, 25123 Brescia, Italy; (A.B.); (S.B.); (C.A.); (M.M.)
| | - Simona Braga
- Laboratory for Stem Cells Manipulation and Cryopreservation, Department of Transfusion Medicine, ASST Spedali Civili, 25123 Brescia, Italy; (A.B.); (S.B.); (C.A.); (M.M.)
| | - Camillo Almici
- Laboratory for Stem Cells Manipulation and Cryopreservation, Department of Transfusion Medicine, ASST Spedali Civili, 25123 Brescia, Italy; (A.B.); (S.B.); (C.A.); (M.M.)
| | - Mirella Marini
- Laboratory for Stem Cells Manipulation and Cryopreservation, Department of Transfusion Medicine, ASST Spedali Civili, 25123 Brescia, Italy; (A.B.); (S.B.); (C.A.); (M.M.)
| | - Giovanna Piovani
- Biology and Genetics Division, Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy;
| | - Michele Guindani
- Department of Statistics, University of California, Irvine, CA 92697-1250, USA;
| | - Kamol Dey
- Department of Mechanical and Industrial Engineering, University of Brescia, 25123 Brescia, Italy; (K.D.); (L.S.)
| | - Luciana Sartore
- Department of Mechanical and Industrial Engineering, University of Brescia, 25123 Brescia, Italy; (K.D.); (L.S.)
| | - Federica Re
- Department of Clinical and Experimental Sciences, University of Brescia, Bone Marrow Transplant Unit, ASST Spedali Civili, 25123 Brescia, Italy; (F.R.); (D.R.)
| | - Domenico Russo
- Department of Clinical and Experimental Sciences, University of Brescia, Bone Marrow Transplant Unit, ASST Spedali Civili, 25123 Brescia, Italy; (F.R.); (D.R.)
| | - Edoardo Cantù
- Department of Information Engineering, University of Brescia, 25123 Brescia, Italy; (E.C.); (N.F.L.); (M.S.); (E.S.)
| | - Nicola Francesco Lopomo
- Department of Information Engineering, University of Brescia, 25123 Brescia, Italy; (E.C.); (N.F.L.); (M.S.); (E.S.)
| | - Mauro Serpelloni
- Department of Information Engineering, University of Brescia, 25123 Brescia, Italy; (E.C.); (N.F.L.); (M.S.); (E.S.)
| | - Emilio Sardini
- Department of Information Engineering, University of Brescia, 25123 Brescia, Italy; (E.C.); (N.F.L.); (M.S.); (E.S.)
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21
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Genova E, Cavion F, Lucafò M, Pelin M, Lanzi G, Masneri S, Ferraro RM, Fazzi EM, Orcesi S, Decorti G, Tommasini A, Giliani S, Stocco G. Biomarkers and Precision Therapy for Primary Immunodeficiencies: An
In Vitro
Study Based on Induced Pluripotent Stem Cells From Patients. Clin Pharmacol Ther 2020; 108:358-367. [DOI: 10.1002/cpt.1837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/06/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Elena Genova
- PhD Course in Reproductive and Developmental Sciences University of Trieste Trieste Italy
- Department of Life Sciences University of Trieste Trieste Italy
| | - Federica Cavion
- Department of Life Sciences University of Trieste Trieste Italy
| | - Marianna Lucafò
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
| | - Marco Pelin
- Department of Life Sciences University of Trieste Trieste Italy
| | - Gaetana Lanzi
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Stefania Masneri
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Rosalba Monica Ferraro
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Elisa Maria Fazzi
- Child Neurology and Psychiatry Unit ASST Spedali Civili Brescia Italy
- Department of Clinical and Experimental Sciences University of Brescia Brescia Italy
| | - Simona Orcesi
- Department of Brain and Behavioral Sciences University of Pavia Italy
- Child Neurology and Psychiatry Unit IRCCS Mondino Foundation Pavia Italy
| | - Giuliana Decorti
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
- Department of Medical, Surgical and Health Sciences University of Trieste Trieste Italy
| | - Alberto Tommasini
- Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
| | - Silvia Giliani
- ″Angelo Nocivelli” Institute for Molecular Medicine ASST Spedali Civili Brescia Italy
- Department of Molecular and Translational Medicine University of Brescia Brescia Italy
| | - Gabriele Stocco
- Department of Life Sciences University of Trieste Trieste Italy
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22
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Gerasimenko T, Nikulin S, Zakharova G, Poloznikov A, Petrov V, Baranova A, Tonevitsky A. Impedance Spectroscopy as a Tool for Monitoring Performance in 3D Models of Epithelial Tissues. Front Bioeng Biotechnol 2020; 7:474. [PMID: 32039179 PMCID: PMC6992543 DOI: 10.3389/fbioe.2019.00474] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/23/2019] [Indexed: 12/29/2022] Open
Abstract
In contrast to traditional 2D cell cultures, both 3D models and organ-on-a-chip devices allow the study of the physiological responses of human cells. These models reconstruct human tissues in conditions closely resembling the body. Translation of these techniques into practice is hindered by associated labor costs, a need which may be remedied by automation. Impedance spectroscopy (IS) is a promising, automation-compatible label-free technology allowing to carry out a wide range of measurements both in real-time and as endpoints. IS has been applied to both the barrier cultures and the 3D constructs. Here we provide an overview of the impedance-based analysis in different setups and discuss its utility for organ-on-a-chip devices. Most attractive features of impedance-based assays are their compatibility with high-throughput format and supports for the measurements in real time with high temporal resolution, which allow tracing of the kinetics. As of now, IS-based techniques are not free of limitations, including imperfect understanding of the parameters that have their effects on the impedance, especially in 3D cell models, and relatively high cost of the consumables. Moreover, as the theory of IS stems from electromagnetic theory and is quite complex, work on popularization and explanation of the method for experimental biologists is required. It is expected that overcoming these limitations will lead to eventual establishing IS based systems as a standard for automated management of cell-based experiments in both academic and industry environments.
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Affiliation(s)
| | - Sergey Nikulin
- Scientific Research Centre Bioclinicum, Moscow, Russia
- Laboratory of Microphysiological Systems, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
| | - Galina Zakharova
- Laboratory of Molecular Oncoendocrinology, Endocrinology Research Centre, Moscow, Russia
| | - Andrey Poloznikov
- Laboratory of Microphysiological Systems, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
- Department of Translational Oncology, National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - Vladimir Petrov
- Scientific Research Centre Bioclinicum, Moscow, Russia
- Department of Development and Research of Micro- and Nanosystems, Institute of Nanotechnologies of Microelectronics RAS, Moscow, Russia
| | - Ancha Baranova
- School of Systems Biology, George Mason University, Fairfax, VA, United States
- Laboratory of Molecular Genetics, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Laboratory of Functional Genomics, “Research Centre for Medical Genetics”, Moscow, Russia
| | - Alexander Tonevitsky
- Faculty of Biology and Biotechnologies, Higher School of Economics, Moscow, Russia
- Laboratory of Microfluidic Technologies for Biomedicine, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Moscow, Russia
- art photonics GmbH, Berlin, Germany
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23
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Data-Analytics Modeling of Electrical Impedance Measurements for Cell Culture Monitoring. SENSORS 2019; 19:s19214639. [PMID: 31731413 PMCID: PMC6864697 DOI: 10.3390/s19214639] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/18/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022]
Abstract
High-throughput data analysis challenges in laboratory automation and lab-on-a-chip devices' applications are continuously increasing. In cell culture monitoring, specifically, the electrical cell-substrate impedance sensing technique (ECIS), has been extensively used for a wide variety of applications. One of the main drawbacks of ECIS is the need for implementing complex electrical models to decode the electrical performance of the full system composed by the electrodes, medium, and cells. In this work we present a new approach for the analysis of data and the prediction of a specific biological parameter, the fill-factor of a cell culture, based on a polynomial regression, data-analytic model. The method was successfully applied to a specific ECIS circuit and two different cell cultures, N2A (a mouse neuroblastoma cell line) and myoblasts. The data-analytic modeling approach can be used in the decoding of electrical impedance measurements of different cell lines, provided a representative volume of data from the cell culture growth is available, sorting out the difficulties traditionally found in the implementation of electrical models. This can be of particular importance for the design of control algorithms for cell cultures in tissue engineering protocols, and labs-on-a-chip and wearable devices applications.
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24
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Hay DC, O'Farrelly C. Designer human tissue: coming to a lab near you. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0212. [PMID: 29786548 PMCID: PMC5974436 DOI: 10.1098/rstb.2017.0212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2018] [Indexed: 11/12/2022] Open
Abstract
Human pluripotent stem cells (PSCs) offer a scalable alternative to primary and transformed human tissue. PSCs include human embryonic stem cells, derived from the inner cell mass of blastocysts unsuitable for human implantation; and induced PSCs, generated by the reprogramming of somatic cells. Both cell types display the ability to self-renew and retain pluripotency, promising an unlimited supply of human somatic cells for biomedical application. A distinct advantage of using PSCs is the ability to select for genetic background, promising personalized modelling of human biology ‘in a dish’ or immune-matched cell-based therapies for the clinic. This special issue will guide the reader through stem cell self-renewal, pluripotency and differentiation. The first articles focus on improving cell fidelity, understanding the innate immune system and the importance of materials chemistry, biofabrication and bioengineering. These are followed by articles that focus on industrial application, commercialization and label-free assessment of tissue formation. The special issue concludes with an article discussing human liver cell-based therapies past, present and future. This article is part of the theme issue ‘Designer human tissue: coming to a lab near you’.
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Affiliation(s)
- David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, 5 Little France Drive, EH16 4UU Edinburgh, UK
| | - Cliona O'Farrelly
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse St, Dublin 2, Dublin, Republic of Ireland
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25
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Cunha AB, Hou J, Schuelke C. Machine Learning for Stem Cell Differentiation and Proliferation Classification on Electrical Impedance Spectroscopy. JOURNAL OF ELECTRICAL BIOIMPEDANCE 2019; 10:124-132. [PMID: 33584893 PMCID: PMC7851974 DOI: 10.2478/joeb-2019-0018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Indexed: 06/12/2023]
Abstract
Electrical impedance spectroscopy (EIS) measurements on cells is a proven method to assess stem cell proliferation and differentiation. Cell regenerative medicine (CRM) is an emerging field where the need to develop and deploy stem cell assessment techniques is paramount as experimental treatments reach pre-clinical and clinical stages. However, EIS measurements on cells is a method requiring extensive post-processing and analysis. As a contribution to address this concern, we developed three machine learning models for three different stem cell lines able to classify the measured data as proliferation or differentiation laying the stone for future studies on using machine learning to profile EIS measurements on stem cells spectra.
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Affiliation(s)
| | - Jie Hou
- Department of Physics, University of Oslo, Oslo, Norway
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26
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Zhou W, Graham K, Lucendo-Villarin B, Flint O, Hay DC, Bagnaninchi P. Combining stem cell-derived hepatocytes with impedance sensing to better predict human drug toxicity. Expert Opin Drug Metab Toxicol 2018; 15:77-83. [PMID: 30572740 DOI: 10.1080/17425255.2019.1558208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background: The liver plays a central role in human drug metabolism. To model drug metabolism, the major cell type of the liver, the hepatocyte, is commonly used. Hepatocytes can be derived from human and animal sources, including pluripotent stem cells. Cell-based models have shown promise in modeling human drug exposure. The assays used in those studies are normally 'snap-shot' in nature, and do not provide the complete picture of human drug exposure. Research design and methods: In this study, we employ stem cell-derived hepatocytes and impedance sensing to model human drug toxicity. This impedance-based stem cell assay reports hepatotoxicity in real time after treatment with compounds provided by industry. Results: Using electric cell-substrate impedance Sensing (ECIS), we were able to accurately measure drug toxicity post-drug exposure in real time and more quickly than gold standard biochemical assays. Conclusions: ECIS is robust and non-destructive methodology capable of monitoring human drug exposure with superior performance to current gold standard 'snapshot' assays. We believe that the methodology presented within this article could prove valuable in the quest to better predict off-target effects of drugs in humans.
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Affiliation(s)
- Wenli Zhou
- a Department of Medical Oncology , Changzheng Hospital, Navy medical University , Shanghai , China
| | - Karen Graham
- b MRC Centre for Regenerative Medicine, 5 Little France Drive , University of Edinburgh , Edinburgh , UK
| | - Baltasar Lucendo-Villarin
- b MRC Centre for Regenerative Medicine, 5 Little France Drive , University of Edinburgh , Edinburgh , UK
| | - Oliver Flint
- b MRC Centre for Regenerative Medicine, 5 Little France Drive , University of Edinburgh , Edinburgh , UK
| | - David C Hay
- b MRC Centre for Regenerative Medicine, 5 Little France Drive , University of Edinburgh , Edinburgh , UK
| | - Pierre Bagnaninchi
- b MRC Centre for Regenerative Medicine, 5 Little France Drive , University of Edinburgh , Edinburgh , UK
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