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Colachis M, Schlink BR, Colachis S, Shqau K, Huegen BL, Palmer K, Heintz A. Benchtop Performance of Novel Mixed Ionic-Electronic Conductive Electrode Form Factors for Biopotential Recordings. SENSORS (BASEL, SWITZERLAND) 2024; 24:3136. [PMID: 38793990 PMCID: PMC11125343 DOI: 10.3390/s24103136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/02/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
Background: Traditional gel-based (wet) electrodes for biopotential recordings have several shortcomings that limit their practicality for real-world measurements. Dry electrodes may improve usability, but they often suffer from reduced signal quality. We sought to evaluate the biopotential recording properties of a novel mixed ionic-electronic conductive (MIEC) material for improved performance. Methods: We fabricated four MIEC electrode form factors and compared their signal recording properties to two control electrodes, which are electrodes commonly used for biopotential recordings (Ag-AgCl and stainless steel). We used an agar synthetic skin to characterize the impedance of each electrode form factor. An electrical phantom setup allowed us to compare the recording quality of simulated biopotentials with ground-truth sources. Results: All MIEC electrode form factors yielded impedances in a similar range to the control electrodes (all <80 kΩ at 100 Hz). Three of the four MIEC samples produced similar signal-to-noise ratios and interfacial charge transfers as the control electrodes. Conclusions: The MIEC electrodes demonstrated similar and, in some cases, better signal recording characteristics than current state-of-the-art electrodes. MIEC electrodes can also be fabricated into a myriad of form factors, underscoring the great potential this novel material has across a wide range of biopotential recording applications.
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Affiliation(s)
- Matthew Colachis
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
| | - Bryan R. Schlink
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
| | - Sam Colachis
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
| | - Krenar Shqau
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
| | - Brittani L. Huegen
- UES, a BlueHalo Company, 4401 Dayton Xenia Road, Beavercreek, OH 45432, USA;
| | - Katherine Palmer
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
| | - Amy Heintz
- Battelle Memorial Institute, 505 King Ave., Columbus, OH 43201, USA; (B.R.S.); (K.S.); (K.P.); (A.H.)
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2
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Qiu Y, Ashok A, Nguyen CC, Yamauchi Y, Do TN, Phan HP. Integrated Sensors for Soft Medical Robotics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308805. [PMID: 38185733 DOI: 10.1002/smll.202308805] [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: 10/03/2023] [Revised: 11/24/2023] [Indexed: 01/09/2024]
Abstract
Minimally invasive procedures assisted by soft robots for surgery, diagnostics, and drug delivery have unprecedented benefits over traditional solutions from both patient and surgeon perspectives. However, the translation of such technology into commercialization remains challenging. The lack of perception abilities is one of the obstructive factors paramount for a safe, accurate and efficient robot-assisted intervention. Integrating different types of miniature sensors onto robotic end-effectors is a promising trend to compensate for the perceptual deficiencies in soft robots. For example, haptic feedback with force sensors helps surgeons to control the interaction force at the tool-tissue interface, impedance sensing of tissue electrical properties can be used for tumor detection. The last decade has witnessed significant progress in the development of multimodal sensors built on the advancement in engineering, material science and scalable micromachining technologies. This review article provides a snapshot on common types of integrated sensors for soft medical robots. It covers various sensing mechanisms, examples for practical and clinical applications, standard manufacturing processes, as well as insights on emerging engineering routes for the fabrication of novel and high-performing sensing devices.
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Affiliation(s)
- Yulin Qiu
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Aditya Ashok
- Australian Institute of Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Chi Cong Nguyen
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Yusuke Yamauchi
- Australian Institute of Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, Queensland, 4067, Australia
- Department of Materials Science and Engineering, School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
| | - Thanh Nho Do
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- Tyree Foundation Institute of Health Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Hoang-Phuong Phan
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- Tyree Foundation Institute of Health Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
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3
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Moreddu R. Nanotechnology and Cancer Bioelectricity: Bridging the Gap Between Biology and Translational Medicine. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304110. [PMID: 37984883 PMCID: PMC10767462 DOI: 10.1002/advs.202304110] [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: 06/21/2023] [Revised: 09/25/2023] [Indexed: 11/22/2023]
Abstract
Bioelectricity is the electrical activity that occurs within living cells and tissues. This activity is critical for regulating homeostatic cellular function and communication, and disruptions of the same can lead to a variety of conditions, including cancer. Cancer cells are known to exhibit abnormal electrical properties compared to their healthy counterparts, and this has driven researchers to investigate the potential of harnessing bioelectricity as a tool in cancer diagnosis, prognosis, and treatment. In parallel, bioelectricity represents one of the means to gain fundamental insights on how electrical signals and charges play a role in cancer insurgence, growth, and progression. This review provides a comprehensive analysis of the literature in this field, addressing the fundamentals of bioelectricity in single cancer cells, cancer cell cohorts, and cancerous tissues. The emerging role of bioelectricity in cancer proliferation and metastasis is introduced. Based on the acknowledgement that this biological information is still hard to access due to the existing gap between biological findings and translational medicine, the latest advancements in the field of nanotechnologies for cellular electrophysiology are examined, as well as the most recent developments in micro- and nano-devices for cancer diagnostics and therapy targeting bioelectricity.
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Zhang C, Hu X, Jin L, Lin L, Lin H, Yang Z, Huang W. Strategic Design of Conquering Hypoxia in Tumor for Advanced Photodynamic Therapy. Adv Healthc Mater 2023; 12:e2300530. [PMID: 37186515 DOI: 10.1002/adhm.202300530] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/08/2023] [Indexed: 05/17/2023]
Abstract
Photodynamic therapy (PDT), with its advantages of high targeting, minimally invasive, and low toxicity side effects, has been widely used in the clinical therapy of various tumors, especially superficial tumors. However, the tumor microenvironment (TME) presents hypoxia due to the low oxygen (O2 ) supply caused by abnormal vascularization in neoplastic tissues and high O2 consumption induced by the rapid proliferation of tumor cells. The efficacy of oxygen-consumping PDT can be hampered by a hypoxic TME. To address this problem, researchers have been developing advanced nanoplatforms and strategies to enhance the therapeutic effect of PDT in tumor treatment. This review summarizes recent advanced PDT therapeutic strategies to against the hypoxic TME, thus enhancing PDT efficacy, including increasing O2 content in TME through delivering O2 to the tumors and in situ generations of O2 ; decreasing the O2 consumption during PDT by design of type I photosensitizers. Moreover, recent synergistically combined therapy of PDT and other therapeutic methods such as chemotherapy, photothermal therapy, immunotherapy, and gas therapy is accounted for by addressing the challenging problems of mono PDT in hypoxic environments, including tumor resistance, proliferation, and metastasis. Finally, perspectives of the opportunities and challenges of PDT in future clinical research and translations are provided.
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Affiliation(s)
- Cheng Zhang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
| | - Xiaoming Hu
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
- Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, 350117, P. R. China
- Jiangxi Key Laboratory of Nanobiomaterials, School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, P. R. China
| | - Long Jin
- Department of Pathology, Shengli Clinical Medical College, Fujian Medical University, Fuzhou, 350001, P. R. China
| | - Lisheng Lin
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
| | - Hongxin Lin
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
| | - Zhen Yang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
- Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, 350117, P. R. China
| | - Wei Huang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Strait Institute of Flexible Electronics (SIFE Future Technologies), Fujian Normal University, Fuzhou, 350007, P. R. China
- Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, 350117, P. R. China
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE) Northwestern Polytechnical University Xi'an, Xi'an, 710072, P. R. China
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Tong Y, Zhang Y, Bao B, Hu X, Li J, Wu H, Yang K, Zhang S, Yang H, Guo K. Multifunctional Biosensing Platform Based on Nickel-Modified Laser-Induced Graphene. Bioengineering (Basel) 2023; 10:620. [PMID: 37237690 PMCID: PMC10215889 DOI: 10.3390/bioengineering10050620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Nickel plating electrolytes prepared by using a simple salt solution can achieve nickel plating on laser-induced graphene (LIG) electrodes, which greatly enhances the electrical conductivity, electrochemical properties, wear resistance, and corrosion resistance of LIG. This makes the LIG-Ni electrodes well suited for electrophysiological, strain, and electrochemical sensing applications. The investigation of the mechanical properties of the LIG-Ni sensor and the monitoring of pulse, respiration, and swallowing confirmed that the sensor can sense insignificant deformations to relatively large conformal strains of skin. Modulation of the nickel-plating process of LIG-Ni, followed by chemical modification, may allow for the introduction of glucose redox catalyst Ni2Fe(CN)6 with interestingly strong catalytic effects, which gives LIG-Ni impressive glucose-sensing properties. Additionally, the chemical modification of LIG-Ni for pH and Na+ monitoring also confirmed its strong electrochemical monitoring potential, which demonstrates application prospects in the development of multiple electrochemical sensors for sweat parameters. A more uniform LIG-Ni multi-physiological sensor preparation process provides a prerequisite for the construction of an integrated multi-physiological sensor system. The sensor was validated to have continuous monitoring performance, and its preparation process is expected to form a system for non-invasive physiological parameter signal monitoring, thus contributing to motion monitoring, disease prevention, and disease diagnosis.
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Affiliation(s)
- Yao Tong
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Yingying Zhang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Benkun Bao
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Xuhui Hu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Jiuqiang Li
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Han Wu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Kerong Yang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Senhao Zhang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Hongbo Yang
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Kai Guo
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
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Nguyen TH, Nguyen HA, Tran Thi YV, Hoang Tran D, Cao H, Chu Duc T, Bui TT, Do Quang L. Concepts, electrode configuration, characterization, and data analytics of electric and electrochemical microfluidic platforms: a review. Analyst 2023; 148:1912-1929. [PMID: 36928639 DOI: 10.1039/d2an02027k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Microfluidic cytometry (MC) and electrical impedance spectroscopy (EIS) are two important techniques in biomedical engineering. Microfluidic cytometry has been utilized in various fields such as stem cell differentiation and cancer metastasis studies, and provides a simple, label-free, real-time method for characterizing and monitoring cellular fates. The impedance microdevice, including impedance flow cytometry (IFC) and electrical impedance spectroscopy (EIS), is integrated into MC systems. IFC measures the impedance of individual cells as they flow through a microfluidic device, while EIS measures impedance changes during binding events on electrode regions. There have been significant efforts to improve and optimize these devices for both basic research and clinical applications, based on the concepts, electrode configurations, and cell fates. This review outlines the theoretical concepts, electrode engineering, and data analytics of these devices, and highlights future directions for development.
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Affiliation(s)
- Thu Hang Nguyen
- University of Engineering and Technology, Vietnam National University, Hanoi, Vietnam.
| | | | - Y-Van Tran Thi
- University of Science, Vietnam National University, Hanoi, Vietnam.
| | | | - Hung Cao
- University of California, Irvine, USA
| | - Trinh Chu Duc
- University of Engineering and Technology, Vietnam National University, Hanoi, Vietnam.
| | - Tung Thanh Bui
- University of Engineering and Technology, Vietnam National University, Hanoi, Vietnam.
| | - Loc Do Quang
- University of Science, Vietnam National University, Hanoi, Vietnam.
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7
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Tang B, Liu M, Dietzel A. Low-Cost Impedance Camera for Cell Distribution Monitoring. BIOSENSORS 2023; 13:281. [PMID: 36832047 PMCID: PMC9954133 DOI: 10.3390/bios13020281] [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: 12/15/2022] [Revised: 01/31/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Electrical impedance spectroscopy (EIS) is widely recognized as a powerful tool in biomedical research. For example, it allows detection and monitoring of diseases, measuring of cell density in bioreactors, and characterizing the permeability of tight junctions in barrier-forming tissue models. However, with single-channel measurement systems, only integral information is obtained without spatial resolution. Here we present a low-cost multichannel impedance measurement set-up capable of mapping cell distributions in a fluidic environment by using a microelectrode array (MEA) realized in 4-level printed circuit board (PCB) technology including layers for shielding, interconnections, and microelectrodes. The array of 8 × 8 gold microelectrode pairs was connected to home-built electric circuitry consisting of commercial components such as programmable multiplexers and an analog front-end module which allows the acquisition and processing of electrical impedances. For a proof-of-concept, the MEA was wetted in a 3D printed reservoir into which yeast cells were locally injected. Impedance maps were recorded at 200 kHz which correlate well with the optical images showing the yeast cell distribution in the reservoir. Blurring from parasitic currents slightly disturbing the impedance maps could be eliminated by deconvolution using an experimentally determined point spread function. The MEA of the impedance camera can in future be further miniaturized and integrated into cell cultivation and perfusion systems such as organ on chip devices to augment or even replace light microscopic monitoring of cell monolayer confluence and integrity during the cultivation in incubation chambers.
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Affiliation(s)
- Bo Tang
- Institute of Microtechnology (IMT), Technische Universität Brauschweig, Alte Salzdahlumer Str. 203, 38124 Brauschweig, Germany
- Center of Pharmaceutical Engineering (PVZ), Technische Universitãt Braunschweig, Franz-Liszt-Straße 35a, 38106 Braunschweig, Germany
| | - Mengxi Liu
- Institute of Microtechnology (IMT), Technische Universität Brauschweig, Alte Salzdahlumer Str. 203, 38124 Brauschweig, Germany
| | - Andreas Dietzel
- Institute of Microtechnology (IMT), Technische Universität Brauschweig, Alte Salzdahlumer Str. 203, 38124 Brauschweig, Germany
- Center of Pharmaceutical Engineering (PVZ), Technische Universitãt Braunschweig, Franz-Liszt-Straße 35a, 38106 Braunschweig, Germany
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8
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High-frequency phenomena and electrochemical impedance spectroscopy at nanoelectrodes. Curr Opin Colloid Interface Sci 2023. [DOI: 10.1016/j.cocis.2022.101654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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9
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McCorry MC, Reardon KF, Black M, Williams C, Babakhanova G, Halpern JM, Sarkar S, Swami NS, Mirica KA, Boermeester S, Underhill A. Sensor technologies for quality control in engineered tissue manufacturing. Biofabrication 2022; 15:10.1088/1758-5090/ac94a1. [PMID: 36150372 PMCID: PMC10283157 DOI: 10.1088/1758-5090/ac94a1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 09/23/2022] [Indexed: 11/11/2022]
Abstract
The use of engineered cells, tissues, and organs has the opportunity to change the way injuries and diseases are treated. Commercialization of these groundbreaking technologies has been limited in part by the complex and costly nature of their manufacture. Process-related variability and even small changes in the manufacturing process of a living product will impact its quality. Without real-time integrated detection, the magnitude and mechanism of that impact are largely unknown. Real-time and non-destructive sensor technologies are key for in-process insight and ensuring a consistent product throughout commercial scale-up and/or scale-out. The application of a measurement technology into a manufacturing process requires cell and tissue developers to understand the best way to apply a sensor to their process, and for sensor manufacturers to understand the design requirements and end-user needs. Furthermore, sensors to monitor component cells' health and phenotype need to be compatible with novel integrated and automated manufacturing equipment. This review summarizes commercially relevant sensor technologies that can detect meaningful quality attributes during the manufacturing of regenerative medicine products, the gaps within each technology, and sensor considerations for manufacturing.
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Affiliation(s)
- Mary Clare McCorry
- Advanced Regenerative Manufacturing Institute, Manchester, NH 03101, United States of America
| | - Kenneth F Reardon
- Chemical and Biological Engineering and Biomedical Engineering, Colorado State University, Fort Collins, CO 80521, United States of America
| | - Marcie Black
- Advanced Silicon Group, Lowell, MA 01854, United States of America
| | - Chrysanthi Williams
- Access Biomedical Solutions, Trinity, Florida 34655, United States of America
| | - Greta Babakhanova
- National Institute of Standards and Technology, Gaithersburg, MD 20899, United States of America
| | - Jeffrey M Halpern
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, United States of America
- Materials Science and Engineering Program, University of New Hampshire, Durham, NH 03824, United States of America
| | - Sumona Sarkar
- National Institute of Standards and Technology, Gaithersburg, MD 20899, United States of America
| | - Nathan S Swami
- Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, United States of America
| | - Katherine A Mirica
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, United States of America
| | - Sarah Boermeester
- Advanced Regenerative Manufacturing Institute, Manchester, NH 03101, United States of America
| | - Abbie Underhill
- Scientific Bioprocessing Inc., Pittsburgh, PA 15238, United States of America
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Zhuang J, Zhu C, Han R, Steuer A, Kolb JF, Shi F. Uncertainty Quantification and Sensitivity Analysis for the Electrical Impedance Spectroscopy of Changes to Intercellular Junctions Induced by Cold Atmospheric Plasma. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27185861. [PMID: 36144597 PMCID: PMC9503961 DOI: 10.3390/molecules27185861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/22/2022]
Abstract
The influence of pertinent parameters of a Cole-Cole model in the impedimetric assessment of cell-monolayers was investigated with respect to the significance of their individual contribution. The analysis enables conclusions on characteristics, such as intercellular junctions. Especially cold atmospheric plasma (CAP) has been proven to influence intercellular junctions which may become a key factor in CAP-related biological effects. Therefore, the response of rat liver epithelial cells (WB-F344) and their malignant counterpart (WB-ras) was studied by electrical impedance spectroscopy (EIS). Cell monolayers before and after CAP treatment were analyzed. An uncertainty quantification (UQ) of Cole parameters revealed the frequency cut-off point between low and high frequency resistances. A sensitivity analysis (SA) showed that the Cole parameters, R0 and α were the most sensitive, while Rinf and τ were the least sensitive. The temporal development of major Cole parameters indicates that CAP induced reversible changes in intercellular junctions, but not significant changes in membrane permeability. Sustained changes of τ suggested that long-lived ROS, such as H2O2, might play an important role. The proposed analysis confirms that an inherent advantage of EIS is the real time observation for CAP-induced changes on intercellular junctions, with a label-free and in situ method manner.
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Affiliation(s)
- Jie Zhuang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 215000, China
| | - Cheng Zhu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 215000, China
| | - Rui Han
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 215000, China
| | - Anna Steuer
- Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany
| | - Juergen F. Kolb
- Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany
| | - Fukun Shi
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- Correspondence: ; Tel.: +86-051269588135
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