1
|
Real-Time Analysis of Oxygen Gradient in Oocyte Respiration Using a High-Density Microelectrode Array. BIOSENSORS-BASEL 2021; 11:bios11080256. [PMID: 34436058 PMCID: PMC8393405 DOI: 10.3390/bios11080256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/20/2021] [Accepted: 07/26/2021] [Indexed: 02/05/2023]
Abstract
Physiological events related to oxygen concentration gradients provide valuable information to determine the state of metabolizing biological cells. The existing oxygen sensing methods (i.e., optical photoluminescence, magnetic resonance, and scanning electrochemical) are well-established and optimized for existing in vitro analyses. However, such methods also present various limitations in resolution, real-time sensing performance, complexity, and costs. An electrochemical imaging system with an integrated microelectrode array (MEA) would offer attractive means of measuring oxygen consumption rate (OCR) based on the cell’s two-dimensional (2D) oxygen concentration gradient. This paper presents an application of an electrochemical sensor platform with a custom-designed complementary-metal-oxide-semiconductor (CMOS)-based microchip and its Pt-coated surface MEA. The high-density MEA provides 16,064 individual electrochemical pixels that cover a 3.6 mm × 3.6 mm area. Utilizing the three-electrode configuration, the system is capable of imaging low oxygen concentration (18.3 µM, 0.58 mg/L, or 13.8 mmHg) at 27.5 µm spatial resolution and up to 4 Hz temporal resolution. In vitro oxygen imaging experiments were performed to analyze bovine cumulus-oocytes-complexes cells OCR and oxygen flux density. The integration of a microfluidic system allows proper bio-sample handling and delivery to the MEA surface for imaging. Finally, the imaging results are processed and presented as 2D heatmaps, representing the dissolved oxygen concentration in the immediate proximity of the MEA. This paper provides the results of real-time 2D imaging of OCR of live cells/tissues to gain spatial and temporal dynamics of target cell metabolism.
Collapse
|
2
|
Xu L, Hu C, Huang Q, Jin K, Zhao P, Wang D, Hou W, Dong L, Hu S, Ma H. Trends and recent development of the microelectrode arrays (MEAs). Biosens Bioelectron 2021; 175:112854. [PMID: 33371989 DOI: 10.1016/j.bios.2020.112854] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 11/27/2022]
Abstract
In this paper, we reviewed the history of microelectrode arrays (MEAs), compared different microfabrication techniques applied to modern MEAs in terms of their material characters, device properties and application scenarios. Then we discussed the biocompatibility of different MEAs as well as corresponding strategy of improvement. At last, we analyzed the growing trend of MEAs' technical route, expected application of MEAs in the field of Electrical impedance tomography (EIT).
Collapse
Affiliation(s)
- Longqian Xu
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China
| | - Chenxuan Hu
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China
| | - Qi Huang
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China
| | - Kai Jin
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China; International Joint Research Center for Nanophotonics and Biophotonics, School of Science, Changchun University of Science and Technology, Changchun, Jilin province, 130022, PR China
| | - Ping Zhao
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China; International Joint Research Center for Nanophotonics and Biophotonics, School of Science, Changchun University of Science and Technology, Changchun, Jilin province, 130022, PR China
| | - Dongping Wang
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China
| | - Wei Hou
- Department of Radiation Oncology & Therapy, The First Hospital of Jilin University, NO.1 Xinmin Street, Changchun, Jilin province, 130021, PR China
| | - Lihua Dong
- Department of Radiation Oncology & Therapy, The First Hospital of Jilin University, NO.1 Xinmin Street, Changchun, Jilin province, 130021, PR China
| | - Siyi Hu
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China
| | - Hanbin Ma
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, No.88 Keling Road, Suzhou, Jiangsu province, 215163, PR China.
| |
Collapse
|
3
|
Anderson TJ, Defnet PA, Zhang B. Electrochemiluminescence (ECL)-Based Electrochemical Imaging Using a Massive Array of Bipolar Ultramicroelectrodes. Anal Chem 2020; 92:6748-6755. [DOI: 10.1021/acs.analchem.0c00921] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Todd J. Anderson
- Department of Chemistry, University of Washington, Seattle, Washington 98195 United States
| | - Peter A. Defnet
- Department of Chemistry, University of Washington, Seattle, Washington 98195 United States
| | - Bo Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195 United States
| |
Collapse
|
4
|
Tedjo W, Chen T. An Integrated Biosensor System With a High-Density Microelectrode Array for Real-Time Electrochemical Imaging. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2020; 14:20-35. [PMID: 31751250 DOI: 10.1109/tbcas.2019.2953579] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electrochemical methods have been shown to be advantageous to life sciences by supporting studies and discoveries in metabolism activities, DNA analysis, and neurotransmitter signaling. Meanwhile, the integration of Microelectrode Array (MEA) and the accessibility of CMOS technology permit high-density electrochemical sensing method. This paper describes an electrochemical imaging system equipped with a custom CMOS microchip. The microchip holds a 3.6 mm × 3.6 mm sensing area containing 16,064 Pt MEA, the associated 16,064 integrated read channels, and digital control circuits. The novel three-electrode system geometry with a 27.5 μm spatial pitch enables cellular level chemical gradient imaging of bio-samples. The noise level of the on-chip read channel array allows amperometric detection of neurotransmitters such as norepinephrine (NE) with concentrations from 4 μM to 512 μM with 4.7 pA/μM sensitivity (R2 = 0.98). Electrochemical response to dissolved oxygen (DO) concentration was also characterized by deoxygenated deionized water containing 5% to 80% of the ambient oxygen concentrations with 86 pA/mg/L sensitivity (R2 = 0.89). The system also demonstrated selectivity to different target analytes using cyclic voltammetry method to simultaneously detect NE and uric acid. Also, a custom indium tin oxide with deposited Au glass electrode was integrated into the microfluidic system to enable pH measurement, ensuring the viability of bio-samples during experiments. Electrochemical images confirm the spatiotemporal performance at four frames per second while maintaining the sensitivity to target analytes. Finally, the overall system is controlled and continuously monitored by a MATLAB-based custom user interface, which is optimized for real-time high spatiotemporal resolution chemical imaging.
Collapse
|
5
|
Schwerdtfeger LA, Tobet SA. From organotypic culture to body-on-a-chip: A neuroendocrine perspective. J Neuroendocrinol 2019; 31:e12650. [PMID: 30307079 DOI: 10.1111/jne.12650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/02/2018] [Accepted: 10/07/2018] [Indexed: 12/22/2022]
Abstract
The methods used to study neuroendocrinology have been as diverse as the discoveries to come out of the field. Maintaining live neurones outside of a body in vitro was important from the beginning, building on methods that dated back to at least the first decade of the 20th Century. Neurosecretion defines an essential foundation of neuroendocrinology based on work that began in the 1920s and 1930s. Throughout the first half of the 20th Century, many paradigms arose for studying everything from single neurones to whole organs in vitro. Two of these survived as preeminent systems for use throughout the second half of the century: cell cultures and explant systems. Slice cultures and explants that emerged as organotypic technologies included such neuroendocrine organs such as the brain, pituitary, adrenals and intestine. The vast majority of these studies were carried out in static cultures for which media were changed over a time scale of days. Tissues were used for experimental techniques such as electrical recording of neuronal physiology in single cells and observation by live microscopy. When maintained in vitro, many of these systems only partially capture the in vivo physiology of the organ system of interest, often because of a lack of cellular diversity (eg, neuronal cultures lacking glia). Modern microfluidic methodologies show promise for organ systems, ranging from the reproductive to the gastrointestinal to the brain. Moving forward and striving to understand the mechanisms that drive neuroendocrine signalling centrally and peripherally, there will always be a need to consider the heterogeneous cellular compositions of organs in vivo.
Collapse
Affiliation(s)
- Luke A Schwerdtfeger
- Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado
| | - Stuart A Tobet
- Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado
| |
Collapse
|
6
|
Rivera JF, Sridharan SV, Nolan JK, Miloro SA, Alam MA, Rickus JL, Janes DB. Real-time characterization of uptake kinetics of glioblastoma vs. astrocytes in 2D cell culture using microelectrode array. Analyst 2018; 143:4954-4966. [PMID: 30225487 DOI: 10.1039/c8an01198b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Extracellular measurement of uptake/release kinetics and associated concentration dependencies provides mechanistic insight into the underlying biochemical processes. Due to the recognized importance of preserving the natural diffusion processes within the local microenvironment, measurement approaches which provide uptake rate and local surface concentration of adherent cells in static media are needed. This paper reports a microelectrode array device and a methodology to measure uptake kinetics as a function of cell surface concentration in adherent 2D cell cultures in static fluids. The microelectrode array simultaneously measures local concentrations at five positions near the cell surface in order to map the time-dependent concentration profile which in turn enables determination of surface concentrations and uptake rates, via extrapolation to the cell plane. Hydrogen peroxide uptake by human astrocytes (normal) and glioblastoma multiforme (GBM43, cancer) was quantified for initial concentrations of 20 to 500 μM over time intervals of 4000 s. For both cell types, the overall uptake rate versus surface concentration relationships exhibited non-linear kinetics, well-described by a combination of linear and Michaelis-Menten mechanisms and in agreement with the literature. The GBM43 cells showed a higher uptake rate over the full range of concentrations, primarily due to a larger linear component. Diffusion-reaction models using the non-linear parameters and standard first-order relationships are compared. In comparison to results from typical volumetric measurements, the ability to extract both uptake rate and surface concentration in static media provides kinetic parameters that are better suited for developing reaction-diffusion models to adequately describe behavior in more complex culture/tissue geometries. The results also highlight the need for characterization of the uptake rate over a wider range of cell surface concentrations in order to evaluate the potential therapeutic role of hydrogen peroxide in cancerous cells.
Collapse
Affiliation(s)
- Jose F Rivera
- Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.
| | | | | | | | | | | | | |
Collapse
|
7
|
Abe H, Iwama T, Yabu H, Ino K, Inoue KY, Suda A, Kunikata R, Matsudaira M, Matsue T. Simultaneous and Selective Imaging of Dopamine and Glutamate Using an Enzyme‐modified Large‐scale Integration (LSI)‐based Amperometric Electrochemical Device. ELECTROANAL 2018. [DOI: 10.1002/elan.201800386] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hiroya Abe
- Graduate School of Environmental Studies Tohoku University 6-6-11-604 Aramaki-aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Tomoki Iwama
- Graduate School of Environmental Studies Tohoku University 6-6-11-604 Aramaki-aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Hiroshi Yabu
- WPI-Advanced Institute for Materials Research Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan
| | - Kosuke Ino
- Graduate School of Engineering Tohoku University 6-6-11-406 Aramaki-aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Kumi Y. Inoue
- Graduate School of Environmental Studies Tohoku University 6-6-11-604 Aramaki-aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Atsushi Suda
- Japan Aviation Electronics Industry, Ltd. 1-1, Musashino 3-chome, Akishima-shi Tokyo 196-8555 Japan
| | - Ryota Kunikata
- Japan Aviation Electronics Industry, Ltd. 1-1, Musashino 3-chome, Akishima-shi Tokyo 196-8555 Japan
| | - Masahki Matsudaira
- Micro System Integration Center Tohoku University 519-1176 Aramaki-aza Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Tomokazu Matsue
- Graduate School of Environmental Studies Tohoku University 6-6-11-604 Aramaki-aza Aoba, Aoba-ku Sendai 980-8579 Japan
| |
Collapse
|
8
|
Electrochemical biosensor system using a CMOS microelectrode array provides high spatially and temporally resolved images. Biosens Bioelectron 2018; 114:78-88. [DOI: 10.1016/j.bios.2018.04.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/21/2018] [Accepted: 04/06/2018] [Indexed: 11/20/2022]
|
9
|
Sismaet HJ, Goluch ED. Electrochemical Probes of Microbial Community Behavior. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2018; 11:441-461. [PMID: 29490192 DOI: 10.1146/annurev-anchem-061417-125627] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Advances in next-generation sequencing technology along with decreasing costs now allow the microbial population, or microbiome, of a location to be determined relatively quickly. This research reveals that microbial communities are more diverse and complex than ever imagined. New and specialized instrumentation is required to investigate, with high spatial and temporal resolution, the dynamic biochemical environment that is created by microbes, which allows them to exist in every corner of the Earth. This review describes how electrochemical probes and techniques are being used and optimized to learn about microbial communities. Described approaches include voltammetry, electrochemical impedance spectroscopy, scanning electrochemical microscopy, separation techniques coupled with electrochemical detection, and arrays of complementary metal-oxide-semiconductor circuits. Microbial communities also interact with and influence their surroundings; therefore, the review also includes a discussion of how electrochemical probes optimized for microbial analysis are utilized in healthcare diagnostics and environmental monitoring applications.
Collapse
Affiliation(s)
- Hunter J Sismaet
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, USA;
| | - Edgar D Goluch
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, USA;
- Department of Bioengineering, Department of Biology, and Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, USA
| |
Collapse
|
10
|
Advances and Perspectives in Chemical Imaging in Cellular Environments Using Electrochemical Methods. CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6020024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
11
|
McLean IC, Schwerdtfeger LA, Tobet SA, Henry CS. Powering ex vivo tissue models in microfluidic systems. LAB ON A CHIP 2018; 18:1399-1410. [PMID: 29697131 DOI: 10.1039/c8lc00241j] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
This Frontiers review analyzes the rapidly growing microfluidic strategies that have been employed in attempts to create physio relevant 'organ-on-chip' models using primary tissue removed from a body (human or animal). Tissue harvested immediately from an organism, and cultured under artificial conditions is referred to as ex vivo tissue. The use of primary (organotypic) tissue offers unique benefits over traditional cell culture experiments, and microfluidic technology can be used to further exploit these advantages. Defining the utility of particular models, determining necessary constituents for acceptable modeling of in vivo physiology, and describing the role of microfluidic systems in tissue modeling processes is paramount to the future of organotypic models ex vivo. Virtually all tissues within the body are characterized by a large diversity of cellular composition, morphology, and blood supply (e.g., nutrient needs including oxygen). Microfluidic technology can provide a means to help maintain tissue in more physiologically relevant environments, for tissue relevant time-frames (e.g., matching the natural rates of cell turnover), and at in vivo oxygen tensions that can be controlled within modern microfluidic culture systems. Models for ex vivo tissues continue to emerge and grow in efficacy as mimics of in vivo physiology. This review addresses developments in microfluidic devices for the study of tissues ex vivo that can serve as an important bridge to translational value.
Collapse
Affiliation(s)
- Ian C McLean
- Department of Biomedical Sciences, School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, USA.
| | | | | | | |
Collapse
|
12
|
Lin TE, Rapino S, Girault HH, Lesch A. Electrochemical imaging of cells and tissues. Chem Sci 2018; 9:4546-4554. [PMID: 29899947 PMCID: PMC5969511 DOI: 10.1039/c8sc01035h] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 04/09/2018] [Indexed: 01/10/2023] Open
Abstract
This minireview summarizes the recent achievements of electrochemical imaging platforms to map cellular functions in biological specimens using electrochemical scanning nano/micro-probe microscopy and 2D chips containing microelectrode arrays.
The technological and experimental progress in electrochemical imaging of biological specimens is discussed with a view on potential applications for skin cancer diagnostics, reproductive medicine and microbial testing. The electrochemical analysis of single cell activity inside cell cultures, 3D cellular aggregates and microtissues is based on the selective detection of electroactive species involved in biological functions. Electrochemical imaging strategies, based on nano/micrometric probes scanning over the sample and sensor array chips, respectively, can be made sensitive and selective without being affected by optical interference as many other microscopy techniques. The recent developments in microfabrication, electronics and cell culturing/tissue engineering have evolved in affordable and fast-sampling electrochemical imaging platforms. We believe that the topics discussed herein demonstrate the applicability of electrochemical imaging devices in many areas related to cellular functions.
Collapse
Affiliation(s)
- Tzu-En Lin
- Laboratory of Physical and Analytical Electrochemistry (LEPA) , École Polytechnique Fédéderale de Lausanne , EPFL Valais Valais , Rue de l'Industrie 17 , CP 440 , 1951 Sion , Switzerland .
| | - Stefania Rapino
- Chemistry Department "Giacomo Ciamician" , University of Bologna , Via Selmi 2 , 40126 Bologna , Italy
| | - Hubert H Girault
- Laboratory of Physical and Analytical Electrochemistry (LEPA) , École Polytechnique Fédéderale de Lausanne , EPFL Valais Valais , Rue de l'Industrie 17 , CP 440 , 1951 Sion , Switzerland .
| | - Andreas Lesch
- Laboratory of Physical and Analytical Electrochemistry (LEPA) , École Polytechnique Fédéderale de Lausanne , EPFL Valais Valais , Rue de l'Industrie 17 , CP 440 , 1951 Sion , Switzerland .
| |
Collapse
|
13
|
Kanno Y, Ino K, Abe H, Sakamoto C, Onodera T, Inoue KY, Suda A, Kunikata R, Matsudaira M, Shiku H, Matsue T. Electrochemicolor Imaging Using an LSI-Based Device for Multiplexed Cell Assays. Anal Chem 2017; 89:12778-12786. [PMID: 29090905 DOI: 10.1021/acs.analchem.7b03042] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Multiplexed bioimaging systems have triggered the development of effective assays, contributing new biological information. Although electrochemical imaging is beneficial for quantitative analysis in real time, monitoring multiple cell functions is difficult. We have developed a novel electrochemical imaging system, herein, using a large-scale integration (LSI)-based amperometric device for detecting multiple biomolecules simultaneously. This system is designated as an electrochemicolor imaging system in which the current signals from two different types of biomolecules are depicted as a multicolor electrochemical image. The mode-selectable function of the 400-electrode device enables the imaging system and two different potentials can be independently applied to the selected electrodes. The imaging system is successfully applied for detecting multiple cell functions of the embryonic stem (ES) cell and the rat pheochromocytoma (PC12) cell aggregates. To the best of our knowledge, this is the first time that a real-time electrochemical mapping technique for multiple electroactive species, simultaneously, has been reported. The imaging system is a promising bioanalytical method for exploring complex biological phenomena.
Collapse
Affiliation(s)
- Yusuke Kanno
- Graduate School of Environmental Studies, Tohoku University , 6-6-11-604 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Kosuke Ino
- Graduate School of Engineering, Tohoku University , 6-6-11-406 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Hiroya Abe
- Graduate School of Environmental Studies, Tohoku University , 6-6-11-604 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Chika Sakamoto
- Graduate School of Environmental Studies, Tohoku University , 6-6-11-604 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Takehiro Onodera
- Graduate School of Engineering, Tohoku University , 6-6-11-406 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Kumi Y Inoue
- Graduate School of Environmental Studies, Tohoku University , 6-6-11-604 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Atsushi Suda
- Japan Aviation Electronics Industry, Ltd. , 1-1 Musashino 3-chome, Akishima-shi, Tokyo 196-8555, Japan
| | - Ryota Kunikata
- Japan Aviation Electronics Industry, Ltd. , 1-1 Musashino 3-chome, Akishima-shi, Tokyo 196-8555, Japan
| | - Masahki Matsudaira
- Micro System Integration Center, Tohoku University , 519-1176 Aramaki-aza Aoba, Aoba-ku, Sendai 980-0845, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University , 6-6-11-406 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Tomokazu Matsue
- Graduate School of Environmental Studies, Tohoku University , 6-6-11-604 Aramaki-aza Aoba, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
14
|
Recent Advances in Biosensing for Neurotransmitters and Disease Biomarkers using Microelectrodes. ChemElectroChem 2017. [DOI: 10.1002/celc.201600810] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
15
|
Wang L, Veselinovic M, Yang L, Geiss BJ, Dandy DS, Chen T. A sensitive DNA capacitive biosensor using interdigitated electrodes. Biosens Bioelectron 2017; 87:646-653. [PMID: 27619528 PMCID: PMC5295646 DOI: 10.1016/j.bios.2016.09.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 08/18/2016] [Accepted: 09/01/2016] [Indexed: 11/29/2022]
Abstract
This paper presents a label-free affinity-based capacitive biosensor using interdigitated electrodes. Using an optimized process of DNA probe preparation to minimize the effect of contaminants in commercial thiolated DNA probe, the electrode surface was functionalized with the 24-nucleotide DNA probes based on the West Nile virus sequence (Kunjin strain). The biosensor has the ability to detect complementary DNA fragments with a detection limit down to 20 DNA target molecules (1.5aM range), making it suitable for a practical point-of-care (POC) platform for low target count clinical applications without the need for amplification. The reproducibility of the biosensor detection was improved with efficient covalent immobilization of purified single-stranded DNA probe oligomers on cleaned gold microelectrodes. In addition to the low detection limit, the biosensor showed a dynamic range of detection from 1µL-1 to 105µL-1 target molecules (20 to 2 million targets), making it suitable for sample analysis in a typical clinical application environment. The binding results presented in this paper were validated using fluorescent oligomers.
Collapse
Affiliation(s)
- Lei Wang
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Milena Veselinovic
- Department of Microbiology, Immunology & Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Lang Yang
- Department of Electrical & Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Brian J Geiss
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA; Department of Microbiology, Immunology & Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - David S Dandy
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA; Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Tom Chen
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA; Department of Electrical & Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA.
| |
Collapse
|