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Park H, Park JH. Electrochemical Characterization of Neurotransmitters in a Single Submicron Droplet. BIOSENSORS 2024; 14:102. [PMID: 38392021 PMCID: PMC10886559 DOI: 10.3390/bios14020102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
Single-entity electrochemistry, which employs electrolysis during the collision of single particles on ultramicroelectrodes, has witnessed significant advancements in recent years, enabling the observation and characterization of individual particles. Information on a single aqueous droplet (e.g., size) can also be studied based on the redox species contained therein. Dopamine, a redox-active neurotransmitter, is usually present in intracellular vesicles. Similarly, in the current study, the electrochemical properties of neurotransmitters in submicron droplets were investigated. Because dopamine oxidation is accompanied by proton transfer, unique electrochemical properties of dopamine were observed in the droplet. We also investigated the electrochemical properties of the adsorbed droplets containing DA and the detection of oxidized dopamine by the recollision phenomenon.
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Affiliation(s)
| | - Jun Hui Park
- Department of Chemistry, Chungbuk National University, Cheongju 28644, Republic of Korea
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2
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Cheng H, Tang Y, Li Z, Guo Z, Heath JR, Xue M, Wei W. Non-Mass Spectrometric Targeted Single-Cell Metabolomics. Trends Analyt Chem 2023; 168:117300. [PMID: 37840599 PMCID: PMC10569257 DOI: 10.1016/j.trac.2023.117300] [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] [Indexed: 10/17/2023]
Abstract
Metabolic assays serve as pivotal tools in biomedical research, offering keen insights into cellular physiological and pathological states. While mass spectrometry (MS)-based metabolomics remains the gold standard for comprehensive, multiplexed analyses of cellular metabolites, innovative technologies are now emerging for the targeted, quantitative scrutiny of metabolites and metabolic pathways at the single-cell level. In this review, we elucidate an array of these advanced methodologies, spanning synthetic and surface chemistry techniques, imaging-based methods, and electrochemical approaches. We summarize the rationale, design principles, and practical applications for each method, and underscore the synergistic benefits of integrating single-cell metabolomics (scMet) with other single-cell omics technologies. Concluding, we identify prevailing challenges in the targeted scMet arena and offer a forward-looking commentary on future avenues and opportunities in this rapidly evolving field.
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Affiliation(s)
- Hanjun Cheng
- Institute for Systems Biology, Seattle, WA, 98109, United States
| | - Yin Tang
- Institute for Systems Biology, Seattle, WA, 98109, United States
| | - Zhonghan Li
- Department of Chemistry, University of California, Riverside, CA, 92521, United States
| | - Zhili Guo
- Department of Chemistry, University of California, Riverside, CA, 92521, United States
| | - James R. Heath
- Institute for Systems Biology, Seattle, WA, 98109, United States
| | - Min Xue
- Department of Chemistry, University of California, Riverside, CA, 92521, United States
| | - Wei Wei
- Institute for Systems Biology, Seattle, WA, 98109, United States
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3
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De Alwis AC, Denison JD, Shah R, McCarty GS, Sombers LA. Exploiting Microelectrode Geometry for Comprehensive Detection of Individual Exocytosis Events at Single Cells. ACS Sens 2023; 8:3187-3194. [PMID: 37552870 PMCID: PMC10464603 DOI: 10.1021/acssensors.3c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023]
Abstract
Carbon fiber microelectrodes are commonly used for real-time monitoring of individual exocytosis events at single cells. Since the nature of an electrochemical signal is fundamentally governed by mass transport to the electrode surface, microelectrode geometry can be exploited to achieve precise and accurate measurements. Researchers traditionally pair amperometric measurements of exocytosis with a ∼10-μm diameter, disk microelectrode in an "artificial synapse" configuration to directly monitor individual release events from single cells. Exocytosis is triggered, and released molecules diffuse to the "post-synaptic" electrode for oxidation. This results in a series of distinct current spikes corresponding to individual exocytosis events. However, it remains unclear how much of the material escapes detection. In this work, the performance of 10- and 34-μm diameter carbon fiber disk microelectrodes was directly compared in monitoring exocytosis at single chromaffin cells. The 34-μm diameter electrode was more sensitive to catecholamines and enkephalins than its traditional, 10-μm diameter counterpart, and it more effectively covered the entire cell. As such, the larger sensor detected more exocytosis events overall, as well as a larger quantal size, suggesting that the traditional tools underestimate the above measurements. Both sensors reliably measured l-DOPA-evoked changes in quantal size, and both exhibited diffusional loss upon adjustment of cell-electrode spacing. Finite element simulations using COMSOL support the improved collection efficiency observed using the larger sensor. Overall, this work demonstrates how electrode geometry can be exploited for improved detection of exocytosis events by addressing diffusional loss─an often-overlooked source of inaccuracy in single-cell measurements.
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Affiliation(s)
- A. Chathuri De Alwis
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - J. Dylan Denison
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Ruby Shah
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Gregory S. McCarty
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Leslie A. Sombers
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
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4
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Micro- and nano-devices for electrochemical sensing. Mikrochim Acta 2022; 189:459. [DOI: 10.1007/s00604-022-05548-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/02/2022] [Indexed: 11/24/2022]
Abstract
AbstractElectrode miniaturization has profoundly revolutionized the field of electrochemical sensing, opening up unprecedented opportunities for probing biological events with a high spatial and temporal resolution, integrating electrochemical systems with microfluidics, and designing arrays for multiplexed sensing. Several technological issues posed by the desire for downsizing have been addressed so far, leading to micrometric and nanometric sensing systems with different degrees of maturity. However, there is still an endless margin for researchers to improve current strategies and cope with demanding sensing fields, such as lab-on-a-chip devices and multi-array sensors, brain chemistry, and cell monitoring. In this review, we present current trends in the design of micro-/nano-electrochemical sensors and cutting-edge applications reported in the last 10 years. Micro- and nanosensors are divided into four categories depending on the transduction mechanism, e.g., amperometric, impedimetric, potentiometric, and transistor-based, to best guide the reader through the different detection strategies and highlight major advancements as well as still unaddressed demands in electrochemical sensing.
Graphical Abstract
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5
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McCarty G, Dunaway LE, Denison JD, Sombers LA. Neurotransmitter Readily Escapes Detection at the Opposing Microelectrode Surface in Typical Amperometric Measurements of Exocytosis at Single Cells. Anal Chem 2022; 94:9548-9556. [PMID: 35750055 PMCID: PMC9281607 DOI: 10.1021/acs.analchem.2c00060] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For decades, carbon-fiber microelectrodes have been used in amperometric measurements of neurotransmitter release at a wide variety of cell types, providing a tremendous amount of valuable information on the mechanisms involved in dense-core vesicle fusion. The electroactive molecules that are released can be detected at the opposing microelectrode surface, allowing for precise quantification as well as detailed kinetic information on the stages of neurotransmitter release. However, it remains unclear how much of the catecholamine that is released into the artificial synapse escapes detection. This work examines two separate mechanisms by which released neurotransmitter goes undetected in a typical amperometric measurement. First, diffusional loss is assessed by monitoring exocytosis at single bovine chromaffin cells using carbon-fiber microelectrodes fabricated in a recessed (cavity) geometry. This creates a microsampling vial that minimizes diffusional loss of analyte prior to detection. More molecules were detected per exocytotic release event when using a recessed cavity sensor as compared to the conventional configuration. In addition, pharmacological inhibition of the norepinephrine transporter (NET), which serves to remove catecholamine from the extracellular space, increased both the size and the time course of individual amperometric events. Overall, this study characterizes distinct physical and biological mechanisms by which released neurotransmitter escapes detection at the opposing microelectrode surface, while also revealing an important role for the NET in "presynaptic" modulation of neurotransmitter release.
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Affiliation(s)
- Gregory
S. McCarty
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Lars E. Dunaway
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - J. Dylan Denison
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Leslie A. Sombers
- Department
of Chemistry and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
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6
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Wang M, Liu Y, Du J, Zhou J, Cao L, Li X. Cisplatin Inhibits Neurotransmitter Release during Exocytosis from Single Chromaffin Cells Monitored with Single Cell Amperometry. ELECTROANAL 2022. [DOI: 10.1002/elan.202100398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mengying Wang
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
| | - Yuying Liu
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
| | - Jinchang Du
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
| | - Junlan Zhou
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
| | - Lijiao Cao
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
| | - Xianchan Li
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics Minzu University of China) National Ethnic Affairs Commission Beijing 100081 China
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences Minzu University of China Beijing 100081 China
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7
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Sensitive detection of electrophysiology and dopamine vesicular exocytosis of hESC-Derived dopaminergic neurons using multifunctional microelectrode array. Biosens Bioelectron 2022; 209:114263. [DOI: 10.1016/j.bios.2022.114263] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/24/2022] [Accepted: 04/06/2022] [Indexed: 12/30/2022]
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8
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Tricase A, Imbriano A, Macchia E, Sarcina L, Scandurra C, Torricelli F, Cioffi N, Torsi L, Bollella P. Enzyme based amperometric wide field biosensors: Is single‐molecule detection possible? ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100215] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Angelo Tricase
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Anna Imbriano
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Eleonora Macchia
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
| | - Lucia Sarcina
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Cecilia Scandurra
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Fabrizio Torricelli
- Dipartimento Ingegneria dell'Informazione Università degli Studi di Brescia Brescia Italy
| | - Nicola Cioffi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Luisa Torsi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
- Centre for Colloid and Surface Science Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Paolo Bollella
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science Università degli Studi di Bari “Aldo Moro” Bari Italy
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9
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Park H, Park JH. In Situ Monitoring of Collision and Recollision Events of Single Attoliter Droplets via Single-Entity Electrochemistry. J Phys Chem Lett 2020; 11:10250-10255. [PMID: 33210920 DOI: 10.1021/acs.jpclett.0c02723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We describe a simple method for real-time observation of collision and recollision behavior of a single aqueous attoliter droplet in an organic solvent through single-entity electrochemistry. The dynamics and morphology of the droplet after the collision event at the Au ultramicroelectrode (Au-UME) were monitored by consecutive cyclic voltammetry and amperometric current-time measurements. By sequentially applying oxidative potential and reductive potential at the Au-UME in the presence of attoliter droplets containing reversible redox species (e.g., ferrocyanide), we successfully detected the oxidative collision spike and its reductive recollision spike successively owing to the reversible redox reactions inside the droplet. Because the redox species was dissolved in a reduced form, the reductive collision spikes observed are the direct evidence that the water droplets colliding at the electrode surface are detached after the oxidation reaction. The collided droplet properties, such as size change and contact area, are also investigated and discussed.
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Affiliation(s)
- Heekyung Park
- Department of Chemistry, Chungbuk National University, Cheongju 28644, South Korea
| | - Jun Hui Park
- Department of Chemistry, Chungbuk National University, Cheongju 28644, South Korea
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10
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Rusheen AE, Gee TA, Jang DP, Blaha CD, Bennet KE, Lee KH, Heien ML, Oh Y. Evaluation of electrochemical methods for tonic dopamine detection in vivo. Trends Analyt Chem 2020; 132:116049. [PMID: 33597790 PMCID: PMC7885180 DOI: 10.1016/j.trac.2020.116049] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dysfunction in dopaminergic neuronal systems underlie a number of neurologic and psychiatric disorders such as Parkinson's disease, drug addiction, and schizophrenia. Dopamine systems communicate via two mechanisms, a fast "phasic" release (sub-second to second) that is related to salient stimuli and a slower "tonic" release (minutes to hours) that regulates receptor tone. Alterations in tonic levels are thought to be more critically important in enabling normal motor, cognitive, and motivational functions, and dysregulation in tonic dopamine levels are associated with neuropsychiatric disorders. Therefore, development of neurochemical recording techniques that enable rapid, selective, and quantitative measurements of changes in tonic extracellular levels are essential in determining the role of dopamine in both normal and disease states. Here, we review state-of-the-art advanced analytical techniques for in vivo detection of tonic levels, with special focus on electrochemical techniques for detection in humans.
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Affiliation(s)
- Aaron E. Rusheen
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, United States
- Medical Scientist Training Program, Mayo Clinic, Rochester, MN, 55905, United States
| | - Taylor A. Gee
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, United States
| | - Dong P. Jang
- Department of Biomedical Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Charles D. Blaha
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, United States
| | - Kevin E. Bennet
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, United States
- Division of Engineering, Mayo Clinic, Rochester, MN, 55905, United States
| | - Kendall H. Lee
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, United States
- Department of Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, United States
| | - Michael L. Heien
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, United States
| | - Yoonbae Oh
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55905, United States
- Department of Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, United States
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11
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McCormick HK, Dick JE. Nanoelectrochemical quantification of single-cell metabolism. Anal Bioanal Chem 2020; 413:17-24. [PMID: 32915282 DOI: 10.1007/s00216-020-02899-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/10/2020] [Accepted: 08/18/2020] [Indexed: 12/12/2022]
Abstract
At the most fundamental level, the behavior of tissue is governed by the activity of its single cells. A detailed examination of single-cell biology is necessary in order to gain a deeper understanding of disease progression. While single-cell genomics and transcriptomics are mature due to robust amplification strategies, the metabolome is difficult to quantify. Nanoelectrochemical techniques stand poised to quantify single-cell metabolism as a result of the fabrication of nanoelectrodes, which allow one to make intracellular electrochemical measurements. This article is concerned with intracellular nanoelectrochemistry, focusing on the sensitive and selective quantification of various metabolites within a single, living cell. We will review the strong literature behind this field, discuss the potential deleterious effects of passing charge inside cells, and provide future outlooks for this promising avenue of inquiry. We also present a mathematical relationship based on Faraday's Law and bulk electrolysis theory to examine the consumption of analyte within a cell due to passing charge at the nanotip.Graphical abstract.
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Affiliation(s)
- Hadley K McCormick
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Jeffrey E Dick
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA. .,Lineberger Comprehensive Cancer Center, School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
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12
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Qin X, Li ZQ, Zhou Y, Pan JB, Li J, Wang K, Xu JJ, Xia XH. Fabrication of High-Density and Superuniform Gold Nanoelectrode Arrays for Electrochemical Fluorescence Imaging. Anal Chem 2020; 92:13493-13499. [DOI: 10.1021/acs.analchem.0c02918] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiang Qin
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zhong-Qiu Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yue Zhou
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jian-Bin Pan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jian Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Kang Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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13
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Keighron JD, Wang Y, Cans AS. Electrochemistry of Single-Vesicle Events. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2020; 13:159-181. [PMID: 32151142 DOI: 10.1146/annurev-anchem-061417-010032] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Neuronal transmission relies on electrical signals and the transfer of chemical signals from one neuron to another. Chemical messages are transmitted from presynaptic neurons to neighboring neurons through the triggered fusion of neurotransmitter-filled vesicles with the cell plasma membrane. This process, known as exocytosis, involves the rapid release of neurotransmitter solutions that are detected with high affinity by the postsynaptic neuron. The type and number of neurotransmitters released and the frequency of vesicular events govern brain functions such as cognition, decision making, learning, and memory. Therefore, to understand neurotransmitters and neuronal function, analytical tools capable of quantitative and chemically selective detection of neurotransmitters with high spatiotemporal resolution are needed. Electrochemistry offers powerful techniques that are sufficiently rapid to allow for the detection of exocytosis activity and provides quantitative measurements of vesicle neurotransmitter content and neurotransmitter release from individual vesicle events. In this review, we provide an overview of the most commonly used electrochemical methods for monitoring single-vesicle events, including recent developments and what is needed for future research.
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Affiliation(s)
- Jacqueline D Keighron
- Department of Chemical and Biological Sciences, New York Institute of Technology, Old Westbury, New York 11568, USA
| | - Yuanmo Wang
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden;
| | - Ann-Sofie Cans
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden;
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14
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Tavakolian-Ardakani Z, Hosu O, Cristea C, Mazloum-Ardakani M, Marrazza G. Latest Trends in Electrochemical Sensors for Neurotransmitters: A Review. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2037. [PMID: 31052309 PMCID: PMC6539656 DOI: 10.3390/s19092037] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/07/2019] [Accepted: 04/25/2019] [Indexed: 01/19/2023]
Abstract
Neurotransmitters are endogenous chemical messengers which play an important role in many of the brain functions, abnormal levels being correlated with physical, psychotic and neurodegenerative diseases such as Alzheimer's, Parkinson's, and Huntington's disease. Therefore, their sensitive and robust detection is of great clinical significance. Electrochemical methods have been intensively used in the last decades for neurotransmitter detection, outclassing more complicated analytical techniques such as conventional spectrophotometry, chromatography, fluorescence, flow injection, and capillary electrophoresis. In this manuscript, the most successful and promising electrochemical enzyme-free and enzymatic sensors for neurotransmitter detection are reviewed. Focusing on the activity of worldwide researchers mainly during the last ten years (2010-2019), without pretending to be exhaustive, we present an overview of the progress made in sensing strategies during this time. Particular emphasis is placed on nanostructured-based sensors, which show a substantial improvement of the analytical performances. This review also examines the progress made in biosensors for neurotransmitter measurements in vitro, in vivo and ex vivo.
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Affiliation(s)
- Zahra Tavakolian-Ardakani
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy.
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran.
| | - Oana Hosu
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy.
- Department of Analytical Chemistry, Faculty of Pharmacy, "Iuliu Haţieganu" University of Medicine and Pharmacy, 400349 Pasteur 4 Cluj-Napoca, Romania.
| | - Cecilia Cristea
- Department of Analytical Chemistry, Faculty of Pharmacy, "Iuliu Haţieganu" University of Medicine and Pharmacy, 400349 Pasteur 4 Cluj-Napoca, Romania.
| | | | - Giovanna Marrazza
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Fi), Italy.
- Instituto Nazionale Biostrutture e Biosistemi (INBB), Unit of Florence, Viale delle Medaglie d'Oro 305, 00136 Roma, Italy.
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15
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Taleat Z, Larsson A, Ewing AG. Anticancer Drug Tamoxifen Affects Catecholamine Transmitter Release and Storage from Single Cells. ACS Chem Neurosci 2019; 10:2060-2069. [PMID: 30763068 DOI: 10.1021/acschemneuro.8b00714] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Electrochemical measurements of exocytosis combined with intracellular vesicle impact electrochemical cytometry have been used to evaluate the effect of an anticancer drug, tamoxifen, on catecholamine release at the single-cell level. Tamoxifen has been used for over 40 years to treat estrogen receptor-positive breast cancers during both early stages of the disease and in the adjuvant setting. Tamoxifen causes memory and cognitive dysfunction, but the reasons for the cognitive impairment and memory problems induced by this anticancer drug are not well-known. We show that tamoxifen, through a nongenomic mechanism, can modulate both exocytosis and vesicle catecholamine storage in a model cell line. The results indicate that exocytosis is inhibited at high concentrations of tamoxifen and is stimulated at low levels. Tamoxifen also elicits a significant concentration-dependent change in total catecholamine content of single vesicles, while sub-nanomolar concentrations of the drug have stimulatory activity on the catecholamine content of vesicles. In addition, it has profound effects on storage at higher concentrations. Tamoxifen also reduces the intracellular free Ca2+ but only at micromolar concentration, by acting on voltage-gated Ca2+ channels, which likely affects neurotransmitter secretion.
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Affiliation(s)
- Zahra Taleat
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Anna Larsson
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Andrew G. Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
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16
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Xi Y, Ji B, Guo Z, Li W, Liu J. Fabrication and Characterization of Micro-Nano Electrodes for Implantable BCI. MICROMACHINES 2019; 10:mi10040242. [PMID: 30979081 PMCID: PMC6523908 DOI: 10.3390/mi10040242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 03/29/2019] [Accepted: 04/08/2019] [Indexed: 02/07/2023]
Abstract
Signal recording and stimulation with high spatial and temporal resolution are of increasing interest with the development of implantable brain-computer interfaces (BCIs). However, implantable BCI technology still faces challenges in the biocompatibility and long-term stability of devices after implantation. Due to the cone structure, needle electrodes have advantages in the biocompatibility and stability as nerve recording electrodes. This paper develops the fabrication of Ag needle micro/nano electrodes with a laser-assisted pulling method and modifies the electrode surface by electrochemical oxidation. A significant impedance reduction of the modified Ag/AgCl electrodes compared to the Ag electrodes is demonstrated by the electrochemical impedance spectrum (EIS). Furthermore, the stability of modified Ag/AgCl electrodes is confirmed by cyclic voltammogram (CV) scanning. These findings suggest that these micro/nano electrodes have a great application prospect in neural interfaces.
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Affiliation(s)
- Ye Xi
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Bowen Ji
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Zhejun Guo
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wen Li
- Department of Electrical and Computer Engineering, College of Engineering, Michigan State University, East Lansing, MI 48823, USA.
| | - Jingquan Liu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, China.
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17
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Tomagra G, Picollo F, Battiato A, Picconi B, De Marchis S, Pasquarelli A, Olivero P, Marcantoni A, Calabresi P, Carbone E, Carabelli V. Quantal Release of Dopamine and Action Potential Firing Detected in Midbrain Neurons by Multifunctional Diamond-Based Microarrays. Front Neurosci 2019; 13:288. [PMID: 31024230 PMCID: PMC6465646 DOI: 10.3389/fnins.2019.00288] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/11/2019] [Indexed: 12/20/2022] Open
Abstract
Micro-Graphitic Single Crystal Diamond Multi Electrode Arrays (μG-SCD-MEAs) have so far been used as amperometric sensors to detect catecholamines from chromaffin cells and adrenal gland slices. Besides having time resolution and sensitivity that are comparable with carbon fiber electrodes, that represent the gold standard for amperometry, μG-SCD-MEAs also have the advantages of simultaneous multisite detection, high biocompatibility and implementation of amperometric/potentiometric protocols, aimed at monitoring exocytotic events and neuronal excitability. In order to adapt diamond technology to record neuronal activity, the μG-SCD-MEAs in this work have been interfaced with cultured midbrain neurons to detect electrical activity as well as quantal release of dopamine (DA). μG-SCD-MEAs are based on graphitic sensing electrodes that are embedded into the diamond matrix and are fabricated using MeV ion beam lithography. Two geometries have been adopted, with 4 × 4 and 8 × 8 microelectrodes (20 μm × 3.5 μm exposed area, 200 μm spacing). In the amperometric configuration, the 4 × 4 μG-SCD-MEAs resolved quantal exocytosis from midbrain dopaminergic neurons. KCl-stimulated DA release occurred as amperometric spikes of 15 pA amplitude and 0.5 ms half-width, at a mean frequency of 0.4 Hz. When used as potentiometric multiarrays, the 8 × 8 μG-SCD-MEAs detected the spontaneous firing activity of midbrain neurons. Extracellularly recorded action potentials (APs) had mean amplitude of ∼-50 μV and occurred at a mean firing frequency of 0.7 Hz in 67% of neurons, while the remaining fired at 6.8 Hz. Comparable findings were observed using conventional MEAs (0.9 and 6.4 Hz, respectively). To test the reliability of potentiometric recordings with μG-SCD-MEAs, the D2-autoreceptor modulation of firing was investigated by applying levodopa (L-DOPA, 20 μM), and comparing μG-SCD-MEAs, conventional MEAs and current-clamp recordings. In all cases, L-DOPA reduced the spontaneous spiking activity in most neurons by 70%, while the D2-antagonist sulpiride reversed this effect. Cell firing inhibition was generally associated with increased APs amplitude. A minority of neurons was either insensitive to, or potentiated by L-DOPA, suggesting that AP recordings originate from different midbrain neuronal subpopulations and reveal different modulatory pathways. Our data demonstrate, for the first time, that μG-SCD-MEAs are multi-functional biosensors suitable to resolve real-time DA release and AP firing in in vitro neuronal networks.
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Affiliation(s)
- Giulia Tomagra
- Department of Drug and Science Technology and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy
| | - Federico Picollo
- Department of Physics and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy.,Istituto Nazionale di Fisica Nucleare - Sezione di Torino, Turin, Italy
| | - Alfio Battiato
- Istituto Nazionale di Fisica Nucleare - Sezione di Torino, Turin, Italy
| | - Barbara Picconi
- Experimental Neurophysiology Laboratory, IRCCS San Raffaele Pisana, University San Raffaele, Rome, Italy.,University San Raffaele, Rome, Italy
| | - Silvia De Marchis
- Department of Life Sciences and Systems Biology and "NICO" Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Turin, Italy
| | | | - Paolo Olivero
- Department of Physics and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy.,Istituto Nazionale di Fisica Nucleare - Sezione di Torino, Turin, Italy
| | - Andrea Marcantoni
- Department of Drug and Science Technology and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy
| | - Paolo Calabresi
- Neurological Clinic, Department of Medicine, Hospital Santa Maria della Misericordia, University of Perugia, Perugia, Italy
| | - Emilio Carbone
- Department of Drug and Science Technology and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy
| | - Valentina Carabelli
- Department of Drug and Science Technology and "NIS" Inter-departmental Centre, University of Torino, Turin, Italy
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18
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Liu X, Tong Y, Fang PP. Recent development in amperometric measurements of vesicular exocytosis. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.01.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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19
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20
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Clinical implications and electrochemical biosensing of monoamine neurotransmitters in body fluids, in vitro, in vivo, and ex vivo models. Biosens Bioelectron 2018; 121:137-152. [DOI: 10.1016/j.bios.2018.09.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/25/2018] [Accepted: 09/01/2018] [Indexed: 12/13/2022]
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21
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Xiao T, Li X, Wei H, Ji W, Yue Q, Yu P, Mao L. In Vivo Monitoring of Oxygen Fluctuation Simultaneously at Multiple Sites of Rat Cortex during Spreading Depression. Anal Chem 2018; 90:13783-13789. [DOI: 10.1021/acs.analchem.8b04348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tongfang Xiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
| | - Xianchan Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
| | - Huan Wei
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenliang Ji
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
| | - Qingwei Yue
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences (CAS), CAS Research/Education Center for Excellence in Molecule Science, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Carbon Nanoelectrodes for the Electrochemical Detection of Neurotransmitters. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2018; 2018. [PMID: 34306762 PMCID: PMC8301601 DOI: 10.1155/2018/3679627] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Carbon-based electrodes have been developed for the detection of neurotransmitters over the past 30 years using voltammetry and amperometry. The traditional electrode for neurotransmitter detection is the carbon fiber microelectrode (CFME). The carbon-based electrode is suitable for in vivo neurotransmitter detection due to the fact that it is biocompatible and relatively small in surface area. The advent of nanoscale electrodes is in high demand due to smaller surface areas required to target specific brain regions that are also minimally invasive and cause relatively low tissue damage when implanted into living organisms. Carbon nanotubes (CNTs), carbon nanofibers, carbon nanospikes, and carbon nanopetals among others have all been utilized for this purpose. Novel electrode materials have also required novel insulations such as glass, epoxy, and polyimide coated fused silica capillaries for their construction and usage. Recent research developments have yielded a wide array of carbon nanoelectrodes with superior properties and performances in comparison to traditional electrode materials. These electrodes have thoroughly enhanced neurotransmitter detection allowing for the sensing of biological compounds at lower limits of detection, fast temporal resolution, and without surface fouling. This will allow for greater understanding of several neurological disease states based on the detection of neurotransmitters.
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23
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Eßmann V, Santana Santos C, Tarnev T, Bertotti M, Schuhmann W. Scanning Bipolar Electrochemical Microscopy. Anal Chem 2018; 90:6267-6274. [DOI: 10.1021/acs.analchem.8b00928] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Vera Eßmann
- Analytical Chemistry − Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätßtrasse 150, D-44780 Bochum, Germany
| | - Carla Santana Santos
- Analytical Chemistry − Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätßtrasse 150, D-44780 Bochum, Germany
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes, 748 05513-970, São Paulo, Brazil
| | - Tsvetan Tarnev
- Analytical Chemistry − Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätßtrasse 150, D-44780 Bochum, Germany
| | - Mauro Bertotti
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Professor Lineu Prestes, 748 05513-970, São Paulo, Brazil
| | - Wolfgang Schuhmann
- Analytical Chemistry − Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum, Universitätßtrasse 150, D-44780 Bochum, Germany
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24
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Zhang J, Zhou J, Pan R, Jiang D, Burgess JD, Chen HY. New Frontiers and Challenges for Single-Cell Electrochemical Analysis. ACS Sens 2018; 3:242-250. [PMID: 29276834 DOI: 10.1021/acssensors.7b00711] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Previous measurements of cell populations might obscure many important cellular differences, and new strategies for single-cell analyses are urgently needed to re-examine these fundamental biological principles for better diagnosis and treatment of diseases. Electrochemistry is a robust technique for the analysis of single living cells that has the advantages of minor interruption of cellular activity and provides the capability of high spatiotemporal resolution. The achievements of the past 30 years have revealed significant information about the exocytotic events of single cells to elucidate the mechanisms of cellular activity. Currently, the rapid developments of micro/nanofabrication and optoelectronic technologies drive the development of multifunctional electrodes and novel electrochemical approaches with higher resolution for single cells. In this Perspective, three new frontiers in this field, namely, electrochemical microscopy, intracellular analysis, and single-cell analysis in a biological system (i.e., neocortex and retina), are reviewed. The unique features and remaining challenges of these techniques are discussed.
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Affiliation(s)
- Jingjing Zhang
- The
State Key Laboratory of Analytical Chemistry for Life Science, School
of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210093, China
| | - Junyu Zhou
- The
State Key Laboratory of Analytical Chemistry for Life Science, School
of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210093, China
| | - Rongrong Pan
- The
State Key Laboratory of Analytical Chemistry for Life Science, School
of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210093, China
| | - Dechen Jiang
- The
State Key Laboratory of Analytical Chemistry for Life Science, School
of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210093, China
| | - James D. Burgess
- Department
of Medical Laboratory, Imaging, and Radiologic Sciences, College of
Allied Health Sciences, Augusta University, Augusta, Georgia 30912, United States
| | - Hong-Yuan Chen
- The
State Key Laboratory of Analytical Chemistry for Life Science, School
of Chemistry and Chemical Engineering, Nanjing University, Jiangsu 210093, China
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25
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Affiliation(s)
- Sonja M. Weiz
- Institute for Integrative Nanosciences (IIN); IFW Dresden; Helmholtzstraße 20 01069 Dresden Germany
| | - Mariana Medina-Sánchez
- Institute for Integrative Nanosciences (IIN); IFW Dresden; Helmholtzstraße 20 01069 Dresden Germany
| | - Oliver G. Schmidt
- Institute for Integrative Nanosciences (IIN); IFW Dresden; Helmholtzstraße 20 01069 Dresden Germany
- Material Systems for Nanoelectronics; Chemnitz University of Technology; Reichenhainer Straße 70 09107 Chemnitz Germany
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26
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Patel N, Fagan-Murphy A, Covill D, Patel BA. 3D Printed Molds Encompassing Carbon Composite Electrodes To Conduct Multisite Monitoring in the Entire Colon. Anal Chem 2017; 89:11690-11696. [DOI: 10.1021/acs.analchem.7b03148] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nirav Patel
- School
of Pharmacy and Biomolecular Sciences, ‡Centre for Stress and Age-Related
Diseases, and §School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4AT, U.K
| | - Aidan Fagan-Murphy
- School
of Pharmacy and Biomolecular Sciences, ‡Centre for Stress and Age-Related
Diseases, and §School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4AT, U.K
| | - Derek Covill
- School
of Pharmacy and Biomolecular Sciences, ‡Centre for Stress and Age-Related
Diseases, and §School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4AT, U.K
| | - Bhavik Anil Patel
- School
of Pharmacy and Biomolecular Sciences, ‡Centre for Stress and Age-Related
Diseases, and §School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4AT, U.K
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27
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Gillis KD, Liu XA, Marcantoni A, Carabelli V. Electrochemical measurement of quantal exocytosis using microchips. Pflugers Arch 2017; 470:97-112. [PMID: 28866728 DOI: 10.1007/s00424-017-2063-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 08/21/2017] [Accepted: 08/23/2017] [Indexed: 01/30/2023]
Abstract
Carbon-fiber electrodes (CFEs) are the gold standard for quantifying the release of oxidizable neurotransmitters from single vesicles and single cells. Over the last 15 years, microfabricated devices have emerged as alternatives to CFEs that offer the possibility of higher throughput, subcellular spatial resolution of exocytosis, and integration with other techniques for probing exocytosis including microfluidic cell handling and solution exchange, optical imaging and stimulation, and electrophysiological recording and stimulation. Here we review progress in developing electrochemical electrode devices capable of resolving quantal exocytosis that are fabricated using photolithography.
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Affiliation(s)
- Kevin D Gillis
- Department of Bioengineering, University of Missouri, Columbia, MO, USA.
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA.
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA.
| | - Xin A Liu
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Andrea Marcantoni
- Department of Drug Science and "NIS" Inter-departmental Centre, University of Torino, Torino, Italy
| | - Valentina Carabelli
- Department of Drug Science and "NIS" Inter-departmental Centre, University of Torino, Torino, Italy
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28
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Zhang H, Oellers T, Feng W, Abdulazim T, Saw EN, Ludwig A, Levkin PA, Plumeré N. High-Density Droplet Microarray of Individually Addressable Electrochemical Cells. Anal Chem 2017; 89:5832-5839. [DOI: 10.1021/acs.analchem.7b00008] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Huijie Zhang
- Center
for Electrochemical Sciences—CES, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Tobias Oellers
- Chair
of MEMS Materials, Institute for Materials, Faculty of Mechanical
Engineering, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Wenqian Feng
- Institute
of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Tarik Abdulazim
- Center
for Electrochemical Sciences—CES, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - En Ning Saw
- Center
for Electrochemical Sciences—CES, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Alfred Ludwig
- Chair
of MEMS Materials, Institute for Materials, Faculty of Mechanical
Engineering, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
| | - Pavel A. Levkin
- Institute
of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
- Institute
of Organic Chemistry, Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Nicolas Plumeré
- Center
for Electrochemical Sciences—CES, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany
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29
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Carabelli V, Marcantoni A, Picollo F, Battiato A, Bernardi E, Pasquarelli A, Olivero P, Carbone E. Planar Diamond-Based Multiarrays to Monitor Neurotransmitter Release and Action Potential Firing: New Perspectives in Cellular Neuroscience. ACS Chem Neurosci 2017; 8:252-264. [PMID: 28027435 DOI: 10.1021/acschemneuro.6b00328] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
High biocompatibility, outstanding electrochemical responsiveness, inertness, and transparency make diamond-based multiarrays (DBMs) first-rate biosensors for in vitro detection of electrochemical and electrical signals from excitable cells together, with potential for in vivo applications as neural interfaces and prostheses. Here, we will review the electrochemical and physical properties of various DBMs and how these devices have been employed for recording released neurotransmitter molecules and all-or-none action potentials from living cells. Specifically, we will overview how DBMs can resolve localized exocytotic events from subcellular compartments using high-density microelectrode arrays (MEAs), or monitoring oxidizable neurotransmitter release from populations of cells in culture and tissue slices using low-density MEAs. Interfacing DBMs with excitable cells is currently leading to the promising opportunity of recording electrical signals as well as creating neuronal interfaces through the same device. Given the recent increasingly growing development of newly available DBMs of various geometries to monitor electrical activity and neurotransmitter release in a variety of excitable and neuronal tissues, the discussion will be limited to planar DBMs.
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Affiliation(s)
- Valentina Carabelli
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
| | - Andrea Marcantoni
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
| | - Federico Picollo
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), 10125 sez. Torino, Italy
| | - Alfio Battiato
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), 10125 sez. Torino, Italy
| | - Ettore Bernardi
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), 10125 sez. Torino, Italy
| | - Alberto Pasquarelli
- Institute
of Electron Devices and Circuits, Ulm University, 89081 Ulm, Germany
| | - Paolo Olivero
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), 10125 sez. Torino, Italy
| | - Emilio Carbone
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della Materia (CNISM), 10125 Torino Unit, Italy
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30
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Ribeiro JA, Fernandes PM, Pereira CM, Silva F. Electrochemical sensors and biosensors for determination of catecholamine neurotransmitters: A review. Talanta 2016; 160:653-679. [DOI: 10.1016/j.talanta.2016.06.066] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/28/2016] [Accepted: 06/30/2016] [Indexed: 01/03/2023]
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31
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Single cell amperometry reveals curcuminoids modulate the release of neurotransmitters during exocytosis from PC12 cells. J Electroanal Chem (Lausanne) 2016; 781:30-35. [PMID: 28579928 DOI: 10.1016/j.jelechem.2016.10.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We used single cell amperometry to examine whether curcumin and bisdemethoxycurcumin (BDMC), substances that are suggested to affect learning and memory, can modulate monoamine release from PC12 cells. Our results indicate both curcumin and BDMC need long-term treatment (72 h in this study) to influence exocytosis effectively. By analyzing the parameters calculated from single exocytosis events, it can be concluded that curcumin and BDMC affect exocytosis through different mechanisms. Curcumin accelerates the event dynamics with no significant change of the monoamine amount released from single exocytotic events, whereas BDMC attenuates the amount from single exocytotic event with no significant change of the event dynamics. This comparison of the effect of curcumin and BDMC on exocytosis at the single cell level brings insight into their different mechanisms, which might lead to different biological actions. The effect of curcumin and BDMC on the opening and closing of the exocytotic fusion pore were also investigated. These results might be helpful for understanding the improvement of learning and memory and the anti-depression properties of curcuminoids.
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Abstract
Exocytosis is the fundamental process by which cells communicate with each other. The events that lead up to the fusion of a vesicle loaded with chemical messenger with the cell membrane were the subject of a Nobel Prize in 2013. However, the processes occurring after the initial formation of a fusion pore are very much still in debate. The release of chemical messenger has traditionally been thought to occur through full distention of the vesicle membrane, hence assuming exocytosis to be all or none. In contrast to the all or none hypothesis, here we discuss the evidence that during exocytosis the vesicle-membrane pore opens to release only a portion of the transmitter content during exocytosis and then close again. This open and closed exocytosis is distinct from kiss-and-run exocytosis, in that it appears to be the main content released during regular exocytosis. The evidence for this partial release via open and closed exocytosis is presented considering primarily the quantitative evidence obtained with amperometry.
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33
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Li X, Dunevall J, Ewing AG. Using Single-Cell Amperometry To Reveal How Cisplatin Treatment Modulates the Release of Catecholamine Transmitters during Exocytosis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602977] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xianchan Li
- Department of Chemistry and Molecular Biology; University of Gothenburg; Kemivägen 10 41296 Gothenburg Sweden
| | - Johan Dunevall
- Department of Chemistry and Chemical Engineering; Chalmers University of Technology; Kemivägen 10 41296 Gothenburg Sweden
| | - Andrew G. Ewing
- Department of Chemistry and Molecular Biology; University of Gothenburg; Kemivägen 10 41296 Gothenburg Sweden
- Department of Chemistry and Chemical Engineering; Chalmers University of Technology; Kemivägen 10 41296 Gothenburg Sweden
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34
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Li X, Dunevall J, Ewing AG. Using Single-Cell Amperometry To Reveal How Cisplatin Treatment Modulates the Release of Catecholamine Transmitters during Exocytosis. Angew Chem Int Ed Engl 2016; 55:9041-4. [PMID: 27239950 DOI: 10.1002/anie.201602977] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Indexed: 11/08/2022]
Abstract
The pretreatment of cultured pheochromocytoma (PC12) cells with cis-diamminedichloroplatinum (cisplatin), an anti-cancer drug, influences the exocytotic ability of the cells in a dose-dependent manner. Low concentrations of cisplatin stimulate catecholamine release whereas high concentrations inhibit it. Single-cell amperometry reflects that 2 μm cisplatin treatment increases the frequency of exocytotic events and reduces their duration, whereas 100 μm cisplatin treatment decreases the frequency of exocytotic events and increases their duration. Furthermore, the stability of the initial fusion pore that is formed in the lipid membrane during exocytosis is also regulated differentially by different cisplatin concentrations. This study thus suggests that cisplatin influences exocytosis by multiple mechanisms.
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Affiliation(s)
- Xianchan Li
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
| | - Johan Dunevall
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296, Gothenburg, Sweden
| | - Andrew G Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden. , .,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Kemivägen 10, 41296, Gothenburg, Sweden. ,
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35
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Lin Y, Wang K, Xu Y, Li L, Luo J, Wang C. Facile development of Au-ring microelectrode for in vivo analysis using non-toxic polydopamine as multifunctional material. Biosens Bioelectron 2016; 78:274-280. [DOI: 10.1016/j.bios.2015.11.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/13/2015] [Accepted: 11/20/2015] [Indexed: 10/22/2022]
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36
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Kara A, Reitz A, Mathault J, Mehou-Loko S, Amirdehi MA, Miled A, Greener J. Electrochemical imaging for microfluidics: a full-system approach. LAB ON A CHIP 2016; 16:1081-1087. [PMID: 26912254 DOI: 10.1039/c6lc00077k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Electrochemistry is developed as a new chemical imaging modality for microfluidics. The technique is based on multipoint voltammetry using an embedded 20 × 10 miniature electrode array implemented on a customized printed circuit board. Electrode durability was enhanced by chemical modification of the electrode surfaces, which enabled continuous, stable use for over 2 months. A system-level approach enables automatic calibration, data acquisition and data processing through a graphical user interface. Following data processing, redox currents and peak positions are extracted from location-specific voltammograms and converted into pixels of an "electrochemical image". The system is validated by imaging steady-state and dynamic laminar flow patterns of flow-confined solutions of the redox pairs Fe(CN)6(3-/4-) or multi-redox environments that include coflowing Ru(NH3)6(2+/3+) solutions. The images obtained are compared with flow simulations and optical images for validation. A strategy to achieve measurements with spatial resolution smaller than the individual electrodes is also demonstrated as an avenue to enhance image spatial resolution. It is expected that this new approach to chemical imaging will expand the applicability of microfluidics in certain areas of chemistry and biology without requiring expertise in electrochemistry.
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Affiliation(s)
- Adnane Kara
- Département de Chimie, Université Laval, Québec, Canada.
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37
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Siraj S, McRae CR, Wong DK. Effective activation of physically small carbon electrodes by n-butylsilane reduction. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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38
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Amatore C, Delacotte J, Guille-Collignon M, Lemaître F. Vesicular exocytosis and microdevices - microelectrode arrays. Analyst 2016; 140:3687-95. [PMID: 25803190 DOI: 10.1039/c4an01932f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Among all the analytical techniques capable of monitoring exocytosis in real time at the single cell level, electrochemistry (particularly amperometry at a constant potential) using ultramicroelectrodes has been demonstrated to be an important and convenient tool for more than two decades. Indeed, because the electrochemical sensor is located in the close vicinity of the emitting cell ("artificial synapse" configuration), much data can be gathered from the whole cell activity (secretion frequency) to the individual vesicular release (duration, fluxes or amount of molecules released) with an excellent sensitivity. However, such a single cell analysis and its intrinsic benefits are at the expense of the spatial resolution and/or the number of experiments. The quite recent development of microdevices/microsystems (and mainly the microelectrode arrays (MEAs)) offers in some way a complementary approach either by combining spectroscopy-microscopy or by implementing a multianalysis. Such developments are described and discussed in the present review over the 2005-2014 period.
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Affiliation(s)
- Christian Amatore
- Ecole Normale Supérieure-PSL Research University, Département de Chimie, Sorbonne Universités - UPMC Univ Paris 06, CNRS UMR 8640 PASTEUR, 24, rue Lhomond, 75005 Paris, France.
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39
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Wigström J, Dunevall J, Najafinobar N, Lovrić J, Wang J, Ewing AG, Cans AS. Lithographic Microfabrication of a 16-Electrode Array on a Probe Tip for High Spatial Resolution Electrochemical Localization of Exocytosis. Anal Chem 2016; 88:2080-7. [PMID: 26771211 DOI: 10.1021/acs.analchem.5b03316] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the lithographic microfabrication of a movable thin film microelectrode array (MEA) probe consisting of 16 platinum band electrodes placed on top of a supporting borosilicate glass substrate. These 1.2 μm wide electrodes were tightly packed and positioned parallel in two opposite rows within a 20 μm × 25 μm square area and with a distance less than 10 μm from the edge of the glass substrate. We demonstrate the ability to control and place the probe in close proximity to the surface of adherent bovine chromaffin cells and to amperometrically record single exocytosis release events with high spatiotemporal resolution. The two-dimensional position of single exocytotic events occurring in the center gap area separating the two rows of MEA band electrodes and that were codetected by electrodes in both rows was determined by analysis of the fractional detection of catecholamine released between electrodes and exploiting random walk simulations. Hence, two-dimensional electrochemical imaging recording of exocytosis release between the electrodes within this area was achieved. Similarly, by modeling the current spikes codetected by parallel adjacent band electrodes positioned in the same electrode row, a one-dimensional imaging of exocytosis with submicrometer resolution was accomplished within the area. The one- and two-dimensional electrochemical imaging using the MEA probe allowed for high spatial resolution of exocytosis activity and revealed heterogeneous release of catecholamine at the chromaffin cell surface.
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Affiliation(s)
- Joakim Wigström
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Johan Dunevall
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Neda Najafinobar
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Jelena Lovrić
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Jun Wang
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Andrew G Ewing
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
| | - Ann-Sofie Cans
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
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40
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Wang J, Ewing AG. Simultaneous study of subcellular exocytosis with individually addressable multiple microelectrodes. Analyst 2015; 139:3290-5. [PMID: 24740449 DOI: 10.1039/c4an00058g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the application of individually addressable microelectrode arrays (MEAs) to study the heterogeneity of cell exocytosis at the subcellular level. Multiple subcellular-size electrodes are covered by a single PC12 cell for the investigation of subcellular exocytosis. PC12 cells have been seeded and cultured on top of three kinds of MEAs containing 16, 25, or 36 square microelectrodes (4 μm width in a 4 by 4 MEA, 3 μm width in a 5 by 5 MEA, 2 μm width in a 6 by 6 MEA). After collagen coating, single cells were found to cover several electrodes and these were selected for the study of subcellular exocytosis. Amperometric results show that single cell and subcellular heterogeneity in single cell exocytosis can be electrochemically detected with these MEAs. The results also show that these MEAs are suitable for detecting fast chemical events at single cells, as well as for developing multifunctional electrochemical sensors.
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Affiliation(s)
- Jun Wang
- Department of Chemistry and Molecular Biology, University of Gothenburg, Sweden
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41
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Abstract
Carbon nanoelectrodes with tip diameters ranging from tens to hundreds of nanometers are fabricated by pyrolitic deposition of carbon films along the entire inner surfaces of pulled-glass pipettes. The pulled end of each glass pipette is then etched to expose a desired length (typically, a few micrometers) of carbon pipe. The carbon film provides an electrically conductive path from the nanoscopic carbon tip to the distal, macroscopic end of the pipette, bridging between the nanoscale tip and the macroscale handle, without a need for assembly. We used our nanoelectrodes to penetrate into individual cells and cell nuclei and measured the variations in the electrode impedance upon cell and nucleus penetration as well as the electrode impedance as a function of cell penetration depth. Theoretical predictions based on a simple circuit model were in good agreement with experimental data.
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Affiliation(s)
- Sean E. Anderson
- University of Pennsylvania, Department of Mechanical Engineering and Applied Mechanics, Philadelphia, PA 19104
| | - Haim H. Bau
- University of Pennsylvania, Department of Mechanical Engineering and Applied Mechanics, Philadelphia, PA 19104
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42
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Bucher ES, Wightman RM. Electrochemical Analysis of Neurotransmitters. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2015; 8:239-61. [PMID: 25939038 PMCID: PMC4728736 DOI: 10.1146/annurev-anchem-071114-040426] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Chemical signaling through the release of neurotransmitters into the extracellular space is the primary means of communication between neurons. More than four decades ago, Ralph Adams and his colleagues realized the utility of electrochemical methods for the study of easily oxidizable neurotransmitters, such as dopamine, norepinephrine, and serotonin and their metabolites. Today, electrochemical techniques are frequently coupled to microelectrodes to enable spatially resolved recordings of rapid neurotransmitter dynamics in a variety of biological preparations spanning from single cells to the intact brain of behaving animals. In this review, we provide a basic overview of the principles underlying constant-potential amperometry and fast-scan cyclic voltammetry, the most commonly employed electrochemical techniques, and the general application of these methods to the study of neurotransmission. We thereafter discuss several recent developments in sensor design and experimental methodology that are challenging the current limitations defining the application of electrochemical methods to neurotransmitter measurements.
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43
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Lemaître F, Guille Collignon M, Amatore C. Recent advances in Electrochemical Detection of Exocytosis. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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44
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Kai T, Chen S, Monterroso E, Hailu A, Zhou F. Microconcentric ring electrode/injector assembly for sensitive voltammetric analysis in single droplets of ultrasmall volumes. Anal Chem 2014; 86:8037-41. [PMID: 25065999 DOI: 10.1021/ac502316p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper describes the construction of a microring electrode concentric to an inner injection capillary for voltammetric determination of trace analytes in nanoliter- to picoliter-sized droplets. The gold microring is sandwiched between a pulled fused-silica capillary and borosilicate glass tubing. Compared to polymer-coated microring electrodes, the glass-encapsulated electrode is more robust and does not swell in organic solvents. Consequently, the microring electrode is suitable for voltammetric studies of redox-active species and their accompanying ion transfers between two immiscible solvents. Droplets of variable sizes can be conveniently dispensed from front-loaded sample plugs into an immiscible liquid, greatly simplifying the experimental procedure and facilitating analysis of samples of limited availability. The size of the microring and the volume of the droplet deduced from well-defined voltammograms correlate well with those estimated from their geometric dimensions. The thin-layer cell behavior can be attained with well-defined voltammetric peaks and small capacitive current. Exhaustive electrolysis in single droplets can be accomplished in short times (e.g., ∼85 s in a droplet of 1.42 nL at a microring of 11.4 μm in radius). Anodic stripping voltammetry of Ag deposited onto the microring electrode resulted in a detection limit of 0.13 fmol (14 fg) of Ag(+). The microring electrode/injector assembly can be polished repeatedly and is versatile for various applications (e.g., sample plugs can also be back-loaded via a rotary injection valve and an HPLC pump for flow injection analysis).
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Affiliation(s)
- Tianhan Kai
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan P. R. China 410083
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45
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Kätelhön E, Mayer D, Banzet M, Offenhäusser A, Wolfrum B. Nanocavity crossbar arrays for parallel electrochemical sensing on a chip. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1137-1143. [PMID: 25161846 PMCID: PMC4143123 DOI: 10.3762/bjnano.5.124] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 06/25/2014] [Indexed: 06/03/2023]
Abstract
We introduce a novel device for the mapping of redox-active compounds at high spatial resolution based on a crossbar electrode architecture. The sensor array is formed by two sets of 16 parallel band electrodes that are arranged perpendicular to each other on the wafer surface. At each intersection, the crossing bars are separated by a ca. 65 nm high nanocavity, which is stabilized by the surrounding passivation layer. During operation, perpendicular bar electrodes are biased to potentials above and below the redox potential of species under investigation, thus, enabling repeated subsequent reactions at the two electrodes. By this means, a redox cycling current is formed across the gap that can be measured externally. As the nanocavity devices feature a very high current amplification in redox cycling mode, individual sensing spots can be addressed in parallel, enabling high-throughput electrochemical imaging. This paper introduces the design of the device, discusses the fabrication process and demonstrates its capabilities in sequential and parallel data acquisition mode by using a hexacyanoferrate probe.
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Affiliation(s)
- Enno Kätelhön
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany. Current address: Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Dirk Mayer
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Marko Banzet
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Andreas Offenhäusser
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany
- Institute of Physics, RWTH Aachen University, 52074 Aachen, Germany
| | - Bernhard Wolfrum
- Institute of Bioelectronics (PGI-8/ICS-8) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany
- Institute of Physics, RWTH Aachen University, 52074 Aachen, Germany
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Gosso S, Turturici M, Franchino C, Colombo E, Pasquarelli A, Carbone E, Carabelli V. Heterogeneous distribution of exocytotic microdomains in adrenal chromaffin cells resolved by high-density diamond ultra-microelectrode arrays. J Physiol 2014; 592:3215-30. [PMID: 24879870 DOI: 10.1113/jphysiol.2014.274951] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Here we describe the ability of a high-density diamond microelectrode array targeted to resolve multi-site detection of fast exocytotic events from single cells. The array consists of nine boron-doped nanocrystalline diamond ultra-microelectrodes (9-Ch NCD-UMEA) radially distributed within a circular area of the dimensions of a single cell. The device can be operated in voltammetric or chronoamperometric configuration. Sensitivity to catecholamines, tested by dose-response calibrations, set the lowest detectable concentration of adrenaline to ∼5 μm. Catecholamine release from bovine or mouse chromaffin cells could be triggered by electrical stimulation or external KCl-enriched solutions. Spikes detected from the cell apex using carbon fibre microelectrodes showed an excellent correspondence with events measured at the bottom of the cell by the 9-Ch NCD-UMEA, confirming the ability of the array to resolve single quantal secretory events. Subcellular localization of exocytosis was provided by assigning each quantal event to one of the nine channels based on its location. The resulting mapping highlights the heterogeneous distribution of secretory activity in cell microdomains of 12-27 μm2. In bovine chromaffin cells, secretion was highly heterogeneous with zones of high and medium activity in 54% of the cell surface and zones of low or no activity in the remainder. The 'non-active' ('silent') zones covered 24% of the total and persisted for 6-8 min, indicating stable location. The 9-Ch NCD-UMEA therefore appears suitable for investigating the microdomain organization of neurosecretion with high spatial resolution.
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Affiliation(s)
- Sara Gosso
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy
| | - Marco Turturici
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy Department of Neuroscience, University of Turin, 10125, Turin, Italy
| | - Claudio Franchino
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy
| | - Elisabetta Colombo
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy Institute of Electron Devices and Circuits, University of Ulm, 89069, Ulm, Germany
| | - Alberto Pasquarelli
- Institute of Electron Devices and Circuits, University of Ulm, 89069, Ulm, Germany
| | - Emilio Carbone
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy
| | - Valentina Carabelli
- Department of Drug Science and Technology, NIS Center, University of Turin, 10125, Turin, Italy
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47
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Chen S, Zhang L, Long Y, Zhou F. Electroanalytical Sensors and Methods for Assays and Studies of Neurological Biomarkers. ELECTROANAL 2014. [DOI: 10.1002/elan.201400040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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48
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Wang J, Trouillon R, Dunevall J, Ewing AG. Spatial resolution of single-cell exocytosis by microwell-based individually addressable thin film ultramicroelectrode arrays. Anal Chem 2014; 86:4515-20. [PMID: 24712854 PMCID: PMC4014142 DOI: 10.1021/ac500443q] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/08/2014] [Indexed: 01/24/2023]
Abstract
We report the fabrication and characterization of microwell-based individually addressable microelectrode arrays (MEAs) and their application to spatially and temporally resolved detection of neurotransmitter release across a single pheochromocytoma (PC12) cell. The microwell-based MEAs consist of 16 4-μm-width square ultramicroelectrodes, 25 3-μm-width square ultramicroelectrodes, or 36 2-μm-width square ultramicroelectrodes, all inside a 40 × 40 μm square SU-8 microwell. MEAs were fabricated on glass substrates by photolithography, thin film deposition, and reactive ion etching. The ultramicroelectrodes in each MEA are tightly defined in a 30 × 30 μm square area, which is further encased inside the SU-8 microwell. With this method, we demonstrate that these microelectrodes are stable, reproducible, and demonstrate good electrochemical properties using cyclic voltammetry. Effective targeting and culture of a single cell is achieved by combining cell-sized microwell trapping and cell-picking micropipet techniques. The surface of the microelectrodes in the MEA was coated with collagen IV to promote cell adhesion and further single-cell culture, as good adhesion between the cell membrane and the electrode surface is critical for the quality of the measurements. Imaging the spatial distribution of exocytosis at the surface of a single PC12 cell has also been demonstrated with this system. Exocytotic signals have been successfully recorded from eight independent 2-μm-wide ultramicroelectrodes from a single PC12 cell showing that the subcellular heterogeneity in single-cell exocytosis can be precisely analyzed with these microwell-based MEAs.
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Affiliation(s)
- Jun Wang
- Department
of Chemistry and Molecular Biology, University
of Gothenburg, Kemivägen
10, 41296 Gothenburg, Sweden
- Department
of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Raphaël Trouillon
- Department
of Chemistry and Molecular Biology, University
of Gothenburg, Kemivägen
10, 41296 Gothenburg, Sweden
| | - Johan Dunevall
- Department
of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Andrew G. Ewing
- Department
of Chemistry and Molecular Biology, University
of Gothenburg, Kemivägen
10, 41296 Gothenburg, Sweden
- Department
of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, 41296 Gothenburg, Sweden
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49
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Ino K, Kanno Y, Nishijo T, Komaki H, Yamada Y, Yoshida S, Takahashi Y, Shiku H, Matsue T. Densified Electrochemical Sensors Based on Local Redox Cycling between Vertically Separated Electrodes in Substrate Generation/Chip Collection and Extended Feedback Modes. Anal Chem 2014; 86:4016-23. [DOI: 10.1021/ac500435d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Kosuke Ino
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Yusuke Kanno
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Taku Nishijo
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Hirokazu Komaki
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Yuta Yamada
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Shinya Yoshida
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Yasufumi Takahashi
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Hitoshi Shiku
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
| | - Tomokazu Matsue
- Graduate School of Environmental Studies and §WPI Advanced Institute
for Materials Research, Tohoku University, Sendai, Japan 980-8579
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50
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Trouillon R, Ewing AG. Actin controls the vesicular fraction of dopamine released during extended kiss and run exocytosis. ACS Chem Biol 2014; 9:812-20. [PMID: 24400601 PMCID: PMC3985473 DOI: 10.1021/cb400665f] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
![]()
The effect of latrunculin A, an inhibitor
of actin cross-linking,
on exocytosis in PC12 cells was investigated with single cell amperometry.
This analysis strongly suggests that the actin cytoskeleton might
be involved in regulating exocytosis, especially by mediating the
constriction of the pore. In an extended kiss-and-run release mode,
actin could actually control the fraction of neurotransmitters released
by the vesicle. This scaffold appears to contribute, with the lipid
membrane and the protein machinery, to the closing dynamics of the
pore, in competition with other forces mediating the opening of the
exocytotic channel.
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Affiliation(s)
- Raphaël Trouillon
- Department
of Chemistry and Molecular Biology, University of Gothenburg, S-41296 Gothenburg, Sweden
| | - Andrew G. Ewing
- Department
of Chemistry and Molecular Biology, University of Gothenburg, S-41296 Gothenburg, Sweden
- Department
of Chemical and Biological Engineering, Chalmers University of Technology, S-41296 Gothenburg, Sweden
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