1
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Zhang H, Jiang H, Liu X, Wang X. A review of innovative electrochemical strategies for bioactive molecule detection and cell imaging: Current advances and challenges. Anal Chim Acta 2024; 1285:341920. [PMID: 38057043 DOI: 10.1016/j.aca.2023.341920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/13/2023] [Accepted: 10/14/2023] [Indexed: 12/08/2023]
Abstract
Cellular heterogeneity poses a major challenge for tumor theranostics, requiring high-resolution intercellular bioanalysis strategies. Over the past decades, the advantages of electrochemical analysis, such as high sensitivity, good spatio-temporal resolution, and ease of use, have made it the preferred method to uncover cellular differences. To inspire more creative research, herein, we highlight seminal works in electrochemical techniques for biomolecule analysis and bioimaging. Specifically, micro/nano-electrode-based electrochemical techniques enable real-time quantitative analysis of electroactive substances relevant to life processes in the micro-nanostructure of cells and tissues. Nanopore-based technique plays a vital role in biosensing by utilizing nanoscale pores to achieve high-precision detection and analysis of biomolecules with exceptional sensitivity and single-molecule resolution. Electrochemiluminescence (ECL) technology is utilized for real-time monitoring of the behavior and features of individual cancer cells, enabling observation of their dynamic processes due to its capability of providing high-resolution and highly sensitive bioimaging of cells. Particularly, scanning electrochemical microscopy (SECM) and scanning ion conductance microscopy (SICM) which are widely used in real-time observation of cell surface biological processes and three-dimensional imaging of micro-nano structures, such as metabolic activity, ion channel activity, and cell morphology are introduced in this review. Furthermore, the expansion of the scope of cellular electrochemistry research by innovative functionalized electrodes and electrochemical imaging models and strategies to address future challenges and potential applications is also discussed in this review.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Hui Jiang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Xiaohui Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
| | - Xuemei Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
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2
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Xu P, Wang X, Shi J, Chen W, Lu ZJ, Jia H, Ye D, Li X. Functionally Collaborative Nanostructure for Direct Monitoring of Neurotransmitter Exocytosis in Living Cells. NANO LETTERS 2023; 23:2427-2435. [PMID: 36715488 DOI: 10.1021/acs.nanolett.2c04117] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Neurotransmitter exocytosis of living cells plays a vital role in neuroscience. However, the available amperometric technique with carbon fiber electrodes typically measures exocytotic events from one cell during one procedure, which requires professional operations and takes time to produce statistical results of multiple cells. Here, we develop a functionally collaborative nanostructure to directly measure the neurotransmitter dopamine (DA) exocytosis from living rat pheochromocytoma (PC12) cells. The functionally collaborative nanostructure is constructed of metal-organic framework (MOF)-on-nanowires-on-graphene oxide, which is highly sensitive to DA molecules and enables direct detection of neurotransmitter exocytosis. Using the microsensor, the exocytosis from PC12 cells pretreated with the desired drugs (e.g., anticoronavirus drug, antiflu drug, or anti-inflammatory drug) has been successfully measured. Our achievements demonstrate the feasibility of the functionally collaborative nanostructure in the real-time detection of exocytosis and the potential applicability in the highly efficient assessment of the modulation effects of medications on exocytosis.
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Affiliation(s)
- Pengcheng Xu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing100049, China
| | - Xuefeng Wang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing100049, China
| | - Jiaci Shi
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
| | - Wei Chen
- Department of Emergency, Tongji Hospital, Tongji University School of Medicine, Shanghai200065, China
| | - Zhan-Jun Lu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai200080, China
| | - Hao Jia
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing100049, China
| | - Daixin Ye
- Department of Chemistry, Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai200444, China
| | - Xinxin Li
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai200050, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing100049, China
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3
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Sciurti E, Biscaglia F, Prontera C, Giampetruzzi L, Blasi L, Francioso L. Nanoelectrodes for Intracellular and Intercellular electrochemical detection: working principles, fabrication techniques and applications. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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4
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Hatamie A, He X, Zhang XW, Oomen PE, Ewing AG. Advances in nano/microscale electrochemical sensors and biosensors for analysis of single vesicles, a key nanoscale organelle in cellular communication. Biosens Bioelectron 2022; 220:114899. [DOI: 10.1016/j.bios.2022.114899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
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Lork AA, Vo KLL, Phan NTN. Chemical Imaging and Analysis of Single Nerve Cells by Secondary Ion Mass Spectrometry Imaging and Cellular Electrochemistry. Front Synaptic Neurosci 2022; 14:854957. [PMID: 35651734 PMCID: PMC9149580 DOI: 10.3389/fnsyn.2022.854957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
A nerve cell is a unit of neuronal communication in the nervous system and is a heterogeneous molecular structure, which is highly mediated to accommodate cellular functions. Understanding the complex regulatory mechanisms of neural communication at the single cell level requires analytical techniques with high sensitivity, specificity, and spatial resolution. Challenging technologies for chemical imaging and analysis of nerve cells will be described in this review. Secondary ion mass spectrometry (SIMS) allows for non-targeted and targeted molecular imaging of nerve cells and synapses at subcellular resolution. Cellular electrochemistry is well-suited for quantifying the amount of reactive chemicals released from living nerve cells. These techniques will also be discussed regarding multimodal imaging approaches that have recently been shown to be advantageous for the understanding of structural and functional relationships in the nervous system. This review aims to provide an insight into the strengths, limitations, and potentials of these technologies for synaptic and neuronal analyses.
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Hatamie A, Ren L, Dou H, Gandasi NR, Rorsman P, Ewing A. Nanoscale Amperometry Reveals that Only a Fraction of Vesicular Serotonin Content is Released During Exocytosis from Beta Cells. Angew Chem Int Ed Engl 2021; 60:7593-7596. [PMID: 33340209 PMCID: PMC8049002 DOI: 10.1002/anie.202015902] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Indexed: 12/23/2022]
Abstract
Recent work has shown that chemical release during the fundamental cellular process of exocytosis in model cell lines is not all-or-none. We tested this theory for vesicular release from single pancreatic beta cells. The vesicles in these cells release insulin, but also serotonin, which is detectible with amperometric methods. Traditionally, it is assumed that exocytosis in beta cells is all-or-none. Here, we use a multidisciplinary approach involving nanoscale amperometric chemical methods to explore the chemical nature of insulin exocytosis. We amperometrically quantified the number of serotonin molecules stored inside of individual nanoscale vesicles (39 317±1611) in the cell cytoplasm before exocytosis and the number of serotonin molecules released from single cells (13 310±1127) for each stimulated exocytosis event. Thus, beta cells release only one-third of their granule content, clearly supporting partial release in this system. We discuss these observations in the context of type-2 diabetes.
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Affiliation(s)
- Amir Hatamie
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemivägen 1041296GothenburgSweden
| | - Lin Ren
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemivägen 1041296GothenburgSweden
| | - Haiqiang Dou
- Department of Physiology, Sahlgrenska AcademyUniversity of GothenburgMedicinaregatan 11–1341390GothenburgSweden
| | - Nikhil R. Gandasi
- Department of Physiology, Sahlgrenska AcademyUniversity of GothenburgMedicinaregatan 11–1341390GothenburgSweden
| | - Patrik Rorsman
- Department of Physiology, Sahlgrenska AcademyUniversity of GothenburgMedicinaregatan 11–1341390GothenburgSweden
- Oxford Centre for Diabetes, Endocrinology and MetabolismUniversity of OxfordChurchill HospitalOxfordOX3 7LJUK
| | - Andrew Ewing
- Department of Chemistry and Molecular BiologyUniversity of GothenburgKemivägen 1041296GothenburgSweden
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7
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Wang Y, Ewing A. Electrochemical Quantification of Neurotransmitters in Single Live Cell Vesicles Shows Exocytosis is Predominantly Partial. Chembiochem 2021; 22:807-813. [PMID: 33174683 PMCID: PMC7984156 DOI: 10.1002/cbic.202000622] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/02/2020] [Indexed: 12/18/2022]
Abstract
Exocytosis plays an essential role in the communication between cells in the nervous system. Understanding the regulation of neurotransmitter release during exocytosis and the amount of neurotransmitter content that is stored in vesicles is of importance, as it provides fundamental insights to understand how the brain works and how neurons elicit a certain behavior. In this minireview, we summarize recent progress in amperometric measurements for monitoring exocytosis in single cells and electrochemical cytometry measurements of vesicular neurotransmitter content in individual vesicles. Important steps have increased our understanding of the different mechanisms of exocytosis. Increasing evidence is firmly establishing that partial release is the primary mechanism of release in multiple cell types.
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Affiliation(s)
- Ying Wang
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg, Sweden
| | - Andrew Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 412 96 Gothenburg, Sweden
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8
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Hatamie A, Ren L, Dou H, Gandasi NR, Rorsman P, Ewing A. Nanoscale Amperometry Reveals that Only a Fraction of Vesicular Serotonin Content is Released During Exocytosis from Beta Cells. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015902] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Amir Hatamie
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
| | - Lin Ren
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
| | - Haiqiang Dou
- Department of Physiology, Sahlgrenska Academy University of Gothenburg Medicinaregatan 11–13 41390 Gothenburg Sweden
| | - Nikhil R. Gandasi
- Department of Physiology, Sahlgrenska Academy University of Gothenburg Medicinaregatan 11–13 41390 Gothenburg Sweden
| | - Patrik Rorsman
- Department of Physiology, Sahlgrenska Academy University of Gothenburg Medicinaregatan 11–13 41390 Gothenburg Sweden
- Oxford Centre for Diabetes, Endocrinology and Metabolism University of Oxford Churchill Hospital Oxford OX3 7LJ UK
| | - Andrew Ewing
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
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Liu Y, Du J, Wang M, Zhang J, Liu C, Li X. Recent Progress in Quantitatively Monitoring Vesicular Neurotransmitter Release and Storage With Micro/Nanoelectrodes. Front Chem 2021; 8:591311. [PMID: 33505953 PMCID: PMC7831278 DOI: 10.3389/fchem.2020.591311] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/20/2020] [Indexed: 01/31/2023] Open
Abstract
Exocytosis is one of the essential steps for chemical signal transmission between neurons. In this process, vesicles dock and fuse with the plasma membrane and release the stored neurotransmitters through fusion pores into the extracellular space, and all of these steps are governed with various molecules, such as proteins, ions, and even lipids. Quantitatively monitoring vesicular neurotransmitter release in exocytosis and initial neurotransmitter storage in individual vesicles is significant for the study of chemical signal transmission of the central nervous system (CNS) and neurological diseases. Electrochemistry with micro/nanoelectrodes exhibits great spatial-temporal resolution and high sensitivity. It can be used to examine the exocytotic kinetics from the aspect of neurotransmitters and quantify the neurotransmitter storage in individual vesicles. In this review, we first introduce the recent advances of single-cell amperometry (SCA) and the nanoscale interface between two immiscible electrolyte solutions (nanoITIES), which can monitor the quantity and release the kinetics of electrochemically and non-electrochemically active neurotransmitters, respectively. Then, the development and application of the vesicle impact electrochemical cytometry (VIEC) and intracellular vesicle impact electrochemical cytometry (IVIEC) and their combination with other advanced techniques can further explain the mechanism of neurotransmitter storage in vesicles before exocytosis. It has been proved that these electrochemical techniques have great potential in the field of neuroscience.
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Affiliation(s)
| | | | | | | | - Chunlan Liu
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Xianchan Li
- Center for Imaging and Systems Biology, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
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10
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Li Y, Huang S, Li J, Li J, Ji X, Liu J, Chen L, Peng S, Zhang K. Access to 2-pyridinylamide and imidazopyridine from 2-fluoropyridine and amidine hydrochloride. Org Biomol Chem 2020; 18:9292-9299. [PMID: 33164006 DOI: 10.1039/d0ob01904f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under catalyst-free conditions, an efficient method to synthesize 2-pyridinylamides has been developed, and the protocol uses inexpensive and readily available 2-fluoropyridine and amidine derivatives as the starting materials. Simultaneously, the copper-catalysed approach to imidazopyridine derivatives has been established with high chemoselectivity and regiospecificity. The results suggest that the nitrogen-heterocycles containing iodide substituents can also be compatible for the reaction via the cascade Ullmann-type coupling, and the nucleophilic substitution reaction provides the target products in a one-pot manner.
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Affiliation(s)
- Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Shuo Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Jiaming Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Jian Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Xiaoliang Ji
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Jiasheng Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Shiyong Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020 China.
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11
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Chen R, Alanis K, Welle TM, Shen M. Nanoelectrochemistry in the study of single-cell signaling. Anal Bioanal Chem 2020; 412:6121-6132. [PMID: 32424795 DOI: 10.1007/s00216-020-02655-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/02/2020] [Accepted: 04/08/2020] [Indexed: 12/28/2022]
Abstract
Label-free biosensing has been the dream of scientists and biotechnologists as reported by Vollmer and Arnold (Nat Methods 5:591-596, 2008). The ability of examining living cells is crucial to cell biology as noted by Fang (Int J Electrochem 2011:460850, 2011). Chemical measurement with electrodes is label-free and has demonstrated capability of studying living cells. In recent years, nanoelectrodes of different functionality have been developed. These nanometer-sized electrodes, coupled with scanning electrochemical microscopy (SECM), have further enabled nanometer spatial resolution study in aqueous environments. Developments in the field of nanoelectrochemistry have allowed measurement of signaling species at single cells, contributing to better understanding of cell biology. Leading studies using nanoelectrochemistry of a variety of cellular signaling molecules, including redox-active neurotransmitter (e.g., dopamine), non-redox-active neurotransmitter (e.g., acetylcholine), reactive oxygen species (ROS), and reactive nitrogen species (RNS), are reviewed here.
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Affiliation(s)
- Ran Chen
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Kristen Alanis
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Theresa M Welle
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Mei Shen
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA.
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Larsson A, Majdi S, Borges R, Ewing A. Vesicular Transmitter Content in Chromaffin Cells Can Be Regulated via Extracellular ATP. ACS Chem Neurosci 2019; 10:4735-4740. [PMID: 31637911 DOI: 10.1021/acschemneuro.9b00494] [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: 12/16/2022] Open
Abstract
The energy carrying molecule adenosine triphosphate (ATP) has been implicated for its role in modulation of chemical signaling for some time. Despite this, the precise effects and mechanisms of action of ATP on secretory cells are not well-known. Here, bovine chromaffin cells have been used as a model system to study the effects of extracellular ATP in combination with the catecholamine transmitter norepinephrine (NE). Both transmitter storage and exocytotic release were quantified using complementary amperometric techniques. Although incubation with NE alone did not cause any changes to either transmitter storage or release, coincubation with NE and ATP resulted in a significant increase that was concentration dependent. To probe the potential mechanisms of action, a slowly hydrolyzable version of ATP, ATP-γ-S, was used either alone or together with NE. The result implicates two different behaviors of ATP acting on both the purinergic autoreceptors and as a source of the energy needed to load chromaffin cell vesicles.
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Affiliation(s)
- Anna Larsson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Soodabeh Majdi
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
| | - Ricardo Borges
- Unidad de Farmacología, Facultad de Medicina, Universidad de La Laguna, 38200 Laguna, Tenerife, Spain
| | - Andrew Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296 Gothenburg, Sweden
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Ranjbari E, Majdi S, Ewing A. Analytical Techniques: Shedding Light upon Nanometer-Sized Secretory Vesicles. TRENDS IN CHEMISTRY 2019. [DOI: 10.1016/j.trechm.2019.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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14
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Shin M, Wang Y, Borgus JR, Venton BJ. Electrochemistry at the Synapse. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2019; 12:297-321. [PMID: 30707593 PMCID: PMC6989097 DOI: 10.1146/annurev-anchem-061318-115434] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Electrochemical measurements of neurotransmitters provide insight into the dynamics of neurotransmission. In this review, we describe the development of electrochemical measurements of neurotransmitters and how they started with extrasynaptic measurements but now are pushing toward synaptic measurements. Traditionally, biosensors or fast-scan cyclic voltammetry have monitored extrasynaptic levels of neurotransmitters, such as dopamine, serotonin, adenosine, glutamate, and acetylcholine. Amperometry and electrochemical cytometry techniques have revealed mechanisms of exocytosis, suggesting partial release. Advances in nanoelectrodes now allow spatially resolved, electrochemical measurements in a synapse, which is only 20-100 nm wide. Synaptic measurements of dopamine and acetylcholine have been made. In this article, electrochemical measurements are also compared to optical imaging and mass spectrometry measurements, and while these other techniques provide enhanced spatial or chemical information, electrochemistry is best at monitoring real-time neurotransmission. Future challenges include combining electrochemistry with these other techniques in order to facilitate multisite and multianalyte monitoring.
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Affiliation(s)
| | | | - Jason R Borgus
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA;
| | - B Jill Venton
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA;
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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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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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17
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Affiliation(s)
- Pieter E. Oomen
- University of Gothenburg, Department of Chemistry and Molecular Biology, Gothenburg 41296, Sweden
| | - Mohaddeseh A. Aref
- University of Gothenburg, Department of Chemistry and Molecular Biology, Gothenburg 41296, Sweden
| | - Ibrahim Kaya
- University of Gothenburg, Department of Chemistry and Molecular Biology, Gothenburg 41296, Sweden
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V3, 43180 Mölndal, Sweden
- The Gothenburg Imaging Mass Spectrometry (Go:IMS) Laboratory, University of Gothenburg and Chalmers University of Technology, Gothenburg 41296, Sweden
| | - Nhu T. N. Phan
- University of Gothenburg, Department of Chemistry and Molecular Biology, Gothenburg 41296, Sweden
- The Gothenburg Imaging Mass Spectrometry (Go:IMS) Laboratory, University of Gothenburg and Chalmers University of Technology, Gothenburg 41296, Sweden
- University of Göttingen Medical Center, Institute of Neuro- and Sensory Physiology, Göttingen 37073, Germany
| | - Andrew G. Ewing
- University of Gothenburg, Department of Chemistry and Molecular Biology, Gothenburg 41296, Sweden
- The Gothenburg Imaging Mass Spectrometry (Go:IMS) Laboratory, University of Gothenburg and Chalmers University of Technology, Gothenburg 41296, Sweden
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