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Wu W, Wen Y, Chen Y, Ji L, Chao H. A Mitochondria-Localized Iridium(III) Complex for Simultaneous Two-Photon Phosphorescence Lifetime Imaging of Downstream Products N 2O 3 and ONOO - of Endogenous Nitric Oxide. Anal Chem 2023; 95:15956-15964. [PMID: 37856322 DOI: 10.1021/acs.analchem.3c03023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Nitric oxide (NO) serves as a ubiquitous and fundamental signaling molecule involved in intricate effects on both physiological and pathological processes. NO, biosynthesized by nitric oxide synthase (NOS) or generated from nitrite, can form nitrosation reagent N2O3 (4NO + O2 = 2N2O3) through its oxidation or quickly produce peroxynitrite anion ONOO- (NO + •O2- = ONOO-) by reacting with superoxide anion (•O2-). However, most of the existing luminescent probes for NO just focus on specificity and utilize only a single signal to distinguish products N2O3 or ONOO-. In most of the present work, they differentiate one product from another simply by fluorescence signal or fluorescence intensity, which is not enough to distinguish accurately the behavior of NO in living cells. Herein, a new mitochondria-targeted and two-photon near-infrared (NIR) phosphorescent iridium(III) complex, known as Ir-NBD, has been designed for accurate detection and simultaneous imaging of two downstream products of endogenous NO, i.e., N2O3 and ONOO-. Ir-NBD exhibits a rapid response to N2O3 and ONOO- in enhanced phosphorescence intensity, increased phosphorescence lifetime, and an exceptionally high two-photon cross-section, reaching values of 78 and 85 GM, respectively, after the reaction. Furthermore, we employed multiple imaging methods, phosphorescence intensity imaging, and phosphorescence lifetime imaging together to image even distinguish N2O3 and ONOO- by probe Ir-NBD. Thus, coupled with its excellent photometrics, Ir-NBD enabled the detection of the basal level of intracellular NO accurately by responding to N2O3 and ONOO- in the lipopolysaccharide-stimulated macrophage model in virtue of fluorescence signal and phosphorescence lifetime imaging, revealing precisely the endogenous mitochondrial NO distribution during inflammation in a cell environment.
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Affiliation(s)
- Weijun Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Yuxin Wen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Yu Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Liangnian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
- MOE Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 400201, P. R. China
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2
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Meng X, Pang X, Zhang K, Gong C, Yang J, Dong H, Zhang X. Recent Advances in Near-Infrared-II Fluorescence Imaging for Deep-Tissue Molecular Analysis and Cancer Diagnosis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202035. [PMID: 35762403 DOI: 10.1002/smll.202202035] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Fluorescence imaging with high sensitivity and minimal invasiveness has received tremendous attention, which can accomplish visualized monitoring and evaluation of cancer progression. Compared with the conventional first near-infrared (NIR-I) optical window (650-950 nm), fluorescence imaging in the second NIR optical window (NIR-II, 950-1700 nm) exhibits deeper tissue penetration capability and higher temporal-spatial resolution with lower background interference for achieving deep-tissue in vivo imaging and real-time monitoring of cancer development. Encouraged by the significant preponderances, a variety of multifunctional NIR-II fluorophores have been designed and fabricated for sensitively imaging biomarkers in vivo and visualizing the treatment procedure of cancers. In this review, the differences between NIR-I and NIR-II fluorescence imaging are briefly introduced, especially the advantages of NIR-II fluorescence imaging for the real-time visualization of tumors in vivo and cancer diagnosis. An important focus is to summarize the NIR-II fluorescence imaging for deep-tissue biomarker analysis in vivo and tumor tissue visualization, and a brief introduction of NIR-II fluorescence imaging-guided cancer therapy is also presented. Finally, the significant challenges and reasonable prospects of NIR-II fluorescence imaging for cancer diagnosis in clinical applications are outlined.
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Affiliation(s)
- Xiangdan Meng
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Research Centre for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 10083, P. R. China
| | - Xuejiao Pang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Research Centre for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 10083, P. R. China
| | - Kai Zhang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Chenchen Gong
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Junyan Yang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Haifeng Dong
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Research Centre for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 10083, P. R. China
- Marshall Laboratory of Biomedical Engineering, School of Biomedical Engineering, Health Science Centre, Shenzhen University, Shenzhen, 518071, P. R. China
| | - Xueji Zhang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Research Centre for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 10083, P. R. China
- Marshall Laboratory of Biomedical Engineering, School of Biomedical Engineering, Health Science Centre, Shenzhen University, Shenzhen, 518071, P. R. China
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3
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Tan C, Robbins EM, Wu B, Cui XT. Recent Advances in In Vivo Neurochemical Monitoring. MICROMACHINES 2021; 12:208. [PMID: 33670703 PMCID: PMC7922317 DOI: 10.3390/mi12020208] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/11/2021] [Accepted: 02/14/2021] [Indexed: 12/20/2022]
Abstract
The brain is a complex network that accounts for only 5% of human mass but consumes 20% of our energy. Uncovering the mysteries of the brain's functions in motion, memory, learning, behavior, and mental health remains a hot but challenging topic. Neurochemicals in the brain, such as neurotransmitters, neuromodulators, gliotransmitters, hormones, and metabolism substrates and products, play vital roles in mediating and modulating normal brain function, and their abnormal release or imbalanced concentrations can cause various diseases, such as epilepsy, Alzheimer's disease, and Parkinson's disease. A wide range of techniques have been used to probe the concentrations of neurochemicals under normal, stimulated, diseased, and drug-induced conditions in order to understand the neurochemistry of drug mechanisms and develop diagnostic tools or therapies. Recent advancements in detection methods, device fabrication, and new materials have resulted in the development of neurochemical sensors with improved performance. However, direct in vivo measurements require a robust sensor that is highly sensitive and selective with minimal fouling and reduced inflammatory foreign body responses. Here, we review recent advances in neurochemical sensor development for in vivo studies, with a focus on electrochemical and optical probes. Other alternative methods are also compared. We discuss in detail the in vivo challenges for these methods and provide an outlook for future directions.
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Affiliation(s)
- Chao Tan
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA; (C.T.); (E.M.R.); (B.W.)
| | - Elaine M. Robbins
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA; (C.T.); (E.M.R.); (B.W.)
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Bingchen Wu
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA; (C.T.); (E.M.R.); (B.W.)
- Center for Neural Basis of Cognition, Pittsburgh, PA 15213, USA
| | - Xinyan Tracy Cui
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA; (C.T.); (E.M.R.); (B.W.)
- Center for Neural Basis of Cognition, Pittsburgh, PA 15213, USA
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA
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4
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Abstract
Initially being considered as an environmental pollutant, nitric oxide has gained the momentum of research since its discovery as endothelial derived growth factor in 1987. Extensive researches have revealed the various pathological and physiological roles of nitric oxide such as inflammation, vascular and neurological regulation functions. Hence, the development of methods for quantifying nitric oxide concentration and its metabolites will be beneficial to well know about its biological functions and effects. This review summaries various methods for in vitro and in vivo nitric oxide detection, and introduces their merits and demerits.
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Affiliation(s)
- Ekta Goshi
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China
| | - Gaoxin Zhou
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China
| | - Qianjun He
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China; Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, China
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5
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Vaneev AN, Gorelkin PV, Garanina AS, Lopatukhina HV, Vodopyanov SS, Alova AV, Ryabaya OO, Akasov RA, Zhang Y, Novak P, Salikhov SV, Abakumov MA, Takahashi Y, Edwards CRW, Klyachko NL, Majouga AG, Korchev YE, Erofeev AS. In Vitro and In Vivo Electrochemical Measurement of Reactive Oxygen Species After Treatment with Anticancer Drugs. Anal Chem 2020; 92:8010-8014. [PMID: 32441506 DOI: 10.1021/acs.analchem.0c01256] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In vivo monitoring of reactive oxygen species (ROS) in tumors during treatment with anticancer therapy is important for understanding the mechanism of action and in the design of new anticancer drugs. In this work, a platinized nanoelectrode is placed into a single cell for detection of the ROS signal, and drug-induced ROS production is then recorded. The main advantages of this method are the short incubation time with the drug and its high sensitivity which allows the detection of low intracellular ROS concentrations. We have shown that our new method can measure the ROS response to chemotherapy in tumor-bearing mice in real-time. ROS levels were measured in vivo inside the tumor at different depths in response to doxorubicin. This work provides an effective new approach for the measurement of intracellular ROS by platinized nanoelectrodes.
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Affiliation(s)
- Alexander N Vaneev
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
| | - Petr V Gorelkin
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia
| | - Anastasiia S Garanina
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia
| | - Helena V Lopatukhina
- Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
| | - Stepan S Vodopyanov
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
| | - Anna V Alova
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
| | - Oxana O Ryabaya
- N. N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoe shosse, Moscow 115478, Russia
| | - Roman A Akasov
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,I. M. Sechenov First Moscow State Medical University, Trubetskaya Str. 8-2, Moscow 119991, Russia
| | - Yanjun Zhang
- Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300052, China.,Imperial College London, Department of Medicine, London W12 0NN, United Kingdom
| | - Pavel Novak
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Imperial College London, Department of Medicine, London W12 0NN, United Kingdom
| | - Sergey V Salikhov
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia
| | - Maxim A Abakumov
- N. I. Pirogov Russian National Research Medical University, Ostrovityanova Street 1/7, Moscow 117997, Russia
| | - Yasufumi Takahashi
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | | | - Natalia L Klyachko
- Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
| | - Alexander G Majouga
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia.,D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow 125047, Russia
| | - Yuri E Korchev
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Imperial College London, Department of Medicine, London W12 0NN, United Kingdom
| | - Alexander S Erofeev
- National University of Science and Technology "MISiS", Leninskiy Avenue, 4, Moscow 119049, Russia.,Lomonosov Moscow State University, Chemistry Department, Leninskie Gory, 1, 3, Moscow 119991, Russia
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6
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Wu W, Guan R, Liao X, Yan X, Rees TW, Ji L, Chao H. Bimodal Visualization of Endogenous Nitric Oxide in Lysosomes with a Two-Photon Iridium(III) Phosphorescent Probe. Anal Chem 2019; 91:10266-10272. [PMID: 31291720 DOI: 10.1021/acs.analchem.9b02415] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nitric oxide (NO) is a fundamental signaling molecule that shows complex effects on the catabolic autophagy process, which is closely linked with lysosomal function. In this study, a new lysosome-targeted, pH-independent, and two-photon phosphorescent iridium(III) complex, Ir-BPDA, has been investigated for endogenous NO detection and imaging. The rational design of the probe, as the addition of the morpholine moieties and the substitution of a benzyl group in the amino group in Ir-BPDA, facilitates its accumulation in lysosomes and makes the reaction product with NO, Ir-BPDA-NO, insusceptible in its phosphorescence intensity and lifetime against pH changes (pH 4-10), well suited for lysosomal NO detection (pH 4-6). Furthermore, Ir-BPDA exhibits a fast and 50-fold response to NO in phosphorescence intensity and a two-photon cross-section as high as 60 GM after the reaction, as well as a notably increased phosphorescence lifetime from 200.1 to 619.6 ns. Thus, accompanied by its photostability, Ir-BPDA enabled the detection of NO in the lipopolysaccharide-stimulated macrophages and zebrafish model, revealing the endogenous lysosomal NO distribution during inflammation in vivo by means of both TPM and PLIM imaging techniques.
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Affiliation(s)
- Weijun Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Ruilin Guan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Xinxing Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Xu Yan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Thomas W Rees
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Liangnian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China.,MOE Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, School of Chemistry and Chemical Engineering , Hunan University of Science and Technology , Xiangtan , 400201 , P. R. China
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7
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Nanomaterials-Based Electrochemical Sensors for In Vitro and In Vivo Analyses of Neurotransmitters. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8091504] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Neurotransmitters are molecules that transfer chemical signals between neurons to convey messages for any action conducted by the nervous system. All neurotransmitters are medically important; the detection and analysis of these molecules play vital roles in the diagnosis and treatment of diseases. Among analytical strategies, electrochemical techniques have been identified as simple, inexpensive, and less time-consuming processes. Electrochemical analysis is based on the redox behaviors of neurotransmitters, as well as their metabolites. A variety of electrochemical techniques are available for the detection of biomolecules. However, the development of a sensing platform with high sensitivity and selectivity is challenging, and it has been found to be a bottleneck step in the analysis of neurotransmitters. Nanomaterials-based sensor platforms are fascinating for researchers because of their ability to perform the electrochemical analysis of neurotransmitters due to their improved detection efficacy, and they have been widely reported on for their sensitive detection of epinephrine, dopamine, serotonin, glutamate, acetylcholine, nitric oxide, and purines. The advancement of electroanalytical technologies and the innovation of functional nanomaterials have been assisting greatly in in vivo and in vitro analyses of neurotransmitters, especially for point-of-care clinical applications. In this review, firstly, we focus on the most commonly employed electrochemical analysis techniques, in conjunction with their working principles and abilities for the detection of neurotransmitters. Subsequently, we concentrate on the fabrication and development of nanomaterials-based electrochemical sensors and their advantages over other detection techniques. Finally, we address the challenges and the future outlook in the development of electrochemical sensors for the efficient detection of neurotransmitters.
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8
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Munshi AS, Chen C, Townsend AD, Martin RS. Use of 3D Printing and Modular Microfluidics to Integrate Cell Culture, Injections and Electrochemical Analysis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2018; 10:3364-3374. [PMID: 30923580 PMCID: PMC6433419 DOI: 10.1039/c8ay00829a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Fabrication of microchip-based devices using 3-D printing technology offers a unique platform to create separate modules that can be put together when desired for analysis. A 3-D printed module approach offers various advantages such as file sharing and the ability to easily replace, customize, and modify the individual modules. Here, we describe the use of a modular approach to electrochemically detect the ATP-mediated release of nitric oxide (NO) from endothelial cells. Nitric oxide plays a significant role in the vasodilation process; however, detection of NO is challenging due to its short half-life. To enable this analysis, we use three distinct 3-D printed modules: cell culture, sample injection and detection modules. The detection module follows a pillar-based Wall-Jet Electrode design, where the analyte impinges normal to the electrode surface, offering enhanced sensitivity for the analyte. To further enhance the sensitivity and selectivity for NO detection the working electrode (100 μm gold) is modified by the addition of a 27 μm gold pillar and platinum-black coated with Nafion. The use of the pillar electrode leads to three-dimensional structure protruding into the channel enhancing the sensitivity by 12.4 times in comparison to the flat electrode (resulting LOD for NO = 210 nM). The next module, the 3-D printed sample injection module, follows a simple 4-Port injection rotor design made of two separate components that when assembled can introduce a specific volume of analyte. This module not only serves as a cheaper alternative to the commercially available 4-Port injection valves, but also demonstrates the ability of volume customization and reduced dead-volume issues with the use of capillary-free connections. Comparison between the 3-D printed and a commercial 4-Port injection valve showed similar sensitivities and reproducibility for NO analysis. Lastly, the cell culture module contains electrospun polystyrene fibers with immobilized endothelial cells, resulting in 3-D scaffold for cell culture. With the incorporation of all 3 modules, we can make reproducible ATP injections (via the 3-D printed sample injection module) that can stimulate NO release from endothelial cells cultured on a fibrous insert in the cell culture module which can then be quantitated by the pillar WJE module (0.19 ± 0.03 nM/cell, n = 27, 3 inserts analyzed each day, on 9 different days). The modular approach demonstrates the facile creation of custom and modifiable fluidic components that can be assembled as needed.
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Affiliation(s)
| | | | | | - R. Scott Martin
- corresponding author: Dr. R. Scott Martin, 3501 Laclede Ave, St. Louis, MO, USA 63103, +1 314-977-2836,
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9
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Liu Z, Forsyth H, Khaper N, Chen A. Sensitive electrochemical detection of nitric oxide based on AuPt and reduced graphene oxide nanocomposites. Analyst 2018; 141:4074-83. [PMID: 27143513 DOI: 10.1039/c6an00429f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since nitric oxide (NO) plays a critical role in many biological processes, its precise detection is essential toward an understanding of its specific functions. Here we report on a facile and environmentally compatible strategy for the construction of an electrochemical sensor based on reduced graphene oxide (rGO) and AuPt bimetallic nanoparticles. The prepared nanocomposites were further employed for the electroanalysis of NO using differential pulse voltammetry (DPV) and amperometric methods. The dependence of AuPt molar ratios on the electrochemical performance was investigated. Through the combination of the advantages of the high conductivity from rGO and highly electrocatalytic activity from AuPt bimetallic nanoparticles, the AuPt-rGO based NO sensor exhibited a high sensitivity of 7.35 μA μM(-1) and a low detection limit of 2.88 nM. Additionally, negligible interference from common ions or organic molecules was observed, and the AuPt-rGO modified electrode demonstrated excellent stability. Moreover, this optimized electrochemical sensor was practicable for efficiently monitoring the NO released from rat cardiac cells, which were stimulated by l-arginine (l-arg), showing that stressed cells generated over 10 times more NO than normal cells. The novel sensor developed in this study may have significant medical diagnostic applications for the prevention and monitoring of disease.
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Affiliation(s)
- Zhonggang Liu
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada.
| | - Heidi Forsyth
- Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Neelam Khaper
- Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Aicheng Chen
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada.
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10
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Tang L, Li Y, Xie H, Shu Q, Yang F, Liu YL, Liang F, Wang H, Huang W, Zhang GJ. A sensitive acupuncture needle microsensor for real-time monitoring of nitric oxide in acupoints of rats. Sci Rep 2017; 7:6446. [PMID: 28744003 PMCID: PMC5527006 DOI: 10.1038/s41598-017-06657-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/16/2017] [Indexed: 12/05/2022] Open
Abstract
This study reports an acupuncture needle modified with an iron-porphyrin functionalized graphene composite (FGPC) for real-time monitoring of nitric oxide (NO) release in acupoints of rats. A gold film was first deposited to the needle surface to enhance the conductivity. The FGPC was prepared via hydrothermal synthesis, and subsequently applied to the tip surface of acupuncture needle by electrochemical deposition method. The functionalized needle enabled a specific and sensitive detection of NO based on the favorably catalytic properties of iron-porphyrin and the excellent conductivity of graphene. Amperometric data showed that the needle achieved not only a low detection limit down to 3.2 nM in PBS solution, but also a satisfactory selectivity. Interestingly, the functionalized needle could be inserted into the acupoints of rats for real-time monitoring of NO in vivo. It was found that a remarkable response to NO was respectively obtained in different acupoints when stimulated by L-arginine (L-Arg), revealing that the release of NO was detectable in acupoints. We expect this work would showcase the applications of acupuncture needle in detecting some important signaling molecules in vivo, and exploring the mechanism of acupuncture treatment.
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Affiliation(s)
- Lina Tang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China.,Hubei Provincial Collaborative Innovation Center of Preventive Treatment, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Yutao Li
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China.,Hubei Provincial Collaborative Innovation Center of Preventive Treatment, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Hui Xie
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Qing Shu
- Department of Acupuncture and Moxibustion, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Fan Yang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Yan-Ling Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 4. Bayi Road, Wuhan, 430072, China
| | - Fengxia Liang
- Department of Acupuncture and Moxibustion, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China.,Hubei Provincial Collaborative Innovation Center of Preventive Treatment, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Hua Wang
- Department of Acupuncture and Moxibustion, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China.,Hubei Provincial Collaborative Innovation Center of Preventive Treatment, 1 Huangjia Lake West Road, Wuhan, 430065, China
| | - Weihua Huang
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 4. Bayi Road, Wuhan, 430072, China
| | - Guo-Jun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan, 430065, China. .,Hubei Provincial Collaborative Innovation Center of Preventive Treatment, 1 Huangjia Lake West Road, Wuhan, 430065, China.
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11
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Liu L, Zhang L, Dai Z, Tian Y. A simple functional carbon nanotube fiber for in vivo monitoring of NO in a rat brain following cerebral ischemia. Analyst 2017; 142:1452-1458. [DOI: 10.1039/c7an00138j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple ratiometric electrochemical biosensor for NO monitoring in rat brain following cerebral ischemia was developed based on a carbon nanotube fiber modified with hemin.
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Affiliation(s)
- Li Liu
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Limin Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
| | - Zhihui Dai
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
- P. R. China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
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12
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Liu X, Dumitrescu E, Andreescu S. Electrochemical Biosensors for Real-Time Monitoring of Reactive Oxygen and Nitrogen Species. ACS SYMPOSIUM SERIES 2015. [DOI: 10.1021/bk-2015-1200.ch013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiaobo Liu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
| | - Eduard Dumitrescu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
| | - Silvana Andreescu
- Department of Chemistry & Biomolecular Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699-5810
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13
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Fabrication of a porphyrin-based electrochemical biosensor for detection of nitric oxide released by cancer cells. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2583-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Fabregat V, Izquierdo MÁ, Burguete MI, Galindo F, Luis SV. Nitric oxide sensitive fluorescent polymeric hydrogels showing negligible interference by dehydroascorbic acid. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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15
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Farina D, Alvau MD, Puggioni G, Calia G, Bazzu G, Migheli R, Sechi O, Rocchitta G, Desole MS, Serra PA. Implantable (Bio)sensors as new tools for wireless monitoring of brain neurochemistry in real time. World J Pharmacol 2014; 3:1-17. [DOI: 10.5497/wjp.v3.i1.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 05/01/2014] [Accepted: 05/29/2014] [Indexed: 02/06/2023] Open
Abstract
Implantable electrochemical microsensors are characterized by high sensitivity, while amperometric biosensors are very selective in virtue of the biological detecting element. Each sensor, specific for every neurochemical species, is a miniaturized high-technology device resulting from the combination of several factors: electrode material, shielding polymers, applied electrochemical technique, and in the case of biosensors, biological sensing material, stabilizers, and entrapping chemical nets. In this paper, we summarize the available technology for the in vivo electrochemical monitoring of neurotransmitters (dopamine, norepinephrine, serotonin, acetylcholine, and glutamate), bioenergetic substrates (glucose, lactate, and oxygen), neuromodulators (ascorbic acid and nitric oxide), and exogenous molecules such as ethanol. We also describe the most represented biotelemetric technologies in order to wirelessly transmit the signals of the above-listed neurochemicals. Implantable (Bio)sensors, integrated into miniaturized telemetry systems, represent a new generation of analytical tools that could be used for studying the brain’s physiology and pathophysiology and the effects of different drugs (or toxic chemicals such as ethanol) on neurochemical systems.
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Xu T, Scafa N, Xu LP, Su L, Li C, Zhou S, Liu Y, Zhang X. Electrochemical Sensors for Nitric Oxide Detection in Biological Applications. ELECTROANAL 2014. [DOI: 10.1002/elan.201300564] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Application of a nitric oxide sensor in biomedicine. BIOSENSORS-BASEL 2014; 4:1-17. [PMID: 25587407 PMCID: PMC4264366 DOI: 10.3390/bios4010001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 01/21/2014] [Accepted: 01/23/2014] [Indexed: 12/11/2022]
Abstract
In the present study, we describe the biochemical properties and effects of nitric oxide (NO) in intact and dysfunctional arterial and venous endothelium. Application of the NO electrochemical sensor in vivo and in vitro in erythrocytes of healthy subjects and patients with vascular disease are reviewed. The electrochemical NO sensor device applied to human umbilical venous endothelial cells (HUVECs) and the description of others NO types of sensors are also mentioned.
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18
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Eckert MA, Vu PQ, Zhang K, Kang D, Ali MM, Xu C, Zhao W. Novel molecular and nanosensors for in vivo sensing. Am J Cancer Res 2013; 3:583-94. [PMID: 23946824 PMCID: PMC3741607 DOI: 10.7150/thno.6584] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/14/2013] [Indexed: 11/05/2022] Open
Abstract
In vivo sensors are an emerging field with the potential to revolutionize our understanding of basic biology and our treatment of disease. In this review, we highlight recent advances in the fields of in vivo electrochemical, optical, and magnetic resonance biosensors with a focus on recent developments that have been validated in rodent models or human subjects. In addition, we discuss major challenges in the development and translation of in vivo biosensors and present potential solutions to these problems. The field of nanotechnology, in particular, has recently been instrumental in driving the field of in vivo sensors forward. We conclude with a discussion of emerging paradigms and techniques for the development of future biosensors.
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Hunter RA, Privett BJ, Henley WH, Breed ER, Liang Z, Mittal R, Yoseph BP, McDunn JE, Burd EM, Coopersmith CM, Ramsey JM, Schoenfisch MH. Microfluidic amperometric sensor for analysis of nitric oxide in whole blood. Anal Chem 2013; 85:6066-72. [PMID: 23692300 PMCID: PMC3712765 DOI: 10.1021/ac400932s] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Standard photolithographic techniques and a nitric oxide (NO) selective xerogel polymer were utilized to fabricate an amperometric NO microfluidic sensor with low background noise and the ability to analyze NO levels in small sample volumes (~250 μL). The sensor exhibited excellent analytical performance in phosphate buffered saline, including a NO sensitivity of 1.4 pA nM(-1), a limit of detection (LOD) of 840 pM, and selectivity over nitrite, ascorbic acid, acetaminophen, uric acid, hydrogen sulfide, ammonium, ammonia, and both protonated and deprotonated peroxynitrite (selectivity coefficients of -5.3, -4.2, -4.0, -5.0, -6.0, -5.8, -3.8, -1.5, and -4.0, respectively). To demonstrate the utility of the microfluidic NO sensor for biomedical analysis, the device was used to monitor changes in blood NO levels during the onset of sepsis in a murine pneumonia model.
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Affiliation(s)
- Rebecca A Hunter
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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20
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Bedioui F, Griveau S. Electrochemical Detection of Nitric Oxide: Assessement of Twenty Years of Strategies. ELECTROANAL 2012. [DOI: 10.1002/elan.201200306] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Nyokong T. Electrocatalytic and photosensitizing behavior of metallophthalocyanine complexes. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424608000388] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Electrocatalytic or photosensitizing (photocatalytic) properties of metallophthalocyanine (MPc) complexes are dependent on the central metal. Electrocatalytic behavior is observed for electroactive central metals such as Co , Mn and Fe , whereas photosensitizing behavior is observed for diamagnetic metals such as Al , Zn and Si . In the presence of nanoparticles such as quantum dots, the photosensitizing behavior of MPc complexes is improved. Carbon nanotubes enhance the electrocatalytic behavior of MPc complexes.
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Affiliation(s)
- Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown, 6140, South Africa
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22
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Chng ELK, Pumera M. Nanographite Impurities in Carbon Nanotubes: Their Influence on the Oxidation of Insulin, Nitric Oxide, and Extracellular Thiols. Chemistry 2011; 18:1401-7. [DOI: 10.1002/chem.201102080] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 09/01/2011] [Indexed: 11/08/2022]
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23
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Privett BJ, Shin JH, Schoenfisch MH. Electrochemical nitric oxide sensors for physiological measurements. Chem Soc Rev 2010; 39:1925-35. [PMID: 20502795 DOI: 10.1039/b701906h] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The important biological roles of nitric oxide (NO) have prompted the development of analytical techniques capable of sensitive and selective detection of NO. Electrochemical sensing, more than any other NO detection method, embodies the parameters necessary for quantifying NO in challenging physiological environments such as blood and the brain. In this tutorial review, we provide a broad overview of the field of electrochemical NO sensors, including design, fabrication, and analytical performance characteristics. Both electrochemical sensors and biological applications are detailed.
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Affiliation(s)
- Benjamin J Privett
- Department of Chemistry, University of North Carolina at Chapel Hill, NC 27599, USA
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Varatharajan S, Sathish Kumar K, Berchmans S, Amutha R, Kiruthiga PV, Devi KP. Synergistic effect of hydroxypropyl-β-cyclodextrin encapsulated soluble ferrocene and the gold nanocomposite modified glassy carbon electrode for the estimation of NO in biological systems. Analyst 2010; 135:2348-54. [DOI: 10.1039/c0an00091d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Bedioui F, Quinton D, Griveau S, Nyokong T. Designing molecular materials and strategies for the electrochemical detection of nitric oxide, superoxide and peroxynitrite in biological systems. Phys Chem Chem Phys 2010; 12:9976-88. [DOI: 10.1039/c0cp00271b] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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26
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Heller A. The need for monitoring the actual nitric oxide concentration in tumors. ACTA ACUST UNITED AC 2009; 1:3-6. [PMID: 20234843 PMCID: PMC2837249 DOI: 10.1007/s12566-009-0003-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2009] [Accepted: 04/02/2009] [Indexed: 11/28/2022]
Abstract
The significance of the role of nitric oxide (NO) in cancer is evident from 1,100 publications on the subject; its triggering of apoptosis at high concentrations is documented in 300 publications. While aspects of the rate of generation of NO in tumors have been extensively studied, the rate of its removal from tumors has not been considered, even though it is the difference between the two rates that determines the all important steady-state NO concentration, and thus the likelihood of apoptosis-triggering. The rate of transport of NO scales with its concentration gradient at the interface between a neoplasm and the phase to which it diffuses, which can be air, fat, or blood. Diffusional loss of NO to air would explain the initial two-dimensionality of neoplasms of the skin and lung. The greater solubility of NO in lipids than in aqueous phases should cause its extraction by nearby fat, and would account for the positive correlation between obesity and the incidence of some cancers, such as cancers of the breast. And the rapid consumption of NO by red blood cells implies depletion of excess NO in tumors after they are vascularized: angiogenesis should blunt any apoptosis-triggering NO attack of the immune system. Thus, cancer research and the practice of oncology may benefit of in-tumor monitoring of the actual NO concentration. Miniature NO monitoring electrodes, that might serve the purpose, are reviewed.
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Affiliation(s)
- Adam Heller
- Department of Chemical Engineering, University of Texas, Austin, TX 78712 USA
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Griveau S, Seguin J, Scherman D, Chabot G, Bedioui F. In Vivo Electrochemical Detection of Nitroglycerin-Derived Nitric Oxide in Tumor-Bearing Mice. ELECTROANAL 2009. [DOI: 10.1002/elan.200804300] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Li G, Abdel-Rahman AA. Estrogen-dependent enhancement of NO production in the nucleus tractus solitarius contributes to ethanol-induced hypotension in conscious female rats. Alcohol Clin Exp Res 2008; 33:366-74. [PMID: 19076118 DOI: 10.1111/j.1530-0277.2008.00845.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Our previous pharmacological and cellular studies showed that peripheral (cardiac and vascular) nitric oxide synthase (NOS)-derived NO is implicated in the estrogen (E(2))-dependent hypotensive action of ethanol in female rats. The objective of this study was to test the hypothesis that enhanced NO production in the nucleus tractus solitarius (NTS) is implicated in the E(2)-dependent hypotensive action of ethanol. METHODS To achieve this goal, we utilized in vivo electrochemistry to measure real time changes in neuronal NO to investigate the acute effects of intragastric ethanol (0, 0.5, or 1 g/kg) on NO in NTS neurons, blood pressure (BP), and heart rate (HR) in conscious female rats in the absence (ovariectomized, OVX, rats) or presence of E(2). RESULTS In sham operated (SO) rats, ethanol elicited dose-related increase in NTS NO and reduction in BP. These neurochemical and BP effects of ethanol were absent in OVX rats. Whether the neurochemical effect of ethanol and the associated hypotension are dependent on rapid E(2) signaling was investigated. In OVX rats pretreated, 30 minutes earlier, with E(2) (1 microg/kg), intragastric ethanol (1 g/kg) increased NTS NO and reduced BP and these responses were comparable to those obtained in SO rats. CONCLUSIONS The present findings suggest that increased production of NO in NTS neurons contributes to ethanol-evoked hypotension in female rats. Further, ethanol enhancement of neuronal NO production in the brainstem is dependent on rapid E(2) signaling.
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Affiliation(s)
- Guichu Li
- Department of Pharmacology and Toxicology, Brody School of Medicine at East Carolina University, Greenville, NC 27834, USA
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29
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Nair SP, Gratzl M. Effects of sampling rate on the interpretation of cellular transport measurements. Anal Chem 2008; 80:7684-9. [PMID: 18781816 DOI: 10.1021/ac800842m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemical sensing techniques are increasingly used to study biological processes by monitoring concentration changes of the molecule of interest close to cells. The measured concentration is the result of cellular transport across the cell membrane and diffusion of the released molecules from the cells to the sensing electrode. The objective of such experiments is to understand the cellular processes underlying the observed changes in concentration. Thus, the influence of mass transport on the measured concentration trace has to be removed. This is done by deconvolution of the impulse response function of diffusion from the concentration data. We have recently observed that measuring concentration at a sampling rate that satisfies the Nyquist criterion for the observed concentration dynamics may not be sufficient to correctly reconstruct cellular flux. This is because the impulse response function of diffusion also has to be represented with sufficient temporal resolution. We discuss this problem here using the example of monitoring drug efflux from a monolayer of cancer cells with microvoltammetry, and chloride secretion from an epithelial cell monolayer monitored with an ion-selective electrode.
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Affiliation(s)
- Sumitha P Nair
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
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Besson-Bard A, Griveau S, Bedioui F, Wendehenne D. Real-time electrochemical detection of extracellular nitric oxide in tobacco cells exposed to cryptogein, an elicitor of defence responses. JOURNAL OF EXPERIMENTAL BOTANY 2008; 59:3407-14. [PMID: 18653691 PMCID: PMC2529233 DOI: 10.1093/jxb/ern189] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 06/25/2008] [Indexed: 05/20/2023]
Abstract
It was previously reported that cryptogein, an elicitor of defence responses, induces an intracellular production of nitric oxide (NO) in tobacco. Here, the possibility was explored that cryptogein might also trigger an increase of NO extracellular content through two distinct approaches, an indirect method using the NO probe 4,5-diaminofluorescein (DAF-2) and an electrochemical method involving a chemically modified microelectrode probing free NO in biological media. While the chemical nature of DAF-2-reactive compound(s) is still uncertain, the electrochemical modified microelectrodes provide real-time evidence that cryptogein induces an increase of extracellular NO. Direct measurement of free extracellular NO might offer important new insights into its role in plants challenged by biotic stresses.
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Affiliation(s)
- Angélique Besson-Bard
- UMR INRA 1088/CNRS 5184/Université de Bourgogne, Plante-Microbe-Environnement, BP 86510, 17 rue Sully, 21000 Dijon, France
| | - Sophie Griveau
- CNRS, UMR 8151, Ecole Nationale Supérieure de Chimie de Paris, INSERM, U640, University Paris Descartes. ENSCP, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
| | - Fethi Bedioui
- CNRS, UMR 8151, Ecole Nationale Supérieure de Chimie de Paris, INSERM, U640, University Paris Descartes. ENSCP, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France
| | - David Wendehenne
- UMR INRA 1088/CNRS 5184/Université de Bourgogne, Plante-Microbe-Environnement, BP 86510, 17 rue Sully, 21000 Dijon, France
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Robinson DL, Hermans A, Seipel AT, Wightman RM. Monitoring rapid chemical communication in the brain. Chem Rev 2008; 108:2554-84. [PMID: 18576692 PMCID: PMC3110685 DOI: 10.1021/cr068081q] [Citation(s) in RCA: 454] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Donita L Robinson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA
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Wilson GS, Johnson MA. In-vivo electrochemistry: what can we learn about living systems? Chem Rev 2008; 108:2462-81. [PMID: 18558752 DOI: 10.1021/cr068082i] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George S Wilson
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA.
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Affiliation(s)
- Benjamin J Privett
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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Donáth-Nagy G, Buchwald P, Vancea S, Croitoru M, Tokés B. The quantitative characterization of free radical sources and traps by electromigration applications. ACTA ACUST UNITED AC 2008; 70:1317-23. [PMID: 18255159 DOI: 10.1016/j.jprot.2007.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2007] [Revised: 07/01/2007] [Accepted: 12/26/2007] [Indexed: 10/22/2022]
Abstract
Nowadays, very diverse human activities generate urgent demands for fast, sensitive reliable innovative tools capable of detecting major industrial, military, and other dangerous products. An important part of these compounds are free radicals. Capillary electrophoresis (CE), especially in its miniaturized format (lab-on-a-chip), and other electromigration methods offer special possibilities to resolve this problem. These measurements have a great opportuness because of very wide chemical and biological role of free radicals. Several compounds, e.g. monomers and some biologically important groups (as are nitrones) oppose oxidative challenges by virtue of their trap very rapidly oxygen- or carbon-centered radicals and generating other radical species which are stable and biochemically less harmful than the original ones. In many cases, conventionally, the relative trap capacity is measured against tert.-butylhydroperoxide (TBH). In this lecture are presented numerous important free radical species (active oxygen-, nitrogen- and carbon-centered ones, as HO, NO etc) and their adequate in vitro and in vivo applied bioanalytical methods, including liquid chromatography with electrochemical detection and mass spectrometry, gas chromatography with mass spectrometry, capillary electrophoresis, electron spin resonance and chemiluminescence analysis. A simple and highly sensitive method is the capillary zone electrophoresis with amperometric detection (CZE-AD); It was introduced to determine indirectly OH by analysing its reaction products with salicylic and dihydroxybenzoic acids. Hydroxylated radical products of these acids are often used as a relative measurement in free radical research. Accurate determination of pK(a) values is important for proper characterization of newly synthesized molecules. CZE method was used for determination of their values. Are initiated new research fields as Fenton-, electro-Fenton and photoelectro-Fenton chemistry and foreseen their perspectives. Nitric oxide is an important cell signaling molecule in physiology and pathophysiology. An indirect method for monitoring nitric oxide (NO) by determining nitrate and nitrite by microchip capillary electrophoresis (CE) with electrochemical (EC) detection has been developed. The amount of nitrite formed in this reaction (analyzed by capillary electrophoresis) was compared with the amount of oxygen consumed (measured by polarography). Were observed a linear relationship between the amount of consumed oxygen and the amount of nitrite formed in the measured range. These results demonstrate that polarographic measurements of the amount of oxygen consumed in the reaction with NO could be used to estimate the concentration of dissolved NO in authentic media. Polarography is an adequate method also to quantitative kinetic study of the free radical activity and of the trapping capacity of different compounds. This method is based on measure of the catalytic polarografic current of Fe(III) in the presence of free radical sources (TBH, hydrogen-peroxydes), and their traps. Personal contribution of the authors in this field is discussed.
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Francisco Silva J, Griveau S, Richard C, Zagal JH, Bedioui F. Glassy carbon electrodes modified with single walled carbon nanotubes and cobalt phthalocyanine and nickel tetrasulfonated phthalocyanine: Highly stable new hybrids with enhanced electrocatalytic performances. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.03.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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