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Xie X, Liu D, Wang W, Xiang J, Yang M, Liu G. Microelectrode-Based Electrochemical Impedance Determination of Brain-Derived Neurotrophic Factor in Aqueous Humor for Diagnosis of Glaucoma. Anal Chem 2023; 95:2087-2093. [PMID: 36628978 DOI: 10.1021/acs.analchem.2c05033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The abundance of brain-derived neurotrophic factor (BDNF) in aqueous humor (AH) is an ideal biomarker for the diagnosis of glaucoma, a chronic progressive optic neuropathy and the most frequent cause of irreversible blindness. The difficulty of AH-based BDNF detection is from the small amount of extracted AH in a paracentesis (<100 μL) and the ultra-low abundance of BDNF. In this work, we systematically studied the non-specific adsorption of biofluids on the bare gold electrode by electrochemistry and Raman spectroscopy techniques, revealing the unexpected negative correlation of the extent of non-specific adsorption with the size of the electrode. Based on it, a simple microelectrode-based sensor without the introduction of the blocking layer was developed for the detection of BDNF in the AH sample. Using electrochemical impedance spectroscopy (EIS) and extracting the changes of electron-transfer resistance of the electrochemical probe [Fe(CN)6]3-/4- on the sensor surface, the BDNF was quantified. The dynamic range was from 0.5 to 50 pg·mL-1, with a detection limit of 0.3 pg·mL-1 and a sample consumption of 5 μL. The real AH sample analysis confirmed the significant decrease of BDNF abundance in the AH of glaucoma patients. Our microelectrode-based EIS sensor displayed prominent advantages on simplified preparation, sensitive response, and low sample consumption. This AH-based BDNF analysis is expected to be used for the screening and diagnosis of glaucoma, especially for the high-risk population who have ocular diseases and have to undergo surgeries.
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Affiliation(s)
- Xin Xie
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha410083, P. R. China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha410083, P. R. China
| | - Dan Liu
- Eye Center of Xiangya Hospital, Central South University, Changsha410083, P. R. China
| | - Weili Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen361102, China
| | - Juan Xiang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha410083, P. R. China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Central South University, Changsha410083, P. R. China
| | - Minghui Yang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha410083, P. R. China
| | - Guokun Liu
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen361102, China
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2
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Chen J, Zhu L, Li B, Xiao M, Chen W, Feng X, Zhuo X, Li Y, Wan Y, Deng S. Sorting and Screening of Quaternary Ammonium Lipoids for Membrane-Binding Assays Based on Electrochemiluminescent Cocrystalline Nanosheets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15316-15326. [PMID: 36441978 DOI: 10.1021/acs.langmuir.2c02542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Being synthetic supplements to natural lipids, lipoids now play an increasingly significant role in nanopore sequencing, olfactory sensing, and nanoimpact electrochemistry. Yet, systematic comparisons to sort and screen qualified lipoids are lacking for specific scenario applications. Here, taking the merits of electrochemiluminescence (ECL) in probing biointerfacial events, a new metric was proposed for the evaluation of substrate candidacy in the pool of hyamine bromides (ABs), that are used to cohere with electron-rich porphyrins for deep eutectics-like ECL matrices. Using a state-of-the-art framework emitter, the cocrystalline nanosheet of C70 and zinc meso-tetraphenylporphine (ZnTPP) via simple liquid-liquid interfacial deposition, 6 out of 20 ABs were inspected and identified as not only amenable filmogens but excitonic sensitizers in key terms of ECL strength as well as voltammetric characteristics. Among them, the methyltrioctyl (MTOAB) headgroup stood out; while the ECL activity at ZnTPP-C70@MTOAB was proven to be dictated by ionophoresis across multilamellar lipoidal layers. Thus, target-induced membrane deformation would let coreactant scavengers in to quench ECL, which enabled assays on two less visited bioprocesses regarding (1) the lipid solubility of ipratropium bromide, an aerosol medication for rhinitis treatment; and (2) the resorption of selenosugar as the central metabolite of Se-proteins on kidney glomerular basement barrier. Both resulted in nice membrane-binding measurements with comparable dissociation constants to reported microfluidic ELISA methods. By and large, though still being rudimentary, such parametrization of ECL-able biofilm would set up a basic ECL toolbox for archiving and resourcing multilipoidal even lipid-lipoid combos to handle the realistic (sub)cytomembrane processes in the future.
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Affiliation(s)
- Jialiang Chen
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Longyi Zhu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Bin Li
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ming Xiao
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Wen Chen
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xuyu Feng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Xiyong Zhuo
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Yuansheng Li
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ying Wan
- Department of Instruments Science and Technology, School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Shengyuan Deng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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3
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Recent progress of vibrational spectroscopic study on the interfacial structure of biomimetic membranes. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/j.cjac.2021.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Yang W, Fan L, Guo Z, Wu H, Chen J, Liu C, Yan Y, Ding S. Reversible capturing and voltammetric determination of circulating tumor cells using two-dimensional nanozyme based on PdMo decorated with gold nanoparticles and aptamer. Mikrochim Acta 2021; 188:319. [PMID: 34476628 DOI: 10.1007/s00604-021-04927-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/04/2021] [Indexed: 12/25/2022]
Abstract
A novel cytosensor was constructed for the ultrasensitive detection and nondestructive release of circulating tumor cells (CTCs) by combining Au nanoparticles-loaded two-dimensional bimetallic PdMo (2D Au@PdMo) nanozymes and electrochemical reductive desorption. The 2D Au@PdMo nanozymes possessed high-efficiency peroxidase-like activity and were assembled with an aptamer composed of a thiol-modified epithelial specific cell adhesion molecule (EpCAM) to strengthen CTCs adhesion. Moreover, the electrode surface was decorated with highly fractal Au nanostructures (HFAuNSs) composites due to the similarity in fractal nanostructure with the CTCs membrane to enhance the CTCs anchoring efficiency and release capability. The captured CTCs could be further efficiently dissociated and nondestructively released from the modified electrodes upon electrochemical reductive desorption. The designed cytosensor showed an excellent analytical performance, with a wide linear range from 2 to 1 × 105 cells mL-1 and low limit of detection (LOD) of 2 cells mL-1 (S/N = 3) at the working potential in the range -0.6 to 0.2 V. A satisfactory CTCs release reaching a range of 93.7-97.4% with acceptable RSD from 3.55 to 6.41% and good cell viability was obtained. Thus, the developed cytosensor might provide a potential alternative to perform CTC-based liquid biopsies, with promising applications in early diagnosis of tumors. Preparation and mechanism of desorption of the cytosensor based on 2D Au@PdMo nanozymes and electrochemical reductive desorption for the detection and release of CTCs. A Preparation procedure of the Apt/Au@PbMo bioconjugates. B Fabrication process of the sandwich-type cytosensor. C Electrochemical signal produced by the Au@PdMo nanozymes. D Mechanism of electrochemical reductive desorption for CTCs release.
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Affiliation(s)
- Wei Yang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.,Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, 310014, China
| | - Lu Fan
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.,NMI Natural and Medical Sciences Institute, University of Tübingen, 72770, Reutlingen, Germany
| | - Zhen Guo
- Department of Clinical Laboratory, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
| | - Haiping Wu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Junman Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Changjin Liu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yurong Yan
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
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5
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Divakara MB, Ashwini R, Santosh MS, Priyanka M, Ravikumar CR, Viswanatha R, Murthy HCA. Early-stage culprit in protein misfolding diseases investigated using electrochemical parameters: New insights over peptide-membrane interactions. Biomed Pharmacother 2021; 142:111964. [PMID: 34329823 DOI: 10.1016/j.biopha.2021.111964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
The dysfunctioning of β-cells caused by the unspecific misfolding of the human islet amyloid polypeptide (hIAPP) at the membrane results in type 2 diabetes mellitus. Here, we report for the first time, the early-stage interaction of hIAPP oligomers on the DMPC (1,2-dimyristoyl-sn-glycero-3-phosphocholine) lipid membrane using electrochemical parameters. Electrochemical techniques are better than other techniques to detect hIAPP at significantly lower concentrations. The surface level interactions between the peptide (hIAPP) and lipid membrane (DMPC) were investigated using atomic force microscopy (AFM), confocal microscopy (CM) and electrochemical techniques such as Tafel polarization, cyclic voltammetry (CV), differential pulse voltammetry (DPV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). Inserting IAPP into the fluid domains results in breaking the lipid-to-lipid interaction, leading to restriction of membrane mobility. The SLateral values of the liposome and IAPP co-solubilized liposome indicates the cooperative insertion of IAPP. Further, a new method of immobilizing a membrane to the gold surface has been employed, resulting in an electrical contact with the buffer, preventing the direct utilization of a steady-state voltage across the bilayer. The electrochemical studies revealed that the charge transfer resistance decreased for 3-mercaptopropanoic acid modified gold (MPA-Au) electrode coated with the liposome and after the addition of IAPP, followed by an increase in the capacitance. The present study has opened up new dimensions to the understanding of peptide-membrane interactions and shows different experimental approaches for the future researchers in this domain.
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Affiliation(s)
- M B Divakara
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - R Ashwini
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - M S Santosh
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India.
| | - M Priyanka
- East Point college of Medical Sciences and Research Centre (affiliated to RGUHS), Jnana Prabha, Virgonagar Post, Bidrahalli, Bengaluru 560049, Karnataka, India
| | - C R Ravikumar
- Research Centre, Department of Science, East West Institute of Technology, Bengaluru 560091, India
| | - R Viswanatha
- Centre for Incubation, Innovation, Research and Consultancy (CIIRC), Jyothy Institute of Technology (Affiliated to Visvesvaraya Technological University (VTU), Belgaum), Thataguni, Off Kanakapura Road, Bengaluru 560082, Karnataka, India
| | - H C Ananda Murthy
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P O Box 1888, Adama, Ethiopia.
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Li Y, Luo Z, Li G, Belwal T, Li L, Xu Y, Su B, Lin X. Interference-free Detection of Caffeine in Complex Matrices Using a Nanochannel Electrode Modified with Binary Hydrophilic-Hydrophobic PDMS. ACS Sens 2021; 6:1604-1612. [PMID: 33752324 DOI: 10.1021/acssensors.1c00004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the present study, a novel electrochemical sensor for the direct detection of caffeine in the crude sample has been prepared by plasma-triggered polydimethylsiloxane (PDMS) deposition on the indium tin oxide electrodes supported with silica nanochannels. The deposited PDMS contains both the original hydrophobic and oxidized hydrophilic PDMS oligomers. Nanochannels modified with these two kinds of PDMS with opposite wettability only allow the passage of small amphiphilic molecules such as caffeine, while other molecules including hydrophilic, hydrophobic, and large ones were all rejected. With the excellent shielding properties, the modified nanochannel electrode exhibits excellent anti-interference and antifouling capability, which could be directly used for the detection of caffeine in real crude food such as tea, milk, coffee, and coke without sample pretreatments. Moreover, the modified electrode has good repeatability and stability. In contrast, severe interference was observed when conventional electrodes were used directly in these unprocessed samples. The linear ranges of caffeine were determined to be between 50 nmol/L and 700 μmol/L, with a limit of detection of 20 nmol/L. The developed sensor provides a very simple, rapid, and cost-effective way for the interference-free and fouling-free analysis of specific amphiphilic compounds and can be extended to a wide range of applications.
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Affiliation(s)
- Yintao Li
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Zisheng Luo
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
- China National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Gangfeng Li
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Tarun Belwal
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
| | - Li Li
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
- China National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China
| | - Yanqun Xu
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Xingyu Lin
- College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Zhejiang University, Hangzhou 310058, China
- China National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
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7
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Cheng HW, Wang S, Porter MD, Zhong CJ. Molecularly-tunable nanoelectrode arrays created by harnessing intermolecular interactions. Chem Sci 2021; 12:6081-6090. [PMID: 33996004 PMCID: PMC8098684 DOI: 10.1039/d0sc06955h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Intermolecular interactions play a critical role in the binding strength of molecular assemblies on surfaces. The ability to harness them enables molecularly-tunable interfacial structures and properties. Herein we report the tuning of the intermolecular interactions in monolayer assemblies derived from organothiols of different structures for the creation of nanoelectrode arrays or ensembles with effective mass transport by a molecular-level perforation strategy. The homo- and hetero-intermolecular interactions can be fully controlled, which is demonstrated not only by thermodynamic analysis of the fractional coverage but also by surface infrared reflection absorption and X-ray photoelectron spectroscopic characterizations. This understanding enables controllable electrochemical perforation for the creation of ensembles or arrays of channels across the monolayer thickness with molecular and nanoscale dimensions. Redox reactions on the nanoelectrode array display molecular tunability with a radial diffusion characteristic in good agreement with theoretical simulation results. These findings have implications for designing membrane-type ion-gating, electrochemical sensing, and electrochemical energy storage devices with molecular level tunability. Intermolecular interactions in monolayer assembly are harnessed for creating molecularly-tunable nanoelectrode arrays or ensembles.![]()
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Affiliation(s)
- Han-Wen Cheng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology Shanghai 201418 China .,Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
| | - Shan Wang
- Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
| | - Marc D Porter
- Department of Chemistry and Chemical Engineering, University of Utah Salt Lake City Utah 84112 USA
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton Binghamton New York 13902 USA
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8
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Ilyas AMO, Alam MK, Musah JD, Saw LO, Venkatesh S, Yeung CC, Yang M, Vellaisamy ALR, Lau C. Development of a carboxyl-terminated indium tin oxide electrode for improving cell adhesion and facilitating low noise, real-time impedance measurements. Am J Physiol Cell Physiol 2021; 320:C974-C986. [PMID: 33689477 DOI: 10.1152/ajpcell.00537.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The working electrode's surface property is crucial to cell adhesion and signal collection in electric cell-substrate impedance sensing (ECIS). To date, the indium tin oxide (ITO)-based working electrode is of interest in ECIS study due to its high transparency and biocompatibility. Of great concern is the impedance signal loss, distortion, and data interpretation conflict profoundly created by the movement of multiple cells during ECIS study. Here, a carboxyl-terminated ITO substrate was prepared by stepwise surface amino silanization, with N-hydroxy succinimide (NHS) and 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride (EDC) treatment, respectively. We investigated the stepwise changes in the property of the treated ITO, cell-substrate adhesion, collective cell mobility, and time course of change in absolute impedance from multiple Chinese hamster ovary (CHO) cells [(Δt-Δ|Z|)CELLS]. The carboxyl-terminated ITO substrate with a surface roughness of 6.37 nm shows enhanced conductivity, 75% visible light transparency, improved cell adherence, reduced collective cell migration speed by approximately twofold, and diminished signal distortion in the [(Δt-Δ|Z|)CELLS]. Thus, our study provides an ITO surface-treatment strategy to reduce multiple cell movement effects and to obtain essential cell information from the ECIS study of multiple cells through undistorted (Δt-Δ|Z|)CELLS.
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Affiliation(s)
- A M Olabisi Ilyas
- Department of Physics, City University of Hong Kong, Kowloon, Special Administrative Region of China.,Department of Physics, Federal University Oye-Ekiti, Oye-Ekiti, Nigeria
| | - Md Kowsar Alam
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Special Administrative Region of China.,Department of Physics, University of Chittagong, Chittagong, Bangladesh
| | - Jamal-Deen Musah
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Lin Oo Saw
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Shishir Venkatesh
- State Key Laboratory of Terahertz and Millimeter Waves, Department of Material Science and Engineering, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Chi-Chung Yeung
- Department of Chemistry, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - Mengsu Yang
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Special Administrative Region of China
| | - A L R Vellaisamy
- James Watt School of Engineering, University of Glasgow, Glasgow, United Kingdom
| | - Condon Lau
- Department of Physics, City University of Hong Kong, Kowloon, Special Administrative Region of China
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9
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Duan Y, Chen J, Jin Y, Tu Q, Wang S, Xiang J. Antibody-Free Determinations of Low-Mass, Soluble Oligomers of Aβ 42 and Aβ 40 by Planar Bilayer Lipid Membrane-Based Electrochemical Biosensor. Anal Chem 2021; 93:3611-3617. [PMID: 33571410 DOI: 10.1021/acs.analchem.0c05281] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease among the elderly. Abnormal aggregates of both β-amyloid peptide (Aβ) subtypes, Aβ42 and Aβ40, are the typical neuropathology hallmarks of AD. However, because of the lack of specific recognition elements such as an antibody and aptamer, it is difficult to differentiate and determine the oligomers of Aβ42 and Aβ40 in clinic. In this paper, we developed a planar bilayer lipid membrane (BLM)-based electrochemical biosensor. According to the dynamic differences on oligomer-induced BLM damage, both low-mass, soluble oligomers of Aβ42 and Aβ40 (L-Aβ42O and L-Aβ40O) were measured in turn by electrochemical impedance spectroscopy. The BLM was supported by a porous 11-mercaptoundecanoic acid layer on a gold electrode, which amplified the impedance signal corresponding to the membrane damage and improved the detection sensitivity. The weakly charged surface of the BLM ensured the low non-specific adsorption of coexisting proteins in cerebrospinal fluid (CSF). Using the electrochemical biosensor, L-Aβ42O was determined within 20 min, with a linear range from 5 to 500 pM and a detection limit of 3 pM. Meanwhile, L-Aβ40O was determined within 60 min, with a linear range from 60 pM to 6.0 nM and a detection limit of 26 pM. The recoveries in oligomer-spiked artificial CSF and human CSF samples confirmed the accuracy and applicability of this proposed method in clinic. This work provides an antibody-free, highly selective, and sensitive method for simultaneous detections of L-Aβ42O and L-Aβ40O in real CSF samples, which is significant for the early diagnosis and prognosis of AD.
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Affiliation(s)
- Yuemei Duan
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jia Chen
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yan Jin
- Operation Center, The Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Qiuyun Tu
- Department of Geriatrics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, China
| | - Shuhui Wang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Juan Xiang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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10
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Improved sensitivity and reproducibility in electrochemical detection of trace mercury (II) by bromide ion & electrochemical oxidation. Talanta 2019; 203:186-193. [DOI: 10.1016/j.talanta.2019.05.072] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/06/2019] [Accepted: 05/16/2019] [Indexed: 12/21/2022]
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11
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Quantitative accounting of dye leakage and photobleaching in single lipid vesicle measurements: Implications for biomacromolecular interaction analysis. Colloids Surf B Biointerfaces 2019; 182:110338. [DOI: 10.1016/j.colsurfb.2019.06.067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 06/08/2019] [Accepted: 06/28/2019] [Indexed: 02/05/2023]
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12
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Huang X, Chen J, Yan C, Shao H. Probing a Reversible Cationic Switch on a Mixed Self-Assembled Monolayer Using Scanning Electrochemical Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10772-10779. [PMID: 31361491 DOI: 10.1021/acs.langmuir.9b01429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Probing a switch on biomimic membrane surfaces would offer some references to the research on permeability of cytomembranes. In this work, a mixed 11-mercaptoundecanoic acid/1-undecanethiol self-assembled monolayer (MUA/UT SAM) was constructed as a model of a biomembrane. In this mixed SAM, the MUA molecules work as functional parts for the switch and the UT molecules work as diluents. The surface coverage, wetting property, and pKa of this mixed SAM all have been well-inspected. The mixed SAM exhibits excellent switchable properties for cations, which is well-monitored by scanning electrochemical microscopy. When the pH of a solution is higher than the pKa, protons would stimulate a shift of dissociation equilibrium of terminal carboxyl groups. The dissociated carboxylate ions would lead to a switch on the state of the SAM. Otherwise, the SAM shows an off state when the pH is lower than the pKa. In addition, the repeatability, applicability, and the mechanism of the switch all have been well-evaluated.
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Affiliation(s)
- Ximing Huang
- Beijing Key Laboratory of Photoelectronic and Electrophotonic Conversion Materials, Key Laboratory of Cluster Science (Ministry of Education), School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 102488 , P. R. China
| | - Jingchao Chen
- Beijing Key Laboratory of Photoelectronic and Electrophotonic Conversion Materials, Key Laboratory of Cluster Science (Ministry of Education), School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 102488 , P. R. China
| | - Chunxia Yan
- Beijing Key Laboratory of Photoelectronic and Electrophotonic Conversion Materials, Key Laboratory of Cluster Science (Ministry of Education), School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 102488 , P. R. China
| | - Huibo Shao
- Beijing Key Laboratory of Photoelectronic and Electrophotonic Conversion Materials, Key Laboratory of Cluster Science (Ministry of Education), School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 102488 , P. R. China
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Kou L, Duan Y, Wang P, Fu Y, Darabedian N, He Y, Jiang D, Chen D, Xiang J, Liu G, Zhou F. Norepinephrine-Fe(III)-ATP Ternary Complex and Its Relevance to Parkinson's Disease. ACS Chem Neurosci 2019; 10:2777-2785. [PMID: 31059226 DOI: 10.1021/acschemneuro.9b00009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The aberrant autoxidation of norepinephrine (NE) in the presence of oxygen, which is accelerated by Fe(III), has been linked to the pathogenesis of the Parkinson's disease (PD). Adenosine triphosphate (ATP), as a neurotransmitter whose release can be stimulated by tissue damage and oxidative stress, is co-stored and often co-released with NE in presynaptic terminals. We have shown previously that ATP inhibits the iron-catalyzed dopamine oxidation, thereby decreasing the production of certain neurotoxins such as 6-hydroxydopamine. Whether ATP plays a similar role in Fe(III)-catalyzed NE oxidation and how it maintains the NE stability have not been investigated. Here, we studied the coordination in a ternary complex among NE, Fe(III), and ATP, and found that Fe(III) is coordinated as a octahedral center by NE and ATP. Voltammetry and mass spectrometry were employed to examine this ternary complex's modulation of the NE autoxidation. NE-Fe(III)-ATP plays a protective role to modulate the autoxidation and Fe(III)-catalyzed oxidation of NE. The ternary complex can be detected in the substantia nigra (SN), locus coeruleus (LC), and striatum regions of C57BL/6 wild-type mice. In contrast, the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mouse brains displayed a significant decrease of the ternary complex in the SN region and an increase in the LC and striatum areas. We posit that the ternary complex is produced by noradrenergic neurons as a protective regulator against neuronal damage and oxidative stress, contributing to the lower vulnerability of LC neurons with respect to that of SN neurons.
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Affiliation(s)
- Lu Kou
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yuemei Duan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Pengcheng Wang
- Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, P. R. China
| | - Yaru Fu
- Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, P. R. China
| | - Nerek Darabedian
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0744, United States
| | - Yonghui He
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650031, P. R. China
| | - Dianlu Jiang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, California 90032, United States
| | - Dinglong Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Juan Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Guokun Liu
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Feimeng Zhou
- Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan 250022, P. R. China
- Department of Chemistry and Biochemistry, California State University, Los Angeles, California 90032, United States
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Liu S, Peng J, Chen L, Sebastián P, Feliu JM, Yan J, Mao B. In-situ STM and AFM Studies on Electrochemical Interfaces in imidazolium-based ionic liquids. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.066] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Zeng N, Xiang J. Detection of KRAS G12D point mutation level by anchor-like DNA electrochemical biosensor. Talanta 2019; 198:111-117. [DOI: 10.1016/j.talanta.2019.01.105] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/25/2019] [Accepted: 01/29/2019] [Indexed: 01/04/2023]
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16
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Jiang Z, Shen B, Xiang J. Metal-dependent interactions of metallothionein-3 β-domain with amyloid-β peptide and related physiological implications. J Inorg Biochem 2019; 196:110693. [PMID: 31005822 DOI: 10.1016/j.jinorgbio.2019.110693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 04/10/2019] [Accepted: 04/12/2019] [Indexed: 01/09/2023]
Abstract
Aberrant interactions of metal ions with amyloid-β peptide (Aβ) can potentiate Alzheimer's disease (AD) by participating in the aggregation process of Aβ and in the generation of reactive oxygen species (ROS). Metallothionein-3 (MT3), which is aberrantly expressed in AD brains, is believed to play an important role in the AD progression due to its ability of maintaining metal homeostasis and scavenging ROS. However, the related molecular mechanism is not clear. In this work, the metal-dependent interactions of MT3 β-domain (βMT3) with amyloid-β peptide (Aβ) were systematically studied. The results showed that Zn3-βMT3 has a higher affinity to Aβ (Kd: ~0.7 μM) than Cu4-βMT3 (Kd: ~22 μM). In Zn3-βMT3, both Pro7 and Pro9 face outwards with their five-member rings in parallel, favoring their binding with aromatic residues via CH/π interactions. Two aromatic residues (Phe4 and Tyr10) in Aβ were identified as the specific binding sites for βMT3. Based on these, we posit a characteristic in-situ protection role of Zn-MT3 in inhibiting the Cu2+-induced Aβ neurotoxicity, in which stable Zn-MT3/Aβ complex forms via the Zn3-βMT3/Aβ interaction and effectively prevents the formation of Cu-Aβ in high viscosity physiological fluids. Our results provide the mechanistic pathway and the specific roles of βMT3 in its protective bioactivity against AD progression, which means significant for elucidating the function of MT3 in AD neuropathology and for designing a MT3-related therapeutic strategy for AD.
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Affiliation(s)
- Zhongxiu Jiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Baochai Shen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Juan Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
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Yin Z, Wang S, Shen B, Deng C, Tu Q, Jin Y, Shen L, Jiao B, Xiang J. Coimmunocapture and Electrochemical Quantitation of Total and Phosphorylated Amyloid-β40 Monomers. Anal Chem 2019; 91:3539-3545. [PMID: 30724072 DOI: 10.1021/acs.analchem.8b05307] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhenzhen Yin
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Shuhui Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Baochai Shen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Chunyan Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
| | - Qiuyun Tu
- Department of Geratology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan PR China
| | - Yan Jin
- Department of Geratology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan PR China
| | - Lu Shen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, Hunan PR China
| | - Bin Jiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, Hunan PR China
| | - Juan Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China
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