1
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Xia N, Gao F, Zhang J, Wang J, Huang Y. Overview on the Development of Electrochemical Immunosensors by the Signal Amplification of Enzyme- or Nanozyme-Based Catalysis Plus Redox Cycling. Molecules 2024; 29:2796. [PMID: 38930860 PMCID: PMC11206384 DOI: 10.3390/molecules29122796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Enzyme-linked electrochemical immunosensors have attracted considerable attention for the sensitive and selective detection of various targets in clinical diagnosis, food quality control, and environmental analysis. In order to improve the performances of conventional immunoassays, significant efforts have been made to couple enzyme-linked or nanozyme-based catalysis and redox cycling for signal amplification. The current review summarizes the recent advances in the development of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling for signal amplification. The special features of redox cycling reactions and their synergistic functions in signal amplification are discussed. Additionally, the current challenges and future directions of enzyme- or nanozyme-based electrochemical immunosensors with redox cycling are addressed.
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Affiliation(s)
- Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Fengli Gao
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiwen Zhang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jiaqiang Wang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yaliang Huang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
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2
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Yoon N, Jung Y, Kim G, Kwon J, Yang H. Low-interference and sensitive electrochemical detection of glucose and lactate using boron-doped diamond electrode and electron mediator menadione. ANAL SCI 2024; 40:853-861. [PMID: 38246930 DOI: 10.1007/s44211-023-00497-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024]
Abstract
To minimize background interference in electrochemical enzymatic biosensors employing electron mediators, it is essential for the electrochemical oxidation of electroactive interfering species (ISs), such as ascorbic acid (AA), to proceed slowly, and for the redox reactions between electron mediators and ISs to occur at a low rate. In this study, we introduce a novel combination of a working electrode and an electron mediator that effectively mitigates interference effects. Compared to commonly used electrodes such as Au, glassy carbon, and indium tin oxide (ITO), boron-doped diamond (BDD) electrodes demonstrate significantly lower anodic current (i.e., lower background levels) in the presence of AA. Additionally, menadione (MD) exhibits notably slower reactivity with AA compared to other electron mediators such as Ru(NH3)63+, 4-amino-1-naphthol, and 1,4-naphthoquinone, primarily due to the lower formal potential of MD compared to AA. This synergistic combination of BDD electrode and MD is effectively applied in three biosensors: (i) glucose detection using electrochemical-enzymatic (EN) redox cycling, (ii) glucose detection using electrochemical-enzymatic-enzymatic (ENN) redox cycling, and (iii) lactate detection using ENN redox cycling. Our developed approach significantly outperforms the combination of ITO electrode and MD in minimizing IS interference. Glucose in artificial serum can be detected with detection limits of ~ 20 μM and ~ 3 μM in EN and ENN redox cycling, respectively. Furthermore, lactate in human serum can be detected with a detection limit of ~ 30 μM. This study demonstrates sensitive glucose and lactate detection with minimal interference, eliminating the need for (bio)chemical agents to remove interfering species.
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Affiliation(s)
- Nakyeong Yoon
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Youngjin Jung
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Gyeongho Kim
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Jungwook Kwon
- Department of Chemistry, Pusan National University, Busan, 46241, Korea
| | - Haesik Yang
- Department of Chemistry, Pusan National University, Busan, 46241, Korea.
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3
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Huang YT, Xu KX, Liu XS, Li Z, Hu J, Zhang L, Zhu YC, Zhao WW, Chen HY, Xu JJ. Chemical Redox Cycling in an Organic Photoelectrochemical Transistor: Toward Dual Chemical and Electronic Amplification for Bioanalysis. Anal Chem 2023; 95:17912-17919. [PMID: 37972240 DOI: 10.1021/acs.analchem.3c04263] [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: 11/19/2023]
Abstract
The organic photoelectrochemical transistor (OPECT) has been proven to be a promising platform to study the rich light-matter-bio interplay toward advanced biomolecular detection, yet current OPECT is highly restrained to its intrinsic electronic amplification. Herein, this work first combines chemical amplification with electronic amplification in OPECT for dual-amplified bioanalytics with high current gain, which is exemplified by human immunoglobulin G (HIgG)-dependent sandwich immunorecognition and subsequent alkaline phosphatase (ALP)-mediated chemical redox cycling (CRC) on a metal-organic framework (MOF)-derived BiVO4/WO3 gate. The target-dependent redox cycling of ascorbic acid (AA) acting as an effective electron donor could lead to an amplified modulation against the polymer channel, as indicated by the channel current. The as-developed bioanalysis could achieve sensitive HIgG detection with a good analytical performance. This work features the dual chemical and electronic amplification for OPECT bioanalysis and is expected to stimulate further interest in the design of CRC-assisted OPECT bioassays.
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Affiliation(s)
- Yu-Ting Huang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ke-Xin Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing-Shi Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zheng Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ling Zhang
- School of Electronic and Information Engineering, Jinling Institute of Technology, Nanjing 211169, China
| | - Yuan-Cheng Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Wei-Wei Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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4
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Chen C, La M, Yi X, Huang M, Xia N, Zhou Y. Progress in Electrochemical Immunosensors with Alkaline Phosphatase as the Signal Label. BIOSENSORS 2023; 13:855. [PMID: 37754089 PMCID: PMC10526794 DOI: 10.3390/bios13090855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023]
Abstract
Electrochemical immunosensors have shown great potential in clinical diagnosis, food safety, environmental protection, and other fields. The feasible and innovative combination of enzyme catalysis and other signal-amplified elements has yielded exciting progress in the development of electrochemical immunosensors. Alkaline phosphatase (ALP) is one of the most popularly used enzyme reporters in bioassays. It has been widely utilized to design electrochemical immunosensors owing to its significant advantages (e.g., high catalytic activity, high turnover number, and excellent substrate specificity). In this work, we summarized the achievements of electrochemical immunosensors with ALP as the signal reporter. We mainly focused on detection principles and signal amplification strategies and briefly discussed the challenges regarding how to further improve the performance of ALP-based immunoassays.
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Affiliation(s)
- Changdong Chen
- College of Chemical and Environmental Engineering, Pingdingshan University, Pingdingshan 476000, China
| | - Ming La
- College of Chemical and Environmental Engineering, Pingdingshan University, Pingdingshan 476000, China
| | - Xinyao Yi
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Mengjie Huang
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China
| | - Yanbiao Zhou
- College of Chemical and Environmental Engineering, Pingdingshan University, Pingdingshan 476000, China
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5
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Prayikaputri PU, Park S, Kim S, Yoon YH, Kim S, Yang H. Sensitive electrochemical immunosensor via amide hydrolysis by DT-diaphorase combined with five redox-cycling reactions. Biosens Bioelectron 2023; 224:115058. [PMID: 36630744 DOI: 10.1016/j.bios.2022.115058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/07/2022] [Accepted: 12/31/2022] [Indexed: 01/06/2023]
Abstract
Amide hydrolysis using enzyme labels, such as proteases, occurs at a slower rate than phosphoester and carboxyl ester hydrolysis. Thus, it is not very useful for obtaining high signal amplification in biosensors. However, amide hydrolysis is less sensitive to nonenzymatic spontaneous hydrolysis, allowing for lower background levels. Herein, we report that amide hydrolysis by DT-diaphorase (DT-D) occurs rapidly and that its combination with five redox-cycling reactions allows for the development of a highly sensitive electrochemical immunosensor. DT-D rapidly generates ortho-aminohydroxy-naphthalene (oAN) from its amide substrate via amide hydrolysis, which not even trypsin, a highly catalytic protease, can achieve. NADH, which is required for amide hydrolysis, advantageously acts as a reducing agent for rapid electrooxidation-based redox-cycling reactions. In the presence of oAN, DT-D, and NADH, two redox-cycling reactions rapidly occur. In the additional presence of an electron mediator, Ru(NH3)63+ [Ru(III)], three more redox-cycling reactions occur because Ru(III) reacts rapidly with oAN and DT-D. Although the O2-related redox-cycling reactions and redox reaction decrease electrochemical signals, this signal-decreasing effect is not significant in air-saturated solutions. The slow electrooxidation of NADH at an indium tin oxide electrode and sluggish reaction between NADH and Ru(III) allow for low electrochemical backgrounds. When the developed signal amplification scheme is tested for the sandwich-type electrochemical detection of parathyroid hormone (PTH), a detection limit of ∼1 pg/mL is obtained. The detection method is highly sensitive and can accurately measure PTH in serum samples.
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Affiliation(s)
- Putu Udiyani Prayikaputri
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | - Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | - Seonghye Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | | | - Suhkmann Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea.
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6
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Shaban SM, Byeok Jo S, Hafez E, Ho Cho J, Kim DH. A comprehensive overview on alkaline phosphatase targeting and reporting assays. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214567] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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7
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Chozinski T, Ferguson BS, Fisher W, Ge S, Gong Q, Kang H, McDermott J, Scott A, Shi W, Trausch JJ, Verch T, Vukovich M, Wang J, Wu JE, Yang Q. Development of an Aptamer-Based Electrochemical Microfluidic Device for Viral Vaccine Quantitation. Anal Chem 2022; 94:6146-6155. [PMID: 35410467 DOI: 10.1021/acs.analchem.1c05093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Global deployment of vaccines poses significant challenges in the distribution and use of the accompanying immunoassays, one of the standard methods for quality control of vaccines, particularly when establishing assays in countries worldwide to support testing/release upon importation. This work describes our effort toward developing an integrated, portable device to carry out affinity assays for viral particles quantification in viral vaccines by incorporating (i) aptamers, (ii) microfluidic devices, and (iii) electrochemical detection. We generated and characterized more than eight aptamers against multiple membrane proteins of cytomegalovirus (CMV), which we used as a model system and designed and fabricated electrochemical microfluidic devices to measure CMV concentrations in a candidate vaccine under development. The aptamer-based assays provided a half maximal effective concentration, EC50, of 12 U/mL, comparable to that of an ELISA using a pair of antibodies (EC50 60 U/mL). The device measured relative CMV concentrations accurately (within ±10% bias) and precisely (11%, percent relative standard deviation). This work represents the critical first steps toward developing simple, affordable, and robust affinity assays for global deployment without the need for sensitive equipment and extensive analyst training.
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Affiliation(s)
- Tyler Chozinski
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - B Scott Ferguson
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - William Fisher
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Shencheng Ge
- Merck & Co., Inc., 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Qiang Gong
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Hui Kang
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - John McDermott
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Alexander Scott
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Wentao Shi
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Jeremiah J Trausch
- Merck & Co., Inc., 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Thorsten Verch
- Merck & Co., Inc., 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Matthew Vukovich
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Jinpeng Wang
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - J Emma Wu
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
| | - Qin Yang
- Aptitude Medical Systems, 125 Cremona Drive, Suite 100, Goleta, California 93117, United States
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8
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Ma X, Deng D, Xia N, Hao Y, Liu L. Electrochemical Immunosensors with PQQ-Decorated Carbon Nanotubes as Signal Labels for Electrocatalytic Oxidation of Tris(2-carboxyethyl)phosphine. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1757. [PMID: 34361143 PMCID: PMC8308108 DOI: 10.3390/nano11071757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 11/16/2022]
Abstract
Nanocatalysts are a promising alternative to natural enzymes as the signal labels of electrochemical biosensors. However, the surface modification of nanocatalysts and sensor electrodes with recognition elements and blockers may form a barrier to direct electron transfer, thus limiting the application of nanocatalysts in electrochemical immunoassays. Electron mediators can accelerate the electron transfer between nanocatalysts and electrodes. Nevertheless, it is hard to simultaneously achieve fast electron exchange between nanocatalysts and redox mediators as well as substrates. This work presents a scheme for the design of electrochemical immunosensors with nanocatalysts as signal labels, in which pyrroloquinoline quinone (PQQ) is the redox-active center of the nanocatalyst. PQQ was decorated on the surface of carbon nanotubes to catalyze the electrochemical oxidation of tris(2-carboxyethyl)phosphine (TCEP) with ferrocenylmethanol (FcM) as the electron mediator. With prostate-specific antigen (PSA) as the model analyte, the detection limit of the sandwich-type immunosensor was found to be 5 pg/mL. The keys to success for this scheme are the slow chemical reaction between TCEP and ferricinum ions, and the high turnover frequency between ferricinum ions, PQQ. and TCEP. This work should be valuable for designing of novel nanolabels and nanocatalytic schemes for electrochemical biosensors.
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Affiliation(s)
- Xiaohua Ma
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Shangqiu Normal University, Shangqiu 476000, China;
| | - Dehua Deng
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China; (D.D.); (N.X.)
| | - Ning Xia
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China; (D.D.); (N.X.)
| | - Yuanqiang Hao
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Shangqiu Normal University, Shangqiu 476000, China;
| | - Lin Liu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Shangqiu Normal University, Shangqiu 476000, China;
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China; (D.D.); (N.X.)
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9
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Jiaul Haque A, Kwon J, Kim J, Kim G, Lee N, Ho Yoon Y, Yang H. Sensitive and Low‐background Electrochemical Immunosensor Employing Glucose Dehydrogenase and 1,10‐Phenanthroline‐5,6‐dione. ELECTROANAL 2021. [DOI: 10.1002/elan.202100079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Al‐Monsur Jiaul Haque
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Jungwook Kwon
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Jihyeon Kim
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | - Gyeongho Kim
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
| | | | | | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials Pusan National University Busan 46241 Korea
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10
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Abstract
Biological signaling pathways are underpinned by protein switches that sense and respond to molecular inputs. Inspired by nature, engineered protein switches have been designed to directly transduce analyte binding into a quantitative signal in a simple, wash-free, homogeneous assay format. As such, they offer great potential to underpin point-of-need diagnostics that are needed across broad sectors to improve access, costs, and speed compared to laboratory assays. Despite this, protein switch assays are not yet in routine diagnostic use, and a number of barriers to uptake must be overcome to realize this potential. Here, we review the opportunities and challenges in engineering protein switches for rapid diagnostic tests. We evaluate how their design, comprising a recognition element, reporter, and switching mechanism, relates to performance and identify areas for improvement to guide further optimization. Recent modular switches that enable new analytes to be targeted without redesign are crucial to ensure robust and efficient development processes. The importance of translational steps toward practical implementation, including integration into a user-friendly device and thorough assay validation, is also discussed.
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Affiliation(s)
- Hope Adamson
- School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Lars J. C. Jeuken
- School of Biomedical Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
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11
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Yan K, Nandhakumar P, Bhatia A, Lee NS, Yoon YH, Yang H. Electrochemical immunoassay based on choline oxidase-peroxidase enzymatic cascade. Biosens Bioelectron 2020; 171:112727. [PMID: 33069956 DOI: 10.1016/j.bios.2020.112727] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/04/2020] [Accepted: 10/12/2020] [Indexed: 12/24/2022]
Abstract
Horseradish peroxidase (HRP)-based electrochemical immunoassays are considered promising techniques for point-of-care clinical diagnostics, but the necessary addition of unstable H2O2 in the enzymatic system may hinder their practical application. Although glucose oxidase (GOx) has been widely explored for in situ generation of H2O2 in HRP-based immunoassay, the GOx-catalyzed reduction of oxidized peroxidase substrate may limit the immunosensing performance. Here, we report a sensitive electrochemical immunosensor based on a choline oxidase (ChOx)-HRP cascade reaction. In this design, ChOx catalyzes the oxidation of choline, during which H2O2 is generated in situ and thus oxidizes acetaminophen (APAP) in the presence of HRP. The electrochemical behavior of APAP in the ChOx-HRP cascade was compared with that of the commonly used GOx-HRP cascade, which confirmed that ChOx could be a superior preceding enzyme for sensitive immunoassay based on the bienzymatic cascade. The developed ChOx-HRP cascade was also further explored for a sandwich-type electrochemical immunoassay of parathyroid hormone in artificial and clinical serum. The calculated detection limit was ~3 pg/mL, indicating that the ChOx-HRP cascade is especially promising for highly sensitive electrochemical immunoassays when APAP is used as the peroxidase substrate.
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Affiliation(s)
- Kai Yan
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, South Korea
| | - Ponnusamy Nandhakumar
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, South Korea
| | - Aman Bhatia
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, South Korea
| | | | | | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, South Korea.
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12
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Nandhakumar P, Ichzan AM, Lee NS, Yoon YH, Ma S, Kim S, Yang H. Carboxyl Esterase-Like Activity of DT-Diaphorase and Its Use for Signal Amplification. ACS Sens 2019; 4:2966-2973. [PMID: 31647639 DOI: 10.1021/acssensors.9b01448] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Carboxyl esterases show limited use as catalytic labels in bioassays because of slow enzymatic reaction. We report that DT-diaphorase from Bacillus stearothermophilus (DT-D, EC 1.6.99.-) shows high carboxyl esterase-like activity in the presence of reduced β-nicotinamide adenine dinucleotide (NADH) and may be used as a better catalytic label than carboxyl esterases. DT-D is a redox enzyme and can participate in signal-amplifying redox cycling. Thus, an electrochemical immunosensor using a DT-D label allows for triple signal amplification based on (i) hydrolysis of a carboxyl ester, (ii) electrochemical-chemical (EC) redox cycling involving an electrode, a hydrolysis product, and NADH, and (iii) electrochemical-enzymatic (EN) redox cycling involving an electrode, a hydrolysis product, DT-D, and NADH. Ester hydrolysis by DT-D is confirmed via spectrophotometric measurement of a chromogenic substrate (4-nitrophenyl acetate) and 1H NMR spectra. Among two phenyl acetates and four naphthyl acetates considered, 4-aminonaphthalene-1-yl acetate (4-NH2-NAc) is chosen as the best acetyl ester substrate because 4-NH2-NAc is stable, its hydrolysis is slow in the absence of DT-D, its hydrolysis is very fast in the presence of DT-D, and EC and EN redox cycling involving the hydrolysis product (4-amino-1-naphthol) is rapid. However, hydrolysis of 4-NH2-NAc by esterase from porcine liver (EC 3.1.1.1.) is very slow. When DT-D is applied to sandwich-type detection of thyroid-stimulating hormone in artificial serum, the detection limit is ∼2 pg/mL, indicating that the developed immunosensor is highly sensitive because of triple signal amplification. DT-D may be used as a catalytic label in sensitive and stable bioassays instead of common alkaline phosphatase and horseradish peroxidase.
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Affiliation(s)
- Ponnusamy Nandhakumar
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Andi Muhammad Ichzan
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | | | | | - Seohee Ma
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Suhkmann Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
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13
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Ti3C2 MXene nanosheet-based capacitance immunoassay with tyramine-enzyme repeats to detect prostate-specific antigen on interdigitated micro-comb electrode. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.07.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Guo L, Du H, Zhao H, Li J. Amplified Electrochemical Response of Phenol by Oxygenation of Tyrosinase Coupling with Electrochemical‐chemical‐chemical Redox Cycle. ELECTROANAL 2019. [DOI: 10.1002/elan.201900174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Liping Guo
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Hui Du
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Huiying Zhao
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
| | - Jian Li
- College of Chemistry and Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical ChemistryNorthwest University Xi'an 710069 P. R. China
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15
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Qiao Z, Zhang H, Zhou Y, Zheng J. C 60 Mediated Ion Pair Interaction for Label-Free Electrochemical Immunosensing with Nanoporous Anodic Alumina Nanochannels. Anal Chem 2019; 91:5125-5132. [PMID: 30908018 DOI: 10.1021/acs.analchem.8b05673] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Label-free biosensing based on the nanoporous anodic alumina (NAA) membrane emerged as a versatile biosensing platform in the recent decade. In the present work, we developed a new immunosensing strategy based on the nanochannels of NAA and the ion pair interaction mediated by electrochemistry of C60. The NAA served as the matrix for the immobilization of the capture antibodies. The incubation of target antigens resulted in the formation of the immunocomplexes and thus an increase of the steric hindrance of the nanochannels. Therefore, the concentration of the redox probe transported through the nanochannels decreases, which can be detected at the working electrode modified with C60. Herein, we initially found that the cathodic peak ascribed to the reduction of C60 to C60- was obviously enhanced by the presence of the redox probe K3[Fe(CN)6] and which was contributed to the formation of a ternary ion association complex among C60, tetraoctylammonium bromide, and K3[Fe(CN)6]. Therefore, the transportation of K3[Fe(CN)6] though the NAA-based bionanochannels can be detected by a C60 modified electrode with an amplified signal. Choosing human epididymis protein 4 (HE4) as the model target, a linear range of 1.0 ng mL-1 to 100 ng mL-1 can be established between the peak current obtained from the differential pulse voltammetric response of the platform and the concentration of HE4. The detection limit was 0.2 ng mL-1. This study not only provides a new avenue to develop the other nanochannel-based biosensing platform for a variety of other disease biomarkers but also contributes to the electrochemistry of fullerene.
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Affiliation(s)
- Zhe Qiao
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry , Northwest University , Xi'an 710127 , China
| | - Hongfang Zhang
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry , Northwest University , Xi'an 710127 , China
| | - Yuanzhen Zhou
- School of Chemistry and Chemical Engineering , Xi'an University of Architecture and Technology , Xi'an 710055 , China
| | - Jianbin Zheng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecular Chemistry, College of Chemistry & Materials Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry , Northwest University , Xi'an 710127 , China
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16
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Yang Y, Yu YY, Shi YT, Moradian JM, Yong YC. In Vivo Two-Way Redox Cycling System for Independent Duplexed Electrochemical Signal Amplification. Anal Chem 2019; 91:4939-4942. [DOI: 10.1021/acs.analchem.9b00053] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuan Yang
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, China
| | - Yang-Yang Yu
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, China
- Zhenjiang Key Laboratory for Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Yu-Tong Shi
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, China
| | - Jamile Mohammadi Moradian
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, China
| | - Yang-Chun Yong
- Biofuels Institute, School of the Environment, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu Province, China
- Zhenjiang Key Laboratory for Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
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17
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Wang B, Xu YT, Lv JL, Xue TY, Ren SW, Cao JT, Liu YM, Zhao WW. Ru(NH3)63+/Ru(NH3)62+-Mediated Redox Cycling: Toward Enhanced Triple Signal Amplification for Photoelectrochemical Immunoassay. Anal Chem 2019; 91:3768-3772. [DOI: 10.1021/acs.analchem.8b05129] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bing Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yi-Tong Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Lu Lv
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Tie-Ying Xue
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shu-Wei Ren
- Xinyang Central Hospital, Xinyang 464000, China
| | - Jun-Tao Cao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Wei-Wei Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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18
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Yan K, Ji W, Zhu Y, Chen F, Zhang J. Photofuel cell coupling with redox cycling as a highly sensitive and selective self-powered sensing platform for the detection of tyrosinase activity. Chem Commun (Camb) 2019; 55:12040-12043. [DOI: 10.1039/c9cc05649a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Redox cycling is successfully integrated in a photofuel cell to provide an amplified self-powered sensing signal for the specific detection of tyrosinase activity.
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Affiliation(s)
- Kai Yan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Weihao Ji
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Yuhan Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Fang Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Jingdong Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education)
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
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19
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Tang D, Ren J, Lu M. Multiplexed electrochemical immunoassay for two immunoglobulin proteins based on Cd and Cu nanocrystals. Analyst 2018; 142:4794-4800. [PMID: 29159345 DOI: 10.1039/c7an01459g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Herein, a simple and feasible electrochemical immunosensing method for simultaneous voltammetric detection of two immunoglobulin proteins, human IgG (HIgG) and rabbit IgG (RIgG), was developed using two distinguishable signal-generation tags on the same electrode. The immunosensor was prepared by immobilizing two Fab antibody fragments on a gold electrode. After this, Cu and Cd nanocrystals, as nanotags, were synthesized and functionalized with identical detection antibodies. Transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the Cu and Cd nanocrystals. The covalently modified electrode with the Fab antibody fragments through the Au-thiolate bond (to dispel the non-specific adsorption) was investigated via scanning electron microscopy (SEM). After the sandwiched immunoreaction, the antibody-modified nanocrystals were captured on the immunosensor, which could be interrogated in pH 3.5 HCl using square-wave anodic stripping voltammetry. Experimental results also indicated that the multiplexed immunoassay enabled the simultaneous detection of HIgG and RIgG in a single run with the similar linear range from 0.01 to 10 ng mL-1, and the limits of detection (LODs) towards two analytes could be as low as 3.4 pg mL-1 (at 3σ). Acceptable assay results on precision, reproducibility, specificity, and method accuracy were also acquired. Importantly, the newly designed strategy avoided cross-talk and enzymatic introduction as compared to conventional electrochemical immunoassays, thus exhibiting a promising potential in clinical applications.
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Affiliation(s)
- Dianping Tang
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing 402160, PR China.
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20
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Bhattacharjee R, Moriam S, Nguyen NT, Shiddiky MJA. A bisulfite treatment and PCR-free global DNA methylation detection method using electrochemical enzymatic signal engagement. Biosens Bioelectron 2018; 126:102-107. [PMID: 30396016 DOI: 10.1016/j.bios.2018.10.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/05/2018] [Accepted: 10/10/2018] [Indexed: 02/09/2023]
Abstract
In this paper we report on a bisulfite treatment and PCR amplification-free method for sensitive and selective quantifying of global DNA methylation. Our method utilizes a three-step strategy that involves (i) initial isolation and denaturation of global DNA using the standard isolation protocol and direct adsorption onto a bare gold electrode via gold-DNA affinity interaction, (ii) selective interrogation of methylation sites in adsorbed DNA via methylation-specific 5mC antibody, and (iii) subsequent signal enhancement using an electrochemical-enzymatic redox cycling reaction. In the redox cycling reaction, glucose oxidase (GOx) is used as an enzyme label, glucose as a substrate and ruthenium complex as a redox mediator. We initially investigated the enzymatic properties of GOx by varying glucose and ruthenium concentration to delineate the redox cyclic mechanism of our assay. Because of the fast electron transfer by ruthenium (Ru) complex and intrinsic signal amplification from GOx label, this method could detect as low as 5% methylation level in 50 ng of total DNA input. Moreover, the use of methylation-specific 5mC antibody conjugated GOx makes this assay relatively highly selective for DNA methylation analysis. The data obtained from the electrochemical response for different levels of methylation showed excellent interassay reproducibility of RSD (relative standard deviation) < 5% for n = 3. We believe that this inexpensive, rapid, and sensitive assay will find high relevance as an alternative method for DNA methylation analysis both in research and clinical platforms.
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Affiliation(s)
- Ripon Bhattacharjee
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Sofia Moriam
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Nam-Trung Nguyen
- Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia
| | - Muhammad J A Shiddiky
- School of Environment and Science, Griffith University, Nathan Campus, Nathan, QLD 4111, Australia; Queensland Micro, and Nanotechnology Centre (QMNC), Griffith University, Nathan Campus, Nathan, QLD 4111, Australia.
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21
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Akanda MR, Ju H. Ferritin-Triggered Redox Cycling for Highly Sensitive Electrochemical Immunosensing of Protein. Anal Chem 2018; 90:8028-8034. [DOI: 10.1021/acs.analchem.8b00933] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Md. Rajibul Akanda
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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22
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Yan K, Liu Y, Guan Y, Bhokisham N, Tsao CY, Kim E, Shi XW, Wang Q, Bentley WE, Payne GF. Catechol-chitosan redox capacitor for added amplification in electrochemical immunoanalysis. Colloids Surf B Biointerfaces 2018; 169:470-477. [PMID: 29852436 DOI: 10.1016/j.colsurfb.2018.05.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/20/2018] [Accepted: 05/21/2018] [Indexed: 02/08/2023]
Abstract
Antibodies are common recognition elements for molecular detection but often the signals generated by their stoichiometric binding must be amplified to enhance sensitivity. Here, we report that an electrode coated with a catechol-chitosan redox capacitor can amplify the electrochemical signal generated from an alkaline phosphatase (AP) linked immunoassay. Specifically, the AP product p-aminophenol (PAP) undergoes redox-cycling in the redox capacitor to generate amplified oxidation currents. We estimate an 8-fold amplification associated with this redox-cycling in the capacitor (compared to detection by a bare electrode). Importantly, this capacitor-based amplification is generic and can be coupled to existing amplification approaches based on enzyme-linked catalysis or magnetic nanoparticle-based collection/concentration. Thus, the capacitor should enhance sensitivities in conventional immunoassays and also provide chemical to electrical signal transduction for emerging applications in molecular communication.
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Affiliation(s)
- Kun Yan
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Yi Liu
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Yongguang Guan
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Narendranath Bhokisham
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Chen-Yu Tsao
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Eunkyoung Kim
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Xiao-Wen Shi
- School of Resource and Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
| | - Qin Wang
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - William E Bentley
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Gregory F Payne
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.
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23
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Sun J, Zhao J, Bao X, Wang Q, Yang X. Alkaline Phosphatase Assay Based on the Chromogenic Interaction of Diethanolamine with 4-Aminophenol. Anal Chem 2018; 90:6339-6345. [DOI: 10.1021/acs.analchem.8b01371] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jian Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Jiahui Zhao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xingfu Bao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Qifeng Wang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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24
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Akanda MR, Ju H. An Integrated Redox Cycling for Electrochemical Enzymatic Signal Enhancement. Anal Chem 2017; 89:13480-13486. [PMID: 29164851 DOI: 10.1021/acs.analchem.7b03802] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Highly sensitive analytical methods for the detection of proteins are still an urgent demand in early medical diagnosis and the discovery of biomarkers with ultralow abundance. Here an integrated electrochemical-chemical-enzymatic redox cycling is designed for significant enhancement of electrochemical enzymatic signal in biorecognition. This strategy efficiently utilizes the high specificity of the outersphere to innersphere redox reaction to mediate the enzymatic redox cycling with the nonenzymatic redox cycling. The oxygenation activity of tyrosinase as a label of the biorecognition event ensures low background and generates outersphere-reaction-philic/innersphere-reaction-philic redox couples, which leads to 13 300× amplification of electrochemical signal. The mediation of nonenzymatic redox cycling in the integrated system produces a 14-fold improved ratio of signal to background. The practicality of the proposed approach with clinical samples demonstrates its potential in clinical diagnostic and therapeutic monitoring. This work opens a new avenue to design novel signal amplification strategies for ultrasensitive bioanalysis.
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Affiliation(s)
- Md Rajibul Akanda
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210023, P. R. China
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25
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Dutta G, Lillehoj PB. An ultrasensitive enzyme-free electrochemical immunosensor based on redox cycling amplification using methylene blue. Analyst 2017; 142:3492-3499. [PMID: 28831485 PMCID: PMC5600201 DOI: 10.1039/c7an00789b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report a new enzyme-free electrochemical sensor for ultrasensitive measurements of protein biomarkers in plasma and whole blood samples based on a unique electrochemical-chemical-chemical (ECC) redox cycling signal amplification scheme. This scheme uses methylene blue (MB) as a redox indicator which undergoes an endergonic reaction with Ru(NH3)63+ and a highly exergonic reaction with tris(2-carboxyethyl)phosphine (TCEP). This approach offers improved detection sensitivity and sensor stability compared with enzyme-based ECC redox cycling techniques, while involving a simpler sensor modification process and detection protocol. This redox cycling scheme was combined with a robust immunosandwich assay for quantitative measurements of protein biomarkers. For proof of principle, Plasmodium falciparum histidine-rich protein 2 (PfHRP2) was measured in human plasma and whole blood samples, which could be detected down to 10 fg mL-1 and 18 fg mL-1, respectively. Furthermore, this immunosensor exhibits high selectivity, excellent reproducibility and good stability for up to 2 weeks, making it a promising platform for point-of-care testing, especially for detecting extremely low biomarker concentrations in raw biofluids.
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Affiliation(s)
- Gorachand Dutta
- Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824, USA.
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26
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Seo J, Ha H, Park S, Haque AMJ, Kim S, Joo JM, Yang H. Immunosensor Employing Stable, Solid 1-Amino-2-naphthyl Phosphate and Ammonia-Borane toward Ultrasensitive and Simple Point-of-Care Testing. ACS Sens 2017; 2:1240-1246. [PMID: 28806067 DOI: 10.1021/acssensors.7b00407] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biosensors for ultrasensitive point-of-care testing require dried reagents with long-term stability and a high signal-to-background ratio. Although ortho-substituted diaromatic dihydroxy and aminohydroxy compounds undergo fast redox reactions, they are not used as electrochemical signaling species because they are readily oxidized and polymerized by dissolved oxygen. In this report, stable, solid 1-amino-2-naphthyl phosphate (1A2N-P) and ammonia-borane (H3N-BH3) are respectively employed as a substrate for alkaline phosphatase (ALP) and a reductant for electrochemical-chemical (EC) redox cycling. ALP converts 1A2N-P to 1-amino-2-naphthol (1A2N), which is then employed in EC redox cycling using H3N-BH3. The oxidation and polymerization of 1A2N by dissolved oxygen is significantly prevented in the presence of H3N-BH3. The electrochemical measurement is performed without modification of indium-tin oxide (ITO) electrodes with electrocatalytic materials. For comparison, nine aromatic dihydroxy and aminohydroxy compounds, including 1A2N, are evaluated to achieve fast EC redox cycling, and four strong reductants, including H3N-BH3, are evaluated to achieve a low background level. The combination of 1A2N and H3N-BH3 allows the achievement of a very high signal-to-background ratio. When the newly developed combination is applied to the detection of creatine kinase-MB (CK-MB), the detection limit for CK-MB is ∼80 fg/mL, indicating that the combination allows ultrasensitive detection. The concentrations of CK-MB in clinical serum samples, determined using the developed system, are in good agreement with the concentrations obtained using a commercial instrument. Thus, the use of stable, solid 1A2N-P and H3N-BH3 along with bare ITO electrodes is highly promising for ultrasensitive and simple point-of-care testing.
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Affiliation(s)
- Jeongwook Seo
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Hyeri Ha
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Seonhwa Park
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Al-Monsur Jiaul Haque
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Sinyoung Kim
- Department
of Laboratory Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jung Min Joo
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Haesik Yang
- Department
of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
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27
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Zhang S, Li R, Liu X, Yang L, Lu Q, Liu M, Li H, Zhang Y, Yao S. A novel multiple signal amplifying immunosensor based on the strategy of in situ-produced electroactive substance by ALP and carbon-based Ag-Au bimetallic as the catalyst and signal enhancer. Biosens Bioelectron 2017; 92:457-464. [DOI: 10.1016/j.bios.2016.10.080] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/28/2016] [Accepted: 10/25/2016] [Indexed: 12/25/2022]
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28
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Fang CS, Kim KS, Yu B, Jon S, Kim MS, Yang H. Ultrasensitive Electrochemical Detection of miRNA-21 Using a Zinc Finger Protein Specific to DNA-RNA Hybrids. Anal Chem 2017; 89:2024-2031. [PMID: 28208259 DOI: 10.1021/acs.analchem.6b04609] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Both high sensitivity and high specificity are crucial for detection of miRNAs that have emerged as important clinical biomarkers. Just Another Zinc finger proteins (JAZ, ZNF346) bind preferably (but nonsequence-specifically) to DNA-RNA hybrids over single-stranded RNAs, single-stranded DNAs, and double-stranded DNAs. We present an ultrasensitive and highly specific electrochemical method for miRNA-21 detection based on the selective binding of JAZ to the DNA-RNA hybrid formed between a DNA capture probe and a target miRNA-21. This enables us to use chemically stable DNA as a capture probe instead of RNA as well as to apply a standard sandwich-type assay format to miRNA detection. High signal amplification is obtained by (i) enzymatic amplification by alkaline phosphatase (ALP) coupled with (ii) electrochemical-chemical-chemical (ECC) redox cycling involving an ALP product (hydroquinone). Low nonspecific adsorption of ALP-conjugated JAZ is obtained using a polymeric self-assembled-monolayer-modified and casein-treated indium-tin oxide electrode. The detection method can discriminate between target miRNA-21 and nontarget nucleic acids (DNA-DNA hybrid, single-stranded DNA, miRNA-125b, miRNA-155, single-base mismatched miRNA, and three-base mismatched miRNA). The detection limits for miRNA-21 in buffer and 10-fold diluted serum are approximately 2 and 30 fM, respectively, indicating that the detection method is ultrasensitive. This detection method can be readily extended to multiplex detection of miRNAs with only one ALP-conjugated JAZ probe due to its nonsequence-specific binding character. We also believe that the method could offer a promising solution for point-of-care testing of miRNAs in body fluids.
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Affiliation(s)
- Chiew San Fang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 46241, Korea
| | - Kwang-Sun Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 46241, Korea
| | - Byeongjun Yu
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Korea
| | - Sangyong Jon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Korea
| | - Moon-Soo Kim
- Department of Chemistry, Western Kentucky University , Bowling Green, Kentucky 42101, United States
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 46241, Korea
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29
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Akanda MR, Ju H. A Tyrosinase-Responsive Nonenzymatic Redox Cycling for Amplified Electrochemical Immunosensing of Protein. Anal Chem 2016; 88:9856-9861. [DOI: 10.1021/acs.analchem.6b03056] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Md. Rajibul Akanda
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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30
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Fang CS, Oh KH, Park JK, Yang H. Rapid and Sensitive Electrochemical Detection of Carbaryl Based on Enzyme Inhibition and Thiocholine Oxidation Mediated by a Ruthenium(III) Complex. ELECTROANAL 2016. [DOI: 10.1002/elan.201600308] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chiew San Fang
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Korea
| | - Kyung Hwan Oh
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Korea
| | - Jin Kyoon Park
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Korea
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31
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Kokkinos C, Economou A, Prodromidis MI. Electrochemical immunosensors: Critical survey of different architectures and transduction strategies. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.11.020] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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32
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Fang CS, Oh KH, Oh A, Lee K, Park S, Kim S, Park JK, Yang H. An ultrasensitive and incubation-free electrochemical immunosensor using a gold-nanocatalyst label mediating outer-sphere-reaction-philic and inner-sphere-reaction-philic species. Chem Commun (Camb) 2016; 52:5884-7. [PMID: 27052458 DOI: 10.1039/c6cc00353b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This communication reports a new nanocatalytic scheme based on the facts that the redox reaction between a highly outer-sphere-reaction-philic (OSR-philic) species and a highly inner-sphere-reaction-philic (ISR-philic) species is slow and that an OSR- and ISR-philic Au-nanocatalyst label can mediate the two different types of redox species. This scheme allows highly sensitive and incubation free detection of creatine kinase-MB.
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Affiliation(s)
- Chiew San Fang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea.
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33
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Electrochemical immunosensor for carcinoembryonic antigen based on signal amplification strategy of graphene and Fe3O4/Au NPs. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2015.12.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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34
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Park S, Shin YM, Seo J, Song JJ, Yang H. A highly sensitive and simply operated protease sensor toward point-of-care testing. Analyst 2016; 141:2481-6. [DOI: 10.1039/c6an00251j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The sensor is based on (i) low nonspecific adsorption and (ii) electrochemical–chemical redox cycling.
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Affiliation(s)
- Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 46241
- Korea
| | - Yu Mi Shin
- Department of Biological Sciences
- KAIST Institute for the BioCentury
- Cancer Metastasis Control Center
- KAIST
- Daejeon 34141
| | - Jeongwook Seo
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 46241
- Korea
| | - Ji-Joon Song
- Department of Biological Sciences
- KAIST Institute for the BioCentury
- Cancer Metastasis Control Center
- KAIST
- Daejeon 34141
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 46241
- Korea
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35
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Park S, Shin YM, Song JJ, Yang H. Facile electrochemical detection of botulinum neurotoxin type E using a two-step proteolytic cleavage. Biosens Bioelectron 2015; 72:211-7. [DOI: 10.1016/j.bios.2015.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/25/2015] [Accepted: 05/06/2015] [Indexed: 12/25/2022]
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36
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Electrochemical detection of amyloid-β oligomer with the signal amplification of alkaline phosphatase plus electrochemical–chemical–chemical redox cycling. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.06.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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37
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Jeong J, Das J, Choi M, Jo J, Aziz MA, Yang H. Arsenic(III) detection using electrochemical-chemical-chemical redox cycling at bare indium-tin oxide electrodes. Analyst 2015; 139:5813-7. [PMID: 25209319 DOI: 10.1039/c4an01174k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Sensitive As(III) detection in ground water is of great importance for evaluating the quality of drinking water. We report a sensitive electrochemical method for As(III) detection based on electrochemical-chemical-chemical (ECC) redox cycling involving Ru(IV) [an oxidized species of Ru(III)(NH3)5NH2(2+)], As(III), and tris(3-carboxyethyl)phosphine (TCEP). Electrochemical oxidation of Ru(III)(NH3)5NH2(2+) formed from Ru(III)(NH3)6(3+) generates Ru(IV), which quickly oxidizes As(III). This electro-mediated oxidation of As(III) produces As(V), which is reduced back to As(III) by TCEP. Electrochemically generated Ru(IV) then reoxidizes As(III), allowing ECC redox cycling to occur at a high rate on bare indium-tin oxide (ITO) electrodes without modifying the surfaces with electrocatalytic materials. Because most interfering metal ions precipitate in a carbonate buffer, water samples are mixed with carbonate buffers prior to electrochemical measurements, rendering the effects of Cu(+), Cu(2+), Fe(2+), Fe(3+), and Pb(2+) insignificant. The detection limit calculated by ECC redox cycling using a chronocoulogram is 1.2 μM, much lower than that obtained using only the electro-mediated oxidation of As(III) (90 μM).
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Affiliation(s)
- Jinkyo Jeong
- Department of Chemistry and Chemistry Institute of Functional Materials, Pusan National University, Busan 609-735, Korea.
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38
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Yang ZH, Zhuo Y, Yuan R, Chai YQ. Amplified thrombin aptasensor based on alkaline phosphatase and hemin/G-quadruplex-catalyzed oxidation of 1-naphthol. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10308-10315. [PMID: 25907268 DOI: 10.1021/acsami.5b00988] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An alkaline phosphatase (ALP)-based biosensor can in situ generate an electroactive product by enzymatic hydrolysis of inactive substrates. To obtain a higher signal-to-background ratio, a chemical redox cycling signal-amplified strategy based on the addition of a strong reducing agent has often be applied in the construction of ALP-based biosensors. However, the strong reducing agent not only affects the activity of ALP but also readily reacts with dissolved oxygen, leading to inaccurate results. In this work, a new signal-amplified strategy for a thrombin (TB) aptasensor based on the catalytic oxidation of ALP-generated products, 1-naphthol (NP), using hemin/G-quadruplex DNAzymes was reported. We implemented gold-nanoparticle-decorated zinc oxide nanoflowers (Au-ZnO) as the matrix for immobilizing ALP and TB aptamer (TBA) and then labeled it with hemin to form hemin/G-quadruplex/ALP/Au-ZnO bioconjugates (TBA II bioconjugates). Through a "sandwich" reaction, TBA II bioconjugates were captured on the electrode surface. The amplified signal was carried out in two steps: (i) an ALP-catalyzed inactive substrate, 1-naphthyl phosphate (NPP), in situ produces NP on the surface of the electrode; (ii) on the one hand, NP as a new reactant could be directly electrooxidized and generated an electrochemical signal, but, on the other hand, NP could be oxidized by hemin/G-quadruplex in the presence of H2O2, resulting in amplification of the electrochemical signal. The proposed TB aptasensor achieved a linear range of 1 pM to 30 nM with a detection limit of 0.37 pM (defined as S/N = 3).
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Affiliation(s)
- Zhe-Han Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry and Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ying Zhuo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry and Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry and Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ya-Qin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry and Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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39
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Akanda MR, Joung HA, Tamilavan V, Park S, Kim S, Hyun MH, Kim MG, Yang H. An interference-free and rapid electrochemical lateral-flow immunoassay for one-step ultrasensitive detection with serum. Analyst 2015; 139:1420-5. [PMID: 24482801 DOI: 10.1039/c3an02328a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Point-of-care testing (POCT) of biomarkers in clinical samples is of great importance for rapid and cost-effective diagnosis. However, it is extremely challenging to develop an electrochemical POCT technique retaining both ultrasensitivity and simplicity. We report an interference-free electrochemical lateral-flow immunoassay that enables one-step ultrasensitive detection with serum. The electrochemical-chemical-chemical (ECC) redox cycling combined with an enzymatic reaction of an enzyme label is used to obtain high signal amplification. The ECC redox cycling involving Ru(NH3)6(3+), enzyme product, and tris(3-carboxyethyl)phosphine (TCEP) depends on pH, because the formal potentials of an enzyme product and TCEP increase with decreasing pH although that of Ru(NH3)6(3+) is pH-independent. With consideration of the pH dependence of ECC redox cycling, a noble combination of enzyme label, substrate, and product [β-galactosidase, 4-amino-1-naphthyl β-D-galactopyranoside, and 4-amino-1-naphthol, respectively] is introduced to ensure fast and selective ECC redox cycling of the enzyme product along with a low background level. The selective ECC redox cycling at a low applied potential (0.05 V vs. Ag/AgCl) minimizes the interference effect of electroactive species (L-ascorbic acid, acetaminophen, and uric acid) in serum. A detection limit of 0.1 pg mL(-1) for troponin I is obtained only 11 min after serum dropping without the use of an additional solution. Moreover, the lateral-flow immunoassay is applicable to the analysis of real clinical samples.
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Affiliation(s)
- Md Rajibul Akanda
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Korea.
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40
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Jiaul Haque AM, Kim J, Dutta G, Kim S, Yang H. Redox cycling-amplified enzymatic Ag deposition and its application in the highly sensitive detection of creatine kinase-MB. Chem Commun (Camb) 2015; 51:14493-6. [DOI: 10.1039/c5cc06117b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This communication reports a novel enzymatic Ag-deposition scheme combined with chemical–chemical redox cycling by reduced β-nicotinamide adenine dinucleotide.
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Affiliation(s)
- Al-Monsur Jiaul Haque
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Jihye Kim
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Gorachand Dutta
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine
- Yonsei University College of Medicine
- Seoul 135-720
- Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
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41
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Park S, Kim J, Ock H, Dutta G, Seo J, Shin EC, Yang H. Sensitive electrochemical detection of vaccinia virus in a solution containing a high concentration of l-ascorbic acid. Analyst 2015; 140:5481-7. [DOI: 10.1039/c5an01086a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A new redox cycling scheme allows sensitive detection of vaccinia virus in a solution containing a high concentration of l-ascorbic acid.
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Affiliation(s)
- Seonhwa Park
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Jihye Kim
- Graduate School of Medical Science & Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Korea
| | - Hwiseok Ock
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Gorachand Dutta
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Jeongwook Seo
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Eui-Cheol Shin
- Graduate School of Medical Science & Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials
- Pusan National University
- Busan 609-735
- Korea
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42
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Noh S, Yang H. Sensitive Phenol Detection Using Tyrosinase-Based Phenol Oxidation Combined with Redox Cycling of Catechol. ELECTROANAL 2014. [DOI: 10.1002/elan.201400383] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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43
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Xia N, Liu L, Wu R, Liu H, Li SJ, Hao Y. Ascorbic acid-triggered electrochemical–chemical–chemical redox cycling for design of enzyme-amplified electrochemical biosensors on self-assembled monolayer-covered gold electrodes. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.08.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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44
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Liu L, Gao Y, Liu H, Du J, Xia N. Electrochemical-chemical-chemical redox cycling triggered by thiocholine and hydroquinone with ferrocenecarboxylic acid as the redox mediator. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.07.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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Park S, Yang H. Sensitive and selective trypsin detection using redox cycling in the presence ofl-ascorbic acid. Analyst 2014; 139:4051-5. [DOI: 10.1039/c4an00465e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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46
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Fu Y, Liu K, Sun Q, Lin B, Lu D, Xu Z, Hu C, Fan G, Zhang S, Wang C, Zhang W. A highly sensitive immunosensor for calmodulin assay based on enhanced biocatalyzed precipitation adopting a dual-layered enzyme strategy. Biosens Bioelectron 2014; 56:258-63. [DOI: 10.1016/j.bios.2014.01.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/04/2014] [Accepted: 01/17/2014] [Indexed: 02/06/2023]
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47
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Han D, Kim YR, Kang CM, Chung TD. Electrochemical signal amplification for immunosensor based on 3D interdigitated array electrodes. Anal Chem 2014; 86:5991-8. [PMID: 24842332 DOI: 10.1021/ac501120y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We devised an electrochemical redox cycling based on three-dimensional interdigitated array (3D IDA) electrodes for signal amplification to enhance the sensitivity of chip-based immunosensors. The 3D IDA consists of two closely spaced parallel indium tin oxide (ITO) electrodes that are positioned not only on the bottom but also the ceiling, facing each other along a microfluidic channel. We investigated the signal intensities from various geometric configurations: Open-2D IDA, Closed-2D IDA, and 3D IDA through electrochemical experiments and finite-element simulations. The 3D IDA among the four different systems exhibited the greatest signal amplification resulting from efficient redox cycling of electroactive species confined in the microchannel so that the faradaic current was augmented by a factor of ∼100. We exploited the enhanced sensitivity of the 3D IDA to build up a chronocoulometric immunosensing platform based on the sandwich enzyme-linked immunosorbent assay (ELISA) protocol. The mouse IgGs on the 3D IDA showed much lower detection limits than on the Closed-2D IDA. The detection limit for mouse IgG measured using the 3D IDA was ∼10 fg/mL, while it was ∼100 fg/mL for the Closed-2D IDA. Moreover, the proposed immunosensor system with the 3D IDA successfully worked for clinical analysis as shown by the sensitive detection of cardiac troponin I in human serum down to 100 fg/mL.
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Affiliation(s)
- Donghoon Han
- Department of Chemistry, Seoul National University , Seoul 151-747, Korea
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48
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Pedrero M, Campuzano S, Pingarrón JM. Electrochemical Biosensors for the Determination of Cardiovascular Markers: a Review. ELECTROANAL 2014. [DOI: 10.1002/elan.201300597] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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49
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Liu L, Xia N, Liu H, Kang X, Liu X, Xue C, He X. Highly sensitive and label-free electrochemical detection of microRNAs based on triple signal amplification of multifunctional gold nanoparticles, enzymes and redox-cycling reaction. Biosens Bioelectron 2014; 53:399-405. [DOI: 10.1016/j.bios.2013.10.026] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 10/02/2013] [Accepted: 10/11/2013] [Indexed: 11/17/2022]
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50
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Liu S, Zhang J, Tu W, Bao J, Dai Z. Using ruthenium polypyridyl functionalized ZnO mesocrystals and gold nanoparticle dotted graphene composite for biological recognition and electrochemiluminescence biosensing. NANOSCALE 2014; 6:2419-2425. [PMID: 24435065 DOI: 10.1039/c3nr05944h] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Using ruthenium polypyridyl functionalized ZnO mesocrystals as bionanolabels, a universal biological recognition and biosensing platform based on gold nanoparticle (AuNP) dotted reduced graphene oxide (rGO) composite was developed. AuNP-rGO accelerated electron transfer between the detection probe and the electrode, and increased the surface area of the working electrode to load greater amounts of the capture antibodies. The large surface area of ZnO mesocrystals was beneficial for loading a high content ruthenium polypyridyl complex, leading to an enhanced electrochemiluminescence signal. Using α-fetoprotein (AFP) as a model, a simple and sensitive sandwich-type electrochemiluminescence biosensor with tripropylamine (TPrA) as a coreactant for detection of AFP was constructed. The designed biosensor provided a good linear range from 0.04 to 500 ng mL(-1) with a low detection limit of 0.031 ng mL(-1) at a S/N of 3 for AFP determination. The proposed biological recognition and biosensing platform extended the application of ruthenium polypyridyl functionalized ZnO mesocrystals, which provided a new promising prospect.
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Affiliation(s)
- Suli Liu
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China.
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