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Liu C, Zhang Y, Wang P, Fan A. Enhancement effect of 2, 3-dimethyl maleic acid on luminol chemiluminescence reactions and its application in detection of sequence-specific DNA related to hepatitis B virus. Talanta 2022; 250:123724. [PMID: 35839608 DOI: 10.1016/j.talanta.2022.123724] [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: 03/30/2022] [Revised: 07/01/2022] [Accepted: 07/03/2022] [Indexed: 10/17/2022]
Abstract
2, 3-dimethyl maleic acid (DMMA) was found to enhance luminol-H2O2 chemiluminescent (CL) reactions, among which the strongest enhancement effect was observed by using polyethyleneimine-templated gold nanoclusters (PEI-Au NCs) as the catalyst. With the addition of DMMA, the CL signal of the PEI-Au NCs-catalyzed luminol-H2O2 reaction enhanced about 630-fold, and a flash-type CL profile was obtained. Mechanism studies showed that the luminophore was still 3-aminophthalate anions in the excited state (3-APA*), and superoxide radical (O2·-) played an important role during the CL process. Under the optimized experimental conditions, the lowest concentration of PEI-Au NCs can be detected was 0.168 nM which was 82-fold lower than that without an enhancer. Furthermore, the catalytic activity of biotinylated PEI-Au NCs in the DMMA-enhanced luminol system was similar to PEI-Au NCs, providing a good opportunity for the development of CL bioanalysis platforms using PEI-Au NCs as the label. Thus, the DMMA-enhanced luminol-H2O2 system was applied to the CL detection of sequence-specific DNA related to the hepatitis B virus (HBV) using PEI-Au NCs as the label. The CL platform exhibited linearly enhanced CL response with the increasing amount of target DNA ranging from 0.0025 to 0.5 pmol. As low as 0.002 pmol of HBV DNA could be sensitively detected, which was superior to the previously reported methods.
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Affiliation(s)
- Chang Liu
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, PR China.
| | - Yunyu Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Peihua Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Aiping Fan
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, PR China.
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2
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Electrochemical investigation of DNA-metal complex interactions and development of a highly sensitive electrochemical biosensor. Anal Biochem 2022; 652:114738. [PMID: 35597268 DOI: 10.1016/j.ab.2022.114738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/05/2022] [Accepted: 05/14/2022] [Indexed: 01/29/2023]
Abstract
Metal ion-DNA interactions are important in nature as they often change the genetic material's structure and function. In this work, new Tb complex of TbCl3 (tris(8-hydroxyquinoline-5-sulfonic acid) terbium) (Tb(QS)3) was used as an electrochemical indicator for investigation of DNA-metal interaction and then a new DNA biosensor was designed using this complex. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to study the interaction of Tb(QS)3 with double-stranded DNA (ds-DNA). It was found that Tb(QS)3 presented an excellent electrochemical activity on carbon paste electrode (CPE) and could intercalate into the double helix of double-stranded DNA. The interaction mechanism was elucidated in DNA solution and DNA modified carbon paste electrode by using differential pulse voltammetry and cyclic voltammetry. The binding ratio between this complex and ds-DNA was calculated to be 1:1. The extent of hybridization was evaluated on the basis of the difference between signals of Tb(QS)3 with probe DNA before and after hybridization with complementary DNA. With this approach, target DNA could be detected in the range from 0.03 to 0.185 μM with detection limit of 0.021 μM. The interaction mode between Tb(QS)3 and DNA was found to be mainly intercalative interaction.
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3
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Pilevar M, Kim KT, Lee WH. Recent advances in biosensors for detecting viruses in water and wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124656. [PMID: 33308919 DOI: 10.1016/j.jhazmat.2020.124656] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/12/2020] [Accepted: 11/20/2020] [Indexed: 05/09/2023]
Abstract
As there is a considerable number of virus particles in wastewater which cause numerous infectious diseases, it is necessary to eliminate viruses from domestic wastewater before it is released in the environment. In addition, on-site detection of viruses in wastewater can provide information on possible virus exposures in the community of a given wastewater catchment. For this purpose, the pre-detection of different strains of viruses in wastewaters is an essential environmental step. Epidemiological studies illustrate that viruses are the most challenging pathogens to be detected in water samples because of their nano sizes, discrete distribution, and low infective doses. Over the past decades, several methods have been applied for the detection of waterborne viruses which include polymerase chain reaction-based methods (PCR), enzyme-linked immunosorbent assay (ELISA), and nucleic acid sequence-based amplification (NASBA). Although they have shown acceptable performance in virus measurements, their drawbacks such as complicated and time-consuming procedures, low sensitivity, and high analytical cost call for alternatives. Although biosensors are still in an early stage for practical applications, they have shown great potential to become an alternative means for virus detection in water and wastewater. This comprehensive review addresses the different types of viruses found in water and the recent development of biosensors for detecting waterborne viruses.
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Affiliation(s)
- Mohsen Pilevar
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL 32816, USA
| | - Keug Tae Kim
- Department of Environmental & Energy Engineering, The University of Suwon, 17 Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, South Korea
| | - Woo Hyoung Lee
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL 32816, USA.
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4
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Erdem A, Eksin E, Kadikoylu G, Yildiz E. Voltammetric detection of miRNA hybridization based on electroactive indicator-cobalt phenanthroline. Int J Biol Macromol 2020; 158:819-825. [PMID: 32339576 DOI: 10.1016/j.ijbiomac.2020.04.168] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 12/28/2022]
Abstract
The indicator-based nucleic acid detection protocol is one of the major approaches to monitor the sequence-selective nucleic acid hybridization-mediated recognition events in biochemical analysis. The metal complex, cobalt phenanthroline, [Co(phen)33+], which is one of the electroactive indicators, interacts more with double stranded nucleic acids via intercalation. Thus, this interaction permits an increase at the electrochemical signal of [Co(phen)33+]. In our study, the interaction of metal complex, [Co(phen)33+] with nucleic acids was examined using pencil graphite electrodes (PGEs) in combination with differential pulse voltammetry (DPV) technique. The voltammetric detection of miRNA-34a was investigated based on the changes at the electrochemical signal of [Co(phen)33+] under optimized experimental conditions; such as accumulation potentialof metal complex and DNA probe concentration, hybridization time, target miRNA concentration. Furthermore, the selectivity of electrochemical miRNA-34a biosensor was studied in contrast to different miRNAs. The applicability of indicator-based biosensor specific to miRNA-34a was also presented by using total RNA samples.
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Affiliation(s)
- Arzum Erdem
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, 35100, Bornova, Izmir, Turkey; Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Ege University, 35100, Bornova, Izmir, Turkey.
| | - Ece Eksin
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, 35100, Bornova, Izmir, Turkey
| | - Gulce Kadikoylu
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, 35100, Bornova, Izmir, Turkey; Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Ege University, 35100, Bornova, Izmir, Turkey
| | - Esma Yildiz
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, 35100, Bornova, Izmir, Turkey; Biomedical Technologies Department, Graduate School of Natural and Applied Sciences, Ege University, 35100, Bornova, Izmir, Turkey
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5
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Hassanpour S, Baradaran B, de la Guardia M, Baghbanzadeh A, Mosafer J, Hejazi M, Mokhtarzadeh A, Hasanzadeh M. Diagnosis of hepatitis via nanomaterial-based electrochemical, optical or piezoelectrical biosensors: a review on recent advancements. Mikrochim Acta 2018; 185:568. [DOI: 10.1007/s00604-018-3088-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/09/2018] [Indexed: 12/21/2022]
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6
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Ikhuoria E, Omorogbe S, Sone B, Maaza M. Bioinspired shape controlled antiferromagnetic Co3O4 with prism like-anchored octahedron morphology: A facile green synthesis using Manihot esculenta Crantz extract. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.stmat.2018.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Huang Y, Xu J, Liu J, Wang X, Chen B. Disease-Related Detection with Electrochemical Biosensors: A Review. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2375. [PMID: 29039742 PMCID: PMC5676665 DOI: 10.3390/s17102375] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/10/2017] [Accepted: 10/14/2017] [Indexed: 01/05/2023]
Abstract
Rapid diagnosis of diseases at their initial stage is critical for effective clinical outcomes and promotes general public health. Classical in vitro diagnostics require centralized laboratories, tedious work and large, expensive devices. In recent years, numerous electrochemical biosensors have been developed and proposed for detection of various diseases based on specific biomarkers taking advantage of their features, including sensitivity, selectivity, low cost and rapid response. This article reviews research trends in disease-related detection with electrochemical biosensors. Focus has been placed on the immobilization mechanism of electrochemical biosensors, and the techniques and materials used for the fabrication of biosensors are introduced in details. Various biomolecules used for different diseases have been listed. Besides, the advances and challenges of using electrochemical biosensors for disease-related applications are discussed.
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Affiliation(s)
- Ying Huang
- Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China.
| | - Jin Xu
- Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China.
| | - Junjie Liu
- Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China.
| | - Xiangyang Wang
- CET-College of Engineering and Technology, Southwest University, Chongqing 400715, China.
| | - Bin Chen
- Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China.
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University) Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
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8
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Ahangar LE, Mehrgardi MA. Amplified detection of hepatitis B virus using an electrochemical DNA biosensor on a nanoporous gold platform. Bioelectrochemistry 2017. [DOI: 10.1016/j.bioelechem.2017.06.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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9
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Analysis of the evolution of the detection limits of electrochemical nucleic acid biosensors II. Anal Bioanal Chem 2017; 409:4335-4352. [DOI: 10.1007/s00216-017-0377-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/11/2017] [Accepted: 04/21/2017] [Indexed: 01/07/2023]
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10
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Chekin F, Vahdat SM, Asadi MJ. Green synthesis and characterization of cobalt oxide nanoparticles and its electrocatalytic behavior. RUSS J APPL CHEM+ 2016. [DOI: 10.1134/s1070427216050219] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Zhu H, Lu F, Wu XC, Zhu JJ. An upconversion fluorescent resonant energy transfer biosensor for hepatitis B virus (HBV) DNA hybridization detection. Analyst 2016; 140:7622-8. [PMID: 26421323 DOI: 10.1039/c5an01634g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel fluorescent resonant energy transfer (FRET) biosensor was fabricated for the detection of hepatitis B virus (HBV) DNA using poly(ethylenimine) (PEI) modified upconversion nanoparticles (NH2-UCNPs) as energy donor and gold nanoparticles (Au NPs) as acceptor. The PEI modified upconversion nanoparticles were prepared directly with a simple one-pot hydrothermal method, which provides high quality amino-group functionalized UCNPs with uniform morphology and strong upconversion luminescence. Two single-stranded DNA strands, which were partially complementary to each other, were then conjugated with NH2-UCNPs and Au NPs. When DNA conjugated NH2-UCNPs and Au NPs are mixed together, the hybridization between complementary DNA sequences on UCNPs and Au NPs will lead to the quenching of the upconversion luminescence due to the FRET process. Meanwhile, upon the addition of target DNA, Au NPs will leave the surface of the UCNPs and the upconversion luminescence can be restored because of the formation of the more stable double-stranded DNA on the UCNPs. The sensor we fabricated here for target DNA detection shows good sensitivity and high selectivity, which has the potential for clinical applications in the analysis of HBV and other DNA sequences.
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Affiliation(s)
- Hao Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
| | - Feng Lu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
| | - Xing-Cai Wu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, Collaborative Innovation Center of Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
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12
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Zor E, Oztekin Y, Ramanaviciene A, Anusevicius Z, Voronovic J, Bingol H, Barauskas-Memenas D, Labanauskas L, Ramanavicius A. Evaluation of 1,10-phenanthroline-5,6-dione as redox mediator for glucose oxidase. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934816010044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Liu YP, Yao CY. Rapid and quantitative detection of hepatitis B virus. World J Gastroenterol 2015; 21:11954-11963. [PMID: 26576084 PMCID: PMC4641117 DOI: 10.3748/wjg.v21.i42.11954] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/29/2015] [Accepted: 09/14/2015] [Indexed: 02/06/2023] Open
Abstract
Despite availability of a universal vaccine, hepatitis B virus (HBV) infection has a huge impact on public health worldwide. Accurate and timely diagnosis of HBV infection is needed. Rapid developments have been made in the diagnostic and monitoring methods for HBV infection, including serological and molecular assays. In clinical practice, qualitative hepatitis B surface antigen (HBsAg) testing has long served as a diagnostic marker for individuals infected with HBV. More recently, HBsAg level has been used to predict treatment outcome when determined early during treatment or at baseline. However, identification of HBV DNA positive cases that do not have detectable HBsAg has encouraged the application of molecular tests. Hence, combination of quantitative detection of HBV DNA and HBsAg can be used to discriminate patients during the course of HBV infection and to monitor therapy. This article reviews the most commonly used quantitative methods for HBsAg and HBV DNA.
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14
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Ultrasensitive DNA sensor based on gold nanoparticles/reduced graphene oxide/glassy carbon electrode. Anal Biochem 2015; 484:24-30. [DOI: 10.1016/j.ab.2015.05.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 05/04/2015] [Accepted: 05/11/2015] [Indexed: 11/18/2022]
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15
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Benvidi A, Rajabzadeh N, Molaye Zahedi H, Mazloum-Ardakani M, Heidari MM, Hosseinzadeh L. Simple and label-free detection of DNA hybridization on a modified graphene nanosheets electrode. Talanta 2015; 137:80-6. [DOI: 10.1016/j.talanta.2015.01.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 01/23/2015] [Accepted: 01/24/2015] [Indexed: 10/24/2022]
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16
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Lee JH, Oh BK, Choi JW. Development of a HIV-1 Virus Detection System Based on Nanotechnology. SENSORS 2015; 15:9915-27. [PMID: 25923937 PMCID: PMC4481885 DOI: 10.3390/s150509915] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/08/2015] [Accepted: 04/20/2015] [Indexed: 12/27/2022]
Abstract
Development of a sensitive and selective detection system for pathogenic viral agents is essential for medical healthcare from diagnostics to therapeutics. However, conventional detection systems are time consuming, resource-intensive and tedious to perform. Hence, the demand for sensitive and selective detection system for virus are highly increasing. To attain this aim, different aspects and techniques have been applied to develop virus sensor with improved sensitivity and selectivity. Here, among those aspects and techniques, this article reviews HIV virus particle detection systems incorporated with nanotechnology to enhance the sensitivity. This review mainly focused on four different detection system including vertically configured electrical detection based on scanning tunneling microscopy (STM), electrochemical detection based on direct electron transfer in virus, optical detection system based on localized surface plasmon resonance (LSPR) and surface enhanced Raman spectroscopy (SERS) using plasmonic nanoparticle.
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Affiliation(s)
- Jin-Ho Lee
- Department of Chemical & Biomolecular Engineering, Sogang University, #1 Shinsu-Dong, Mapo-Gu, Seoul 121-742, Korea.
| | - Byung-Keun Oh
- Department of Chemical & Biomolecular Engineering, Sogang University, #1 Shinsu-Dong, Mapo-Gu, Seoul 121-742, Korea.
| | - Jeong-Woo Choi
- Department of Chemical & Biomolecular Engineering, Sogang University, #1 Shinsu-Dong, Mapo-Gu, Seoul 121-742, Korea.
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17
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Detection of short oligonucleotide sequences of hepatitis B virus using electrochemical DNA hybridisation biosensor. CHEMICAL PAPERS 2015. [DOI: 10.2478/s11696-014-0599-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractA novel, sensitive and selective electrochemical hybridisation biosensor was developed for the detection of the hepatitis B virus (HBV) using a manganese(II) complex as electrochemical indicator and a DNA probe-modified carbon paste electrode as the biosensor (DNA/CPE). The results showed that this complex could be accumulated electrochemically the immobilised dsDNA layer rather than in the single-stranded DNA (ssDNA) layer. On the basis of this, the manganese complex was used as an electrochemical hybridisation indicator for the detection of oligonucleotides related to HBV. The hybridisation event was evaluated on the basis of the difference between the reduction signals of the manganese(II) complex with the probe DNA prior to and post hybridisation with a target sequence using a differential pulse mode. Several factors affecting the immobilisation and hybridisation of oligonucleotides as well as the indicator’s accumulation were investigated. Experiments with a noncomplementary and mismatch sequences demonstrated the good selectivity of the biosensor. Using this approach, the HBV target oligonucleotide’s sequence could be quantified over arange from 0.22 ng L
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18
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Shi L, Yu Y, Chen Z, Zhang L, He S, Shi Q, Yang H. A label-free hemin/G-quadruplex DNAzyme biosensor developed on electrochemically modified electrodes for detection of a HBV DNA segment. RSC Adv 2015. [DOI: 10.1039/c4ra09936b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
A label-free biosensor based on Au/G–CMWCNTs-GCE was proposed for the detection of a HBV DNA segment with a low LOD.
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Affiliation(s)
- Lijuan Shi
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Yanyan Yu
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Zuanguang Chen
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Lin Zhang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Sijing He
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Qiujia Shi
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Hongzhi Yang
- The Third Affiliated Hospital
- Sun Yat-sen University
- Guangzhou 510630
- China
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19
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Electrochemical biosensor based on glucose oxidase encapsulated within enzymatically synthesized poly(1,10-phenanthroline-5,6-dione). Colloids Surf B Biointerfaces 2014; 123:685-91. [DOI: 10.1016/j.colsurfb.2014.10.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 06/13/2014] [Accepted: 10/05/2014] [Indexed: 11/18/2022]
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20
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Datta S, Chatterjee S, Veer V. Recent advances in molecular diagnostics of hepatitis B virus. World J Gastroenterol 2014; 20:14615-14625. [PMID: 25356025 PMCID: PMC4209528 DOI: 10.3748/wjg.v20.i40.14615] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/13/2014] [Accepted: 06/05/2014] [Indexed: 02/07/2023] Open
Abstract
Hepatitis B virus (HBV) is one of the important global health problems today. Infection with HBV can lead to a variety of clinical manifestations including severe hepatic complications like liver cirrhosis and hepatocellular carcinoma. Presently, routine HBV screening and diagnosis is primarily based on the immuno-detection of HBV surface antigen (HBsAg). However, identification of HBV DNA positive cases, who do not have detectable HBsAg has greatly encouraged the use of nucleic acid amplification based assays, that are highly sensitive, specific and are to some extent tolerant to sequence variation. In the last few years, the field of HBV molecular diagnostics has evolved rapidly with advancements in the molecular biology tools, such as polymerase chain reaction (PCR) and real-time PCR. Recently, apart of PCR based amplification methods, a number of isothermal amplification assays, such as loop mediated isothermal amplification, transcription mediated amplification, ligase chain reaction, and rolling circle amplification have been utilized for HBV diagnosis. These assays also offer options for real time detection and integration into biosensing devices. In this manuscript, we review the molecular technologies that are presently available for HBV diagnostics, with special emphasis on isothermal amplification based technologies. We have also included the recent trends in the development of biosensors and use of next generation sequencing technologies for HBV.
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21
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Sun L, Frykholm K, Fornander LH, Svedhem S, Westerlund F, Akerman B. Sensing conformational changes in DNA upon ligand binding using QCM-D. Polyamine condensation and Rad51 extension of DNA layers. J Phys Chem B 2014; 118:11895-904. [PMID: 25197950 DOI: 10.1021/jp506733w] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Biosensors, in which binding of ligands is detected through changes in the optical or electrochemical properties of a DNA layer confined to the sensor surface, are important tools for investigating DNA interactions. Here, we investigate if conformational changes induced in surface-attached DNA molecules upon ligand binding can be monitored by the quartz crystal microbalance with dissipation (QCM-D) technique. DNA duplexes containing 59-184 base pairs were formed on QCM-D crystals by stepwise assembly of synthetic oligonucleotides of designed base sequences. The DNA films were exposed to the cationic polyamines spermidine and spermine, known to condense DNA molecules in bulk experiments, or to the recombination protein Rad51, known to extend the DNA helix. The binding and dissociation of the ligands to the DNA films were monitored in real time by measurements of the shifts in resonance frequency (Δf) and in dissipation (ΔD). The QCM-D data were analyzed using a Voigt-based model for the viscoelastic properties of polymer films in order to evaluate how the ligands affect thickness and shear viscosity of the DNA layer. Binding of spermine shrinks all DNA layers and increases their viscosity in a reversible fashion, and so does spermidine, but to a smaller extent, in agreement with its lower positive charge. SPR was used to measure the amount of bound polyamines, and when combined with QCM-D, the data indicate that the layer condensation leads to a small release of water from the highly hydrated DNA films. The binding of Rad51 increases the effective layer thickness of a 59 bp film, more than expected from the know 50% DNA helix extension. The combined results provide guidelines for a QCM-D biosensor based on ligand-induced structural changes in DNA films. The QCM-D approach provides high discrimination between ligands affecting the thickness and the structural properties of the DNA layer differently. The reversibility of the film deformation allows comparative studies of two or more analytes using the same DNA layer as demonstrated here by spermine and spermidine.
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Affiliation(s)
- Lu Sun
- Department of Chemical and Biological Engineering and ‡Department of Applied Physics, Chalmers University of Technology , SE-412 96 Gothenburg, Sweden
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22
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Yao CY, Fu WL. Biosensors for hepatitis B virus detection. World J Gastroenterol 2014; 20:12485-12492. [PMID: 25253948 PMCID: PMC4168081 DOI: 10.3748/wjg.v20.i35.12485] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 03/01/2014] [Accepted: 04/16/2014] [Indexed: 02/06/2023] Open
Abstract
A biosensor is an analytical device used for the detection of analytes, which combines a biological component with a physicochemical detector. Recently, an increasing number of biosensors have been used in clinical research, for example, the blood glucose biosensor. This review focuses on the current state of biosensor research with respect to efficient, specific and rapid detection of hepatitis B virus (HBV). The biosensors developed based on different techniques, including optical methods (e.g., surface plasmon resonance), acoustic wave technologies (e.g., quartz crystal microbalance), electrochemistry (amperometry, voltammetry and impedance) and novel nanotechnology, are also discussed.
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Ahmad M, Afzal M, Tabassum S, Kalińska B, Mrozinski J, Bharadwaj PK. Synthesis and structure elucidation of a cobalt(II) complex as topoisomerase I inhibitor: In vitro DNA binding, nuclease and RBC hemolysis. Eur J Med Chem 2014; 74:683-93. [PMID: 24287075 DOI: 10.1016/j.ejmech.2013.10.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 10/06/2013] [Accepted: 10/10/2013] [Indexed: 11/26/2022]
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24
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Sex determination based on amelogenin DNA by modified electrode with gold nanoparticle. Anal Biochem 2013; 443:132-8. [DOI: 10.1016/j.ab.2013.08.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/27/2013] [Accepted: 08/29/2013] [Indexed: 11/19/2022]
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25
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Electrochemical sensor based on direct electron transfer of HIV-1 Virus at Au nanoparticle modified ITO electrode. Biosens Bioelectron 2013; 49:531-5. [DOI: 10.1016/j.bios.2013.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 05/29/2013] [Accepted: 06/05/2013] [Indexed: 11/19/2022]
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26
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Xu L, Su HR, Sun GR, Wang Y, Guo SJ, Zhang XR, Zhang SS, Xing SC. Fluorescein-labeled "arch-like" DNA probes for electrochemical detection of DNA on gold nanoparticle-modified gold electrodes. J Biotechnol 2013; 168:388-93. [PMID: 24140637 DOI: 10.1016/j.jbiotec.2013.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 09/26/2013] [Accepted: 09/30/2013] [Indexed: 10/26/2022]
Abstract
In the present study, a gold nanoparticle-modified gold electrode (nanogold electrode) was used to develop a novel fluorescein electrochemical DNA biosensor based on a target-induced conformational change. The nanogold electrode was obtained by electrodepositing gold nanoparticles onto a bare gold electrode. This modification not only immobilized probe oligonucleotides, but also adsorbed fluorescein onto the surface of the gold nanoparticles to form an "arch-like" structure. This article compares the electrochemical signal changes caused by the hybridization of "arch-like" DNA on nanogold electrode and linear DNA on bare gold electrode. The results showed that the adsorption effect of nanogold can enhance the sensitivity of the sensor. The linear range of target ssDNA is from 2.0 × 10(-9)M to 2.0 × 10(-8)M with a correlation coefficient of 0.9956 and detection limit (3σ) of 7.10 × 10(-10)M. Additionally, the specificity and hybridization response of this simple sensor were investigated.
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Affiliation(s)
- Lin Xu
- The Affiliated Hospital of Medical College Qingdao University, 266003, PR China
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27
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Highly sensitive localized surface plasmon resonance immunosensor for label-free detection of HIV-1. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 9:1018-26. [DOI: 10.1016/j.nano.2013.03.005] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 03/06/2013] [Accepted: 03/08/2013] [Indexed: 01/28/2023]
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28
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Sensitive detection of enteropathogenic E. coli using a bfpA gene-based electrochemical sensor. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-1061-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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29
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Wang Q, Ding Y, Wang L, Ni J, Yu Z, Lin H, Gao F. Low-Background, Highly Sensitive DNA Biosensor by Using an Electrically Neutral Cobalt(II) Complex as the Redox Hybridization Indicator. Chem Asian J 2013; 8:1455-62. [DOI: 10.1002/asia.201300047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 03/07/2013] [Indexed: 11/10/2022]
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30
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Analysis of the evolution of the detection limits of electrochemical DNA biosensors. Anal Bioanal Chem 2013; 405:3705-14. [DOI: 10.1007/s00216-012-6672-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 12/04/2012] [Accepted: 12/18/2012] [Indexed: 11/26/2022]
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31
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Architecture of Fe3O4–graphene oxide nanocomposite and its application as a platform for amino acid biosensing. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.03.077] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Wang QX, Gao F, Gao F, Li SX, Weng W, Liu FQ, Jiao K. A novel hybridization indicator for the low-background detection of short DNA fragments based on an electrically neutral cobalt(II) complex. Biosens Bioelectron 2012; 32:50-5. [DOI: 10.1016/j.bios.2011.11.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 11/09/2011] [Accepted: 11/10/2011] [Indexed: 11/30/2022]
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33
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Novel impedimetric immunosensor for the detection and quantitation of Adenovirus using reduced antibody fragments immobilized onto a conducting copolymer surface. Biosens Bioelectron 2012; 32:104-10. [DOI: 10.1016/j.bios.2011.11.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/18/2011] [Accepted: 11/24/2011] [Indexed: 10/14/2022]
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34
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Fabrication and evaluation of [Co(phen)2L]3+-modified DNA-MWCNT and SDS-MWCNT electrodes for electrochemical detection of 6-mercaptopurine. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2011.11.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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35
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Electrochemical spectroscopic investigations on the interaction of an ytterbium complex with DNA and their analytical applications such as biosensor. Int J Biol Macromol 2011; 49:1117-23. [DOI: 10.1016/j.ijbiomac.2011.09.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 09/03/2011] [Accepted: 09/08/2011] [Indexed: 01/31/2023]
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36
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Electrochemical and electrocatalytic properties of cobalt nanoparticles deposited on graphene modified glassy carbon electrode: Application to some amino acids detection. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.10.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Xu S, Lu C, Shao J, Li Q, Li H, Li W. DNA oxidation mediated by [Ru(bpy)2tatp]2+ upon incorporation of [Co(phen)3]3+. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2011.07.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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38
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Li Z, Zeng G, Tang L, Zhang Y, Li Y, Pang Y, Luo J, Liu Y. Electrochemical DNA sensor for simultaneous detection of genes encoding two functional enzymes involved in lignin degradation. Biochem Eng J 2011. [DOI: 10.1016/j.bej.2011.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Zeng G, Li Z, Tang L, Wu M, Lei X, Liu Y, Liu C, Pang Y, Zhang Y. Gold nanoparticles/water-soluble carbon nanotubes/aromatic diamine polymer composite films for highly sensitive detection of cellobiose dehydrogenase gene. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.03.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Electrochemical detection and discrimination of single copy gene target DNA in non-amplified genomic DNA. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.11.092] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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41
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Zhang Y, Wang Z, Wang Y, Huang L, Jiang W, Wang M. Electrochemical Detection of Sequence-Specific DNA with the Amplification of Gold Nanoparticles. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2011. [DOI: 10.4061/2011/619782] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A sensitive electrochemical DNA biosensor was prepared based on mercaptoacetic acid (MAA)/gold nanoparticles (AuNPs) modified electrode. Probe DNA (NH2-DNA) was covalently linked to the carboxyl group of MAA in the presence of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxyl-succinimide (NHS). Scanning electron microscopy (SEM) and electrochemical impedance spectra (EIS) were used to investigate the film assembly process. The DNA hybridization events were monitored by differential pulse voltammetry (DPV), and adriamycin was used as the electrochemical indicator. Also the factors influencing the performance of the DNA hybridization were investigated in detail. Under the optimal conditions, the signal was linearly changed with target DNA concentration increased from 5.0 × 10−13to 1.0 × 10−9 M and had a detection limit of 1.7 × 10−13 M (signal/noise ratio of 3). In addition, the DNA biosensor showed good reproducibility and stability during DNA assay.
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Affiliation(s)
- Yuzhong Zhang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
| | - Zhen Wang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
| | - Yuehong Wang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
| | - Lei Huang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
| | - Wei Jiang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
| | - Mingzhu Wang
- College of Chemistry and Materials Science, Anhui Key Laboratory of Chemo-Biosensing, Anhui Normal University, Wuhu 241000, China
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42
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Oztekin Y, Ramanaviciene A, Yazicigil Z, Solak AO, Ramanavicius A. Direct electron transfer from glucose oxidase immobilized on polyphenanthroline-modified glassy carbon electrode. Biosens Bioelectron 2010; 26:2541-6. [PMID: 21146394 DOI: 10.1016/j.bios.2010.11.001] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Revised: 10/28/2010] [Accepted: 11/07/2010] [Indexed: 11/26/2022]
Abstract
This study reports direct electron transfer (DET) from immobilized glucose oxidase (GOx) via grafted and electropolymerized 1,10-phenanthroline monohydrate (PMH). The layer of poly-1,10-phenanthroline (PPMH) was gained via electrochemical deposition, which was used to create the PPMH-modified GC-electrode (PPMH/GC-electrode). Further, the GOx was immobilized on the PPMH/GC-electrode. The effect of surface-modification by the PPMH on the electron-transfer between enzyme and electrode-surface and some other electrochemical/analytical-parameters of newly designed enzymatic-electrode were evaluated. The PPMH/GC-electrode showed superior DET to/from flavine adenine dinucleotide cofactor of GOx, while some redox-compounds including ferrocene and K(3)[Fe(CN)(6)] were completely electrochemically inactive on the PPMH/GC-electrode. It was also found that the resulting GOx/PPMH/GC-electrode functioned as a "direct response type" glucose-biosensor. The biosensor showed excellent selectivity towards glucose and demonstrated good operational-stability. According to our best knowledge, this study is the first scientific report on electrochemical-polymerization of PMH on the GC-electrode in non-aqueous media followed by its application in the design of glucose-biosensor.
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Affiliation(s)
- Yasemin Oztekin
- NanoTechnas-Center of Nanotechnology and Materials Science, Vilnius University, Faculty of Chemistry, Naugarduko 24, Vilnius, Lithuania
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43
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Adekunle AS, Pillay J, Ozoemena KI. Probing the electrochemical behaviour of SWCNT–cobalt nanoparticles and their electrocatalytic activities towards the detection of nitrite at acidic and physiological pH conditions. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2009.02.102] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Hejazi MS, Pournaghi-Azar MH, Ahour F. Electrochemical detection of short sequences of hepatitis C 3a virus using a peptide nucleic acid-assembled gold electrode. Anal Biochem 2009; 399:118-24. [PMID: 19931215 DOI: 10.1016/j.ab.2009.11.019] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 11/15/2009] [Accepted: 11/16/2009] [Indexed: 12/12/2022]
Abstract
Development of an electrochemical DNA biosensor, using a gold electrode modified with a self-assembled monolayer composed of a peptide nucleic acid (PNA) probe and 6-mercapto-1-hexanol, is described. The sensor relies on covalent attachment of the 14-mer PNA probe related to the hepatitis C virus genotype 3a (pHCV3a) core/E1 region on the electrode. Covalently self-assembled PNA could selectively hybridize with a complementary sequence in solution to form double-stranded PNA-DNA on the surface. The increase of peak current of methylene blue (MB), upon hybridization of the self-assembled probe with the target DNA in the solution, was observed and used to detect the target DNA sequence. Some hybridization experiments with noncomplementary oligonucleotides were carried out to assess whether the suggested DNA sensor responds selectively to the target. Diagnostic performance of the biosensor is described and the detection limit was found to be 5.7 x 10(-11)M with a relative standard deviation of 1.4% in phosphate buffer solution, pH 7.0. This sensor exhibits high reproducibility and could be used for detection of the target DNA for seven times after the regeneration process.
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Affiliation(s)
- M S Hejazi
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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45
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Du P, Li H, Mei Z, Liu S. Electrochemical DNA biosensor for the detection of DNA hybridization with the amplification of Au nanoparticles and CdS nanoparticles. Bioelectrochemistry 2009; 75:37-43. [DOI: 10.1016/j.bioelechem.2009.01.003] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 01/14/2009] [Accepted: 01/15/2009] [Indexed: 10/21/2022]
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46
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Discrimination of a copper complex to single- and double-stranded DNA as determined by electrochemical kinetics and thermodynamics. Bioelectrochemistry 2009; 75:32-6. [DOI: 10.1016/j.bioelechem.2008.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2008] [Revised: 12/30/2008] [Accepted: 12/31/2008] [Indexed: 11/23/2022]
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47
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Abstract
At present, most biomarker testing is taking place at centralised dedicated laboratories using large, automated analysers, increasing waiting time and costs. Smaller, faster and cheaper devices are highly desired for replacing these time-consuming laboratory analyses and for making analytical results available at the patient's bedside (point-of-care diagnostics). Innovative biosensor-based strategies could allow biomarkers to be tested reliably in a decentralised setting, although several challenges and limitations remain, which need to be improved, in the design and application of biosensors for the appropriate interpretation of the identified and quantified biomarkers. The development of biosensors is probably one of the most promising ways to solve some of the problems concerning the increasing need to develop highly sensitive, fast and economic methods of analysis in medical diagnostics. In this review, some consideration will be given to biosensors and their application in medical diagnostics, taking into account several crucial features.
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Affiliation(s)
- M Mascini
- Dipartimento di Chimica, Universita degli Studi di Firenze, Via della Lastruccia 3, Florence, Italy.
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48
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Zhou X, Liu L, Hu M, Wang L, Hu J. Detection of hepatitis B virus by piezoelectric biosensor. J Pharm Biomed Anal 2002; 681:8-15. [PMID: 11682242 DOI: 10.1016/j.aca.2010.09.038] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 09/22/2010] [Accepted: 09/23/2010] [Indexed: 01/16/2023]
Abstract
A highly sensitive piezoelectric HBV DNA biosensor has been developed based on the sensitive mass-transducing function of the quartz crystal microbalance and the speciality of nucleic acid hybridization reaction. HBV nucleic acid probe was immobilized onto the gold electrodes of a 9 MHz AT-cut piezoelectric quartz crystal with the polyethyleneimine adhesion, glutaraldehyde cross-linking (PEI-Glu) method or the physical adsorption method. The coated crystal with the PEI-Glu method to immobilized HBV nucleic acid probe showed the better results than the physical adsorption method with respect to sensitivity reproducibility and stability. The frequency shifts of hybridization have better linear relationship with the amount of HBV DNA, when the amount was in range 0.02-0.14 microg/ml. The crystal could be regenerated nearly five times without perceptible decrease of sensitivity.
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Affiliation(s)
- Xiaodong Zhou
- Department of Analysis-Measurement Science, Wuhan University, 430072, Wuhan, PR China
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