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Wei Y, Qi H, Zhang C. Recent advances and challenges in developing electrochemiluminescence biosensors for health analysis. Chem Commun (Camb) 2023; 59:3507-3522. [PMID: 36820650 DOI: 10.1039/d2cc06930j] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
This Feature Article simply introduces principles and mechanisms of electrochemiluminescence (ECL) biosensors for the determination of biomarkers and highlights recent advances of ECL biosensors on key aspects including new ECL reagents and materials, new biological recognition elements, and emerging construction biointerfacial strategies with illustrative examples and a critical eye on pitfalls and discusses challenges and perspectives of ECL biosensors for health analysis.
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Affiliation(s)
- Yuxi Wei
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
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Hu Y, Chen Y, Tang Q, Liu H. A sandwich-type ECL immunosensor for the sensitive determination of CEA content based on red emission carbon quantum dots as luminophores. NEW J CHEM 2021. [DOI: 10.1039/d1nj01002f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A novel electrochemiluminescent immunosensor was constructed based on the quenching effect between red emission carbon quantum dots and aminated graphene.
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Affiliation(s)
- Yuefang Hu
- College of Materials and Chemical Engineering
- Hezhou University
- Hezhou
- China
| | - Yuxin Chen
- Faculty of Chinese Medicine Science, Guangxi University of Chinese Medicine
- Nanning
- China
| | - Quan Tang
- College of Materials and Chemical Engineering
- Hezhou University
- Hezhou
- China
| | - Hanfu Liu
- College of Pharmacy, Guilin Medical University
- Guilin
- China
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Wijesinghe MS, Ngwa W, Chow K. Direct Electrochemical Aptamer‐Based Detection of Digoxin. ChemistrySelect 2020. [DOI: 10.1002/slct.202000286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Wilfred Ngwa
- Department of Physics and Applied Physics University of Massachusetts Lowell
- Dana-Farber Cancer Institute Brigham and Women's Hospital Harvard Medical School, Boston Massachusetts 02215 United States
| | - Kwok‐Fan Chow
- Department of Chemistry University of Massachusetts Lowell 1 University Ave., Lowell Massachusetts 01854 United States
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Wang B, Shi S, Yang X, Wang Y, Qi H, Gao Q, Zhang C. Separation-Free Electrogenerated Chemiluminescence Immunoassay Incorporating Target Assistant Proximity Hybridization and Dynamically Competitive Hybridization of a DNA Signal Probe. Anal Chem 2019; 92:884-891. [DOI: 10.1021/acs.analchem.9b03662] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Bing Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Suwen Shi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Xiaolin Yang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Yue Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Qiang Gao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, P.R. China
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Homogeneous electrogenerated chemiluminescence immunoassay for the detection of biomarkers by magnetic preconcentration on a magnetic electrode. Anal Bioanal Chem 2019; 411:4203-4211. [DOI: 10.1007/s00216-019-01830-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 03/22/2019] [Accepted: 04/03/2019] [Indexed: 12/13/2022]
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Zhang Y, Zhang R, Yang X, Qi H, Zhang C. Recent advances in electrogenerated chemiluminescence biosensing methods for pharmaceuticals. J Pharm Anal 2018; 9:9-19. [PMID: 30740252 PMCID: PMC6355466 DOI: 10.1016/j.jpha.2018.11.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/20/2022] Open
Abstract
Electrogenerated chemiluminescence (electrochemiluminescence, ECL) generates species at electrode surfaces, which undergoes electron-transfer reactions and forms excited states to emit light. It has become a very powerful analytical technique and has been widely used in such as clinical testing, biowarfare agent detection, and pharmaceutical analysis. This review focuses on the current trends of molecular recognition-based biosensing methods for pharmaceutical analysis since 2010. It introduces a background of ECL and presents the recent ECL developments in ECL immunoassay (ECLIA), immunosensors, enzyme-based biosensors, aptamer-based biosensors, and molecularly imprinted polymers (MIP)-based sensors. At last, the future perspective for these analytical methods is briefly discussed.
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Affiliation(s)
- Yu Zhang
- Medpace Bioanalytical Laboratories, 5365 Medpace Way, Cincinnati, OH 45227, USA
| | - Rui Zhang
- School of Informatics, Computing, and Engineering, Indiana University, Bloomington, IN 47405, USA
| | - Xiaolin Yang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
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Liang XL, Bao N, Luo X, Ding SN. CdZnTeS quantum dots based electrochemiluminescent image immunoanalysis. Biosens Bioelectron 2018; 117:145-152. [DOI: 10.1016/j.bios.2018.06.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 06/02/2018] [Indexed: 10/14/2022]
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Wang S, Jiang M, Ju Z, Qiao X, Xu Z. A flow-injection chemiluminescent biomimetic immunoassay method using a molecularly imprinted polymer as a biomimetic antibody for the determination of trichlorfon. FOOD AGR IMMUNOL 2017. [DOI: 10.1080/09540105.2017.1364707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Shoumin Wang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian, People’s Republic of China
| | - Mingdi Jiang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian, People’s Republic of China
| | - Zeliang Ju
- Agricultural Bureau of Linqu, Linqu, People’s Republic of China
| | - Xuguang Qiao
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian, People’s Republic of China
| | - Zhixiang Xu
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian, People’s Republic of China
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Li NL, Jia LP, Ma RN, Jia WL, Lu YY, Shi SS, Wang HS. A novel sandwiched electrochemiluminescence immunosensor for the detection of carcinoembryonic antigen based on carbon quantum dots and signal amplification. Biosens Bioelectron 2017; 89:453-460. [DOI: 10.1016/j.bios.2016.04.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/03/2016] [Accepted: 04/06/2016] [Indexed: 01/28/2023]
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Qi Y, Xiu FR, Li B. One-step homogeneous non-stripping chemiluminescence metal immunoassay based on catalytic activity of gold nanoparticles. Anal Biochem 2014; 449:1-8. [DOI: 10.1016/j.ab.2013.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/26/2013] [Accepted: 12/04/2013] [Indexed: 10/25/2022]
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Liu W, Zhang Y, Ge S, Song X, Huang J, Yan M, Yu J. Core–shell Fe3O4–Au magnetic nanoparticles based nonenzymatic ultrasensitive electrochemiluminescence immunosensor using quantum dots functionalized graphene sheet as labels. Anal Chim Acta 2013; 770:132-9. [DOI: 10.1016/j.aca.2013.01.039] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Revised: 12/18/2012] [Accepted: 01/17/2013] [Indexed: 01/19/2023]
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12
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Qi H, Qiu X, Xie D, Ling C, Gao Q, Zhang C. Ultrasensitive Electrogenerated Chemiluminescence Peptide-Based Method for the Determination of Cardiac Troponin I Incorporating Amplification of Signal Reagent-Encapsulated Liposomes. Anal Chem 2013; 85:3886-94. [DOI: 10.1021/ac4005259] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Honglan Qi
- Key Laboratory of Applied Surface
and Colloid Chemistry, Ministry of Education, School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Xiaoying Qiu
- Key Laboratory of Applied Surface
and Colloid Chemistry, Ministry of Education, School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Danping Xie
- Key Laboratory of Applied Surface
and Colloid Chemistry, Ministry of Education, School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Chen Ling
- Xianyang Central Hospital, Xi’an 713199, P.R. China
| | - Qiang Gao
- Key Laboratory of Applied Surface
and Colloid Chemistry, Ministry of Education, School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Chengxiao Zhang
- Key Laboratory of Applied Surface
and Colloid Chemistry, Ministry of Education, School of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Apoferritin protein nanoparticles dually labeled with aptamer and horseradish peroxidase as a sensing probe for thrombin detection. Anal Chim Acta 2012; 759:53-60. [PMID: 23260676 DOI: 10.1016/j.aca.2012.10.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 10/17/2012] [Accepted: 10/20/2012] [Indexed: 01/08/2023]
Abstract
A novel and ultrasensitive sandwich-type electrochemical aptasensor has been developed for the detection of thrombin, based on dual signal-amplification using HRP and apoferritin. Core/shell Fe(3)O(4)/Au magnetic nanoparticles (AuMNPs) loading aptamer1 (Apt1) was used as recognition elements, and apoferritin dually labeled with Aptamer2 (Apt2) and HRP was used as a detection probe. Sandwich-type complex, Apt1/thrombin/Apt2-apoferritin NPs-HRP was formed by the affinity reactions between AuMNPs-Apt1, thrombin, and Apt2-apoferritin-HRP. The complex was anchored on a screen-printed carbon electrode (SPCE). Differential pulse voltammetry (DPV) was used to monitor the electrode response. The proposed aptasensor yielded a linear current response to thrombin concentrations over a broad range of 0.5-100 pM with a detection limit of 0.07 pM (S/N=3). The detection signal was amplified by using apoferritin and HRP. This nanoparticle-based aptasensor offers a new method for rapid, sensitive, selective, and inexpensive quantification of thrombin, and offers a promising potential in protein detection and disease diagnosis.
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Reagent-less electrogenerated chemiluminescence peptide-based biosensor for the determination of prostate-specific antigen. Talanta 2012; 100:162-7. [DOI: 10.1016/j.talanta.2012.08.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 08/23/2012] [Accepted: 08/27/2012] [Indexed: 11/24/2022]
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Ma F, Jia L, Zhang Y, Sun B, Qi H, Gao Q, Zhang C. Electrogenerated chemiluminescence aptasensor for thrombin incorporating poly(pyrrole-co-pyrrole propylic acid) nanoparticles loaded with aptamer and ruthenium complex. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4329-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Li Y. Electrogenerated chemiluminescence detection of mercury(II) ions based on DNA probe labeled with ruthenium complex. ANAL SCI 2011; 27:193-6. [PMID: 21321444 DOI: 10.2116/analsci.27.193] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel mercury(II) ion (Hg(2+)) biosensor with electrogenerated chemiluminescence (ECL) detection using tris(2,2'-bipyridyl) ruthenium derivatives (ruthenium complex) as labeling was developed in the prescent work. One thymine (T)-rich single-strand DNA (ssDNA) labeled with a ruthenium complex was taken as an ECL probe. When the other T-rich capture ssDNA was self-assembled onto the surface of a gold electrode with a thiol group, and then hybridized with the ECL probe to form double-strand DNA (dsDNA) structures in the presence of Hg(2+), a strong ECL response was electrochemically generated. The ECL intensity was linearly related to the concentration of Hg(2+) in the range from 1.0 × 10(-6) to 1 × 10(-9) M with a detection limit of 3.0 × 10(-10) M. The relative standard deviation was 4.1% at 1.0 × 10(-7) M Hg(2+) (n = 5). This work demonstrates that the combination of the strongly binding T-rich DNA to Hg(2+) with the highly sensitive ECL technique to design an ECL Hg(2+) biosensor is a great promising approach for the determination of metal ions.
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Affiliation(s)
- Yaping Li
- Department of Chemistry and Chemical Engineering, Ankang University, Ankang 725000, P. R. China.
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Fan A, Cao Z, Li H, Kai M, Lu J. Chemiluminescence platforms in immunoassay and DNA analyses. ANAL SCI 2009; 25:587-97. [PMID: 19430138 DOI: 10.2116/analsci.25.587] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Chemiluminescent (CL) detection techniques for DNA assays and immunoassays have become very popular in recent years. This review discusses recent advances in those CL assays that have occurred over the last few years. In the monoplex assay section, different classes of CL labels including nanoparticle, DNAzyme, acridinium ester, enzyme and luminol-based CL assays are reviewed concerning the detection of DNAs and proteins. In the multiplex assay section, both spatial resolution and substrate zone-resolved techniques are discussed.
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Affiliation(s)
- Aiping Fan
- School of Pharmacy, Fudan University, Shanghai 200032, China
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Wang H, Shen G, Yu R. Aspects of recent development of immunosensors. ELECTROCHEMICAL SENSORS, BIOSENSORS AND THEIR BIOMEDICAL APPLICATIONS 2008. [PMCID: PMC7150224 DOI: 10.1016/b978-012373738-0.50011-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This chapter focuses on the recent developments in the field of immunosensors. Immunosensors incorporate the specific immunochemical reaction with the modern transducers including electrochemical (potentiometric, conductometric, capacitative, impedance, amperometric), optical (fluorescence, luminescence, refractive index), and microgravimetric transducers. These immunosensor devices with dramatic improvements in the sensitivity and selectivity possess the abilities to investigate the reaction dynamics of antibody–antigen binding and the potential to revolutionize conventional immunoassay techniques. With the rapid development of immunological reagents and detection equipments, immunosensors have allowed an increasing range of analytes to be identified and quantified and in particular, simple-to-use, inexpensive, and reliable immunosensing systems have been developed for areas such as outpatient monitoring, large screening programs, and remote environmental surveillance. Immunosensors with lowered detection limits and increased sensitivities have been developed in various fields, particularly in clinical analysis. A noticeable development trend is also observed in the development of immunosensors combining with other techniques such as flow injection analysis (FIA) or capillary electrophoretic (CE) analysis, which complement and improve the present immunoassay methods. Belov et al. have proposed a novel immunophenotyping method for leukemias which uses a cluster of differentiation antibody microarray, and a microarray of enzyme-linked immunosorbent assay has been developed for autoimmune diagnosis of systematic rheumatic disease. Development of microfluidic immunosensor systems for proteomics and drug discovery have also been reported in recent years where the microfluidic system integrates multiple processes in a single device to improve analytical performance by reducing the reagent consumption and the analysis time, and increasing reliability and sensitivity through automation.
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Li Y, Qi H, Peng Y, Yang J, Zhang C. Electrogenerated chemiluminescence aptamer-based biosensor for the determination of cocaine. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.07.038] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Zhang C, Qi H, Zhang M. Homogeneous electrogenerated chemiluminescence immunoassay for the determination of digoxin employing Ru(bpy)(2)(dcbpy)NHS and carrier protein. LUMINESCENCE 2007; 22:53-9. [PMID: 16874850 DOI: 10.1002/bio.926] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A highly sensitive homogeneous electrogenerated chemiluminescence (ECL) immunoassay for the determination of anti-digoxin antibody and digoxin hapten was developed employing Ru(bpy)(2)(dcbpy)NHS (bpy = 2,2'-bipyridyl; dcbpy = 2,2'-bipyridine-4,4'-dicarboxylic acid; NHS = N-hydroxysuccinimide ester) as an electrochemiluminescent label and bovine serum albumin (BSA) as a carrier protein. A digoxin hapten was indirectly heavily labelled with Ru(bpy)(2)(dcbpy)NHS through BSA to form Ru(bpy)(2)(dcbpy)NHS-BSA-digoxin conjugate. The ECL intensity of the immunocomplex of the conjugate with anti-digoxin antibody markedly decreased when the immunoreaction between Ru(bpy)(2)(dcbpy)NHS-BSA-digoxin conjugate and anti-digoxin antibody took place. Two formats, direct homogeneous immunoassay for anti-digoxin antibody and competitive immunoassay for digoxin, were developed to determine anti-digoxin antibody and digoxin, respectively. The anti-digoxin antibody concentration in the range 7.6 x 10(-8)-7.6 x 10(-6) g/mL was determined by direct homogeneous format. Digoxin hapten was determined throughout the range 4.0 x 10(-10)-1.0 x 10(-7) g/mL with a detection limit of 1.0 x 10(-10) g/mL by competitive format. The relative standard derivation for 6.0 x 10(-9) g/mL was 4.3%. The method has been applied to assaying digoxin in control human serum.
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Affiliation(s)
- Chengxiao Zhang
- Department of Chemistry, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, People's Republic of China.
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Wang H, Zhang C, Li Y, Qi H. Electrogenerated chemiluminescence detection for deoxyribonucleic acid hybridization based on gold nanoparticles carrying multiple probes. Anal Chim Acta 2006; 575:205-11. [PMID: 17723592 DOI: 10.1016/j.aca.2006.05.080] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Revised: 05/21/2006] [Accepted: 05/25/2006] [Indexed: 11/22/2022]
Abstract
A novel sensitive electrogenerated chemiluminescence (ECL) method for the detection deoxyribonucleic acid (DNA) hybridization based on gold nanoparticles carrying multiple probes was developed. Ruthenium bis(2,2'-bipyridine)(2,2'-bipyridine-4,4'-dicarboxylic acid)-N-hydroxysuccinimide ester (Ru(bpy)2(dcbpy)NHS) was used as a ECL label and gold nanoparticle as a carrier. Probe single strand DNA (ss-DNA) was self-assembled at the 3'-terminal with a thiol group to the surface of gold nanoparticle and covalently labeled at the 5'-terminal of a phosphate group with Ru(bpy)2(dcbpy)NHS and the resulting conjugate, (Ru(bpy)2(dcbpy)NHS)-ss-DNA-Au, was taken as a ECL probe. When target analyte ss-DNA was immobilized on a gold electrode by self-assembled monolayer technique and then hybridized with the ECL probe to form a double-stranded DNA (ds-DNA), a strong ECL response was electrochemically generated. The ECL intensity was linearly related to the concentration of the complementary sequence (target ss-DNA) in the range from 1.0 x 10(-11) to 1.0 x 10(-8) mol L(-1), and the linear regression equation was S=57301+4579.6 lg C (unit of C is mol L(-1)). A detection limit of 5.0 x 10(-12) mol L(-1) for target ss-DNA was achieved. The ECL signal generated from many reporters of ECL probe prepared is greatly amplified, compared to the convention scheme which is based on one reporter per hybridization event.
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Affiliation(s)
- Hui Wang
- School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, PR China
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Marquette CA, Blum LJ. State of the art and recent advances in immunoanalytical systems. Biosens Bioelectron 2006; 21:1424-33. [PMID: 16337371 DOI: 10.1016/j.bios.2004.09.037] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2004] [Revised: 09/02/2004] [Accepted: 09/03/2004] [Indexed: 11/24/2022]
Abstract
This article is an overview the state of the art and the recent developments in immunosensors. Homogeneous immunosensors, heterogeneous immunosensors, integrated immunosensors and biochip format immunosensors are presented, based on optical, electrochemical, magnetic or mechanical detection/transduction systems.
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Affiliation(s)
- Christophe A Marquette
- Laboratoire de Génie Enzymatique et Biomoléculaire, UMR 5013, CNRS Université Claude Bernard Lyon 1, Bât. CPE, Villeurbanne, France.
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Li ZP, Wang YC, Liu CH, Li YK. Development of chemiluminescence detection of gold nanoparticles in biological conjugates for immunoassay. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.07.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Study on the enhancement of electrochemiluminescence of luminol–H2O2 system by sulphonated cobalt(II) phthalocyanine. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.07.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Affiliation(s)
- Mark M Richter
- Department of Chemistry, Southwest Missouri State University, Springfield, Missouri 65804-0089, USA.
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Current awareness in phytochemical analysis. PHYTOCHEMICAL ANALYSIS : PCA 2004; 15:415-422. [PMID: 15595457 DOI: 10.1002/pca.751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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