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Label-free electrochemical bioplatform based on Au-modified magnetic Fe3O4/α-Fe2O3 hetero-nanorods for sensitive quantification of ovarian cancer tumor marker. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Song G, Han H, Ma Z. Anti-Fouling Strategies of Electrochemical Sensors for Tumor Markers. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115202. [PMID: 37299929 DOI: 10.3390/s23115202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/26/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023]
Abstract
The early detection and prognosis of cancers require sensitive and accurate detection methods; with developments in medicine, electrochemical biosensors have been developed that can meet these clinical needs. However, the composition of biological samples represented by serum is complex; when substances undergo non-specific adsorption to an electrode and cause fouling, the sensitivity and accuracy of the electrochemical sensor are affected. In order to reduce the effects of fouling on electrochemical sensors, a variety of anti-fouling materials and methods have been developed, and enormous progress has been made over the past few decades. Herein, the recent advances in anti-fouling materials and strategies for using electrochemical sensors for tumor markers are reviewed; we focus on new anti-fouling methods that separate the immunorecognition and signal readout platforms.
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Affiliation(s)
- Ge Song
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Hongliang Han
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing 100048, China
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Du L, Chen Y, Huang Y, Yan S, Zhang S, Dai H. Photothermal enhanced fluorescence quenching of Tb-norfloxacin for ultrasensitive human epididymal 4 detection. Mikrochim Acta 2023; 190:108. [PMID: 36867247 DOI: 10.1007/s00604-023-05689-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/31/2023] [Indexed: 03/04/2023]
Abstract
A fluorescence quenching enhanced immunoassay has been developed to achieve ultrasensitive recognition of human epididymal 4 (HE4) modifying the fluorescence quencher. The carboxymethyl cellulose sodium-functionalized Nb2C MXene nanocomposite (CMC@MXene) was firstly introduced to quench the fluorescence signal of the luminophore Tb-Norfloxacin coordination polymer nanoparticles (Tb-NFX CPNPs). The Nb2C MXene nanocomposite as fluorescent nanoquencher inhibits the electron transfer between Tb and NFX to quench the fluorescent signal by coordinating the strongly electronegative carboxyl group on CMC with Tb (III) of Tb-NFX complex. Simultaneously, due to the superior photothermal conversion capability of CMC@MXene, the fluorescence signal has been further weakened by the photothermal effect driven non-radiative decay of the excited state under near-infrared laser irradiation. The constructed fluorescent biosensor based on CMC@MXene probe finally realized the enhanced fluorescence quenching effect, and achieved ultra-high sensitivity and selective detection of HE4, exhibiting a wide linear relationship with HE4 concentration on the logarithmic axis in the range of 10-5 to 10 ng/mL and a low detection limit of 3.3 fg/mL (S/N = 3). This work not only provides an enhanced fluorescent signal quenching method for the detection of HE4, but also provides novel insights for the design of fluorescent sensor toward different biomolecules.
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Affiliation(s)
- Lizhen Du
- College of Chemistry and Material, Fujian Normal University, Fuzhou, 350108, People's Republic of China
| | - Yanjie Chen
- College of Chemistry and Material, Fujian Normal University, Fuzhou, 350108, People's Republic of China
| | - Yitian Huang
- College of Chemistry and Material, Fujian Normal University, Fuzhou, 350108, People's Republic of China
| | - Shanshan Yan
- College of Chemical and Material Engineering, Quzhou University, Quzhou, 32400, Zhejiang, China.
| | - Shupei Zhang
- College of Chemical and Material Engineering, Quzhou University, Quzhou, 32400, Zhejiang, China
| | - Hong Dai
- College of Chemical and Material Engineering, Quzhou University, Quzhou, 32400, Zhejiang, China.
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Zhang Z, Yao T, Han H, Ma Z. Universal and High-Speed Zeptomolar Protein Serum Assay with Unprecedented Sensitivity. Anal Chem 2022; 94:16231-16236. [DOI: 10.1021/acs.analchem.2c03949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Ze Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Tao Yao
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Hongliang Han
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhanfang Ma
- Department of Chemistry, Capital Normal University, Beijing 100048, China
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Wu R, Yu S, Chen S, Dang Y, Wen SH, Tang J, Zhou Y, Zhu JJ. A carbon dots-enhanced laccase-based electrochemical sensor for highly sensitive detection of dopamine in human serum. Anal Chim Acta 2022; 1229:340365. [PMID: 36156223 DOI: 10.1016/j.aca.2022.340365] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/26/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022]
Abstract
Enzyme-based electrochemical sensor possesses a significant advantage in the highly efficient detection of small molecules, however, the poor electron transport efficiency limits their wide application. In this study, taking advantage of the distinct biocatalytic activity of laccase and the excellent electroconductibility of carbon dots, a carbon dots-enhanced laccase-based electrochemical sensor for the detection of dopamine (DA) is established. Thereinto, laccase can specifically recognize DA and promote its electrocatalytic oxidation on the electrode, while, the carbon dots can be used as the immobilization substrate of laccase and enhance its electron transfer efficiency, thus achieving the highly sensitive detection of dopamine. The electrochemical performance of the modified electrode interface is studied by electrochemical impedance spectroscopy and differential pulse voltammetry. As demonstrated, the electrocatalytic activity of the proposed electrochemical sensor for DA is significantly improved and exhibits a low detection limit (0.08 μM) and a wide linear range (0.25 μM-76.81 μM). The excellent selectivity allows the sensor has the capacity for specific discrimination the DA from other interferents. Furthermore, by analyzing the DA in human serum verifies the practicability of this assay in real sample analysis.
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Affiliation(s)
- Ru Wu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Sha Yu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Siyu Chen
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Yuan Dang
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Shao-Hua Wen
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Jieli Tang
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China
| | - Yuanzhen Zhou
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China.
| | - Jun-Jie Zhu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, PR China; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, PR China.
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Cu-Boosted One-Pot Nanoarchitectonics for Synthesis of Polydopamine Membranes as Reusable Laccase Mimic. J Colloid Interface Sci 2022; 628:935-942. [DOI: 10.1016/j.jcis.2022.07.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 11/20/2022]
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Ortega FG, Gomez GE, Boni C, García IC, Navas CG, D'vries RF, Molina Vallejos MP, Serrano Fernández MJ, Messina GA, Hernández JE, Fernández-Baldo MA. Microfluidic amperometric immunosensor based on porous nanomaterial towards claudin7 determination for colorectal cancer diagnosis. Talanta 2022; 251:123766. [DOI: 10.1016/j.talanta.2022.123766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/12/2022] [Accepted: 07/20/2022] [Indexed: 10/16/2022]
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