1
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Deng L, Du J, Hun X. Photoelectrochemical assay based on CRISPR/Cas12a coupled with AuNP/MoS2/WS2/g-C3N4 nanoprobe for determination of hepatitis B virus. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Recent progress in homogeneous electrochemical sensors and their designs and applications. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116712] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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3
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Hou T, Xu N, Song X, Yang L, Li F. Label-free homogeneous photoelectrochemical aptasensing of VEGF165 based on DNA-regulated peroxidase-mimetic activity of metal-organic-frameworks. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Zhang J, Xue X, Du Y, Zhao J, Ma H, Ren X, Wei Q, Ju H. Antigen-Down PEC Immunosensor for CYFRA21-1 Detection Based on Photocurrent Polarity Switching Strategy. Anal Chem 2022; 94:12368-12373. [PMID: 36045488 DOI: 10.1021/acs.analchem.2c01478] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this work, an antigen-down photoelectrochemical (PEC) immunosensor based on a signal polarity switching strategy for the detection of cytokeratin 19 fragment 21-1 (CYFRA21-1) was proposed. 3,4,9,10-Perylene tetracarboxylic acid (PTCA) is a conjugated organic dye containing five benzene nuclei, which has excellent film-forming and optical properties. PTCA sensitized by SnS2 can further improve the basal signal and the stability of the PEC immunosensor. Moreover, avidin-functionalized CuInS2 as a signal probe can convert the basal anodic photocurrent to a cathodic photocurrent. Therefore, the PEC sensor realized the photocurrent polarity conversion before and after labeling. With avidin-functionalized CuInS2, the polarity of the photocurrent was changed once CYFRA21-1 was detected. Therefore, the PEC immunosensor owns high sensitivity. The linear range of the immunosensor for the detection of CYFRA21-1 is 0.00001-500 ng·mL-1, and the detection limit is 3.5 fg·mL-1. The PEC immunosensor has good stability, high selectivity, and good repeatability. This work may provide a new way for the detection of CYFRA21-1 and other proteins.
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Affiliation(s)
- Jinhuan Zhang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.,Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, University of Jinan, Jinan 250022, Shandong, China
| | - Xiaodong Xue
- Shandong Academy of Environmental Sciences Co., Ltd. Jinan 250013, Shandong, China
| | - Yizhen Du
- Shandong Academy of Environmental Sciences Co., Ltd. Jinan 250013, Shandong, China
| | - Jinxiu Zhao
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Hongmin Ma
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.,Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, University of Jinan, Jinan 250022, Shandong, China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.,Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, University of Jinan, Jinan 250022, Shandong, China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.,Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, University of Jinan, Jinan 250022, Shandong, China
| | - Huangxian Ju
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China.,Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection, University of Jinan, Jinan 250022, Shandong, China
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5
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Homogeneous photoelectrochemical biosensor for sensitive detection of omethoate via ALP-mediated pesticide assay and Bi 2S 3@Bi 2Sn 2O 7 heterojunction as photoactive material. Anal Bioanal Chem 2022; 414:7277-7289. [PMID: 35984445 DOI: 10.1007/s00216-022-04279-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/01/2022] [Accepted: 08/09/2022] [Indexed: 11/01/2022]
Abstract
A simple homogeneous photoelectrochemical (PEC) sensing platform based on an alkaline phosphatase (ALP)-mediated pesticide assay was established for the sensitive detection of omethoate (OM). The Bi2S3@Bi2Sn2O7 heterojunction was used as a photoactive material to provide stable background photocurrent signals. The inhibition of OM on ALP and PEC determination was carried out in the homogeneous system. In the absence of OM, dephosphorylation of L-ascorbic acid 2-phosphate trisodium salt (AAP) was catalyzed by ALP to produce the enzyme-catalyzed product (L-ascorbic acid, AA). AA, as an electron donor, could capture photogenerated holes on the Bi2S3@Bi2Sn2O7 heterojunction, thus inhibiting the recombination of electron holes to achieve an increase of the photocurrent signal. When the OM was introduced, the enzyme activity of ALP was reduced due to the organophosphorus pesticides (OPs)-based enzyme inhibition, and the AA produced by catalytic hydrolysis was also reduced, thus reducing the photocurrent signal. Compared with the traditional PEC sensor for OPs, this homogeneous PEC sensor avoided immobilization procedures, covalent labeling, separation, and the steric hindrance effect caused by immobilized biomolecules, which achieved high recognition efficiency and caused a reduction in analysis time. Additionally, an ALP-mediated pesticide assay for the determination of OPs with a simplified experimental process further improved the stability and reproducibility of the PEC sensor. The PEC sensor showed high sensitivity to the target OM within a dynamic range of 0.05 ~ 500 ng mL-1, and the detection limit was 0.0146 ng mL-1. Additionally, the PEC biosensing system showed good selectivity and anti-interference ability, and exhibited a satisfactory result in spinach and mustard samples. A homogeneous PEC biosensor based on ALP inhibition strategy was constructed for OM detection in vegetable samples via Bi2S3@Bi2Sn2O7 heterojunction as the photoactive substrate material.
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6
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Yang J, Luo F, Wang J, Qiu B, Shen J, Zhang L, Lin Z. Ultrasensitive Photoelectrochemical Biosensor for microRNA-155 Based on Energy Transfer between Au Nanocages and Red Emission Carbon Dot-Assembled Nanosheets Coupled with the Duplex-Specific Nuclease Enzyme-Assisted Target Recycling Strategy. Anal Chem 2021; 94:1482-1490. [PMID: 34968408 DOI: 10.1021/acs.analchem.1c05081] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Energy transfer (ET) is an effective tool to construct photoelectrochemical (PEC) biosensors for its high sensitivity. Since the materials to develop ET systems are limited, exploring new and universal ET systems is significant. Herein, new photoactive nanosheets (R-CDs NS) formed by self-assembling of red emission carbon dots (R-CDs) have been synthesized, which exhibit wide visible light absorption and stable photocurrent response and have an obvious sensitization effect for TiO2. Gold nanocages (AuNCs), whose absorption overlap well with the R-CDs' emission, were synthesized and served as PEC quenchers for the photosensitized system that consists of TiO2 and R-CDs. The ET between R-CDs and AuNCs can boost the recombination of photogenerated electron-hole pairs of R-CDs and results in a quenched photocurrent of this system. MicroRNA-155 was chosen as a model target. First, the nanocomposite containing R-CDs NS and AuNCs was prepared through DNA modification and hybridization. In the absence of the target, AuNCs and R-CDs were close enough for ET, with TiO2-modified FTO serving as the working electrode, and a quenched photocurrent was detected. In the presence of the target, the disintegration of the nanocomposite was induced through target hybridization and DNA hydrolyzation, leading to the separation of AuNCs and R-CDs NS, and the ET disappeared and led to a high photocurrent. With duplex-specific nuclease enzyme-assisted target recycling, the high sensitivity enabled the sensor to monitor the target in cancer cells. The sensor has a low detection limit of 71 aM. The sensing platform has high sensitivity, good selectivity, and reproducibility.
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Affiliation(s)
- Jiao Yang
- Department of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China.,Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Fang Luo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Jian Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Jie Shen
- Department of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China.,Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai 201508, China
| | - Lin Zhang
- Department of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China.,Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai 201508, China
| | - Zhenyu Lin
- Department of Emergency and Critical Care Medicine, Jinshan Hospital, Fudan University, Shanghai 201508, China.,Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.,Key Laboratory of Chemical Injury, Emergency and Critical Medicine of Shanghai Municipal Health Commission, Shanghai 201508, China
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7
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Zhao Y, Xiang J, Cheng H, Liu X, Li F. Flexible photoelectrochemical biosensor for ultrasensitive microRNA detection based on concatenated multiplex signal amplification. Biosens Bioelectron 2021; 194:113581. [PMID: 34461568 DOI: 10.1016/j.bios.2021.113581] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 12/13/2022]
Abstract
Precise microRNA (miRNA) analysis is significant importance for early disease diagnosis. Herein, a novel flexible photoelectrochemical (PEC) biosensor for miRNA determination was developed by employing CdS NPs-modified carbon cloth (CC) on polyimide (PI) film as photoelectric material to provide the PEC responses and an efficient four-stage reaction system as the target recognition and signal amplification unit to improve the analytical performance. In this PEC biosensor, the presence of target miR-21 would trigger the catalytic hairpin assembly (CHA) and the following hybridization chain reaction (HCR) to produce a long dsDNA labeled with numerous biotins, which would further capture a large amount of alkaline phosphatase (ALP) for catalyzing the generation of ascorbic acid (AA). As an efficient electron donor, AA could be oxidized by the photoelectrode, which would initiate a redox cycling amplification process to regenerate AA, resulting in the enhancement of the photocurrent response. Benefitting from the synergistic nucleic acid-based, enzyme catalytic, and chemical signal amplification strategies, the proposed biosensing strategy enabled ultrasensitive miRNA determination. As expected, the PEC biosensor performed satisfactory analytical performances with a linear range of 1 fM to 1 nM and the detection limit down to 0.41 fM. Furthermore, the PEC biosensing strategy exhibited recommendable selectivity, stability, flexibility, and practical applicability. Therefore, this sensing platform provides promising potential for application in bioassay and early diagnosis of disease.
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Affiliation(s)
- Yuecan Zhao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Junzhu Xiang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Hao Cheng
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Xiaojuan Liu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China.
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China.
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8
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Huang X, He Z, Zhou K, Zhi H, Yang J. Fabrication of bifunctional G-quadruplex-hemin DNAzymes for colorimetric detection of apurinic/apyrimidinic endonuclease 1 and microRNA-21. Analyst 2021; 146:7379-7385. [PMID: 34816841 DOI: 10.1039/d1an01603b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
G-quadruplex-based complexes have been widely used in various analytical methods due to their outstanding capabilities of generating colorimetric, fluorescent or electrochemical signals. However, since loop sequences in traditional G-quadruplex structures are quite short, it is difficult to establish biosensors solely using G-quadruplex-based complexes. Herein, we attempted to lengthen the loop sequences of G-quadruplex structures and found that G-quadruplex-hemin DNAzymes (G-DNAzymes) with long loops (even 30 nucleotides) maintain high peroxidase activity. In addition, the peroxidase activity is not affected by the hybridization of the long loop with its complementary counterpart. Consequently, G-DNAzyme can be endowed with an additional function by taking the long loop as a recognition element, which may facilitate the construction of diverse colorimetric biosensors. Furthermore, by designing an apurinic/apyrimidinic site or a complementary sequence of microRNA-21 (miRNA-21) in long loops, bifunctional G-DNAzymes can be split in the presence of apurinic/apyrimidinic endonuclease 1 (APE1) or miRNA-21, decreasing their peroxidase activities. Accordingly, APE1 and miRNA-21 are quantified using 3,3',5,5'-tetramethylbenzidine as a chromophore. Using the G-DNAzyme, APE1 can be detected in a linear range from 2.5 to 22.5 U mL-1 with a LOD of 1.8 U mL-1. It is to be noted that benefitting from duplex-specific nuclease-induced signal amplification, the linear range of the miRNA-21 biosensor is broadened to 5 orders of magnitude, while the limit of detection is as low as 73 fM. This work demonstrates that G-DNAzymes with long loops can both generate signals and recognize targets, providing an alternative strategy to design G-quadruplex-based analytical methods.
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Affiliation(s)
- Xiaodong Huang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China.
| | - Zhenni He
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China.
| | - Kejie Zhou
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China.
| | - Huizhen Zhi
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China.
| | - Jinfei Yang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, P. R. China.
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9
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Meng Y, Chen F, Jiang M, Guo Q, Wang Y, Wang J, Zhang DW. A Homogeneous Label-Free Electrochemical microRNA Biosensor Coupling With G-Triplex/Methylene Blue Complex and λ-Exonuclease-Assisted Recycling Amplification. Front Chem 2021; 9:753253. [PMID: 34805092 PMCID: PMC8600312 DOI: 10.3389/fchem.2021.753253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/21/2021] [Indexed: 11/14/2022] Open
Abstract
A novel homogeneous label-free electrochemical biosensor using G-triplex/methylene blue (G3/MB) complex as the signal generator together with an amplification assisted by the λ-exonuclease (λ-Exo) has been successfully constructed for ultrasensitive microRNA (miRNA) detection. An integrated microelectrode was designed to realize the miniaturization of the homogeneous electrochemical assay. Taking advantage of G3, that can specifically bind with MB and decrease its diffusion current, a single-stranded functional DNA hairpin structure was designed as the bio-recognition probe. The probe consisted of G3, eight bases to block G3, and the complementary sequences of the target miRNA. Here we chose miRNA141—a potentially diagnostic biomarker of prostate cancer as the model target. The presence of miRNA141 could hybridize with the probe DNA to form a double-stranded structure with a 5′-phosphorylated terminus. Then λ-Exo was adopted to digest mononucleotides from the 5′-end, leading to the release of G3 part and miRNA141. The released miRNA could hybridize with another probe to trigger the cycling process, while the released G3 could therefore interact with MB to cause a detectable decrease of diffusion current. The proposed strategy showed a low detection limit of 16 fM and an excellent specificity to discriminate single-base mismatches. Furthermore, this sensor was applied to detect miRNA141 from diluted human serum samples, indicating that it has great potential in the application of nucleic acid detection in real samples.
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Affiliation(s)
- Yao Meng
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China
| | - Fangming Chen
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China
| | - Mingrui Jiang
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China
| | - Qin Guo
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Xi'an, China
| | - Yaqiong Wang
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Xi'an, China
| | - Jian Wang
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Xi'an, China
| | - De-Wen Zhang
- Department of Biophysics, School of Basic Medical Sciences, Institute of Medical Engineering, Health Science Center, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Xi'an, China
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10
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Wang H, Zhang C, An X, Li G, Ye B, Zou L. Signal-off photoelectrochemical aptasensor for kanamycin: Strand displacement reaction combines p-n competition. Anal Chim Acta 2021; 1181:338927. [PMID: 34556232 DOI: 10.1016/j.aca.2021.338927] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/30/2021] [Accepted: 08/06/2021] [Indexed: 10/20/2022]
Abstract
A"signal-off" photoelectrochemical aptasensor based on p-n type semiconductor competitive quenching effect and strand displacement reaction was constructed for the determination of kanamycin. Au NPs@MgIn2S4-graphene composite was used as n-type photoactive semiconductor material. In the presence of the kanamycin, strand displacement reaction was triggered and the p-type CuInS2 quantum dots labeled aptamer was introduced on the Au NPs@MgIn2S4-graphene surface. The CuInS2 quantum dots can competitive consume the electron donors (AA) and light energy of the PEC system, thus quenched the anodic photocurrent of Au NPs@MgIn2S4-graphene. The photocurrent decreased with the increase of kanamycin concentration. The linear range of kanamycin was 1.0 pM-10 μM, and the detection limit was 1.7 pM. In addition, the method can be used for the determination of kanamycin in milk and honey.
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Affiliation(s)
- Hanxiao Wang
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Chi Zhang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450001, PR China
| | - Xinan An
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Gaiping Li
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Baoxian Ye
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Lina Zou
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China.
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11
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In-situ preparation of CuO nanoparticles decorated In 2O 3 pn heterojunction composite for the photoelectrochemical detection of ornidazole. Mikrochim Acta 2021; 188:372. [PMID: 34625823 DOI: 10.1007/s00604-021-05036-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 09/24/2021] [Indexed: 10/20/2022]
Abstract
The eco-friendly synthesis of metal oxides pn junction composite with high visible light absorption and its photoelectrochemical monitoring on antibiotics is reported. The In2O3-CuO pn heterojunction composite was successfully prepared by in-situ hydrothermal decoration of CuO on the prepared In2O3 using a simple reflux method. The obtained nanorods like In2O3-CuO pn heterojunction exhibited high conductivity with excellent stability for the facilitated photoelectrochemical detection of ornidazole (ONZ) that plays a role in aquatic toxicology. The photo-stability and optical characteristics of the In2O3-CuO heterojunction composite were analyzed through photocurrent and UV-visible studies. Mechanism of ONZ signaling has been proposed with appropriate band levels derived by Mott-Schottky analysis. An optimized In2O3-CuO heterojunction detects ONZ in the range 0.05-65.3 nM with 0.0092 nM as the limit of detection at - 0.45 V (vs. Ag/AgCl) working potential. The practical applicability of the sensor device was tested in chicken meat, human urine, and lake water samples containing ONZ. The recoveries of real samples were above 95% and results obtained were compared with electrochemical methods.
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12
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Yang J, Li Y, Guo L, Qiu B, Lin Z. Photoelectrochemical Biosensor for MicroRNA-21 Based on High Photocurrent of TiO 2/Two-Dimensional Coordination Polymer CuCl x(MBA) y Photoelectrode. Anal Chem 2021; 93:11010-11018. [PMID: 34323073 DOI: 10.1021/acs.analchem.1c02267] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Conventional photosensitive materials such as TiO2 suffer from restricted absorption in the ultraviolet region, fast recombination of photogenerated electron-hole pairs, and a lack of functional groups for biocoupling, which hinder their application in photoelectrochemical (PEC) biosensing. Herein, a new coordination polymer (CP) based on Cu(I), chloridion, and 4-mercaptobenzoic acid (MBA) has been designed and synthesized (called CuClx(MBA)y). The prepared p-type CuClx(MBA)y exhibits visible-light absorption due to its narrow optical band gap (2.59 eV), and its proper band edge position enables it to form a p-n junction with TiO2. Through layer-by-layer assembling, the photocurrent intensity of the CuClx(MBA)y/TiO2/FTO composite photoelectrode was 3.7-fold higher than that of a TiO2/FTO electrode and 35-fold higher than a CuClx(MBA)y/FTO electrode. The potential enhancement mechanism was discussed, which lies in the contributions of CuClx(MBA)y in enhancing absorption in the visible-light region and boosting the separation of electron-hole pairs of TiO2 by the p-n junction. Furthermore, CuClx(MBA)y nanosheets can realize bioconjugation directly, thanks to its abundant carboxyl groups. The CuClx(MBA)y/TiO2/FTO composite photoelectrodes were applied to develop a sensitive PEC biosensor for microRNA-21 (model target). By subtly exploiting the energy transfer between CuClx(MBA)y and Au nanoparticles (AuNPs), AuNPs served as effective quenchers. In the presence of the target, AuNP-labeled sDNA1 connected to the electrode surface, and thus, a decreased photocurrent was obtained. The proposed biosensor has a low detection limit of 0.29 fM (S/N = 3), good selectivity, and reproducibility. The proposed system was applied to monitor microRNA in cancer cells with satisfying results.
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Affiliation(s)
- Jiao Yang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Yanzhou Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, China
| | - Longhua Guo
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 56 South Yuexiu Road, Jiaxing, Zhejiang 314001, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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13
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Li H, Cao Y, Wu T, Zhang Y, Zheng Z, Lv J, Mao A, Zhang Y, Tang Q, Li J. Programmable DNA Circuits for Flexible and Robust Exciton-Plasmon Interaction-Based Photoelectrochemical Biosensing. Anal Chem 2021; 93:11043-11051. [PMID: 34319082 DOI: 10.1021/acs.analchem.1c02488] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
DNA circuits as one of the dynamic nanostructures can be rationally designed and show amazing geometrical complexity and nanoscale accuracy, which are becoming increasingly attractive for DNA entropy-driven amplifier design. Herein, a novel and elegant exciton-plasmon interaction (EPI)-based photoelectrochemical (PEC) biosensor was developed with the assistance of a programmable entropy-driven DNA amplifier and superparamagnetic nanostructures. Low-abundance miRNA-let-7a as a model can efficiently initiate the operation of the entropy-driven DNA amplifier, and the released output DNAs can open the partially hybridized double-stranded DNA anchored on Fe3O4@SiO2 particles. The liberated Au nanoparticles (NPs)-cDNA can completely hybridize with CdSe/ZnS quantum dots (QDs)-cDNA-1 and result in proportionally decreased photocurrent of CdSe/ZnS QDs-cDNA-1. This unique entropy-driven amplification strategy is beneficial for reducing the reversibility of each step reaction, enables the base sequence invariant and the reaction efficiency improvement, and exhibits high thermal stability and specificity as well as flexible design. These features grant the PEC biosensor with ultrasensitivity and high selectivity. Also, instead of solid-liquid interface assembly for conventional EPI-based PEC biosensors, herein, DNA hybridization in the solution phase enables the improved hybridization efficiency and sensitivity. In addition, superparamagnetic Fe3O4@SiO2 particles further ensure the enhancement of the selectivity and reliability of the as-designed PEC biosensor. Particularly, this single-step electrode modification procedure evidently improves the electrode fabrication efficiency, reproducibility, and stability.
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Affiliation(s)
- Hongbo Li
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Ye Cao
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Tianyu Wu
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Yansong Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Zhaoting Zheng
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Jingchun Lv
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Airong Mao
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Yuye Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Qin Tang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
| | - Jing Li
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, P. R. China
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14
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Homogeneous photoelectrochemical biosensor for microRNA based on target-responsive hydrogel coupled with exonuclease III and nicking endonuclease Nb.BbvCI assistant cascaded amplification strategy. Mikrochim Acta 2021; 188:267. [PMID: 34296354 DOI: 10.1007/s00604-021-04935-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/09/2021] [Indexed: 10/25/2022]
Abstract
MicroRNAs can serve as biomarkers for many cancers, so it is significant to develop simple and sensitive strategies for microRNAs detection. Photoelectrochemical (PEC) detection has the advantages of simple equipment and high sensitivity. But in conventional PEC DNA sensors, tedious immobilization procedures of photoactive materials and capture probes on electrode surfaces are inevitable. To overcome those limitations, a homogeneous PEC biosensor based on target-responsive hydrogels has been developed (miRNA-155 has been chosen as a model target). PEC signal molecules (TiO2 nanoparticles, TiO2 NPs) were embedded in DNA hydrogels formed by hyaluronic acid sodium salt, amine-modified DNA double strands, and polyethylenimine rich in amine groups. In the presence of the target, DNA double strands in hydrogel were nicked by endonuclease and TiO2 NPs were released to the supernate and a high PEC response was obtained when collecting the supernate for PEC test, while almost no TiO2 NPs released in the absence of the target. Thanks to the exonuclease III and nicking endonuclease Nb.BbvCI-assisted cascaded amplification strategy, the proposed biosensor exhibits high sensitivity toward miRNA-155 with a low detection limit of 0.41 fM and a wide linear range from 1.0 fM to 100 pM. Since this method circumvents tedious electrode modification procedures, the proposed technique exhibits the advantages of simplicity and good reproducibility. Moreover, the prepared hydrogels have outstanding storage stability, so that they can be prepared in advance and shorten detection time. This biosensing platform provides a versatile strategy for the construction of homogeneous PEC biosensors for the detection of diverse targets. Photoelectrochemical detection techniques have been coupled with controlled release system to develop an immobilization-free microRNA biosensor. High sensitivity has been realized based on cascaded signal amplification strategy, and the proposed biosensor has been applied to detect the target in real sample with satisfied results. Since no tedious electrode modifications, the proposed homogeneous PEC sensor exhibits high reproducibility and good stability.
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15
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Chen D, Zou X, Dong F, Zhen C, Xiao D, Wang X, Wu Q, Cao Y, Tu J. Donor-Acceptor Compensated ZnO Semiconductor for Photoelectrochemical Biosensors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33006-33014. [PMID: 34232630 DOI: 10.1021/acsami.1c07499] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hindering the recombination of a photogenerated carrier is a crucial method to enhance the photoelectrochemical performance of ZnO due to its high exciton binding energy. Herein, the intramolecular donor-acceptor compensated semiconductor ZnO (I-D/A ZnO), introducing C dopants and oxygen vacancies, was prepared with the assistance of ascorbic acid (AA). According to the DFT calculations, the asymmetry DOS could lead to the longer carrier lifetime and the smaller electron transfer resistance. Then, the photoelectrochemical biosensor toward glucose was regarded as a model to discuss the application of ZnO in biosensors. As a result, the biosensor based on I-D/A ZnO showed good performance with high sensitivity, low limit of detection, and fine anti-interference, meaning that I-D/A ZnO is a promising semiconductor for photoelectrochemical biosensors.
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Affiliation(s)
- Delun Chen
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Xue Zou
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Fan Dong
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Chao Zhen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Dan Xiao
- Key Laboratory of Green and Technology, Ministry of Education, College of Chemistry and College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaohong Wang
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Qiang Wu
- School of Tropical Medicine and Laboratory Medicine, MOE Key Laboratory of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Yang Cao
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
- Key Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Jinchun Tu
- Key Laboratory of Advanced Materials of Tropical Island Resources, State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
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Xu J, Jiang R, He H, Ma C, Tang Z. Recent advances on G-quadruplex for biosensing, bioimaging and cancer therapy. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116257] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Sfragano PS, Pillozzi S, Palchetti I. Electrochemical and PEC platforms for miRNA and other epigenetic markers of cancer diseases: Recent updates. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.106929] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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18
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Liposome encapsulated electron donor strategy for signal-on CYFRA 21-1 photoelectrochemical analysis. Mikrochim Acta 2021; 188:75. [PMID: 33558974 DOI: 10.1007/s00604-021-04721-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/19/2021] [Indexed: 01/23/2023]
Abstract
A novel electron donor controlled-release system is proposed based on liposome encapsulated L-cysteine for the sensitive determination of cytokeratin 19 fragment 21-1 (CYFRA 21-1). On the one hand, a defective TiO2 modified with methylene blue was employed as a photoactive platform which exhibited a high photoelectrochemical (PEC) response owing to the introduction of oxygen vacancies and the high photosensitivity of the dye. On the other hand, L-cysteine as the sacrificial electron donor was encapsulated in the vesicles of liposomes, and this composite was used as the signal amplification factor, which is labeled on the secondary antibody of CYFRA 21-1 to further improve the photocurrent sensitivity. The excellent electron transfer path in photoactive materials coupled with the skilful electron donor controlled-release system, contributed to the sensitive PEC analysis of CYFRA 21-1 underoptimum conditions. The PEC immunoassay showed a linear current response in the range 0.0001-100 ng/mL with a detection limitof 37 fg/mL. Enhanced stability and satisfactory reproducibility were also achieved. The proposed concept provides a novel signal-on strategy for the sensitive detection of other cancer markers in the electrochemical sensing field.
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19
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Liu X, Zhao Y, Li F. Nucleic acid-functionalized metal-organic framework for ultrasensitive immobilization-free photoelectrochemical biosensing. Biosens Bioelectron 2021; 173:112832. [DOI: 10.1016/j.bios.2020.112832] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/06/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022]
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20
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Zheng AQ, Zhao CX, Wang XJ, Shu Y, Wang JH. Simultaneous detection and speciation of mono- and di-valent copper ions with a dual-channel fluorescent nanoprobe. Chem Commun (Camb) 2020; 56:15337-15340. [PMID: 33231237 DOI: 10.1039/d0cc06750d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Redox cyclings between mono-/di-valent copper oxidation states occur in electron transfer reactions that underlie their biological functions. We report herein a dual channel fluorescent nanoprobe for the detection of mono- and di-valent copper ions. The probe, BSA-CDs@RBH/BCS, is designed by decorating carbon dots (CDs) on BSA encapsulated rhodamine hydrazide (RBH) and conjugating with bathocuproine disulfonate (BCS). Cu2+ catalyzes the hydrolysis of RBH, and the formed rhodamine B (RhB) shows emission at λex/λem = 360/575 nm which ensures Cu2+ detection. BSA reduces Cu2+ to Cu+ and the BCS-Cu+ chelate shows emission at λex/λem 360/450 nm which ensures Cu+ assay. Thus, the dual-channel fluorescence enables speciation of Cu2+ and Cu+.
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Affiliation(s)
- An-Qi Zheng
- Research Center for Analytical Sciences, Department of Chemistry, Northeastern University, Box 332, Shenyang 110819, China.
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21
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Homogeneous electrochemical biosensor for microRNA based on enzyme-driven cascaded signal amplification strategy. Anal Bioanal Chem 2020; 413:4681-4688. [PMID: 33185746 DOI: 10.1007/s00216-020-03027-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 10/14/2020] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
Infectious diseases are a long-standing and severe global public health problem. The rapid diagnosis of infectious diseases is an urgent need to solve this problem. MicroRNA (miRNA) plays an important role in the intervention of some infectious diseases and is expected to become a potential biomarker for the diagnosis and prognosis of infectious diseases. It is of great significance to develop rapid and sensitive methods for detecting miRNA for effective control of infectious diseases. In this study, a simple and highly sensitive homogeneous electrochemical method for microRNAs using enzyme-driven cascaded signal amplification has been developed. In the presence of target miRNA, the reaction system produced plenty of MB-labeled single-nucleotide fragments (MB-MF) containing a few negative charges, which can diffuse to the negative surface of the ITO electrode easily, so an obvious electrochemical signal enhancement was obtained. Without the target, MB-HP contains a relatively large amount of negative charges due to the phosphates on the DNA chain, which cannot be digested by the enzyme and cannot diffuse freely to the negatively charged ITO electrode, so only a small signal was detected. The enhanced electrochemical response has a linear relationship with the logarithm of miRNA concentration in the range of 10 fM to 10 nM and the limit of detection as low as 3.0 fM. Furthermore, the proposed strategy showed the capability of discriminating single-base mismatch and performed eligibly in the analysis of miRNA in cell lysates, exhibiting great potential for disease diagnosis and biomedical research. Graphical abstract.
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22
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Li F, Zhou Y, Yin H, Ai S. Recent advances on signal amplification strategies in photoelectrochemical sensing of microRNAs. Biosens Bioelectron 2020; 166:112476. [DOI: 10.1016/j.bios.2020.112476] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 01/23/2023]
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23
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Meng L, Liu M, Xiao K, Zhang X, Du C, Chen J. Sensitive photoelectrochemical assay of Pb 2+ based on DNAzyme-induced disassembly of the "Z-scheme" TiO 2/Au/CdS QDs system. Chem Commun (Camb) 2020; 56:8261-8264. [PMID: 32568311 DOI: 10.1039/d0cc03149f] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, based on DNAzyme-induced disassembly of the "Z-scheme" TiO2/Au/CdS QDs system, a facile and sensitive photoelectrochemical biosensor was developed for lead ion assay and a low detection limit of 0.13 pM was obtained.
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Affiliation(s)
- Leixia Meng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
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