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Chen X, Shi W, Li S, Li H, Han J, Guo DY, Chen L, Pan Q. In situ synthesis of luminescent dsDNA-Cu NCs stained with a dsDNA-lighted fluorophore for rapid and stable detection of histamine in food. Int J Biol Macromol 2024:134479. [PMID: 39102918 DOI: 10.1016/j.ijbiomac.2024.134479] [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: 04/29/2024] [Revised: 07/16/2024] [Accepted: 08/02/2024] [Indexed: 08/07/2024]
Abstract
Poisonous histamine is accumulated in stale meat and fermented foods. The rapid and stable detection of histamine is essential for food safety. Herein, a ratiometric fluorometric method for histamine detection was designed through in situ preparing double-stranded DNA‑copper nanoclusters (dsDNA-Cu NCs) stained with 4',6-diamidino-2-phenylindole (DAPI). dsDNA-Cu NCs with red emission were rapidly synthesized via mixing Cu2+, ascorbate and dsDNA at room temperature for 5 min. When DAPI was added during preparation, DAPI coordinated with the Cu element accompanied by the quenched red emission of dsDNA-Cu NCs, and DAPI bound to dsDNA together with the enhanced blue emission of DAPI. Upon adding DAPI and histamine simultaneously, the coordination of histamine with the Cu element further decreased the red emission of dsDNA-Cu NCs, and drove the movement of DAPI from the Cu element to dsDNA along with the enhanced blue emission of DAPI. Significantly, ratiometric fluorescence was insensitive to variations in instrument and environment, causing stable measurement. Meanwhile, in situ synthesis integrated probe preparation with analyte detection, reducing time consumption. Additionally, this method quantified histamine in the concentration range of 7-50 μM with a detection limit of 3.6 μM. It was applied to determining histamine in food with satisfactory accuracy and precision.
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Affiliation(s)
- Xi Chen
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Wenhui Shi
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Shiyu Li
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Huihui Li
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China; State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Jingxuan Han
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Dong-Yu Guo
- Department of Clinical Laboratory, Xiamen Huli Guoyu Clinic, Co., Ltd., Xiamen 361000, PR China.
| | - Linan Chen
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Qinhe Pan
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China.
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2
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Fan B, Wang Q, Wang S, Gao Y, Liang Y, Pan J, Fu X, Li L, Meng W. Label-Free Ratiometric Homogeneous Electrochemical Strategy Based on Exonuclease III-Aided Signal Amplification for Facile and Rapid Detection of miR-378. Int J Anal Chem 2024; 2024:8368987. [PMID: 38807657 PMCID: PMC11132827 DOI: 10.1155/2024/8368987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/24/2024] [Accepted: 05/06/2024] [Indexed: 05/30/2024] Open
Abstract
MiR-378 is abnormally expressed in various cancers, such as hepatocellular carcinoma, renal cell carcinoma, and nonsmall cell lung cancer. Here, we developed a label- and immobilization-free ratiometric homogeneous electrochemical strategy based on exonuclease III (Exo III) for the facile and rapid determination of miR-378. Two 3'-protruding hairpin DNA probes (HPs) are designed in this strategy. Doxorubicin (DOX) and potassium ferrocyanide (Fe2+) were used as label-free probes to produce a response signal (IDOX) and a reference signal (IFe2+) in the solution phase. When no target was present in the solution, the HP was stable, most of the DOX was intercalated in the stem of the HP, and the diffusion rate of DOX was significantly reduced, resulting in reduced electrochemical signal response. When miR-378 was present, double-cycle signal amplification triggered by Exo III cleavage was initiated, ultimately disrupting the hairpin structures of HP1 and HP2 and releasing a large amount of DOX into the solution, yielding a stronger electrochemical signal, which was low to 50 pM. This detection possesses excellent selectivity, demonstrating high application potential in biological systems, and offers simple and low-cost electrochemical detection for miR-378.
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Affiliation(s)
- Bingyuan Fan
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
| | - Qian Wang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
- Nanpi No. 1 Middle School, Cangzhou 061599, China
| | - Shan Wang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
| | - Yahui Gao
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
| | - Yan Liang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
| | - Jinru Pan
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
| | - Xinrui Fu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Li Li
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Wei Meng
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, China
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3
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Wang Y, Chang Z, Ouyang M, Wang K, Gao X, Tang B. Advancing Nonsmall Cell Lung Cancer Diagnosis Accuracy via Dual Detection Fluorescent Nanoprobes. Anal Chem 2024; 96:6812-6818. [PMID: 38634576 DOI: 10.1021/acs.analchem.4c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Among the primary threats to human health worldwide, nonsmall cell lung cancer (NSCLC) remains a significant factor and is a leading cause of cancer-related deaths. Due to subtle early symptoms, NSCLC patients are diagnosed at advanced stages, resulting in low survival rates. Herein, novel Au-Se bond nanoprobes (NPs) designed for the specific detection of Calpain-2 (CAPN2) and Human Neutrophil Elastase (HNE), pivotal biomarkers in NSCLC, were developed. The NPs demonstrated exceptional specificity and sensitivity toward CAPN2 and HNE, enabling dual-color fluorescence imaging to distinguish between NSCLC cells and normal lung cells effectively. The NPs' performance was consistent across a wide pH range (6.2 to 8.0), and it exhibited remarkable resistance to biological thiol interference, indicating its robustness in complex physiological environments. These findings suggest the nanoprobe is a promising tool for early NSCLC diagnosis, offering a novel approach for enhancing the accuracy of cancer detection.
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Affiliation(s)
- Yinian Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Zixuan Chang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Mingyi Ouyang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Keyi Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Edu-cation, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
- Laoshan Laboratory, 168 Wenhai Middle Rd, Aoshanwei Jimo, Qingdao ,Shandong266237, P. R. China
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4
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Chang Z, Jia M, Liu G, Yang H, Wang Y, Ouyang M, Gao X, Tang B. Dual-targets fluorescent nanoprobe for precise subtyping of lung cancer. Chem Commun (Camb) 2024; 60:2078-2081. [PMID: 38293810 DOI: 10.1039/d3cc05740b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
A Au-Se bond-based nanoprobe using 3',3-diselenopropionic acid to simultaneously link response chains for Pro-GRP protein and Cyfra21-1 was developed. Early diagnosis and subtyping of lung cancer can be achieved based on the nanoprobes' differential response of the probes to the two targets in lung cancer patients' serum.
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Affiliation(s)
- Zixuan Chang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Ming Jia
- Department of Cancer Center, The Secondary Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, P. R. China
| | - Gao Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Houbang Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Yinian Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Mingyi Ouyang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
- Laoshan Laboratory, 168 Wenhai Middle Rd, Aoshanwei Jimo, Qingdao 266237, P. R. China
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Zhuo C, Yu D, Cui J, Song Z, Tang Q, Liao X, Liu Z, Xin N, Lou L, Gao F. Proximity hybridization induced bipedal DNA walker and rolling circle amplification for label-free electrochemical detection of apolipoprotein A4. Bioelectrochemistry 2024; 155:108596. [PMID: 37939432 DOI: 10.1016/j.bioelechem.2023.108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/10/2023]
Abstract
Apolipoprotein A4 (Apo-A4) is considered as a prospective molecular biomarker for diagnosis of depression due to its neurosynaptic toxicity. We develop a proximity hybridization-induced DNAzyme-driven bipedal DNA walker strategy for Apo-A4 quantification based on rolling circle amplification (RCA) triggered by poly adenine binding to Ag nanoparticles (AgNPs). With the help of DNAzyme, the free-running bipedal DNA walker can quickly and sequentially shear a molecular beacon that acts as a primer to initiate the RCA process, producing a large number of long DNA strands containing numerous adenines. The long repetitive adenine strands then absorb large amounts of AgNPs on the electrode interface, which is then electrochemically stripped of the AgNPs. The method has a linear detection range of 0.001 ∼ 100 ng mL-1 and a detection limit of 0.46 pg mL-1. The presented detection strategy is label-free, which allows high sensitivity and selectivity for detection of a wide range of protein targets by corresponding DNA-based affinity probes, which have potential applications in bioanalysis.
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Affiliation(s)
- Chenyi Zhuo
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Dehong Yu
- The Affiliated Pizhou Hospital of Xuzhou Medical University, Jiangsu 221399, China
| | - Jiuying Cui
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China; West Guangxi Key Laboratory for Prevention and Treatment of High-incidence Diseases, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Zichun Song
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China; West Guangxi Key Laboratory for Prevention and Treatment of High-incidence Diseases, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Qianli Tang
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China; West Guangxi Key Laboratory for Prevention and Treatment of High-incidence Diseases, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Xianjiu Liao
- West Guangxi Key Laboratory for Prevention and Treatment of High-incidence Diseases, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
| | - Zhao Liu
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China
| | - Ning Xin
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China
| | - Lu Lou
- Department of Urology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Xuzhou, China.
| | - Fenglei Gao
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China.
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6
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Li J, Qin J, Du F, Meng W, Tang D, Huang Y, Tang J. Multiorbital DNA walker nanoprobe for portable photothermal detection based on H 2S etching of cubic Prussian blue. Mikrochim Acta 2023; 190:382. [PMID: 37697070 DOI: 10.1007/s00604-023-05957-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/13/2023] [Indexed: 09/13/2023]
Abstract
In the developed assay, multiorbital 3D DNA walker (MO DNA walker) was applied as signal amplified protocol for enhancing the detection signal of the photothermal biosensor, which was designed for sensitive detection of miRNA based on the H2S triggered conversation of photothermal reagent. When the target molecule is present, the DNA walking strand was released and then hybridize with track strands. The landing of walking particles (WPT) on the tracking particles (TPT) promotes the relative movement of the WPT around TPT, thus releasing large amount of horseradish peroxidase (HRP) with the aid of DNAzyme. After reacting with Na2S2O3 and H2O2, multiple H2S can be generated in situ based on the catalytic ability of HRP. Meanwhile, cubic Prussian blue (CPB) was synthesized and exhibited superior photothermal response, which can be served as efficient photothermal reagent and H2S responsive acceptor. Significantly, the photothermal signal of CPB could be obviously reduced after challenged with H2S ascribed to synchronous reaction between the ferric ion (Fe3+) and H2S. The improved walking area and freedom enable significant signal amplification, enhancing the biosensor's performance. Under ideal circumstances, the proposed photothermal assay demonstrated excellent performance for determination of miRNA-21.
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Affiliation(s)
- Jinjin Li
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Jiao Qin
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Fan Du
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Wenqin Meng
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (Ministry of Education of China and Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou, 350108, People's Republic of China
| | - Yunhong Huang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China.
| | - Juan Tang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Department of Chemistry and Chemical Engineering, National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, People's Republic of China.
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7
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Wang Z, Gao N, Chen Z, Gao F, Wang Q. In-Situ Fabrication of Electroactive Cu 2+-Trithiocyanate Complex and Its Application for Label-Free Electrochemical Aptasensing of Thrombin. BIOSENSORS 2023; 13:bios13050532. [PMID: 37232893 DOI: 10.3390/bios13050532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023]
Abstract
The preparation of an electroactive matrix for the immobilization of the bioprobe shows great promise to construct the label-free biosensors. Herein, the electroactive metal-organic coordination polymer has been in-situ prepared by pre-assembly of a layer of trithiocynate (TCY) on a gold electrode (AuE) through Au-S bond, followed by repetitive soaking in Cu(NO3)2 solution and TCY solutions. Then the gold nanoparticles (AuNPs) and the thiolated thrombin aptamers were successively assembled on the electrode surface, and thus the electrochemical electroactive aptasensing layer for thrombin was achieved. The preparation process of the biosensor was characterized by an atomic force microscope (AFM), attenuated total reflection-Fourier transform infrared (ATR-FTIR), and electrochemical methods. Electrochemical sensing assays showed that the formation of the aptamer-thrombin complex changed the microenvironment and the electro-conductivity of the electrode interface, causing the electrochemical signal suppression of the TCY-Cu2+ polymer. Additionally, the target thrombin can be label-free analyzed. Under optimal conditions, the aptasensor can detect thrombin in the concentration range from 1.0 fM to 1.0 μM, with a detection limit of 0.26 fM. The spiked recovery assay showed that the recovery of the thrombin in human serum samples was 97.2-103%, showing that the biosensor is feasible for biomolecule analysis in a complex sample.
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Affiliation(s)
- Zehao Wang
- College of Chemistry, Chemical Engineering and Environment Science, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
| | - Ningning Gao
- College of Chemistry, Chemical Engineering and Environment Science, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
| | - Zhenmao Chen
- College of Chemistry, Chemical Engineering and Environment Science, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
| | - Feng Gao
- College of Chemistry, Chemical Engineering and Environment Science, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
| | - Qingxiang Wang
- College of Chemistry, Chemical Engineering and Environment Science, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China
- Anhui Laboratory of Molecule-Based Materials, Anhui Normal University, Wuhu 241000, China
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8
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Li Z, Xu H, Zhang Z, Miao X. DNA tetrahedral scaffold-corbelled 3D DNAzyme walker for electrochemiluminescent aflatoxin B 1 detection. Food Chem 2023; 407:135049. [PMID: 36493494 DOI: 10.1016/j.foodchem.2022.135049] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022]
Abstract
The reaction efficiency of surface-based DNA walker can directly affect the properties of a biosensor. Herein, three-dimensional (3D) DNAzyme walker were first fixed on the top of DNA tetrahedral scaffold to improve the immobilization efficiency. Ferrocene (Fc) that labeled at substrate strand ends effectively quenched the electrochemiluminescence (ECL) signal of Ru(bpy)2(cpaphen)2+, yielding the sensor in a "signal-off" state. Upon the addition of aflatoxin B1 (AFB1), 3D DNAzyme walker was activated and fueled by Na+, accordingly releasing Fc and recovering the ECL signal of Ru(bpy)2(cpaphen)2+. Due to the high movement efficiency of such 3D DNAzyme walker, ultrasensitive detection of AFB1 was achieved in the range of 1.0 fg mL-1-10 ng mL-1, with a detection limit of 0.58 fg mL-1. Moreover, satisfactory results were obtained while detecting AFB1 in corn and peanut samples, suggesting it has a potential application in food safety analysis.
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Affiliation(s)
- Zongbing Li
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Huanwen Xu
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Zifeng Zhang
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, PR China.
| | - Xiangmin Miao
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, PR China.
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9
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DNAzyme-driven bipedal DNA walker triggered to hybridize silver nanoparticle probes for electrochemical detection of amyloid-β oligomer. Anal Chim Acta 2023; 1246:340889. [PMID: 36764775 DOI: 10.1016/j.aca.2023.340889] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023]
Abstract
Amyloid-β oligomer has been considered as a promising molecular biomarker for the diagnosis of Alzheimer's disease due to their significant neural synapse toxicity. Therefore, it is essential to create an easy approach for the selective detection of Amyloid-β oligomer that has high sensitivity and cheap cost. In this work, we developed an innovative enzyme-free electrochemical aptasensor based on the DNAzyme-driven DNA bipedal walker tactics for sensing Amyloid-β oligomer. Bipedal DNA walkers demonstrate a wider walking region, better walking kinetics, and higher amplification effectiveness than typical DNA walkers. The Mg2+-dependent DNAzyme drove the DNA walker, and the binding-induced DNA walker can sequentially shear MBs and form MB fragment structure. Finally, the detection probes modified AgNPs hybridized with the MB fragment structure, resulting in the multiplication of AgNPs on the electrode surface. Electrochemical stripping of AgNPs was used to test the performance of the obtained electrochemical sensor. In particular, a low detection limit of 5.94 fM and a wide linear range of 0.01 pM-0.1 nM were attained. The detection of Amyloid-β oligomer in human serum was then carried out using this bipedal DNA walker biosensor, which shown good selectivity and outstanding reproducibility, indicating its usefulness in bioanalysis.
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10
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Wei J, Ge K, Gong Y, Li L, Tang Q, Liao X, Zhang G, Gao F. DNAzyme-driven bipedal DNA walker for label-free and signal-on electrochemical detection of amyloid-β oligomer. Int J Biol Macromol 2023; 228:234-241. [PMID: 36566812 DOI: 10.1016/j.ijbiomac.2022.12.216] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 12/08/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
As a common technique for detecting AβO, the enzyme-linked immunosorbent assay (ELISA) method is time-consuming, high in cost, and poor in stability. Therefore, it is necessary to develop a highly sensitive, method-simple and low-cost method for the selective detection of AβO. Here, we created a novel signal-on and label-free electrochemical aptamer sensor for the detection of AβO based on a DNAzyme-driven DNA bipedal walking strategy. Compared with common DNA walkers, bipedal DNA walkers exhibit larger walking areas and faster walking kinetics, and provide higher amplification efficiency. The DNAwalker is powered by an Mg2+-dependent DNAzyme, and the binding-induced DNAwalker continuously clamps the MB, unlocking several active G-quadruplex-forming sequences. These G-quadruplexes can be further combined by hemin to generate a G-quadruplex/heme complex, resulting in an amperometric signal, resulting in a broad proportional band from 0.1 pM to 1 nM and an excellent detection range of 46 fM. A bipedal DNA walker aptamer sensor can detect human serum AβO with remarkable specificity, high reproducibility and practical application value.
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Affiliation(s)
- Jihua Wei
- Guangxi Key Laboratory of Basic and Translational Research of Bone and Joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, 533000 Baise, China
| | - Kezhen Ge
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China
| | - Yuanxun Gong
- Guangxi Key Laboratory of Basic and Translational Research of Bone and Joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, 533000 Baise, China
| | - Liqing Li
- Guangxi Key Laboratory of Basic and Translational Research of Bone and Joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, 533000 Baise, China
| | - Qianli Tang
- Guangxi Key Laboratory of Basic and Translational Research of Bone and Joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, 533000 Baise, China
| | - Xianjiu Liao
- West Guangxi Key Laboratory for Prevention and Treatment of High-incidence Diseases, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
| | - Guanqun Zhang
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China; Department of Neurology, Xuzhou Central Hospital, 221004 Xuzhou, China.
| | - Fenglei Gao
- School of Pharmacy, Xuzhou Medical University, 221004 Xuzhou, China.
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11
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Recent Progresses in Development of Biosensors for Thrombin Detection. BIOSENSORS 2022; 12:bios12090767. [PMID: 36140153 PMCID: PMC9496736 DOI: 10.3390/bios12090767] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/10/2022] [Accepted: 09/13/2022] [Indexed: 12/11/2022]
Abstract
Thrombin is a serine protease with an essential role in homeostasis and blood coagulation. During vascular injuries, thrombin is generated from prothrombin, a plasma protein, to polymerize fibrinogen molecules into fibrin filaments. Moreover, thrombin is a potent stimulant for platelet activation, which causes blood clots to prevent bleeding. The rapid and sensitive detection of thrombin is important in biological analysis and clinical diagnosis. Hence, various biosensors for thrombin measurement have been developed. Biosensors are devices that produce a quantifiable signal from biological interactions in proportion to the concentration of a target analyte. An aptasensor is a biosensor in which a DNA or RNA aptamer has been used as a biological recognition element and can identify target molecules with a high degree of sensitivity and affinity. Designed biosensors could provide effective methods for the highly selective and specific detection of thrombin. This review has attempted to provide an update of the various biosensors proposed in the literature, which have been designed for thrombin detection. According to their various transducers, the constructions and compositions, the performance, benefits, and restrictions of each are summarized and compared.
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12
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Zhang J, Fan Y, Li J, Huang B, Wen H, Ren J. Cascade signal enhancement by integrating DNA walking and RCA reaction-assisted "silver-link" crossing electrode for ultrasensitive electrochemical detection of Staphylococcus aureus. Biosens Bioelectron 2022; 217:114716. [PMID: 36126557 DOI: 10.1016/j.bios.2022.114716] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/28/2022] [Accepted: 09/10/2022] [Indexed: 11/17/2022]
Abstract
The key factor to control the incidence rate of diseases caused by bacteria is rapid detection and early diagnosis. Herein, we proposed a new electrochemical bacterial sensor by coupling DNA walking and rolling circle amplification (RCA) reaction-assisted "silver-link" crossing electrode. Staphylococcus aureus (S. aureus) was detected using this proof-of concept strategy. Aptamer/DNA walker and auxiliary sequence (AS)/RCA reaction probe (RP) duplexes were modified on the electrode surface. The binding of S. aureus with its aptamer caused the disintegration of aptamer/DNA walker and released DNA walker. With the help of Exo III, DNA walker moved along the electrode surface and AS in AS/RP duplex was continuously digested to release RP. By introducing phi29 DNA polymerase, RCA reaction was performed using RP as the reaction primer to form long single-strand RCA extension products between the electrodes. The "silver-link" crossing electrode was formed by metallization of "gene-link", significant conductivity was thus acquired for bacteria detection. The limit of detection (LOD) was 10 CFU/mL and detection time was 2 h. The proposed sensor has high efficiency, good stability and low background signal, human serum and milk samples were successfully detected, which emerged a promising potential in the food monitoring and clinical diagnosis.
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Affiliation(s)
- Jialin Zhang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
| | - Yaqi Fan
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Jinhui Li
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Bin Huang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Herui Wen
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China
| | - Jiali Ren
- Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Changsha, 410004, PR China.
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13
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Zhang B, Lv L, Ma X, Xie L, Lin M, Chen H, He B. Au@ZnNi-MOF labeled electrochemical aptasensor for detection of enrofloxacin based on AuPt@h-CeO2/MoS2 and DNAzyme-driven DNA walker triple amplification signal strategy. Biosens Bioelectron 2022; 210:114296. [DOI: 10.1016/j.bios.2022.114296] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/11/2022] [Accepted: 04/18/2022] [Indexed: 11/30/2022]
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14
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Liu D, Jia F, Wei Y, Li Y, Meng S, You T. Programmable analytical feature of ratiometric electrochemical biosensor by alternating the binding site of ferrocene to
DNA
duplex for the detection of aflatoxin
B1. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Dong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Fan Jia
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Ya Wei
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Yuye Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Shuyun Meng
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering Jiangsu University Zhenjiang Jiangsu 212013 China
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15
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Catalytic hairpin assembly assisted target-dependent DNAzyme nanosystem coupled with AgPt@Thi for the detection of lead ion. Anal Chim Acta 2022; 1205:339735. [DOI: 10.1016/j.aca.2022.339735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 11/19/2022]
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16
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Karimzadeh Z, Mahmoudpour M, Guardia MDL, Nazhad Dolatabadi JE, Jouyban A. Aptamer-functionalized metal organic frameworks as an emerging nanoprobe in the food safety field: Promising development opportunities and translational challenges. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116622] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Chang Y, Xu S, Li Y, Hu W, Li H, Yuan R, Chai Y. DNA Three-Way Junction with Multiple Recognition Regions Mediated an Unconfined DNA Walker for Electrochemical Ultrasensitive Detection of miRNA-182-5p. Anal Chem 2021; 93:12981-12986. [PMID: 34515473 DOI: 10.1021/acs.analchem.1c02668] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this work, a DNA three-way junction (TWJ) with multiple recognition regions was intelligently engineered, which could be applied as an unconfined DNA walker with a rapid walking speed and high sensitivity for electrochemical detection of microRNA (miRNA-182-5p). Once the target miRNA was presented, the hairpins on TWJ could be successively opened to form an annular DNA walker, which could walk on the entire scope of the electrode surface without the confine for the length of DNA walker legs compared with the traditional DNA walker, greatly improving the walking efficiency. In addition, this DNA walker with multirecognition segments could obviously increase the local concentration of recognition sites, which significantly enhanced the detection speed and sensitivity. As a result, this proposed biosensor with annular DNA as a walker could dexterously achieve the ultrasensitive and fast detection of miRNA-182-5p from 0.1 fM to 1 nM with a detection limit of 31.13 aM. Meaningfully, this strategy explored an innovative path in the design of a new DNA walker nanostructure for accomplishing speedy and sensitive detection of biomarkers.
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Affiliation(s)
- Yuanyuan Chang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Sai Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yunrui Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Wenxi Hu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hang Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yaqin Chai
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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18
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Chen J, Zhu D, Huang T, Yang Z, Liu B, Sun M, Chen JX, Dai Z, Zou X. Isothermal Self-Primer EXPonential Amplification Reaction (SPEXPAR) for Highly Sensitive Detection of Single-Stranded Nucleic Acids and Proteins. Anal Chem 2021; 93:12707-12713. [PMID: 34491714 DOI: 10.1021/acs.analchem.1c02588] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Development of versatile sensing methods for sensitive and specific detection of clinically relevant nucleic acids and proteins is of great value for disease monitoring and diagnosis. In this work, we propose a novel isothermal Self-primer EXPonential Amplification Reaction (SPEXPAR) strategy based on a rationally engineered structure-switchable Metastable Hairpin template (MH-template). The MH-template initially keeps inactive with its self-primer overhanging a part of target recognition region to inhibit polymerization. The present targets can specifically compel the MH-template to transform into an "activate" conformation that primes a target-recyclable EXPAR. The method is simple and sensitive, can accurately and facilely detect long-chain single-stranded nucleic acids or proteins without the need of exogenous primer probes, and has a high amplification efficiency theoretically more than 2n. For a proof-of-concept demonstration, the SPEXPAR method was used to sensitively detect the characteristic sequence of the typical swine fever virus (CSFV) RNA and thrombin, as nucleic acid and protein models, with limits of detection down to 43 aM and 39 fM, respectively, and even the CSFV RNA in attenuated vaccine samples and thrombin in diluted serum samples. The SPEXPAR method may serve as a powerful technique for the biological research of single-stranded nucleic acids and proteins.
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Affiliation(s)
- Jun Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Daozhong Zhu
- Guangzhou Customs Technology Center, Guangzhou 510623, P. R. China
| | - Ting Huang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zizhong Yang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Birong Liu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Mengxu Sun
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jin-Xiang Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zong Dai
- Key Laboratory of Sensing Techno logy and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou 510006, P. R. China
| | - Xiaoyong Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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19
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Gao J, Hua X, Yuan R, Li Q, Xu W. Amplified electrochemical biosensing based on bienzymatic cascade catalysis confined in a functional DNA structure. Talanta 2021; 234:122643. [PMID: 34364452 DOI: 10.1016/j.talanta.2021.122643] [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: 05/08/2021] [Revised: 06/12/2021] [Accepted: 06/20/2021] [Indexed: 10/20/2022]
Abstract
Herein, an amplified and renewable electrochemical biosensor was developed via bienzymatic cascade catalysis of glucose oxidase (GOx) and horseradish peroxidase (HRP), which were confined in a functional Y-shaped DNA nanostructure oriented by a dual-thiol-ended hairpin probe (dSH-HP) with a paired stem as a rigid scaffold and unpaired loop as enclosed binding platform. For proof-of-concept assay of sequence-specific biomarker DNA related to Alzheimer's disease (aDNA), GOx and redox ferrocene-modified HRP (Fc@HRP) were chemically conjugated in two enzyme strands (GOx-ES1 and Fc@HRP-ES2), respectively. The repeated recycling of aDNA was powered by the displacement of GOx-ES1 by aDNA and exonuclease III (ExoIII)-assisted cleavage reaction for amplified output of numerous GOx-ES1 as dependent transducers, together with Fc@HRP-ES2 which was simultaneously hybridized with dSH-HP to assemble this DNA structure. Rationally, the bienzymatic cascade catalysis was motivated through GOx-catalyzed glucose oxidization to in situ generate hydrogen peroxide (H2O2) and overlapped HRP-catalyzed H2O2 decomposition to promote the electron transfer, producing significantly enhanced electrochemical signal of Fc with an ultrahigh sensitivity down to 0.22 fM of aDNA. Benefited from the unique design of dSH-HP-oriented bienzymatic cascades, this one-step strategy without non-specific blockers passivation was simple and renewable, and would pave a promising avenue for sensitive electrochemical assay of biomolecules.
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Affiliation(s)
- Jiaxi Gao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Xiaoyu Hua
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Qiong Li
- College of Geophysics, Chengdu University of Technology, Chengdu, 610059, China.
| | - Wenju Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
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20
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Ning Z, Chen M, Wu G, Zhang Y, Shen Y. Recent advances of functional nucleic acids-based electrochemiluminescent sensing. Biosens Bioelectron 2021; 191:113462. [PMID: 34198172 DOI: 10.1016/j.bios.2021.113462] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/12/2021] [Accepted: 06/21/2021] [Indexed: 12/19/2022]
Abstract
Electroluminescence (ECL) has been used in extensive applications ranging from bioanalysis to clinical diagnosis owing to its simple device requirement, low background, high sensitivity, and wide dynamic range. Nucleic acid is a significant theme in ECL bioanalysis. The inherent versatile selective molecular recognition of nucleic acids and their programmable self-assembly make it desirable for the robust construction of nanostructures. Benefiting from their unique structures and physiochemical properties, ECL biosensing based on nucleic acids has experienced rapid growth. This review focuses on recent applications of nucleic acids in ECL sensing systems, particularly concerning the employment of nucleic acids as molecular recognition elements, signal amplification units, and sensing interface schemes. In the end, an outlook of nucleic acid-based ECL biosensing will be provided for future developments and directions. We envision that nucleic acids, which act as an essential component for both bioanalysis and clinical diagnosis, will provide a new thinking model and driving force for developing next-generation sensing systems.
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Affiliation(s)
- Zhenqiang Ning
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210009, China
| | - Mengyuan Chen
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210009, China
| | - Guoqiu Wu
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210009, China; Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, China; Jiangsu Provincial Key Laboratory of Critical Care Medicine, Southeast University, Nanjing, 210009, China
| | - Yuanjian Zhang
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210009, China
| | - Yanfei Shen
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210009, China; Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009, China; Jiangsu Provincial Key Laboratory of Critical Care Medicine, Southeast University, Nanjing, 210009, China.
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21
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Feng C, Zhang C, Guo J, Li G, Ye B, Zou L. Novel preparation method of bipedal DNA walker based on hybridization chain reaction for ultrasensitive DNA biosensing. Anal Chim Acta 2021; 1176:338781. [PMID: 34399897 DOI: 10.1016/j.aca.2021.338781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/05/2021] [Accepted: 06/15/2021] [Indexed: 11/27/2022]
Abstract
In this work, a novel strategy for preparation of bipedal DNA walker (BDW) based on hybridization chain reaction (HCR) with the assistance of Exonuclease III (Exo III) was proposed. Based on this strategy, an electrochemical biosensor was constructed to achieve sensitive detection of CYFRA 21-1 DNA. Firstly, target recognition and circulation were achieved through a one-step catalytic hairpin assembly (CHA) reaction. For further amplification, hybridization chain reaction (HCR) was employed to form duplex-stranded DNA (dsDNA) nanostructure in homogeneous solution. In particular, the elongated single strand of the hairpin DNA for HCR was designed as the Mg2+ DNAzyme sequence. With the assistance of Exo III, dsDNA nanostructure can be digested and transformed into large amounts of BDW. These BDW can cleave the signal probe driven by Mg2+, which was modified on the electrode surface and thus achieved "signal-off" detection of target. This BDW preparation method based on HCR with the digestion of Exo III converted one target input into large amount of BDW. Coupled with the walking cleavage of BDW, a series of cascade amplification endowed high sensitivity with this biosensor and realized ultrasensitive detection of target DNA with the detection limit as low as 3.01 aM.
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Affiliation(s)
- Changrui Feng
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Chi Zhang
- Department of Orthopedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450001, PR China
| | - Jiaxin Guo
- 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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22
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A dual-model "on-super off" photoelectrochemical/ratiometric electrochemical biosensor for ultrasensitive and accurate detection of microRNA-224. Biosens Bioelectron 2021; 188:113337. [PMID: 34030091 DOI: 10.1016/j.bios.2021.113337] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/22/2021] [Accepted: 05/11/2021] [Indexed: 11/23/2022]
Abstract
A dual-model "on-super off" photoelectrochemical (PEC)/ratiometric electrochemical (EC) biosensor based on signal enhancing and quenching combining three-dimensional (3D) DNA walker strategy was designed for the ultrasensitive and accurate detection of microRNA-224 (miRNA-224). The "signal on" PEC state was achieved by methylene blue labeled hairpin DNA (MB-DNA) for sensitizing CdS QDs. Then numerous transformational ferrocene labeled DNAs (Fc-DNAs) converted by target-induced 3D DNA walker amplification with the help of Ag nanocubes (NCs) label DNA (Ag-DNA) were introduced to open hairpin MB-DNA. Such configuration change would relocate the sensitizer MB and the quencher Fc, whereas energy transfer placed between Ag NCs and CdS QDs, thereby significantly quenching the PEC signal to obtain "super off" state. Meanwhile, these changes resulted in a decreased oxidation peak current of MB (IMB) and an increased that of Fc (IFc). MiRNA-224 was also detected on basis of the dual-signaling EC ratiometric method for complementary PEC detection. Benefiting from different mechanisms and relatively independent signal transduction, this approach not only avoided interference from difficult assembly but also outstandingly increased sensitivity by distance-controllable signal enhancing and quenching strategies. As a result, the detection ranges of 0.1-1000 fM with a low detection limit of 0.019 fM for PEC, and 0.52 to 500 fM with a low detection limit of 0.061 fM for EC, were obtained for miRNA-224, which opens a new avenue for designing numerous elegant biosensors with potential utility in bioanalysis and early disease diagnosis.
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23
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Zhang Q, Fu Y, Xiao K, Du C, Zhang X, Chen J. Sensitive Dual-Mode Biosensors for CYFRA21-1 Assay Based on the Dual-Signaling Electrochemical Ratiometric Strategy and "On-Off-On" PEC Method. Anal Chem 2021; 93:6801-6807. [PMID: 33878864 DOI: 10.1021/acs.analchem.1c00746] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, an electrochemical (EC)-photoelectrochemical (PEC) dual-mode biosensor was constructed for cytokeratin 19 fragment 21-1 (CYFRA21-1) assay based on the dual-signaling electrochemical ratiometric strategy and "on-off-on" PEC method. The indium tin oxide (ITO) electrode was modified by 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA)@C60 and gold nanoparticles (Au NPs), and the double-stranded DNA composed of thiol/methylene blue (MB)-labeled single-stranded DNA (ssDNA) (S0-MB) and antibody/ferrocene (Fc)-labeled ssDNA (Ab1-S1-Fc) was immobilized on the Au NPs/PTCDA@C60/ITO electrode via the Au-S bond between Au NPs and thiol of S0-MB. With the help of another antibody-labeled ssDNA (Ab2-S2), the presence of CYFRA21-1 triggered a typical antigen-antibody sandwich immune reaction (Ab1, CYFRA21-1, and Ab2) and proximity hybridization between Ab1-S1-Fc and Ab2-S2. This caused the release of Ab1-S1-Fc from the modified electrode and the change of S0-MB to a hairpin structure, resulting in a decrease (an increase) of the oxidation peak current of Fc (MB) and an increase of the photocurrent due to the enhancing (inhibiting) effect of MB (Fc) on the photoelectric performance of the Au NPs/PTCDA@C60/ITO electrode. Thus, CYFRA21-1 was detected by the developed EC-PEC dual-mode sensing platform sensitively, and the linear response ranges of 0.001-40 ng/mL with a detection limit of 0.3 pg/mL for the EC technique and 0.0001-4 ng/mL with a detection limit of 0.03 pg/mL for the PEC method were obtained. Furthermore, by changing the specific antibodies of disease-related biomarkers, the developed dual-mode biosensing platform could be readily extended to detect other antigens, implying its great potential applications in biological analysis and early disease diagnosis.
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Affiliation(s)
- Qingqing Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Yamin Fu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ke Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Cuicui Du
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Xiaohua Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jinhua Chen
- 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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24
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Spring SA, Goggins S, Frost CG. Ratiometric Electrochemistry: Improving the Robustness, Reproducibility and Reliability of Biosensors. Molecules 2021; 26:2130. [PMID: 33917231 PMCID: PMC8068091 DOI: 10.3390/molecules26082130] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 12/21/2022] Open
Abstract
Electrochemical biosensors are an increasingly attractive option for the development of a novel analyte detection method, especially when integration within a point-of-use device is the overall objective. In this context, accuracy and sensitivity are not compromised when working with opaque samples as the electrical readout signal can be directly read by a device without the need for any signal transduction. However, electrochemical detection can be susceptible to substantial signal drift and increased signal error. This is most apparent when analysing complex mixtures and when using small, single-use, screen-printed electrodes. Over recent years, analytical scientists have taken inspiration from self-referencing ratiometric fluorescence methods to counteract these problems and have begun to develop ratiometric electrochemical protocols to improve sensor accuracy and reliability. This review will provide coverage of key developments in ratiometric electrochemical (bio)sensors, highlighting innovative assay design, and the experiments performed that challenge assay robustness and reliability.
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Affiliation(s)
- Sam A. Spring
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK;
| | - Sean Goggins
- Bio-Techne (Tocris), The Watkins Building, Atlantic Road, Avonmouth, Bristol BS11 9QD, UK;
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25
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Liu X, Meng F, Sun R, Wang K, Yu Z, Miao P. Three-dimensional bipedal DNA walker enabled logic gates responding to telomerase and miRNA. Chem Commun (Camb) 2021; 57:2629-2632. [PMID: 33587067 DOI: 10.1039/d0cc08089f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this work, we have developed a simple and reliable platform for simultaneous analysis of telomerase and miRNA. A three-dimensional bipedal DNA walking strategy is designed utilizing gold nanoparticles and MnO2 nanosheets. Given the merits of fast, sensitive and selective analysis, the developed method has great potential application in early clinical diagnosis.
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Affiliation(s)
- Xin Liu
- Department of Pharmacy, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan 528300, China.
| | - Fanyu Meng
- Ji Hua Laboratory, Foshan 528200, China.
| | - Rui Sun
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Kangnan Wang
- Department of Pharmacy, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan 528300, China.
| | - Zhiqiang Yu
- Department of Pharmacy, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan 528300, China. and Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Peng Miao
- Ji Hua Laboratory, Foshan 528200, China. and Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
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26
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Wei X, Guo J, Lian H, Sun X, Liu B. Cobalt metal-organic framework modified carbon cloth/paper hybrid electrochemical button-sensor for nonenzymatic glucose diagnostics. SENSORS AND ACTUATORS. B, CHEMICAL 2021. [PMID: 33519089 DOI: 10.1016/j.snb.2020.129215] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In the growing pandemic, family healthcare is widely concerned with the increase of medical self-diagnosis away from the hospital. A cobalt metal-organic framework modified carbon cloth/paper (Co-MOF/CC/Paper) hybrid button-sensor was developed as a portable, robust, and user-friendly electrochemical analytical chip for nonenzymatic quantitative detection of glucose. Highly integrated electrochemical analytical chip was successfully fabricated with a flexible Co-MOF/CC sensing interface, effectively increasing the specific area and catalytic sites than the traditional plane electrode. Based on the button-sensor, rapid quantitative detection of glucose was achieved in multiple complex bio-matrixes, such as serum, urine, and saliva, with desired selectivity, stability, and durability. With the advantages of low cost, high environment tolerance, ease of production, our nanozyme-based electrochemical analytical chip achieved reliable nonenzymatic electrocatalysis, has great potential for the application of rapid on-site analysis in personalized diagnostic and disease prevention.
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Affiliation(s)
- Xiaofeng Wei
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University), Xiamen, 361021, People's Republic of China
| | - Jialei Guo
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University), Xiamen, 361021, People's Republic of China
| | - Huiting Lian
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University), Xiamen, 361021, People's Republic of China
| | - Xiangying Sun
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University), Xiamen, 361021, People's Republic of China
| | - Bin Liu
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University), Xiamen, 361021, People's Republic of China
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27
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Design of aptamer-based sensing platform using gold nanoparticles functionalized reduced graphene oxide for ultrasensitive detection of Hepatitis B virus. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01292-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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28
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Feng QM, Ma P, Cao QH, Guo YH, Xu JJ. An aptamer-binding DNA walking machine for sensitive electrochemiluminescence detection of tumor exosomes. Chem Commun (Camb) 2020; 56:269-272. [PMID: 31807735 DOI: 10.1039/c9cc08051a] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
An aptamer-binding DNA walking machine triggered by the recognition of aptamers to exosomes was firstly reported for sensitive electrochemiluminescence (ECL) detection of exosomes.
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Affiliation(s)
- Qiu-Mei Feng
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
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29
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Lei S, Liu Z, Xu L, Zou L, Li G, Ye B. A "signal-on" electrochemical biosensor based on DNAzyme-driven bipedal DNA walkers and TdT-mediated cascade signal amplification strategy. Anal Chim Acta 2019; 1100:40-46. [PMID: 31987151 DOI: 10.1016/j.aca.2019.12.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 11/19/2022]
Abstract
In this work, a dual amplified signal enhancement approach based on coupling deoxyribozyme (DNAzyme)-driven bipedal DNA walkers (BDW) and terminal deoxynucleotidyl transferase (TdT)-mediated DNA elongation signal amplifications has been developed for highly sensitive and label-free electrochemical detection of thrombin in human serums. In presence of thrombin, the BDW complex, which is comprised from the target thrombin and two DNAzyme-containing probes, can exhibit autonomous cleavage behavior on the surface of the substrate DNA (SD) modified electrode, and remove the cleaved DNA fragment from the electrode surface. Subsequently, the TdT can catalyze the elongation of the SD with free 3'-OH termini and formation of many G-quadruplex sequence replicates with the presence of 2'-deoxyaguanosine-5'-triphosphate (dGTP) and adenosine 5'-triphosphate (dATP) at a molar ratio of 6:4. These G-quadruplex sequences bind hemin and generate drastically amplified current response for sensitive detection of thrombin in a "signal-on" and completely label-free fashion. Under optimized conditions, the response peak current was linear with the concentration of thrombin in the range from 0.5 pM to 100000 pM with detection limit of 0.31 pM. This research provides us a sustainable idea for the hyphenated multiple amplification strategies and a stable and effective method for the detection of protein biomarkers.
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Affiliation(s)
- Sheng Lei
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Zi Liu
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Lingling Xu
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Lina Zou
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Gaiping Li
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Baoxian Ye
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, PR China.
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30
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Zhang Y, Chen X. Nanotechnology and nanomaterial-based no-wash electrochemical biosensors: from design to application. NANOSCALE 2019; 11:19105-19118. [PMID: 31549117 DOI: 10.1039/c9nr05696c] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Nanotechnology and nanomaterial based electrochemical biosensors (ECBs) have achieved great development in many fields, such as clinical diagnosis, food analysis, and environmental monitoring. Nowadays, the single-handed pursuit of sensitivity and accuracy cannot meet the demands of detection in many in situ and point-of-care (POC) circumstances. More and more attention has been focused on simplifying the operation procedure and reducing detection time, and thus no-wash assay has become one of the most effective ways for the continuous development of ECBs. However, there are many challenges to realize no-wash detection in the real analysis, such as redox interferences, multiple impurities, non-conducting protein macromolecules, etc. Furthermore, the complex detection circumstance in different application fields makes the realization of no-wash ECBs more complicated and difficult. Thanks to the updated nanotechnology and nanomaterials, in-depth analysis of the obstacles in the detection process and various methods for fabricating no-wash ECBs, most issues have been largely resolved. In this review, we have systematically analyzed the nanomaterial based design strategy of the state-of-the-art no-wash ECBs in the past few years. Following that, we summarized the challenges in the detection process of no-wash ECBs and their applications in different fields. Finally, based on the summary and analysis in this review, we also evaluated and discussed future prospects from the design to the application of ECBs.
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Affiliation(s)
- Yong Zhang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China. and Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA.
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, USA.
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31
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Zhou X, Zhang W, Wang Z, Han J, Xie G, Chen S. Ultrasensitive aptasensing of insulin based on hollow porous C 3N 4/S 2O 82-/AuPtAg ECL ternary system and DNA walker amplification. Biosens Bioelectron 2019; 148:111795. [PMID: 31665673 DOI: 10.1016/j.bios.2019.111795] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 11/29/2022]
Abstract
In this work, a high-efficiency electrochemiluminescence (ECL) ternary system was constructed for ultrasensitive assay of insulin based on hollow porous graphitic carbon nitride (HP-C3N4) as novel luminophore, S2O82- as coreactant and tri-metallic AuPtAg as coreaction accelerator. Specifically, in comparison with C3N4-based bulk nanomaterials, the as-prepared HP-C3N4 exhibits high luminous efficiency though decreased inner filter effect and minimized inactive ECL emitter. Noteworthy, tri-metallic AuPtAg, possessing the superiority of Au, Pt and Ag, was first used as coreaction accelerator to significantly enhance ECL intensity of HP-C3N4 and S2O82-. As a consequence, with the resultant ECL ternary (HP-C3N4/S2O82-/AuPtAg) system as aptasensing platform, a high-intense initial ECL signal was achieved. Subsequently, ferrocene-labeled quenching probe (Fc-HP2) as ECL quencher was used to quench the initial signal and achieve the low-background noise. Eventually, in the presence of insulin, the target-induced triple-helix molecular switch and Nb.BbvCI-assisted DNA walker amplification were executed to recover a strong ECL signal by releasing Fc-HP2 from the electrode surface. As expected, the constructed aptasensor presents an excellent sensitivity and selectivity for detecting insulin range from 0.05 pg mL-1 to 100 ng mL-1 with a detection limit of 17 fg mL-1. This work provides a new avenue for developing highly efficient HP-C3N4 based ECL ternary system as well as ultrasensitive ECL aptasensors for bioanalysis.
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Affiliation(s)
- Xumei Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China
| | - Wen Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China
| | - Zhen Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China
| | - Jing Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China.
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi, 710127, PR China.
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32
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Wang X, Liu G, Qi Y, Yuan Y, Gao J, Luo X, Yang T. Embedded Au Nanoparticles-Based Ratiometric Electrochemical Sensing Strategy for Sensitive and Reliable Detection of Copper Ions. Anal Chem 2019; 91:12006-12013. [PMID: 31433623 DOI: 10.1021/acs.analchem.9b02945] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The ratiometric method allows the measurement of ratio changes between two signals, which can reduce the detection signal fluctuations caused by distinct background conditions and greatly improve the reproducibility and reliability of detection. However, in contrast with the emerging dual excitation or dual emission dyes applied in ratiometric luminescence measurement, only a few internal reference probes have been exploited for ratiometric electrochemical detection. In this paper, a gold nanoparticles@carbonized resin nanospheres composite with thermally reduced graphene oxide as scaffold (AuNPs@CRS-TrGNO) has been fabricated, and the AuNPs embedded in the CRS were first used as an internal reference probe for ratiometric electrochemical detection. The detachment and aggregation of AuNPs is suppressed by embedding in the CRS, so its redox signal is very stable, which provides feasibility for ratiometric detection. Moreover, the embedment of AuNPs, carbonization of resin spheres, and hybridization with TrGNO all have played positive roles in improving the charge transfer rate, which leads to excellent electrochemical performance of the composite. Based on these characteristics of the AuNPs@CRS-TrGNO, a new ratiometric electrochemical detection platform was constructed, and copper ions (Cu2+) in simulated seawater were successfully detected. This ratiometric method has the advantages of simple design and convenient operation, and obviously it improves the reproducibility and reliability of the electrochemical sensor.
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Affiliation(s)
- Xinxing Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; Key Laboratory of Eco-chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Guangmao Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; Key Laboratory of Eco-chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Youxiao Qi
- College of Environment and Safety Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Yue Yuan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; Key Laboratory of Eco-chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Jian Gao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; Key Laboratory of Eco-chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Xiliang Luo
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; Key Laboratory of Eco-chemical Engineering; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Tao Yang
- School of Chemical Engineering and Technology , Sun Yat-Sen University , Zhuhai 519082 , China
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33
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Wang C, Liu R, Hu J, Lv Y. Ratiometric DNA Walking Machine for Accurate and Amplified Bioassay. Chemistry 2019; 25:12270-12274. [DOI: 10.1002/chem.201903034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Chaoqun Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Rui Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Jianyu Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Yi Lv
- Analytical & Testing CenterSichuan University Chengdu 610064 P.R. China
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34
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Lei S, Xu L, Liu Z, Zou L, Li G, Ye B. An enzyme-free and label-free signal-on aptasensor based on DNAzyme-driven DNA walker strategy. Anal Chim Acta 2019; 1081:59-64. [PMID: 31446964 DOI: 10.1016/j.aca.2019.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/27/2019] [Accepted: 07/04/2019] [Indexed: 11/30/2022]
Abstract
Herein, a signal-on electrochemical aptasensor for highly sensitive detection of thrombin (TB) was constructed based on the DNAzyme-driven DNA walker strategy. We developed a new dual functional hairpin DNA (HP) containing a substrate sequence of the Mg2+-dependent DNAzyme (in the loop region) and the G-quadruplex forming segment (in the stem region). The DNA walker (TBA2-DWs), containing a TB aptamer and an enzymatic sequence, was introduced onto gold electrode (GE) by aptamers-target specific recognition, and thus initiated the enzymatic sequences to hybridize with the substrate sequence. Then, the DNA walker could repeatedly bind and cleave HP in the assistance of Mg2+, unlocking many active G-quadruplex forming sequences. Finally, hemin can further bind the G-quadruplex to form G-quadruplex/hemin complexes and generate enhanced current output. The aptasensor for TB assay showed a linear detection range from 1 pM to 60000 pM with a lower detection limit of 0.58 pM. And more, the proposed detection strategy was enzyme-free and label-free.
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Affiliation(s)
- Sheng Lei
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Lingling Xu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Zi Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Lina Zou
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Gaiping Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Baoxian Ye
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, PR China.
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35
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36
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Li Y, Chang Y, Ma J, Wu Z, Yuan R, Chai Y. Programming a Target-Initiated Bifunctional DNAzyme Nanodevice for Sensitive Ratiometric Electrochemical Biosensing. Anal Chem 2019; 91:6127-6133. [DOI: 10.1021/acs.analchem.9b00690] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yunrui Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Yuanyuan Chang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Jing Ma
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Zhongyu Wu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
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37
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Chen Z, Wang C, Hao L, Gao R, Li F, Liu S. Proximity recognition and polymerase-powered DNA walker for one-step and amplified electrochemical protein analysis. Biosens Bioelectron 2019; 128:104-112. [DOI: 10.1016/j.bios.2018.12.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/27/2018] [Accepted: 12/28/2018] [Indexed: 12/20/2022]
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38
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He Q, Chen X, He Y, Guan T, Feng G, Lu B, Wang B, Zhou X, Hu L, Cao D. Spectral-optical-tweezer-assisted fluorescence multiplexing system for QDs-encoded bead-array bioassay. Biosens Bioelectron 2019; 129:107-117. [PMID: 30685705 DOI: 10.1016/j.bios.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 01/01/2023]
Abstract
As an efficient tool in the multiplexed detection of biomolecules, bead-array could achieve separation-free detection to multiple targets, making it suitable to analyze valuable and scarce samples like antigen and antibody from living organism. Herein, we propose a spectral-optical-tweezer-assisted fluorescence multiplexing system to analyze biomolecule-conjugated bead-array. Using optical tweezer, we trapped and locked beads at the focus to accept stimulation, offering a stable and optimized analysis condition. Moving the system focus and scanning the sample slide, we achieved emissions collection to QDs-encoded bead-array after the multiplexed detection. The emission spectra of fluorescence were collected and recorded by the spectrometer. By recognizing locations of decoding peaks and counting the intensities of label signals of emission spectra, we achieved qualitative and quantitative detection to targets. As proof-of-concept studies, we use this system to carry out multiplexed detection to various types of anti-IgG in the single sample and the detection limit reaches 1.52 pM with a linear range from 0.31 to 10 nM. Through further optimization of experimental conditions, we achieved specific detection to target IgG with sandwich method in human serum and the detection limit reaches as low as 0.23 pM with a linear range from 0.88 to 28 pM, validating the practical application of this method in real samples.
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Affiliation(s)
- Qinghua He
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; Department of Physics, Tsinghua University, Beijing 100084, China
| | - Xuejing Chen
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; Department of Physics, Tsinghua University, Beijing 100084, China
| | - Yonghong He
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; Department of Physics, Tsinghua University, Beijing 100084, China
| | - Tian Guan
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Medicine, Tsinghua University, Beijing 100084, China.
| | - Guangxia Feng
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; School of Medicine, Tsinghua University, Beijing 100084, China
| | - Bangrong Lu
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Bei Wang
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Xuesi Zhou
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Liangshan Hu
- Department of Laboratory Medicine, Guangdong Second Provincial General Hospital, Guangzhou 510317, China
| | - Donglin Cao
- Department of Laboratory Medicine, Guangdong Second Provincial General Hospital, Guangzhou 510317, China.
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39
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Ge J, Li C, Zhao Y, Yu X, Jie G. Versatile “on–off” biosensing of thrombin and miRNA based on Ag(i) ion-enhanced or Ag nanocluster-quenched electrochemiluminescence coupled with hybridization chain reaction amplification. Chem Commun (Camb) 2019; 55:7350-7353. [DOI: 10.1039/c9cc03235e] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel biosensing platform based on Ag(i) ion-enhanced or Ag nanoclusters (NCs)-quenched electrochemiluminescence (ECL) of CdSe quantum dots (QDs) was designed for versatile “on–off” assays of thrombin (TB) and miRNA.
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Affiliation(s)
- Junjun Ge
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong
- College of Chemistry and Molecular Engineering
| | - Chunli Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong
- College of Chemistry and Molecular Engineering
| | - Yu Zhao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong
- College of Chemistry and Molecular Engineering
| | - Xijuan Yu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong
- College of Chemistry and Molecular Engineering
| | - Guifen Jie
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- MOE
- Shandong Key Laboratory of Biochemical Analysis
- Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong
- College of Chemistry and Molecular Engineering
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40
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Chang J, Li H, Li F. Diffusivity and intercalation of electroactive dyes-mediated truly ratiometric homogeneous electrochemical strategy for highly sensitive biosensing. Chem Commun (Camb) 2019; 55:10603-10606. [DOI: 10.1039/c9cc05022a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A truly ratiometric homogeneous electrochemical biosensor was developed for miRNA detection based on the unique diffusion/intercalation properties of electroactive dyes.
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Affiliation(s)
- Jiafu Chang
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan 250014
- People's Republic of China
| | - Haiyin Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- People's Republic of China
| | - Feng Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan 250014
- People's Republic of China
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41
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Song J, Li S, Gao F, Wang Q, Lin Z. An in situ assembly strategy for the construction of a sensitive and reusable electrochemical aptasensor. Chem Commun (Camb) 2019; 55:905-908. [DOI: 10.1039/c8cc08615j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ assembly of an electroactive AuNPs–Cu2+–l-cysteine tag was applied for the construction of a sensitive and reusable aptasensor.
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Affiliation(s)
- Juan Song
- College of Chemistry and Environment
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology
- Minnan Normal University
- Zhangzhou
- China
| | - Songling Li
- College of Chemistry and Environment
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology
- Minnan Normal University
- Zhangzhou
- China
| | - Feng Gao
- College of Chemistry and Environment
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology
- Minnan Normal University
- Zhangzhou
- China
| | - Qingxiang Wang
- College of Chemistry and Environment
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology
- Minnan Normal University
- Zhangzhou
- China
| | - Zhenyu Lin
- MOE Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- Institute of Nanomedicine and Nanobiosensing
- College of Chemistry
- Fuzhou University
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42
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Meng L, Li Y, Yang R, Zhang X, Du C, Chen J. A sensitive photoelectrochemical assay of miRNA-155 based on a CdSe QDs//NPC-ZnO polyhedra photocurrent-direction switching system and target-triggered strand displacement amplification strategy. Chem Commun (Camb) 2019; 55:2182-2185. [DOI: 10.1039/c8cc09411j] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new photoelectrochemical biosensor based on a CdSe QD//NPC-ZnO polyhedra photocurrent-direction switching system and a target-triggered strand displacement amplification strategy was developed for the detection of miRNA-155.
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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
| | - Yanmei Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Ruiying Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Xiaohua Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Cuicui Du
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Jinhua Chen
- 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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43
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Li P, Wei M, Zhang F, Su J, Wei W, Zhang Y, Liu S. Novel Fluorescence Switch for MicroRNA Imaging in Living Cells Based on DNAzyme Amplification Strategy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:43405-43410. [PMID: 30474956 DOI: 10.1021/acsami.8b15330] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
MicroRNAs (miRNAs) play important roles in the regulation of target gene expression and cell development. Therefore, developing of accurate and visual detection methods for miRNAs is important for early diagnosis of cancer. In this study, we established a visual detection method for miRNA 155 based on DNAzyme amplification strategy in living cells. MnO2 nanosheets were employed to deliver locked DNAzyme and substrate DNA into cells. The gold nanoparticle (AuNP) probe was taken up by cells autonomously. Then, MnO2 nanosheets were reduced to Mn2+ by glutathione in cells and DNA modules were released. MiRNA 155 took away locker DNA by strand displacement reaction to activate the DNAzyme. Then, the DNAzyme cleaved the substrate DNA and released single-stranded DNA named key DNA. Then, Key DNA hybridized with the hairpin DNA, making cy5 far away from AuNP and turning on its fluorescence. One target miRNA led to plenty of released key DNA when lots of substrate DNA was added. Thus, the visual detection of miRNA 155 in living cells would be initiated. Under confocal laser microscopy, the fluorescence was obviously observed in tumor cells but not in normal cells. The method has a linear range from 0.1 to 10 nM and a low detection limit of 44 pM on in vitro detection.
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Affiliation(s)
- Peixin Li
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Min Wei
- College of Food Science and Technology , Henan University of Technology , Zhengzhou 450001 , China
| | - Fen Zhang
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Juan Su
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Wei Wei
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Yuanjian Zhang
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Songqin Liu
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
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