1
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Chen C, Li D, Jin B. Development of a Selective Electrochemical Biosensor for Bisphenol a Based on Target-Induced Chain Release Involving Methylene Blue Release. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2026374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Caifen Chen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, China
| | - Dan Li
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, China
| | - Baokang Jin
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, China
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2
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Yu X, Zhang S, Guo W, Li B, Yang Y, Xie B, Li K, Zhang L. Recent Advances on Functional Nucleic-Acid Biosensors. SENSORS (BASEL, SWITZERLAND) 2021; 21:7109. [PMID: 34770415 PMCID: PMC8587875 DOI: 10.3390/s21217109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/17/2021] [Accepted: 10/23/2021] [Indexed: 02/07/2023]
Abstract
In the past few decades, biosensors have been gradually developed for the rapid detection and monitoring of human diseases. Recently, functional nucleic-acid (FNA) biosensors have attracted the attention of scholars due to a series of advantages such as high stability and strong specificity, as well as the significant progress they have made in terms of biomedical applications. However, there are few reports that systematically and comprehensively summarize its working principles, classification and application. In this review, we primarily introduce functional modes of biosensors that combine functional nucleic acids with different signal output modes. In addition, the mechanisms of action of several media of the FNA biosensor are introduced. Finally, the practical application and existing problems of FNA sensors are discussed, and the future development directions and application prospects of functional nucleic acid sensors are prospected.
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Affiliation(s)
| | | | | | | | | | | | | | - Li Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (X.Y.); (S.Z.); (W.G.); (B.L.); (Y.Y.); (B.X.); (K.L.)
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3
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Zhao L, Zhang X, Zhou Y. Electrochemical Investigation of Heterogeneous Affinity Behaviour of Methylene Blue and G‐quadruplex. ELECTROANAL 2020. [DOI: 10.1002/elan.202060315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ling‐Li Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS), MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Xin‐Xiang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
| | - Ying‐Lin Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering Peking University Beijing 100871 China
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4
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Majumdar S, Thakur D, Chowdhury D. DNA Carbon-Nanodots based Electrochemical Biosensor for Detection of Mutagenic Nitrosamines. ACS APPLIED BIO MATERIALS 2020; 3:1796-1803. [PMID: 35021669 DOI: 10.1021/acsabm.0c00073] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mutagenic and Carcinogenic substances are a threat to any living organism, and its detection is of paramount importance. In this work, we fabricate for the first time a DNA-carbon dots based electrochemical biosensor for sensitive and selective detection of mutagenic nitrosamines like N-nitrosodimethylamine (NDMA) and N-nitrosodiethanolamine (NDEA). At first, on the glassy carbon electrode (GCE), chitosan carbon dot was deposited, then, DNA was electro-statically immobilizing on the surface of carbon dots to fabricate the sensing electrode (DNA/chiCD/GCE modified electrode). In the presence of NDMA and NDEA, in differential pulse voltammetry technique, the absolute peak current increases, and thus it can detect NDMA and NDEA. The system DNA/chiCD/GCE modified electrode is highly selective and sensitive toward NDMA and NDEA. The detection limit was determined to be 9.9 × 10-9 M and 9.6 × 10-9 M, respectively. The possible reason for DNA/chiCD/GCE modified electrode showing such electrochemical selectivity toward nitrosamines is investigated and discussed.
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Affiliation(s)
- Sristi Majumdar
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Debajit Thakur
- Life Sciences Division Institute of Advanced Study in Science and Technology, Garchuk, Guwahati 781035, India
| | - Devasish Chowdhury
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
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5
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Electrochemical biosensor for amplified detection of Pb2+ based on perfect match of reduced graphene oxide–gold nanoparticles and single-stranded DNAzyme. Anal Bioanal Chem 2019; 411:7499-7509. [DOI: 10.1007/s00216-019-02146-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/08/2019] [Accepted: 09/09/2019] [Indexed: 12/21/2022]
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6
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Ravikumar A, Panneerselvam P, Radhakrishnan K, Morad N, Anuradha CD, Sivanesan S. DNAzyme Based Amplified Biosensor on Ultrasensitive Fluorescence Detection of Pb (II) Ions from Aqueous System. J Fluoresc 2017; 27:2101-2109. [DOI: 10.1007/s10895-017-2149-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 07/31/2017] [Indexed: 10/19/2022]
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7
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Yu Z, Zhou W, Han J, Li Y, Fan L, Li X. Na+-Induced Conformational Change of Pb2+-Stabilized G-Quadruplex and Its Influence on Pb2+ Detection. Anal Chem 2016; 88:9375-9380. [DOI: 10.1021/acs.analchem.6b02466] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ze Yu
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Wei Zhou
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Juan Han
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Yunchao Li
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Louzhen Fan
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Xiaohong Li
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing, 100875, China
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8
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Díaz-González M, Gutiérrez-Capitán M, Niu P, Baldi A, Jiménez-Jorquera C, Fernández-Sánchez C. Electrochemical devices for the detection of priority pollutants listed in the EU water framework directive. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.11.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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DasGupta S, Shelke SA, Li NS, Piccirilli JA. Spinach RNA aptamer detects lead(II) with high selectivity. Chem Commun (Camb) 2016; 51:9034-7. [PMID: 25940073 DOI: 10.1039/c5cc01526j] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spinach RNA aptamer contains a G-quadruplex motif that serves as a platform for binding and fluorescence activation of a GFP-like fluorophore. Here we show that Pb(2+) induces formation of Spinach's G-quadruplex and activates fluorescence with high selectivity and sensitivity. This device establishes the first example of an RNA-based sensor that provides a simple and inexpensive tool for Pb(2+) detection.
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Affiliation(s)
- Saurja DasGupta
- Department of Chemistry, The University of Chicago, Chicago, IL 60637, USA.
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10
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Liu Z, Wang Y, Guo Y, Dong C. Label-free Electrochemical Aptasensor for Carcino-embryonic Antigen Based on Ternary Nanocomposite of Gold Nanoparticles, Hemin and Graphene. ELECTROANAL 2015. [DOI: 10.1002/elan.201500593] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Wu L, Yao Y, Li Z, Zhang X, Chen J. A new amplified impedimetric aptasensor based on the electron transfer ability of Au nanoparticles and their affinity with aptamer. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.09.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Zhan S, Xu H, Zhang W, Zhan X, Wu Y, Wang L, Zhou P. Sensitive fluorescent assay for copper (II) determination in aqueous solution using copper-specific ssDNA and Sybr Green I. Talanta 2015; 142:176-82. [DOI: 10.1016/j.talanta.2015.04.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/04/2015] [Accepted: 04/12/2015] [Indexed: 12/18/2022]
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13
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Fei A, Liu Q, Huan J, Qian J, Dong X, Qiu B, Mao H, Wang K. Label-free impedimetric aptasensor for detection of femtomole level acetamiprid using gold nanoparticles decorated multiwalled carbon nanotube-reduced graphene oxide nanoribbon composites. Biosens Bioelectron 2015; 70:122-9. [PMID: 25797851 DOI: 10.1016/j.bios.2015.03.028] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 01/24/2023]
Abstract
Gold nanoparticles (Au NPs) decorated multiwalled carbon nanotube-reduced graphene oxide nanoribbon (Au/MWCNT-rGONR) composites were synthesized by a one-pot reaction. By employing the resulting Au/MWCNT-rGONR composites as the support for aptamer immobilization, we developed an ultrasensitive label-free electrochemical impedimetric aptasensor for acetamiprid detection, which was based on that the variation of electron transfer resistance was relevant to the formation of acetamiprid-aptamer complex at the modified electrode surface. Compared with pure Au NPs and MWCNT-rGONR, the Au/MWCNT-rGONR composites modified electrode was the most sensitive aptasensing platform for the determination of acetamiprid. The proposed aptasensor displayed a linear response for acetamiprid in the range from 5×10(-14) M to 1×10(-5) M with an extremely low detection limit of 1.7×10(-14) M (S/N=3). In addition, this impedimetric aptasensor possessed great advantages including the simple operation process, low-cost, selectivity and sensitivity, which provided a promising model for the aptamer-based detection with a direct impedimetric method.
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Affiliation(s)
- Airong Fei
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Juan Huan
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaoya Dong
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Baijing Qiu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Hanping Mao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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14
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Chen P, Zhang R, Jiang Q, Xiong X, Deng S. Colorimetric Detection of Lead Ion Based on Gold Nanoparticles and Lead-Stabilized G-Quartet Formation. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jbise.2015.87042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Berlina AN, Sharma AK, Zherdev AV, Gaur MS, Dzantiev BB. Colorimetric Determination of Lead Using Gold Nanoparticles. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.961641] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Zhang FT, Nie J, Zhang DW, Chen JT, Zhou YL, Zhang XX. Methylene blue as a G-quadruplex binding probe for label-free homogeneous electrochemical biosensing. Anal Chem 2014; 86:9489-95. [PMID: 25211349 DOI: 10.1021/ac502540m] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Herein, G-quadruplex sequence was found to significantly decrease the diffusion current of methylene blue (MB) in homogeneous solution for the first time. Electrochemical methods combined with circular dichroism spectroscopy and UV-vis spectroscopy were utilized to systematically explore the interaction between MB and an artificial G-quadruplex sequence, EAD2. The interaction of MB and EAD2 (the binding constant, K ≈ 1.3 × 10(6) M(-1)) was stronger than that of MB and double-stranded DNA (dsDNA) (K ≈ 2.2 × 10(5) M(-1)), and the binding stoichiometry (n) of EAD2/MB complex was calculated to be 1.0 according to the electrochemical titration curve combined with Scatchard analysis. MB was proved to stabilize the G-quadruplex structure of EAD2 and showed a competitive binding to G-quadruplex in the presence of hemin. EAD2 might mainly interact with MB, a positive ligand of G-quadruplex, through the end-stacking with π-system of the guanine quartet, which was quite different from the binding mechanism of dsDNA with MB by intercalation. A novel signal read-out mode based on the strong affinity between G-quadruplex and MB coupling with aptamer/G-quadruplex hairpin structure was successfully implemented in cocaine detection with high specificity. G-quadruplex/MB complex will function as a promising electrochemical indicator for constructing homogeneous label-free electrochemical biosensors, especially in the field of simple, rapid, and noninvasive biochemical assays.
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Affiliation(s)
- Fang-Ting Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China
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17
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Jarczewska M, Kierzkowska E, Ziółkowski R, Górski L, Malinowska E. Electrochemical oligonucleotide-based biosensor for the determination of lead ion. Bioelectrochemistry 2014; 101:35-41. [PMID: 25042900 DOI: 10.1016/j.bioelechem.2014.06.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/30/2014] [Accepted: 06/30/2014] [Indexed: 01/25/2023]
Abstract
The possibility of utilization of gold electrodes modified with short guanine-rich ssDNA probes for determination of Pb(2+) was examined. Interaction between guanine residues and lead ion followed by formation of G-quadruplex structures was confirmed by electrochemical impedance spectroscopy investigations. An external cationic redox label, methylene blue, was employed in voltammetric measurements for analytical signal generation. It was shown that due to the G-quadruplex formation, the oligonucleotides in the recognition layer fold, which enhances the electron transfer between methylene blue and the electrode surface. The MB current signal rises proportionally to the lead ion concentration in the range from 0.05 to 1μmol/L. The developed biosensor demonstrated high selectivity towards Pb(2+) ion, with only minor response towards interfering metal cations. The calculated limit of detection was of 34.7nmol/L. The utilization of the biosensor for Pb(2+) determination in real samples of water was also tested.
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Affiliation(s)
- Marta Jarczewska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Ewa Kierzkowska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Robert Ziółkowski
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Lukasz Górski
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Elżbieta Malinowska
- Institute of Biotechnology, Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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18
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Wu S, Duan N, Shi Z, Fang C, Wang Z. Dual fluorescence resonance energy transfer assay between tunable upconversion nanoparticles and controlled gold nanoparticles for the simultaneous detection of Pb²⁺ and Hg²⁺. Talanta 2014; 128:327-36. [PMID: 25059168 DOI: 10.1016/j.talanta.2014.04.056] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/16/2014] [Accepted: 04/21/2014] [Indexed: 01/11/2023]
Abstract
In this work, we presented a novel dual fluorescence resonance energy transfer (FRET) system for the simultaneous detection of Pb(2+) and Hg(2+). This system employed two color upconversion nanoparticles (UCNPs) as the donors, and controlled gold nanoparticles (AuNPs) as the acceptors. The two donor-acceptor pairs were fabricated by hybridizing the aptamers and their corresponding complementary DNA. Thus, the green and red upconversion fluorescence could be quenched because of a good overlap between the UCNPs fluorescence emission and the AuNPs absorption spectrum. In the presence of Pb(2+) and Hg(2+), the aptamers preferred to bind to their corresponding analytes and formed a G-quadruplexes structure for Pb(2+) and the hairpin-like structure for Hg(2+). As a result, the dual FRET was disrupted, and the green and red upconversion fluorescence was restored. Under optimized experimental conditions, the relative fluorescence intensity increased as the metal ion concentrations were increased, allowing for the quantification of Pb(2+) and Hg(2+). The relationships between the fluorescence intensity and plotting logarithms of ion concentrations were linear in the range from 0.1 to 100 nM for Pb(2+) and 0.5 to 500 nM for Hg(2+), and the detection limits of Pb(2+) and Hg(2+) were 50 pM and 150 pM, respectively. As a practical application, the aptasensor was used to monitor Pb(2+) and Hg(2+) levels in naturally contaminated samples and human serum samples. Ultimately, this type of dual FRET could be used to detect other metal ions or contaminants in food safety analysis and environment monitoring.
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Affiliation(s)
- Shijia Wu
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Nuo Duan
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhao Shi
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Congcong Fang
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China.
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19
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Abstract
Increasing interest in detecting metal ions in many chemical and biomedical fields has created demands for developing sensors and imaging agents for metal ions with high sensitivity and selectivity. This review covers recent progress in DNA-based sensors and imaging agents for metal ions. Through both combinatorial selection and rational design, a number of metal-ion-dependent DNAzymes and metal-ion-binding DNA structures that can selectively recognize specific metal ions have been obtained. By attachment of these DNA molecules with signal reporters such as fluorophores, chromophores, electrochemical tags, and Raman tags, a number of DNA-based sensors for both diamagnetic and paramagnetic metal ions have been developed for fluorescent, colorimetric, electrochemical, and surface Raman detection. These sensors are highly sensitive (with a detection limit down to 11 ppt) and selective (with selectivity up to millions-fold) toward specific metal ions. In addition, through further development to simplify the operation, such as the use of "dipstick tests", portable fluorometers, computer-readable disks, and widely available glucose meters, these sensors have been applied for on-site and real-time environmental monitoring and point-of-care medical diagnostics. The use of these sensors for in situ cellular imaging has also been reported. The generality of the combinatorial selection to obtain DNAzymes for almost any metal ion in any oxidation state and the ease of modification of the DNA with different signal reporters make DNA an emerging and promising class of molecules for metal-ion sensing and imaging in many fields of applications.
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Affiliation(s)
- Yu Xiang
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Fax: 217-244-3186; Tel: 217-333-2619
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Fax: 217-244-3186; Tel: 217-333-2619
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20
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Gutiérrez-Capitán M, Ipatov A, Merlos Á, Jiménez-Jorquera C, Fernández-Sánchez C. Compact Electrochemical Flow System for the Analysis of Environmental Pollutants. ELECTROANAL 2014. [DOI: 10.1002/elan.201300473] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Zhan S, Wu Y, Luo Y, Liu L, He L, Xing H, Zhou P. Label-free fluorescent sensor for lead ion detection based on lead(II)-stabilized G-quadruplex formation. Anal Biochem 2014; 462:19-25. [PMID: 24486320 DOI: 10.1016/j.ab.2014.01.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 01/15/2014] [Accepted: 01/20/2014] [Indexed: 11/18/2022]
Abstract
A label-free fluorescent DNA sensor for the detection of lead ions (Pb(2+)) based on lead(II)-stabilized G-quadruplex formation is proposed in this article. A guanine (G)-rich oligonucleotide, T30695, was used as a recognition probe, and a DNA intercalator, SYBR Green I (SG), was used as a signal reporter. In the absence of Pb(2+), the SG intercalated with the single-stranded random-coil T30695 and emitted strong fluorescence. While in the presence of Pb(2+), the random-coil T30695 would fold into a G-quadruplex structure and the SG could barely show weak fluorescence, and the fluorescence intensity was inversely proportional to the involving amount of Pb(2+). Based on this, a selective lead ion sensor with a limit of detection of 3.79 ppb (parts per billion) and a detection range from 0 to 600 ppb was constructed. Because detection for real samples was also demonstrated to be reliable, this simple, low-cost, sensitive, and selective sensor holds good potential for Pb(2+) detection in real environmental samples.
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Affiliation(s)
- Shenshan Zhan
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Yuangen Wu
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Yanfang Luo
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Le Liu
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Lan He
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Haibo Xing
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Pei Zhou
- School of Environmental Science and Engineering, Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
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22
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Lee IL, Sung YM, Wu SP. Triazole-acetate functionalized gold nanoparticles for colorimetric Pb(ii) sensing. RSC Adv 2014. [DOI: 10.1039/c4ra02448f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
New triazole-acetate functionalized gold nanoparticles (TTA–AuNPs) for sensitive and selective colorimetric detection of Pb2+ were developed.
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Affiliation(s)
- I-Lin Lee
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Republic of China
| | - Yi-Ming Sung
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Republic of China
| | - Shu-Pao Wu
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Republic of China
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Liu X, Chen M, Hou T, Wang X, Liu S, Li F. A novel electrochemical biosensor for label-free detection of uracil DNA glycosylase activity based on enzyme-catalyzed removal of uracil bases inducing strand release. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.09.131] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhan S, Wu Y, Liu L, Xing H, He L, Zhan X, Luo Y, Zhou P. A simple fluorescent assay for lead(ii) detection based on lead(ii)-stabilized G-quadruplex formation. RSC Adv 2013. [DOI: 10.1039/c3ra42621a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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