1
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Liu Z, Liu C, He L, Liu J, Li L, Yang S, Tan Y, Liu X, Xiao X. A Cascade Signal Amplification Strategy for the Ultrasensitive Fluorescence Detection of Cu 2+ via λ-Exonuclease-Assisted Target Recycling with Mismatched Catalytic Hairpin Assembly. BIOSENSORS 2023; 13:918. [PMID: 37887111 PMCID: PMC10605925 DOI: 10.3390/bios13100918] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 10/04/2023] [Indexed: 10/28/2023]
Abstract
Herein, an ultrasensitive DNAzyme-based fluorescence biosensor for detecting Cu2+ was designed using the cascade signal amplification strategy, coupling λ-exonuclease-assisted target recycling and mismatched catalytic hairpin assembly (MCHA). In the designed detection system, the target, Cu2+, can activate the Cu2+-dependent DNAzyme to cause a cleavage reaction, releasing ssDNA (tDNA). Then, tDNA binds to hairpin DNA (H0) with an overhanging 5'-phosphorylated terminus to form dsDNA with a blunt 5'-phosphorylated terminus, which activates the dsDNA to be digested by λ-Exo and releases tDNA along with another ssDNA (iDNA). Subsequently, the iDNA initiates MCHA, which can restore the fluorescence of carboxyfluorescein (FAM) previously quenched by tetramethylrhodamine (TAMRA), resulting in a strong fluorescent signal. Furthermore, MCHA efficiently improves the signal-to-noise ratio of the detection system. More importantly, tDNA recycling can be achieved with the λ-Exo digestion reaction to release more iDNA, efficiently amplifying the fluorescent signal and further improving the sensitivity to Cu2+ with a detection limit of 60 fM. The practical application of the developed biosensor was also demonstrated by detecting Cu2+ in real samples, proving it to be an excellent analytical strategy for the ultrasensitive quantification of heavy metal ions in environmental water sources.
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Affiliation(s)
- Zhen Liu
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Chen Liu
- Hunan Province Key Laboratory for Typical Environmental Pollution and Health Hazards, School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China;
| | - Liqiong He
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Jinquan Liu
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Le Li
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Shengyuan Yang
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Yan Tan
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Xing Liu
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
| | - Xilin Xiao
- Hunan Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Z.L.); (L.H.); (L.L.); (S.Y.); (Y.T.); (X.L.)
- State Key Laboratory of Chemo & Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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2
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Zhang H, Dong K, Xiang S, Lin Y, Cha X, Shang Y, Xu W. A Novel Cu2+ Quantitative Detection Nucleic Acid Biosensors Based on DNAzyme and “Blocker” Beacon. Foods 2023; 12:foods12071504. [PMID: 37048325 PMCID: PMC10094606 DOI: 10.3390/foods12071504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
In this paper, a “turn-off” biosensor for detecting copper (II) ions based on Cu2+-dependent DNAzyme and a “blocker” beacon were developed. Upon the copper ion being added, the Cu2+-dependent DNAzyme substrate strand was irreversibly cleaved, thereby blocking the occurrence of the ligation reaction and PCR, which inhibited the G-rich sequence from forming the G-quadruplex structure, efficiently reducing the detection signal. This method had the characteristics of strong specificity and high sensitivity compared with the existing method due to the application of ligation-dependent probe signal recognition and amplification procedures. Under the optimized conditions, this method proved to be highly sensitive. The signal decreased as the concentration of copper ions increased, exhibiting a linear calibration from 0.03125 μM to 0.5 μM and a limit of detection of 18.25 nM. Subsequently, the selectivity of this biosensor was verified to be excellent by testing different relevant metal ions. Furthermore, this detection system of copper (II) ions was successfully applied to monitor Cu2+ contained in actual water samples, which demonstrated the feasibility of the biosensor.
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Affiliation(s)
- Hanyue Zhang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Kai Dong
- College of Biological Sciences, China Agricultural University, Beijing 100083, China
| | - Shuna Xiang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Yingting Lin
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiaoyan Cha
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Ying Shang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Wentao Xu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
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3
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Li Z, Liu L, Liu Y. An AIE-active dual fluorescent switch with negative photochromism for information display and encryption. NEW J CHEM 2021. [DOI: 10.1039/d1nj01637g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A negative photochromic molecular switch with AIE and two-color fluorescence conversion properties was synthesized.
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Affiliation(s)
- Zhize Li
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Lulu Liu
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Yifei Liu
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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4
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5
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G-quadruplex-assisted enzyme strand recycling for amplified label-free fluorescent detection of UO22+. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.02.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Kumar S, Jain S, Dilbaghi N, Ahluwalia AS, Hassan AA, Kim KH. Advanced Selection Methodologies for DNAzymes in Sensing and Healthcare Applications. Trends Biochem Sci 2018; 44:190-213. [PMID: 30559045 DOI: 10.1016/j.tibs.2018.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/01/2018] [Accepted: 11/01/2018] [Indexed: 02/07/2023]
Abstract
DNAzymes have been widely explored owing to their excellent catalytic activity in a broad range of applications, notably in sensing and biomedical devices. These newly discovered applications have built high hopes for designing novel catalytic DNAzymes. However, the selection of efficient DNAzymes is a challenging process but one that is of crucial importance. Initially, systemic evolution of ligands by exponential enrichment (SELEX) was a labor-intensive and time-consuming process, but recent advances have accelerated the automated generation of DNAzyme molecules. This review summarizes recent advances in SELEX that improve the affinity and specificity of DNAzymes. The thriving generation of new DNAzymes is expected to open the door to several healthcare applications. Therefore, a significant portion of this review is dedicated to various biological applications of DNAzymes, such as sensing, therapeutics, and nanodevices. In addition, discussion is further extended to the barriers encountered for the real-life application of these DNAzymes to provide a foundation for future research.
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Affiliation(s)
- Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana, 125001, India; Department of Civil Engineering, College of Engineering, University of Nebraska at Lincoln, PO Box 886105, Lincoln, NE 68588-6105, USA.
| | - Shikha Jain
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana, 125001, India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar-Haryana, 125001, India
| | | | - Ashraf Aly Hassan
- Department of Civil Engineering, College of Engineering, University of Nebraska at Lincoln, PO Box 886105, Lincoln, NE 68588-6105, USA
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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7
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Manochehry S, McConnell EM, Tram KQ, Macri J, Li Y. Colorimetric Detection of Uranyl Using a Litmus Test. Front Chem 2018; 6:332. [PMID: 30140672 PMCID: PMC6095041 DOI: 10.3389/fchem.2018.00332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/16/2018] [Indexed: 01/10/2023] Open
Abstract
Ingestion of water containing toxic contaminants above levels deemed safe for human consumption can occur unknowingly since numerous common contaminants in drinking water are colorless and odorless. Uranyl is particularly problematic as it has been found at dangerous levels in sources of drinking water. Detection of this heavy metal-ion species in drinking water currently requires sending a sample to a laboratory where trained personnel use equipment to perform the analysis and turn-around times can be long. A pH-responsive colorimetric biosensor was developed to enable detection of uranyl in water which coupled the uranyl-specific 39E DNAzyme as a recognition element, and an enzyme capable of producing a pH change as the reporter element. The rapid colorimetric assay presented herein can detect uranyl in lake and well water at concentrations relevant for environmental monitoring, as demonstrated by the detection of uranyl at levels below the limits set for drinking water by major regulatory agencies including the World Health Organization (30 μg/L). This simple and inexpensive DNAzyme-based assay enabled equipment-free visual detection of 15 μg/L uranyl, using both solution-based and paper-based pH-dependent visualization strategies.
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Affiliation(s)
- Sepehr Manochehry
- Department of Biochemistry and Biomedical Sciences, McMaster UniversityHamilton, ON, Canada
| | - Erin M. McConnell
- Department of Biochemistry and Biomedical Sciences, McMaster UniversityHamilton, ON, Canada
| | - Kha Q. Tram
- Department of Chemistry and Chemical Biology, McMaster UniversityHamilton, ON, Canada
| | - Joseph Macri
- Department of Pathology and Molecular Medicine, McMaster UniversityHamilton, ON, Canada
- Hamilton Regional Laboratory Medicine ProgramHamilton, ON, Canada
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences, McMaster UniversityHamilton, ON, Canada
- Department of Chemistry and Chemical Biology, McMaster UniversityHamilton, ON, Canada
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8
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DU ZH, LI XY, TIAN JJ, Zhang YZ, TIAN HT, XU WT. Progress on Detection of Metals Ions by Functional Nucleic Acids Biosensor. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1016/s1872-2040(18)61094-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Park Y, Lee CY, Park KS, Park HG. Enzyme-Free Colorimetric Detection of Cu2+by Utilizing Target-Triggered DNAzymes and Toehold-Mediated DNA Strand Displacement Events. Chemistry 2017; 23:17379-17383. [DOI: 10.1002/chem.201704346] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Yeonkyung Park
- Department of Chemical and Biomolecular; Engineering (BK21+ Program); KAIST; 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Chang Yeol Lee
- Department of Chemical and Biomolecular; Engineering (BK21+ Program); KAIST; 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Ki Soo Park
- Department of Biological Engineering, College of Engineering; Konkuk University; Seoul 05029 Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular; Engineering (BK21+ Program); KAIST; 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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10
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Affiliation(s)
- Wenhu Zhou
- Xiangya
School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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11
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Gu B, Huang L, Su W, Duan X, Li H, Yao S. A benzothiazole-based fluorescent probe for distinguishing and bioimaging of Hg 2+ and Cu 2+. Anal Chim Acta 2017; 954:97-104. [DOI: 10.1016/j.aca.2016.11.044] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 11/14/2016] [Accepted: 11/17/2016] [Indexed: 12/12/2022]
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12
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Selective and sensitive determination of copper ions in soft drink based on high catalysis of hemin–graphene hybrid nanosheets coupled with enzyme inhibitions. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0910-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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DNAzyme-based biosensor for Cu(2+) ion by combining hybridization chain reaction with fluorescence resonance energy transfer technique. Talanta 2016; 155:245-9. [PMID: 27216680 DOI: 10.1016/j.talanta.2016.04.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 04/11/2016] [Accepted: 04/24/2016] [Indexed: 11/21/2022]
Abstract
A novel signal amplification strategy based on Cu(2+)-dependent DNAzyme was developed for sensing Cu(2+) ion by combining hybridization chain reaction (HCR) with fluorescence resonance energy transfer (FRET) technique. In the presence of Cu(2+) ion, the substrate strands of Cu(2+)-dependent DNAzyme immobilized on magnetic beads were specifically cleaved and released. The released strands initiated the HCR process of hairpin H1 and H2 labeled with FAM as the donor and TAMRA as the acceptor, respectively. Long nicked dsDNA structures were self-assembled to bring the donor and the acceptor in close proximity, resulting in a FRET process. The relative ratio of fluorescent intensities of the acceptor and donor was used to quantitatively detect Cu(2+) ion with a limit of detection of 0.5nmolL(-1). This proposed biosensor was applied to detect Cu(2+) ion in tap water with satisfactory results.
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14
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Tian R, Chen X, Liu D, Yao C. A Sensitive Biosensor for Determination of Cu2+by One-step Electrodeposition. ELECTROANAL 2016. [DOI: 10.1002/elan.201501070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Rong Tian
- College of Chemistry and Molecular Engineering; Nanjing Tech University; Nanjing 211816 P. R. China
| | - Xiaojun Chen
- College of Chemistry and Molecular Engineering; Nanjing Tech University; Nanjing 211816 P. R. China
| | - Dejin Liu
- Institute of Environmental Science of Wanzhou District; Chongqing 404000 P.R. China
| | - Cheng Yao
- College of Chemistry and Molecular Engineering; Nanjing Tech University; Nanjing 211816 P. R. China
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15
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Hu W, Min X, Li X, Yang S, Yi L, Chai L. DNAzyme catalytic beacons-based a label-free biosensor for copper using electrochemical impedance spectroscopy. RSC Adv 2016. [DOI: 10.1039/c5ra20641c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In this study, we developed a novel selective method for copper quantification based on gold nanoclusters (GNCs) and DNAzyme.
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Affiliation(s)
- Wenyong Hu
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
| | - Xiaobo Min
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
| | - Xinyu Li
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
| | - Shengxiang Yang
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
| | - Langbo Yi
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
| | - Liyuan Chai
- School of Metallurgy and Environment
- Central South University
- Changsha
- China
- National Engineering Research Center for Pollution Control of Heavy Metals
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16
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A label-free DNAzyme fluorescence biosensor for amplified detection of Pb2+-based on cleavage-induced G-quadruplex formation. Talanta 2016; 147:302-6. [DOI: 10.1016/j.talanta.2015.10.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/28/2015] [Accepted: 10/01/2015] [Indexed: 01/02/2023]
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17
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Park KS, Lee CY, Park HG. Metal ion triggers for reversible switching of DNA polymerase. Chem Commun (Camb) 2016; 52:4868-71. [DOI: 10.1039/c6cc00454g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new strategy to modulate DNA polymerase activity in a reversible and switchable manner was devised by using the novel interactions between DNA bases and metal ions.
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Affiliation(s)
- Ki Soo Park
- Department of Chemical and Biomolecular Engineering (BK 21+ program)
- KAIST
- Daejeon 305-338
- Republic of Korea
| | - Chang Yeol Lee
- Department of Chemical and Biomolecular Engineering (BK 21+ program)
- KAIST
- Daejeon 305-338
- Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK 21+ program)
- KAIST
- Daejeon 305-338
- Republic of Korea
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18
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Ranallo S, Amodio A, Idili A, Porchetta A, Ricci F. Electronic control of DNA-based nanoswitches and nanodevices. Chem Sci 2015; 7:66-71. [PMID: 28757998 PMCID: PMC5508672 DOI: 10.1039/c5sc03694a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/12/2015] [Indexed: 12/30/2022] Open
Abstract
Here we demonstrate that we can rationally and finely control the functionality of different DNA-based nanodevices and nanoswitches using electronic inputs. To demonstrate the versatility of our approach we have used here three different model DNA-based nanoswitches triggered by heavy metals and specific DNA sequences and a copper-responsive DNAzyme. To achieve electronic-induced control of these DNA-based nanodevices we have applied different voltage potentials at the surface of an electrode chip. The applied potential promotes an electron-transfer reaction that releases from the electrode surface a molecular input that ultimately triggers the DNA-based nanodevice. The use of electronic inputs as a way to finely activate DNA-based nanodevices appears particularly promising to expand the available toolbox in the field of DNA nanotechnology and to achieve a better hierarchical control of these platforms.
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Affiliation(s)
- Simona Ranallo
- Chemistry Department , University of Rome Tor Vergata , Via della Ricerca Scientifica , Rome 00133 , Italy .
| | - Alessia Amodio
- Chemistry Department , University of Rome Tor Vergata , Via della Ricerca Scientifica , Rome 00133 , Italy . .,PhD School of Nanotechnology , Department of Physics , University of Trieste , Trieste , Italy
| | - Andrea Idili
- Chemistry Department , University of Rome Tor Vergata , Via della Ricerca Scientifica , Rome 00133 , Italy .
| | - Alessandro Porchetta
- Chemistry Department , University of Rome Tor Vergata , Via della Ricerca Scientifica , Rome 00133 , Italy .
| | - Francesco Ricci
- Chemistry Department , University of Rome Tor Vergata , Via della Ricerca Scientifica , Rome 00133 , Italy .
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19
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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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20
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Ren M, Deng B, Wang JY, Liu ZR, Lin W. A dual-emission fluorescence-enhanced probe for imaging copper(ii) ions in lysosomes. J Mater Chem B 2015; 3:6746-6752. [PMID: 32262467 DOI: 10.1039/c5tb01184a] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed the first example of a fluorescence-enhanced and lysosome-targeted Cu2+ probe (Lys-Cu) with unique dual-channel emissions. The newly synthesized fluorescent probe Lys-Cu, which contains two recognition sites with different sensing mechanisms for Cu2+, displays fluorescence-enhanced dual-channel emissions with fluorescence response to Cu2+ in the lysosome pH environment. Fluorescence imaging shows that Lys-Cu is membrane-permeable and suitable for visualization of Cu2+ in lysosomes of living cells by dual-channel imaging.
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Affiliation(s)
- Mingguang Ren
- Institute of Fluorescent Probes for Biological Imaging, School of Chemistry and Chemical Engineering, School of Biological Science and Technology, University of Jinan, Jinan, Shandong 250022, P. R. China.
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21
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Wang Z, Chen B, Duan J, Hao T, Jiang X, Guo Z, Wang S. A test strip for lead(II) based on gold nanoparticles multi-functionalized by DNAzyme and barcode DNA. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815030247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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DNAzyme self-assembled gold nanorods-based FRET or polarization assay for ultrasensitive and selective detection of copper(II) ion. Biosens Bioelectron 2014; 55:285-8. [DOI: 10.1016/j.bios.2013.12.032] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 12/03/2013] [Accepted: 12/11/2013] [Indexed: 01/07/2023]
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23
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He JL, Zhu SL, Wu P, Li PP, Li T, Cao Z. Enzymatic cascade based fluorescent DNAzyme machines for the ultrasensitive detection of Cu(II) ions. Biosens Bioelectron 2014; 60:112-7. [PMID: 24787125 DOI: 10.1016/j.bios.2014.03.065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/20/2014] [Accepted: 03/31/2014] [Indexed: 10/25/2022]
Abstract
A novel enzymatic cascade based fluorescent DNAzyme machine has been developed for the amplified detection of copper (Cu(2+)) ions. This is the first attempt to carry out the combination of the self-cleaving DNAzyme and the polymerase/endonuclease reaction cycles involving cleaved substrate extension. In the presence of Cu(2+) ions, the enzyme strand carries out catalytic reactions to hydrolytic cleavage of the substrate strand. The cleaved DNAzyme substrates act as primers and trigger the Klenow Fragment polymerization. Nb.BbvCI endonuclease cuts the double-stranded niking site and thus opens a new site for a new replication. The replication regenerates the complete dsDNA to initiate another cycle of nicking, polymerization and displacement. Finally the fluorescence dye, SG, inserts into the DNA double helix to generate a distinguishable fluorescence enhancement. The Cu(2+) ions act as the activator for enzymatic cascade amplification generating multiple duplex structures in the nascent product. An increasing fluorescence is observed with increasing Cu(2+) ions concentration. A good nonlinear correlation (R=0.9997) was obtained between fluorescence intensity and the cubic logarithm of the Cu(2+) ions concentration over the range 0.50-200 nM. This nonlinear response phenomenon results in an efficient improvement of the sensitivity of our current proposed assay. The activation of such enzymatic cascades through analyte-DNAzyme interactions is not only valuable to activate the cooperation of enzyme networks, but also has a substantial impact on the development of amplified DNAzyme sensors.
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Affiliation(s)
- Jing-Lin He
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China.
| | - Shuang-Li Zhu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Ping Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Pan-Pan Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Ting Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, PR China.
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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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Guan X, Lin W, Huang W. Development of a new rhodamine-based FRET platform and its application as a Cu2+ probe. Org Biomol Chem 2014; 12:3944-9. [DOI: 10.1039/c4ob00131a] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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26
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Yeh JT, Chen WC, Liu SR, Wu SP. A coumarin-based sensitive and selective fluorescent sensor for copper(ii) ions. NEW J CHEM 2014. [DOI: 10.1039/c4nj00695j] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new coumarin-derived fluorescent probe (1) exhibited significant fluorescence quenching in the presence of Cu2+ ions.
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Affiliation(s)
- Jiun-Ting Yeh
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Republic of China
| | - Wei-Chieh Chen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Republic of China
| | - Shi-Rong Liu
- 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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27
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Shi S, Wang X, Sun W, Wang X, Yao T, Ji L. Label-free fluorescent DNA biosensors based on metallointercalators and nanomaterials. Methods 2013; 64:305-14. [DOI: 10.1016/j.ymeth.2013.07.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 07/07/2013] [Indexed: 10/26/2022] Open
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