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Li Y, Liu K, Wang B, Liu Z, Yang C, Wang J, Ma X, Li H, Sun C. Engineering DNAzyme strategies for fluorescent detection of lead ions based on RNA cleavage-propelled signal amplification. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129712. [PMID: 35952430 DOI: 10.1016/j.jhazmat.2022.129712] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/21/2022] [Accepted: 08/02/2022] [Indexed: 05/07/2023]
Abstract
Based on the high recognition ability and flexible programmability of GR5 DNAzyme, two fluorescent biosensors were engineered for amplified detection of Pb2+ via incorporating Ti3C2TX MXenes and embedding 2-aminopurine (2-AP), respectively. The quencher-required approach relied on the DNA affinity and fluorescence quenching ability of Ti3C2TX MXenes. Benefiting from the low background signal modulated by Ti3C2TX MXenes, the sensitive determination of Pb2+ was achieved in the linear range of 0.2-10 ng mL-1 with the limit of detection (LOD) of 0.05 ng mL-1. The quencher-free approach combined the fluorescent trait of 2-AP embedded in DNA structure, and the RNA cleavage-propelled digestion process of Exonuclease I (Exo I) for signal amplification, indicating the sensitive detection of Pb2+ with the LOD as low as 0.02 ng mL-1 in the linear range of 0.1-10 ng mL-1. Both DNAzyme assays exhibited simple procedures, favorable specificity, rapid analysis, and satisfactory application in standard reference materials (lead in drinking water) and spiked water samples. The two fluorescent biosensors established in this work would not only provide theoretic fundament for DNA adsorption of Ti3C2TX MXenes and the design of 2-AP-embedded DNAzyme assays, but also hold a great potential for on-site monitoring of lead pollution in water samples.
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Affiliation(s)
- Ying Li
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Kai Liu
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Boxu Wang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Zheng Liu
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Chuanyu Yang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Junyang Wang
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Xinyue Ma
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China
| | - Hongxia Li
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China.
| | - Chunyan Sun
- Department of Food Quality and Safety, Jilin University, Changchun 130062, China.
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Liu P, Hao R, Sun W, Lin Z, Jing T. One-pot synthesis of copper nanocluster/Tb-MOF composites for the ratiometric fluorescence detection of Cu 2. LUMINESCENCE 2022; 37:1793-1799. [PMID: 35946061 DOI: 10.1002/bio.4359] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/01/2022] [Accepted: 08/06/2022] [Indexed: 11/06/2022]
Abstract
The increasing degradation of ecosystems due to heavy metal residues has led to environment and food contamination, prompting the development of convenient platforms for monitoring heavy metals. Here, a new dual-emission fluorescent sensor CuNCs@Tb@UiO-66-(COOH)2 for the detection of copper ions (Cu2+ ) has been synthesized by one-pot encapsulation of Tb (III) and glutathione-stabilized copper nanoclusters (CuNCs) into metal-organic frameworks (MOFs) UiO-66-(COOH)2 . In this ratiometric sensor, the fluorescence intensity of Tb3+ decreased significantly upon the addition of Cu2+ , while that of CuNCs showed good stability, together with an apparent color change. Therefore, ratiometric fluorescence detection of Cu2+ can be accomplished by measuring the ratio of the fluorescence intensity at the 450 nm (F450 ) wavelength of CuNCs to the 548 nm (F548 ) emission of Tb3+ in the fluorescence spectra of the CuNCs@Tb@UiO-66-(COOH)2 suspension. Moreover, the obtained fluorescent probe shows good results in the detection of actual samples. This work can provide the basis of method for the exploration of ratiometric fluorescence and visual sensors of trace pollutants analysis in complicated samples.
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Affiliation(s)
- Piaotong Liu
- College of Chemical Engineering, Qinghai University, Xining, China
| | - Rusi Hao
- College of Chemical Engineering, Qinghai University, Xining, China
| | - Wenliang Sun
- College of Chemical Engineering, Qinghai University, Xining, China
| | - Ziyi Lin
- College of Chemical Engineering, Qinghai University, Xining, China
| | - Tianfeng Jing
- College of Chemical Engineering, Qinghai University, Xining, China
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DNAzyme-Amplified Electrochemical Biosensor Coupled with pH Meter for Ca 2+ Determination at Variable pH Environments. NANOMATERIALS 2021; 12:nano12010004. [PMID: 35009954 PMCID: PMC8746961 DOI: 10.3390/nano12010004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 02/07/2023]
Abstract
For more than 50% of multiparous cows, it is difficult to adapt to the sudden increase in calcium demand for milk production, which is highly likely to cause hypocalcemia. An electrochemical biosensor is a portable and efficient method to sense Ca2+ concentrations, but biomaterial is easily affected by the pH of the analyte solution. Here, an electrochemical biosensor was fabricated using a glassy carbon electrode (GCE) and single-walled carbon nanotube (SWNT), which amplified the impedance signal by changing the structure and length of the DNAzyme. Aiming at the interference of the pH, the electrochemical biosensor (GCE/SWNT/DNAzyme) was coupled with a pH meter to form an electrochemical device. It was used to collect data at different Ca2+ concentrations and pH values, and then was processed using different mathematical models, of which GPR showed higher detecting accuracy. After optimizing the detecting parameters, the electrochemical device could determine the Ca2+ concentration ranging from 5 μM to 25 mM, with a detection limit of 4.2 μM at pH values ranging from 4.0 to 7.5. Finally, the electrochemical device was used to determine the Ca2+ concentrations in different blood and milk samples, which can overcome the influence of the pH.
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Cui X, Abd El-Aty AM, Zhang C, Xu L, Liu H, Jia H, Wang Y, Cao Z, Salvador JP, She Y, Jin F, Wang J, Jin M, Hammock BD. Enhanced Bio-Barcode Immunoassay Using Droplet Digital PCR for Multiplex Detection of Organophosphate Pesticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11131-11141. [PMID: 34494438 DOI: 10.1021/acs.jafc.1c03216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A bio-barcode immunoassay based on droplet digital polymerase chain reaction (ddPCR) was developed to simultaneously quantify triazophos, parathion, and chlorpyrifos in apple, cucumber, cabbage, and pear. Three gold nanoparticle (AuNP) probes and magnetic nanoparticle (MNP) probes were prepared, binding through their antibodies with the three pesticides in the same tube. Three groups of primers, probes, templates, and three antibodies were designed to ensure the specificity of the method. Under the optimal conditions, the detection limits (expressed as IC10) of triazophos, parathion, and chlorpyrifos were 0.22, 0.45, and 4.49 ng mL-1, respectively. The linear ranges were 0.01-20, 0.1-100, and 0.1-500 ng mL-1, and the correlation coefficients (R2) were 0.9661, 0.9834, and 0.9612, respectively. The recoveries and relative standard deviations (RSDs) were in the ranges of 75.5-98.9 and 8.3-16.7%. This study provides the first insights into the ddPCR for the determination of organophosphate pesticides. It also laid the foundation for high-throughput detection of other small molecules.
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Affiliation(s)
- Xueyan Cui
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - A M Abd El-Aty
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, P. R. China
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt
- Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum 25240, Turkey
| | - Chan Zhang
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Lingyuan Xu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Haijin Liu
- Inspection and Testing Center of Agricultural and Livestock Products of Tibet, Lhasa 850000, P. R. China
| | - Huiyan Jia
- Ningbo Academy of Agricultural Sciences, Ningbo 315040, Zhengjiang, P. R. China
| | - Yuanshang Wang
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Zhen Cao
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - J-Pablo Salvador
- Nanobiotechnology for Diagnostics Group, Instituto de Química Avanzada de Cataluña, IQAC-CSIC, C/ Jordi Girona, 18-26, 08034 Barcelona, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Avenida Monforte de Lemos, 3-5, Pavillion 11, Floor 0, 28029 Madrid, Spain
| | - Yongxin She
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Fen Jin
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Jing Wang
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Maojun Jin
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Science, Beijing 100081, P. R. China
| | - Bruce D Hammock
- Department of Entomology & Nematology and the UC Davis Comprehensive Cancer Center, University of California, Davis, Davis, California 95616, United States
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Abstract
This article provides a comprehensive review of biosensing with DNAzymes, providing an overview of different sensing applications while highlighting major progress and seminal contributions to the field of portable biosensor devices and point-of-care diagnostics. Specifically, the field of functional nucleic acids is introduced, with a specific focus on DNAzymes. The incorporation of DNAzymes into bioassays is then described, followed by a detailed overview of recent advances in the development of in vivo sensing platforms and portable sensors incorporating DNAzymes for molecular recognition. Finally, a critical perspective on the field, and a summary of where DNAzyme-based devices may make the biggest impact are provided.
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Affiliation(s)
- Erin M McConnell
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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Ma X, wang C, Qin M, Tian X, Fan S, Zu H, Lyu M, Wang S. Rapid detection of Aeromonas hydrophila with a DNAzyme-based sensor. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Wu G, Li Y, Zhang J, Yun W, Xiong Z, Yang L. Simultaneous and ultra-sensitive detection of Cu 2+ and Mg 2+ in wine and beer based on dual DNA tweezers and entropy-driven three-dimensional DNA nanomachine. Food Chem 2021; 358:129835. [PMID: 33933951 DOI: 10.1016/j.foodchem.2021.129835] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
Simultaneous and ultra-sensitive detection strategy of Cu2+ and Mg2+ in wine and beer was developed based on dual DNA tweezers and entropy-driven three-dimensional DNA nanomachine. The dual DNAzyme can simultaneously respond to two kinds of metal ions and cause two kinds of "turn-on" fluorescent signals. The working principle of this strategy was indirectly proven. In addition, some key experimental parameters were also optimized. Under the optimum conditions, the limit of detection was 10 pM for Cu2+ and 2 nM for Mg2+ respectively which was significantly improved by entropy driven amplification. This strategy also showed good selectivity and specificity. It was successfully used to detect of Cu2+ and Mg2+ in wine and beer with 5.26% to 9.12% of relative standard deviation and 90.4% to 110.5% of recoveries.
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Affiliation(s)
- Ge Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yuting Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jiafeng Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Wen Yun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Zhengwei Xiong
- School of Biological and Chemical Engineering, Innovation Center of Lipid Resources and Children's Daily Chemicals, Chongqing University of Education, Chongqing 400067, China.
| | - Lizhu Yang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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Yan F, Sun X, Zhang Y, Jiang Y, Chen L, Ma T, Chen L. A Schiff base probe for competitively sensing Cu2+ and cysteine through hydrolysis, complexation, and cyclization. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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10
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Cui X, Jin M, Zhang C, Du P, Chen G, Qin G, Jiang Z, Zhang Y, Li M, Liao Y, Wang Y, Cao Z, Yan F, Abd El-Aty AM, Wang J. Enhancing the Sensitivity of the Bio-barcode Immunoassay for Triazophos Detection Based on Nanoparticles and Droplet Digital Polymerase Chain Reaction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12936-12944. [PMID: 31670953 DOI: 10.1021/acs.jafc.9b05147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
An ultrasensitive bio-barcode competitive immunoassay method based on droplet digital polymerase chain reaction (ddPCR) was developed for the determination of triazophos. Gold nanoparticles (AuNPs) were coated with monoclonal antibodies (mAbs) and complementary double-stranded DNA (dsDNA), which included bio-barcode DNA and thiol-capped DNA. Magnetic nanoparticle (MNP) probes were constructed by modifying the MNPs with ovalbumin-hapten conjugates (OVA-hapten). The target pesticide and OVA-hapten on the surface of the MNP probes competed with the AuNP probes simultaneously, and then the bio-barcode DNA was released for quantification by ddPCR. The concentration of released DNA was inversely proportional to the concentration of pesticide to be tested. Under the optimum conditions, the competitive immunoassay exhibited a wide linear range of 0.01-20 ng/mL and a low detection limit of 0.002 ng/mL. Spike recovery tests were carried out using apple, rice, cabbage, and cucumber samples to verify the feasibility of the method. The recovery and relative standard deviations (RSDs) of the technique ranged from 76.9 to 94.4% and from 10.8 to 19.9%, respectively. To further validate the results, a linear correlation analysis was performed between the proposed method and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Consequently, the bio-barcode immunoassay based on nanoparticles and ddPCR, an ultrasensitive method, showed great potential for the determination of target pesticides in real samples.
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Affiliation(s)
- Xueyan Cui
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Maojun Jin
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Chan Zhang
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Pengfei Du
- Institute of Agro-Food Science and Technology , Shandong Academy of Agricultural Sciences , Jinan , Shandong 250100 , People's Republic of China
| | - Ge Chen
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Guoxin Qin
- Agro-Product Quality Safety and Testing Technology Research Institute , Guangxi Academy of Agricultural Sciences , Nanning , Guangxi 530007 , People's Republic of China
| | - Zejun Jiang
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Yudan Zhang
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Mingjie Li
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Yun Liao
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Yuanshang Wang
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Zhen Cao
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
| | - Feiyan Yan
- Agro-Product Quality Safety and Testing Technology Research Institute , Guangxi Academy of Agricultural Sciences , Nanning , Guangxi 530007 , People's Republic of China
| | - A M Abd El-Aty
- Department of Pharmacology, Faculty of Veterinary Medicine , Cairo University , 12211 Giza , Egypt
- Department of Medical Pharmacology, Medical Faculty , Ataturk University , 25240 Erzurum , Turkey
| | - Jing Wang
- Institute of Quality Standard and Testing Technology for Agro-Products , Chinese Academy of Agricultural Science , Beijing 100081 , People's Republic of China
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Yang Y, Fang Z, Yu YY, Wang YZ, Naraginti S, Yong YC. A mediator-free whole-cell electrochemical biosensing system for sensitive assessment of heavy metal toxicity in water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:1071-1080. [PMID: 31070587 DOI: 10.2166/wst.2019.101] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A bioelectrochemical sensing system (BES) based on electroactive bacteria (EAB) has been used as a new and promising tool for water toxicity assessment. However, most EAB can reduce heavy metals, which usually results in low toxicity response. Herein, a starvation pre-incubation strategy was developed which successfully avoided the metal reduction during the toxicity sensing period. By integrating this starvation pre-incubation procedure with the amperometric BES, a sensitive, robust and mediator-free biosensing method for heavy metal toxicity assessment was developed. Under the optimized conditions, the IC50 (half maximal inhibitory concentration) values for Cu2+, Ni2+, Cd2+, and Cr6+ obtained were 0.35, 3.49, 6.52, 2.48 mg L-1, respectively. The measurement with real water samples also suggested this method was reliable for practical application. This work demonstrates that it is feasible to use EAB for heavy metal toxicity assessment and provides a new tool for water toxicity warning.
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Affiliation(s)
- Yuan Yang
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail:
| | - Zhen Fang
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail:
| | - Yang-Yang Yu
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail:
| | - Yan-Zhai Wang
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail:
| | - Saraschandra Naraginti
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail:
| | - Yang-Chun Yong
- Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China E-mail: ; Zhenjiang Key Laboratory for Advanced Sensing Materials and Devices, School of Mechanical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
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Zhang T, Liu C, Zhou W, Jiang K, Yin C, Liu C, Zhang Z, Li H. Ultrasensitive Detection of Pb 2+ Based on a DNAzyme and Digital PCR. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:3528345. [PMID: 30867973 PMCID: PMC6379836 DOI: 10.1155/2019/3528345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/30/2018] [Accepted: 10/10/2018] [Indexed: 06/09/2023]
Abstract
In this study, an ultrasensitive detection method for aqueous Pb2+ based on digital polymerase chain reaction (dPCR) technology and a Pb2+-dependent DNAzyme was developed. In the presence of Pb2+, the Gr-5 DNAzyme was activated and catalyzed the hydrolytic cleavage of the substrate strand, resulting in an increase in the amount of template DNA available for dPCR and a resultant change in the number of droplets showing a positive signal. Moreover, the detection system was found to be sensitive and stable in environmental sample detection. In summary, an ultrasensitive quantitative detection method for Pb2+ within environmental substrates was established.
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Affiliation(s)
- Tao Zhang
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Cong Liu
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Wuping Zhou
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Keming Jiang
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Chenyu Yin
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Cong Liu
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
- School of Engineering Science, University of Science and Technology, Hefei, China
| | - Zhiqiang Zhang
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Haiwen Li
- Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
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Xu W, Zhu L, Shao X, Huang K, Luo Y. An electrochemical biosensor based on nucleic acids enzyme and nanochannels for detecting copper (II) ion. Biosens Bioelectron 2018; 120:168-174. [DOI: 10.1016/j.bios.2018.08.033] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/11/2018] [Accepted: 08/13/2018] [Indexed: 12/18/2022]
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McGhee CE, Loh KY, Lu Y. DNAzyme sensors for detection of metal ions in the environment and imaging them in living cells. Curr Opin Biotechnol 2017; 45:191-201. [PMID: 28458112 DOI: 10.1016/j.copbio.2017.03.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 12/17/2022]
Abstract
The on-site and real-time detection of metal ions is important for environmental monitoring and for understanding the impact of metal ions on human health. However, developing sensors selective for a wide range of metal ions that can work in the complex matrices of untreated samples and cells presents significant challenges. To meet these challenges, DNAzymes, an emerging class of metal ion-dependent enzymes selective for almost any metal ion, have been functionalized with fluorophores, nanoparticles and other imaging agents and incorporated into sensors for the detection of metal ions in environmental samples and for imaging metal ions in living cells. Herein, we highlight the recent developments of DNAzyme-based fluorescent, colorimetric, SERS, electrochemical and electrochemiluminscent sensors for metal ions for these applications.
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Affiliation(s)
- Claire E McGhee
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Kang Yong Loh
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
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