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He J, Cao X, Liu H, Liang Y, Chen H, Xiao M, Zhang Z. Power and Sensitivity Management of Carbon Nanotube Transistor Glucose Biosensors. ACS Appl Mater Interfaces 2024; 16:1351-1360. [PMID: 38150673 DOI: 10.1021/acsami.3c17309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Continuous glucose monitoring (CGM), which is significant for the daily management of diabetes, requires a low-power-consumption sensor system that can track low nanomolar levels of glucose in physiological fluids, such as sweat and tears. However, traditional electrochemical methods are limited to analytes in micromolar to millimolar ranges and entail high power consumption. Carbon nanotube (CNT) film field-effect transistors (FETs) are promising for constructing extremely sensitive biosensors, but their wide applications in CGM are limited by the strong screening effect of physiological fluids and the zero charge of glucose molecules. In this study, we demonstrate a glucose aptamer-modified CNT FET biosensor to realize a highly sensitive CGM system with sub-nW power consumption by applying a suitable gate voltage. A positive gate voltage can enlarge the effective Debye screening length at the double layer to reduce the local ion population nearby and then improve the sensitivity of the FET-based biosensors by 5 times. We construct CNT FET sensors for CGM with a limit of detection of 0.5 fM, a record dynamic range up to 109, and a power consumption down to ∼100 pW. The proposed field-modulated sensing performance scheme is applicable to other aptamer-based FET biosensors for detecting neutral or less charged molecules and opens opportunities to develop facilely modulated, highly sensitive, low-power, and noninvasive CGM systems.
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Affiliation(s)
- Jianping He
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
| | - Xianmao Cao
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
- School of Integrated Circuits, Beijing University of Posts and Telecommunications, Beijing 100876, China
| | - Haiyang Liu
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
| | - Yuqi Liang
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
| | - Hong Chen
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China
| | - Mengmeng Xiao
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
| | - Zhiyong Zhang
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China
- Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics, Department of Electronics, Peking University, Beijing 100871, China
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2
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Xiao Y, Zhang T, Zhang H. Recent advances in the peptide-based biosensor designs. Colloids Surf B Biointerfaces 2023; 231:113559. [PMID: 37738870 DOI: 10.1016/j.colsurfb.2023.113559] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/09/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
Biosensors have rapidly emerged as a high-sensitivity and convenient detection method. Among various types of biosensors, optical and electrochemical are the most commonly used. Conventionally, antibodies have been employed to ensure specific interaction between the transmission material and analytes. However, there has been increasing recognition of peptides as a promising recognition element for biosensor development in recent years. The use of peptides as recognition elements provides high level of specificity, sensitivity, and stability for the detection process. The combination of peptide designs and optical or electrochemical detection methods has significantly improved biosensor efficacy. These advancements present opportunities for developing biosensors with diverse functions that can be used to lay a strong scientific foundation for the development of personalized medicine and various other fields. This paper reviews the recent advancements in the development and application of peptide-based optical and electrochemical biosensors, as well as their prospects as a sensor type.
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Affiliation(s)
- Yue Xiao
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, MOE Key Laboratory of Molecular Biophysics, Wuhan 430074, China
| | - Ting Zhang
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, MOE Key Laboratory of Molecular Biophysics, Wuhan 430074, China
| | - Houjin Zhang
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, MOE Key Laboratory of Molecular Biophysics, Wuhan 430074, China.
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3
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Liu Y, Zhu P, Huang J, He H, Ma C, Wang K. Integrating DNA nanostructures with DNAzymes for biosensing, bioimaging and cancer therapy. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Deng Y, Liu L, Li J, Gao L. Sensors Based on the Carbon Nanotube Field-Effect Transistors for Chemical and Biological Analyses. Biosensors 2022; 12:776. [PMID: 36290914 PMCID: PMC9599861 DOI: 10.3390/bios12100776] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/11/2022] [Accepted: 09/14/2022] [Indexed: 11/26/2022]
Abstract
Nano biochemical sensors play an important role in detecting the biomarkers related to human diseases, and carbon nanotubes (CNTs) have become an important factor in promoting the vigorous development of this field due to their special structure and excellent electronic properties. This paper focuses on applying carbon nanotube field-effect transistor (CNT-FET) biochemical sensors to detect biomarkers. Firstly, the preparation method, physical and electronic properties and functional modification of CNTs are introduced. Then, the configuration and sensing mechanism of CNT-FETs are introduced. Finally, the latest progress in detecting nucleic acids, proteins, cells, gases and ions based on CNT-FET sensors is summarized.
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5
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Li C, Wang Z, Jiang Z. Ferrocene-Doped Polystyrene Nanoenzyme and DNAzyme Cocatalytic SERS Quantitative Assay of Ultratrace Pb2+. Nanomaterials 2022; 12:nano12081243. [PMID: 35457951 PMCID: PMC9027246 DOI: 10.3390/nano12081243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 12/02/2022]
Abstract
A new, stable and high-catalytic activity ferrocene-doped polystyrene nanosphere (PNFer) sol was prepared by the hydrogel procedure and characterized by electron microscopy and molecular spectroscopy. Results show that the nanosol exhibits excellent catalysis of the new indicator nanoreaction between AgNO3 and sodium formate to generate nanosilver with strong surface-enhanced Raman scattering (SERS), resonance Rayleigh scattering (RRS) and surface plasmon resonance absorption (Abs) trimode molecular spectral signals. This new nanocatalytic amplification trimode indicator reaction was coupled with the G-quadruplex DNAzyme catalytic amplification of Pb2+ aptamer to fabricate a new SERS quantitative/RRS/Abs assay platform for the determination of ultratrace amounts of Pb2+. The Pb2+ content in water samples was analyzed with satisfactory results.
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Affiliation(s)
- Chongning Li
- School of Public Health, Guilin Medical University, Guilin 541199, China; (C.L.); (Z.W.)
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
| | - Zhenghong Wang
- School of Public Health, Guilin Medical University, Guilin 541199, China; (C.L.); (Z.W.)
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
| | - Zhiliang Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541006, China
- Correspondence:
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Wang H, Zhang F, Wang Y, Shi F, Luo Q, Zheng S, Chen J, Dai D, Yang L, Tang X, Xiong B. DNAzyme-Amplified Electrochemical Biosensor Coupled with pH Meter for Ca 2+ Determination at Variable pH Environments. Nanomaterials (Basel) 2021; 12:4. [PMID: 35009954 DOI: 10.3390/nano12010004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [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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Falina S, Syamsul M, Rhaffor NA, Sal Hamid S, Mohamed Zain KA, Abd Manaf A, Kawarada H. Ten Years Progress of Electrical Detection of Heavy Metal Ions (HMIs) Using Various Field-Effect Transistor (FET) Nanosensors: A Review. Biosensors (Basel) 2021; 11:478. [PMID: 34940235 PMCID: PMC8699440 DOI: 10.3390/bios11120478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/13/2021] [Accepted: 11/17/2021] [Indexed: 05/16/2023]
Abstract
Heavy metal pollution remains a major concern for the public today, in line with the growing population and global industrialization. Heavy metal ion (HMI) is a threat to human and environmental safety, even at low concentrations, thus rapid and continuous HMI monitoring is essential. Among the sensors available for HMI detection, the field-effect transistor (FET) sensor demonstrates promising potential for fast and real-time detection. The aim of this review is to provide a condensed overview of the contribution of certain semiconductor substrates in the development of chemical and biosensor FETs for HMI detection in the past decade. A brief introduction of the FET sensor along with its construction and configuration is presented in the first part of this review. Subsequently, the FET sensor deployment issue and FET intrinsic limitation screening effect are also discussed, and the solutions to overcome these shortcomings are summarized. Later, we summarize the strategies for HMIs' electrical detection, mechanisms, and sensing performance on nanomaterial semiconductor FET transducers, including silicon, carbon nanotubes, graphene, AlGaN/GaN, transition metal dichalcogenides (TMD), black phosphorus, organic and inorganic semiconductor. Finally, concerns and suggestions regarding detection in the real samples using FET sensors are highlighted in the conclusion.
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Affiliation(s)
- Shaili Falina
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
| | - Mohd Syamsul
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
- Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia
| | - Nuha Abd Rhaffor
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Sofiyah Sal Hamid
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Khairu Anuar Mohamed Zain
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Asrulnizam Abd Manaf
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Hiroshi Kawarada
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
- The Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku, Tokyo 169-0051, Japan
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Li D, Ling S, Cheng X, Yang Z, Lv B. Development of a DNAzyme-based colorimetric biosensor assay for dual detection of Cd 2+ and Hg 2. Anal Bioanal Chem 2021; 413:7081-91. [PMID: 34585255 DOI: 10.1007/s00216-021-03677-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 10/20/2022]
Abstract
A colorimetric biosensor assay has been developed for Cd2+ and Hg2+ detection based on Cd2+-dependent DNAzyme cleavage and Hg2+-binding-induced conformational switching of the G-quadruplex fragment. Two types of multifunctional magnetic beads (Cd-MBs and Hg-MBs) were synthesized by immobilizing two functionalized DNA sequences on magnetic beads via avidin-biotin chemistry. For Cd2+ detection, Cd-MBs are used as recognition probes, which are modified with a single phosphorothioate ribonucleobase (rA) substrate (PS substrate) and a Cd2+-specific DNAzyme (Cdzyme). In the presence of Cd2+, the PS substrate is cleaved by Cdzyme, and single-stranded DNA is released as the signal transduction sequence. After molecular assembly with the other two oligonucleotides, duplex DNA is produced, and it can be recognized and cleaved by FokI endonuclease. Thus, a signal output component consisting of a G-quadruplex fragment is released, which catalyzes the oxidation of ABTS with the addition of hemin and H2O2, inducing a remarkably amplified colorimetric signal. To rule out false-positive results and reduce interference signals, Hg-MBs modified with poly-T fragments were used as Hg2+ accumulation probes during the course of Cd2+ detection. On the other hand, Hg-MBs can perform their second function in Hg2+ detection by changing the catalytic activity of the G-quadruplex/hemin DNAzyme. In the presence of Hg2+, the G-quadruplex structure in Hg-MBs is disrupted upon Hg2+ binding. In the absence of Hg2+, an intensified color change can be observed by the naked eye for the formation of intact G-quadruplex/hemin DNAzymes. The biosensor assay exhibits excellent selectivity and high sensitivity. The detection limits for Cd2+ and Hg2+ are 1.9 nM and 19.5 nM, respectively. Moreover, the constructed sensors were used to detect environmental water samples, and the results indicate that the detection system is reliable and could be further used in environmental monitoring. The design strategy reported in this study could broadly extend the application of metal ion-specific DNAzyme-based biosensors.
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Khan S, Burciu B, Filipe CDM, Li Y, Dellinger K, Didar TF. DNAzyme-Based Biosensors: Immobilization Strategies, Applications, and Future Prospective. ACS Nano 2021; 15:13943-13969. [PMID: 34524790 DOI: 10.1021/acsnano.1c04327] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Since their discovery almost three decades ago, DNAzymes have been used extensively in biosensing. Depending on the type of DNAzyme being used, these functional oligonucleotides can act as molecular recognition elements within biosensors, offering high specificity to their target analyte, or as reporters capable of transducing a detectable signal. Several parameters need to be considered when designing a DNAzyme-based biosensor. In particular, given that many of these biosensors immobilize DNAzymes onto a sensing surface, selecting an appropriate immobilization strategy is vital. Suboptimal immobilization can result in both DNAzyme detachment and poor accessibility toward the target, leading to low sensing accuracy and sensitivity. Various approaches have been employed for DNAzyme immobilization within biosensors, ranging from amine and thiol-based covalent attachment to non-covalent strategies involving biotin-streptavidin interactions, DNA hybridization, electrostatic interactions, and physical entrapment. While the properties of each strategy inform its applicability within a proposed sensor, the selection of an appropriate strategy is largely dependent on the desired application. This is especially true given the diverse use of DNAzyme-based biosensors for the detection of pathogens, metal ions, and clinical biomarkers. In an effort to make the development of such sensors easier to navigate, this paper provides a comprehensive review of existing immobilization strategies, with a focus on their respective advantages, drawbacks, and optimal conditions for use. Next, common applications of existing DNAzyme-based biosensors are discussed. Last, emerging and future trends in the development of DNAzyme-based biosensors are discussed, and gaps in existing research worthy of exploration are identified.
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Affiliation(s)
- Shadman Khan
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Brenda Burciu
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 East Gate City Boulevard, Greensboro, North Carolina 27401, United States
| | - Carlos D M Filipe
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Kristen Dellinger
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 East Gate City Boulevard, Greensboro, North Carolina 27401, United States
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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Qin M, Ma X, Fan S, Wu H, Yan W, Tian X, Lu J, Lyu M, Wang S. Rapid detection of Pseudomonas aeruginosa using a DNAzyme-based sensor. Food Sci Nutr 2021; 9:3873-3884. [PMID: 34262744 PMCID: PMC8269565 DOI: 10.1002/fsn3.2367] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 11/22/2022] Open
Abstract
In the present study, a DNAzyme was screened in vitro through the use of a DNA library and crude extracellular mixture (CEM) of Pseudomonas aeruginosa. Following eight rounds of selection, a DNAzyme termed PAE-1 was obtained, which displayed high rates of cleavage with strong specificity. A fluorescent biosensor was designed for the detection of P. aeruginosa in combination with the DNAzyme. A detection limit as low as 1.2 cfu/ml was observed. Using proteases and filtration, it was determined that the target was a protein with a molecular weight of 10 kDa-50 kDa. The DNAzyme was combined with a polystyrene board to construct a simple indicator plate sensor which produced a color that identified the target within 10 min. The results were reliable when tap water and food samples were tested. The present study provides a novel experimental strategy for the development of sensors based on a DNAzyme to rapidly detect P. aeruginosa in the field.
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Affiliation(s)
- Mingcan Qin
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Xiaoyi Ma
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Shihui Fan
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Hangjie Wu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Wanli Yan
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Xiaopeng Tian
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Jing Lu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Mingsheng Lyu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
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Wang H, Liu Y, Wang J, Xiong B, Hou X. Electrochemical impedance biosensor array based on DNAzyme-functionalized single-walled carbon nanotubes using Gaussian process regression for Cu(II) and Hg(II) determination. Mikrochim Acta 2020; 187. [DOI: 10.1007/s00604-020-4202-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/28/2020] [Indexed: 12/12/2022]
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12
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Wang H, Wang Y, Hou X, Xiong B. Bioelectronic Nose Based on Single-Stranded DNA and Single-Walled Carbon Nanotube to Identify a Major Plant Volatile Organic Compound (p-Ethylphenol) Released by Phytophthora Cactorum Infected Strawberries. Nanomaterials (Basel) 2020; 10:nano10030479. [PMID: 32155991 PMCID: PMC7153259 DOI: 10.3390/nano10030479] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/24/2020] [Accepted: 03/03/2020] [Indexed: 12/20/2022]
Abstract
The metabolic activity in plants or fruits is associated with volatile organic compounds (VOCs), which can help identify the different diseases. P-ethylphenol has been demonstrated as one of the most important VOCs released by the Phytophthora cactorum (P. cactorum) infected strawberries. In this study, a bioelectronic nose based on a gas biosensor array and signal processing model was developed for the noninvasive diagnostics of the P. cactorum infected strawberries, which could overcome the limitations of the traditional spectral analysis methods. The gas biosensor array was fabricated using the single-wall carbon nanotubes (SWNTs) immobilized on the surface of field-effect transistor, and then non-covalently functionalized with different single-strand DNAs (ssDNA) through π–π interaction. The characteristics of ssDNA-SWNTs were investigated using scanning electron microscope, atomic force microscopy, Raman, UV spectroscopy, and electrical measurements, indicating that ssDNA-SWNTs revealed excellent stability and repeatability. By comparing the responses of different ssDNA-SWNTs, the sensitivity to P-ethylphenol was significantly higher for the s6DNA-SWNTs than other ssDNA-SWNTs, in which the limit of detection reached 0.13% saturated vapor of P-ethylphenol. However, s6DNA-SWNTs can still be interfered with by other VOCs emitted by the strawberries in the view of poor selectivity. The bioelectronic nose took advantage of the different sensitivities of different gas biosensors to different VOCs. To improve measure precision, all ssDNA-SWNTs as a gas biosensor array were applied to monitor the different VOCs released by the strawberries, and the detecting data were processed by neural network fitting (NNF) and Gaussian process regression (GPR) with high accuracy.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China;
- Correspondence: or (H.W.); (B.X.); Tel.: +86-010-62811680 (B.X.)
| | - Yue Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
| | - Xiaopeng Hou
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China;
| | - Benhai Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
- Correspondence: or (H.W.); (B.X.); Tel.: +86-010-62811680 (B.X.)
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Wang X, Hu P, Wang Z, Liu Q, Xu T, Kou M, Huang K, Chen P. A Fluorescence Strategy for Silver Ion Assay via Cation Exchange Reaction and Formation of Poly(thymine)-templated Copper Nanoclusters. ANAL SCI 2019; 35:917-922. [PMID: 31061241 DOI: 10.2116/analsci.19p036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The detection of Ag+ ions in the environment and biological systems is important to both environmental monitoring and modern medicine. Herein, a novel and label-free method was developed for Ag+ detection, which utilizes a florescence strategy combining DNA-templated copper nanoclusters (Cu NCs) with cation exchange reactions. The method is primarily based on the effective detection of an Ag+-triggered cation exchange reaction and the release of free Cu2+ from CuS nanoparticles (CuS NPs), while the probe T30 serves as an effective template for the formation of fluorescence-inducing Cu NCs. Under optimal conditions, this sensing system displays high sensitivity with a 50 nM limit of detection and a range from 0 - 100 μM. In addition, the proposed method exhibits high selectivity and, therefore, was successfully applied to the analysis of real samples. Overall, these results demonstrate that our established method has advantages of design and operation simplicity, as well as cost-effectiveness.
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Affiliation(s)
- Xiu Wang
- College of Chemistry and Material Science, Sichuan Normal University
| | - Pingyue Hu
- College of Chemistry and Material Science, Sichuan Normal University
| | - Zhipeng Wang
- College of Chemistry and Material Science, Sichuan Normal University
| | - Qiuyun Liu
- College of Chemistry and Material Science, Sichuan Normal University
| | - Ting Xu
- College of Chemistry and Material Science, Sichuan Normal University
| | - Mengqian Kou
- College of Chemistry and Material Science, Sichuan Normal University
| | - Ke Huang
- College of Chemistry and Material Science, Sichuan Normal University
| | - Piaopiao Chen
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy
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Wang H, Yin Y, Gang L. Single‐gap Microelectrode Functionalized with Single‐walled Carbon Nanotubes and Pbzyme for the Determination of Pb 2+. ELECTROANAL 2019; 31:1174-81. [DOI: 10.1002/elan.201900016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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