1
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Wang R, Zhang Y, Ma QDY, Wu L. Recent advances of small molecule detection in nanopore sensing. Talanta 2024; 277:126323. [PMID: 38810384 DOI: 10.1016/j.talanta.2024.126323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/04/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Due to its advantages of label-free and highly sensitive, the resistive pulse sensing with a nanopore has recently become even more potent for the discrimination of analytes in single molecule level. Generally, a transient interruption of ion current originated from the captured molecule passing through a nanopore will provide the rich information on the structure, charge and translocation dynamics of the analytes. Therefore, nanopore sensors have been widely used in the fields of DNA sequencing, protein recognition, and the portable detection of varied macromolecules and particles. However, the conventional nanopore devices are still lack of sufficient selectivity and sensitivity to distinguish more metabolic molecules involving ATP, glucose, amino acids and small molecular drugs because it is hard to receive a large number of identifiable signals with the fabricated pores comparable in size to small molecules for nanopore sensing. For all this, a series of innovative strategies developed in the past decades have been summarized in this review, including host-guest recognition, engineering alteration of protein channel, the introduction of nucleic acid aptamers and various delivery carriers integrating signal amplification sections based on the biological and solid nanopore platforms, to achieve the high resolution for the small molecules sensing in micro-nano environment. These works have greatly enhanced the powerful sensing capabilities and extended the potential application of nanopore sensors.
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Affiliation(s)
- Runyu Wang
- College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210046, China
| | - Yinuo Zhang
- College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210046, China
| | - Qianli D Y Ma
- College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210046, China.
| | - Lingzhi Wu
- College of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210046, China.
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2
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Ahmed SA, Liu Y, Xiong T, Zhao Y, Xie B, Pan C, Ma W, Yu P. Iontronic Sensing Based on Confined Ion Transport. Anal Chem 2024; 96:8056-8077. [PMID: 38663001 DOI: 10.1021/acs.analchem.4c01354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Affiliation(s)
- Saud Asif Ahmed
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ying Liu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100190, China
| | - Tianyi Xiong
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100190, China
| | - Yueru Zhao
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100190, China
| | - Boyang Xie
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100190, China
| | - Cong Pan
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wenjie Ma
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100190, China
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3
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Bao M, Waitkus J, Liu L, Chang Y, Xu Z, Qin P, Chen J, Du K. Micro- and nanosystems for the detection of hemorrhagic fever viruses. LAB ON A CHIP 2023; 23:4173-4200. [PMID: 37675935 DOI: 10.1039/d3lc00482a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Hemorrhagic fever viruses (HFVs) are virulent pathogens that can cause severe and often fatal illnesses in humans. Timely and accurate detection of HFVs is critical for effective disease management and prevention. In recent years, micro- and nano-technologies have emerged as promising approaches for the detection of HFVs. This paper provides an overview of the current state-of-the-art systems for micro- and nano-scale approaches to detect HFVs. It covers various aspects of these technologies, including the principles behind their sensing assays, as well as the different types of diagnostic strategies that have been developed. This paper also explores future possibilities of employing micro- and nano-systems for the development of HFV diagnostic tools that meet the practical demands of clinical settings.
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Affiliation(s)
- Mengdi Bao
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
| | - Jacob Waitkus
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
| | - Li Liu
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
| | - Yu Chang
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
| | - Zhiheng Xu
- Department of Industrial Engineering, Rochester Institute of Technology, Rochester, NY, USA
| | - Peiwu Qin
- Institute of Biopharmaceutical and Health Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Juhong Chen
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Ke Du
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, USA.
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4
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Liu WW, Zhang XL, Wang X, Chai YQ, Yuan R. Self-accelerated DNA walker mediated electrochemical biosensor for rapid and ultrasensitive detection of microRNA. Anal Chim Acta 2023; 1274:341447. [PMID: 37455065 DOI: 10.1016/j.aca.2023.341447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/19/2023] [Accepted: 05/28/2023] [Indexed: 07/18/2023]
Abstract
Herein, we developed a novel three-dimensional (3D) self-accelerated DNA walker (SADW) which progressively expedite walking rate by unlocking the more walking arm continuously in walker process to construct electrochemical biosensor for ultrasensitive detection of microRNA. Particularly, we skillfully introduced a target analogue sequence in the double-loop hairpin, which could be released in the walking process of SADW, then rapidly activating more silenced walking strands to achieve the continuous self-acceleration, resulting in the expedited reaction rate. Surprisingly, the average reaction rate of SADW was quite higher than that of traditional 3D self-circulating DNA walkers (DW) under pretty low target miRNA concentration, which is ascribed to the outstanding acceleration process of the SADW, readily conquering the major predicaments of DW in detecting target with traces concentration: slow reaction rate and low sensitivity. This way, the elaborated SADW is favorably applied in the ultrasensitive and rapid detection of miRNA-21 in tumor cancer cell lysates with a detection limit down to 5.81 aM which was far from lower than the detection limit of DW. This approach develops the novel generation of widespread strategy for the applications in clinic diagnose, biosensing assay, and DNA nanobiotechnology.
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Affiliation(s)
- Wei-Wei Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xiao-Long Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xin Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Ya-Qin Chai
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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5
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Roelen Z, Briggs K, Tabard-Cossa V. Analysis of Nanopore Data: Classification Strategies for an Unbiased Curation of Single-Molecule Events from DNA Nanostructures. ACS Sens 2023; 8:2809-2823. [PMID: 37436112 PMCID: PMC10913896 DOI: 10.1021/acssensors.3c00751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Nanopores are versatile single-molecule sensors that are being used to sense increasingly complex mixtures of structured molecules with applications in molecular data storage and disease biomarker detection. However, increased molecular complexity presents additional challenges to the analysis of nanopore data, including more translocation events being rejected for not matching an expected signal structure and a greater risk of selection bias entering this event curation process. To highlight these challenges, here, we present the analysis of a model molecular system consisting of a nanostructured DNA molecule attached to a linear DNA carrier. We make use of recent advances in the event segmentation capabilities of Nanolyzer, a graphical analysis tool provided for nanopore event fitting, and describe approaches to the event substructure analysis. In the process, we identify and discuss important sources of selection bias that emerge in the analysis of this molecular system and consider the complicating effects of molecular conformation and variable experimental conditions (e.g., pore diameter). We then present additional refinements to existing analysis techniques, allowing for improved separation of multiplexed samples, fewer translocation events rejected as false negatives, and a wider range of experimental conditions for which accurate molecular information can be extracted. Increasing the coverage of analyzed events within nanopore data is not only important for characterizing complex molecular samples with high fidelity but is also becoming essential to the generation of accurate, unbiased training data as machine-learning approaches to data analysis and event identification continue to increase in prevalence.
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Affiliation(s)
- Zachary Roelen
- Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Kyle Briggs
- Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Chen X, Zhou S, Wang Y, Zheng L, Guan S, Wang D, Wang L, Guan X. Nanopore Single-molecule Analysis of Biomarkers: Providing Possible Clues to Disease Diagnosis. Trends Analyt Chem 2023; 162:117060. [PMID: 38106545 PMCID: PMC10722900 DOI: 10.1016/j.trac.2023.117060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Biomarker detection has attracted increasing interest in recent years due to the minimally or non-invasive sampling process. Single entity analysis of biomarkers is expected to provide real-time and accurate biological information for early disease diagnosis and prognosis, which is critical to the effective disease treatment and is also important in personalized medicine. As an innovative single entity analysis method, nanopore sensing is a pioneering single-molecule detection technique that is widely used in analytical bioanalytical fields. In this review, we overview the recent progress of nanopore biomarker detection as new approaches to disease diagnosis. In highlighted studies, nanopore was focusing on detecting biomarkers of different categories of communicable and noncommunicable diseases, such as pandemic Covid-19, AIDS, cancers, neurologic diseases, etc. Various sensitive and selective nanopore detecting strategies for different types of biomarkers are summarized. In addition, the challenges, opportunities, and direction for future development of nanopore-based biomarker sensors are also discussed.
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Affiliation(s)
- Xiaohan Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Shuo Zhou
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Yunjiao Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Ling Zheng
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Sarah Guan
- Hinsdale Central High School, Hinsdale, IL 60521, USA
| | - Deqiang Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
| | - Liang Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- Chongqing School, University of Chinese Academy of Science, Chongqing, 400714, China
- Chongqing Key Laboratory of Intelligent Medicine Engineering for Hepatopancreatobiliary Diseases, University of Chinese Academy of Sciences, Chongqing 401147, China
| | - Xiyun Guan
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL, 60616, USA
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7
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Li H, Li Y, Gui C, Chen D, Chen L, Luo L, Huang G, Yuan Y, He R, Xia F, Wang J. Bare glassy nanopore for length-resolution reading of PCR amplicons from various pathogenic bacteria and viruses. Talanta 2023; 256:124275. [PMID: 36701856 DOI: 10.1016/j.talanta.2023.124275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/16/2022] [Accepted: 01/14/2023] [Indexed: 01/18/2023]
Abstract
In this study, it is confirmed that without addition of organic solvent and embedding polymer hydrogel into glass nanopore, bare glass nanopore can faithfully measure various lengths of DNA duplexes from 200 to 3000 base pairs with 200 base pairs resolution, showing well-separated peak amplitudes of blockage currents. Furthermore, motivated by this readout capability of duplex DNA, amplicons from Polymerase Chain Reaction (PCR) amplification are straightforwardly discriminated by bare glassy nanopore without fluorescent labeling. Except simultaneous discrimination of up to 7 different segments of the same lambda genome, various pathogenic bacteria and viruses including SARS-CoV-2 and its mutants in clinical samples can be discriminated at high resolution. Moreover, quantitative measurement of PCR amplicons is obtained with detection range spanning from 0.75 aM to 7.5 pM and detection limit of 7.5 aM, which reveals that bare glass nanopore can faithfully disclose PCR results without any extra labeling.
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Affiliation(s)
- Huizhen Li
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Yunhui Li
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Cenlin Gui
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Daqi Chen
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Lanfang Chen
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Le Luo
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Guobao Huang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin, Guangxi, 537000, China
| | - Yang Yuan
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China
| | - Rong He
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, 510440, China.
| | - Fan Xia
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, Hubei, 430074, China.
| | - Jiahai Wang
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China.
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8
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Yi W, Zhang C, Zhang Q, Zhang C, Lu Y, Yi L, Wang X. Solid-State Nanopore/Nanochannel Sensing of Single Entities. Top Curr Chem (Cham) 2023; 381:13. [PMID: 37103594 DOI: 10.1007/s41061-023-00425-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/07/2023] [Indexed: 04/28/2023]
Abstract
Solid-state nanopores/nanochannels, with their high stability, tunable geometry, and controllable surface chemistry, have recently become an important tool for constructing biosensors. Compared with traditional biosensors, biosensors constructed with solid-state nanopores/nanochannels exhibit significant advantages of high sensitivity, high specificity, and high spatiotemporal resolution in the detection single entities (such as single molecules, single particles, and single cells) due to their unique nanoconfined space-induced target enrichment effect. Generally, the solid-state nanopore/nanochannel modification method is the inner wall modification, and the detection principles are the resistive pulse method and the steady-state ion current method. During the detection process, solid-state nanopore/nanochannel is easily blocked by single entities, and interfering substances easily enter the solid-state nanopore/nanochannel to generate interference signals, resulting in inaccurate measurement results. In addition, the problem of low flux in the detection process of solid-state nanopore/nanochannel, these defects limit the application of solid-state nanopore/nanochannel. In this review, we introduce the preparation and functionalization of solid-state nanopore/nanochannel, the research progress in the field of single entities sensing, and the novel sensing strategies on solving the above problems in solid-state nanopore/nanochannel single-entity sensing. At the same time, the challenges and prospects of solid-state nanopore/nanochannel for single-entity electrochemical sensing are also discussed.
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Affiliation(s)
- Wei Yi
- School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi, 562400, People's Republic of China
| | - Chuanping Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Qianchun Zhang
- School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi, 562400, People's Republic of China
| | - Changbo Zhang
- School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi, 562400, People's Republic of China
| | - Yebo Lu
- College of Information Science and Engineering, Jiaxing University, Jiaxing, 314001, People's Republic of China.
| | - Lanhua Yi
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China.
| | - Xingzhu Wang
- School of Electrical Engineering, University of South China, Hengyang, 421001, People's Republic of China.
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Wang J, Chen L, Gui C, Zhu J, Zhu B, Zhu Z, Li Y, Chen D. A nanopore counter for highly sensitive evaluation of DNA methylation and its application in in vitro diagnostics. Analyst 2023; 148:1492-1499. [PMID: 36880569 DOI: 10.1039/d3an00035d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
DNA methylation has been considered an essential epigenetic biomarker for diagnosing various diseases, such as cancer. A simple and sensitive way for DNA methylation level detection is necessary. Inspired by the label-free and ultra-high sensitivity of solid-state nanopores to double-stranded DNA (dsDNA), we proposed a nanopore counter for evaluating DNA methylation by integrating a dual-restriction endonuclease digestion strategy coupled with polymerase chain reaction (PCR) amplification. Simultaneous application of BstUI/HhaI endonucleases can ensure the full digestion of the unmethylated target DNA but shows no effect on the methylated ones. Therefore, only the methylated DNA remains intact and can trigger the subsequent PCR reaction, producing a large quantity of fixed-length PCR amplicons, which can be directly detected through glassy nanopores. By simply counting the event rate of the translocation signals, the concentration of methylated DNA can be determined to range from 1 aM to 0.1 nM, with the detection limit as low as 0.61 aM. Moreover, a 0.01% DNA methylation level was successfully distinguished. The strategy of using the nanopore counter for highly sensitive DNA methylation evaluation would be a low-cost but reliable alternative in the analysis of DNA methylation.
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Affiliation(s)
- Jiahai Wang
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Lanfang Chen
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Cenlin Gui
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Jianji Zhu
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Baian Zhu
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Zhuobin Zhu
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Yunhui Li
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Daqi Chen
- School of Chemistry and Chemical Engineering, School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China.
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Wang Y, Li Y, Zhou X, Zhang W, Zhang S, Xi D. Detection of Tobacco Bacterial Wilt Caused by Ralstonia solanacearum by Combining Polymerase Chain Reaction with an α-Hemolysin Nanopore. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:332. [PMID: 36678085 PMCID: PMC9863824 DOI: 10.3390/nano13020332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Tobacco bacterial wilt is a serious disease caused by the soil-borne bacterium Ralstonia solanacearum (R. solanacearum). Herein, a rapid and purification-free α-hemolysin (α-HL) nanopore-sensing strategy based on polymerase chain reaction (PCR) and lambda exonuclease digestion was established to detect R. solanacearum. A 198-nucleotide-long single-stranded DNA was obtained via asymmetric PCR or the lambda exonuclease-mediated digestion of the PCR product. The DNA fragment produced unique long-lived, current-blocking signals when it passed through the α-HL nanopore. This sensing approach can allow for the determination of R. solanacearum in tobacco samples and can be conveniently extended to other DNA monitoring because of the extremely wide range of PCR applications.
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Affiliation(s)
- Ying Wang
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Life Science, Linyi University, Linyi 276005, China
| | - Yusen Li
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Life Science, Linyi University, Linyi 276005, China
| | - Xin Zhou
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Life Science, Linyi University, Linyi 276005, China
| | - Wenna Zhang
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
| | - Shusheng Zhang
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Life Science, Linyi University, Linyi 276005, China
| | - Dongmei Xi
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, College of Life Science, Linyi University, Linyi 276005, China
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