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Wu Z, Zheng H, Bian Y, Weng J, Zeng R, Sun L. A quadratic isothermal amplification fluorescent biosensor without intermediate purification for ultrasensitive detection of circulating tumor DNA. Analyst 2024; 149:3396-3404. [PMID: 38712742 DOI: 10.1039/d4an00460d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Circulating tumor DNA (ctDNA) is an auspicious tumor biomarker released into the bloodstream by tumor cells, offering abundant information concerning cancer genes. It plays a crucial role in the early diagnosis of cancer. However, due to extremely low levels in body fluids, achieving a simple, sensitive, and highly specific detection of ctDNA remains challenging. Here, we constructed a purification-free fluorescence biosensor based on quadratic amplification of ctDNA by combining nicking enzyme mediated amplification (NEMA) and catalytic hairpin assembly (CHA) reactions. After double isothermal amplification, this biosensor achieved an impressive signal amplification of nearly 107-fold, enabling it to detect ctDNA with ultra-sensitivity. And the detection limit of this biosensor is as low as 2 aM. In addition, we explored the influence of human serum on the performance of the biosensor and found that it showed favorable sensitivity in the presence of serum. This biosensor eliminates the need for an intermediate purification step, resulting in enhanced sensitivity and convenience. Thus, our purification-free fluorescent biosensor exhibits ultra-high sensitivity when compared to other biosensors and has the potential to serve as an effective diagnostic tool for early detection of cancer.
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Affiliation(s)
- Zhaojie Wu
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China.
| | - Hongshan Zheng
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China.
| | - Yongjun Bian
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China.
| | - Jian Weng
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China.
| | - Ru Zeng
- Department of Medical Oncology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Liping Sun
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China.
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2
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Zhou Q, Ding X, Du W, Wang H, Wu S, Li J, Yang S. Multi-enzymatic systems synergize new RCA technique amplified super-long dsDNA from DNA circle. Anal Chim Acta 2024; 1291:342220. [PMID: 38280785 DOI: 10.1016/j.aca.2024.342220] [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: 12/15/2023] [Accepted: 01/05/2024] [Indexed: 01/29/2024]
Abstract
BACKGROUND In the field of DNA amplification, there are great challenges in the effectively amplify of long-chain amplification, especially amplification up to several hundred kb level. RESULTS A novel technique for the unbiased whole genome amplification from a thimbleful of DNA circles, such as low as 10 ng/ 10 μL of the circular cpDNA or low as 5 ng/ 10 μL of the plasmid, is developed, which can amplify an abundance of the whole genome sequences. Specifically, the new technique that combines rolling-amplification and triple-enzyme system presents a tightly controlled process of a series of buffers/reactions and optimized procedures, that applies from the primer-template duplexes to the Elution step. The result of this technique provides a new approach for extending RCA capacity, where it can reach 200 kb from the circular cpDNA amplification and 150 kb from the plasmid DNA amplification, that demonstrates superior breadth and evenness of genome coverage, high reproducibility, small amplification bias with the amplification efficiency. SIGNIFICANCE AND NOVELTY This new technique will develop into one of the powerful tools for isothermal DNA amplification in vitro, genome sequencing/analysis, phylogenetic analysis, physical mapping, and other molecular biology applications.
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Affiliation(s)
- Qiang Zhou
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Xianlong Ding
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Wanqing Du
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Hongjie Wang
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Shuo Wu
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Jun Li
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Shouping Yang
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture of the People's Republic of China, Nanjing Agricultural University, Nanjing, 210095, PR China; Zhongshan Biological Breeding Laboratory (ZSBBL), Nanjing Agricultural University, Nanjing, 210095, PR China; National Innovation Platform for Soybean Breeding and Industry-Education Integration, Nanjing Agricultural University, Nanjing, 210095, PR China; State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, 210095, PR China; National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, PR China; Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, PR China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, PR China.
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3
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Liu Y, Guo L, Hou M, Gao H, Ke Y, Yang H, Si F. T790M mutation upconversion fluorescence biosensor via mild ATRP strategy and site-specific DNA cleavage of restriction endonuclease. Mikrochim Acta 2024; 191:148. [PMID: 38374311 DOI: 10.1007/s00604-024-06229-z] [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] [Received: 11/06/2023] [Accepted: 01/23/2024] [Indexed: 02/21/2024]
Abstract
A unique combination of a specific nucleic acid restriction endonuclease (REase) and atom transfer radical polymerization (ATRP) signal amplification strategy was employed for the detection of T790M mutations prevalent in the adjuvant diagnosis of lung cancer. REase selectively recognizes and cleaves T790M mutation sites on double-stranded DNA formed by hybridization of a capture sequence and a target sequence. At the same time, the ATRP strategy resulted in the massive aggregation of upconverted nanoparticles (UCNPs), which significantly improved the sensitivity of the biosensor. In addition, the UCNPs have excellent optical properties and can eliminate the interference of autofluorescence in the samples, thus further improving the detection sensitivity. The proposed upconversion fluorescent biosensor is characterized by high specificity, high sensitivity, mild reaction conditions, fast response time, and a detection limit as low as 0.14 fM. The performance of the proposed biosensor is comparable to that of clinical PCR methods when applied to clinical samples. This work presents a new perspective for assisted diagnosis in the pre-intervention stage of tumor diagnostics in the early stage of precision oncology treatments.
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Affiliation(s)
- Yanju Liu
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Liang Guo
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Mengyuan Hou
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Haiyang Gao
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Yuanmeng Ke
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China.
| | - Fuchun Si
- Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China.
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4
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Wang W, Geng L, Zhang Y, Shen W, Bi M, Gong T, Hu Z, Guo C, Wang T, Sun T. Development of antibody-aptamer sandwich-like immunosensor based on RCA and Nicked-PAM CRISPR/Cas12a system for the ultra-sensitive detection of a biomarker. Anal Chim Acta 2023; 1283:341849. [PMID: 37977804 DOI: 10.1016/j.aca.2023.341849] [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: 09/12/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 11/19/2023]
Abstract
Biomarkers are the most sensitive reactants and early indicators of many kinds of diseases. The development of highly sensitive and simple techniques to quantify them is challenging. In this study, based on rolling cycle amplification (RCA) and the Nicked PAM/CRISPR-Cas12a system (RNPC) as a signal reporter, a sandwich-type method was developed using antibody@magnetic beads and aptamer for the high-sensitive detection of the C-reactive protein (CRP). The antibody-antigen (target)-aptamer sandwich-like reaction was coupled to RCA, which can produce hundreds of similar binding sites and are discriminated by CRISPR/Cas12a for signal amplification. The ultrasensitivity is achieved based on the dual-signal enhancing strategy, which involves the special recognition of aptamers, RCA, and trans-cleavage of CRISPR/Cas12a. By incorporating the CRISPR/Cas12a system with cleaved PAM, the nonspecific amplification of the RCA reaction alone was greatly reduced, and the dual signal output of RCA and Cas12a improved the detection sensitivity. Our assay can be performed only in two steps. The first step takes only 20 min of target capture, followed by a one-pot reaction, where the target concentration can be obtained by fluorescence values as long as there are 37 °C reaction conditions. Under optimal conditions, this system detected CRP with high sensitivity. The fabricated biosensor showed detection limits of 0.40 pg/mL in phosphate-buffered saline and 0.73 pg/mL in diluted human serum and a broad linear dynamic range of 1.28 pg/mL to 100 ng/mL within a total readout time of 90 min. The method could be used to perform multi-step signal amplification, which can help in the ultrasensitive detection of other proteins. Overall, the proposed biosensor might be used as an immunosensor biosensor platform.
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Affiliation(s)
- Wen Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China; School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China
| | - Lu Geng
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Yiyang Zhang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Weili Shen
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Meng Bi
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Tingting Gong
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Zhiyong Hu
- School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China
| | - Changjiang Guo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China; School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China.
| | - Tianhui Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China.
| | - Tieqiang Sun
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China.
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5
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Wu K, Kong F, Zhang J, Tang Y, Chen Y, Chao L, Nie L, Huang Z. Recent Progress in Single-Nucleotide Polymorphism Biosensors. BIOSENSORS 2023; 13:864. [PMID: 37754098 PMCID: PMC10527258 DOI: 10.3390/bios13090864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/23/2023] [Accepted: 08/26/2023] [Indexed: 09/28/2023]
Abstract
Single-nucleotide polymorphisms (SNPs), the most common form of genetic variation in the human genome, are the main cause of individual differences. Furthermore, such attractive genetic markers are emerging as important hallmarks in clinical diagnosis and treatment. A variety of destructive abnormalities, such as malignancy, cardiovascular disease, inherited metabolic disease, and autoimmune disease, are associated with single-nucleotide variants. Therefore, identification of SNPs is necessary for better understanding of the gene function and health of an individual. SNP detection with simple preparation and operational procedures, high affinity and specificity, and cost-effectiveness have been the key challenge for years. Although biosensing methods offer high specificity and sensitivity, as well, they suffer drawbacks, such as complicated designs, complicated optimization procedures, and the use of complicated chemistry designs and expensive reagents, as well as toxic chemical compounds, for signal detection and amplifications. This review aims to provide an overview on improvements for SNP biosensing based on fluorescent and electrochemical methods. Very recently, novel designs in each category have been presented in detail. Furthermore, detection limitations, advantages and disadvantages, and challenges have also been presented for each type.
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Affiliation(s)
| | | | | | | | | | | | - Libo Nie
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China; (K.W.); (F.K.); (J.Z.); (Y.T.); (Y.C.); (L.C.)
| | - Zhao Huang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China; (K.W.); (F.K.); (J.Z.); (Y.T.); (Y.C.); (L.C.)
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6
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Niu C, Liu J, Xing X, Zhang C. Exploring the Trans-Cleavage Activity with Rolling Circle Amplification for Fast Detection of miRNA. BIODESIGN RESEARCH 2023; 5:0010. [PMID: 37849464 PMCID: PMC10085249 DOI: 10.34133/bdr.0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/28/2023] [Indexed: 10/19/2023] Open
Abstract
MicroRNAs (miRNAs) are a class of endogenous short noncoding RNA. They regulate gene expression and function, essential to biological processes. It is necessary to develop an efficient detection method to determine these valuable biomarkers for the diagnosis of cancers. In this paper, we proposed a general and rapid method for sensitive and quantitative detection of miRNA by combining CRISPR-Cas12a and rolling circle amplification (RCA) with the precircularized probe. Eventually, the detection of miRNA-21 could be completed in 70 min with a limit of detection of 8.1 pM with high specificity. The reaction time was reduced by almost 4 h from more than 5 h to 70 min, which makes detection more efficient. This design improves the efficiency of CRISPR-Cas and RCA-based sensing strategy and shows great potential in lab-based detection and point-of-care test.
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Affiliation(s)
- Chenqi Niu
- MOE Key Laboratory for Industrial Biocatalysis, Institute of Biochemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - Xinhui Xing
- MOE Key Laboratory for Industrial Biocatalysis, Institute of Biochemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, China
| | - Chong Zhang
- MOE Key Laboratory for Industrial Biocatalysis, Institute of Biochemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, China
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7
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Liu J, Xie G, Lv S, Xiong Q, Xu H. Recent applications of rolling circle amplification in biosensors and DNA nanotechnology. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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8
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Schmidt K, Hageneder S, Lechner B, Zbiral B, Fossati S, Ahmadi Y, Minunni M, Toca-Herrera JL, Reimhult E, Barisic I, Dostalek J. Rolling Circle Amplification Tailored for Plasmonic Biosensors: From Ensemble to Single-Molecule Detection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55017-55027. [PMID: 36446038 PMCID: PMC9756284 DOI: 10.1021/acsami.2c14500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
We report on the tailoring of rolling circle amplification (RCA) for affinity biosensors relying on the optical probing of their surface with confined surface plasmon field. Affinity capture of the target analyte at the metallic sensor surface (e.g., by using immunoassays) is followed by the RCA step for subsequent readout based on increased refractive index (surface plasmon resonance, SPR) or RCA-incorporated high number of fluorophores (in surface plasmon-enhanced fluorescence, PEF). By combining SPR and PEF methods, this work investigates the impact of the conformation of long RCA-generated single-stranded DNA (ssDNA) chains to the plasmonic sensor response enhancement. In order to confine the RCA reaction within the evanescent surface plasmon field and hence maximize the sensor response, an interface carrying analyte-capturing molecules and additional guiding ssDNA strands (complementary to the repeating segments of RCA-generated chains) is developed. When using the circular padlock probe as a model target analyte, the PEF readout shows that the reported RCA implementation improves the limit of detection (LOD) from 13 pM to high femtomolar concentration when compared to direct labeling. The respective enhancement factor is of about 2 orders of magnitude, which agrees with the maximum number of fluorophore emitters attached to the RCA chain that is folded in the evanescent surface plasmon field by the developed biointerface. Moreover, the RCA allows facile visualizing of individual binding events by fluorescence microscopy, which enables direct counting of captured molecules. This approach offers a versatile route toward a fast digital readout format of single-molecule detection with further reduced LOD.
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Affiliation(s)
- Katharina Schmidt
- Biosensor
Technologies, AIT-Austrian Institute of
Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
- CEST
Competence Center for Electrochemical Surface Technologies, 3430 Tulln an der
Donau, Austria
| | - Simone Hageneder
- Biosensor
Technologies, AIT-Austrian Institute of
Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
| | - Bernadette Lechner
- Biosensor
Technologies, AIT-Austrian Institute of
Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
- CEST
Competence Center for Electrochemical Surface Technologies, 3430 Tulln an der
Donau, Austria
| | - Barbara Zbiral
- Department
of Nanobiotechnology, University of Natural
Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria
| | - Stefan Fossati
- Biosensor
Technologies, AIT-Austrian Institute of
Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
| | - Yasaman Ahmadi
- Molecular
Diagnostics, Health & Environment, AIT
Austrian Institute of Technology GmbH, 1210 Vienna, Austria
| | - Maria Minunni
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3-13, Sesto Fiorentino, 50019 Firenze, Italy
| | - Jose Luis Toca-Herrera
- Department
of Nanobiotechnology, University of Natural
Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Nanobiotechnology, University of Natural
Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria
| | - Ivan Barisic
- Molecular
Diagnostics, Health & Environment, AIT
Austrian Institute of Technology GmbH, 1210 Vienna, Austria
| | - Jakub Dostalek
- Biosensor
Technologies, AIT-Austrian Institute of
Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria
- FZU-Institute
of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
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9
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Target-Responsive Template Structure Switching-Mediated Exponential Rolling Circle Amplification for the Direct and Sensitive Detection of MicroRNA. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00071-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Zhang Y, Xue T, Cheng L, Wang J, Shen R, Zhang J. Smartphone-assisted colorimetric biosensor for on-site detection of Cr3+ ion analysis. Anal Chim Acta 2022; 1199:339603. [DOI: 10.1016/j.aca.2022.339603] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 11/27/2022]
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11
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Sensory analysis of hepatitis B virus DNA for medicinal clinical diagnostics based on molybdenum doped ZnO nanowires field effect transistor biosensor; a comparative study to PCR test results. Anal Chim Acta 2022; 1195:339442. [DOI: 10.1016/j.aca.2022.339442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/13/2021] [Accepted: 01/03/2022] [Indexed: 12/13/2022]
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12
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Martorell S, Maquieira Á, Tortajada-Genaro LA. A genosensor for detecting single-point mutations in dendron chips after blocked recombinase polymerase amplification. Analyst 2022; 147:2180-2188. [DOI: 10.1039/d2an00160h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dendron–probe conjugates were effectively immobilized on chip surfaces, improving assay sensitivity and simplifying coupling reactions. Combined with an isothermal amplification, the array method accurately detects single-base changes.
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Affiliation(s)
- Sara Martorell
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
| | - Ángel Maquieira
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
- Chemistry department, Universitat Politècnica de València, Valencia, Spain
| | - Luis A. Tortajada-Genaro
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
- Chemistry department, Universitat Politècnica de València, Valencia, Spain
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13
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Gao YP, Huang KJ, Wang FT, Hou YY, Xu J, Li G. Recent advances in biological detection with rolling circle amplification: design strategy, biosensing mechanism, and practical applications. Analyst 2022; 147:3396-3414. [DOI: 10.1039/d2an00556e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rolling circle amplification (RCA) is a simple and isothermal DNA amplification technique that is used to generate thousands of repeating DNA sequences using circular templates under the catalysis of DNA polymerase.
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Affiliation(s)
- Yong-ping Gao
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, PR China
- Analysis and Testing Center, Xinyang College, Xinyang 464000, PR China
| | - Ke-Jing Huang
- Key Laboratory of Guangxi Colleges and Universities for Food Safety and Pharmaceutical Analytical Chemistry, School of Chemistry and Chemical and Engineering, Guangxi Minzu University, Nanning 530008, PR China
| | - Fu-Ting Wang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, PR China
| | - Yang-Yang Hou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, PR China
| | - Jing Xu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, PR China
| | - Guoqiang Li
- International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, PR China
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14
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Photothermal mediated rolling circle amplification toward specific and direct in situ mRNA detection. Biosens Bioelectron 2021; 192:113507. [PMID: 34330037 DOI: 10.1016/j.bios.2021.113507] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 07/01/2021] [Accepted: 07/13/2021] [Indexed: 12/11/2022]
Abstract
Rolling circle amplification (RCA) had the prospect of assisting clinic diagnosis with advantage in in situ mRNA detection at single cell level. However, for direct mRNA detection, RCA had relatively low detection specificity and efficiency. Here, we introduced 4-(10, 15, 20-Triphenylporphyrin-5-yl)phenylamine (TPP) modified Au nanoparticle (Au-TPP) to improve the specificity of in-situ RCA. Through photothermal effect, Au-TPP acted as the specific heat source upon irradiation of 635 nm laser. The photothermal mediated RCA would be initiated only when the Au-TPP as well as the padlock anchored adjacently on the same target mRNA. Furthermore, we introduced 'C' form target-specific oligonucleotide linker probes to make generic padlock and Au-TPP for different mRNA targets, so that for a new mRNA target one does not have to redesign the padlock and the Au-TPP probe. By these strategies, we successfully developed a specific and photothermal mediated hyperbranched rolling circle amplification for direct in situ mRNA detection, suitable for both formalin-fixed paraffin-embedded (FFPE) tissue section and frozen tissue section.
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15
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Khalil I, Hashem A, Nath AR, Muhd Julkapli N, Yehye WA, Basirun WJ. DNA/Nano based advanced genetic detection tools for authentication of species: Strategies, prospects and limitations. Mol Cell Probes 2021; 59:101758. [PMID: 34252563 DOI: 10.1016/j.mcp.2021.101758] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/20/2021] [Accepted: 07/06/2021] [Indexed: 10/20/2022]
Abstract
Authentication, detection and quantification of ingredients, and adulterants in food, meat, and meat products are of high importance these days. The conventional techniques for the detection of meat species based on lipid, protein and DNA biomarkers are facing challenges due to the poor selectivity, sensitivity and unsuitability for processed food products or complex food matrices. On the other hand, DNA based molecular techniques and nanoparticle based DNA biosensing strategies are gathering huge attention from the scientific communities, researchers and are considered as one of the best alternatives to the conventional strategies. Though nucleic acid based molecular techniques such as PCR and DNA sequencing are getting greater successes in species detection, they are still facing problems from its point-of-care applications. In this context, nanoparticle based DNA biosensors have gathered successes in some extent but not to a satisfactory stage to mark with. In recent years, many articles have been published in the area of progressive nucleic acid-based technologies, however there are very few review articles on DNA nanobiosensors in food science and technology. In this review, we present the fundamentals of DNA based molecular techniques such as PCR, DNA sequencing and their applications in food science. Moreover, the in-depth discussions of different DNA biosensing strategies or more specifically electrochemical and optical DNA nanobiosensors are presented. In addition, the significance of DNA nanobiosensors over other advanced detection technologies is discussed, focusing on the deficiencies, advantages as well as current challenges to ameliorate with the direction for future development.
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Affiliation(s)
- Ibrahim Khalil
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Healthcare Pharmaceuticals Ltd., Rajendrapur, Gazipur, Bangladesh
| | - Abu Hashem
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Microbial Biotechnology Division, National Institute of Biotechnology, Ganakbari, Ashulia, Savar, Dhaka, 1349, Bangladesh
| | - Amit R Nath
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, 518055, China
| | - Nurhidayatullaili Muhd Julkapli
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Wageeh A Yehye
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Wan Jeffrey Basirun
- Nanotechnology and Catalysis Research Center (NANOCAT), Institute for Advanced Studies (IAS), Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Department of Chemistry, Universiti Malaya, Malaysia
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16
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The mechanism and improvements to the isothermal amplification of nucleic acids, at a glance. Anal Biochem 2021; 631:114260. [PMID: 34023274 DOI: 10.1016/j.ab.2021.114260] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/15/2021] [Accepted: 05/18/2021] [Indexed: 01/08/2023]
Abstract
A comparative review of the most common isothermal methods is provided. In the last two decades, the challenge of using isothermal amplification systems as an alternate to the most extensive and long-standing nucleic acids-amplifying method-the polymerase chain reaction-has arisen. The main advantage of isothermal amplification is no requirement for expensive laboratory equipment for thermal cycling. Considerable efforts have been made to improve the current techniques of nucleic acid amplification and the development of new approaches based on the main drawbacks of each method. The most important and challenging goal was to achieve a low-cost, straightforward system that is rapid, specific, accurate, and sensitive.
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17
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Cassedy A, Parle-McDermott A, O’Kennedy R. Virus Detection: A Review of the Current and Emerging Molecular and Immunological Methods. Front Mol Biosci 2021; 8:637559. [PMID: 33959631 PMCID: PMC8093571 DOI: 10.3389/fmolb.2021.637559] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/01/2021] [Indexed: 12/14/2022] Open
Abstract
Viruses are ubiquitous in the environment. While many impart no deleterious effects on their hosts, several are major pathogens. This risk of pathogenicity, alongside the fact that many viruses can rapidly mutate highlights the need for suitable, rapid diagnostic measures. This review provides a critical analysis of widely used methods and examines their advantages and limitations. Currently, nucleic-acid detection and immunoassay methods are among the most popular means for quickly identifying viral infection directly from source. Nucleic acid-based detection generally offers high sensitivity, but can be time-consuming, costly, and require trained staff. The use of isothermal-based amplification systems for detection could aid in the reduction of results turnaround and equipment-associated costs, making them appealing for point-of-use applications, or when high volume/fast turnaround testing is required. Alternatively, immunoassays offer robustness and reduced costs. Furthermore, some immunoassay formats, such as those using lateral-flow technology, can generate results very rapidly. However, immunoassays typically cannot achieve comparable sensitivity to nucleic acid-based detection methods. Alongside these methods, the application of next-generation sequencing can provide highly specific results. In addition, the ability to sequence large numbers of viral genomes would provide researchers with enhanced information and assist in tracing infections.
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Affiliation(s)
- A. Cassedy
- School of Biotechnology, Dublin City University, Dublin, Ireland
| | | | - R. O’Kennedy
- School of Biotechnology, Dublin City University, Dublin, Ireland
- Hamad Bin Khalifa University, Doha, Qatar
- Qatar Foundation, Doha, Qatar
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18
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Recent Advances of Hepatitis B Detection towards Paper-Based Analytical Devices. ScientificWorldJournal 2021; 2021:6643573. [PMID: 33727897 PMCID: PMC7937490 DOI: 10.1155/2021/6643573] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 02/03/2023] Open
Abstract
Hepatitis B virus (HBV) still remains a major global public health problem. One-half to one-third of the total HBV infected people died due to late detection of HBV. Serological antigen and viral HBV detections can help in the diagnosis, referral, and treatment of HBV. Available methods for HBV detection mostly used bulky instruments. Miniaturization of devices for HBV detection has been started by narrowing down the size of the devices. Several methods have also been proposed to increase the selectivity and sensitivity of the miniaturized methods, such as sandwich recognition of the biomarkers and the use of nano- to micro-sized materials. This review presents recent HBV detections in the last two decades from laboratory-based instruments towards microfluidic paper-based analytical devices (µPADs) for point-of-care testing (POCT) purposes. Early and routine analysis to detect HBV as early as possible could be achieved by POCT, especially for areas with limited access to a central laboratory and/or medical facilities.
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19
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Zhong Y, Zhan J, Xu G, Chen Y, Qin Q, Liao X, Ma S, Yang Z, Cai Y. Enzyme‐Instructed Self‐Assembly Enabled Monomer–Excimer Transition to Construct Higher Ordered Luminescent Supramolecular Assembly for Activity‐based Bioimaging. Angew Chem Int Ed Engl 2021; 60:8121-8129. [PMID: 33410570 DOI: 10.1002/anie.202014278] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/20/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Yuanzhi Zhong
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Jie Zhan
- Shunde Hospital (The First People's Hospital of Shunde, Foshan) Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering Southern Medical University Guangzhou 510515 China
| | - Guanghui Xu
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Yumiao Chen
- Key Laboratory of Bioactive Materials Ministry of Education State Key Laboratory of Medicinal Chemical Biology College of Life Sciences Nankai University Tianjin 300071 China
| | - Qin Qin
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Xu Liao
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Shaodan Ma
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Zhimou Yang
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Key Laboratory of Bioactive Materials Ministry of Education State Key Laboratory of Medicinal Chemical Biology College of Life Sciences Nankai University Tianjin 300071 China
| | - Yanbin Cai
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
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20
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Zhong Y, Zhan J, Xu G, Chen Y, Qin Q, Liao X, Ma S, Yang Z, Cai Y. Enzyme‐Instructed Self‐Assembly Enabled Monomer–Excimer Transition to Construct Higher Ordered Luminescent Supramolecular Assembly for Activity‐based Bioimaging. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014278] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yuanzhi Zhong
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Jie Zhan
- Shunde Hospital (The First People's Hospital of Shunde, Foshan) Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering Southern Medical University Guangzhou 510515 China
| | - Guanghui Xu
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Yumiao Chen
- Key Laboratory of Bioactive Materials Ministry of Education State Key Laboratory of Medicinal Chemical Biology College of Life Sciences Nankai University Tianjin 300071 China
| | - Qin Qin
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Xu Liao
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Shaodan Ma
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
| | - Zhimou Yang
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University Guangzhou 510515 China
- Key Laboratory of Bioactive Materials Ministry of Education State Key Laboratory of Medicinal Chemical Biology College of Life Sciences Nankai University Tianjin 300071 China
| | - Yanbin Cai
- Guangdong Provincial Biomedical Engineering Technology Research Center for Cardiovascular Diseases Department of Cardiology and Laboratory of Heart Center Zhujiang Hospital Southern Medical University Guangzhou 510280 China
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21
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He Y, Liu Y, Cheng L, Yang Y, Qiu B, Guo L, Wang Y, Lin Z, Hong G. Highly Reproducible and Sensitive Electrochemiluminescence Biosensors for HPV Detection Based on Bovine Serum Albumin Carrier Platforms and Hyperbranched Rolling Circle Amplification. ACS APPLIED MATERIALS & INTERFACES 2021; 13:298-305. [PMID: 33382593 DOI: 10.1021/acsami.0c20742] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Most DNA-based electrochemiluminescence (ECL) biosensors are established through the self-assembly of thiolated single-stranded DNA (ssDNA) probes on the Au electrode surface. Because of this random assembly process, a significant discrepancy exists in the distribution of a modified DNA film on different electrodes, which greatly affects the reproducibility of a biosensor. In this study, a porous bovine serum albumin (BSA) layer was first modified on the electrode surface, which can improve the position distribution and spatial orientation of the self-assembly ssDNA probe. It was then coupled with hyperbranched rolling circle amplification to develop the high-reproducibility-and-sensitivity ECL biosensor for human papillomavirus 16 E6 and E7 oncogene detection. In the presence of the target DNA, the surface of the electrode accumulates abundant amplified products through reaction, which contain double-stranded DNA (dsDNA) fragments of different lengths, followed by plentiful dichlorotris (1,10-phenanthroline) ruthenium(II) hydrate (Ru(phen)32+, acting as an ECL indicator) insertion into grooves of dsDNA fragments, and a strong signal can be detected. There is a linear relationship between the signal and the target concentration range from 10 fM to 15 pM, and the detection limit is 7.6 fM (S/N = 3). After the BSA modification step, the relative standard deviation was reduced from 9.20 to 3.96%, thereby achieving good reproducibility. The proposed ECL strategy provides a new method for constructing high-reproducibility-and-sensitivity ECL biosensors.
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Affiliation(s)
- Yinghao He
- Department of Laboratory Medicine, Xiamen Key Laboratory of Genetic Testing, The First Affiliated Hospital of Xiamen University, Xiamen 361003, People's Republic of China
| | - Yinhuan Liu
- Department of Laboratory Medicine, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou 350007, People's Republic of China
| | - Lingjun Cheng
- Department of Laboratory Medicine, Xiamen Key Laboratory of Genetic Testing, The First Affiliated Hospital of Xiamen University, Xiamen 361003, People's Republic of China
| | - Yuanyuan Yang
- Department of Laboratory Medicine, Xiamen Key Laboratory of Genetic Testing, The First Affiliated Hospital of Xiamen University, Xiamen 361003, People's Republic of China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China
| | - Longhua Guo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China
| | - Yan Wang
- Department of Cardiology, The Affiliated Cardiovascular Hospital of Xiamen University, Medical College of Xiamen University, Xiamen 361004, People's Republic of China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China
| | - Guolin Hong
- Department of Laboratory Medicine, Xiamen Key Laboratory of Genetic Testing, The First Affiliated Hospital of Xiamen University, Xiamen 361003, People's Republic of China
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22
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Xu L, Duan J, Chen J, Ding S, Cheng W. Recent advances in rolling circle amplification-based biosensing strategies-A review. Anal Chim Acta 2020; 1148:238187. [PMID: 33516384 DOI: 10.1016/j.aca.2020.12.062] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/09/2020] [Accepted: 12/28/2020] [Indexed: 01/12/2023]
Abstract
Rolling circle amplification (RCA) is an efficient enzymatic isothermal reaction that using circular probe as a template to generate long tandem single-stranded DNA or RNA products under the initiation of short DNA or RNA primers. As a simplified derivative of natural rolling circle replication which synthesizes copies of circular nucleic acids molecules such as plasmids, RCA amplifies the circular template rapidly without thermal cycling and finds various applications in molecular biology. Compared with other amplification strategies, RCA has many obvious advantages. Firstly, because of the strict complementarity required in ligation of a padlock probe, it endows the RCA reaction with high specificity and can even be utilized to distinguish single base mismatches. Secondly, through the introduction of multiple primers, exponential amplification can be achieved easily and leads to a good sensitivity. Thirdly, RCA products can be customized by manipulating circular templates to generate functional nucleic acids such as aptamer, DNAzymes and restriction enzyme sites. Moreover, the RCA has good biocompatibility and is especially suitable for in situ detection. Therefore, RCA has attracted considerable attention as an efficient and potential tool for highly sensitive detection of biomarkers. Herein, we comprehensively introduce the fundamental principles of RCA technology, summarize it from three aspects including initiation mode, amplification mode and signal output mode, and discuss the recent application of RCA-based biosensor in this review.
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Affiliation(s)
- Lulu Xu
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Jiaxin Duan
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Junman Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China.
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China.
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23
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Zhang W, Liu K, Zhang P, Cheng W, Zhang Y, Li L, Yu Z, Chen M, Chen L, Li L, Zhang X. All-in-one approaches for rapid and highly specific quantifcation of single nucleotide polymorphisms based on ligase detection reaction using molecular beacons as turn-on probes. Talanta 2020; 224:121717. [PMID: 33378999 DOI: 10.1016/j.talanta.2020.121717] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/17/2020] [Accepted: 09/28/2020] [Indexed: 11/27/2022]
Abstract
Rapid, simple, specific and sensitive approaches for single nucleotide polymorphisms (SNPs) detection are essential for clinical diagnosis. In this study, all-in-one approaches, consisting of the whole detection process including ligase detection reaction (LDR) and real time quantitative polymerase chain reaction performed in one PCR tube by a one-step operation on a real-time PCR system using molecular beacon (MB) as turn-on probe, were developed for rapid, simple, specific and sensitive quantifcation of SNPs. High specificity of the all-in-one approach was achieved by using the LDR, which employs a thermostable and single-base discerning Hifi Taq DNA ligase to ligate adjacently hybridized LDR-specific probes. In addition, a highly specific probe, MB, was used to detect the products of all-in-one approach, which doubly enhances the specificity of the all-in-one approach. The linear dynamic range and high sensitivity of mutant DNA (MutDNA) and wild-type DNA (WtDNA) all-in-one approaches for the detection of MutDNA and WtDNA were studied in vitro, with a broad linear dynamic range of 0.1 fM to 1 pM and detection limits of 65.3 aM and 31.2 aM, respectively. In addition, the MutDNA and WtDNA all-in-one approaches were able to accurately detect allele frequency changes as low as 0.1%. In particular, the epidermal growth factor receptor T790M MutDNA frequency in the tissue of five patients with non-small cell lung cancer detected by all-in-one approaches were in agreement with clinical detection results, indicating the excellent practicability of the developed approaches for the quantification of SNPs in real samples. In summary, the developed all-in-one approaches exhibited promising potential for further applications in clinical diagnosis.
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Affiliation(s)
- Wancun Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China; Department of Pediatric Oncology Surgery, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Kangbo Liu
- Biological Testing Room, Henan Medical Equipment Inspection Institute, Henan Medical Equipment Inspection and Testing Engineering Technology Research Center, Henan Medical Equipment Biotechnology and Application Engineering Research Center, Zhengzhou, 450000, China
| | - Pin Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Weyland Cheng
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Yaodong Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Linfei Li
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Zhidan Yu
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China
| | - Mengmeng Chen
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China.
| | - Lin Chen
- Henan Joint International Research Laboratory of Drug Discovery of Small Molecules, Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Huanghe Science and Technology College, 450063, Zhengzhou, China.
| | - Lifeng Li
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China; Departments of Neonatology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, China.
| | - Xianwei Zhang
- Department of Pediatric Oncology Surgery, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, 450018, China.
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24
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Chen L, Zhang Y, Xia Q, Luo F, Guo L, Qiu B, Lin Z. Fluorescence biosensor for DNA methyltransferase activity and related inhibitor detection based on methylation-sensitive cleavage primer triggered hyperbranched rolling circle amplification. Anal Chim Acta 2020; 1122:1-8. [PMID: 32503739 DOI: 10.1016/j.aca.2020.04.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 04/20/2020] [Accepted: 04/25/2020] [Indexed: 11/29/2022]
Abstract
Highly sensitive and selective detection of DNA adenine methylation methyltransferase (Dam MTase) activity is essential for clinical diagnosis and treatment as Dam MTase can catalyze DNA methylation and has a profound effect on gene regulation. In this study, a fluorescence biosensor has been developed for label-free detection of Dam MTase activity via methylation-sensitive cleavage primers triggered hyperbranched rolling circle amplification (HRCA). A hairpin DNA probe (HP) with a Dam MTase specific recognition sequence on the stem acting as a substrate has been designed. This substrate probe can be methylated by the target in the system and subsequently cleaved by DpnI, which results in the release of the primer release probe (RP) and hence in turn triggers the subsequent HRCA reaction. As the HRCA products contain many double-strand DNA (dsDNA) with different lengths, and the SYBR Green I can be embedded in the dsDNA to produce a strong fluorescence signal. However, in the absence of the target, the presence of the probe HP in the form of a hairpin cannot induce the HRCA reaction, and only weak fluorescence intensity can be detected. Under the optimized conditions, the fluorescence of the system has a linear relationship with the logarithm of the concentration of Dam MTase in the range of 2.5-70 U/mL with a detection limit of 1.8 U/mL. The Dam MTase can be well distinguished from other MTase analogs. The developed sensor was applied to detect target in serum and E. coli cell lysate, and the standard recovery rates were in the range of 96%-105%. The results showed that this method has great potential for assessing Dam MTase activity in complex biological samples. In addition, the method has been applied to detect the related inhibitors with high efficiency.
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Affiliation(s)
- Liping Chen
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Ying Zhang
- Central Laboratory, Fujian Provincial Key Laboratory of Precision Medicine for Cancer, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - Qian Xia
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Fang Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Longhua Guo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
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25
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Bodulev OL, Sakharov IY. Isothermal Nucleic Acid Amplification Techniques and Their Use in Bioanalysis. BIOCHEMISTRY. BIOKHIMIIA 2020; 85:147-166. [PMID: 32093592 PMCID: PMC7223333 DOI: 10.1134/s0006297920020030] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 12/16/2022]
Abstract
Recently, there has been a rapid progress in the development of techniques for isothermal amplification of nucleic acids as an alternative to polymerase chain reaction (PCR). The advantage of these methods is that the nucleic acids amplification can be carried out at constant temperature, unlike PCR, which requires cyclic temperature changes. Moreover, isothermal amplification can be conducted directly in living cells. This review describes the principles of isothermal amplification techniques and demonstrates their high efficiency in designing new highly sensitive detection methods of nucleic acids and enzymes involved in their modifications. The data on successful application of isothermal amplification methods for the analysis of cells and biomolecules with the use of DNA/RNA aptamers are presented.
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Affiliation(s)
- O L Bodulev
- Lomonosov Moscow State University, Department of Chemistry, Moscow, 119991, Russia
| | - I Yu Sakharov
- Lomonosov Moscow State University, Department of Chemistry, Moscow, 119991, Russia.
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26
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Hu Y, Tan C, Lin X, Lai Z, Zhang X, Lu Q, Feng N, Yang D, Weng L. Exonuclease III-Regulated Target Cyclic Amplification-Based Single Nucleotide Polymorphism Detection Using Ultrathin Ternary Chalcogenide Nanosheets. Front Chem 2020; 7:844. [PMID: 31921768 PMCID: PMC6913186 DOI: 10.3389/fchem.2019.00844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 11/19/2019] [Indexed: 12/30/2022] Open
Abstract
Herein, we report that the ternary chalcogenide nanosheet exhibits different affinity toward oligonucleotides with different lengths and efficiently quenches the fluorescence of dye-labeled DNA probes. Based on these findings, as a proof-of-concept application, the ternary chalcogenide nanosheet is used as a target cyclic amplification biosensor, showing high specificity in discriminating single-base mismatch. This simple strategy is fast and sensitive for the single nucleotide polymorphism detection. Ultralow detection limit of unlabeled target (250 fM) and high discrimination ratio (5%) in the mixture of perfect match (mutant-type) and single-base mismatch (wild-type) target are achieved. This sensing method is extensively compatible for the single nucleotide polymorphism detection in clinical samples, making it a promising tool for the mutation-based clinical diagnostic and genomic research.
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Affiliation(s)
- Yanling Hu
- School of Electrical and Control Engineering, Nanjing Polytechnic Institute, Nanjing, China.,Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, China
| | - Chaoliang Tan
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Xin Lin
- School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Zhuangchai Lai
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Xiao Zhang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Qipeng Lu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Ning Feng
- Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, China
| | - Dongliang Yang
- Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, China.,School of Physical and Mathematical Sciences, Nanjing Tech University (NanjingTech), Nanjing, China
| | - Lixing Weng
- Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, China
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27
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Enzyme-free fluorescence microarray for determination of hepatitis B virus DNA based on silver nanoparticle aggregates-assisted signal amplification. Anal Chim Acta 2019; 1077:297-304. [PMID: 31307722 DOI: 10.1016/j.aca.2019.05.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/25/2019] [Accepted: 05/27/2019] [Indexed: 01/28/2023]
Abstract
In this study, we designed a fluorescence enhancement strategy based on silver nanoparticle (AgNP) aggregates for the detection of hepatitis B virus DNA sequences. AgNPs were functioned with recognition probes (Cy3-probe) and hybrid probes (Oligomer-A and Oligomer-B). The presence of target DNA mediated the formation of sandwich complexes between the immobilized capture probes and the functionalized AgNPs, which was followed by hybridization-induced formation of AgNP aggregates. The fluorescent intensity could be extremely amplified by both the increasing number of fluorophores and metal enhanced fluorescence (MEF) effect. Under optimal conditions, this method achieved a detection limit of 50 fM which was 1560-fold lower than that of un-enhanced fluorescent assays. It was illustrated that the HBV DNA concentrations ranging from 100 fM to 10 nM had a good log-linear correlation with the corresponding fluorescent intensity (R = 0.991). Moreover, this method had high specificity both for distinguishing single-base mismatches and identifying target DNA under the interference of genomic DNA. This fluorescent microarray had high-throughput analytical potential and could apply to many other disease diagnoses.
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Zhang C, Chen G, Wang Y, Zhou J, Li C. Establishment and application of hyperbranched rolling circle amplification coupled with lateral flow dipstick for the sensitive detection of Karenia mikimotoi. HARMFUL ALGAE 2019; 84:151-160. [PMID: 31128799 DOI: 10.1016/j.hal.2019.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/23/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
The dinoflagellate Karenia mikimotoi is a noxious and harmful algal bloom (HAB)-forming microalga. Establishing a rapid, accurate, and sensitive method of detecting this harmful alga is necessary to provide warnings of imminent HABs through field monitoring. Here, an isothermal amplification technique combined with a rapid analytical method for nucleic acid-based amplified products, i.e., hyperbranched rolling circle amplification (HRCA) coupled with lateral flow dipstick (LFD), hereafter denoted as HRCA-LFD, was established to detect K. mikimotoi. The HRCA-LFD assay relied on a padlock probe (PLP) targeting DNA template and an LFD probe targeting PLP. The sequenced internal transcribed spacer of K. mikimotoi through molecular cloning was used as the target of PLP. The optimized HRCA conditions was determined to be as follows: PLP concentration, 20 pM; ligation temperature, 65 °C; ligation time, 10 min; amplification temperature, 61 °C; and amplification time, 30 min. The developed HRCA-LFD assay was specific for K. mikimotoi, displaying no cross-reactivity with other common microalgae. Sensitivity-comparison tests indicated that HRCA-LFD assay was 100-fold more sensitive than PCR, with a detection limit of 0.1 cell mL-1 when used to analyze spiked field samples. The analysis with field samples also indicated that HRCA-LFD assay was suitable for samples with a target cell density range of 1-1000 cells mL-1. All of these results suggested that HRCA-LFD assay is an alternative method for the sensitive and reliable detection of K. mikimotoi from marine water samples.
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Affiliation(s)
- Chunyun Zhang
- School of Marine Sciences, Ningbo University, Ningbo, 315211, PR China; School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai 264209, PR China
| | - Guofu Chen
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai 264209, PR China.
| | - Yuanyuan Wang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Weihai 264209, PR China
| | - Jin Zhou
- Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University, Ningbo, 315211, PR China.
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