1
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Jie G, Gao X, Ge J, Li C. Multifunctional DNA nanocage with CdTe quantum dots for fluorescence detection of human 8-oxoG DNA glycosylase 1 and doxorubicin delivery to cancer cells. Mikrochim Acta 2019; 186:85. [DOI: 10.1007/s00604-018-3199-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 12/20/2018] [Indexed: 01/02/2023]
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2
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Li Q, Zhou D, Pan J, Liu Z, Chen J. Ultrasensitive and simple fluorescence biosensor for detection of the mecA gene of Staphylococcus aureus by using an exonuclease III-assisted cascade signal amplification strategy. Analyst 2019; 143:5670-5675. [PMID: 30402649 DOI: 10.1039/c8an01805g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In this work, a label-free fluorescence biosensor for ultrasensitive and simple detection of the mecA gene of Staphylococcus aureus was proposed by using an exonuclease III (Exo III)-assisted cascade signal amplification strategy. The 3' end-extruding hairpin probe (HP) acted as the target recognition element and the caged G-quadruplex was used as the signal reporter. Without the mecA gene, the HP probe cannot be digested by Exo III, as the G-rich sequences are blocked in the stem of the HP probe. In the presence of the mecA gene, the hybridization of the mecA gene with the 3' end-extruding HP probe triggers the digestion reaction of Exo III, liberating the mecA gene and the mecA gene analogue. Both the released mecA gene and the mecA gene analogue can hybridize with other HP probes and activate another round of the cleavage reaction. Consequently, the released free G-quadruplex is "lit up" by N-methylmesoporphyrin IX (NMM), displaying a dramatically enhanced fluorescence intensity. This sensing platform showed a high sensitivity towards the mecA gene with a detection limit as low as 2.4 fM without any labelling, immobilization, or washing steps. The designed sensing system also exhibits excellent selectivity for the mecA gene in the presence of other interfering DNA sequences. Furthermore, the presented biosensor is robust and has been successfully applied for the detection of the mecA gene in a real food sample with satisfactory results. Owing to its simplicity, cost-effectiveness and ultrasensitivity, our proposed sensing strategy provides a promising platform for the detection of other genes by substituting the target-recognition element.
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Affiliation(s)
- Qiong Li
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
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3
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Yang D, Tang Y, Guo Z, Chen X, Miao P. Proximity aptasensor for protein detection based on an enzyme-free amplification strategy. MOLECULAR BIOSYSTEMS 2018; 13:1936-1939. [PMID: 28796267 DOI: 10.1039/c7mb00458c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel electrochemical aptasensor for the detection of trace protein is proposed based on proximity binding-induced strand displacement and hybridization chain reaction. This method is proven to be highly selective and has potential practical utility, and offers new opportunities for the convenient detection of proteins with an enzyme-free amplification process.
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Affiliation(s)
- Dawei Yang
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China.
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4
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Chen P, Wu P, Zhang Y, Chen J, Jiang X, Zheng C, Hou X. Strand Displacement-Induced Enzyme-Free Amplification for Label-Free and Separation-Free Ultrasensitive Atomic Fluorescence Spectrometric Detection of Nucleic Acids and Proteins. Anal Chem 2016; 88:12386-12392. [PMID: 28193041 DOI: 10.1021/acs.analchem.6b03633] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In previous work, we have developed a simple strategy for a label-free and separation-free bioassay for target DNA and protein, with the limit of detection at the nM level only. Herein, taking advantage of atomic fluorescence spectrometric detection of metal ions and amplification of DNA, a label-free and separation-free ultrasensitive homogeneous DNA analytical platform for target DNA and protein detection was developed on the basis of an enzyme-free strand displacement signal amplification strategy for dramatically improved detectability. Using the T-Hg2+-T hairpin structure as the probe, the target DNA binds with HP (T-Hg2+-T hairpin structure) and released the Hg2+ first; then, the P4 (help DNA) hybridizes with target-P3 complex and free the target DNA, which is used to trigger another reaction cycle. The cycling use of the target amplifies the mercury atomic fluorescence intensity for ultrasensitive DNA detection. Moreover, the enzyme-free strand displacement signal amplification analytical system was further extended for protein detection by introducing an aptamer-P2 arched structure with thrombin as a model analyte. The current homogeneous strategy provides an ultrasensitive AFS detection of DNA and thrombin down to the 0.3 aM and 0.1 aM level, respectively, with a high selectivity. This strategy could be a promising unique alternative for nucleic acid and protein assay.
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Affiliation(s)
- Piaopiao Chen
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Peng Wu
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Yuxiang Zhang
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Junbo Chen
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Xiaoming Jiang
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Chengbin Zheng
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Xiandeng Hou
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
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5
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Kausar A, Osman EA, Gadzikwa T, Gibbs-Davis JM. The presence of a 5'-abasic lesion enhances discrimination of single nucleotide polymorphisms while inducing an isothermal ligase chain reaction. Analyst 2016; 141:4272-7. [PMID: 27326790 DOI: 10.1039/c6an00614k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lesion-induced DNA amplification (LIDA) has been employed in the detection of single nucleotide polymorphisms (SNPs). Due to the presence of the proximal abasic lesion, T4 DNA ligase exhibits greater intolerance to basepair mismatches when compared with mismatch ligation in the absence of the abasic lesion. Moreover the presence of the abasic group also results in an isothermal ligase chain reaction enabling SNP detection with great discrimination and sensitivity. Specifically, at forty minutes, the ratio of amplified product from the matched and mismatched initiated reactions are 7-12 depending on the mismatch. The ease of implementation of our method is demonstrated by real-time analysis of DNA amplification using a fluorescent plate reader.
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Affiliation(s)
- Abu Kausar
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
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6
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Sun Y, Zhao C, Yan Z, Ren J, Qu X. Simple and sensitive microbial pathogen detection using a label-free DNA amplification assay. Chem Commun (Camb) 2016; 52:7505-8. [PMID: 27210898 DOI: 10.1039/c6cc02672a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
By the combination of quaternized magnetic nanoparticles and a label-free exonuclease III-assisted DNA amplification assay, we report a simple and facile strategy for the convenient and highly sensitive detection of microbial pathogens, with a detection limit of down to 50 cells mL(-1).
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Affiliation(s)
- Yuhuan Sun
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
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7
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Yang D, Ning L, Gao T, Ye Z, Li G. Enzyme-free dual amplification strategy for protein assay by coupling toehold-mediated DNA strand displacement reaction with hybridization chain reaction. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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8
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Hun X, Xie G, Luo X. Scaling up an electrochemical signal with a catalytic hairpin assembly coupling nanocatalyst label for DNA detection. Chem Commun (Camb) 2015; 51:7100-3. [DOI: 10.1039/c5cc00680e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new strategy for the electrochemical detection of DNA based on catalytic hairpin assembly combined with nanocatalyst label-based redox cycling reaction signal amplification. A superior detection limit of 0.3 aM toward DNA was achieved.
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Affiliation(s)
- Xu Hun
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
| | - Guoliang Xie
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
| | - Xiliang Luo
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
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9
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Yan L, Zhou J, Zheng Y, Gamson AS, Roembke BT, Nakayama S, Sintim HO. Isothermal amplified detection of DNA and RNA. MOLECULAR BIOSYSTEMS 2014; 10:970-1003. [PMID: 24643211 DOI: 10.1039/c3mb70304e] [Citation(s) in RCA: 282] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review highlights various methods that can be used for a sensitive detection of nucleic acids without using thermal cycling procedures, as is done in PCR or LCR. Topics included are nucleic acid sequence-based amplification (NASBA), strand displacement amplification (SDA), loop-mediated amplification (LAMP), Invader assay, rolling circle amplification (RCA), signal mediated amplification of RNA technology (SMART), helicase-dependent amplification (HDA), recombinase polymerase amplification (RPA), nicking endonuclease signal amplification (NESA) and nicking endonuclease assisted nanoparticle activation (NENNA), exonuclease-aided target recycling, Junction or Y-probes, split DNAZyme and deoxyribozyme amplification strategies, template-directed chemical reactions that lead to amplified signals, non-covalent DNA catalytic reactions, hybridization chain reactions (HCR) and detection via the self-assembly of DNA probes to give supramolecular structures. The majority of these isothermal amplification methods can detect DNA or RNA in complex biological matrices and have great potential for use at point-of-care.
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Affiliation(s)
- Lei Yan
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
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10
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Zhang Z, Luo L, Chen G, Ding Y, Deng D, Fan C. Tryptamine functionalized reduced graphene oxide for label-free DNA impedimetric biosensing. Biosens Bioelectron 2014; 60:161-6. [DOI: 10.1016/j.bios.2014.03.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 03/13/2014] [Accepted: 03/31/2014] [Indexed: 11/30/2022]
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11
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Knez K, Spasic D, Janssen KPF, Lammertyn J. Emerging technologies for hybridization based single nucleotide polymorphism detection. Analyst 2014; 139:353-70. [PMID: 24298558 DOI: 10.1039/c3an01436c] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Detection of single nucleotide polymorphisms (SNPs) is a crucial challenge in the development of a novel generation of diagnostic tools. Accurate detection of SNPs can prove elusive, as the impact of a single variable nucleotide on the properties of a target sequence is limited, even if this sequence consists of only a few nucleotides. New, accurate and facile strategies for the detection of point mutations are therefore absolutely necessary for the increased adoption of point-of-care molecular diagnostics. Currently, PCR and sequencing are mostly applied for diagnosing SNPs. However these methods have serious drawbacks as routine diagnostic tools because of their labour intensity and cost. Several new, more suitable methods can be applied to enable sensitive detection of mutations based on specially designed hybridization probes, mutation recognizing enzymes and thermal denaturation. Here, an overview is presented of the most recent advances in the field of fast and sensitive SNP detection assays with strong potential for integration in point-of-care tests.
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Affiliation(s)
- Karel Knez
- KU Leuven, BIOSYST-MeBioS, Willem de Croylaan 42, Leuven, Belgium.
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12
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Qing Z, He X, Huang J, Wang K, Zou Z, Qing T, Mao Z, Shi H, He D. Target-Catalyzed Dynamic Assembly-Based Pyrene Excimer Switching for Enzyme-Free Nucleic Acid Amplified Detection. Anal Chem 2014; 86:4934-9. [DOI: 10.1021/ac500834g] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Zhihe Qing
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Xiaoxiao He
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Jin Huang
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Kemin Wang
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Zhen Zou
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Taiping Qing
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Zhengui Mao
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Hui Shi
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
| | - Dinggeng He
- State Key
Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, College
of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering
of Hunan Province, Hunan University, Changsha 410082, People’s Republic of China
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13
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Chen J, Lin J, Zhang X, Cai S, Wu D, Li C, Yang S, Zhang J. Label-free fluorescent biosensor based on the target recycling and Thioflavin T-induced quadruplex formation for short DNA species of c-erbB-2 detection. Anal Chim Acta 2014; 817:42-7. [DOI: 10.1016/j.aca.2014.01.053] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/20/2014] [Accepted: 01/26/2014] [Indexed: 12/14/2022]
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14
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Cheng S, Zheng B, Wang M, Zhao Q, Lam MHW, Ge X. Determination of Adenosine Triphosphate by a Target Inhibited Catalytic Cycle Based on a Strand Displacement Reaction. ANAL LETT 2014. [DOI: 10.1080/00032719.2013.841179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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15
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Shi C, Liu Q, Ma C, Zhong W. Exponential strand-displacement amplification for detection of microRNAs. Anal Chem 2013; 86:336-9. [PMID: 24345199 DOI: 10.1021/ac4038043] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
MicroRNAs (miRNAs) are promising targets for disease diagnosis. However, miRNA detection requires rapid, sensitive, and selective detection to be effective as a diagnostic tool. Herein, a miRNA-initiated exponential strand-displacement amplification (SDA) assay was reported. With the Klenow fragment, nicking enzyme Nt.AlwI, and two primers, the miRNA target can trigger two cycles of nicking, polymerization, and displacement reactions. These reaction cycles amplified the target miRNA exponentially and generated dsDNAs detectable with SYBR Green I in real-time PCR. As low as 16 zmol of the target miRNA was detected by this one-pot assay within 90 min, and the dynamic range spanned over 9 orders of magnitude. Negligible impact from the complex biological matrix was observed on the amplification reaction, indicating the assay's capability to directly detect miRNAs in biofluids.
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Affiliation(s)
- Chao Shi
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao, Shandong 266042, P. R. China
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16
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A target-triggered strand displacement reaction cycle: the design and application in adenosine triphosphate sensing. Anal Biochem 2013; 446:69-75. [PMID: 24161614 DOI: 10.1016/j.ab.2013.10.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 10/06/2013] [Accepted: 10/12/2013] [Indexed: 01/02/2023]
Abstract
A strand displacement reaction (SDR) system that runs solely on oligonucleotides has been developed for the amplification detection of adenosine triphosphate (ATP). It involves a target-induced SDR and an entropy-driven catalytic cycle of two SDRs with five oligonucleotides, denoted as substrate, fuel, catalyst, C-1, and C-2. Catalyst, released from the ATP aptamer-catalyst duplex by ATP molecule, catalyzes the SDRs to finally form the substrate-fuel duplex. All of the intermediates in the catalytic SDR processes have been identified by polyacrylamide gel electrophoresis (PAGE) analysis. The introduction of ATP into the SDR system will induce the ATP aptamer to form G-quadruplex conformation so as to release catalyst and trigger the SDR cycle. When the substrate and C-2 oligonucleotides were labeled with a carboxyfluorescein (FAM) fluorophore and a 4-([4-(dimethylamino)phenyl]azo)benzoic acid (DABCYL) quencher, this SDR catalytic system exhibited a "turn-on" response for ATP. The condition for detecting ATP, such as Mg²⁺ concentration, has been optimized to afford a detection limit of 20 nM. This work provides an enzyme-free biosensing strategy and has potential application in aptamer-based biosensing.
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17
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Zhang H, Li F, Dever B, Li XF, Le XC. DNA-mediated homogeneous binding assays for nucleic acids and proteins. Chem Rev 2012; 113:2812-41. [PMID: 23231477 DOI: 10.1021/cr300340p] [Citation(s) in RCA: 339] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hongquan Zhang
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada T6G 2G3
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18
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Jiao A, Zheng J, Hu Y, Zhu G, Li J, Li H, Yang R, Tan W. Hybridization-triggered isothermal signal amplification coupled with MutS for label-free and sensitive fluorescent assay of SNPs. Chem Commun (Camb) 2012; 48:5659-61. [DOI: 10.1039/c2cc30882g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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Zhou H, Liu J, Xu JJ, Chen HY. Highly Sensitive Electrochemiluminescence Detection of Single-Nucleotide Polymorphisms Based on Isothermal Cycle-Assisted Triple-Stem Probe with Dual-Nanoparticle Label. Anal Chem 2011; 83:8320-8. [DOI: 10.1021/ac2022629] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hong Zhou
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Jing Liu
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Jing-Juan Xu
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hong-Yuan Chen
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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20
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Shi C, Ge Y, Gu H, Ma C. Highly sensitive chemiluminescent point mutation detection by circular strand-displacement amplification reaction. Biosens Bioelectron 2011; 26:4697-701. [DOI: 10.1016/j.bios.2011.05.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 05/14/2011] [Indexed: 11/30/2022]
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21
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Zhao C, Wu L, Ren J, Qu X. A label-free fluorescent turn-on enzymatic amplification assay for DNA detection using ligand-responsive G-quadruplex formation. Chem Commun (Camb) 2011; 47:5461-3. [DOI: 10.1039/c1cc11396h] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A facile and general label-free assay based on enzyme amplification and ligand-responsive quadruplex formation for sensitive and selective DNA detection.
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Affiliation(s)
- Chuanqi Zhao
- Division of Biological Inorganic Chemistry
- State Key Laboratory of Rare Earth Resource Utilization
- Laboratory of Chemical Biology
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Li Wu
- Division of Biological Inorganic Chemistry
- State Key Laboratory of Rare Earth Resource Utilization
- Laboratory of Chemical Biology
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Jinsong Ren
- Division of Biological Inorganic Chemistry
- State Key Laboratory of Rare Earth Resource Utilization
- Laboratory of Chemical Biology
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
| | - Xiaogang Qu
- Division of Biological Inorganic Chemistry
- State Key Laboratory of Rare Earth Resource Utilization
- Laboratory of Chemical Biology
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
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