51
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Ma F, Wei SH, Leng J, Tang B, Zhang CY. A simple “mix-and-detection” method for the sensitive detection of telomerase from cancer cells under absolutely isothermal conditions. Chem Commun (Camb) 2018; 54:2483-2486. [DOI: 10.1039/c8cc00093j] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We develop a simple “mix-and-detection” method for the sensitive detection of telomerase from cancer cells under absolutely isothermal conditions.
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Affiliation(s)
- Fei Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Shu-hua Wei
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Junhong Leng
- Jinan Maternity and Child Care Hospital
- Jinan 250000
- China
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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52
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Sun Y, Sun Y, Tian W, Liu C, Gao K, Li Z. A novel restriction endonuclease GlaI for rapid and highly sensitive detection of DNA methylation coupled with isothermal exponential amplification reaction. Chem Sci 2017; 9:1344-1351. [PMID: 29675182 PMCID: PMC5887237 DOI: 10.1039/c7sc04975g] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/09/2017] [Indexed: 12/22/2022] Open
Abstract
Sensitive and accurate detection of site-specific DNA methylation is of critical significance for early diagnosis of human diseases, especially cancers. Herein, for the first time we employ a novel methylation-dependent restriction endonuclease GlaI to detect site-specific DNA methylation in a highly specific and sensitive way by coupling with isothermal exponential amplification reaction (EXPAR). GlaI can only cut the methylated target site with excellent selectivity but leave the unmethylated DNA intact. Then the newly exposed end fragments of methylated DNA can trigger EXPAR for highly efficient signal amplification while the intact unmethylated DNA will not initiate EXPAR at all. As such, only the methylated DNA is quantitatively and faithfully reflected by the real-time fluorescence signal of the GlaI-EXPAR system, and the potential false positive interference from unmethylated DNA can be effectively eliminated. Therefore, by integrating the unique features of GlaI for highly specific methylation discrimination and EXPAR for rapid and powerful signal amplification, the elegant GlaI-EXPAR assay allows the direct quantification of methylated DNA with ultrahigh sensitivity and accuracy. The detection limit of methylated DNA target has been pushed down to the aM level and the whole detection process of GlaI-EXPAR can be accomplished within a short time of 2 h. More importantly, ultrahigh specificity is achieved and as low as 0.01% methylated DNA can be clearly identified in the presence of a large excess of unmethylated DNA. This GlaI-EXPAR is also demonstrated to be capable of determining site-specific DNA methylations in real genomic DNA samples. Sharing the distinct advantages of ultrahigh sensitivity, outstanding specificity and facile operation, this new GlaI-EXPAR strategy may provide a robust and reliable platform for the detection of site-specific DNA methylations with low abundances.
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Affiliation(s)
- Yueying Sun
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
| | - Yuanyuan Sun
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
| | - Weimin Tian
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
| | - Chenghui Liu
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
| | - Kejian Gao
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
| | - Zhengping Li
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , Shaanxi Province , P. R. China . ;
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53
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Rauf S, Zhang L, Ali A, Ahmad J, Liu Y, Li J. Nanopore-Based, Label-Free, and Real-Time Monitoring Assay for DNA Methyltransferase Activity and Inhibition. Anal Chem 2017; 89:13252-13260. [DOI: 10.1021/acs.analchem.7b03278] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sana Rauf
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Ling Zhang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Asghar Ali
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Jalal Ahmad
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yang Liu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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54
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Zhang Y, Wang XY, Zhang Q, Zhang CY. Label-Free Sensitive Detection of DNA Methyltransferase by Target-Induced Hyperbranched Amplification with Zero Background Signal. Anal Chem 2017; 89:12408-12415. [PMID: 29083155 DOI: 10.1021/acs.analchem.7b03490] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
DNA methyltransferases (MTases) may specifically recognize the short palindromic sequences and transfer a methyl group from S-adenosyl-l-methionine to target cytosine/adenine. The aberrant DNA methylation is linked to the abnormal DNA MTase activity, and some DNA MTases have become promising targets of anticancer/antimicrobial drugs. However, the reported DNA MTase assays often involve laborious operation, expensive instruments, and radio-labeled substrates. Here, we develop a simple and label-free fluorescent method to sensitively detect DNA adenine methyltransferase (Dam) on the basis of terminal deoxynucleotidyl transferase (TdT)-activated Endonuclease IV (Endo IV)-assisted hyperbranched amplification. We design a hairpin probe with a palindromic sequence in the stem as the substrate and a NH2-modified 3' end for the prevention of nonspecific amplification. The substrate may be methylated by Dam and subsequently cleaved by DpnI, producing three single-stranded DNAs, two of which with 3'-OH termini may be amplified by hyperbranched amplification to generate a distinct fluorescence signal. Because high exactitude of TdT enables the amplification only in the presence of free 3'-OH termini and Endo IV only hydrolyzes the intact apurinic/apyrimidinic sites in double-stranded DNAs, zero background signal can be achieved. This method exhibits excellent selectivity and high sensitivity with a limit of detection of 0.003 U/mL for pure Dam and 9.61 × 10-6 mg/mL for Dam in E. coli cells. Moreover, it can be used to screen the Dam inhibitors, holding great potentials in disease diagnosis and drug development.
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Affiliation(s)
- Yan Zhang
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University , Jinan 250014, China
| | - Xin-Yan Wang
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University , Jinan 250014, China
| | - Qianyi Zhang
- Nantou High School Shenzhen , Shenzhen, 518052, China
| | - Chun-Yang Zhang
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University , Jinan 250014, China
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55
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Chen S, Ma H, Li W, Nie Z, Yao S. An entropy-driven signal amplifying strategy for real-time monitoring of DNA methylation process and high-throughput screening of methyltransferase inhibitors. Anal Chim Acta 2017; 970:57-63. [DOI: 10.1016/j.aca.2017.03.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/02/2017] [Accepted: 03/03/2017] [Indexed: 12/31/2022]
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56
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Yang D, He Y, Chen F. Determination of fluvoxamine maleate in human urine and human serum using alkaline KMnO 4 -rhodamine B chemiluminescence. LUMINESCENCE 2017; 32:1077-1083. [PMID: 28371383 DOI: 10.1002/bio.3294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/05/2017] [Accepted: 01/13/2017] [Indexed: 01/16/2023]
Abstract
The flow-injection chemiluminescence (FI-CL) behavior of a gold nanocluster (Au NC)-enhanced rhodamine B-KMnO4 system was studied under alkaline conditions for the first time. In the present study, the as-prepared bovine serum albumin-stabilized Au NCs showed excellent stability and reproducibility. The addition of trace levels of fluvoxamine maleate (Flu) led to an obvious decline in CL intensity in the rhodamine B-KMnO4 -Au NCs system, which could be used for quantitative detection of Flu. Under optimized conditions, the proposed CL system exhibited a favorable analytical performance for Flu determination in the range 2 to 100 μg ml-1 . The detection limit for Flu measurement was 0.021 μg ml-1 . Moreover, this newly developed system revealed outstanding selectivity for Flu detection when compared with a multitude of other species, such as the usual ions, uric acid and a section of hydroxy compounds. Additionally, CL spectra, UV-visible spectroscopes and fluorescence spectra were measured in order to determine the possible reaction mechanism. This approach could be used to detect Flu in human urine and human serum samples with the desired recoveries and could have promising application under physiological conditions.
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Affiliation(s)
- Dongqin Yang
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Yanyan He
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
| | - Funan Chen
- The Key Laboratory of Luminescence and Real-time Analytical Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Southwest University, Chongqing, People's Republic of China
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57
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Li Y, Zou X, Ma F, Tang B, Zhang CY. Development of fluorescent methods for DNA methyltransferase assay. Methods Appl Fluoresc 2017; 5:012002. [DOI: 10.1088/2050-6120/aa6127] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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58
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Song W, Luan Y, Guo X, He P, Zhang X. Sensitive detection of DNA methyltransferase using the dendritic rolling circle amplification-induced fluorescence. Anal Chim Acta 2017; 956:57-62. [DOI: 10.1016/j.aca.2016.12.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/01/2016] [Accepted: 12/05/2016] [Indexed: 11/28/2022]
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59
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Wang LJ, Wang ZY, Zhang Q, Tang B, Zhang CY. Cyclic enzymatic repairing-mediated dual-signal amplification for real-time monitoring of thymine DNA glycosylase. Chem Commun (Camb) 2017; 53:3878-3881. [DOI: 10.1039/c7cc00946a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We develop a new fluorescence method for real-time monitoring of thymine DNA glycosylase activity through cyclic enzymatic repairing-mediated dual-signal amplification.
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Affiliation(s)
- Li-Juan Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Zi-Yue Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | | | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Chun-Yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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60
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Magnetic bead-liposome hybrids enable sensitive and portable detection of DNA methyltransferase activity using personal glucose meter. Biosens Bioelectron 2017; 87:537-544. [DOI: 10.1016/j.bios.2016.08.103] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/20/2016] [Accepted: 08/29/2016] [Indexed: 11/18/2022]
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61
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Jiang B, Wei Y, Xu J, Yuan R, Xiang Y. Coupling hybridization chain reaction with DNAzyme recycling for enzyme-free and dual amplified sensitive fluorescent detection of methyltransferase activity. Anal Chim Acta 2017; 949:83-88. [DOI: 10.1016/j.aca.2016.11.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/27/2016] [Accepted: 11/05/2016] [Indexed: 12/20/2022]
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62
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Huang J, Li XY, Du YC, Zhang LN, Liu KK, Zhu LN, Kong DM. Sensitive fluorescent detection of DNA methyltransferase using nicking endonuclease-mediated multiple primers-like rolling circle amplification. Biosens Bioelectron 2016; 91:417-423. [PMID: 28063390 DOI: 10.1016/j.bios.2016.12.061] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/13/2016] [Accepted: 12/29/2016] [Indexed: 11/19/2022]
Abstract
Sensitive and reliable detection of DNA methyltransferase (MTase) is of great significance for both early tumor diagnosis and therapy. In this study, a simple, label-free and sensitive DNA MTase-sensing method was developed on the basis of a nicking endonuclease-mediated multiple primers-like rolling circle amplification (RCA) strategy. In this method, a dumbbell RCA template was prepared by blunt-end ligation of two molecules of hairpin DNA. In addition to the primer-binding sequence, the dumbbell template contained another three important parts: 5'-CCGG-3' sequences in double-stranded stems, nicking endonuclease recognition sites and C-rich sequences in single-stranded loops. The introduction of 5'-CCGG-3' sequences allows the dumbbell template to be destroyed by the restriction endonuclease, HpaII, but is not destroyed in the presence of the target MTase-M.SssI MTase. The introduction of nicking endonuclease recognition sites makes the M.SssI MTase-protected dumbbell template-mediated RCA proceed in a multiple primers-like exponential mode, thus providing the RCA with high amplification efficiency. The introduction of C-rich sequences may promote the folding of amplification products into a G-quadruplex structure, which is specifically recognized by the commercially available fluorescent probe thioflavin T. Improved RCA amplification efficiency and specific fluorescent recognition of RCA products provide the M.SssI MTase-sensing platform with high sensitivity. When a dumbbell template containing four nicking endonuclease sites is used, highly specific M.SssI MTase activity detection can be achieved in the range of 0.008-50U/mL with a detection limit as low as 0.0011U/mL. Simple experimental operation and mix-and-detection fluorescent sensing mode ensures that M.SssI MTase quantitation works well in a real-time RCA mode, thus further simplifying the sensing performance and making high throughput detection possible. The proposed MTase-sensing strategy was also demonstrated to be applicable for screening and evaluating the inhibitory activity of MTase inhibitors.
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Affiliation(s)
- Juan Huang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, PR China
| | - Xiao-Yu Li
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, PR China
| | - Yi-Chen Du
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, PR China
| | - Li-Na Zhang
- Department of Chemistry, Tianjin University, Tianjin 300072, PR China
| | - Ke-Ke Liu
- Department of Chemistry, Tianjin University, Tianjin 300072, PR China
| | - Li-Na Zhu
- Department of Chemistry, Tianjin University, Tianjin 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, PR China.
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin 300071, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, PR China.
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63
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Zhang H, Yang Y, Dong H, Cai C. A superstructure-based electrochemical assay for signal-amplified detection of DNA methyltransferase activity. Biosens Bioelectron 2016; 86:927-932. [DOI: 10.1016/j.bios.2016.07.103] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/11/2016] [Accepted: 07/28/2016] [Indexed: 12/12/2022]
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64
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Recent Advance in Chemiluminescence Assay and Its Biochemical Applications. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1016/s1872-2040(16)60981-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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65
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Shu Q, Wang L, Ouyang H, Wang W, Liu F, Fu Z. Multiplexed immunochromatographic test strip for time-resolved chemiluminescent detection of pesticide residues using a bifunctional antibody. Biosens Bioelectron 2016; 87:908-914. [PMID: 27664410 DOI: 10.1016/j.bios.2016.09.057] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/07/2016] [Accepted: 09/16/2016] [Indexed: 12/28/2022]
Abstract
A novel bifunctional antibody (BfAb) that could recognize methyl parathion and imidacloprid simultaneously was prepared by a hybrid hybridomas technique. Using the BfAb as the sole recognition reagent, a multiplexed immunochromatographic test strip based on a time-resolved chemiluminescence (CL) strategy was developed for quantitative detection of pesticide residues. Horseradish peroxidase (HRP) and alkaline phosphatase (ALP) were used as the CL probes to label the haptens of methyl parathion and imidacloprid, respectively. After the labeled haptens competed with methyl parathion and imidacloprid to bind with the BfAb immobilized on the test strip, the two CL reactions catalyzed by the enzymes were triggered simultaneously by coreactants injection. Due to the distinct CL kinetics characteristics of HRP and ALP, the signals for methyl parathion and imidacloprid detections were collected at 2.5s and 300s, respectively. The linear ranges for methyl parathion and imidacloprid were both 0.1-250ngmL-1, with detection limits of 0.058ngmL-1 (S/N=3). The whole assay process could be accomplished within 22min. The detection results for spiked traditional Chinese medicine samples demonstrated its application potential. The proposed method provided a low-cost, facile and rapid tool for multiplexed screening of pesticide residues using single antibody.
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Affiliation(s)
- Qi Shu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Limin Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Hui Ouyang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Wenwen Wang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Fengquan Liu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing 210014, China.
| | - Zhifeng Fu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China.
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66
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Li W, Jiang W, Wang L. Self-locked aptamer probe mediated cascade amplification strategy for highly sensitive and selective detection of protein and small molecule. Anal Chim Acta 2016; 940:1-7. [PMID: 27662754 DOI: 10.1016/j.aca.2016.08.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/28/2016] [Accepted: 08/09/2016] [Indexed: 10/21/2022]
Abstract
In this work, a novel self-locked aptamer probe mediated cascade amplification strategy has been constructed for highly sensitive and specific detection of protein. First, the self-locked aptamer probe was designed with three functions: one was specific molecular recognition attributed to the aptamer sequence, the second was signal transduction owing to the transduction sequence, and the third was self-locking through the hybridization of the transduction sequence and part of the aptamer sequence. Then, the aptamer sequence specific recognized the target and folded into a three-way helix junction, leading to the release of the transduction sequence. Next, the 3'-end of this three-way junction acted as primer to trigger the strand displacement amplification (SDA), yielding a large amount of primers. Finally, the primers initiated the dual-exponential rolling circle amplification (DE-RCA) and generated numerous G-quadruples sequences. By inserting the fluorescent dye N-methyl mesoporphyrin IX (NMM), enhanced fluorescence signal was achieved. In this strategy, the self-locked aptamer probe was more stable to reduce the interference signals generated by the uncontrollable folding in unbounded state. Through the cascade amplification of SDA and DE-RCA, the sensitivity was further improved with a detection limit of 3.8 × 10(-16) mol/L for protein detection. Furthermore, by changing the aptamer sequence of the probe, sensitive and selective detection of adenosine has been also achieved, suggesting that the proposed strategy has good versatility and can be widely used in sensitive and selective detection of biomolecules.
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Affiliation(s)
- Wei Li
- Key Laboratory of Natural Products Chemical Biology, Ministry of Education, School of Pharmacy, Shandong University, Jinan, 250012, PR China
| | - Wei Jiang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China
| | - Lei Wang
- Key Laboratory of Natural Products Chemical Biology, Ministry of Education, School of Pharmacy, Shandong University, Jinan, 250012, PR China.
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67
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Li Y, Yu C, Han H, Zhao C, Zhang X. Sensitive SERS detection of DNA methyltransferase by target triggering primer generation-based multiple signal amplification strategy. Biosens Bioelectron 2016; 81:111-116. [DOI: 10.1016/j.bios.2016.02.057] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 12/25/2022]
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68
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Iglesias González T, Blanco-González E, Montes-Bayón M. New strategy to address DNA-methyl transferase activity in ovarian cancer cell cultures by monitoring the formation of 5-methylcytosine using HPLC-UV. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1028:16-24. [PMID: 27318640 DOI: 10.1016/j.jchromb.2016.05.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/09/2016] [Accepted: 05/25/2016] [Indexed: 12/31/2022]
Abstract
Methylation of mammalian genomic DNA is catalyzed by DNA methyltransferases (DNMTs). Aberrant expression and activity of these enzymes has been reported to play an important role in the initiation and progression of tumors and its response to chemotherapy. Therefore, there is a great interest in developing strategies to detect human DNMTs activity. We propose a simple, antibody-free, label-free and non-radioactive analytical strategy in which methyltransferase activity is measured trough the determination of the 5-methylcytosine (5mC) content in DNA by a chromatographic method (HPLC-UV) previously developed. For this aim, a correlation between the enzyme activity and the concentration of 5mC obtained by HPLC-UV is previously obtained under optimized conditions using both, un-methylated and hemi-methylated DNA substrates and the prokaryotic methyltransferase M.SssI as model enzyme. The evaluation of the methylation yield in un-methylated known sequences (a 623bp PCR-amplicon) turned to be quantitative (110%) in experiments conducted in-vitro. Methylation of hemi-methylated and low-methylated sequences could be also detected with the proposed approach. The application of the methodology to the determination of the DNMTs activity in nuclear extracts from human ovarian cancer cells has revealed the presence of matrix effects (also confirmed by standard additions) that hampered quantitative enzyme recovery. The obtained results showed the high importance of adequate sample clean-up steps.
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Affiliation(s)
- T Iglesias González
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, C/Julian Clavería 8, 33006 Oviedo, Spain
| | - E Blanco-González
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, C/Julian Clavería 8, 33006 Oviedo, Spain.
| | - M Montes-Bayón
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, C/Julian Clavería 8, 33006 Oviedo, Spain.
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69
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DNA–gold nanoparticles network based electrochemical biosensors for DNA MTase activity. Talanta 2016; 152:228-35. [DOI: 10.1016/j.talanta.2016.01.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 01/08/2016] [Accepted: 01/12/2016] [Indexed: 11/23/2022]
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70
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Kong XJ, Wu S, Cen Y, Yu RQ, Chu X. “Light-up” Sensing of human 8-oxoguanine DNA glycosylase activity by target-induced autocatalytic DNAzyme-generated rolling circle amplification. Biosens Bioelectron 2016; 79:679-84. [DOI: 10.1016/j.bios.2015.12.106] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/26/2015] [Accepted: 12/29/2015] [Indexed: 12/11/2022]
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71
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Qi Y, Xiu FR, Zheng M, Li B. A simple and rapid chemiluminescence aptasensor for acetamiprid in contaminated samples: Sensitivity, selectivity and mechanism. Biosens Bioelectron 2016; 83:243-9. [PMID: 27131997 DOI: 10.1016/j.bios.2016.04.074] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/17/2016] [Accepted: 04/22/2016] [Indexed: 10/21/2022]
Abstract
Ultralow concentration and selective detection of pesticide residue is important to evaluate the environmental and biological pollution and the threat to human health which single component pesticide can bring. Herein, we report an amplified chemiluminescence (CL) sensing platform for ultrasensitive and selective acetamiprid (widely used pesticide) detection. It is based on aptamer's high binding affinity to target and the relevance between AuNPs' morphology and its catalytic effect to stimulate the generation of CL in the presence of H2O2 and luminol. Moreover, AuNPs morphological slight change induced by aptamers' conformation during targets binding could lead to the significant change of catalytic properties. Therefore, the proposed sensing platform for pesticide residue exhibited a high sensitivity toward acetamiprid with a detection limit of 62pM, which was about 100-fold lower than that of other aptamer-based sensor for acetamiprid detection. Because of the intrinsic specificity of aptamer's recognization, this sensing platform has high selectivity. So, this sensing platform provides a label-free and cost-effective approach for sensitive and selective detection of single component pesticide residue. More importantly, this CL method was successfully used to determine acetamiprid in real contaminated samples.
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Affiliation(s)
- Yingying Qi
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350108, PR China.
| | - Fu-Rong Xiu
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350108, PR China
| | - Minfeng Zheng
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350108, PR China
| | - Baoxin Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
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72
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Sensitive detection of DNA methyltransferase activity based on supercharged fluorescent protein and template-free DNA polymerization. Sci China Chem 2016. [DOI: 10.1007/s11426-016-5564-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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73
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Cui W, Wang L, Jiang W. A dual amplification fluorescent strategy for sensitive detection of DNA methyltransferase activity based on strand displacement amplification and DNAzyme amplification. Biosens Bioelectron 2016; 77:650-5. [DOI: 10.1016/j.bios.2015.10.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/29/2015] [Accepted: 10/12/2015] [Indexed: 10/22/2022]
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74
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Zhou H, Han T, Wei Q, Zhang S. Efficient Enhancement of Electrochemiluminescence from Cadmium Sulfide Quantum Dots by Glucose Oxidase Mimicking Gold Nanoparticles for Highly Sensitive Assay of Methyltransferase Activity. Anal Chem 2016; 88:2976-83. [PMID: 26857780 DOI: 10.1021/acs.analchem.6b00450] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, an original electrochemiluminescence (ECL) method for the detection of DNA methyltransferase (MTase) activity is presented based on the efficient enhanced ECL of CdS quantum dots (QDs) through catalytic generation of coreactant and energy transfer by glucose oxidase mimicking gold nanoparticles (Au NPs). Briefly, a double-stranded DNA (ds-DNA) containing the symmetric sequence of 5'-CCGG-3' was bonded to the CdS QDs modified glassy carbon electrode (GCE). After that, the electrode was incubated with M.SssI CpG MTase which catalyzed the methylation of the specific CpG dinucleotides. Subsequently, the electrode was treated with a restriction endonuclease HpaII which could recognize and cut off the 5'-CCGG-3' sequence. Once the CpG site in the 5'-CCGG-3' was methylated, the recognition function of HpaII was blocked, and it could not cut off the ds-DNA. Later, Au NPs were combined with the end of the ds-DNA section which was not cut off and has -SH groups. Therefore, the higher M.SssI MTase activity could lead to more Au NPs immobilized on ds-DNA. Au NPs could not only catalyze the oxidation of glucose with cosubstrate oxygen, producing gluconate and hydrogen peroxide (H2O2) which served as the ECL coreactant of CdS QDs, but also enhanced CdS QDs ECL via energy transfer (ET). Thus, the methylation event corresponding to the MTase activity could be monitored and amplified by this method. Finally, a logarithmic linear correlation between the ECL intensity of CdS QDs and the activity of M.SssI MTase that ranged from 1.0 to 120 U mL(-1) with the detection limit of 0.05 U mL(-1) was obtained.
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Affiliation(s)
- Hong Zhou
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University , Linyi 276005, People's Republic of China
| | - Tongqian Han
- Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, People's Republic of China
| | - Qin Wei
- Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, People's Republic of China
| | - Shusheng Zhang
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers, School of Chemistry and Chemical Engineering, Linyi University , Linyi 276005, People's Republic of China
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75
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Xiao L, Zhou Z, Feng M, Tong A, Xiang Y. Cationic Peptide Conjugation Enhances the Activity of Peroxidase-Mimicking DNAzymes. Bioconjug Chem 2016; 27:621-7. [DOI: 10.1021/acs.bioconjchem.5b00608] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lu Xiao
- Department
of Chemistry, Beijing Key Laboratory for Microanalytical Methods and
Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Zhaojuan Zhou
- Beijing Third Class Tobacco Supervision Station, Beijing 101121, China
| | - Mengli Feng
- Department
of Chemistry, Beijing Key Laboratory for Microanalytical Methods and
Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Aijun Tong
- Department
of Chemistry, Beijing Key Laboratory for Microanalytical Methods and
Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Yu Xiang
- Department
of Chemistry, Beijing Key Laboratory for Microanalytical Methods and
Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry
and Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
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76
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Poh WJ, Wee CPP, Gao Z. DNA Methyltransferase Activity Assays: Advances and Challenges. Am J Cancer Res 2016; 6:369-91. [PMID: 26909112 PMCID: PMC4737724 DOI: 10.7150/thno.13438] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/12/2015] [Indexed: 12/28/2022] Open
Abstract
DNA methyltransferases (MTases), a family of enzymes that catalyse the methylation of DNA, have a profound effect on gene regulation. A large body of evidence has indicated that DNA MTase is potentially a predictive biomarker closely associated with genetic disorders and genetic diseases like cancer. Given the attention bestowed onto DNA MTases in molecular biology and medicine, highly sensitive detection of DNA MTase activity is essential in determining gene regulation, epigenetic modification, clinical diagnosis and therapeutics. Conventional techniques such as isotope labelling are effective, but they often require laborious sample preparation, isotope labelling, sophisticated equipment and large amounts of DNA, rendering them unsuitable for uses at point-of-care. Simple, portable, highly sensitive and low-cost assays are urgently needed for DNA MTase activity screening. In most recent technological advances, many alternative DNA MTase activity assays such as fluorescent, electrochemical, colorimetric and chemiluminescent assays have been proposed. In addition, many of them are coupled with nanomaterials and/or enzymes to significantly enhance their sensitivity. Herein we review the progress in the development of DNA MTase activity assays with an emphasis on assay mechanism and performance with some discussion on challenges and perspectives. It is hoped that this article will provide a broad coverage of DNA MTase activity assays and their latest developments and open new perspectives toward the development of DNA MTase activity assays with much improved performance for uses in molecular biology and clinical practice.
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77
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Zhang W, Zu X, Song Y, Zhu Z, Yang CJ. Detection of DNA methyltransferase activity using allosteric molecular beacons. Analyst 2016; 141:579-84. [DOI: 10.1039/c5an01763g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abnormal DNA methylation patterns caused by altered DNA methyltransferase (MTase) activity are closely associated with cancer. Herein, using DNA adenine methylation methyltransferase (Dam MTase) as a model analyte, we designed an allosteric molecular beacon (aMB) for sensitive detection of Dam MTase activity.
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Affiliation(s)
- Weiting Zhang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Collaborative Innovation Center of Chemistry for Energy Materials
- Key Laboratory for Chemical Biology of Fujian Province
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
| | - Xiaolong Zu
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Collaborative Innovation Center of Chemistry for Energy Materials
- Key Laboratory for Chemical Biology of Fujian Province
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
| | - Yanling Song
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Collaborative Innovation Center of Chemistry for Energy Materials
- Key Laboratory for Chemical Biology of Fujian Province
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
| | - Zhi Zhu
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Collaborative Innovation Center of Chemistry for Energy Materials
- Key Laboratory for Chemical Biology of Fujian Province
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
| | - Chaoyong James Yang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation
- Collaborative Innovation Center of Chemistry for Energy Materials
- Key Laboratory for Chemical Biology of Fujian Province
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
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78
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Zhao H, Yin H, Yang Y. Label-free electrochemical detection of DNA methyltransferase activity via a DNA tetrahedron-structured probe. RSC Adv 2016. [DOI: 10.1039/c6ra01845a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Label-free electrochemical detection of DNA methyltransferase activityviaDNA tetrahedron-structured probe.
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Affiliation(s)
- Hongyu Zhao
- The Second Hospital of Nanjing
- Affiliated to Medical School of Southeast University
- Nanjing
- China
| | - Hai Yin
- Chinese People's Liberation Army 454 Hospital
- Nanjing
- China
| | - Yongfeng Yang
- The Second Hospital of Nanjing
- Affiliated to Medical School of Southeast University
- Nanjing
- China
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79
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Zhao H, Wang L, Jiang W. Target-protected dumbbell molecular probe mediated cascade rolling circle amplification strategy for the sensitive assay of DNA methyltransferase activity. Chem Commun (Camb) 2016; 52:2517-20. [DOI: 10.1039/c5cc09147k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel fluorescence detection system is developed for DNA methyltransferase activity assay based on target-protected dumbbell molecular probe mediated cascade rolling circle amplification strategy.
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Affiliation(s)
- Haiyan Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
| | - Lei Wang
- School of Pharmaceutical Sciences
- Shandong University
- 250012 Jinan
- P. R. China
| | - Wei Jiang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
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80
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Liu Z, Lei C, Deng H, Lu G, Huang Y, Yao S. Sensitive and versatile fluorescent enzymatic assay of nucleases and DNA methyltransferase based on a supercharged fluorescent protein. RSC Adv 2016. [DOI: 10.1039/c6ra02711c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The ScGFP-based platform takes advantage of the DNA length-dependent binding affinity between ScGFP and DNA for multiple DNA enzyme detection including nucleases and DNA MTase.
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Affiliation(s)
- Zhuoliang Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Chunyang Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Honghua Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Guoyan Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Yan Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Shouzhuo Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
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81
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Nucleic acid tool enzymes-aided signal amplification strategy for biochemical analysis: status and challenges. Anal Bioanal Chem 2015; 408:2793-811. [DOI: 10.1007/s00216-015-9240-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/13/2015] [Accepted: 12/01/2015] [Indexed: 11/27/2022]
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82
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Siraj N, El-Zahab B, Hamdan S, Karam TE, Haber LH, Li M, Fakayode SO, Das S, Valle B, Strongin RM, Patonay G, Sintim HO, Baker GA, Powe A, Lowry M, Karolin JO, Geddes CD, Warner IM. Fluorescence, Phosphorescence, and Chemiluminescence. Anal Chem 2015; 88:170-202. [PMID: 26575092 DOI: 10.1021/acs.analchem.5b04109] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Noureen Siraj
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Bilal El-Zahab
- Department of Mechanical and Materials Engineering, Florida International University , Miami, Florida 33174, United States
| | - Suzana Hamdan
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Tony E Karam
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Louis H Haber
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Min Li
- Process Development Center, Albemarle Corporation , Baton Rouge, Louisiana 70805, United States
| | - Sayo O Fakayode
- Department of Chemistry, Winston-Salem State University , Winston-Salem, North Carolina 27110, United States
| | - Susmita Das
- Department of Civil Engineering, Adamas Institute of Technology , Barasat, Kolkata 700126, West Bengal India
| | - Bertha Valle
- Department of Chemistry, Texas Southern University , Houston, Texas 77004, United States
| | - Robert M Strongin
- Department of Chemistry, Portland State University , Portland, Oregon 97207, United States
| | - Gabor Patonay
- Department of Chemistry, Georgia State University , Atlanta, Georgia 30302-4098, United States
| | - Herman O Sintim
- Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States
| | - Gary A Baker
- Department of Chemistry, University of Missouri Columbia , Columbia, Missouri 65211-7600, United States
| | - Aleeta Powe
- Department of Chemistry, University of Louisville , Louisville, Kentucky 40208, United States
| | - Mark Lowry
- Department of Chemistry, Portland State University , Portland, Oregon 97207, United States
| | - Jan O Karolin
- Institute of Fluorescence, University of Maryland Baltimore County , Baltimore, Maryland 21202, United States
| | - Chris D Geddes
- Institute of Fluorescence, University of Maryland Baltimore County , Baltimore, Maryland 21202, United States
| | - Isiah M Warner
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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83
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Xu M, Gao Z, Wei Q, Chen G, Tang D. Hemin/G-quadruplex-based DNAzyme concatamers for in situ amplified impedimetric sensing of copper(II) ion coupling with DNAzyme-catalyzed precipitation strategy. Biosens Bioelectron 2015; 74:1-7. [DOI: 10.1016/j.bios.2015.05.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/11/2015] [Accepted: 05/26/2015] [Indexed: 12/29/2022]
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84
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Xu LP, Chen Y, Yang G, Shi W, Dai B, Li G, Cao Y, Wen Y, Zhang X, Wang S. Ultratrace DNA Detection Based on the Condensing-Enrichment Effect of Superwettable Microchips. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:6878-6884. [PMID: 26426114 DOI: 10.1002/adma.201502982] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 08/10/2015] [Indexed: 06/05/2023]
Abstract
A sensitive nucleic acid detection platform based on superhydrophilic microwells spotted on a superhydrophobic substrate is fabricated. Due to the wettability differences, ultratrace DNA molecules are enriched and the fluorescent signals are amplified to allow more sensitive detection. The biosensing interface based on superwettable materials provides a simple and cost-effective way for ultratrace DNA sensing.
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Affiliation(s)
- Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Yanxia Chen
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Gao Yang
- Laboratory of Bioinspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Wanxin Shi
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Bing Dai
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Guannan Li
- Laboratory of Bioinspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yanhua Cao
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Yongqiang Wen
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing, 100083, P. R. China
| | - Shutao Wang
- Laboratory of Bioinspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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85
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Abstract
Isothermal amplification of nucleic acids is a simple process that rapidly and efficiently accumulates nucleic acid sequences at constant temperature. Since the early 1990s, various isothermal amplification techniques have been developed as alternatives to polymerase chain reaction (PCR). These isothermal amplification methods have been used for biosensing targets such as DNA, RNA, cells, proteins, small molecules, and ions. The applications of these techniques for in situ or intracellular bioimaging and sequencing have been amply demonstrated. Amplicons produced by isothermal amplification methods have also been utilized to construct versatile nucleic acid nanomaterials for promising applications in biomedicine, bioimaging, and biosensing. The integration of isothermal amplification into microsystems or portable devices improves nucleic acid-based on-site assays and confers high sensitivity. Single-cell and single-molecule analyses have also been implemented based on integrated microfluidic systems. In this review, we provide a comprehensive overview of the isothermal amplification of nucleic acids encompassing work published in the past two decades. First, different isothermal amplification techniques are classified into three types based on reaction kinetics. Then, we summarize the applications of isothermal amplification in bioanalysis, diagnostics, nanotechnology, materials science, and device integration. Finally, several challenges and perspectives in the field are discussed.
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Affiliation(s)
- Yongxi Zhao
- Key Laboratory of Biomedical Information Engineering of Education Ministry, School of Life Science and Technology, Xi'an Jiaotong University , Xianning West Road, Xi'an, Shaanxi 710049, China
| | - Feng Chen
- Key Laboratory of Biomedical Information Engineering of Education Ministry, School of Life Science and Technology, Xi'an Jiaotong University , Xianning West Road, Xi'an, Shaanxi 710049, China
| | - Qian Li
- Division of Physical Biology, and Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboraotory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, China
| | - Lihua Wang
- Division of Physical Biology, and Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboraotory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, China
| | - Chunhai Fan
- Division of Physical Biology, and Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboraotory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, China.,School of Life Science & Technology, ShanghaiTech University , Shanghai 200031, China
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86
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Gong L, Zhao Z, Lv YF, Huan SY, Fu T, Zhang XB, Shen GL, Yu RQ. DNAzyme-based biosensors and nanodevices. Chem Commun (Camb) 2015; 51:979-95. [PMID: 25336076 DOI: 10.1039/c4cc06855f] [Citation(s) in RCA: 205] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
DNAzymes, screened through in vitro selection, have shown great promise as molecular tools in the design of biosensors and nanodevices. The catalytic activities of DNAzymes depend specifically on cofactors and show multiple enzymatic turnover properties, which make DNAzymes both versatile recognition elements and outstanding signal amplifiers. Combining nanomaterials with unique optical, magnetic and electronic properties, DNAzymes may yield novel fluorescent, colorimetric, surface-enhanced Raman scattering (SERS), electrochemical and chemiluminescent biosensors. Moreover, some DNAzymes have been utilized as functional components to perform arithmetic operations or as "walkers" to move along DNA tracks. DNAzymes can also function as promising therapeutics, when designed to complement target mRNAs or viral RNAs, and consequently lead to down-regulation of protein expression. This feature article focuses on the most significant achievements in using DNAzymes as recognition elements and signal amplifiers for biosensors, and highlights the applications of DNAzymes in logic gates, DNA walkers and nanotherapeutics.
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Affiliation(s)
- Liang Gong
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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87
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Wang X, Cui M, Zhou H, Zhang S. DNA-hybrid-gated functional mesoporous silica for sensitive DNA methyltransferase SERS detection. Chem Commun (Camb) 2015; 51:13983-5. [PMID: 26245236 DOI: 10.1039/c5cc05463j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mesoporous silica nanoparticles (MSNs) were used as a nano-carrier/amplifier to develop a novel MSN-SERS probe for DNA MTase detection. High sensitivity, good selectivity, and rapid analysis are achieved.
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Affiliation(s)
- Xiaomeng Wang
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, P. R. China.
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88
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89
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Tang F, Xing XW, Chu JM, Yuan Q, Zhou X, Feng YQ, Yuan BF. A highly sensitive fluorescence assay for methyltransferase activity by exonuclease-aided signal amplification. Analyst 2015; 140:4636-41. [DOI: 10.1039/c5an00732a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly sensitive fluorescence assay for DNA adenine methyltransferase activity was developed using exonuclease-aided signal amplification.
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Affiliation(s)
- Feng Tang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xi-Wen Xing
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Jie-Mei Chu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Quan Yuan
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xiang Zhou
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Bi-Feng Yuan
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- Department of Chemistry
- Wuhan University
- Wuhan 430072
- P. R. China
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90
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Xue Q, Zhang Y, Xu S, Li H, Wang L, Li R, Zhang Y, Yue Q, Gu X, Zhang S, Liu J, Wang H. Magnetic nanoparticles-cooperated fluorescence sensor for sensitive and accurate detection of DNA methyltransferase activity coupled with exonuclease III-assisted target recycling. Analyst 2015; 140:7637-44. [DOI: 10.1039/c5an01546d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A magnetic nanoparticles-cooperated fluorescence sensor for DNA methyltransferase activity was developed by coupling with exonuclease III-assisted target recycling.
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91
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Luo X, Li Y, Zheng J, Qi H, Liang Z, Ning X. The determination of DNA methyltransferase activity by quenching of tris(2,2′-bipyridine)ruthenium electrogenerated chemiluminescence with ferrocene. Chem Commun (Camb) 2015; 51:9487-90. [DOI: 10.1039/c5cc02817e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrogenerated chemiluminescence biosensing method for the determination of DNA methyltransferase activity is developed by the quenching of tris(2,2′-bipyridine)ruthenium ECL by ferrocene.
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Affiliation(s)
- Xiaoe Luo
- Key Laboratory of Electroanalytical Chemistry
- Institute of Analytical Science
- Northwest University
- Xi'an
- P. R. China
| | - Yan Li
- Key Laboratory of Electroanalytical Chemistry
- Institute of Analytical Science
- Northwest University
- Xi'an
- P. R. China
| | - Jianbin Zheng
- Key Laboratory of Electroanalytical Chemistry
- Institute of Analytical Science
- Northwest University
- Xi'an
- P. R. China
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an
- P. R. China
| | - Zhenxing Liang
- Key Laboratory on Fuel Cell Technology of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- P. R. China
| | - Xiaohui Ning
- Key Laboratory of Electroanalytical Chemistry
- Institute of Analytical Science
- Northwest University
- Xi'an
- P. R. China
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92
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Zeng S, Huang H, Huang Y, Liu X, Qin J, Zhao S, Chen ZF, Liang H. Label-free and amplified colorimetric assay of ribonuclease H activity and inhibition based on a novel enzyme-responsive DNAzyme cascade. RSC Adv 2015. [DOI: 10.1039/c5ra05712d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A simple, label-free and amplified colorimetric assay strategy based on a novel enzyme-responsive DNAzyme cascade is developed for assay of ribonuclease H activity and inhibition. This assay exhibits high sensitivity and selectivity.
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Affiliation(s)
- Shulan Zeng
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
| | - Huakui Huang
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
- College of Chemistry and Pharmacy
| | - Yong Huang
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
- College of Chemistry and Pharmacy
| | - Xiaoqian Liu
- College of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Jian Qin
- College of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Shulin Zhao
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
- College of Chemistry and Pharmacy
| | - Zhen-Feng Chen
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
| | - Hong Liang
- Ministry of Education Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Guangxi Normal University
- Guilin
- China
- College of Chemistry and Pharmacy
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93
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Deng H, Gao Z. Bioanalytical applications of isothermal nucleic acid amplification techniques. Anal Chim Acta 2015; 853:30-45. [DOI: 10.1016/j.aca.2014.09.037] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 09/16/2014] [Accepted: 09/21/2014] [Indexed: 12/31/2022]
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94
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Xue Q, Wang L, Jiang W. Label-free molecular beacon-based quadratic isothermal exponential amplification: a simple and sensitive one-pot method to detect DNA methyltransferase activity. Chem Commun (Camb) 2015. [DOI: 10.1039/c5cc05410a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An illustration of the label-free molecular beacon-mediated quadratic isothermal exponential amplification strategy (LFMB-QIEA) for target Dam MTase detection.
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Affiliation(s)
- Qingwang Xue
- School of Pharmacy
- Shandong University
- Jinan 250012
- P. R. China
- Department of Chemistry
| | - Lei Wang
- School of Pharmacy
- Shandong University
- Jinan 250012
- P. R. China
| | - Wei Jiang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P. R. China
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95
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Zhu X, Feng C, Zhang B, Tong H, Gao T, Li G. A netlike rolling circle nucleic acid amplification technique. Analyst 2015; 140:74-8. [DOI: 10.1039/c4an01711k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An isothermal nucleic acid amplification technique termed as netlike rolling circle amplification is proposed. Dense and uniform network morphology of amplified products is first observed, suggesting the ultrahigh amplification efficiency.
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Affiliation(s)
- Xiaoli Zhu
- Laboratory of Biosensing Technology
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P R China
| | - Chang Feng
- Laboratory of Biosensing Technology
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P R China
| | - Bin Zhang
- Laboratory of Biosensing Technology
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P R China
| | - Hui Tong
- Laboratory of Biosensing Technology
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P R China
| | - Tao Gao
- State Key Laboratory of Pharmaceutical Biotechnology
- Department of Biochemistry
- Nanjing University
- Nanjing 210093
- P R China
| | - Genxi Li
- Laboratory of Biosensing Technology
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P R China
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96
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Zhang Y, Xu WJ, Zeng YP, Zhang CY. Sensitive detection of DNA methyltransferase activity by transcription-mediated duplex-specific nuclease-assisted cyclic signal amplification. Chem Commun (Camb) 2015; 51:13968-71. [DOI: 10.1039/c5cc05922d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We develop transcription-mediated duplex-specific nuclease-assisted cyclic signal amplification for sensitive detection of DNA methyltransferase activity.
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Affiliation(s)
- Yan Zhang
- Single-Molecule Detection and Imaging Laboratory
- Key Lab of Health Informatics of Chinese Academy of Sciences
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Wen-jing Xu
- Single-Molecule Detection and Imaging Laboratory
- Key Lab of Health Informatics of Chinese Academy of Sciences
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Ya-ping Zeng
- Single-Molecule Detection and Imaging Laboratory
- Key Lab of Health Informatics of Chinese Academy of Sciences
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
| | - Chun-yang Zhang
- Single-Molecule Detection and Imaging Laboratory
- Key Lab of Health Informatics of Chinese Academy of Sciences
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen 518055
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97
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Li X, Song T, Guo X. DNA methylation detection with end-to-end nanorod assembly-enhanced surface plasmon resonance. Analyst 2015; 140:6230-3. [DOI: 10.1039/c5an01015b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Au nanorod (AuNR) assembly-enhanced SPR system coupling with polymerization and nicking reactions was developed for amplified detection of DNA methylation and Dam MTase activity assay.
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Affiliation(s)
- Xuemei Li
- School of Chemistry and Chemical Engineering
- Linyi University
- Linyi 276005
- P. R. China
| | - Ting Song
- Center of Cooperative Innovation for Chemical Imaging Functional Probes in Universities of Shandong
- College of Chemistry
- Shandong Normal University
- Jinan 250014
- P.R. China
| | - Xilin Guo
- Center of Cooperative Innovation for Chemical Imaging Functional Probes in Universities of Shandong
- College of Chemistry
- Shandong Normal University
- Jinan 250014
- P.R. China
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98
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Su C, Liu Y, Ye T, Xiang X, Ji X, He Z. Rolling cycle amplification based single-color quantum dots–ruthenium complex assembling dyads for homogeneous and highly selective detection of DNA. Anal Chim Acta 2015; 853:495-500. [DOI: 10.1016/j.aca.2014.10.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/11/2014] [Accepted: 10/15/2014] [Indexed: 12/11/2022]
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99
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Xue Q, Lv Y, Xu S, Zhang Y, Wang L, Li R, Yue Q, Li H, Gu X, Zhang S, Liu J. Highly sensitive fluorescence assay of DNA methyltransferase activity by methylation-sensitive cleavage-based primer generation exponential isothermal amplification-induced G-quadruplex formation. Biosens Bioelectron 2014; 66:547-53. [PMID: 25506903 DOI: 10.1016/j.bios.2014.12.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/04/2014] [Accepted: 12/05/2014] [Indexed: 12/31/2022]
Abstract
Site-specific identification of DNA methylation and assay of MTase activity are imperative for determining specific cancer types, provide insights into the mechanism of gene repression, and develop novel drugs to treat methylation-related diseases. Herein, we developed a highly sensitive fluorescence assay of DNA methyltransferase by methylation-sensitive cleavage-based primer generation exponential isothermal amplification (PG-EXPA) coupled with supramolecular fluorescent Zinc(II)-protoporphyrin IX (ZnPPIX)/G-quadruplex. In the presence of DNA adenine methylation (Dam) MTase, the methylation-responsive sequence of hairpin probe is methylated and cleaved by the methylation-sensitive restriction endonuclease Dpn I. The cleaved hairpin probe then functions as a signal primer to initiate the exponential isothermal amplification reaction (EXPAR) by hybridizing with a unimolecular DNA containing three functional domains as the amplification template, producing a large number of G-quadruplex nanostructures by utilizing polymerases and nicking enzymes as mechanical activators. The G-quadruplex nanostructures act as host for ZnPPIX that lead to supramolecular complexes ZnPPIX/G-quadruplex, which provides optical labels for amplified fluorescence detection of Dam MTase. While in the absence of Dam MTase, neither methylation/cleavage nor PG-EXPA reaction can be initiated and no fluorescence signal is observed. The proposed method exhibits a wide dynamic range from 0.0002 to 20U/mL and an extremely low detection limit of 8.6×10(-5)U/mL, which is superior to most conventional approaches for the MTase assay. Owing to the specific site recognition of MTase toward its substrate, the proposed sensing system was able to readily discriminate Dam MTase from other MTase such as M.SssI and even detect the target in a complex biological matrix. Furthermore, the application of the proposed sensing strategy for screening Dam MTase inhibitors was also demonstrated with satisfactory results. This novel method not only provides a promising platform for monitoring activity and inhibition of DNA MTases, but also shows great potentials in biological process researches, drugs discovery and clinical diagnostics.
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Affiliation(s)
- Qingwang Xue
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China.
| | - Yanqin Lv
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Shuling Xu
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Yuanfu Zhang
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Lei Wang
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Rui Li
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Qiaoli Yue
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Haibo Li
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China
| | - Xiaohong Gu
- Shandong Provincial Key Lab of Test Technology on Food Quality and Safety, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shuqiu Zhang
- Shandong Provincial Key Lab of Test Technology on Food Quality and Safety, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Jifeng Liu
- Department of Chemistry, Liaocheng University, Liaocheng 252059, Shandong, China; Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
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100
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Gribas AV, Zhao S, Sakharov IY. Improved method for chemiluminescent determination of peroxidase-mimicking DNAzyme activity. Anal Biochem 2014; 466:19-23. [DOI: 10.1016/j.ab.2014.07.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/08/2014] [Accepted: 07/16/2014] [Indexed: 12/20/2022]
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