1
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Fangyu Zhou, Chen H, Fan T, Guo Z, Liu F. Fluorescence turn-off strategy for sensitive detection of DNA methyltransferase activity based on DNA-templated gold nanoclusters. Heliyon 2023; 9:e17724. [PMID: 37449164 PMCID: PMC10336507 DOI: 10.1016/j.heliyon.2023.e17724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 06/07/2023] [Accepted: 06/26/2023] [Indexed: 07/18/2023] Open
Abstract
DNA methylation results in a variety of human diseases and the DNA methylation process is mediated by DNA methyltransferases, which have therefore become potential targets for disease treatment. In this study, a turn-off nanogold biological probe system was successfully created for determining the activity of DNA methyltransferases (M.SssI MTase). A dumbbell-shaped DNA probe with a site-recognizable region of M. SssI MTase and a fluorescent signal probe based on a DNA-templated gold nanocluster (DNA-AuNC) probe combined for the quantitative detection of M. SssI MTase. This dumbbell-shaped DNA probe was methylated by M. SssI MTase, and the dumbbell-shaped DNA probe with a methyl group was recognized by an endonuclease (GlaI) and cleaved into hairpin DNA. The dGTP was added to the 3'-OH terminus of hairpin DNA fragments in the presence of terminal deoxynucleotidyl transferase (TdT), and the hairpin DNA was extended with a G-rich sequence that can be used as an inactivation probe. When the inactivation probe was combined with the signal probe, the fluorescent signal disappeared due to the photoinduced electron transfer effect. Methyltransferase activity was then detected based on the turn-off principle of the fluorescence signal from the DNA-AuNCs. The bioprobe enabled sensitive detection of M. SssI MTase with a detection limit of 0.178 U mL-1 and good specificity. The bioprobe demonstrated good detection efficiency in both human serum and cell lysates, and its unique fluorescence turn-off mechanism provided good resistance to interference, thus increasing its potential application in complex biological samples. Moreover, it is suitable for screening and assessing the inhibitory activity of M. SssI MTase inhibitors, and therefore has significant potential for disease diagnosis and drug discovery.
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Affiliation(s)
- Fangyu Zhou
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
| | - Hui Chen
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
| | - Tingting Fan
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
| | - Zixia Guo
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
| | - Feng Liu
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Biology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China
- National & Local United Engineering Lab for Personalized Anti-Tumor Drugs, Tsinghua Shenzhen International Graduate School, Shenzhen, 518055, PR China
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2
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Si J, Zhou W, Fang Y, Zhou D, Gao Y, Yao Q, Shen X, Zhu C. Label-Free Detection of T4 Polynucleotide Kinase Activity and Inhibition via Malachite Green Aptamer Generated from Ligation-Triggered Transcription. BIOSENSORS 2023; 13:bios13040449. [PMID: 37185524 PMCID: PMC10135927 DOI: 10.3390/bios13040449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 05/17/2023]
Abstract
Polynucleotide kinase (PNK) is a key enzyme that is necessary for ligation-based DNA repair. The activity assay and inhibitor screening for PNK may contribute to the prediction and improvement of tumor treatment sensitivity, respectively. Herein, we developed a simple, low-background, and label-free method for both T4 PNK activity detection and inhibitor screening by combining a designed ligation-triggered T7 transcriptional amplification system and a crafty light-up malachite green aptamer. Moreover, this method successfully detected PNK activity in the complex biological matrix with satisfactory outcomes, indicating its great potential in clinical practice.
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Affiliation(s)
- Jingyi Si
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Wei Zhou
- Department of School and Nutrition, Shanghai Yangpu District Center for Disease Control and Prevention, Shanghai 200090, China
| | - Ying Fang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Da Zhou
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yifan Gao
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Qunyan Yao
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xizhong Shen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Changfeng Zhu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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3
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Current progress in organic–inorganic hetero-nano-interfaces based electrochemical biosensors for healthcare monitoring. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214282] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Wang HB, Mao AL, Tao BB, Zhang HD, Xiao ZL, Liu YM. L-Histidine-DNA interaction: a strategy for the improvement of the fluorescence signal of poly(adenine) DNA-templated gold nanoclusters. Mikrochim Acta 2021; 188:198. [PMID: 34041600 DOI: 10.1007/s00604-021-04853-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/11/2021] [Indexed: 11/25/2022]
Abstract
An interesting phenomenon is described that the fluorescence signal of poly(adenine) (A) DNA-templated gold nanoclusters (AuNCs) is greatly improved in the presence of L-histidine by means of L-histidine-DNA interaction. The modified nanoclusters display strong fluorescence emission with excitation/emission maxima at 290/475 nm. The fluorescence quantum yield (QY) is improved from 1.9 to 6.5%. Fluorescence enhancement is mainly ascribed to the L-histidine-DNA interaction leading to conformational changes of the poly(A) DNA template, which offer a better microenvironment to protect AuNCs. The assay enables L-histidine to be determined with good sensitivity and a linear response that covers the 1 to 50 nM L-histidine concentration range with a 0.3 nM limit of detection. The proposed method has been applied to the determination of imidazole-containing drugs in pharmaceutical samples. A turn-on fluorescent method has been designed for the sensitive detection of L-histidine as well as imidazole-containing drugs on the basis of the L-histidine-DNA interaction.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Bei-Bei Tao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Zhong-Liang Xiao
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
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5
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Baghdasaryan A, Bürgi T. Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications. NANOSCALE 2021; 13:6283-6340. [PMID: 33885518 DOI: 10.1039/d0nr08489a] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Atomically precise metal nanoclusters (MNCs) have gained tremendous research interest in recent years due to their extraordinary properties. The molecular-like properties that originate from the quantized electronic states provide novel opportunities for the construction of unique nanomaterials possessing rich molecular-like absorption, luminescence, and magnetic properties. The field of monolayer-protected metal nanoclusters, especially copper, with well-defined molecular structures and compositions, is relatively new, about two to three decades old. Nevertheless, the massive progress in the field illustrates the importance of such nanoobjects as promising materials for various applications. In this respect, nanocluster-based catalysts have become very popular, showing high efficiencies and activities for the catalytic conversion of chemical compounds. Biomedical applications of clusters are an active research field aimed at finding better fluorescent contrast agents, therapeutic pharmaceuticals for the treatment and prevention of diseases, the early diagnosis of cancers and other potent diseases, especially at early stages. A huge library of structures and the compositions of copper nanoclusters (CuNCs) with atomic precisions have already been discovered during last few decades; however, there are many concerns to be addressed and questions to be answered. Hopefully, in future, with the combined efforts of material scientists, inorganic chemists, and computational scientists, a thorough understanding of the unique molecular-like properties of metal nanoclusters will be achieved. This, on the other hand, will allow the interdisciplinary researchers to design novel catalysts, biosensors, or therapeutic agents using highly structured, atomically precise, and stable CuNCs. Thus, we hope this review will guide the reader through the field of CuNCs, while discussing the main achievements and improvements, along with challenges and drawbacks that one needs to face and overcome.
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Affiliation(s)
- Ani Baghdasaryan
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
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6
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Ou L, Yang F, Luo J, Duan J, Sun A, Chen L, Wang L. A turn‐on fluorescence assay for heparin based on
DNA
‐templated gold nanoclusters via
ET. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.23945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- LiJuan Ou
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - FaGuo Yang
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - JianXin Luo
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - JiaoJie Duan
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - Aiming Sun
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - LanLan Chen
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
| | - LingYun Wang
- College of Material and Chemical Engineering Hunan Institute of Technology Hengyang P. R. China
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7
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Wang HB, Mao AL, Tao BB, Zhang HD, Liu YM. Fabrication of multiple molecular logic gates made of fluorescent DNA-templated Au nanoclusters. NEW J CHEM 2021. [DOI: 10.1039/d0nj06192a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A universal platform of label-free multiple molecular logic gates have been constructed by taking the advantage of DNA-AuNCs.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Bei-Bei Tao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
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8
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Highly selective fluorimetric and colorimetric sensing of mercury(II) by exploiting the self-assembly-induced emission of 4-chlorothiophenol capped copper nanoclusters. Mikrochim Acta 2020; 187:185. [DOI: 10.1007/s00604-020-4158-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/13/2020] [Indexed: 12/24/2022]
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9
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Recent progress in copper nanocluster-based fluorescent probing: a review. Mikrochim Acta 2019; 186:670. [PMID: 31489488 DOI: 10.1007/s00604-019-3747-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/10/2019] [Indexed: 10/26/2022]
Abstract
Copper nanoclusters (CuNCs) are an attractive alternative to other metal nanoclusters. The synthesis of CuNCs is highly efficient and fast, with low-cost and without any complicated manipulation. Because of their tunable fluorescence and low toxicity, CuNCs have been highly exploited for biochemical sensing. This review (with 172 refs.) summarizes the progress that has been made in the field in the past years. Following an introduction into the fundamentals of CuNCs, the review first focuses on synthetic methods and the fluorescence properties of CuNCs (with subsections on the use of proteins, peptides, DNA and other molecules as templates). This is followed by a section on the use of CuNCs in fluorometric assays, with subsections on the detection of small molecules, proteins, nucleic acids, various other biomolecules including drugs, and of pH values. A further large chapter summarizes the work related to environmental analyses, specifically on determination of metal ions, anions and pollutants. Graphical abstract Schematic representation of the synthesis and potential applications of copper nanocluster (CuNCs) in biochemical analysis, emphatically reflected in some vital areas such as small molecule analysis, biomacromolecule monitoring, cell imaging, ions detection, toxic pollutant, etc.
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10
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Qing Z, Bai A, Xing S, Zou Z, He X, Wang K, Yang R. Progress in biosensor based on DNA-templated copper nanoparticles. Biosens Bioelectron 2019; 137:96-109. [PMID: 31085403 DOI: 10.1016/j.bios.2019.05.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/06/2019] [Indexed: 02/01/2023]
Abstract
During the last decades, by virtue of their unique physicochemical properties and potential application in microelectronics, biosensing and biomedicine, metal nanomaterials (MNs) have attracted great research interest and been highly developed. Deoxyribonucleic acid (DNA) is a particularly interesting ligand for templating bottom-up nanopreparation, by virtue of its excellent properties including nanosized geometry structure, programmable and artificial synthesis, DNA-metal ion interaction and powerful molecular recognition. DNA-templated copper nanoparticles (DNA-CuNPs) has been developed in recent years. Because of its advantages including simple and rapid preparation, high efficiency, MegaStokes shifting and low biological toxicity, DNA-CuNPs has been highly exploited for biochemical sensing from 2010, especially as a label-free detection manner, holding advantages in multiple analytical technologies including fluorescence, electrochemistry, surface plasmon resonance, inductively coupled plasma mass spectrometry and surface enhanced Raman spectroscopy. This review comprehensively tracks the preparation of DNA-CuNPs and its application in biosensing, and highlights the potential development and challenges regarding this field, aiming to promote the advance of this fertile research area.
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Affiliation(s)
- Zhihe Qing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China.
| | - Ailing Bai
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Shuohui Xing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Zhen Zou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; 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
| | - 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
| | - Ronghua Yang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; 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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11
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Zhang Y, Zhao J, Chen S, Li S, Zhao S. A novel microchip electrophoresis laser induced fluorescence detection method for the assay of T4 polynucleotide kinase activity and inhibitors. Talanta 2019; 202:317-322. [PMID: 31171188 DOI: 10.1016/j.talanta.2019.05.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/01/2019] [Accepted: 05/04/2019] [Indexed: 12/19/2022]
Abstract
T4 polynucleotide kinase (T4 PNK) may catalyze the phosphorylation of 5'-hydroxyl termini in nucleic acids, which play a crucial role in DNA recombination, replication and damage repair. Here, a microchip electrophoresis laser induced fluorescence (MCE-LIF) method based on biochemical reaction was developed for the detection of T4 PNK activity and inhibitors. In this method, the single strand DNA (ssDNA) was hybridized with the 5-carboxyfluorescein (FAM) labeled single strand DNA (ssDNA-FAM) to form FAM labeled double-stranded DNA (dsDNA-FAM). In the presence of T4 PNK and adenosine triphosphate (ATP), T4 PNK catalyzes the transfer of γ-phosphate residues from ATP to the 5-hydroxyl terminal of dsDNA-FAM. The phosphorylated dsDNA-FAM can be gradually hydrolyzed by λexo to produce a FAM labeled single nucleotide fragment. Then the FAM labeled single nucleotide fragment and the unhydrolyzed dsDNA-FAM were separated by MCE, and two electrophoresis peaks appeared in the electrophoretogram. The detection of T4 PNK activity and inhibitors was realized by measuring the peak height of the FAM labeled single nucleotide fragment in electrophoretogram. This assay is very sensitive with a limit of detection of 0.002 U/mL, and it can be further used to screen the T4 PNK inhibitors.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Jingjin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
| | - Shenyu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Shuting Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
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12
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Wang HB, Bai HY, Dong GL, Liu YM. DNA-templated Au nanoclusters coupled with proximity-dependent hybridization and guanine-rich DNA induced quenching: a sensitive fluorescent biosensing platform for DNA detection. NANOSCALE ADVANCES 2019; 1:1482-1488. [PMID: 36132614 PMCID: PMC9419426 DOI: 10.1039/c8na00278a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
In this paper, the fluorescence signal of poly(A) DNA-templated Au nanoclusters (AuNCs) is found to be greatly quenched by photoinduced electron transfer (PET) when they are close to guanine (G)-rich DNA. Based on the findings, we have designed a low-cost fluorescence biosensing strategy for the sensitive detection of DNA. Highly luminescent and photo-stable poly(A) DNA-AuNCs were utilized as the fluorescent indicator and G-rich DNA was utilized as the fluorescent quencher. In the absence of target DNA, DNA-AuNCs failed to hybridize with the G-rich DNA and did not form the duplex DNA structure. Strong fluorescence intensity at 475 nm was observed due to the DNA-AuNCs being far away from the G-rich DNA. However, in the presence of target DNA, the DNA-AuNCs together with G-rich DNA could hybridize with the target DNA, leading to the 5' terminus of the DNA-AuNCs and the 3' terminus of G-rich DNA being in close proximity and promoting the cooperative hybridization. Therefore, a "Y" junction structure was formed and the G-rich sequences were brought close to the AuNCs. Therefore, the fluorescence intensity of the sensing system decreased significantly. Taking advantage of the poly(A) DNA-templated Au nanoclusters and G-rich DNA proximity-induced quenching, the strategy could be extended to determine other biomolecules by designing appropriate sequences of DNA probes.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Gao-Li Dong
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
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13
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Cao Q, Li J, Wang E. Recent advances in the synthesis and application of copper nanomaterials based on various DNA scaffolds. Biosens Bioelectron 2019; 132:333-342. [PMID: 30897540 DOI: 10.1016/j.bios.2019.01.046] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/12/2019] [Accepted: 01/15/2019] [Indexed: 12/29/2022]
Abstract
Fluorescent copper nanomaterials (CuNMs), including copper nanoparticles (CuNPs) and copper nanoclusters (CuNCs), become more and more popular with the abundant raw materials and low cost. A wide range of applications has been explored due to their fascinating properties such as low toxicity, remarkable water solubility, facile synthesis, large Stokes shifts, and good biocompatibility. As a kind of genetic material, DNA exhibits its molecular recognition function and diversity. The marriage between CuNMs and DNA endows DNA-templated CuNMs (DNA-CuNMs) with unique properties such as fluorescence, electrochemiluminescence and catalytic features. In this review, we summarize the synthesis and recent applications of DNA-CuNMs. Fluorescent CuNMs can be grown on various DNA scaffolds with special sequence design. T base plays an important role in the formation of CuNMs on DNA templates. These fluorescent DNA-CuNMs hold great prospect in logic gate construction, staining and biosensing of DNAs and RNAs, ions, proteins and enzymes, small molecules and so on.
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Affiliation(s)
- Qiao Cao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jing Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China.
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14
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Development of a rapid RNA extraction procedure from urediniospores of the leaf rust fungus, Puccinia triticina. J Microbiol Methods 2019; 158:1-5. [PMID: 30677452 DOI: 10.1016/j.mimet.2019.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 11/20/2022]
Abstract
Obtaining high quality RNA in good quantities is often a requirement for plant-pathogen interaction studies, so it becomes very essential that a highly efficient method should be deployed to isolate RNA from minute quantities of fungal spores. The methods available to date, either require a high quantity of spores or the use of expensive chemicals. The protocol discussed here for RNA isolation from Puccinia triticina pathotype 77-5 urediniospores utilizes TRI Reagent as extraction buffer that is widely used for RNA isolation from plant tissues. Urediniospores have a tough cell wall as compared to other plant cells. Therefore, the protocol was optimized keeping the primary focus on quickly disrupting cell walls. Two different methods, one using a combination of liquid nitrogen and ultrasonic water-bath and the other method using micro-homogenizer were utilized for crushing the spores in the present study. The developed methods do not utilize mortar and pestle, instead they promote direct crushing of urediniospores in tubes; thereby minimizing sample loss and enhancing quality.
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15
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Fan K, Kang W, Qu S, Li L, Qu B, Lu L. A label-free and enzyme-free fluorescent aptasensor for sensitive detection of acetamiprid based on AT-rich dsDNA-templated copper nanoparticles. Talanta 2019; 197:645-652. [PMID: 30771988 DOI: 10.1016/j.talanta.2019.01.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/15/2019] [Accepted: 01/23/2019] [Indexed: 01/08/2023]
Abstract
A label-free and enzyme-free aptasensor for sensitive assay of acetamiprid has been established using AT-rich double-stranded (ds) DNA-templated copper nanoparticles (CuNPs) as fluorescent probe. In this work, two hairpin DNA, HP1 and HP2, were elaborately designed with AT-rich DNA sequences in their loops. The aptamer of acetamiprid was located at the 3'-terminal of HP1, which was caged in the stem of HP1. Upon the addition of acetamiprid, the aptamer could combine with acetamiprid to form a target/aptamer complex, and thus its free 5'-terminal was released. Subsequently, the protruded 3'-terminal of HP2 could hybridize with the free 5'-terminal of HP1 to form a stable AT-rich dsDNA. When it interacted with Cu2+ and ascorbic acid (AA), the AT-rich dsDNA/CuNPs were generated with strong fluorescence, offering a "switch-on" detection of acetamiprid. The developed strategy could high selectively detect acetamiprid at the concentration as low as 2.37 nM. Moreover, the possibility of this strategy for the food sample analysis was also investigated. The obtained results demonstrate that the developed strategy has a promising application potential for acetamiprid assay in food safety fields.
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Affiliation(s)
- Kaimei Fan
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Wukui Kang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shuaifeng Qu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Long Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Baohan Qu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China
| | - Lihua Lu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, China.
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16
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Chen Z, Niu Y, Cheng G, Tong L, Zhang G, Cai F, Chen T, Liu B, Tang B. A fast, highly sensitive and selective assay of iodide ions with single-stranded DNA-templated copper nanoparticles as a fluorescent probe for its application in Kunming mice samples. Analyst 2018; 142:2781-2785. [PMID: 28653059 DOI: 10.1039/c7an00595d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The development of fast, sensitive, selective and flexible methods for the detection of iodide is highly demanded and is of great significance. In this work, single-stranded DNA-templated copper nanoparticles (ssDNA-CuNPs) generated by sodium ascorbate reduction of Cu2+ along the single-stranded DNA of poly-T were utilized as a fluorescent probe for the determination of iodide ions (I-). The detection scheme is based on the instant quenching of the fluorescence of ssDNA-CuNPs by iodide ions. I- can be quantified in the concentration range from 0.050 to 40 μM and from 40 to 80 μM, and the limit of detection is as low as 15 nM. This method provides a simple and convenient strategy for the biochemical assay of I-, which is also helpful for early diagnosis of related diseases. The establishment of a low cost and fast detection method would be particularly important in developing countries where medical supplies are lacking.
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Affiliation(s)
- Zhenzhen Chen
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Yaxin Niu
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Guiying Cheng
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Lili Tong
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Guanglu 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Feng Cai
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Tingting Chen
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
| | - Bao Liu
- 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. 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, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China.
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17
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Zhang X, Liu Q, Jin Y, Li B. Determination of the activity of T4 polynucleotide kinase phosphatase by exploiting the sequence-dependent fluorescence of DNA-templated copper nanoclusters. Mikrochim Acta 2018; 186:3. [DOI: 10.1007/s00604-018-3102-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/16/2018] [Indexed: 12/23/2022]
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18
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Liu R, Wang C, Hu J, Su Y, Lv Y. DNA-templated copper nanoparticles: Versatile platform for label-free bioassays. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Zhu W, Dai L, Liu Z, Yang W, Zhao C, Li Y, Chen Y. Hairpin-shaped DNA Templated Copper Nanoparticles for Fluorescence Detection of Adenosine Triphosphate Based on Ligation-mediated Exonuclease Cleavage. ANAL SCI 2018; 33:203-207. [PMID: 28190841 DOI: 10.2116/analsci.33.203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
DNA-templated copper nanoparticles (CuNPs) have recently received considerable interest as functional fluorescent probes for biochemical analysis. In this work, a novel ATP-dependent ligation reactions (ATP-DLR) based ATP assay strategy was proposed by using hairpin-shaped (HS) DNA templated CuNPs as a fluorescent probe. Nick sealing by T4 DNA ligase leads to the formation of intact HS DNA, which can resist the exonuclease cleavage and be taken as the template for CuNPs formation, resulting in strong fluorescence. The proposed ATP detection is label free, sensitive and highly selective, and it has good linearity from 0.02 to 4 μM and a detection limit of 7 nM. This strategy is expected to promote the exploitation and application of DNA-templated CuNPs in biochemical and biomedical studies, and holds great promise in fluorescence detection for other ligation-related biomolecules.
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Affiliation(s)
- Wenping Zhu
- College of Chemistry and Chemical Engineering, Zhoukou Normal University
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20
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Abstract
DNA repair is now understood to play a key role in a variety of disease states, most notably cancer. Tools for studying DNA have typically relied on traditional biochemical methods which are often laborious and indirect. Efforts to study the biology and therapeutic relevance of DNA repair pathways can be limited by such methods. Recently, specific fluorescent probes have been developed to aid in the study of DNA repair. Fluorescent probes offer the advantage of being able to directly assay for DNA repair activity in a simple, mix-and-measure format. This review will summarize the distinct classes of probe designs and their potential utility in varied research and preclinical settings.
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Affiliation(s)
- David L. Wilson
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Eric T. Kool
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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21
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Efficient molecular evolution to generate enantioselective enzymes using a dual-channel microfluidic droplet screening platform. Nat Commun 2018. [PMID: 29531246 PMCID: PMC5847605 DOI: 10.1038/s41467-018-03492-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Directed evolution has long been a key strategy to generate enzymes with desired properties like high selectivity, but experimental barriers and analytical costs of screening enormous mutant libraries have limited such efforts. Here, we describe an ultrahigh-throughput dual-channel microfluidic droplet screening system that can be used to screen up to ~107 enzyme variants per day. As an example case, we use the system to engineer the enantioselectivity of an esterase to preferentially produce desired enantiomers of profens, an important class of anti-inflammatory drugs. Using two types of screening working modes over the course of five rounds of directed evolution, we identify (from among 5 million mutants) a variant with 700-fold improved enantioselectivity for the desired (S)-profens. We thus demonstrate that this screening platform can be used to rapidly generate enzymes with desired enzymatic properties like enantiospecificity, chemospecificity, and regiospecificity. Optimizing an enzyme usually requires testing thousands of variants, thus consuming large amounts of material and time. Here, the authors present a method that allows for measuring two different activities of the same enzyme simultaneously instead of doing two consecutive rounds of screening.
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22
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Cu x O@DNA sphere-based electrochemical bioassay for sensitive detection of Pb 2. Mikrochim Acta 2018; 185:186. [PMID: 29594835 DOI: 10.1007/s00604-018-2729-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/09/2018] [Indexed: 10/18/2022]
Abstract
The paper describes a one-step synthetic method to chemically reduce cupric sulfate by ascorbic acid in the presence of DNA strands to directly produce Cu x O@DNA spheres. The DNA strands act as template to assist the preparation of Cu x O, and also are capable of specifically binding Pb(II) ions. The Cu x O@DNA spheres possess high specific surface area and strong bioaffinity. They can be directly employed as platform for detecting Pb2+ sensitively. Electrochemical impedance spectroscopy data showed that the assay exhibits high sensitivity and a wide linear analytical range that extends from 0.1 to 100 nM, and the detection limit is 6.8 pM at a signal-to-noise ratio of 3. The assay is selective, acceptably reproducible, stable, and well feasible for the detection of Pb2+ in blood serum. Graphical abstract Schematic presentation of the preparation of DNA-templated Cu x O spheres (Cu x O@DNA) for use in electrochemical detection of Pb2+. The assay exhibits detection limit of 6.8 pM, high selectivity, acceptable reproducibility, stability, and good applicability for Pb2+ detection.
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23
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Chen Z, Liu C, Cao F, Ren J, Qu X. DNA metallization: principles, methods, structures, and applications. Chem Soc Rev 2018; 47:4017-4072. [DOI: 10.1039/c8cs00011e] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review summarizes the research activities on DNA metallization since the concept was first proposed in 1998, covering the principles, methods, structures, and applications.
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Affiliation(s)
- Zhaowei Chen
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Chaoqun Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Fangfang Cao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
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24
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Momeni S, Ahmadi R, Safavi A, Nabipour I. Blue-emitting copper nanoparticles as a fluorescent probe for detection of cyanide ions. Talanta 2017; 175:514-521. [DOI: 10.1016/j.talanta.2017.07.056] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 01/08/2023]
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25
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Li X, Xu X, Song J, Xue Q, Li C, Jiang W. Sensitive detection of T4 polynucleotide kinase activity based on multifunctional magnetic probes and polymerization nicking reactions mediated hyperbranched rolling circle amplification. Biosens Bioelectron 2017; 91:631-636. [DOI: 10.1016/j.bios.2017.01.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 12/22/2016] [Accepted: 01/11/2017] [Indexed: 11/26/2022]
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26
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Wang Z, Chen B, Rogach AL. Synthesis, optical properties and applications of light-emitting copper nanoclusters. NANOSCALE HORIZONS 2017; 2:135-146. [PMID: 32260657 DOI: 10.1039/c7nh00013h] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Metal nanoclusters (NCs) containing a few to a few hundreds of atoms bridge the gap between nanoparticles and molecular compounds. The last decade evidenced impressive developments of noble metal NCs such as Au and Ag. Copper is an earth abundant, inexpensive metal from the same group of the periodic table, which is increasingly coming into focus for NC research. This review specifically addresses wet chemical synthesis methods, optical properties and some emerging applications of Cu NCs. As surface protecting templates/ligands play an important role in the stability and properties of Cu NCs, we classified the synthetic methods by the nature of the capping agents. The optical properties of Cu NCs are discussed from the point of view of the effects of the metal core, surface ligands and environment (solvents and aggregation) on the emission of the clusters. Applications of luminescent Cu NCs in biological imaging and light emitting devices are considered.
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Affiliation(s)
- Zhenguang Wang
- Department of Physics and Materials Science and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China.
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27
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Wang G, Wan J, Zhang X. TTE DNA–Cu NPs: enhanced fluorescence and application in a target DNA triggered dual-cycle amplification biosensor. Chem Commun (Camb) 2017; 53:5629-5632. [DOI: 10.1039/c7cc02304a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A crowded TTE DNA structure for the preparation of Cu NPs with enhanced fluorescence was prepared and applied for the ultrasensitive detection of target DNA.
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Affiliation(s)
- Guangfeng Wang
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Jing Wan
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Xiaojun Zhang
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
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28
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Li H, Chang J, Hou T, Ge L, Li F. A facile, sensitive, and highly specific trinitrophenol assay based on target-induced synergetic effects of acid induction and electron transfer towards DNA-templated copper nanoclusters. Talanta 2016; 160:475-480. [DOI: 10.1016/j.talanta.2016.07.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 10/21/2022]
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29
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Kricka LJ, Fortina P, Park JY. Nanostructured luminescently labeled nucleic acids. LUMINESCENCE 2016; 32:132-141. [DOI: 10.1002/bio.3170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 05/06/2016] [Accepted: 05/09/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Larry J. Kricka
- Department of Pathology and Laboratory Medicine; University of Pennsylvania Medical Center; 3400 Spruce Street Philadelphia Pennsylvania 19104 USA
| | - Paolo Fortina
- Department of Cancer Biology, Cancer Genomics Laboratory, Sidney Kimmel Cancer Center; Thomas Jefferson University Jefferson Medical College; Philadelphia PA USA
- Department of Molecular Medicine; Universita’ La Sapienza; Rome Italy
| | - Jason Y. Park
- Department of Pathology and the Eugene McDermott Center for Human Growth and Development; University of Texas Southwestern Medical Center; Dallas Texas 75229 USA
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30
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Shi Z, Zhang X, Cheng R, Li B, Jin Y. A label-free cyclic assembly of G-quadruplex nanowires for cascade amplification detection of T4 polynucleotide kinase activity and inhibition. Analyst 2016. [PMID: 26215375 DOI: 10.1039/c5an00968e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Several fluorescence methods have been developed for sensitive detection of PNK activity based on signal amplification techniques, but they need fluorescently labeled DNA probes and superabundant assistant enzymes. We have addressed these limitations and report here a label-free and enzyme-free amplification strategy for sensitively and specifically studying PNK activity and inhibition via hybridization chain reaction (HCR). First, the phosphorylation of hairpin DNA H1 by T4 PNK makes it be specifically digested by lambda exonuclease (λ exo) from 5' to 3' direction to generate a single-stranded initiator which can successively open hairpins H2 and H3 to trigger an autonomous assembly of long DNA nanowires. Meanwhile, an intermolecular G-quadruplex is formed between H2 and H3, thereby providing fluorescence enhancement of N-methyl mesoporphyrin IX (NMM) which is a highly quadruplex-selective fluorophore. So, the PNK activity can be facilely and sensitively detected by using NMM as a signal probe which provides a low background signal to improve the overall sensitivity, resulting in the detection limit of 3.37 × 10(-4) U mL(-1). More importantly, its successful application for detecting PNK activity in a complex biological matrix and studying the inhibition effects of PNK inhibitors demonstrated that it provides a promising platform for screening PNK inhibitors as well as detecting PNK activity. Therefore, it is a highly sensitive, specific, reliable and cost-effective strategy which shows great potential for biological process research, drug discovery, and clinical diagnostics.
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Affiliation(s)
- Zhilu Shi
- 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 Materials Science, Shaanxi Normal University, Xi'an 710062, China.
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31
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Ye T, Li C, Su C, Ji X, Zheng J, Tinnefeld P, He Z. Enzymatic polymerization of poly(thymine) for the synthesis of copper nanoparticles with tunable size and their application in enzyme sensing. Chem Commun (Camb) 2016; 51:8644-7. [PMID: 25899921 DOI: 10.1039/c5cc01517k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A bottom-up strategy was developed for the enzyme mediated synthesis of Cu nanoparticles, which showed good sensing performance.
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Affiliation(s)
- Tai Ye
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, 430072, P. R. China.
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32
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Wang HB, Chen Y, Li Y, Liu YM. A sensitive fluorescence sensor for glutathione detection based on MnO2 nanosheets–copper nanoclusters composites. RSC Adv 2016. [DOI: 10.1039/c6ra17850b] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A sensitive fluorescence sensor has been developed for glutathione detection based on MnO2 nanosheets–Cu NCs composites.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Ying Chen
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Yang Li
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- PR China
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33
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Lai QQ, Liu MD, Gu CC, Nie HG, Xu XJ, Li ZH, Yang Z, Huang SM. A novel label-free fluorescence strategy for methyltransferase activity assay based on dsDNA-templated copper nanoparticles coupled with an endonuclease-assisted signal transduction system. Analyst 2016; 141:1383-9. [DOI: 10.1039/c5an02123e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel label-free fluorescence method by coupling dsDNA-templated CuNPs with endonuclease-assisted signal transduction has been developed for methyltransferase activity assay.
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Affiliation(s)
- Q. Q. Lai
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - M. D. Liu
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - C. C. Gu
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - H. G. Nie
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - X. J. Xu
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - Z. H. Li
- The Institute of Molecular Medicine
- School of Optometry and Ophthalmology and Eye Hospital
- Wenzhou Medical University
- Wenzhou
- P. R. China
| | - Z. Yang
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
| | - S. M. Huang
- Nanomaterials and Chemistry Key Laboratory
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P. R. China
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34
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Dong ZZ, Zhang L, Qiao M, Ge J, Liu AL, Li ZH. A label-free assay for T4 polynucleotide kinase/phosphatase activity and its inhibitors based on poly(thymine)-templated copper nanoparticles. Talanta 2016; 146:253-8. [DOI: 10.1016/j.talanta.2015.08.055] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/17/2015] [Accepted: 08/24/2015] [Indexed: 01/01/2023]
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35
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Wang HB, Zhang HD, Chen Y, Liu YM. A fluorescent biosensor for protein detection based on poly(thymine)-templated copper nanoparticles and terminal protection of small molecule-linked DNA. Biosens Bioelectron 2015; 74:581-6. [DOI: 10.1016/j.bios.2015.07.021] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/05/2015] [Accepted: 07/10/2015] [Indexed: 12/28/2022]
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36
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Lian S, Liu C, Zhang X, Wang H, Li Z. Detection of T4 polynucleotide kinase activity based on cationic conjugated polymer-mediated fluorescence resonance energy transfer. Biosens Bioelectron 2015; 66:316-20. [DOI: 10.1016/j.bios.2014.11.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 11/20/2014] [Accepted: 11/21/2014] [Indexed: 10/24/2022]
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37
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Zhao J, Hu S, Cao Y, Zhang B, Li G. Electrochemical detection of protein based on hybridization chain reaction-assisted formation of copper nanoparticles. Biosens Bioelectron 2015; 66:327-31. [DOI: 10.1016/j.bios.2014.11.039] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/11/2014] [Accepted: 11/20/2014] [Indexed: 12/30/2022]
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38
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Zhang H, Lin Z, Su X. Label-free detection of exonuclease III by using dsDNA–templated copper nanoparticles as fluorescent probe. Talanta 2015; 131:59-63. [DOI: 10.1016/j.talanta.2014.07.065] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/17/2014] [Accepted: 07/21/2014] [Indexed: 11/26/2022]
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39
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Hu W, Ning Y, Kong J, Zhang X. Formation of copper nanoparticles on poly(thymine) through surface-initiated enzymatic polymerization and its application for DNA detection. Analyst 2015; 140:5678-84. [DOI: 10.1039/c5an01109d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A DNA biosensor using polyT-templated CuNPs as the fluorescent probe and SIEP as the signal amplification strategy is proposed.
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Affiliation(s)
- Weiwen Hu
- School of Environmental and Biological Engineering
- Nanjing University of Science & Technology
- Nanjing 210094
- P. R. China
| | - Yong Ning
- School of Laboratory Medicine
- Hubei University of Chinese Medicine
- Wuhan 430065
- P. R. China
| | - Jinming Kong
- School of Environmental and Biological Engineering
- Nanjing University of Science & Technology
- Nanjing 210094
- P. R. China
| | - Xueji Zhang
- School of Environmental and Biological Engineering
- Nanjing University of Science & Technology
- Nanjing 210094
- P. R. China
- Chemistry Department
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40
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Sun NN, Kong RM, Qu F, Zhang X, Zhang S, You J. An amplified fluorescence detection of T4 polynucleotide kinase activity based on coupled exonuclease III reaction and a graphene oxide platform. Analyst 2015; 140:1827-31. [DOI: 10.1039/c4an01953a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel amplified fluorescence graphene oxide (GO) sensing system for sensitive detection of T4 polynucleotide kinase (PNK) activity and inhibition was developed based on the exonuclease III (ExoIII) reaction.
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Affiliation(s)
- Ni-Na Sun
- The Key Laboratory of Life-Organic Analysis
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Rong-Mei Kong
- The Key Laboratory of Life-Organic Analysis
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Fengli Qu
- The Key Laboratory of Life-Organic Analysis
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Xiaobing Zhang
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Shufang Zhang
- The Key Laboratory of Life-Organic Analysis
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
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41
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Zhou L, Shen X, Sun N, Wang K, Zhang Y, Pei R. Label-free fluorescence light-up detection of T4 polynucleotide kinase activity using the split-to-intact G-quadruplex strategy by ligation-triggered and toehold-mediated strand displacement release. Analyst 2015; 140:5450-3. [DOI: 10.1039/c5an01032b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free, fluorescence light-up detection method for T4 polynucleotide kinase activity has been developed using the split-to-intact G-quadruplex strategy.
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Affiliation(s)
- Lu Zhou
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
| | - Xiaoqiang Shen
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
| | - Na Sun
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
| | - Kewei Wang
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
| | - Yuanyuan Zhang
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
| | - Renjun Pei
- Key Laboratory of Nano-Bio Interfacce
- Division of Nanobiomedicine
- Suzhou Insitute of Nano-Tech and Nano-Bionics
- Chinese Academy of Science
- Suzhou
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42
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Wang HB, Zhang HD, Chen Y, Li Y, Gan T. H2O2-mediated fluorescence quenching of double-stranded DNA templated copper nanoparticles for label-free and sensitive detection of glucose. RSC Adv 2015. [DOI: 10.1039/c5ra14852a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A label-free fluorescent sensor has been developed for glucose detection based on H2O2-mediated fluorescence quenching of ds-DNA templated Cu NPs.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Ying Chen
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Yang Li
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- PR China
| | - Tian Gan
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- PR China
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43
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Wang HB, Zhang HD, Chen Y, Liu YM. Inhibition of double-stranded DNA templated copper nanoparticles as label-free fluorescent sensors for l-histidine detection. NEW J CHEM 2015. [DOI: 10.1039/c5nj01847a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free fluorescent sensing strategy was reported for l-histidine detection by the inhibition of double-stranded DNA templated copper nanoparticles.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Ying Chen
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
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44
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Song Q, Shi Y, He D, Xu S, Ouyang J. Sequence-dependent dsDNA-templated formation of fluorescent copper nanoparticles. Chemistry 2014; 21:2417-22. [PMID: 25510235 DOI: 10.1002/chem.201405726] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Indexed: 12/21/2022]
Abstract
There are only a few systematic rules about how to selectively control the formation of DNA-templated metal nanoparticles (NPs) by varying sequence combinations of double-stranded DNA (dsDNA), although many attempts have been made. Herein, we develop a facile method for sequence-dependent formation of fluorescent CuNPs by using dsDNA as templates. Compared with random sequences, AT sequences are better templates for highly fluorescent CuNPs. Other specific sequences, for example, GC sequences, do not induce the formation of CuNPs. These results shed light on directed DNA metallization in a sequence-specific manner. Significantly, both the fluorescence intensity and the fluorescence lifetime of CuNPs can be tuned by the length or the sequence of dsDNA. In order to demonstrate the promising practicality of our findings, a sensitive and label-free fluorescence nuclease assay is proposed.
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Affiliation(s)
- Quanwei Song
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875 (P.R. China)
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45
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Du J, Xu Q, Lu X, Zhang CY. A label-free bioluminescent sensor for real-time monitoring polynucleotide kinase activity. Anal Chem 2014; 86:8481-8. [PMID: 25048013 DOI: 10.1021/ac502240c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polynucleotide kinase (PNK) plays a crucial role in maintaining the genomic stability of cells and is becoming a potential target in the radio-therapeutic treatment of cancers. The fluorescent method is usually used to measure the PNK activity, but it is impossible to obtain the real-time monitoring without the employment of the labeled DNA probes. Here, we report a label-free bioluminescent sensor for PNK activity assay through real-time monitoring of the phosphorylation-dependent DNA ligation reaction. In this bioluminescent sensor, two hairpin DNA probes with 5'-protruding terminal are designed as the phosphate acceptor, and the widely used phosphate donor of ATP is substituted by dCTP. In the absence of PNK, the ligation reaction cannot be triggered due to the lack of 5'-phosphoryl groups in the probes, and the background signal is negligible. With the addition of PNK, the phosphorylation-ligation reaction of the probes is initiated with the release of AMP, and the subsequent conversion of AMP to ATP leads to the generation of distinct bioluminescence signal. The PNK activity assay can be performed in real time by continuously monitoring the bioluminescence signal. This bioluminescent sensor is much simpler, label-free, cost-effective, and free from the autofluorescence interference of biological matrix, and can be further used for quantitative, kinetic, and inhibition assay.
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Affiliation(s)
- Jiao Du
- Key Laboratory of Bioelectrochemistry & Environmental analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University , Lanzhou 730070, China
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46
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Tao M, Zhang J, Jin Y, Li B. Highly sensitive fluorescence assay of T4 polynucleotide kinase activity and inhibition via enzyme-assisted signal amplification. Anal Biochem 2014; 464:63-9. [PMID: 25058928 DOI: 10.1016/j.ab.2014.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 12/20/2022]
Abstract
DNA phosphorylation catalyzed by polynucleotide kinase (PNK) is an indispensable process in the repair, replication, and recombination of nucleic acids. Here, an enzyme-assisted amplification strategy was developed for the ultrasensitive monitoring activity and inhibition of T4 PNK. A hairpin oligonucleotide (hpDNA) was designed as a probe whose stem can be degraded from the 5' to 3' direction by lambda exonuclease (λ exo) when its 5' end is phosphorylated by PNK. So, the 3' stem and loop part of hpDNA was released as an initiator strand to open a molecular beacon (MB) that was designed as a fluorescence reporter, leading to a fluorescence restoration. Then, the initiator strand was released again by the nicking endonuclease (Nt.BbvCI) to hybridize with another MB, resulting in a cyclic reaction and accumulation of fluorescence signal. Based on enzyme-assisted amplification, PNK activity can be sensitively and rapidly detected with a detection limit of 1.0×10(-4)U/ml, which is superior to those of most existing approaches. Furthermore, the application of the proposed strategy for screening PNK inhibitors also demonstrated satisfactory results. Therefore, it provided a promising platform for monitoring activity and inhibition of PNK as well as for studying the activity of other nucleases.
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Affiliation(s)
- Mangjuan Tao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Jing Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Yan Jin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Baoxin Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, and Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
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47
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Xu F, Shi H, He X, Wang K, He D, Guo Q, Qing Z, Yan L, Ye X, Li D, Tang J. Concatemeric dsDNA-templated copper nanoparticles strategy with improved sensitivity and stability based on rolling circle replication and its application in microRNA detection. Anal Chem 2014; 86:6976-82. [PMID: 24958493 DOI: 10.1021/ac500955r] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
DNA-templated copper nanoparticles (CuNPs) have emerged as promising fluorescent probes for biochemical assays, but the reported monomeric CuNPs remain problematic because of weak fluorescence and poor stability. To solve this problem, a novel concatemeric dsDNA-templated CuNPs (dsDNA-CuNPs) strategy was proposed by introducing the rolling circle replication (RCR) technique into CuNPs synthesis. In this strategy, a short oligonucleotide primer could trigger RCR and be further converted to a long concatemeric dsDNA scaffold through hybridization. After the addition of copper ions and ascorbate, concatemeric dsDNA-CuNPs could effectively form and emit intense fluorescence in the range of 500-650 nm under a 340 nm excitation. In comparison with monomeric dsDNA-CuNPs, the sensitivity of concatemeric dsDNA-CuNPs was greatly improved with ~10,000 folds amplification. And their fluorescence signal was detected to reserve ~60% at 2.5 h after formation, revealing ~2 times enhanced stability. On the basis of these advantages, microRNA let-7d was selected as the model target to testify this strategy as a versatile assay platform. By directly using let-7d as the primer in RCR, the simple, low-cost, and selective microRNA detection was successfully achieved with a good linearity between 10 and 400 pM and a detection limit of 10 pM. The concatemeric dsDNA-CuNPs strategy might be widely adapted to various analytes that can directly or indirectly induce RCR.
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Affiliation(s)
- Fengzhou Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Biology, Hunan University , Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, China
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48
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Jiang HX, Kong DM, Shen HX. Amplified detection of DNA ligase and polynucleotide kinase/phosphatase on the basis of enrichment of catalytic G-quadruplex DNAzyme by rolling circle amplification. Biosens Bioelectron 2014; 55:133-8. [DOI: 10.1016/j.bios.2013.12.001] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/24/2013] [Accepted: 12/01/2013] [Indexed: 12/01/2022]
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49
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Sensitive detection of T4 polynucleotide kinase activity based on coupled exonuclease reaction and nicking enzyme-assisted fluorescence signal amplification. Anal Bioanal Chem 2014; 406:2943-8. [DOI: 10.1007/s00216-014-7719-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 02/15/2014] [Accepted: 02/21/2014] [Indexed: 10/25/2022]
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50
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Tang W, Zhu G, Zhang CY. Sensitive detection of polynucleotide kinase using rolling circle amplification-induced chemiluminescence. Chem Commun (Camb) 2014; 50:4733-5. [DOI: 10.1039/c4cc00256c] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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