1
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Sharma P, Ganguly M, Doi A. Synergism between copper and silver nanoclusters induces fascinating structural modifications, properties, and applications. NANOSCALE 2024. [PMID: 39302164 DOI: 10.1039/d4nr03114h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Among the group 11 transition metal elements, Cu and Ag are widely studied due to their cost effectiveness and easy availability. However, the synergism between copper and silver is also very promising, exhibiting intriguing structures, properties, and applications. Nanoclusters, which are missing links between atoms and nanoparticles, are highly fluorescent due to their discrete energy levels. Their fluorescence can be efficiently tuned because of the synergistic behaviour of copper and silver. Furthermore, their fluorescence can be selectively altered in the presence of various analytes and sensing platforms, as reported by various groups. Moreover, copper clusters can be utilized for sensing silver while silver nanoclusters can be utilized for sensing ionic copper due to the strong interaction between copper and silver. Furthermore, DFT studies have been performed to understand the structural modification due to CuAg synergism. A concise summary of the synergism between copper and silver can open a new window of research for young scientists venturing into the field of environmental nanoscience.
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Affiliation(s)
- Priyanka Sharma
- Solar Energy Conversion and Nanomaterials Laboratory, Department of Chemistry, Manipal University Jaipur, Dehmi Kalan, Jaipur 303007, India.
| | - Mainak Ganguly
- Solar Energy Conversion and Nanomaterials Laboratory, Department of Chemistry, Manipal University Jaipur, Dehmi Kalan, Jaipur 303007, India.
| | - Ankita Doi
- Department of BioSciences, Manipal University Jaipur, Dehmi Kalan, Jaipur 303007, India
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2
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Rajeev A, Bhatia D. DNA-templated fluorescent metal nanoclusters and their illuminating applications. NANOSCALE 2024. [PMID: 39292491 DOI: 10.1039/d4nr03429e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
After the discovery of DNA during the mid-20th century, a multitude of novel methodologies have surfaced which exploit DNA for its various properties. One such recently developed application of DNA is as a template in metal nanocluster formation. In the early years of the new millennium, a group of researchers found that DNA can be adopted as a template for the binding of metal nanoparticles that ultimately form nanoclusters. Three metal nanoclusters have been studied so far, including silver, gold, and copper, which have a plethora of biological applications. This review focuses on the synthesis, mechanisms, and novel applications of DNA-templated metal nanoclusters, including the therapies that have employed them for their wide range of fluorescent properties, and the future perspectives related to their development by exploiting machine learning algorithms and molecular dynamics simulation studies.
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Affiliation(s)
- Ashwin Rajeev
- Department of Biological Sciences and Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat-382355, India.
| | - Dhiraj Bhatia
- Department of Biological Sciences and Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat-382355, India.
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3
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Li XY, Zhou XD, Hu JM. Peptides in the detection of metal ions. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 39269217 DOI: 10.1039/d4ay01232a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
By means of their specific interactions with different metal ions, naturally occurring proteins control structures and functions of many biological processes and functions in organisms. In view of natural metallopeptides, scientists have proposed artificial peptides which coordinate with metal ions through their functional groups either for introducing a special reactivity or for constructing various sensors. However, the design of new peptide ligands requires a deep understanding of the structures, assembly properties, and dynamic behaviors of such peptides. This review briefly describes detection strategies of metal ions via coordination to the binding sites in peptides. The principles and functions of sensing systems are described as well. We also highlight some examples of a metal-induced peptide self-assembly with relevance to biotechnology applications.
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Affiliation(s)
- Xin-Yi Li
- Core Facility of Wuhan University, Wuhan University, Wuhan 430072, PR China
| | - Xiao-Dong Zhou
- Core Facility of Wuhan University, Wuhan University, Wuhan 430072, PR China
| | - Ji-Ming Hu
- Core Facility of Wuhan University, Wuhan University, Wuhan 430072, PR China
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4
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Zhou B, Khan IM, Ding X, Niazi S, Zhang Y, Wang Z. Fluorescent DNA-Silver nanoclusters in food safety detection: From synthesis to application. Talanta 2024; 273:125834. [PMID: 38479031 DOI: 10.1016/j.talanta.2024.125834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 04/09/2024]
Abstract
In recent years, the conventional preparation of silver nanoclusters (AgNCs) has attracted much attention due to their ultra-small size, tunable fluorescence, easy-to-engineer, as well as biocompatible material. Moreover, its great affinity towards cytosine bases on single-stranded DNA has led to the construction of biosensors, especially aptamers, for a broad variety of applications in food safety and environmental protection. In past years, numerous researchers paid attention to the construction of AgNCs aptasensor. Therefore, this review will be an effort to summarize the synthetic strategy along with the influences of factors on synthesis, categorize the sensing mechanism of aptamer-functionalized AgNCs biosensors, as well as their specific applications in food safety detection including heavy metal, toxin, and foodborne pathogenic bacteria. Furthermore, a brief conclusion and outlook regarding the prospects and challenges of their applications in food safety were drawn in line with the developments in DNA-AgNCs.
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Affiliation(s)
- Bingxuan Zhou
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Imran Mahmood Khan
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, 315100, China.
| | - Xiaowei Ding
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Sobia Niazi
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Yin Zhang
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, PR China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; International Joint Laboratory on Food Safety, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, PR China.
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5
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Luo W, Wu S, Jiang Y, Xu P, Zou J, Qian J, Zhou X, Ge Y, Nie H, Yang Z. Efficient Electrocatalytic Nitrate Reduction to Ammonia Based on DNA-Templated Copper Nanoclusters. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18928-18939. [PMID: 37014152 DOI: 10.1021/acsami.3c00511] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
In alkaline solutions, the electrocatalytic conversion of nitrates to ammonia (NH3) (NO3RR) is hindered by the sluggish hydrogenation step due to the lack of protons on the electrode surface, making it a grand challenge to synthesize NH3 at a high rate and selectivity. Herein, single-stranded deoxyribonucleic acid (ssDNA)-templated copper nanoclusters (CuNCs) were synthesized for the electrocatalytic production of NH3. Because ssDNA was involved in the optimization of the interfacial water distribution and H-bond network connectivity, the water-electrolysis-induced proton generation was enhanced on the electrode surface, which facilitated the NO3RR kinetics. The activation energy (Ea) and in situ spectroscopy studies adequately demonstrated that the NO3RR was exothermic until NH3 desorption, indicating that, in alkaline media, the NO3RR catalyzed by ssDNA-templated CuNCs followed the same reaction path as the NO3RR in acidic media. Electrocatalytic tests further verified the efficiency of ssDNA-templated CuNCs, which achieved a high NH3 yield rate of 2.62 mg h-1 cm-2 and a Faraday efficiency of 96.8% at -0.6 V vs reversible hydrogen electrode. The results of this study lay the foundation for engineering catalyst surface ligands for the electrocatalytic NO3RR.
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Affiliation(s)
- Wenjie Luo
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Shilu Wu
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Yingyang Jiang
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Peng Xu
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Jinxuan Zou
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Jinjie Qian
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Xuemei Zhou
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Yongjie Ge
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Huagui Nie
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Zhi Yang
- Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
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6
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Liu Y, Guan B, Xu Z, Wu Y, Wang Y, Ning G. A fluorescent assay for sensitive detection of kanamycin by split aptamers and DNA-based copper/silver nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:121953. [PMID: 36242838 DOI: 10.1016/j.saa.2022.121953] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Kanamycin was a group of essential antibiotics generally served in treating infections of animals which leached into the environment residual in food, causing health concerns. Thus, selective and sensitive monitoring of kanamycin was significant for food safety. In this work, split aptamers were used as templates to prepare fluorescent Cu/Ag NCs for detection of kanamycin. According to the impressive affinity of the aptamer to kanamycin, two different detection modes were designed using kanamycin aptamer as a recognition molecule, in which one was to combine split aptamer Apt-1 with Apt-2 to form an entangled DNA as a Cu/Ag NCs template, the other was to associate the normal aptamer after encirclement to form Cu/Ag NCs templates. After the addition of kanamycin, the fluorescence signals of the Cu/Ag NCs synthesized in the two modes were both enhanced, but the approach with split aptamer exhibited a superior observable sensitivity than that of the normal type. The detection range showed a well linear relationship between 80 nM and 10 μM when the emission wavelength was 560 nm, and the detection limit was 13.3 nM. In addition, when streptomycin, oxytetracycline, chloramphenicol and chlortetracycline were involved in the selective interference experiment under the same conditions, the fluorescence intensity of the system performed no significant changes. The results demonstrated that this method possessed favorable specificity and selectivity for the assay of kanamycin, proficiently achieving efficient, rapid and sensitive evaluation of kanamycin in the milk samples.
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Affiliation(s)
- Yan Liu
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, Central South University of Forestry and Technology, 410004 Changsha, China; School of Biology and Biological Engineering, South China University of Technology, 510006 Guangzhou, China
| | - Baibing Guan
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, Central South University of Forestry and Technology, 410004 Changsha, China
| | - Ziqi Xu
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, Central South University of Forestry and Technology, 410004 Changsha, China
| | - Yaohui Wu
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, Central South University of Forestry and Technology, 410004 Changsha, China
| | - Yonghong Wang
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology, Central South University of Forestry and Technology, 410004 Changsha, China.
| | - Ge Ning
- International Education Institute, Hunan University of Chinese Medicine, 410208 Changsha, China.
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7
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EEfficient Detection of CN− and Cu2+ Ions by Styryl-BODIPY based Multifunctional Chemosensor in Semi-aqueous Medium. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Xiong Y, An Q, Qiao N, Chen Y, Zhou J, Luo D, Zhang H, Wang Y, Xu D, Yuan Z. Electrolysis‐Mediated Rapid Synthesis of Highly Fluorescent and pH Responsive Congo Red Carbon Nanodots for Cu
2+
Sensing. ChemistrySelect 2022. [DOI: 10.1002/slct.202203435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Yuanyuan Xiong
- Department of Neurosurgery The Second Affiliated Hospital of Nanchang University Nanchang JiangXi 330000 China
| | - Qingxiao An
- Central South University of Forestry & Technology Changsha Hunan 410004 China
| | - Niqin Qiao
- Hunan Zhixiangweilai Biotechnology Co., Ltd Changsha Hunan 410125 China
| | - Yi Chen
- Hunan Zhixiangweilai Biotechnology Co., Ltd Changsha Hunan 410125 China
| | - Jia‐Quan Zhou
- Department of Urology Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University) Haikou Hainan 570000 China
| | - Dong‐Ni Luo
- Department of Urology Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University) Haikou Hainan 570000 China
| | - Huan‐Tsung Zhang
- Hunan Zhixiangweilai Biotechnology Co., Ltd Changsha Hunan 410125 China
| | - Yang Wang
- Department of Urology Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University) Haikou Hainan 570000 China
| | - Dong Xu
- Central South University of Forestry & Technology Changsha Hunan 410004 China
| | - Zhiqin Yuan
- College of Chemistry Beijing University of Chemical Technology Beijing 100029 China
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9
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Shi H, Bi X, Zhang J, Duan S, Yan J, Jia H. Simple and sensitive detection of microRNA based on guanine-rich DNA-enhanced fluorescence of DNA-templated silver clusters. Talanta 2022. [DOI: 10.1016/j.talanta.2022.124065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Niknezhad M, Lakouraj MM, Chaichi MJ, Nemati A. A facile chemiluminescence strategy for copper( ii) ion detection utilizing azothiacalix[4]arene-functionalized carboxymethylcellulose polymeric ligand. NEW J CHEM 2022. [DOI: 10.1039/d2nj00451h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The design and characterization of azothiacalix[4]arene-functionalized carboxymethylcellulose, used for the detection of nanomolar levels of Cu2+via a chemiluminescence method.
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Affiliation(s)
- Mahvash Niknezhad
- Department of Organic-polymer chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, 47416–95447, Iran
| | - Moslem Mansour Lakouraj
- Department of Organic-polymer chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, 47416–95447, Iran
| | - Mohammad Javad Chaichi
- Department of analytical chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, 47416–95447, Iran
| | - Afsaneh Nemati
- Department of analytical chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, 47416–95447, Iran
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12
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Xue Y, Cheng Z, Luo M, Hu H, Xia C. Synthesis of Copper Nanocluster and Its Application in Pollutant Analysis. BIOSENSORS 2021; 11:424. [PMID: 34821639 PMCID: PMC8615659 DOI: 10.3390/bios11110424] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 10/26/2021] [Accepted: 10/26/2021] [Indexed: 05/09/2023]
Abstract
Copper nanoclusters (Cu NCs) with their inherent optical and chemical advantages have gained increasing attention as a kind of novel material that possesses great potential, primarily in the use of contaminants sensing and bio-imaging. With a focus on environmental safety, this article comprehensively reviews the recent advances of Cu NCs in the application of various contaminants, including pesticide residues, heavy metal ions, sulfide ions and nitroaromatics. The common preparation methods and sensing mechanisms are summarized. The typical high-quality sensing probes based on Cu NCs towards various target contaminants are presented; additionally, the challenges and future perspectives in the development and application of Cu NCs in monitoring and analyzing environmental pollutants are discussed.
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Affiliation(s)
- Yan Xue
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China; (Y.X.); (Z.C.); (M.L.)
| | - Zehua Cheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China; (Y.X.); (Z.C.); (M.L.)
| | - Mai Luo
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China; (Y.X.); (Z.C.); (M.L.)
| | - Hao Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China; (Y.X.); (Z.C.); (M.L.)
| | - Chenglai Xia
- Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University, Foshan 528000, China
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510150, China
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13
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Ouyang Y, Zhang P, Manis-Levy H, Paltiel Y, Willner I. Transient Dissipative Optical Properties of Aggregated Au Nanoparticles, CdSe/ZnS Quantum Dots, and Supramolecular Nucleic Acid-Stabilized Ag Nanoclusters. J Am Chem Soc 2021; 143:17622-17632. [PMID: 34643387 DOI: 10.1021/jacs.1c07895] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Transient, dissipative, aggregation and deaggregation of Au nanoparticles (NPs) or semiconductor quantum dots (QDs) leading to control over their transient optical properties are introduced. The systems consist of nucleic acid-modified pairs of Au NPs or pairs of CdSe/ZnS QDs, an auxiliary duplex L1/T1, and the nicking enzyme Nt.BbvCI as functional modules yielding transient aggregation/deaggregation of the NPs and dynamically controlling over their optical properties. In the presence of a fuel strand L1', the duplex L1/T1 is separated, leading to the release of T1 and the formation of duplex L1/L1'. The released T1 leads to aggregation of the Au NPs or to the T1-induced G-quadruplex bridged aggregated CdSe/ZnS QDs. Biocatalytic nicking of the L1/L1' duplex fragments L1' and the released L1 displaces T1 bridging the aggregated NPs or QDs, resulting in the dynamic recovery of the original NPs or QDs modules. The dynamic aggregation/deaggregation of the Au NPs is followed by the transient interparticle plasmon coupling spectral changes. The dynamic aggregation/deaggregation of the CdSe/ZnS QDs is probed by following the transient chemiluminescence generated by the hemin/G-quadruplexes bridging the QDs and by the accompanying transient chemiluminescence resonance energy transfer proceeding in the dynamically formed QDs aggregates. A third system demonstrating transient, dissipative, luminescence properties of a reaction module consisting of nucleic acid-stabilized Ag nanoclusters (NCs) is introduced. Transient dynamic formation and depletion of the supramolecular luminescent Ag NCs system via strand displacement accompanied by a nicking process are demonstrated.
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Affiliation(s)
- Yu Ouyang
- The Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Pu Zhang
- The Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Hadar Manis-Levy
- Department of Applied Physics, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Yossi Paltiel
- Department of Applied Physics, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Itamar Willner
- The Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Chen L, Cheng Z, Luo M, Wang T, Zhang L, Wei J, Wang Y, Li P. Fluorescent noble metal nanoclusters for contaminants analysis in food matrix. Crit Rev Food Sci Nutr 2021:1-19. [PMID: 34658279 DOI: 10.1080/10408398.2021.1990010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recently, food safety issues caused by contaminants have aroused great public concern. The development of innovative and efficient sensing techniques for contaminants detection in food matrix is in urgent demand. As fluorescent nanomaterials, noble metal nanoclusters have attracted much attention because of their ease of synthesis, enhanced catalytic activity and biocompatibility, and most importantly, excellent photoluminescence property that provides promising analytical applications. This review comprehensively introduced the synthesis method of noble metal nanoclusters, and summarized the application of metal nanoclusters as fluorescent sensing materials in the detection of pollutants, including pesticides, heavy metal, mycotoxin, food additives, and other contaminants in food. The detection mechanism of pesticide residues mostly relies on the inhibition of natural enzymes. For heavy metals, the detection mechanism is mainly related to the interaction between metal ions and nanoclusters or ligands. It is evidenced that metal nanoclusters have great potential application in the field of food safety monitoring. Moreover, challenges and future trends of nanoclusters were discussed. We hope that this review can provide insights and directions for the application of nanoclusters in contaminants detection.
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Affiliation(s)
- Ling Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Zehua Cheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Mai Luo
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Ting Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Lei Zhang
- Laboratory Animal Center, Sichuan Academy of Chinese Medicine Sciences, Chengdu, China
| | - Jinchao Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
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15
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Ma GM, Huo LW, Tong YX, Wang YC, Li CP, Jia HX. Label-free and sensitive MiRNA detection based on turn-on fluorescence of DNA-templated silver nanoclusters coupled with duplex-specific nuclease-assisted signal amplification. Mikrochim Acta 2021; 188:355. [PMID: 34585278 DOI: 10.1007/s00604-021-05001-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/24/2021] [Indexed: 11/30/2022]
Abstract
A novel strategy for microRNAs (miRNAs) detection has been developed utilizing duplex-specific nuclease-assisted signal amplification (DSNSA) and guanine-rich DNA-enhanced fluorescence of DNA-templated silver nanoclusters (AgNCs). The combination between target miRNA, DSNSA, and AgNCs is achieved by the unique design of DNA sequences. Target miRNA opens the hairpin structure of the Hairpin DNA probe (HP) by hybridizing with the HP and initiates the duplex-specific nuclease-assisted signal amplification (DSNSA) reaction. The DSNSA reaction generates the release of the guanine-rich DNA sequence, which can turn on the fluorescence of the dark AgNCs by hybridizing with the DNA template of the dark AgNCs. The fluorescence intensity of AgNCs corresponds to the dosage of the target miRNA. This is measured at 630 nm by exciting at 560 nm. The constructed method exhibits a low detection limit (~8.3 fmol), a great dynamic range of more than three orders of magnitude, and excellent selectivity. Moreover, it has a good performance for miR-21 detection in complex biological samples. A novel strategy for microRNAs (miRNAs) detection has been developed utilizing duplex-specific nuclease-assisted signal amplification (DSNSA) and guanine-rich DNA-enhanced fluorescence of DNA-templated silver nanoclusters (AgNCs).
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Affiliation(s)
- Gui-Min Ma
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Key Laboratory of Analytical Science and Technology of Hebei Province; Institute of Life Science and Green Development; College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Li-Wei Huo
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Key Laboratory of Analytical Science and Technology of Hebei Province; Institute of Life Science and Green Development; College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Yin-Xia Tong
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Key Laboratory of Analytical Science and Technology of Hebei Province; Institute of Life Science and Green Development; College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Yu-Cong Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Key Laboratory of Analytical Science and Technology of Hebei Province; Institute of Life Science and Green Development; College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China
| | - Cui-Ping Li
- Key Laboratory of Public Health Safety of Hebei Province; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; College of Public Health, Hebei University, Baoding, 071002, People's Republic of China
| | - Hong-Xia Jia
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Key Laboratory of Analytical Science and Technology of Hebei Province; Institute of Life Science and Green Development; College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, Hebei Province, People's Republic of China.
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Chen J, Wang M, Bao Y, Xie X, Nie Y, Lv Y, Su X. Construction of a Sensing Platform Based on DNA-Encoded Magnetic Beads and Copper Nanoclusters for Viral Gene Analysis with Target Recycling Amplification. ACS APPLIED BIO MATERIALS 2021; 4:5669-5677. [PMID: 35006751 DOI: 10.1021/acsabm.1c00460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The rapid and accurate monitoring of viral genes plays an important role in the area of disease diagnosis, biomedical research, and food safety. Herein, we successfully designed a sensing system that combined the technologies of target DNA recycling amplification, magnetic separation, and in situ formation of fluorescent copper nanoclusters (CuNCs) for viral DNA analysis. In the presence of target viral DNA (tDNA), a large quantity of output DNA (oDNA) was produced from hairpin DNA (hDNA) through an exonuclease III-assisted target recycling amplification strategy. Magnetic beads (MBs) labeled with capture DNA (cDNA) were hybridized with oDNA, and the partially complementary oDNA served as a bridge that could link AT-rich dsDNA on the surface of MBs, which led to a decrease of AT-rich dsDNA in solution after magnetic separation. On account of the lack of AT-rich dsDNA as a template in solution, in situ formation of fluorescent CuNCs was blocked, which resulted in a decrease in the fluorescence intensity at 590 nm. Therefore, taking advantage of one-step magnetic separation and in situ formation of CuNCs, the target viral DNA was sensitively and specifically detected in a linear range from 5 pM to 5 nM with a detection limit of 1 pM. The MB-based platform was not only reusable but also achieved magnetic separation, which could eliminate interferences in complex samples. The assay combining the MB-based probe with fluorescent CuNCs provided a universal, label-free, and reusable platform for viral DNA detection.
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Affiliation(s)
- Junyang Chen
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Mengke Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ying Bao
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaolei Xie
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yixin Nie
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yuntai Lv
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xingguang Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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17
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Liu L, Zhang Q, Li F, Wang M, Sun J, Zhu S. Fluorescent DNA-templated silver nanoclusters for highly sensitive detection of D-penicillamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119584. [PMID: 33636492 DOI: 10.1016/j.saa.2021.119584] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Herein, fluorescent DNA-templated silver nanoclusters (DNA-AgNCs) with red emission were synthesized and utilized as novel probe to detect D-penicillamine (D-Pen) for the first time. D-Pen molecules contain a thiol which can combine with Ag to form a non-fluorescent ground state complex, inducing the aggregation of DNA-AgNCs followed by the fluorescence quenching. The quenching mechanism is well-studied and found to be a static quenching process. This method can detect D-Pen in the range of 0.025-0.7 μM with the detection limit as low as 8 nM, which is 1-3 orders of magnitude more sensitive than those based on other fluorescent nanoprobes. More importantly, the preparation procedure for DNA-AgNCs is fast and without the requirement of heavy metal ions. Thus, this detection strategy is time-saving and eco-friendly. Satisfactory recoveries have been acquired for monitoring D-Pen in human serum samples and pharmaceutical samples owing to the high sensitivity.
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Affiliation(s)
- Lingyuan Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Qianyi Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Feng Li
- Qingdao Special Service Men Recuperation Center of PLA Navy, Qingdao 266071, China
| | - Mei Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
| | - Jing Sun
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China
| | - Shuyun Zhu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China.
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18
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Liu L, Zhu S, Sun J, Xia M, Zhao X, Xu G. Ratiometric fluorescence detection of bleomycin based on proximity-dependent fluorescence conversion of DNA-templated silver nanoclusters. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.07.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Ma J, Niu H, Gu S. The spatial organization of trace silver atoms on a DNA template. RSC Adv 2020; 11:1153-1163. [PMID: 35423706 PMCID: PMC8693506 DOI: 10.1039/d0ra08066g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023] Open
Abstract
DNA with programmable information can be used to encode the spatial organization of silver atoms. Based on the primary structures of a DNA template containing a controllable base arrangement and number, the surrounding environment and cluster together can induce the folding of the DNA template into an appropriate secondary structure for forming AgNCs with different fluorescence emissions, such as i-motif, G-quadruplex, dimeric template, triplex, monomeric or dimeric C-loop, emitter pair, and G-enhancer/template conjugate. Stimuli can induce the dynamic structural transformation of the DNA template with a recognition site for favourably or unfavourably forming AgNCs, along with varied fluorescence intensities and colours. The array of several or more of the same and different clusters can be performed on simple and complex nanostructures, while maintaining their original properties. By sorting out this review, we systematically conclude the link between the performance of AgNCs and the secondary structure of the DNA template, and summarize the precise arrangement of nanoclusters on DNA nanotechnology. This clear review on the origin and controllability of AgNCs based on the secondary structure of the DNA template is beneficial for exploring the new probe and optical devices.
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Affiliation(s)
- Jinliang Ma
- College of Food and Bioengineering, Henan University of Science and Technology Luoyang Henan 471023 China
- Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University Shanghai 200127 China
| | - Huawei Niu
- College of Food and Bioengineering, Henan University of Science and Technology Luoyang Henan 471023 China
| | - Shaobin Gu
- College of Food and Bioengineering, Henan University of Science and Technology Luoyang Henan 471023 China
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20
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Kumar V, Guleria P. Application of DNA-Nanosensor for Environmental Monitoring: Recent Advances and Perspectives. CURRENT POLLUTION REPORTS 2020:1-21. [PMID: 33344145 PMCID: PMC7732738 DOI: 10.1007/s40726-020-00165-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/04/2020] [Indexed: 05/24/2023]
Abstract
PURPOSE OF REVIEW Environmental pollutants are threat to human beings. Pollutants can lead to human health and environment hazards. The purpose of this review is to summarize the work done on detection of environmental pollutants using DNA nanosensors and challenges in the areas that can be focused for safe environment. RECENT FINDINGS Most of the DNA-based nanosensors designed so far use DNA as recognition element. ssDNA, dsDNA, complementary mismatched DNA, aptamers, and G-quadruplex DNA are commonly used as probes in nanosensors. More and more DNA sequences are being designed that can specifically detect various pollutants even simultaneously in complex milk, wastewater, soil, blood, tap water, river, and pond water samples. The feasibility of direct detection, ease of designing, and analysis makes DNA nanosensors fit for future point-of-care applications. SUMMARY DNA nanosensors are easy to design and have good sensitivity. DNA component and nanomaterials can be designed in a controlled manner to detect various environmental pollutants. This review identifies the recent advances in DNA nanosensor designing and opportunities available to design nanosensors for unexplored pathogens, antibiotics, pesticides, GMO, heavy metals, and other toxic pollutant.
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Affiliation(s)
- Vineet Kumar
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University (LPU), Jalandhar – Delhi G.T. Road, Phagwara, Punjab 144411 India
| | - Praveen Guleria
- Department of Biotechnology, Faculty of Life Sciences, DAV University, Jalandhar, Punjab 144012 India
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21
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Yao Q, Wu Z, Liu Z, Lin Y, Yuan X, Xie J. Molecular reactivity of thiolate-protected noble metal nanoclusters: synthesis, self-assembly, and applications. Chem Sci 2020; 12:99-127. [PMID: 34163584 PMCID: PMC8178751 DOI: 10.1039/d0sc04620e] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 11/07/2020] [Indexed: 12/14/2022] Open
Abstract
Thiolate-protected noble metal (e.g., Au and Ag) nanoclusters (NCs) are ultra-small particles with a core size of less than 3 nm. Due to the strong quantum confinement effects and diverse atomic packing modes in this ultra-small size regime, noble metal NCs exhibit numerous molecule-like optical, magnetic, and electronic properties, making them an emerging family of "metallic molecules". Based on such molecule-like structures and properties, an individual noble metal NC behaves as a molecular entity in many chemical reactions, and exhibits structurally sensitive molecular reactivity to various ions, molecules, and other metal NCs. Although this molecular reactivity determines the application of NCs in various fields such as sensors, biomedicine, and catalysis, there is still a lack of systematic summary of the molecular interaction/reaction fundamentals of noble metal NCs at the molecular and atomic levels in the current literature. Here, we discuss the latest progress in understanding and exploiting the molecular interactions/reactions of noble metal NCs in their synthesis, self-assembly and application scenarios, based on the typical M(0)@M(i)-SR core-shell structure scheme, where M and SR are the metal atom and thiolate ligand, respectively. In particular, the continuous development of synthesis and characterization techniques has enabled noble metal NCs to be produced with molecular purity and atomically precise structural resolution. Such molecular purity and atomically precise structure, coupled with the great help of theoretical calculations, have revealed the active sites in various structural hierarchies of noble metal NCs (e.g., M(0) core, M-S interface, and SR ligand) for their molecular interactions/reactions. The anatomy of such molecular interactions/reactions of noble metal NCs in synthesis, self-assembly, and applications (e.g., sensors, biomedicine, and catalysis) constitutes another center of our discussion. The basis and practicality of the molecular interactions/reactions of noble metal NCs exemplified in this Review may increase the acceptance of metal NCs in various fields.
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Affiliation(s)
- Qiaofeng Yao
- Department of Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585
| | - Zhennan Wu
- Department of Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585
| | - Zhihe Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou China 350207
| | - Yingzheng Lin
- Department of Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou China 350207
| | - Xun Yuan
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao China 266042
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou China 350207
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22
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Fluorescent sensing of mercury (II) and copper (II) ions based on DNA-templated Cu/Ag nanoclusters. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105214] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Liu X, Zhang S, Xu H, Wang R, Dong L, Gao S, Tang B, Fang W, Hou F, Zhong L, Aldalbahi A. Nitrogen-Doped Carbon Quantum Dots from Poly(ethyleneimine) for Optical Dual-Mode Determination of Cu 2+ and l-Cysteine and Their Logic Gate Operation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47245-47255. [PMID: 32955238 DOI: 10.1021/acsami.0c12750] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, nitrogen-doped carbon quantum dots from poly(ethyleneimine) (PQDs) were synthesized by a low-cost and facile one-step hydrothermal method without other reagents. A quantum yield (QY) of up to 23.2% with maximum emission at 460 nm under an excitation wavelength of 340 nm was ascribed to the high nitrogen doping (20.59%). The PQDs selectively form a blue complex with Cu2+ accompanied by strong quenching of the fluorescence emission. Meanwhile, the PQD-Cu2+ complex exhibited selective fluorescence recovery and color disappearance on exposure to l-cysteine (Cys). The electron transfer from amino or oxygen groups on the PQDs to Cu2+ leads to fluorescence quenching, and a chromogenic reaction of the cuprammonium complex results in a color change. The strong affinity between Cys and Cu2+ causes the detachment of Cu2+ from the surface of PQDs, so the color of the solution disappears and the fluorescence of PQDs recovers. Under the optimized condition, the proposed sensor was applied to detect Cu2+ in the linear range of 0-280 μM. A detection limit of 4.75 μM is achieved using fluorescence spectroscopy and 4.74 μM by monitoring the absorbance variation at 272 nm. For Cys detection, the linear range of 0-800 μM with detection limits of 28.11 μM (fluorescence determination) and 19.74 μM (peak shift determination at 272 nm) was obtained. Meanwhile, the PQD-Cu2+ system exhibits distinguishable responses to other biothiols such as l-glutathione (GSH) and dl-homocysteine (Hcy). Based on the multimode signals, an "AND" logic gate was constructed successfully. Interestingly, besides Cu2+, Fe3+ can also quench the fluorescence of PQDs and the PQD-Fe3+ system exhibits superior selectivity for Cys detection. Most importantly, the proposed assay is not only simple, cheap, and stable but also suitable for detecting Cu2+ and Cys in some real samples.
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Affiliation(s)
- Xuerui Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Shengxiao Zhang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Hui Xu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Ruru Wang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Lina Dong
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Shanmin Gao
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Boyang Tang
- School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Weina Fang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai 200241, China
- Institute of Molecular Medicine, Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Faju Hou
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Linlin Zhong
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Ali Aldalbahi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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24
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Jabed MA, Dandu N, Tretiak S, Kilina S. Passivating Nucleobases Bring Charge Transfer Character to Optically Active Transitions in Small Silver Nanoclusters. J Phys Chem A 2020; 124:8931-8942. [PMID: 33079551 DOI: 10.1021/acs.jpca.0c06974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DNA-wrapped silver nanoclusters (DNA-AgNCs) are known for their efficient luminescence. However, their emission is highly sensitive to the DNA sequence, the cluster size, and its charge state. To get better insights into photophysics of these hybrid systems, simulations based on density functional theory (DFT) are performed. Our calculations elucidate the effect of the structural conformations, charges, solvent polarity, and passivating bases on optical spectra of DNA-AgNCs containing five and six Ag atoms. It is found that inclusion of water in calculations as a polar solvent media results in stabilization of nonplanar conformations of base-passivated clusters, while their planar conformations are more stable in vacuum, similar to the bare Ag5 and Ag6 clusters. Cytosines and guanines interact with the cluster twice stronger than thymines, due to their larger dipole moments. In addition to the base-cluster interactions, hydrogen bonds between bases notably contribute to the structure stabilization. While the relative intensity, line width, and the energy of absorption peaks are slightly changing depending on the cluster charge, conformations, and base types, the overall spectral shape with five well-resolved bands at 2.5-5.5 eV is consistent for all structures. Independent of the passivating bases and the cluster size and charge, the low energy optical transitions at 2.5-3.5 eV exhibit a metal to ligand charge transfer (MLCT) character with the main contribution emerging from Ag-core to the bases. Cytosines facilitate the MLCT character to a larger degree comparing to the other bases. However, the doublet transitions in clusters with the open shell electronic structure (Ag5 and Ag6+) result in appearance of additional red-shifted (<2.5 eV) and optically weak band with negligible MLCT character. The passivated clusters with the closed shell electronic structure (Ag5+ and Ag6) exhibit higher optical intensity of their lowest transitions with much higher MLCT contribution, thus having better potential for emission, than their open shell counterparts.
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Affiliation(s)
- Mohammed A Jabed
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Naveen Dandu
- Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Sergei Tretiak
- Center for Nonlinear Studies, Center for Integrated Nanotechnologies, and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Svetlana Kilina
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
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One-Pot, In-Situ Synthesis of 8-Armed Poly(Ethylene Glycol)-Coated Ag Nanoclusters as a Fluorescent Sensor for Selective Detection of Cu 2. BIOSENSORS-BASEL 2020; 10:bios10100131. [PMID: 32977585 PMCID: PMC7598169 DOI: 10.3390/bios10100131] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/14/2020] [Accepted: 09/21/2020] [Indexed: 12/21/2022]
Abstract
Fluorescent nanomaterials, such as quantum dots, have developed rapidly in recent years and have been significantly developed. Herein, we demonstrate a facile, one-pot, and in-situ synthesis strategy to obtain fluorescent silver nanoclusters (AgNCs) coated with eight-armed poly (ethylene glycol) polymers (8PEG-AgNCs) via a direct gel-mediated process. During the synthesis, ammonium (NH3) served as the crosslinker for the gel formation via a amine-type Michael addition reaction. This hydrogel can be used as a template to synthesize AgNCs using its volume-limiting effect. The in-situ generation of AgNCs takes place inside the nanocages of the formed gels, which guarantees the homogenous distribution of AgNCs in the gel matrix, as well as the efficient coating of PEG on the nanoclusters. After the degradation of gels, the released 8PEG-AgNCs nanohybrids showed strong blue fluorescence and exhibited long-term stability in aqueous solution for nearly one year. Results showed that the fabricated sensor revealed excellent fluorescent sensitivity for the selective detection of Cu2+ with a detection limit of 50 nM and a wide linear detection range of 5–100 μM. It is proposed that the greater cross-linking density leads to smaller gel pores and allows the synthesis of AgNCs with fluorescent properties. These results indicate that this novel hydrogel with certain biodegradation has the potential to be applied as a fluorescent sensor for catalytic synthesis, fluorescence tracing in cells, and fluorescence detection fields. Meanwhile, the novel design principle has a certain versatility to accelerate the development and application of other kinds of metal nanoclusters and quantum dots.
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26
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Peng W, Qin Y, Li W, Chen M, Zhou D, Li H, Cui J, Chang J, Xie S, Gong X, Tang B. Nonenzyme Cascaded Amplification Biosensor Based on Effective Aggregation Luminescence Caused by Disintegration of Silver Nanoparticles. ACS Sens 2020; 5:1912-1920. [PMID: 32575979 DOI: 10.1021/acssensors.9b02355] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Sensitive and portable quantification of biomarkers has particular significance in the monitoring and treatment of clinical diseases. Conventional immunoassays were accustomed to introducing or incorporating enzymes for signal amplification, which commonly suffered from poor stability and inferior tolerance. Herein, we constructed a novel nonenzyme amplification methodology based on fluorogenic Ag+-tetrazolate aggregation coupled with silver corrosion sensitization for biomarker determination. A significant cascade enhancement strategy was achieved by the valid aggregation luminescence caused by the potent disintegration of silver nanoparticles. Furthermore, efficient magnetic separation was also combined and performed for the rapidity and simplicity of operation. As the target, the detection limit of prostate-specific antigen was 15.66 pg/mL in our designed biosensor. Besides, a good linear relationship was obtained. The designed biosensor demonstrated good specificity and was successfully applied to clinical serum sample detection.
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Affiliation(s)
- Weipan Peng
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Yi Qin
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Wenna Li
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Minghui Chen
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Dianming Zhou
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin 30000, China
| | - Hengxuan Li
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Jingyu Cui
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Jin Chang
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Sheng Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410000, China
| | - Xiaoqun Gong
- School of Life Sciences and Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology (Tianjin), Tianjin University, Tianjin 300072, China
| | - Benzhong Tang
- Department of Chemistry, Department of Chemical and Biological Engineering, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study, Institute of Molecular Functional Materials, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
- Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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27
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Geczy R, Christensen NJ, Rasmussen KK, Kálomista I, Tiwari MK, Shah P, Yang SW, Bjerrum MJ, Thulstrup PW. Formation and Structure of Fluorescent Silver Nanoclusters at Interfacial Binding Sites Facilitating Oligomerization of DNA Hairpins. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Reka Geczy
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Niels Johan Christensen
- Department of Chemistry University of Copenhagen Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Kim K. Rasmussen
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Ildikó Kálomista
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Manish K. Tiwari
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Pratik Shah
- Department of Systems Biology Institute of Life Science and Biotechnology Yonsei University Seoul 03722 Korea
| | - Seong Wook Yang
- Department of Systems Biology Institute of Life Science and Biotechnology Yonsei University Seoul 03722 Korea
| | - Morten J. Bjerrum
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Peter W. Thulstrup
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
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28
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Geczy R, Christensen NJ, Rasmussen KK, Kálomista I, Tiwari MK, Shah P, Yang SW, Bjerrum MJ, Thulstrup PW. Formation and Structure of Fluorescent Silver Nanoclusters at Interfacial Binding Sites Facilitating Oligomerization of DNA Hairpins. Angew Chem Int Ed Engl 2020; 59:16091-16097. [DOI: 10.1002/anie.202005102] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/18/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Reka Geczy
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Niels Johan Christensen
- Department of Chemistry University of Copenhagen Thorvaldsensvej 40 1871 Frederiksberg Denmark
| | - Kim K. Rasmussen
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Ildikó Kálomista
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Manish K. Tiwari
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Pratik Shah
- Department of Systems Biology Institute of Life Science and Biotechnology Yonsei University Seoul 03722 Korea
| | - Seong Wook Yang
- Department of Systems Biology Institute of Life Science and Biotechnology Yonsei University Seoul 03722 Korea
| | - Morten J. Bjerrum
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
| | - Peter W. Thulstrup
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
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29
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Yourston LE, Krasnoslobodtsev AV. Micro RNA Sensing with Green Emitting Silver Nanoclusters. Molecules 2020; 25:E3026. [PMID: 32630693 PMCID: PMC7411700 DOI: 10.3390/molecules25133026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022] Open
Abstract
Micro RNA (miR) are regulatory non-coding RNA molecules, which contain a small number of nucleotides ~18-28 nt. There are many various miR sequences found in plants and animals that perform important functions in developmental, metabolic, and disease processes. miRs can bind to complementary sequences within mRNA molecules thus silencing mRNA. Other functions include cardiovascular and neural development, stem cell differentiation, apoptosis, and tumors. In tumors, some miRs can function as oncogenes, others as tumor suppressors. Levels of certain miR molecules reflect cellular events, both normal and pathological. Therefore, miR molecules can be used as biomarkers for disease diagnosis and prognosis. One of these promising molecules is miR-21, which can serve as a biomarker with high potential for early diagnosis of various types of cancer. Here, we present a novel design of miR detection and demonstrate its efficacy on miR-21. The design employs emissive properties of DNA-silver nanoclusters (DNA/AgNC). The detection probe is designed as a hairpin DNA structure with one side of the stem complimentary to miR molecule. The binding of target miR-21 opens the hairpin structure, dramatically modulating emissive properties of AgNC hosted by the C12 loop of the hairpin. "Red" fluorescence of the DNA/AgNC probe is diminished in the presence of the target miR. At the same time, "green" fluorescence is activated and its intensity increases several-fold. The increase in intensity of "green" fluorescence is strong enough to detect the presence of miR-21. The intensity change follows the concentration dependence of the target miR present in a sample, which provides the basis of developing a new, simple probe for miR detection. The detection strategy is specific, as demonstrated using the response of the DNA/AgNC probe towards the scrambled miR-21 sequence and miR-25 molecule. Additionally, the design reported here is very sensitive with an estimated detection limit at ~1 picomole of miR-21.
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Xie T, Zhong X, Liu Z, Xie C. Silica-anchored cadmium sulfide nanocrystals for the optical detection of copper(II). Mikrochim Acta 2020; 187:323. [PMID: 32394197 DOI: 10.1007/s00604-020-04295-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 04/23/2020] [Indexed: 12/17/2022]
Abstract
A fluorometric assay was developed for the determination of copper(II) ion based on its quenching effect on the green fluorescent probe of SiO2-anchored CdS nanocrystals (SiO2/CdS NCs). The fluorescent probe was prepared by a surface ion-directing strategy for homogeneous precipitation of CdS NCs onto the carboxyl-capped SiO2 core surfaces. In comparison to CdS NCs, the SiO2/CdS NCs has strong fluorescence emission and good photostability. Moreover, SiO2/CdS NCs show higher fluorescence selectivity for copper(II) ions than for other common metal ions because copper(II) ions have a strong fluorescence quenching effect on SiO2/CdS NCs. At excitation/emission wavelengths of 300/516 nm, the resulting fluorescent probe shows wide linear ranges from 0.01 to 2 μM with a detection limit of 6.3 nM for copper(II) ions. The method has been applied to the determination of trace copper(II) ions in tea infusions with satisfactory results. Graphical abstract.
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Affiliation(s)
- Tao Xie
- Institute of Physical Science and Information Technology, School of Chemical and Chemical Engineering, School of Life Science, Anhui University, Hefei, 230601, Anhui, China
| | - Xufeng Zhong
- Key Laboratory of Biomimetic Sensor and Detecting Technology of Anhui Province, School of Materials and Chemical Engineering, West Anhui University, Lu'an, 237012, Anhui, China
| | - Zhengjie Liu
- Institute of Physical Science and Information Technology, School of Chemical and Chemical Engineering, School of Life Science, Anhui University, Hefei, 230601, Anhui, China
| | - Chenggen Xie
- Institute of Physical Science and Information Technology, School of Chemical and Chemical Engineering, School of Life Science, Anhui University, Hefei, 230601, Anhui, China. .,Key Laboratory of Biomimetic Sensor and Detecting Technology of Anhui Province, School of Materials and Chemical Engineering, West Anhui University, Lu'an, 237012, Anhui, China.
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31
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Du Z, Wei C. Using G‐Rich Sequence to Enhance the Peroxidase‐Mimicking Activity of DNA‐Cu/Ag Nanoclusters for Rapid Colorimetric Detection of Hydrogen Peroxide and Glucose. ChemistrySelect 2020. [DOI: 10.1002/slct.202000956] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zhiwei Du
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of EducationInstitute of Molecular ScienceShanxi University Taiyuan 030006 P. R. China
| | - Chunying Wei
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of EducationInstitute of Molecular ScienceShanxi University Taiyuan 030006 P. R. China
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32
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Zhang B, Wei C. The sensitive detection of ATP and ADA based on turn-on fluorescent copper/silver nanoclusters. Anal Bioanal Chem 2020; 412:2529-2536. [PMID: 32043202 DOI: 10.1007/s00216-020-02476-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/27/2020] [Accepted: 01/31/2020] [Indexed: 11/25/2022]
Abstract
A simple turn-on fluorescence strategy is proposed for the detection of ATP based on DNA-stabilized copper/silver nanoclusters (DNA-Cu/Ag NCs). The fluorescence intensity of DNA-Cu/Ag NCs increases significantly in the presence of ATP, because the specific interaction between ATP and its aptamer causes two darkish Cu/Ag NCs to be situated at the 5' and 3' termini close to each other. A limit of detection (LOD) of 7.0 μM is found, in a linear range of 2-18 mM, and the proposed sensor is simple, sensitive, and selective. Additionally, the DNA-Cu/Ag NCs/ATP system is further developed into a sensor for ADA detection and demonstrates a linear response to ADA from 5 to 50 U/L with a LOD of 5 U/L. The proposed method is also shown to be successful in detecting ATP and ADA in a solution of fetal bovine serum.
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Affiliation(s)
- Baozhu Zhang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, 030006, Shanxi, China
- College of Chemistry and Chemical Engineering, Jinzhong University, Yuci, 030619, Shanxi, China
| | - Chunying Wei
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, 030006, Shanxi, China.
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Zhang B, Wei C. An aptasensor for the label-free detection of thrombin based on turn-on fluorescent DNA-templated Cu/Ag nanoclusters. RSC Adv 2020; 10:35374-35380. [PMID: 35515676 PMCID: PMC9056932 DOI: 10.1039/d0ra04609d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 09/09/2020] [Indexed: 11/21/2022] Open
Abstract
A highly sensitive thrombin aptasensor was constructed based on the alteration of the aptamer conformation induced by the target recognition and the turn-on fluorescence due to the proximity of two darkish DNA-templated copper/silver nanoclusters (DNA-Cu/Ag NCs). Two DNA templates were designed as the functional structures consisting of the Cu/Ag NC-nucleation segment located at two termini or one terminus and the aptamer segment in the middle of a DNA template. Two darkish DNA-Cu/Ag NCs came close to each other when the aptamer combined with the target due to the conformational alteration of the aptamer structure, resulting in an increased fluorescence signal readout. Thrombin was sensitively determined as low as 1.6 nM in the range of 1.6–8.0 nM with a high selectivity. Finally, this sensor succeeded in detecting thrombin in a real fetal bovine serum. A highly sensitive thrombin aptasensor was constructed based on the alteration of the aptamer conformation induced by the target recognition and the turn-on fluorescence due to the proximity of two darkish DNA-templated copper/silver nanoclusters (DNA-Cu/Ag NCs).![]()
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Affiliation(s)
- Baozhu Zhang
- College of Chemistry and Chemical Engineering
- Jinzhong University
- P. R. China
| | - Chunying Wei
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- P. R. China
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Tsai TT, Chen CA, Yi-Ju Ho N, Yang S, Chen CF. Fluorescent Double-Stranded DNA-Templated Copper Nanoprobes for Rapid Diagnosis of Tuberculosis. ACS Sens 2019; 4:2885-2892. [PMID: 31576745 DOI: 10.1021/acssensors.9b01163] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this work, we investigate highly sensitive fluorescent Cu nanoparticles for use as rapid and specific nucleic acid amplification nanoprobes (NPs) for the diagnosis of tuberculosis. After applying polymerase chain reaction (PCR) to a tuberculosis (TB) sample, we demonstrate that the presence of the targeted IS6110 DNA sequence of TB can be easily and directly detected through the in situ formation of DNA-templated fluorescent Cu NPs and subsequently quantified using only a smartphone. Compared to traditional DNA analysis, this sensing platform does not require purification steps and eliminates the need for electrophoresis to confirm the PCR results. After optimization, this dsDNA-Cu NP-PCR method has the ability to analyze clinical TB nucleic acid samples at a detection limit of 5 fg/μL, and the fluorescent signal can be distinguished in only ∼3 min after the DNA has been amplified. Moreover, with the combination of smartphone-assisted imaging analysis, we can further reduce the instrument size/cost and enhance the portability. In this manner, we are able to eliminate the need for a fluorescent spectrophotometer to measure the clinical sample. These results demonstrate this platform's practical applicability, combining a smartphone and on-site analysis while retaining the detection performance, making it suitable for clinical DNA applications in resource-limited regions of the world.
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Affiliation(s)
- Tsung-Ting Tsai
- Department of Orthopaedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan 333, Taiwan
| | - Chung-An Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan
| | - Natalie Yi-Ju Ho
- Department of Orthopaedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan 333, Taiwan
| | - Shuan Yang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chien-Fu Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan
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Song C, Xu J, Chen Y, Zhang L, Lu Y, Qing Z. DNA-Templated Fluorescent Nanoclusters for Metal Ions Detection. Molecules 2019; 24:E4189. [PMID: 31752270 PMCID: PMC6891495 DOI: 10.3390/molecules24224189] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/09/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023] Open
Abstract
DNA-templated fluorescent nanoclusters (NCs) have attracted increasing research interest on account of their prominent features, such as DNA sequence-dependent fluorescence, easy functionalization, wide availability, water solubility, and excellent biocompatibility. Coupling DNA templates with complementary DNA, aptamers, G-quadruplex, and so on has generated a large number of sensors. Additionally, the preparation and applications of DNA-templated fluorescent NCs in these sensing have been widely studied. This review firstly focuses on the properties of DNA-templated fluorescent NCs, and the synthesis of DNA-templated fluorescent NCs with different metals is then discussed. In the third part, we mainly introduce the applications of DNA-templated fluorescent NCs for sensing metal ions. At last, we further discuss the future perspectives of DNA-templated fluorescent NCs in the synthesis and sensing metal ions in the environmental and biological fields.
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Affiliation(s)
- Chunxia Song
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China; (C.S.); (Y.C.); (L.Z.); (Y.L.)
| | - Jingyuan Xu
- 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, China;
| | - Ying Chen
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China; (C.S.); (Y.C.); (L.Z.); (Y.L.)
| | - Liangliang Zhang
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China; (C.S.); (Y.C.); (L.Z.); (Y.L.)
| | - Ying Lu
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China; (C.S.); (Y.C.); (L.Z.); (Y.L.)
| | - Zhihe Qing
- 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, China;
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36
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El‐ajaily MM, Sarangi AK, Mohapatra RK, Hassan SS, Eldaghare RN, Mohapatra PK, Raval MK, Das D, Mahal A, Cipurkovic A, Al‐Noor TH. Transition Metal Complexes of (E)‐2((2‐hydroxybenzylidene) amino‐3‐mercaptopropanoic acid: XRD, Anticancer, Molecular modeling and Molecular Docking Studies. ChemistrySelect 2019. [DOI: 10.1002/slct.201902306] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marei M. El‐ajaily
- Chemistry DepartmentFaculty of ScienceBenghazi University Benghazi Libya
| | - Ashish K. Sarangi
- Department of ChemistryGovernment College of Engineering, Keonjhar Odisha India
| | - Ranjan K. Mohapatra
- Department of ChemistryGovernment College of Engineering, Keonjhar Odisha India
| | - Saffa S. Hassan
- Chemistry departmentFaculty of ScienceCairo University Giza Egypt
| | - Rehab N. Eldaghare
- Chemistry DepartmentFaculty of ScienceBenghazi University Benghazi Libya
| | - Pranab K. Mohapatra
- Department of ChemistryC. V. Raman College of Engineering, Bhubaneswar Odisha India
| | - Mukesh K. Raval
- PG Department of ChemistryG. M. University, Sambalpur Odisha India
| | - Debadutta Das
- Department of ChemistrySukanti Degree College, Subarnapur Odisha India
| | - Ahmed Mahal
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization and Guangdong Provincial KeyLaboratory of Applied BotanySouth China Botanical GardenChinese Academy of Sciences, Guangzhou People's Republic of China
- Guangzhou HC Pharmaceutical Co., Ltd Guangzhou People's Republic of China
| | - Amira Cipurkovic
- Department of ChemistryUniversity of Tuzla Tuzla Bosnia and Herzegovina
| | - Taghreed H. Al‐Noor
- Chemistry DepartmentIbn-Al-Haithem College of Education for Pure ScienceBaghdad University Baghdad Iraq
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37
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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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38
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A ratiometric fluorescent nanoprobe consisting of ssDNA-templated silver nanoclusters for detection of histidine/cysteine, and the construction of combinatorial logic circuits. Mikrochim Acta 2019; 186:648. [DOI: 10.1007/s00604-019-3749-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/10/2019] [Indexed: 02/06/2023]
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39
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Aloisi A, Della Torre A, De Benedetto A, Rinaldi R. Bio-Recognition in Spectroscopy-Based Biosensors for *Heavy Metals-Water and Waterborne Contamination Analysis. BIOSENSORS 2019; 9:E96. [PMID: 31366137 PMCID: PMC6784378 DOI: 10.3390/bios9030096] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/23/2019] [Accepted: 07/25/2019] [Indexed: 02/07/2023]
Abstract
: Microsystems and biomolecules integration as well multiplexing determinations are key aspects of sensing devices in the field of heavy metal contamination monitoring. The present review collects the most relevant information about optical biosensors development in the last decade. Focus is put on analytical characteristics and applications that are dependent on: (i) Signal transduction method (luminescence, colorimetry, evanescent wave (EW), surface-enhanced Raman spectroscopy (SERS), Förster resonance energy transfer (FRET), surface plasmon resonance (SPR)); (ii) biorecognition molecules employed (proteins, nucleic acids, aptamers, and enzymes). The biosensing systems applied (or applicable) to water and milk samples will be considered for a comparative analysis, with an emphasis on water as the primary source of possible contamination along the food chain.
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Affiliation(s)
- Alessandra Aloisi
- Institute for Microelectronics and Microsystems (IMM), CNR, Via Monteroni, 73100 Lecce, Italy
| | - Antonio Della Torre
- Institute for Microelectronics and Microsystems (IMM), CNR, Via Monteroni, 73100 Lecce, Italy
| | - Angelantonio De Benedetto
- Mathematics and Physics "E. De Giorgi" Department, University of Salento, Via Monteroni, 73100 Lecce, Italy
| | - Rosaria Rinaldi
- Institute for Microelectronics and Microsystems (IMM), CNR, Via Monteroni, 73100 Lecce, Italy.
- Mathematics and Physics "E. De Giorgi" Department, University of Salento, Via Monteroni, 73100 Lecce, Italy.
- ISUFI, University of Salento, Via Monteroni, 73100 Lecce, Italy.
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40
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Cytosine-rich ssDNA-templated fluorescent silver and copper/silver nanoclusters: optical properties and sensitive detection for mercury(II). Mikrochim Acta 2019; 186:541. [PMID: 31317329 DOI: 10.1007/s00604-019-3658-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/02/2019] [Indexed: 12/21/2022]
Abstract
DNA-templated silver nanoclusters (DNA-Ag NCs) with cytosine (C)-rich sequences (four or more segments of consecutive (2-5) C-bases) were synthesized. They display green and/or orange/red emissions under different excitation wavelengths. There is indication that more consecutive C-bases lead to longer emission wavelengths. The ratio of the red and green emissions of the DNA-Ag NCs depends on whether the NCs were synthesized under acidic or basic conditions. We also prepared the DNA copper/silver nanoclusters (DNA-Cu/Ag NCs) which can be synthesized in shorter time and display higher stability. The DNA-Cu/Ag NCs, under 470 nm photoexcitation, always display green emission, with a peak at 550 nm, irrespective of whether being prepared under acidic or basic conditions. The fluorescence of the Cu/Ag NCs is selectively quenched by Hg(II) ions which can be quantified by this nanoprobe with a detection limit as low as 2.4 nM. The quenching mechanism was studied by Stern-Volmer plots and lifetime studies which revealed that both static and dynamic quenching are operative. Graphical abstract Schematic presentation of fluorescent DNA-Ag nanoclusters (NCs) exhibiting red and green emission under different pH values, and green emissive DNA-Cu/Ag NCs for sensitive and rapid detection of Hg2+.
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Chen C, Chen S, Shiddiky MJA, Chen C, Wu KC. DNA‐Templated Copper Nanoprobes: Overview, Feature, Application, and Current Development in Detection Technologies. CHEM REC 2019; 20:174-186. [DOI: 10.1002/tcr.201900022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/22/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Chung‐An Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Shih‐Chia Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Muhammad J. A. Shiddiky
- School of Environment and Science & Queensland Micro- and Nanotechnology CentreNathan campus, Griffith University 170 Kessels Road QLD 4111 Australia
| | - Chien‐Fu Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Kevin C.‐W. Wu
- Department of Chemical EngineeringNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
- Division of Medical Engineering Research, National Health
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Ding L, Zhao Z, Li D, Wang X, Chen J. An "off-on" fluorescent sensor for copper ion using graphene quantum dots based on oxidation of l-cysteine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:320-325. [PMID: 30798213 DOI: 10.1016/j.saa.2019.02.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/25/2018] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
A simple and highly efficient "off-on" fluorescent sensor based on grapheme quantum dots (GQDs) for Cu2+ was developed. In this sensing platform, the fluorescence of GQDs was quenched in the presence of 2,4-dinitrophenylcysteine (DNPC), which is the reaction product of 1-chloro-2,4-dinitrobenzene (CDNB) and l-cysteine, owing to the spectral overlap between the absorption of DNPC and the excitation of GQDs. In the presence of Cu2+, l-cysteine was catalytically oxidized to l-cystine by O2, resulting in the reduction of DNPC. Thus, the fluorescence of GQDs was recovery. Based on this, the fluorescent detection of Cu2+ could be achieved. The proposed sensing strategy offered a selective identification of Cu2+ with a detection limit of 4.5 nM. Additionally, the practical application of this assay for Cu2+ determination in real water samples was also demonstrated.
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Affiliation(s)
- Longhua Ding
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, PR China.
| | - Zhongyao Zhao
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Dongjun Li
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Xue Wang
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Jialin Chen
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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Zhang M, Gao G, Ding Y, Deng C, Xiang J, Wu H. A fluorescent aptasensor for the femtomolar detection of epidermal growth factor receptor-2 based on the proximity of G-rich sequences to Ag nanoclusters. Talanta 2019; 199:238-243. [PMID: 30952252 DOI: 10.1016/j.talanta.2019.02.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/27/2019] [Accepted: 02/03/2019] [Indexed: 10/27/2022]
Abstract
Human epidermal growth factor receptor-2 (HER2) has been recognized as an important biomarker for the early diagnosis and management of breast cancer. However, there is still challenge in the clinical detection of HER2. In this work, a simple strategy for "turn on" fluorescent detection of HER2 with ultra-sensitivity and high specificity was developed. Herein, HER2-binding aptamer (HApt) and DNA2 containing G-rich sequences, templated sequences for Ag nanoclusters (AgNCs), and complementary bases at both ends were involved to achieve the double stranded DNA templated AgNCs (dsDNA-AgNCs) as a fluorescence probe for HER2 detection. In the presence of HER2, the highly specific binding of HER2 to HApt caused HApt separating from dsDNA-AgNCs, resulting in the folding of DNA2-AgNCs because of the complementary bases at both ends, which led to AgNCs' proximity to G-rich sequences, and therefore the enhanced fluorescence intensity. By monitoring the change in fluorescence signal (ΔF), HER2 was measured, and a linear range from 8.5 fM to 225 fM with a limit of detection (LOD) 0.0904 fM was obtained. More significantly, the detection of HER2 in serum samples was achieved with high accuracy, and the breast cancer patients were successfully discriminated from healthy persons. In summary, this strategy is simple, time-saving, cost-effective, ultrasensitive, specific, universal and more applicable for the detection of HER2. Therefore, we expect this present aptasensor can be used in the clinical detection of biomakers, which lays a potential foundation for the early diagnosis of cancer.
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Affiliation(s)
- Manman Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Ge Gao
- Department of Geratology, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Yalin Ding
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Chunyan Deng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Juan Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Huiyun Wu
- Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China.
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Xu Y, Hou Y, Wang Y, Wang Y, Li T, Song C, Wei N, Wang Q. Sensitive and selective detection of Cu 2+ ions based on fluorescent Ag nanoparticles synthesized by R-phycoerythrin from marine algae Porphyra yezoensis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 168:356-362. [PMID: 30391840 DOI: 10.1016/j.ecoenv.2018.10.102] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 10/01/2018] [Accepted: 10/28/2018] [Indexed: 06/08/2023]
Abstract
In this study, using a natural and green protein R-phycoerythrin (R-PE) extracted from marine Porphyra yezoensis as the stabilizer and reducer, silver nanoparticles (AgNPs) were synthesized. Based on this, a highly sensitive and selective method for the detection of Cu2+ ions was developed using R-PE-AgNPs as fluorescent probe. The interactions between R-PE-AgNPs and Cu2+ ions were systematically characterized by fluorescence spectroscopy, transmission electron microscopy (TEM), elemental mapping and Fourier transform infrared (FTIR). It was found that Cu2+ ions could cause aggregation of the R-PE-AgNPs, accompanied by the greatly increased particle size. Importantly, the method offered a wide linear detection range from 0 μM to 100.0 μM with a detection limit of 0.0190 μM. Moreover, the proposed method was successfully applied to analyze Cu2+ ions in tap water and lake water samples, acquiring satisfactory recovery between 91.6% and 102.2%. Such a green, fast and cost-effective fluorimetric method of the R-PE-AgNPs probe has great potential for tracing Cu2+ ions in diverse aqueous media.
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Affiliation(s)
- Yifeng Xu
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Yanhua Hou
- School of Marine and Technology, Harbin Institute of Technology, Weihai 264209, PR China
| | - Yatong Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Yifan Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Tong Li
- School of Marine and Technology, Harbin Institute of Technology, Weihai 264209, PR China
| | - Chi Song
- School of Marine and Technology, Harbin Institute of Technology, Weihai 264209, PR China
| | - Nana Wei
- School of Marine and Technology, Harbin Institute of Technology, Weihai 264209, PR China
| | - Quanfu Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; School of Marine and Technology, Harbin Institute of Technology, Weihai 264209, PR China.
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Chen W, Kong S, Wang J, Du L, Cai W, Wu C. Enhanced fluorescent effect of graphitic C 3N 4@ZIF-8 nanocomposite contribute to its improved sensing capabilities. RSC Adv 2019; 9:3734-3739. [PMID: 35518080 PMCID: PMC9060538 DOI: 10.1039/c8ra10330e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 01/21/2019] [Indexed: 11/21/2022] Open
Abstract
A novel graphitic carbon nitride (g-C3N4)@ZIF-8 nanocomposite was synthesized by a facile approach and applied as a fluorescent sensor. The fluorescent quenching and enhancing effect of g-C3N4@ZIF-8 nanocomposite was explored for potential applications in sensing metal ions and solvents based on photoluminescence (PL) measurements. Compared with g-C3N4 nanosheets alone, the combined g-C3N4@ZIF-8 nanostructure greatly improved the sensitivity for the detection of metal ions due to the special fluorescent quenching effect. In particular, the sensitivities of the detection of Cu2+ and Ag+ improve from 29.1 to 11.2 ppm and from 40 to 16.5 ppm, respectively, which were significantly improved compared to that of g-C3N4 nanosheets alone. The sensitivity could increase about 100% and 250% for Cu2+ and Ag+ by the g-C3N4@ZIF-8. The limit of detection (LOD) for Cu2+ and Ag+ by g-C3N4@ZIF-8 was 11.2 ppm and 13.2 ppm, respectively. Both g-C3N4 nanosheets and g-C3N4@ZIF-8 nanocomposite can be used for distinguishing Fe2+ and Fe3+ in solutions. The LOD of Fe2+ by g-C3N4@ZIF-8 was as low as 65.4 ppm. On the other hand, the relative increased luminescence of g-C3N4@ZIF-8 to the g-C3N4 in tetrahydrofuran (THF) was selective, which was successfully applied for detecting this specific solvent. An excellent linear relationship (0-1.0 v/v of THF/water) between the THF fraction and PL intensities was obtained. These results demonstrate that the g-C3N4@ZIF-8 nanocomposite provide a convenient and novel approach for the enhance fluorescence detection of metal ions and distinguishing of specific solvents.
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Affiliation(s)
- Wei Chen
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
| | - Shu Kong
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
| | - Jian Wang
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
| | - Liping Du
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
| | - Wen Cai
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
| | - Chunsheng Wu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University Xi'an 710061 China +86-29-82657763 +86-29-82657763
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Wang J, Xu X, Qiu X, Zhang S, Peng Y. Yolk–shell structured Au@Ag@mSiO2 as a probe for sensing cysteine enantiomers and Cu2+ based on circular dichroism. Analyst 2019; 144:7489-7497. [DOI: 10.1039/c9an01541h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel yolk–shell structured Au@Ag@mSiO2 was fabricated and used as a probe for recognition and quantification of cysteine enantiomers and Cu2+.
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Affiliation(s)
- Jing Wang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Xu Xu
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Xiaolin Qiu
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Shuaishuai Zhang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Yinxian Peng
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
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A Turn-On Detection of DNA Sequences by Means of Fluorescence of DNA-Templated Silver Nanoclusters via Unique Interactions of a Hydrated Ionic Liquid. Molecules 2018; 23:molecules23112889. [PMID: 30404141 PMCID: PMC6278258 DOI: 10.3390/molecules23112889] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/01/2018] [Accepted: 11/04/2018] [Indexed: 02/02/2023] Open
Abstract
Nucleic acid stability and structure, which are crucial to the properties of fluorescent DNA-templated silver nanoclusters (DNA-Ag NCs), significantly change in ionic liquids. In this work, our purpose was to study DNA-Ag NCs in a buffer containing the hydrated ionic liquid of choline dihydrogen phosphate (choline dhp) to improve fluorescence for application in DNA detection. Due to the stabilisation of an i-motif structure by the choline cation, a unique fluorescence emission—that was not seen in an aqueous buffer—was observed in choline dhp and remained stable for more than 30 days. A DNA-Ag NCs probe was designed to have greater fluorescence intensity in choline dhp in the presence of a target DNA. A turn-on sensing platform in choline dhp was built for the detection of the BRCA1 gene, which is related to familial breast and ovarian cancers. This platform showed better sensitivity and selectivity in distinguishing a target sequence from a mutant sequence in choline dhp than in the aqueous buffer. Our study provides new evidence regarding the effects of structure on properties of fluorescent DNA-Ag NCs and expands the applications of fluorescent DNA-Ag NCs in an ionic liquid because of improved sensitivity and selectivity.
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Kongor A, Panchal M, Athar M, Jha PC, Jhala D, Sindhav G, Shah N, Jain VK. Selective fluorescence sensing of Cu(II) ions using calix[4]pyrrole fabricated Ag nanoparticles: A spectroscopic and computational approach. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Wang WX, Cheung YW, Dirkzwager RM, Wong WC, Tanner JA, Li HW, Wu Y. Specific and sensitive detection of Plasmodium falciparum lactate dehydrogenase by DNA-scaffolded silver nanoclusters combined with an aptamer. Analyst 2018; 142:800-807. [PMID: 28139780 DOI: 10.1039/c6an02417c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Innovative nanomaterials offer significant potential for diagnosis of severe diseases of the developing world such as malaria. Small sized silver nanoclusters have shown promise for diagnostics due to their intense fluorescence emission and photo-stabilities. Here, double-stranded DNA-scaffolded silver nanoclusters (AgNCs-dsDNA) were prepared to detect the established malaria biomarker, Plasmodium falciparum lactate dehydrogenase (PfLDH). Significant luminescence enhancement over a wide concentration range of PfLDH was demonstrated. In addition, a low limit of detection at 0.20 nM (7.4 pg μL-1) was achieved for PfLDH in buffer solution, sensitive enough for practical use correlating with the clinical level of PfLDH in plasma from malaria-infected patients. Unique specificity was observed towards Plasmodium falciparum over Plasmodium vivax and human lactate dehydrogenase, as well as other non-specific proteins, by combining the use of AgNCs-dsDNA with a DNA aptamer against PfLDH. Moreover, the intrinsic mechanism was revealed in detail for the two-step luminescence response. The combination of DNA-scaffolded silver nanoclusters coupled to a selective single-stranded DNA aptamer allows for a highly specific and sensitive detection of PfLDH with significant promise for malaria diagnosis in future.
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Affiliation(s)
- Wei-Xian Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China.
| | - Yee-Wai Cheung
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong S. A. R., China
| | - Roderick M Dirkzwager
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong S. A. R., China
| | - Wai-Chung Wong
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong S. A. R., China
| | - Julian A Tanner
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong S. A. R., China
| | - Hong-Wei Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China.
| | - Yuqing Wu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China.
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50
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Functional ZnS:Mn(II) quantum dot modified with L-cysteine and 6-mercaptonicotinic acid as a fluorometric probe for copper(II). Mikrochim Acta 2018; 185:420. [DOI: 10.1007/s00604-018-2952-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/03/2018] [Indexed: 12/16/2022]
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