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Zhang R, Gao Y, Wang S, Pan J, Geng S, Li Z, Zhang K, Meng W. Detection of miRNA-378based on a catalytic hairpin self-assembly reaction combined with gold nanoparticle colorimetry. NANOTECHNOLOGY 2024; 35:355602. [PMID: 38821044 DOI: 10.1088/1361-6528/ad5297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 05/31/2024] [Indexed: 06/02/2024]
Abstract
Recent studies have shown that abnormalmiRNA-378expression is a rule, rather than an exception, in cervical cancer and can be used as a diagnostic and prognostic biomarker to assess tumor initiation. In this study, we developed a general, sensitive strategy for detectingmiRNA-378using catalytic hairpin self-assembly (CHA) combined with gold nanoparticles (AuNP) colorimetry. The presence ofmiRNA-378triggers the repeated self-assembly of two designed hairpin DNAs (H1 and H2) into dsDNA polymers, which leads to changes in the surface plasmon resonance absorption band and the macroscopic color of the AuNP colloids due to the formation of nanoparticle-DNA conjugates. This experimental phenomenon can be observed by ultraviolet-visible spectrometry or even with the naked eye. Using this method,miRNA-378could be quantitatively detected at the picomolar level (as low as 20.7 pM). Compared with traditional methods, such as quantitative polymerase chain reaction and RNA blotting, this strategy has a simple operation, low cost, and high sensitivity and selectivity, and thus, exhibits significant potential for miRNA detection.
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Affiliation(s)
- Run Zhang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Yahui Gao
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Shan Wang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Jinru Pan
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Shuang Geng
- NO. 3 Middle School of Cangzhou, No. 126, Gongnong Road, Xinhua District, Cangzhou 061000, People's Republic of China
| | - Zhen Li
- Tongji Hospital Tongji Medical College of Hust, No. 501, Gaoxin Avenue, East Lake New Technology Development Zone, Wuhan 430030, People's Republic of China
| | - Kejie Zhang
- School of Materials Science and Engineering, Nanjing Institute of Technology, No. 1, Hongjing Road, Jiangning District, Nanjing 211167, People's Republic of China
| | - Wei Meng
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, Nanjing 211198, People's Republic of China
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2
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Liu X, Zhang Z, Tomczak N, Yang C, Li C, Liu R, Yan B. A bioinspired silica nanocomposite for enhanced multidrug-resistant bacteria treatment and wash-free imaging. NANOSCALE ADVANCES 2023; 5:1631-1635. [PMID: 36926559 PMCID: PMC10012876 DOI: 10.1039/d2na00951j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Bacterial infections have posed significant threats to public health due to the emergence of antibiotic resistance. In this work, a novel antibacterial composite nanomaterial based on spiky mesoporous silica spheres loaded with poly(ionic liquid)s and aggregation-induced emission luminogens (AIEgens) was designed for efficient multidrug-resistant (MDR) bacteria treatment and imaging. The nanocomposite exhibited excellent and long-term antibacterial activity towards both Gram-negative and Gram-positive bacteria. Meanwhile, fluorescent AIEgens facilitate real-time bacterial imaging. Our study provides a multifunctional platform and a promising alternative to antibiotics for combating pathogenic MDR bacteria.
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Affiliation(s)
- Xiaokun Liu
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
- Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519000 China
| | - Zhiying Zhang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
| | - Nikodem Tomczak
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 2 Fusionopolis Way, Innovis #08-03 Singapore 138634 Republic of Singapore
| | - Cong Yang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
| | - Chengjun Li
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
| | - Rongrong Liu
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
| | - Bing Yan
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University Guangzhou 510006 China
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Qiao L, Lang W, Sun C, Huang Y, Wu P, Cai C, Xing B. Near Infrared-II Photothermal and Colorimetric Synergistic Sensing for Intelligent Onsite Dietary Myrosinase Profiling. Anal Chem 2023; 95:3856-3863. [PMID: 36756955 DOI: 10.1021/acs.analchem.2c05474] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Myrosinase (Myr) is a type of critical β-thioglucosidase enzyme activator essential for sustaining many functional foods to perform their health-promoting functions. An accurate and reliable Myr test is meaningful for food quality and dietary nutrition assessments, whereas the currently reported methods do not guarantee specificity and have high reliance on instrumentation, which are not suitable for rapid and onsite Myr screening especially in complex systems from various sources. Herein, we present a unique NIR-II absorption-based photothermal-responsive colorimetric biosensor for anti-interference onsite Myr determination and realization of rapid visualized outputs with the aid of smartphone calculation. Typically, assisted by glucose oxidase (GOx), Myr specifically converts the sinigrin substrate into hydrogen peroxide (H2O2) that can oxidize 3,3',5,5'-tetramethylbenzidine (TMB) catalyzed by AuNPs to form a charge transfer complex (CTC) with NIR-II absorption and photothermal characters. Delightfully, such a proposed method is able to determine Myr within a wide range of 0 to 172.5 mU/mL with a detection limit down to 2.96 mU/mL. Moreover, simple, rapid, and real-time visual Myr identification in actual food-sourced samples could also be readily achieved by smartphone readout processing, with the promising advantages of anti-interference, high accuracy, and low cost as well as labor-saving and intelligence engagement, thus providing great feasibility for precise measurement in complex and dynamic dietary sample analysis. Overall, our proposed method presents a novel technology for onsite dietary Myr enzyme profiling, which is promising to be applied in the food industry for nutritional composition profiles, freshness evaluation, and quality assessment.
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Affiliation(s)
- Ling Qiao
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Wenchao Lang
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Caixia Sun
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Yining Huang
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Ping Wu
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Chenxin Cai
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, P. R. China
| | - Bengang Xing
- School of Chemistry, Chemical Engineering & Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
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4
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Rapid, direct, visualized and antibody-free bacterial detection with extra species identification and susceptibility evaluation capabilities. Biosens Bioelectron 2022; 221:114902. [DOI: 10.1016/j.bios.2022.114902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/26/2022] [Accepted: 11/07/2022] [Indexed: 11/14/2022]
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Xu Y, Chen H, Xu S, Liu J, Chen Y, Gui L, Li H, Li R, Yuan Z, Li B. β-Lactamase-Responsive Probe for Efficient Photodynamic Therapy of Drug-Resistant Bacterial Infection. ACS Sens 2022; 7:1361-1371. [PMID: 35442628 DOI: 10.1021/acssensors.1c02485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several photosensitizers have recently been proposed as novel approaches against β-lactamase-producing drug-resistant bacteria. However, these reported photosensitizers are rarely used for accurate recognition of drug-resistant bacteria. To tackle this challenge, the structurally modified photosensitizer CySG-2 based on a lipophilic cationic heptamethine indocyanine near-infrared (NIR) dye (IR-780) and an important synthesis intermediate of cephalosporin antibiotic (GCLE) not only achieved the accurate recognition of TEM-1 methicillin-resistant Staphylococcus aureus (MRSA) successfully but also achieved antimicrobial photodynamic therapy (aPDT) in animal models infected by drug-resistant bacteria. Accurate enzyme recognition and efficient photodynamic therapy capabilities allow CySG-2 to achieve one stone with two birds. In addition, CySG-2 could also promote the eradication of internalized MRSA by facilitating the autophagy process, which is synergistic with its capacity of inducing reactive oxygen species generation under NIR laser irradiation for aPDT. Collectively, it is an effective multifunctional photosensitizer with the potential ability to guide the optimal use of different antibiotics and apply them in clinical treatment.
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Affiliation(s)
- Yue Xu
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang 550004, China
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | - Haiyan Chen
- Cancer Systems Imaging Department, The University of Texas MD Anderson Cancer Center, 1881 East Road, 3SCR4.3600, Houston, Texas 77054, United States
| | - Shufen Xu
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario M5S 3M2, Canada
| | - Ji Liu
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Yang Chen
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Lijuan Gui
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Hua Li
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Ruixi Li
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang 550004, China
| | - Zhenwei Yuan
- Department of Biomedical Engineering, College of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Bowen Li
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario M5S 3M2, Canada
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Ge L, Lai Q, Liu Y, Tan Z, Zuo P, Ji X, He Z. A universal and sensitive sensing platform for biomolecular detection based on the hybridization chain reaction amplification and gold nanoparticles colorimetry. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Ang ECX, Tan CH. Golden Jubilee of Singapore National Institute of Chemistry (1970-2020): Celebrating its Partnership with Wiley-VCH. Angew Chem Int Ed Engl 2020; 59:19728-19731. [PMID: 32812317 DOI: 10.1002/anie.202002227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Indexed: 11/08/2022]
Abstract
This year Singapore National Institute of Chemistry (SNIC) is celebrating its golden jubilee (1970-2020). Wiley-VCH has been a steadfast partner accompanying the rapid rise of chemistry research in Singapore. In celebration of this golden jubilee, we highlight 50 significant papers published in Angewandte Chemie by scholars currently based in Singapore, covering the widest possible spectrum of chemistry research.
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Affiliation(s)
- Esther Cai Xia Ang
- Singapore National Institute of Chemistry, SPMS-CBC-04-18.5, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Choon-Hong Tan
- Singapore National Institute of Chemistry, SPMS-CBC-04-18.5, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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8
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Ang ECX, Tan C. Golden Jubilee of Singapore National Institute of Chemistry (1970–2020): Celebrating its Partnership with Wiley‐VCH. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Esther Cai Xia Ang
- Singapore National Institute of Chemistry SPMS-CBC-04-18.5 School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Choon‐Hong Tan
- Singapore National Institute of Chemistry SPMS-CBC-04-18.5 School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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Hu M, Han Q, Xing B. Metallic Nanoparticle-Enabled Sensing of a Drug-of-Abuse: An Attempt at Forensic Application. Chembiochem 2020; 21:2512-2517. [PMID: 32282106 DOI: 10.1002/cbic.202000157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/12/2020] [Indexed: 12/30/2022]
Abstract
γ-Hydroxybutyric acid (GHB) functions as a depressant on the central nerve system and serves as a pharmaceutical agent in the treatment of narcolepsy and alcohol withdraw. In recent years, GHB has been misused as a recreational drug due to its ability to induce euphoric feelings. Moreover, it has gained increasing attention as a popular drug of abuse that is frequently related to drug-facilitated sexual assaults. At the moment, detection methods based on chromatography exhibit extraordinary sensitivity for GHB sensing. However, such techniques require complicated sample treatment prior to analysis. Optical sensors provide an alternative approach for rapid and simple analysis of GHB samples. Unfortunately, currently reported probes are mostly based on hydrogen bonding to recognize GHB, and this raises concerns about, for example, the lack of specificity. In this work, we report a bioinspired strategy for selective sensing of GHB. The method is based on specific enzyme recognition to allow highly selective detection of GHB with minimum interference, even in a complex sample matrix (e. g., simulated urine). In addition, the result can be obtained by either quantitative spectroscopy analysis or colorimetric change observed by the naked-eye, thus demonstrating its potential application in drug screening and forensic analysis.
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Affiliation(s)
- Ming Hu
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang link, 637371, Singapore, Singapore
| | - Qinyu Han
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang link, 637371, Singapore, Singapore
| | - Bengang Xing
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang link, 637371, Singapore, Singapore
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10
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Li Q, Qiao X, Wang F, Li X, Yang J, Liu Y, Shi L, Liu D. Encapsulating a Single Nanoprobe in a Multifunctional Nanogel for High-Fidelity Imaging of Caspase Activity in Vivo. Anal Chem 2019; 91:13633-13638. [DOI: 10.1021/acs.analchem.9b02834] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Li X, Cui H, Zeng Z. A Simple Colorimetric and Fluorescent Sensor to Detect Organophosphate Pesticides Based on Adenosine Triphosphate-Modified Gold Nanoparticles. SENSORS 2018; 18:s18124302. [PMID: 30563245 PMCID: PMC6308458 DOI: 10.3390/s18124302] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/12/2018] [Accepted: 12/04/2018] [Indexed: 01/14/2023]
Abstract
A simple and dual modal (colorimetric and fluorescent) sensor for organophosphate pesticides with high sensitivity and selectivity using adenosine triphosphate (ATP)- and rhodamine B-modified gold nanoparticles (RB-AuNPs), was successfully fabricated. This detection for ethoprophos afforded colorimetric and fluorescence imaging changes visualization. The quantitative determination was linearly proportional to the amounts of ethoprophos in the range of a micromolar scale (4.0–15.0 µM). The limit of detection for ethoprophos was as low as 37.0 nM at 3σ/k. Moreover, the extent application of this simple assay was successfully demonstrated in tap water samples with high reliability and applicability, indicating remarkable application in real samples.
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Affiliation(s)
- Xiaoxia Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Zhanghua Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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12
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Piao J, Zhou X, Wu X. Colorimetric human papillomavirus DNA assay based on the retardation of avidin-induced aggregation of gold nanoparticles. Mikrochim Acta 2018; 185:537. [PMID: 30413896 DOI: 10.1007/s00604-018-3065-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/20/2018] [Indexed: 01/08/2023]
Abstract
A colorimetric assay for human papillomavirus (HPV) DNA was developed based on the retardation of the avidin-induced aggregation of gold nanoparticles (AuNPs) by HPV DNA. Positively charged avidin acts as a coagulant for AuNP aggregation. In the presence of the target DNA, however, the aggregation of AuNPs is retarded owing to electrosteric stabilization as a result of the hybridization of the target and probe DNA. In the absence of HPV DNA, the stabilization effect caused by the biotinylated probe DNA is weak, resulting in NP aggregation and a color change from red to purple. Aggregation may be easily observed with bare eyes or spectrophotometrically at about 560 nm. The visual detection limit is 1 nM. The assay was used for the determination of HPV DNA after polymerase chain reaction (PCR) amplification without any further purification. Graphical abstract Schematic presentation of the avidin-induced aggregation of unmodified gold nanoparticles (AuNPs) which leads to a color change from red to purple. In the presence of dsDNA, however, the aggregation is remarkably retarded.
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Affiliation(s)
- Jingyu Piao
- Department of Chemistry, College of Science, Yanbian University, Yanji, Jilin, 133002, China.,Education Department of the Teachers College, Yanbian University, Yanji, Jilin, 133002, China
| | - Xin Zhou
- Department of Chemistry, College of Science, Yanbian University, Yanji, Jilin, 133002, China
| | - Xue Wu
- Department of Chemistry, College of Science, Yanbian University, Yanji, Jilin, 133002, China.
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Aldewachi H, Chalati T, Woodroofe MN, Bricklebank N, Sharrack B, Gardiner P. Gold nanoparticle-based colorimetric biosensors. NANOSCALE 2017; 10:18-33. [PMID: 29211091 DOI: 10.1039/c7nr06367a] [Citation(s) in RCA: 316] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Gold nanoparticles (AuNPs) provide excellent platforms for the development of colorimetric biosensors as they can be easily functionalised, displaying different colours depending on their size, shape and state of aggregation. In the last decade, a variety of biosensors have been developed to exploit the extent of colour changes as nano-particles (NPs) either aggregate or disperse, in the presence of analytes. Of critical importance to the design of these methods is that the behaviour of the systems has to be reproducible and predictable. Much has been accomplished in understanding the interactions between a variety of substrates and AuNPs, and how these interactions can be harnessed as colorimetric reporters in biosensors. However, despite these developments, only a few biosensors have been used in practice for the detection of analytes in biological samples. The transition from proof of concept to market biosensors requires extensive long-term reliability and shelf life testing, and modification of protocols and design features to make them safe and easy to use by the population at large. Developments in the next decade will see the adoption of user friendly biosensors for point-of-care and medical diagnosis as innovations are brought to improve the analytical performances and usability of the current designs. This review discusses the mechanisms, strategies, recent advances and perspectives for the use of AuNPs as colorimetric biosensors.
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Affiliation(s)
- H Aldewachi
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield, UK.
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14
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Aw J, Widjaja F, Ding Y, Mu J, Liang Y, Xing B. Enzyme-responsive reporter molecules for selective localization and fluorescence imaging of pathogenic biofilms. Chem Commun (Camb) 2017; 53:3330-3333. [DOI: 10.1039/c6cc09296a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel enzyme-responsive reporter molecule (ERM-1) for selective localization of AmpC in pathogenic biofilms.
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Affiliation(s)
- Junxin Aw
- Division of Chemistry and Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Frances Widjaja
- Division of Chemistry and Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Yichen Ding
- Centre for Environmental Life Sciences Engineering (SCELSE)
- School of Biological Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Jing Mu
- Division of Chemistry and Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Yang Liang
- Centre for Environmental Life Sciences Engineering (SCELSE)
- School of Biological Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Bengang Xing
- Division of Chemistry and Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
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15
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Li W, Dong K, Ren J, Qu X. A β-Lactamase-Imprinted Responsive Hydrogel for the Treatment of Antibiotic-Resistant Bacteria. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600205] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen Li
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Kai Dong
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
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16
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Li W, Dong K, Ren J, Qu X. A β-Lactamase-Imprinted Responsive Hydrogel for the Treatment of Antibiotic-Resistant Bacteria. Angew Chem Int Ed Engl 2016; 55:8049-53. [DOI: 10.1002/anie.201600205] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/10/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Wen Li
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Kai Dong
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences; Beijing 100039 China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun, Jilin 130022 China
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17
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Chen Y, Xianyu Y, Wu J, Zheng W, Rao J, Jiang X. Point-of-Care Detection of β-Lactamase in Milk with a Universal Fluorogenic Probe. Anal Chem 2016; 88:5605-9. [DOI: 10.1021/acs.analchem.6b01122] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yiping Chen
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
| | - Yunlei Xianyu
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
| | - Jing Wu
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
| | - Wenfu Zheng
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
| | - Jianghong Rao
- Molecular
Imaging Program at Stanford, Departments of Radiology and Chemistry, Stanford University, 1201 Welch Road, Stanford, California 94305-5484,United States
| | - Xingyu Jiang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
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18
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Yue G, Su S, Li N, Shuai M, Lai X, Astruc D, Zhao P. Gold nanoparticles as sensors in the colorimetric and fluorescence detection of chemical warfare agents. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.11.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Hao N, Neranon K, Ramström O, Yan M. Glyconanomaterials for biosensing applications. Biosens Bioelectron 2016; 76:113-30. [PMID: 26212205 PMCID: PMC4637221 DOI: 10.1016/j.bios.2015.07.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/11/2015] [Accepted: 07/14/2015] [Indexed: 02/08/2023]
Abstract
Nanomaterials constitute a class of structures that have unique physiochemical properties and are excellent scaffolds for presenting carbohydrates, important biomolecules that mediate a wide variety of important biological events. The fabrication of carbohydrate-presenting nanomaterials, glyconanomaterials, is of high interest and utility, combining the features of nanoscale objects with biomolecular recognition. The structures can also produce strong multivalent effects, where the nanomaterial scaffold greatly enhances the relatively weak affinities of single carbohydrate ligands to the corresponding receptors, and effectively amplifies the carbohydrate-mediated interactions. Glyconanomaterials are thus an appealing platform for biosensing applications. In this review, we discuss the chemistry for conjugation of carbohydrates to nanomaterials, summarize strategies, and tabulate examples of applying glyconanomaterials in in vitro and in vivo sensing applications of proteins, microbes, and cells. The limitations and future perspectives of these emerging glyconanomaterials sensing systems are furthermore discussed.
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Affiliation(s)
- Nanjing Hao
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA
| | - Kitjanit Neranon
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden.
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA; Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden.
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20
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Specific ionic effect for simple and rapid colorimetric sensing assays of amino acids using gold nanoparticles modified with task-specific ionic liquid. Anal Chim Acta 2016; 902:174-181. [DOI: 10.1016/j.aca.2015.10.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 10/11/2015] [Accepted: 10/28/2015] [Indexed: 11/22/2022]
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21
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Wu S, Tan SY, Ang CY, Luo Z, Zhao Y. Oxidation-triggered aggregation of gold nanoparticles for naked-eye detection of hydrogen peroxide. Chem Commun (Camb) 2016; 52:3508-11. [DOI: 10.1039/c5cc09447j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A gold nanoparticle-based platform for naked-eye detection of H2O2 was realized by changing the surface hydrophilicity.
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Affiliation(s)
- Shaojue Wu
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Si Yu Tan
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Chung Yen Ang
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Zhong Luo
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
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22
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Maji S, Cesur B, Zhang Z, De Geest BG, Hoogenboom R. Poly(N-isopropylacrylamide) coated gold nanoparticles as colourimetric temperature and salt sensors. Polym Chem 2016. [DOI: 10.1039/c5py01959a] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermoresponsive PNIPAM coated AuNPs having dual stabilisation by the polymer chains and the charges, has been utilised for the development of temperature and salt sensors.
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Affiliation(s)
- Samarendra Maji
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Belgin Cesur
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Zhiyue Zhang
- Department of Pharmaceutics
- Ghent University
- 9000 Ghent
- Belgium
| | | | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
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23
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Yan Z, Shi P, Ren J, Qu X. A "Sense-and-Treat" Hydrogel Used for Treatment of Bacterial Infection on the Solid Matrix. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5540-4. [PMID: 26313759 DOI: 10.1002/smll.201501958] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 07/28/2015] [Indexed: 05/28/2023]
Abstract
A "sense-and-treat" hydrogel is constructed for sensing and inhibiting bacterial infection. Without bacteria, the hydrogel emits green fluorescence. With bacterial infection, the hydrogel emits red fluorescence and releases Vancomycin to kill bacteria.
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Affiliation(s)
- Zhengqing Yan
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Peng Shi
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
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24
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Osner ZR, Holz RC, Becker DP. An analytical method for detecting toxic metal cations using cyclotriveratrylene derivative capped gold nanoparticles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Qian J, Jiang L, Yang X, Yan Y, Mao H, Wang K. Highly sensitive impedimetric aptasensor based on covalent binding of gold nanoparticles on reduced graphene oxide with good dispersity and high density. Analyst 2015; 139:5587-93. [PMID: 25166740 DOI: 10.1039/c4an01116c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A series of gold nanoparticles (AuNPs) that were covalently bound to 2-aminothiophenol-functionalized reduced graphene oxide (Au-ATP-rGO) composites have been synthesized with well-dispersed and controllable surface coverage of AuNPs. Aptamer immobilization capacity studies demonstrated that the surface density of AuNPs played a key role in increasing the amount of anchoring aptamers to enhance the sensitivity of affinity based detection. With the composites possessing dense surface coverage of AuNPs as a versatile signal amplified platform, a label-free aptasensor for the sensitive and selective detection of small molecules (ochratoxin A in this case) has been developed using electrochemical impedance spectroscopy (EIS). A wide linear range of 0.1-200 ng mL(-1) was obtained with a low detection limit of 0.03 ng mL(-1) (S/N = 3). This work provides a universal strategy for the sensitive detection of a variety of targets in a truly label-free manner by means of changing the corresponding aptamer. The promising platform based on the combination of Au-ATP-rGO composites, EIS technique, and aptamers would have great potential applications in clinical diagnosis, environmental analysis, and food safety monitoring.
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Affiliation(s)
- Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China.
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26
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Zeng Z, Cui B, Wang Y, Sun C, Zhao X, Cui H. Dual Reaction-Based Multimodal Assay for Dopamine with High Sensitivity and Selectivity Using Functionalized Gold Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16518-16524. [PMID: 26171655 DOI: 10.1021/acsami.5b03956] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple and dual chemical reaction-based multimodal assay for dopamine with high sensitivity and selectivity using two types of functionalized gold nanoparticles (FB-AuNPs/NsNHS-AuNPs), i.e. fluorescein modified gold nanoparticles (FB-AuNPs) and Nile blue modified gold nanoparticles (NsNHS-AuNPs), was successfully fabricated. This assay for dopamine presents colorimetric visualization and double channel fluorescence enhancement at 515 and 665 nm. The absorbance and fluorescence changes were linearly proportional to the amounts of dopamine in the range of nanomolar scale (5-100 nM). The detection limits for absorbance and fluorescence were as low as 1.2 nM and 2.9 nM (S/N = 3), respectively. Furthermore, the extent application of this multimodal assay has been successfully demonstrated in human urine samples with high reliability and applicability, showing remarkable promise in diagnostic purposes.
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Affiliation(s)
- Zhanghua Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Bo Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Changjiao Sun
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Xiang Zhao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
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27
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Ke CY, Wu YT, Tseng WL. Fluorescein-5-isothiocyanate-conjugated protein-directed synthesis of gold nanoclusters for fluorescent ratiometric sensing of an enzyme–substrate system. Biosens Bioelectron 2015; 69:46-53. [DOI: 10.1016/j.bios.2015.02.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 01/15/2023]
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28
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Zhou S, Wang D, Zhao Y, Wu Y. A rapid HPLC method for indirect quantification of β-lactamase activity in milk. J Dairy Sci 2015; 98:2197-204. [DOI: 10.3168/jds.2014-8845] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 11/22/2014] [Indexed: 11/19/2022]
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29
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Agarwal S, Mishra P, Shivange G, Kodipelli N, Moros M, de la Fuente JM, Anindya R. Citrate-capped gold nanoparticles for the label-free detection of ubiquitin C-terminal hydrolase-1. Analyst 2015; 140:1166-73. [DOI: 10.1039/c4an01935k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Ubiquitin C-terminal hydrolase-1 (UCH-L1) is a specific neuronal endoprotease that cleaves the peptide bond between ubiquitin molecules.
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Affiliation(s)
- Srishti Agarwal
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Priyanka Mishra
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Gururaj Shivange
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - Naveena Kodipelli
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
| | - María Moros
- Nanotherapy and Nanodiagnostics Group
- Instituto de Nanociencia de Aragón (INA)
- Universidad de Zaragoza
- Zaragoza
- Spain
| | - Jesús M. de la Fuente
- Nanotherapy and Nanodiagnostics Group
- Instituto de Nanociencia de Aragón (INA)
- Universidad de Zaragoza
- Zaragoza
- Spain
| | - Roy Anindya
- Department of Biotechnology
- Indian Institute of Technology Hyderabad
- Yeddumailaram-502205
- India
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30
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Li L, Li Z, Shi W, Li X, Ma H. Sensitive and Selective Near-Infrared Fluorescent Off–On Probe and Its Application to Imaging Different Levels of β-Lactamase in Staphylococcus aureus. Anal Chem 2014; 86:6115-20. [DOI: 10.1021/ac501288e] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Lihong Li
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhao Li
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen Shi
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaohua Li
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huimin Ma
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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31
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Jornet-Martínez N, González-Béjar M, Moliner-Martínez Y, Campíns-Falcó P, Pérez-Prieto J. Sensitive and selective plasmonic assay for spermine as biomarker in human urine. Anal Chem 2014; 86:1347-51. [PMID: 24428122 DOI: 10.1021/ac404165j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A simple, fast, and highly selective and sensitive colorimetric assay to detect nanomolar levels of spermine in human urine (healthy donors, cancer patients) is reported. This assay is based on the absence of a competitive organic capping on the gold nanoparticles together with the high affinity of the amine groups of the analyte for the nanoparticle surface.
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Affiliation(s)
- N Jornet-Martínez
- Departamento de Química Analítica, Facultad de Química, Universidad de Valencia , Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
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32
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Zhou S, Zhao Y, Mecklenburg M, Yang D, Xie B. A novel thermometric biosensor for fast surveillance of β-lactamase activity in milk. Biosens Bioelectron 2013; 49:99-104. [PMID: 23722048 DOI: 10.1016/j.bios.2013.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/12/2013] [Accepted: 05/02/2013] [Indexed: 10/26/2022]
Abstract
Regulatory restrictions on antibiotic residues in dairy products have resulted in the illegal addition of β-lactamase to lower antibiotic levels in milk in China. Here we demonstrate a fast, sensitive and convenient method based on enzyme thermistor (ET) for the surveillance of β-lactamase in milk. A fixed amount of penicillin G, which is a specific substrate of β-lactamase, was incubated with the milk sample, and an aliquot of the mixture was directly injected into the ET system to give a temperature change corresponding to the remained penicillin G. The amount of β-lactamase present in sample was deduced by the penicillin G consumed during incubation. This method was successfully applied to quantify β-lactamase in milk with the linear range of 1.1-20 UmL(-1) and the detection limit of 1.1 UmL(-1). The recoveries ranged from 93% to 105%, with relative standard deviations (RSDs) below 8%. The stability of the column equipped in ET was also studied, and only 5% decrease of activity was observed after 60 days of use. Compared with the conventional culture-based assay, the advantages of high throughput, timesaving and accurate quantification have made this method an ideal alternative for routine use.
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Affiliation(s)
- Shuang Zhou
- China National Center for Food Safety Risk Assessment, Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, PR China.
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33
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Wang J, Qu X. Recent progress in nanosensors for sensitive detection of biomolecules. NANOSCALE 2013; 5:3589-3600. [PMID: 23529571 DOI: 10.1039/c3nr00084b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Developing sensitive, rapid, and cost-effective methods for detection of biomolecules is important for both clinical and numerous non-clinical applications. During the last two decades, functional nanomaterials with unique physical and chemical properties have provided significant advantages for biological detection. In this feature article, we introduce recent progress in nanobiosensor development by exploiting the optical, electrical and catalytic properties of a range of nanomaterials, with a focus on gold nanoparticles, carbon nanotubes, graphene and carbon dots. In addition, the perspectives on future opportunities and unsolved challenges are also discussed.
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Affiliation(s)
- Jiasi Wang
- Laboratory of Chemical Biology, Division of Biological Inorganic Chemistry, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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34
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Colorimetric and bare-eye determination of fluoride using gold nanoparticle agglomeration probes. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-0972-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Liu X, Wang F, Niazov-Elkan A, Guo W, Willner I. Probing biocatalytic transformations with luminescent DNA/silver nanoclusters. NANO LETTERS 2013; 13:309-314. [PMID: 23252650 DOI: 10.1021/nl304283c] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
DNA-stabilized Ag nanoclusters, AgNCs, act as fluorescent labels for probing enzyme activities and their substrates. The effective quenching of AgNCs by H(2)O(2) enables the probing of H(2)O(2)-generating oxidases. This is demonstrated by following the glucose oxidase-stimulated oxidation of glucose through the enzyme-catalyzed formation of H(2)O(2). Similarly, the effective quenching of the AgNCs by quinones enabled the detection of tyrosinase through the biocatalyzed oxidation of tyrosine, dopamine, or tyramine to the respective quinone products. The sensitive probing of biocatalytic processes by the AgNCs was further implemented to follow bienzyme catalytic cascades involving alkaline phosphatase/tyrosinase and acetylcholine esterase/choline oxidase. The characterization of the alkaline phosphatase/tyrosinase cascade enabled the ultrasensitive detection of alkaline phosphatase (5 × 10(-5) units/mL) and the detection of o-phospho-l-tyrosine that is an important intracellular promoter and control growth factor.
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Affiliation(s)
- Xiaoqing Liu
- Institute of Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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36
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Shin HS, Huh S. Au/Au@polythiophene core/shell nanospheres for heterogeneous catalysis of nitroarenes. ACS APPLIED MATERIALS & INTERFACES 2012; 4:6324-6331. [PMID: 23106495 DOI: 10.1021/am3019417] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Monodisperse Au/Au@polythiophene core/shell nanospheres were facilely prepared through the reduction of gold precursor, AuCl₄⁻, by 2-thiopheneacetonitrile in an aqueous solution. Concomitantly, 2-thiopheneacetonitrile polymerized during this redox process. As a result, Au nanoparticle was encapsulated by conductive polymer shell to afford novel core/shell nanospheres. Interestingly, the shell was composed of very tiny Au nanoparticles surrounded with thiophene polymers. Thus, the new material is best described as Au/Au@polythiophene core/shell nanospheres. FT-IR spectroscopy revealed that the Au nanoparticles were coordinated by the C≡N groups of the polythiophene shell. Some of the C≡N groups were partially hydrolyzed into COOH groups during the redox process because of the acidic reaction condition. The shell was conductive based on the typical ohmic behavior found in electrical measurement. The Au/Au@polythiophene core/shell nanospheres were found to be very active catalysts for the hydrogenation of various nitroarene compounds into corresponding aminoarene compounds in the presence of NaBH₄. Both hydrophilic and hydrophobic nitroarenes were efficiently hydrogenated under mild conditions.
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Affiliation(s)
- Hye-Seon Shin
- Department of Chemistry and Protein Research Center for Bio-Industry, Hankuk University of Foreign Studies, Yongin 449-791, Korea
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37
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Zeng Z, Mizukami S, Kikuchi K. Simple and real-time colorimetric assay for glycosidases activity using functionalized gold nanoparticles and its application for inhibitor screening. Anal Chem 2012; 84:9089-95. [PMID: 23009597 DOI: 10.1021/ac301677v] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of real-time assays for enzymes has been receiving a great deal of attention in biomedical research recently. Self-immolative elimination is the spontaneous and irreversible disassembly of a multicomponent construct into its constituent fragments through a cascade of elimination processes, in response to external stimuli. Here, we report a simple and real-time colorimetric assay for glycosidases (β-galactosidase and β-glucosidase). Self-immolative elimination was utilized to release amines to give rise to aggregation and color change by electrostatic attraction after cleavage of the trigger by enzymes displayed on functionalized gold nanoparticles (Gal-Lip-AuNPs and Glc-Lip-AuNPs, where AuNPs denotes gold nanoparticles). The detection limits for β-galactosidase and β-glucosidase were as low as 9.2 and 22.3 nM at 20 min, and they improved slightly over time. Thus, glycosidase activity was detected successfully in real time, and this technique could be used for glycosidase inhibitor screening, based on real-time colorimetric variation.
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Affiliation(s)
- Zhanghua Zeng
- Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Osaka 565-0871, Japan
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38
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Zelzer M, Todd SJ, Hirst AR, McDonald TO, Ulijn RV. Enzyme responsive materials: design strategies and future developments. Biomater Sci 2012; 1:11-39. [PMID: 32481995 DOI: 10.1039/c2bm00041e] [Citation(s) in RCA: 227] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Enzyme responsive materials (ERMs) are a class of stimuli responsive materials with broad application potential in biological settings. This review highlights current and potential future design strategies for ERMs and provides an overview of the present state of the art in the area.
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Affiliation(s)
- Mischa Zelzer
- WestCHEM, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, U.K..
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39
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Xie X, Xu W, Liu X. Improving colorimetric assays through protein enzyme-assisted gold nanoparticle amplification. Acc Chem Res 2012; 45:1511-20. [PMID: 22786666 DOI: 10.1021/ar300044j] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The discovery of the DNA-mediated assembly of gold nanoparticles was a great moment in the history of science; this understanding and chemical control enabled the rational design of functional nanomaterials as novel probes in biodetection. In contrast with conventional probes such as organic dyes, gold nanoparticles exhibit high photostability and unique size-dependent optical properties. Because of their high extinction coefficients and strong distance dependent optical properties, these nanoparticles have emerged over the past decade as a promising platform for rapid, highly sensitive colorimetric assays that allow for the visual detection of low concentrations of metal ions, small molecules, and biomacromolecules. These discoveries have deepened our knowledge of biological phenomena and facilitated the development of many new diagnostic and therapeutic tools. Despite these many advances and continued research efforts, current nanoparticle-based colorimetric detection systems still suffer from several drawbacks, such as limited sensitivity and selectivity. This Account describes the recent development of colorimetric assays based on protein enzyme-assisted gold nanoparticle amplification. The benefits of such detection systems include significantly improved detection sensitivity and selectivity. First, we discuss the general design of enzyme-modified nanoparticle systems in colorimetric assays. We show that a quantitative understanding of the unique properties of different enzymes is paramount for effective biological assays. We then examine the assays for nucleic acid detection based on different types of enzymes, including endonucleases, ligases, and polymerases. For each of these assays, we identify the underlying principles that contribute to the enhanced detection capability of nanoparticle systems and illustrate them with selected examples. Furthermore, we demonstrate that the combination of gold nanoparticles and specific enzymes can probe enzyme dynamics and function with high specificity, offering substantial advantages in both sensitivity and specificity over conventional detection methods. The screening of nuclease, methyltransferase, protease, and kinase activities can be colorimetrically performed in a straightforward manner. Finally, we discuss examples of colorimetric assays for metal ions and small molecules that constitute important advances toward visual monitoring of enzyme catalytic functions and gene expression. Although these enzyme-assisted assay methods hold great promise for myriad applications in biomedicine and bioimaging, the application of the described techniques in vivo faces formidable challenges. In addition, researchers do not fully understand the interactions of gold nanoparticles with enzyme molecules. This understanding will require the development of new techniques to probe enzyme substrate dynamics at the particle interface with higher spatial resolution and chemical specificity.
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Affiliation(s)
- Xiaoji Xie
- Department of Chemistry, National University of Singapore, Singapore, and Institute of Material Research and Engineering, Singapore
| | - Wei Xu
- Department of Chemistry, National University of Singapore, Singapore, and Institute of Material Research and Engineering, Singapore
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore, and Institute of Material Research and Engineering, Singapore
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40
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Xu W, Xie X, Li D, Yang Z, Li T, Liu X. Ultrasensitive colorimetric DNA detection using a combination of rolling circle amplification and nicking endonuclease-assisted nanoparticle amplification (NEANA). SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:1846-50. [PMID: 22461378 DOI: 10.1002/smll.201200263] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Indexed: 05/18/2023]
Abstract
A combination of rolling circle amplification and nicking endonuclease-assisted nanoparticle amplification (NEANA) is used for the rapid, colorimetric detection of DNA. The integration of rolling circle amplification into the NEANA approach allows for detection of oligonucleotides with arbitrary sequences at ultralow concentrations.
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Affiliation(s)
- Wei Xu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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41
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Saha K, Agasti SS, Kim C, Li X, Rotello VM. Gold nanoparticles in chemical and biological sensing. Chem Rev 2012; 112:2739-79. [PMID: 22295941 PMCID: PMC4102386 DOI: 10.1021/cr2001178] [Citation(s) in RCA: 2742] [Impact Index Per Article: 228.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Krishnendu Saha
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Sarit S. Agasti
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Chaekyu Kim
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Xiaoning Li
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
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42
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Kumar S, Kaur I, Dharamvir K, Bharadwaj LM. Controlling the density and site of attachment of gold nanoparticles onto the surface of carbon nanotubes. J Colloid Interface Sci 2012; 369:23-7. [DOI: 10.1016/j.jcis.2011.11.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 10/11/2011] [Accepted: 11/18/2011] [Indexed: 10/14/2022]
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43
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Pan Y, Guo M, Nie Z, Huang Y, Peng Y, Liu A, Qing M, Yao S. Colorimetric detection of apoptosis based on caspase-3 activity assay using unmodified gold nanoparticles. Chem Commun (Camb) 2012; 48:997-9. [DOI: 10.1039/c1cc15407a] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Shao Q, Xing B. Enzyme responsive luminescent ruthenium(ii) cephalosporin probe for intracellular imaging and photoinactivation of antibiotics resistant bacteria. Chem Commun (Camb) 2012; 48:1739-41. [DOI: 10.1039/c1cc16165b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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45
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Affinity analysis of DNA aptamer-peptide interactions using gold nanoparticles. Anal Biochem 2011; 421:725-31. [PMID: 22214880 DOI: 10.1016/j.ab.2011.12.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 11/28/2011] [Accepted: 12/02/2011] [Indexed: 11/22/2022]
Abstract
Gold nanoparticles (AuNPs) were used as colorimetric probe and fluorescence quencher for affinity analysis of DNA aptamers toward their target mucin 1 (MUC1) peptide. Single-stranded DNA (ssDNA) aptamer-coated AuNPs showed increased stability (i.e., more resistant to aggregation induced by NaCl) in the presence of their target peptide due to the increase in steric protection conferred by the ssDNA-peptide complexes formed on the AuNPs. Based on changes in the UV-vis extinction spectrum of AuNPs (a measure of AuNPs aggregation) and fluorescence restoration of CY5-ssDNA upon ssDNA-peptide complex formation, the formation of the complexes and ssDNA sequence-dependent dissociation constant (K(d)) were determined. Besides the UV-vis and fluorescence measurements, the hydrodynamic diameters, zeta potential measurements, and transmission electron microscopy (TEM) images of AuNPs after various coatings supported the assay principle. The methodology presented herein provides a rapid and sensitive alternative solution for the identification of high affinity binders from systematic evolution of ligands by exponential enrichment (SELEX).
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46
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Chi X, Huang D, Zhao Z, Zhou Z, Yin Z, Gao J. Nanoprobes for in vitro diagnostics of cancer and infectious diseases. Biomaterials 2011; 33:189-206. [PMID: 21959007 DOI: 10.1016/j.biomaterials.2011.09.032] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 09/13/2011] [Indexed: 12/21/2022]
Abstract
The successful and explosive development of nanotechnology is significantly impacting the fields of biology and medicine. Among the spectacular developments of nanobiotechnology, interest has grown in the use of nanomaterials as nanoprobes for bioanalysis and diagnosis. Herein, we review state-of-the-art nanomaterial-based probes and discuss their applications in in vitro diagnostics (IVD) and challenges in bringing these fields together. Major classes of nanoprobes include quantum dots (QDs), plasmonic nanoparticles, magnetic nanoparticles, nanotubes, nanowires, and multifunctional nanomaterials. With the advantages of high volume/surface ratio, surface tailorability, multifunctionality, and intrinsic properties, nanoprobes have tremendous applications in the areas of biomarker discovery, diagnostics of infectious diseases, and cancer detection. The distinguishing features of nanoprobes for in vitro use, such as harmlessness, ultrasensitivity, multiplicity, and point-of-care use, will bring a bright future of nanodiagnosis.
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Affiliation(s)
- Xiaoqin Chi
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Comby S, Gunnlaugsson T. Luminescent lanthanide-functionalized gold nanoparticles: exploiting the interaction with bovine serum albumin for potential sensing applications. ACS NANO 2011; 5:7184-97. [PMID: 21866979 DOI: 10.1021/nn201992z] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
As luminescent surface-functionalized gold nanoparticles emerged as potential powerful analytical tools in the biomedical fields, understanding the interaction of such systems with proteins has become crucial. In the present study, the interaction of luminescent water-soluble gold nanoparticles (AuNP-1·Eu-nta), obtained through the self-assembly of a naphthalene β-diketone antenna with a Eu(III) cyclen complex tethered to the gold surface via a C(12) alkyl thiol spacer, with bovine serum albumin (BSA) was investigated. The changes in the UV-visible absorption and fluorescence spectra of both the antenna and protein, as well as in the time-resolved Eu(III)-centered emission, of the resulting self-assembly were monitored, at physiological pH, as a function of the BSA concentration. We demonstrate that the Eu(III) emission arising from the self-assembly on the AuNP surface is almost completely quenched upon addition of BSA. Binding constant determination clearly showed that the sensitizing antenna was not displaced and that the quenching was the result of the interaction between the antenna and BSA. Detailed spectroscopic studies performed on the nta-BSA system brought a better insight in the strength of such interaction as well as its effect on the protein secondary structure. Finally, the information gathered on each system resulted in applying AuNP-1·Eu-nta-BSA for the luminescent detection of drugs via the perturbation of the nta-BSA interaction. Competitive titrations using ibuprofen and warfarin showed that nta was located in the binding site II of BSA and that the presence of warfarin, a site I drug, did not interfere with the detection of site II ibuprofen.
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Affiliation(s)
- Steve Comby
- School of Chemistry, Centre for Synthesis and Chemical Biology, Trinity College Dublin, Dublin 2, Ireland.
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48
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Wang H, Xu W, Zhang H, Li D, Yang Z, Xie X, Li T, Liu X. EcoRI-modified gold nanoparticles for dual-mode colorimetric detection of magnesium and pyrophosphate ions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1987-1992. [PMID: 21671433 DOI: 10.1002/smll.201100470] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 04/11/2011] [Indexed: 05/30/2023]
Affiliation(s)
- Hongbo Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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49
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Yi J, Chen Z, Xiang J, Zhang F. Photocontrollable J-aggregation of a diarylethene-phthalocyanine hybrid and its aggregation-stabilized photochromic behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8061-8066. [PMID: 21667954 DOI: 10.1021/la201197k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The photocontrollable J-aggregation of a diarylethene-phthalocyanine hybrid (T-ZnPc) and its aggregation-stabilized photochromic behavior were investigated by various techniques. T-ZnPc initially exhibited slight J-aggregation tendency in solvents such as chloroform and toluene through conformational planarization effect, but formed much stronger J-aggregates upon the illumination of 254 nm UV light. In darkness, the UV-irradiated solutions gradually returned to their initial state. These phenomena can be explained by the pronounced change in molecular planarity accompanying the reversible isomerization of the diarylethene units of T-ZnPc. Besides, we have found that the thermal stability of the closed-ring diarylethene isomers in molecularly dispersed T-ZnPc is much poorer than that in aggregates. As long as the aggregates were broken, they converted to corresponding open-ring form instantly. This study provided an example of fully photocontrollable aggregation of phthalocyanines and paved a new way for improving the stability of the photochromic systems.
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Affiliation(s)
- Jiaxiang Yi
- The Key Lab of Organic Photoelectrons & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
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50
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Tiwari PM, Vig K, Dennis VA, Singh SR. Functionalized Gold Nanoparticles and Their Biomedical Applications. NANOMATERIALS 2011; 1:31-63. [PMID: 28348279 PMCID: PMC5315048 DOI: 10.3390/nano1010031] [Citation(s) in RCA: 439] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 06/03/2011] [Accepted: 06/08/2011] [Indexed: 12/26/2022]
Abstract
Metal nanoparticles are being extensively used in various biomedical applications due to their small size to volume ratio and extensive thermal stability. Gold nanoparticles (GNPs) are an obvious choice due to their amenability of synthesis and functionalization, less toxicity and ease of detection. The present review focuses on various methods of functionalization of GNPs and their applications in biomedical research. Functionalization facilitates targeted delivery of these nanoparticles to various cell types, bioimaging, gene delivery, drug delivery and other therapeutic and diagnostic applications. This review is an amalgamation of recent advances in the field of functionalization of gold nanoparticles and their potential applications in the field of medicine and biology.
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Affiliation(s)
- Pooja M Tiwari
- Center for NanoBiotechnology Research, Alabama State University, 1627, Hall Street, Montgomery, AL 36101, USA.
| | - Komal Vig
- Center for NanoBiotechnology Research, Alabama State University, 1627, Hall Street, Montgomery, AL 36101, USA.
| | - Vida A Dennis
- Center for NanoBiotechnology Research, Alabama State University, 1627, Hall Street, Montgomery, AL 36101, USA.
| | - Shree R Singh
- Center for NanoBiotechnology Research, Alabama State University, 1627, Hall Street, Montgomery, AL 36101, USA.
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