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Reverberi AP, Vocciante M, Salerno M, Soda O, Fabiano B. A sustainable, top-down mechanosynthesis of carbohydrate-functionalized silver nanoparticles. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00391g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method for the production of metal nanoparticles with a tribological process is proposed, aiming at minimising power consumption and risk factors related to unsafe unit operations.
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Affiliation(s)
- Andrea Pietro Reverberi
- DCCI – Department of Chemistry and Industrial Chemistry, Genova University, via Dodecaneso 31, 16146 Genova, Italy
| | - Marco Vocciante
- DCCI – Department of Chemistry and Industrial Chemistry, Genova University, via Dodecaneso 31, 16146 Genova, Italy
| | - Marco Salerno
- Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Omar Soda
- DCCI – Department of Chemistry and Industrial Chemistry, Genova University, via Dodecaneso 31, 16146 Genova, Italy
| | - Bruno Fabiano
- DICCA – Department of Civil, Chemical and Environmental Engineering, Polytechnic School, Genova University, via Opera Pia 15, 16145 Genova, Italy
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2
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Huang JY, Lin HT, Chen TH, Chen CA, Chang HT, Chen CF. Signal Amplified Gold Nanoparticles for Cancer Diagnosis on Paper-Based Analytical Devices. ACS Sens 2018; 3:174-182. [PMID: 29282979 DOI: 10.1021/acssensors.7b00823] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, we report a highly sensitive colorimetric sensing strategy for cancer biomarker diagnosis using gold nanoparticles (AuNPs) labeled with biotinylated poly(adenine) ssDNA sequences and streptavidin-horseradish peroxidase for enzymatic signal enhancement. By adopting this DNA-AuNP nanoconjugate sensing strategy, we were able to eliminate the complicated and costly thiol-binding process typically used to modify AuNP surfaces with ssDNA. In addition, different antibodies can be introduced to the AuNP surfaced via electrostatic interactions to provide highly specific recognition sites for biomolecular sensing. Moreover, multiple, simultaneous tests can be rapidly performed with low sample consumption by incorporating these surface-modified AuNPs into a paper-based analytical device that can be read using just a smartphone. As a result of these innovations, we were able to achieve a detection limit of 10 pg/mL for a prostate specific antigen in a test that could be completed in as little as 15 min. These results suggest that the proposed paper platform possesses the capability for sensitive, high-throughput, and on-site prognosis in resource-limited settings.
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Affiliation(s)
- Jia-Yu Huang
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
| | - Hong-Ting Lin
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
| | - Tzu-Heng Chen
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
| | - Chung-An Chen
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
| | - Chien-Fu Chen
- Department of Chemistry, ‡Institute of Applied Mechanics, and §Center for Emerging Material and Advanced
Devices, National Taiwan University, Taipei 106, Taiwan
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Wiederoder MS, Kendall E, Han JH, Ulrich R, DeVoe DL. Flow-through microfluidic immunosensors with refractive index-matched silica monoliths as volumetric optical detection elements. SENSORS AND ACTUATORS. B, CHEMICAL 2018; 254:878-886. [PMID: 29225421 PMCID: PMC5716804 DOI: 10.1016/j.snb.2017.07.137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A sensitive and rapid absorbance based immunosensor that utilizes ex situ functionalized porous silica monoliths as volumetric optical detection elements is demonstrated in this study. The porous monolith structure facilitates high capture probe density and short diffusion length scales, enabling sensitive and rapid assays. Silica monoliths, synthesized and functionalized with immunocapture probes off-chip before integration into a sealed thermoplastic microfluidic device, serve to capture target antigens during perfusion through the porous structure. Gold nanoparticle immunoconjugates are combined with silver enhancement to create microscale silver clusters, followed by perfusion of an aqueous sucrose solution to limit light scattering and enhance optical signal. Using this approach, detection limits as low as 1 ng/mL are achieved for a sandwich assay, with a dynamic range of at least 4 logs. The results confirm that the combination of on-chip index matching with functionalized porous silica monoliths can enables simple and practical flow-through immunoassays for the sensitive and rapid detection of target antigens.
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Affiliation(s)
- M. S. Wiederoder
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - E.L. Kendall
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA
| | - J.-H. Han
- Molecular and Translational Sciences, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), Frederick, Maryland, USA
| | - R.G. Ulrich
- Molecular and Translational Sciences, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), Frederick, Maryland, USA
| | - D. L. DeVoe
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA
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Qian RC, Lv J, Li HW, Long YT. Sugar-Coated Nanobullet: Growth Inhibition of Cancer Cells Induced by Metformin-Loaded Glyconanoparticles. ChemMedChem 2017; 12:1823-1827. [DOI: 10.1002/cmdc.201700583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Ruo-Can Qian
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Jian Lv
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Hao-Wen Li
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
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Sugawara K, Kadoya T, Kuramitz H, Mihara Y. Design of carbohydrate/electron-transfer peptides for human histocytic lymphoma cell sensing. Anal Chim Acta 2017; 983:198-205. [PMID: 28811027 DOI: 10.1016/j.aca.2017.06.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/08/2017] [Accepted: 06/12/2017] [Indexed: 11/19/2022]
Abstract
A carbohydrate/electro-transfer peptide probe was fabricated to perform cell sensing. The probe consisted of a cello-oligosaccharide that was created by the conjugation of an electron-transfer peptide (Y5C) and a carbohydrate via a Schiff base. An oxidation wave due to a phenolic hydroxyl group was obtained by scanning with a glassy carbon electrode. This cell-sensing system was based on a competitive reaction between carbohydrates on a cell surface and the probe as each reacted to a protein that recognized the carbohydrate. When amounts of the protein and probe were constant, the peak current of the probe was changed as the number of cells increased. A human histocytic lymphoma cell (U937 cell) with carbohydrates such as glucose and N-acetylglucosamine on its surface was selected as the target cell. Wheat germ agglutinin (WGA) binded to both the probe and the carbohydrates on U937 cells, which resulted in a linear peak current of the cellobiose/electron-transfer peptide at concentrations that ranged from 100 to 3500 cells/ml. The values of the cell sensing using this electrochemical method were consistent with those established via ELSIA. The sensitivity of this procedure, however, was two-fold superior to that of ELISA. Consequently, this carbohydrate/electron-transfer peptide could be a powerful tool for cell sensing and searching for carbohydrate chains on a cell surface.
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Affiliation(s)
| | | | - Hideki Kuramitz
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan
| | - Yoshihiro Mihara
- Hokkaido Pharmaceutical University School of Pharmacy, Sapporo 006-8590, Japan
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Shen C, Zhang K, Gao N, Wei S, Liu G, Chai Y, Yang M. Colorimetric and electrochemical determination of the activity of protein kinase based on retarded particle growth due to binding of phosphorylated peptides to DNA – capped silver nanoclusters. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1944-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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7
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Single plasmonic nanoparticles for ultrasensitive DNA sensing: From invisible to visible. Biosens Bioelectron 2016; 79:266-72. [DOI: 10.1016/j.bios.2015.12.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/05/2015] [Accepted: 12/12/2015] [Indexed: 01/16/2023]
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8
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Marín MJ, Schofield CL, Field RA, Russell DA. Glyconanoparticles for colorimetric bioassays. Analyst 2015; 140:59-70. [PMID: 25277069 DOI: 10.1039/c4an01466a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Carbohydrate molecules are involved in many of the cellular processes that are important for life. By combining the specific analyte targeting of carbohydrates with the multivalent structure and change of solution colour as a consequence of plasmonic interactions with the aggregation of metal nanoparticles, glyconanoparticles have been used extensively for the development of bioanalytical assays. The noble metals used to create the nanocore, the methodologies used to assemble the carbohydrates on the nanoparticle surface, the carbohydrate chosen for each specific target, the length of the tether that separates the carbohydrate from the nanocore and the density of carbohydrates on the surface all impact on the structural formation of metal based glyconanoparticles. This tutorial review highlights these key components, which directly impact on the selectivity and sensitivity of the developed bioassay, for the colorimetric detection of lectins, toxins and viruses.
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Affiliation(s)
- María J Marín
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, Norfolk NR4 7TJ, UK.
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Fluorescence imaging for in situ detection of cell surface sialic acid by competitive binding of 3-(dansylamino)phenylboronic acid. Anal Chim Acta 2015; 894:85-90. [DOI: 10.1016/j.aca.2015.08.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 08/25/2015] [Accepted: 08/27/2015] [Indexed: 12/19/2022]
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10
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Wiederoder MS, Peterken L, Lu AX, Rahmanian OD, Raghavan SR, DeVoe DL. Optical detection enhancement in porous volumetric microfluidic capture elements using refractive index matching fluids. Analyst 2015; 140:5724-31. [PMID: 26160546 PMCID: PMC4516631 DOI: 10.1039/c5an00988j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous volumetric capture elements in microfluidic sensors are advantageous compared to planar capture surfaces due to higher reaction site density and decreased diffusion lengths that can reduce detection limits and total assay time. However a mismatch in refractive indices between the capture matrix and fluid within the porous interstices results in scattering of incident, reflected, or emitted light, significantly reducing the signal for optical detection. Here we demonstrate that perfusion of an index-matching fluid within a porous matrix minimizes scattering, thus enhancing optical signal by enabling the entire capture element volume to be probed. Signal enhancement is demonstrated for both fluorescence and absorbance detection, using porous polymer monoliths in a silica capillary and packed beds of glass beads within thermoplastic microchannels, respectively. Fluorescence signal was improved by a factor of 3.5× when measuring emission from a fluorescent compound attached directly to the polymer monolith, and up to 2.6× for a rapid 10 min direct immunoassay. When combining index matching with a silver enhancement step, a detection limit of 0.1 ng mL(-1) human IgG and a 5 log dynamic range was achieved. The demonstrated technique provides a simple method for enhancing optical sensitivity for a wide range of assays, enabling the full benefits of porous detection elements in miniaturized analytical systems to be realized.
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Affiliation(s)
- M. S. Wiederoder
- Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - L. Peterken
- Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - A. X. Lu
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, USA
| | - O. D. Rahmanian
- Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - S. R. Raghavan
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, USA
| | - D. L. DeVoe
- Department of Bioengineering, University of Maryland, College Park, Maryland, USA
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, USA
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland, USA
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Electrochemical immunoassay for the protein biomarker mucin 1 and for MCF-7 cancer cells based on signal enhancement by silver nanoclusters. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1471-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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García I, Sánchez-Iglesias A, Henriksen-Lacey M, Grzelczak M, Penadés S, Liz-Marzán LM. Glycans as Biofunctional Ligands for Gold Nanorods: Stability and Targeting in Protein-Rich Media. J Am Chem Soc 2015; 137:3686-92. [DOI: 10.1021/jacs.5b01001] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Isabel García
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 50018 Aragon, Spain
| | | | | | - Marek Grzelczak
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Soledad Penadés
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 50018 Aragon, Spain
| | - Luis M. Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 50018 Aragon, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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Chen Y, Ding L, Liu T, Ju H. Arrayed Profiling of Multiple Glycans on Whole Living Cell Surfaces. Anal Chem 2013; 85:11153-8. [DOI: 10.1021/ac403150n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yunlong Chen
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
| | - Lin Ding
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
| | - Tingting Liu
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, Jiangsu 210093, P. R. China
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Ju H. Grand challenges in analytical chemistry: towards more bright eyes for scientific research, social events and human health. Front Chem 2013; 1:5. [PMID: 24790934 PMCID: PMC3982555 DOI: 10.3389/fchem.2013.00005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 03/06/2013] [Indexed: 11/13/2022] Open
Affiliation(s)
- Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing UniversityNanjing, PR China
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Bertók T, Katrlík J, Gemeiner P, Tkac J. Electrochemical lectin based biosensors as a label-free tool in glycomics. Mikrochim Acta 2013; 180:1-13. [PMID: 27239071 PMCID: PMC4883647 DOI: 10.1007/s00604-012-0876-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Glycans and other saccharide moieties attached to proteins and lipids, or present on the surface of a cell, are actively involved in numerous physiological or pathological processes. Their structural flexibility (that is based on the formation of various kinds of linkages between saccharides) is making glycans superb "identity cards". In fact, glycans can form more "words" or "codes" (i.e., unique sequences) from the same number of "letters" (building blocks) than DNA or proteins. Glycans are physicochemically similar and it is not a trivial task to identify their sequence, or - even more challenging - to link a given glycan to a particular physiological or pathological process. Lectins can recognise differences in glycan compositions even in their bound state and therefore are most useful tools in the task to decipher the "glycocode". Thus, lectin-based biosensors working in a label-free mode can effectively complement the current weaponry of analytical tools in glycomics. This review gives an introduction into the area of glycomics and then focuses on the design, analytical performance, and practical utility of lectin-based electrochemical label-free biosensors for the detection of isolated glycoproteins or intact cells.
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Affiliation(s)
- Tomáš Bertók
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Jaroslav Katrlík
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Peter Gemeiner
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
| | - Jan Tkac
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovak Republic
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Guo YS, Li XM, Ye SJ, Zhang SS. Modern optical techniques provide a bright outlook for cell analysis. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Qian R, Ding L, Bao L, He S, Ju H. In situ electrochemical assay of cell surface sialic acids featuring highly efficient chemoselective recognition and a dual-functionalized nanohorn probe. Chem Commun (Camb) 2012; 48:3848-50. [DOI: 10.1039/c2cc18167c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Cao X, Ye Y, Liu S. Gold nanoparticle-based signal amplification for biosensing. Anal Biochem 2011; 417:1-16. [DOI: 10.1016/j.ab.2011.05.027] [Citation(s) in RCA: 301] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/09/2011] [Accepted: 05/17/2011] [Indexed: 12/11/2022]
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23
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Ji H, Dong H, Yan F, Lei J, Ding L, Gao W, Ju H. Visual Scanometric Detection of DNA through Silver Enhancement Regulated by Gold-Nanoparticle Aggregation with a Molecular Beacon as the Trigger. Chemistry 2011; 17:11344-9. [DOI: 10.1002/chem.201100563] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2011] [Indexed: 11/11/2022]
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Tseng YT, Chang HT, Chen CT, Chen CH, Huang CC. Preparation of highly luminescent mannose-gold nanodots for detection and inhibition of growth of Escherichia coli. Biosens Bioelectron 2011; 27:95-100. [PMID: 21757332 DOI: 10.1016/j.bios.2011.06.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 06/16/2011] [Accepted: 06/18/2011] [Indexed: 10/18/2022]
Abstract
In this paper, we describe a novel, simple, and convenient method for preparing water-soluble biofunctional gold nanodots (Au NDs) for the sensitive and selective detection of Escherichia coli (E. coli) and the inhibition of its growth. We obtained luminescent mannose-capped Au NDs (Man-Au NDs) from as-prepared 2.9-nm Au nanoparticles (Au NPs) and 29,29'-dithio bis(3',6',9',12',15',18'-hexaoxa-nonacosyl α-D-mannopyranoside) (Man-RSSR-Man). To obtain improved quantum yield (>20%), luminescent Man-Au NDs (1.8 nm) were prepared from Au NPs (0.47 μM) and Man-RSSR-Man (2.5 mM) in the presence of sodium borohydride (NaBH(4); 1.0 mM). The highly luminescent properties of Man-Au NDs prepared by the NaBH(4)-assisted method were characterized by UV-vis absorption, photoluminescence, and X-ray photoelectron spectroscopies. The results supported the high-density coverage of the NDs surface by Man-RS ligands. Multivalent interactions between Man-Au NDs and FimH proteins located on the bacterial pili of E. coli resulted in the formation of aggregated cell clusters. After concentrating this agglutinative E. coli from a large-volume cell solution (5 mL), Man-Au NDs were displaced by mannose (100 mM) and stabilized by Man-RSSR-Man (5 mM). Monitoring the luminescence of Man-Au NDs allowed the detection of E. coli at levels as low as 150 CFU/mL. Man-Au NDs were also found to be efficient antibacterial agents, selectively inhibiting the growth of E. coli through Man-Au ND-induced agglutination. Our small-diameter Man-Au NDs, which provided an ultra high ligand density (local concentration) of mannose units for multivalent interactions with E. coli, have great potential for use as an antibacterial agent in other applications.
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Affiliation(s)
- Yu-Ting Tseng
- Institute of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
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Marradi M, García I, Penadés S. Carbohydrate-Based Nanoparticles for Potential Applications in Medicine. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:141-73. [DOI: 10.1016/b978-0-12-416020-0.00004-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ding L, Xiao X, Chen Y, Qian R, Bao L, Ju H. Competition-based transfer of carbohydrate expression information from a cell-adhered surface to a secondary surface. Chem Commun (Camb) 2011; 47:3742-4. [DOI: 10.1039/c1cc10164a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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27
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Ding L, Ju H. Biofunctionalization of nanoparticles for cytosensing and cell surface carbohydrate assay. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm13700j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Han E, Ding L, Jin S, Ju H. Electrochemiluminescent biosensing of carbohydrate-functionalized CdS nanocomposites for in situ label-free analysis of cell surface carbohydrate. Biosens Bioelectron 2011; 26:2500-5. [DOI: 10.1016/j.bios.2010.10.044] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 10/12/2010] [Accepted: 10/25/2010] [Indexed: 12/28/2022]
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Cheng W, Chen Y, Yan F, Ding L, Ding S, Ju H, Yin Y. Ultrasensitive scanometric strategy for detection of matrix metalloproteinases using a histidine tagged peptide–Au nanoparticle probe. Chem Commun (Camb) 2011; 47:2877-9. [DOI: 10.1039/c0cc04441e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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