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Vincy A, Gaikwad Y, Agarwal H, Jain N, Vankayala R. A Label-Free and Ultrasensitive Prussian Blue-Based Dipstick Sensor for Bacterial and Biofilm Detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14246-14255. [PMID: 37750674 DOI: 10.1021/acs.langmuir.3c01451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Water and food contamination has become the major contributor to infections and deaths. However, rapid and sensitive bacterial detection still remains an unmet demand that has attracted widespread attention. Often water and food samples are sent out for laboratory testing to detect the presence of contamination, which is time-consuming and laborious. Herein, we have developed a highly sensitive, tenable, affordable, and robust (STAR) paper-based colorimetric dipstick sensor based on the principle of Prussian blue (PB) synthesis as an indicator of bacterial contamination. In the presence of bacteria, it leads to the formation of PB, a dye that acts as a colorimetric indicator. The intensity of the PB is the direct measure of the degree of contamination. The fabrication of the STAR dipstick sensor involves a simple and cost-effective process. The STAR dipstick sensor is ultrasensitive and can detect up to 101 CFU/mL of bacteria within minutes of contact with the test sample. The STAR dipstick sensor is fabricated using biodegradable components, which is speculated to facilitate quick and environmentally friendly degradation after each use. The sensor has been validated for its properties and capabilities at different pH to detect both Gram-positive and Gram-negative bacterial strains in real-time samples. The stability and degradation were also monitored. Comprehensively, the proposed STAR dipstick sensor can serve as a point-of-care device to detect bacterial contamination in a swift and sensitive manner.
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Affiliation(s)
- Antony Vincy
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India
| | - Yohan Gaikwad
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India
| | - Harshita Agarwal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India
| | - Neha Jain
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India
- Centre for Emerging Technologies for Sustainable Development (CETSD), Indian Institute of Technology Jodhpur, Karwar 342030, India
| | - Raviraj Vankayala
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Karwar 342030, India
- Interdisciplinary Research Platform, Smart Healthcare, Indian Institute of Technology Jodhpur, Karwar 342030, India
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2
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Cao Y, Song W, Chen X. Multivalent sialic acid materials for biomedical applications. Biomater Sci 2023; 11:2620-2638. [PMID: 36661319 DOI: 10.1039/d2bm01595a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Sialic acid is a kind of monosaccharide expressed on the non-reducing end of glycoproteins or glycolipids. It acts as a signal molecule combining with its natural receptors such as selectins and siglecs (sialic acid-binding immunoglobulin-like lectins) in intercellular interactions like immunological surveillance and leukocyte infiltration. The last few decades have witnessed the exploration of the roles that sialic acid plays in different physiological and pathological processes and the use of sialic acid-modified materials as therapeutics for related diseases like immune dysregulation and virus infection. In this review, we will briefly introduce the biomedical function of sialic acids in organisms and the utilization of multivalent sialic acid materials for targeted drug delivery as well as therapeutic applications including anti-inflammation and anti-virus.
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Affiliation(s)
- Yusong Cao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, Hefei, 230026, China
| | - Wantong Song
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, Hefei, 230026, China.,Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, Hefei, 230026, China.,Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, China
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3
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Verma N, Badhe Y, Gupta R, Maparu AK, Rai B. Peptide mediated colorimetric detection of SARS-CoV-2 using gold nanoparticles: a molecular dynamics simulation study. J Mol Model 2022; 28:202. [PMID: 35750893 PMCID: PMC9244531 DOI: 10.1007/s00894-022-05184-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 06/07/2022] [Indexed: 10/28/2022]
Abstract
The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has necessitated the development of a rapid, simple yet selective naked-eye detection methodology that does not require any advanced instrumental techniques. In this study, we report our computational findings on the detection of SARS-CoV-2 using peptide- functionalized gold nanoparticles (GNPs). The peptide has been screened from angiotensin-converting enzyme 2 (ACE2) receptor situated on the surface of the host cell membrane which interacts with the spike protein of SARS-CoV-2, resulting entry of the virus into the host cell. As a result, the peptide-functionalized GNPs possess excellent affinity towards the spikes of SARS-CoV-2 and readily get aggregated once exposed to SARS-CoV-2 antigen or virus. The stability of the peptides on the surface of GNPs and their interaction with the spike protein of the virus have been investigated using coarse-grained molecular dynamic simulations. The potential of mean force calculation of spike protein confirmed strong binding between peptide and receptor-binding domain (RBD) of spike protein. Our in silico results demonstrate the potential of the peptide-functionalized GNPs in the development of simple and rapid colorimetric biosensors for clinical diagnosis.
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Affiliation(s)
- Nitu Verma
- Physical Sciences Research Area, Tata Research Development and Design Centre, TCS Research, Tata Consultancy Services, 54B, Hadapsar Industrial Estate, Pune, 411013, India
| | - Yogesh Badhe
- Physical Sciences Research Area, Tata Research Development and Design Centre, TCS Research, Tata Consultancy Services, 54B, Hadapsar Industrial Estate, Pune, 411013, India
| | - Rakesh Gupta
- Physical Sciences Research Area, Tata Research Development and Design Centre, TCS Research, Tata Consultancy Services, 54B, Hadapsar Industrial Estate, Pune, 411013, India.
| | - Auhin Kumar Maparu
- Physical Sciences Research Area, Tata Research Development and Design Centre, TCS Research, Tata Consultancy Services, 54B, Hadapsar Industrial Estate, Pune, 411013, India.
| | - Beena Rai
- Physical Sciences Research Area, Tata Research Development and Design Centre, TCS Research, Tata Consultancy Services, 54B, Hadapsar Industrial Estate, Pune, 411013, India
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4
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Zhao H, Ni B, Jin X, Zhang H, Hou JJ, Hou L, Marsh JH, Dong L, Li S, Gao XW, Shi D, Liu X, Xiong J. Gold-viral particle identification by deep learning in wide-field photon scattering parametric images. APPLIED OPTICS 2022; 61:546-553. [PMID: 35200896 DOI: 10.1364/ao.445953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
The ability to identify virus particles is important for research and clinical applications. Because of the optical diffraction limit, conventional optical microscopes are generally not suitable for virus particle detection, and higher resolution instruments such as transmission electron microscopy (TEM) and scanning electron microscopy (SEM) are required. In this paper, we propose a new method for identifying virus particles based on polarization parametric indirect microscopic imaging (PIMI) and deep learning techniques. By introducing an abrupt change of refractivity at the virus particle using antibody-conjugated gold nanoparticles (AuNPs), the strength of the photon scattering signal can be magnified. After acquiring the PIMI images, a deep learning method was applied to identify discriminating features and classify the virus particles, using electron microscopy (EM) images as the ground truth. Experimental results confirm that gold-virus particles can be identified in PIMI images with a high level of confidence.
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5
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Affiliation(s)
- Mohamed Sharafeldin
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
| | - Jason J. Davis
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
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6
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Chaudhary PM, Toraskar S, Yadav R, Hande A, Yellin R, Kikkeri R. Multivalent Sialosides: A Tool to Explore the Role of Sialic Acids in Biological Processes. Chem Asian J 2019; 14:1344-1355. [PMID: 30839167 PMCID: PMC7159662 DOI: 10.1002/asia.201900031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/05/2019] [Indexed: 12/29/2022]
Abstract
Sialic acids (Sias) are fascinating nine-carbon monosaccharides that are primarily found on the terminus of the oligosaccharide chains of glycoproteins and glycolipids on cell surfaces. These Sias undergo a variety of structural modifications at their hydroxy and amine positions, thereby resulting in structural diversity and, hence, coordinating a variety of biological processes. However, deciphering the structural functions of such interactions is highly challenging, because the monovalent binding of Sias is extremely weak. Over the last decade, several multivalent Sia ligands have been synthesized to modulate their binding affinity with proteins/lectins. In this Minireview, we highlight recent developments in the synthesis of multivalent Sia probes and their potential applications. We will discuss four key multivalent families, that is, polymers, dendrimers, liposomes, and nanoparticles, and will emphasize the major parameters that are essential for the specific interactions of these molecules with proteins in biological systems.
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Affiliation(s)
- Preeti Madhukar Chaudhary
- Department of ChemistryIndian Institute of Science Education and ResearchDr. Homi Bhabha RoadPune411008MaharashtraIndia
| | - Suraj Toraskar
- Department of ChemistryIndian Institute of Science Education and ResearchDr. Homi Bhabha RoadPune411008MaharashtraIndia
| | - Rohan Yadav
- Department of ChemistryIndian Institute of Science Education and ResearchDr. Homi Bhabha RoadPune411008MaharashtraIndia
| | - Akshay Hande
- Department of ChemistryIndian Institute of Science Education and ResearchDr. Homi Bhabha RoadPune411008MaharashtraIndia
| | - Rina‐Arad Yellin
- Guangdong Technion Israel Institute of Technology241 Daxue RoadShantouGuangdong515063P. R. China
| | - Raghavendra Kikkeri
- Department of ChemistryIndian Institute of Science Education and ResearchDr. Homi Bhabha RoadPune411008MaharashtraIndia
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7
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Ogata M, Yamanaka T, Koizumi A, Sakamoto M, Aita R, Endo H, Yachi T, Yamauchi N, Otsubo T, Ikeda K, Kato T, Park EY, Kono H, Nemoto M, Hidari KIPJ. Application of Novel Sialoglyco Particulates Enhances the Detection Sensitivity of the Equine Influenza Virus by Real-Time Reverse Transcriptase Polymerase Chain Reaction. ACS APPLIED BIO MATERIALS 2019; 2:1255-1261. [DOI: 10.1021/acsabm.8b00813] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Makoto Ogata
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Takashi Yamanaka
- Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke, Tochigi 329-0412, Japan
| | - Ami Koizumi
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Mao Sakamoto
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Rena Aita
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Hiroyuki Endo
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Takehiro Yachi
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Fukushima College, 30 Nagao, Iwaki, Fukushima 970-8034, Japan
| | - Noriko Yamauchi
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa-cho, Hitachi, Ibaraki 316-8511, Japan
| | - Tadamune Otsubo
- Department of Organic Chemistry, School of Pharmaceutical Sciences, Hiroshima International University, Kure-shi, Hiroshima, Japan
| | - Kiyoshi Ikeda
- Department of Organic Chemistry, School of Pharmaceutical Sciences, Hiroshima International University, Kure-shi, Hiroshima, Japan
| | - Tatsuya Kato
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Enoch Y. Park
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Hiroyuki Kono
- Division of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Nishikioka 443, Tomakomai, Hokkaido 059-1275, Japan
| | - Manabu Nemoto
- Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke, Tochigi 329-0412, Japan
| | - Kazuya I. P. J. Hidari
- Department of Food and Nutrition, Junior College Division, University of Aizu, 1-1 Aza-Kadota, Yahata, Ikki-machi, Aizuwakamatsu, Fukushima 965-8570, Japan
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8
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Hata Y, Sawada T, Serizawa T. Macromolecular crowding for materials-directed controlled self-assembly. J Mater Chem B 2018; 6:6344-6359. [PMID: 32254643 DOI: 10.1039/c8tb02201a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Macromolecular crowding refers to intracellular environments where various macromolecules, including proteins and nucleic acids, are present at high total concentrations. Its influence on biological processes has been investigated using a highly concentrated in vitro solution of water-soluble polymers as a model. Studies have revealed significant effects of macromolecular crowding on the thermodynamic equilibria and dynamics of biomolecular self-assembly in vivo. Recently, macromolecular crowding has attracted materials scientists, especially those in bio-related areas, as a tool to control molecular/colloidal self-assembly. Macromolecular crowding has been exploited to control the structure of supramolecular materials, assemble nanomaterials, and improve the performance of polymeric materials. Furthermore, nanostructured materials have been shown to be an interesting alternative to water-soluble polymers for creating crowded environments for controlled self-assembly. In this review article, we summarize recent progress in research on macromolecular crowding for controlled self-assembly in bio-related materials chemistry.
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Affiliation(s)
- Yuuki Hata
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
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9
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Sebastian M, Aravind A, Mathew B. Green silver-nanoparticle-based dual sensor for toxic Hg(II) ions. NANOTECHNOLOGY 2018; 29:355502. [PMID: 29889047 DOI: 10.1088/1361-6528/aacb9a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present study focuses on the utilization of green silver nanoparticles, as they are preferred for sensing applications due to their environmentally friendly nature. We have examined the optical and electrochemical sensing behavior of silver nanoparticles from Agaricus bisporus (AgNP-AB) towards Hg(II) ions. The AgNP-AB was prepared by microwave reactor. The synthesized AgNP was used for the sensing of Hg(II) ions without the use of modifiers or further sophisticated instrumentation. The synthesized nanoparticles were successfully characterized by different techniques. AgNP-AB leads to aggregation with the addition of Hg(II) ions in aqueous medium, and develops a color change from brown to black which leads to the formation of AgNP-AB-Hg(II) complex. Moreover, the metal sensing ability of AgNP has been explored using electrochemical studies. AgNP-AB modified platinum electrode (AgNP-AB/PE) was developed for the fast sensing of toxic Hg(II) ions. The sensor exhibits a good limit of detection at 2.1 × 10-6 M. The sensitivity of AgNP-AB/PE towards Hg(II) ions was analyzed with various metal ions. The sensing skill of the developed system was successfully checked with real water samples from Vembanade Lake, Kumarakom, Kerala. AgNP from A. bisporus is highly versatile and promising for different environmental applications.
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Affiliation(s)
- Maria Sebastian
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam-686560, Kerala, India
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10
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Poonthiyil V, Lindhorst TK, Golovko VB, Fairbanks AJ. Recent applications of click chemistry for the functionalization of gold nanoparticles and their conversion to glyco-gold nanoparticles. Beilstein J Org Chem 2018; 14:11-24. [PMID: 29379576 PMCID: PMC5769080 DOI: 10.3762/bjoc.14.2] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/20/2017] [Indexed: 12/27/2022] Open
Abstract
Glycoscience, despite its myriad of challenges, promises to unravel the causes of, potential new detection methods for, and novel therapeutic strategies against, many disease states. In the last two decades, glyco-gold nanoparticles have emerged as one of several potential new tools for glycoscientists. Glyco-gold nanoparticles consist of the unique structural combination of a gold nanoparticle core and an outer-shell comprising multivalent presentation of carbohydrates. The combination of the distinctive physicochemical properties of the gold core and the biological function/activity of the carbohydrates makes glyco-gold nanoparticles a valuable tool in glycoscience. In this review we present recent advances made in the use of one type of click chemistry, namely the azide-alkyne Huisgen cycloaddition, for the functionalization of gold nanoparticles and their conversion to glyco-gold nanoparticles.
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Affiliation(s)
- Vivek Poonthiyil
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3/4, Kiel, 24098, Germany
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3/4, Kiel, 24098, Germany
| | - Vladimir B Golovko
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, 6140, New Zealand
| | - Antony J Fairbanks
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
- Biomolecular Interaction Centre, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
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11
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Alam MF, Laskar AA, Ahmed S, Shaida MA, Younus H. Colorimetric method for the detection of melamine using in-situ formed silver nanoparticles via tannic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:17-22. [PMID: 28432916 DOI: 10.1016/j.saa.2017.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 03/15/2017] [Accepted: 04/16/2017] [Indexed: 06/07/2023]
Abstract
Melamine toxicity has recently attracted worldwide attention as it causes renal failure and the death of humans and animals. Therefore, developing a simple, fast and sensitive method for the routine detection of melamine is the need of the hour. Herein, we have developed a selective colorimetric method for the detection of melamine in milk samples based upon in-situ formation of silver nanoparticles (AgNPs) via tannic acid. The AgNPs thus formed were characterized by UV-Visible spectrophotometer, transmission electron microscope (TEM), zetasizer and dynamic light scattering (DLS). The AgNPs were used to detect melamine under in vitro condition and in raw milk spiked with melamine. Under optimal conditions, melamine could be selectively detected in vitro within the concentration range of 0.05-1.4μM with a limit of detection (LOD) of 0.01μM, which is lower than the strictest melamine safety requirement of 1ppm. In spiked raw milk, the recovery percentage range was 99.5-106.5% for liquid milk and 98.5-105.5% for powdered milk. The present method shows extreme selectivity with no significant interference with other substances like urea, glucose, glycine, ascorbic acid etc. This assay method does not utilize organic cosolvents, enzymatic reactions, light sensitive dye molecules and sophisticated instrumentation, thereby overcoming some of the limitations of the other conventional methods.
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Affiliation(s)
- Md Fazle Alam
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Amaj Ahmed Laskar
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Shahbaz Ahmed
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Azfar Shaida
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
| | - Hina Younus
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India.
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12
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Abstract
Colorimetric detection of target analytes with high specificity and sensitivity is of fundamental importance to clinical and personalized point-of-care diagnostics. Because of their extraordinary optical properties, plasmonic nanomaterials have been introduced into colorimetric sensing systems, which provide significantly improved sensitivity in various biosensing applications. Here we review the recent progress on these plasmonic nanoparticles-based colorimetric nanosensors for ultrasensitive molecular diagnostics. According to their different colorimetric signal generation mechanisms, these plasmonic nanosensors are classified into two categories: (1) interparticle distance-dependent colorimetric assay based on target-induced forming cross-linking assembly/aggregate of plasmonic nanoparticles; and (2) size/morphology-dependent colorimetric assay by target-controlled growth/etching of the plasmonic nanoparticles. The sensing fundamentals and cutting-edge applications will be provided for each of them, particularly focusing on signal generation and/or amplification mechanisms that realize ultrasensitive molecular detection. Finally, we also discuss the challenge and give our future perspective in this emerging field.
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Affiliation(s)
- Longhua Tang
- State
Key Laboratory of Modern Optical Instrumentation, College of Optical
Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jinghong Li
- Department
of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and
Chemical Biology, Tsinghua University, Beijing 100084, China
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13
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Colorimetric sensors for rapid detection of various analytes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:1231-1245. [PMID: 28575962 DOI: 10.1016/j.msec.2017.05.018] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 03/23/2017] [Accepted: 05/04/2017] [Indexed: 01/14/2023]
Abstract
Sensor technology for the rapid detection of the analytes with high sensitivity and selectivity has several challenges. Despite the challenges, colorimetric sensors have been widely accepted for its high sensitive and selective response towards various analytes. In this review, colorimetric sensors for the detection of biomolecules like protein, DNA, pathogen and chemical compounds like heavy metal ions, toxic gases and organic compounds have been elaborately discussed. The visible sensing mechanism based on Surface Plasmon Resonance (SPR) using metal nanoparticles like Au, Ag, thin film interference using SiO2 and colorimetric array-based technique have been highlighted. The optical property of metal nanoparticles enables a visual color change during its interaction with the analytes owing to the dispersion and aggregation of nanoparticles. Recently, colorimetric changes using silica substrate for detection of protein and small molecules by thin film interference as a visible sensing mechanism has been developed without the usage of fluorescent or radioisotopes labels. Multilayer of biomaterials were used as a platform where reflection and interference of scattering light occur due to which color change happens leading to rapid sensing. Colorimetric array-based technique for the detection of organic compounds using chemoresponsive dyes has also been focused wherein the interaction of the analytes with the substrate coated with chemoresponsive dyes gives colorimetric change.
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14
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Zhang Z, Schepens B, Nuhn L, Saelens X, Schotsaert M, Callewaert N, De Rycke R, Zhang Q, Moins S, Benali S, Mespouille L, Hoogenboom R, De Geest BG. Influenza-binding sialylated polymer coated gold nanoparticles prepared via RAFT polymerization and reductive amination. Chem Commun (Camb) 2016; 52:3352-5. [PMID: 26823186 DOI: 10.1039/c6cc00501b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a straightforward strategy to fabricate bioactive glycosylated gold nanoparticles via a combination of RAFT polymerization, carbohydrate ligation through reductive amination and thiol-gold self-assembly. This approach is used for the design of gold nanoparticles decorated with the complex sialylated glycan Neu5Ac-α-2-6-Gal, and we demonstrate multivalent and specific recognition between the nanoparticles, lectins and hemagglutinin on the surface of the influenza virus.
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Affiliation(s)
- Z Zhang
- Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - B Schepens
- Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, 9052 Zwijnaarde, Belgium and Inflammation Research Center, VIB, Technologiepark 927, 9052 Zwijnaarde, Belgium
| | - L Nuhn
- Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - X Saelens
- Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, 9052 Zwijnaarde, Belgium and Inflammation Research Center, VIB, Technologiepark 927, 9052 Zwijnaarde, Belgium
| | - M Schotsaert
- Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, 9052 Zwijnaarde, Belgium and Inflammation Research Center, VIB, Technologiepark 927, 9052 Zwijnaarde, Belgium
| | - N Callewaert
- Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, 9052 Zwijnaarde, Belgium and Inflammation Research Center, VIB, Technologiepark 927, 9052 Zwijnaarde, Belgium
| | - R De Rycke
- Department of Biomedical Molecular Biology, Ghent University, Technologiepark 927, 9052 Zwijnaarde, Belgium and Inflammation Research Center, VIB, Technologiepark 927, 9052 Zwijnaarde, Belgium
| | - Q Zhang
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Krijgslaan 281, 9000 Ghent, Belgium
| | - S Moins
- Laboratory of Polymeric & Composite Materials, Ctr Innovat & Res Mat & Polymers (CIRMAP), Material Res Inst. and Health Res. Inst., University of Mons, B-7000 Mons, Belgium
| | - S Benali
- Laboratory of Polymeric & Composite Materials, Ctr Innovat & Res Mat & Polymers (CIRMAP), Material Res Inst. and Health Res. Inst., University of Mons, B-7000 Mons, Belgium
| | - L Mespouille
- Laboratory of Polymeric & Composite Materials, Ctr Innovat & Res Mat & Polymers (CIRMAP), Material Res Inst. and Health Res. Inst., University of Mons, B-7000 Mons, Belgium
| | - R Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Krijgslaan 281, 9000 Ghent, Belgium
| | - B G De Geest
- Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
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15
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Srikar R, Suresh D, Saranathan S, Zambre A, Kannan R. Three-Dimensional Nanocomposites: Fluidics Driven Assembly of Metal Nanoparticles on Protein Nanostructures and Their Cell-Line-Dependent Intracellular Trafficking Pattern. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4877-4885. [PMID: 27088307 DOI: 10.1021/acs.langmuir.6b00911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three-dimensional nanocomposites prepared using two different families of nanomaterials holds significant relevance pertaining to biological applications. However, integration of the two distinct nanomaterials with precision to control the overall compositional homogeneity of the resulting 3D nanocomposite is a synthetic challenge. Conventional reactions result in nanocomposites with heterogeneous composition and render useless. To address this challenge, we have developed a fluidics-mediated process for controlling the interaction of nanoparticles to yield a compositional uniform multidimensional nanoparticle; as an example, we demonstrated the integration of gold nanoparticles on gelatin nanoparticles. The composition of the nanocomposite is controlled by reacting predetermined number of gold nanoparticles to a known number of thiolated gelatin nanoparticles at any given time within a defined cross-sectional area. Using the fluidics process, we developed nanocomposites of different composition: [gelatin nanoparticles-(gold nanoparticles)x] where xaverage = 2, 12, or 25. The nanocomposites were further surface conjugated with organic molecules such as fluorescent dye or polyethylene glycol (PEG) molecules. To study the biological behavior of nanocomposite, we investigated the cellular internalization and trafficking characteristics of nanocomposites in two human cancer cell lines. The nanocomposites exhibited a three-stage cellular release mechanism that enables the translocation of gold nanoparticles within various cellular compartments. In summary, the three-dimensional nanocomposite serves as a novel platform for developing well-defined protein-metal nanocomposites for potential drug delivery, sensory, and molecular imaging applications.
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Affiliation(s)
- R Srikar
- Departments of †Radiology, ‡Bioengineering, and §International Center for Nano/Micro Systems and Nanotechnlogy, University of Missouri , Columbia, Missouri 65212, United States
| | - Dhananjay Suresh
- Departments of †Radiology, ‡Bioengineering, and §International Center for Nano/Micro Systems and Nanotechnlogy, University of Missouri , Columbia, Missouri 65212, United States
| | - Sandhya Saranathan
- Departments of †Radiology, ‡Bioengineering, and §International Center for Nano/Micro Systems and Nanotechnlogy, University of Missouri , Columbia, Missouri 65212, United States
| | - Ajit Zambre
- Departments of †Radiology, ‡Bioengineering, and §International Center for Nano/Micro Systems and Nanotechnlogy, University of Missouri , Columbia, Missouri 65212, United States
| | - Raghuraman Kannan
- Departments of †Radiology, ‡Bioengineering, and §International Center for Nano/Micro Systems and Nanotechnlogy, University of Missouri , Columbia, Missouri 65212, United States
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16
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Poonthiyil V, Golovko VB, Fairbanks AJ. Size-optimized galactose-capped gold nanoparticles for the colorimetric detection of heat-labile enterotoxin at nanomolar concentrations. Org Biomol Chem 2016; 13:5215-23. [PMID: 25853438 DOI: 10.1039/c5ob00447k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a galactose-capped gold nanoparticle-based colorimetric sensor for the detection of the lectin heat-labile enterotoxin is reported. Heat-labile enterotoxin is one of the pathogenic agents responsible for the intestinal disease called 'traveller's diarrhoea'. By means of specific interaction between galactose moieties attached to the surface of gold nanoparticles and receptors on the B-subunit of heat-labile enterotoxin (LTB), the gold nanoparticles reported here act as an efficient colorimetric sensor, which can detect the toxin at nanomolar concentrations. The effect of gold nanoparticle size on the detection sensitivity was investigated in detail. Amongst the various sizes of gold nanoparticles studied (2, 7, 12, and 20 nm), the 12 nm sized gold nanoparticles were found to be the most efficient, with a minimum heat-labile enterotoxin detection concentration of 100 nM. The red to purple colour change of the gold nanoparticle solution occurred within two minutes, indicating rapid toxin sensing.
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Affiliation(s)
- Vivek Poonthiyil
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand.
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17
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Wang X, Xu J, Wang Y, Wang F, Chen Y. A universal strategy for direct immobilization of intact bioactivity-conserved carbohydrates on gold nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra16511g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbohydrate-functioned gold nanoparticles have been highlighted for sensing complicated carbohydrates but their performance is far from ideal due to the lack of bioaffinity-conserved ways to function the particles with intact carbohydrates.
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Affiliation(s)
- Xiao Wang
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Jiying Xu
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Yuanyuan Wang
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Fuyi Wang
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Yi Chen
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
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18
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Poonthiyil V, Nagesh PT, Husain M, Golovko VB, Fairbanks AJ. Gold Nanoparticles Decorated with Sialic Acid Terminated Bi-antennary N-Glycans for the Detection of Influenza Virus at Nanomolar Concentrations. ChemistryOpen 2015; 4:708-16. [PMID: 27308196 PMCID: PMC4906500 DOI: 10.1002/open.201500109] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Indexed: 01/18/2023] Open
Abstract
Gold nanoparticles decorated with full-length sialic acid terminated complex bi-antennary N-glycans, synthesized with glycans isolated from egg yolk, were used as a sensor for the detection of both recombinant hemagglutinin (HA) and whole influenza A virus particles of the H1N1 subtype. Nanoparticle aggregation was induced by interaction between the sialic acid termini of the glycans attached to gold and the multivalent sialic acid binding sites of HA. Both dynamic light scattering (DLS) and UV/Vis spectroscopy demonstrated the efficiency of the sensor, which could detect viral HA at nanomolar concentrations and revealed a linear relationship between the extent of nanoparticle aggregation and the concentration of HA. UV/Vis studies also showed that these nanoparticles can selectively detect an influenza A virus strain that preferentially binds sialic acid terminated glycans with α(2→6) linkages over a strain that prefers glycans with terminal α(2→3)-linked sialic acids.
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Affiliation(s)
- Vivek Poonthiyil
- Department of ChemistryUniversity of CanterburyPrivate Bag 4800Christchurch8140New Zealand
- The MacDiarmid Institute for Advanced Materials and NanotechnologyWellington6140New Zealand
| | - Prashanth T. Nagesh
- Department of Microbiology and ImmunologyUniversity of OtagoPO Box 56Dunedin9054New Zealand
| | - Matloob Husain
- Department of Microbiology and ImmunologyUniversity of OtagoPO Box 56Dunedin9054New Zealand
| | - Vladimir B. Golovko
- Department of ChemistryUniversity of CanterburyPrivate Bag 4800Christchurch8140New Zealand
- The MacDiarmid Institute for Advanced Materials and NanotechnologyWellington6140New Zealand
| | - Antony J. Fairbanks
- Department of ChemistryUniversity of CanterburyPrivate Bag 4800Christchurch8140New Zealand
- Biomolecular Interaction CentreUniversity of CanterburyPrivate Bag 4800Christchurch8140New Zealand
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19
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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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20
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Detection of heavy metals (Cu+2, Hg+2) by biosynthesized silver nanoparticles. APPLIED NANOSCIENCE 2015. [DOI: 10.1007/s13204-015-0452-4] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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22
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Manjumeena R, Duraibabu D, Rajamuthuramalingam T, Venkatesan R, Kalaichelvan PT. Highly responsive glutathione functionalized green AuNP probe for precise colorimetric detection of Cd2+ contamination in the environment. RSC Adv 2015. [DOI: 10.1039/c5ra12427a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Precise colorimetric detection of Cd2+ using a glutathione functionalized phytosynthesized AuNP probe provides an ecofriendly approach to heavy metal detection.
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23
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Wang SK, Cheng CM. Glycan-based diagnostic devices: current progress, challenges and perspectives. Chem Commun (Camb) 2015; 51:16750-62. [DOI: 10.1039/c5cc06876b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The development of glycan-based diagnostic devices is illustrated with recent examples from both carbohydrate recognition and device design aspects.
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Affiliation(s)
- Sheng-Kai Wang
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 300
- Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering
- National Tsing Hua University
- Taiwan
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24
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Cai HH, Yu X, Dong H, Cai J, Yang PH. Visual and absorption spectroscopic detections of melamine with 3-mercaptopriopionic acid-functionalized gold nanoparticles: A synergistic strategy induced nanoparticle aggregates. J FOOD ENG 2014. [DOI: 10.1016/j.jfoodeng.2014.04.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Matsuura K, Ueno G, Fujita S. Self-assembled artificial viral capsid decorated with gold nanoparticles. Polym J 2014. [DOI: 10.1038/pj.2014.99] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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26
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Dal Bó AG, Soldi V, Giacomelli FC, Travelet C, Borsali R, Fort S. Synthesis, micellization and lectin binding of new glycosurfactants. Carbohydr Res 2014; 397:31-6. [DOI: 10.1016/j.carres.2014.07.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 07/26/2014] [Accepted: 07/28/2014] [Indexed: 01/04/2023]
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27
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Colorimetric and visual determination of dicyandiamide using gallic acid-capped gold nanoparticles. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1346-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Colorimetric and visual determination of total nereistoxin-related insecticides by exploiting a nereistoxin-driven aggregation of gold nanoparticles. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1347-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Vonnemann J, Sieben C, Wolff C, Ludwig K, Böttcher C, Herrmann A, Haag R. Virus inhibition induced by polyvalent nanoparticles of different sizes. NANOSCALE 2014; 6:2353-60. [PMID: 24430614 DOI: 10.1039/c3nr04449a] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The development of antiviral agents is one of the major challenges in medical science. So far, small monovalent molecular drugs that inhibit the late steps in the viral replication cycle, i.e., virus budding, have not worked well which emphasizes the need for alternative approaches. Polyvalently presented viral receptors, however, show potential as good inhibitors of virus-cell binding, which is the first step in the viral infection cycle. By gradually increasing the size of ligand functionalized gold nanoparticles, up to virus-like dimensions, we are now able to quantify the polyvalent enhancement of virus-cell binding inhibition and to identify varying mechanisms of virus inhibition with different efficacies: by employing a new binding assay we found that surface area-normalized polysulfated gold nanoparticles of diameters equal to and larger than the virus diameter (>50 nm) more efficiently inhibit the binding of vesicular stomatitis virus (VSV) to cells than smaller particles. On a per particle basis, larger sized gold nanoparticles were surprisingly shown to inhibit the viral infection up to two orders of magnitude more efficiently than smaller particles, which suggests different mechanisms of virus inhibition. Based on complementary electron microscopic data, we noticed that larger gold nanoparticles act as efficient cross-linkers between virions, whereas smaller gold nanoparticles decorate the surface of individual virus particles. Our systematic study accentuates the need for the design of biodegradable, virus-sized inhibitors capitalizing on polyvalent binding.
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Affiliation(s)
- Jonathan Vonnemann
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany.
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30
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Kannan P, Los M, Los JM, Niedziolka-Jonsson J. T7 bacteriophage induced changes of gold nanoparticle morphology: biopolymer capped gold nanoparticles as versatile probes for sensitive plasmonic biosensors. Analyst 2014; 139:3563-71. [DOI: 10.1039/c3an02272b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The morphological changes of gold nanoparticles induced by T7 virus (bacteriophage) and the determination of its femtomolar concentration by a plasmonic method are presented.
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Affiliation(s)
- Palanisamy Kannan
- Institute of Physical Chemistry Polish Academy of Sciences
- 01-224 Warsaw, Poland
| | - Marcin Los
- Institute of Physical Chemistry Polish Academy of Sciences
- 01-224 Warsaw, Poland
- Department of Molecular Biology
- University of Gdansk
- 80-308 Gdansk, Poland
| | - Joanna M. Los
- Department of Molecular Biology
- University of Gdansk
- 80-308 Gdansk, Poland
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31
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Aljabali AAA, Evans DJ. Polyelectrolyte-modified cowpea mosaic virus for the synthesis of gold nanoparticles. Methods Mol Biol 2014; 1108:97-103. [PMID: 24243243 DOI: 10.1007/978-1-62703-751-8_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polyelectrolyte surface-modified cowpea mosaic virus (CPMV) can be used for the templated synthesis of narrowly dispersed gold nanoparticles. Cationic polyelectrolyte, poly(allylamine) hydrochloride, is electrostatically bound to the external surface of the virus capsid. The polyelectrolyte-coated CPMV promotes adsorption of aqueous gold hydroxide anionic species, prepared from gold(III) chloride and potassium carbonate, that are easily reduced to form CPMV-templated gold nanoparticles. The process is simple and environmentally benign using only water as solvent at ambient temperature.
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32
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Hemmateenejad B, Dorostkar S, Shakerizadeh-Shirazi F, Shamsipur M. pH-independent optical sensing of heparin based on ionic liquid-capped gold nanoparticles. Analyst 2013; 138:4830-7. [PMID: 23826612 DOI: 10.1039/c3an36895e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A simple pH-independent optical method for the sensing of heparin, as a biomedically important polyionic drug, based on aggregation of gold nanoparticles (AuNPs) is described. The polyanionic heparin induces the aggregation of positively charged ionic liquid stabilized AuNPs, which results in a shift in the surface plasmon band and a consequent color change of the AuNPs from red to blue. The color change was monitored using UV-vis spectrophotometry and image analysis methods. The aggregation was confirmed by transmission electron microscopic measurements. The degree of aggregation was found to be proportional to the concentration of the added heparin, allowing its quantitative detection. The change in the absorbance and color-value has been used to monitor the concentration of heparin. This optical method can quantify heparin as low as 0.010 μg mL(-1) and the calibration is linear for a wide range of concentration.
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33
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Lee C, Gaston MA, Weiss AA, Zhang P. Colorimetric viral detection based on sialic acid stabilized gold nanoparticles. Biosens Bioelectron 2013; 42:236-41. [PMID: 23208092 PMCID: PMC3964789 DOI: 10.1016/j.bios.2012.10.067] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 10/05/2012] [Accepted: 10/19/2012] [Indexed: 01/04/2023]
Abstract
Sialic acid reduced and stabilized gold nanoparticles (d=20.1±1.8 nm) were synthesized by a simple one-pot, green method without chemically modifying sialic acid for colorimetric detection of influenza virus. The gold nanoparticles showed target-specific aggregation with viral particles via hemagglutinin-sialic acid binding. A linear correlation was observed between the change in optical density and dilution of chemically inactivated influenza B/Victoria and influenza B/Yamagata. Virus dilution (hemagglutination assay titer, 512) of 0.156 vol% was readily detected. The upper limit of the linearity can be extended with the use of more sialic acid-gold nanoparticles.
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Affiliation(s)
- Changwon Lee
- Department of Chemistry, Biochemistry & Microbiology, University of Cincinnati, Cincinnati, OH 45221, United States
| | - Marsha A. Gaston
- Department of Molecular Genetics, Biochemistry & Microbiology, University of Cincinnati, Cincinnati, OH 45221, United States
| | - Alison A. Weiss
- Department of Molecular Genetics, Biochemistry & Microbiology, University of Cincinnati, Cincinnati, OH 45221, United States
| | - Peng Zhang
- Department of Chemistry, Biochemistry & Microbiology, University of Cincinnati, Cincinnati, OH 45221, United States
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34
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Zhou Y, Wang P, Su X, Zhao H, He Y. Colorimetric detection of ractopamine and salbutamol using gold nanoparticles functionalized with melamine as a probe. Talanta 2013; 112:20-5. [PMID: 23708531 DOI: 10.1016/j.talanta.2013.03.033] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/14/2013] [Accepted: 03/15/2013] [Indexed: 12/20/2022]
Abstract
A highly selective and sensitive method is developed for colorimetric detection of ractopamine and salbutamol using gold nanoparticles (AuNPs) functionalized with melamine (MA), respectively. The presence of these β-agonists induces the aggregation of gold nanoparticles through hydrogen-bonding interaction that was accompanied by a distinct change in color and optical properties, which could be monitored by a UV-vis spectrophotometer or even naked eyes. This process caused a significant decrease in the absorbance ratio (A670 nm/A520 nm) of melamine-gold nanoparticles (MA-AuNPs), and the color changed from wine red to blue. The systems exhibited a wide liner range, from 1×10(-10)M to 5×10(-7)mol/L with a correlation coefficient of 0.995 for ractopamine, and 1×10(-10)M to 1×10(-5)mol/L with a correlation coefficient of 0.996 for salbutamol, with measuring the absorbance ratio (A670 nm/A520 nm). The detection limit of these β-agonists is as low as 1×10(-11)mol/L. Particularly, the developed method has been applied to the analysis of real swine feed samples and has achieved satisfactory results.
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Affiliation(s)
- Ying Zhou
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China
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35
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Li F, Chen H, Zhang Y, Chen Z, Zhang ZP, Zhang XE, Wang Q. Three-dimensional gold nanoparticle clusters with tunable cores templated by a viral protein scaffold. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:3832-3838. [PMID: 22911966 DOI: 10.1002/smll.201201047] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 07/06/2012] [Indexed: 05/28/2023]
Abstract
Assembling nanoparticles (NPs) into ordered architectures remains a challenge in the field of nanotechnology. Templated strategies have been widely utilized for NP assembly. As typical biological nanostructures, virus-based NPs (VNPs) have shown great promise in templating NP assembly. Here it is illustrated that the VNP of simian virus 40 (SV40) is a powerful scaffold in directing the assembly of 3D hybrid nanoarchitectures with one NP encapsulated inside as a core and a cluster of gold NPs (AuNPs) on the outer surface of the SV40 VNP as a shell, in which the core NPs can be CdSe/ZnS quantum dots (QDs), Ag(2)S QDs, or AuNPs. The assembling of AuNPs onto the SV40 VNP surface is determined by the interactions between the AuNPs and the amine groups on the outer surface of SV40 VNPs. It is expected that the VNP guided 3D hybrid nanoarchitectures provide ideal models for NP interaction studies and open new opportunities for integrating various functionalities in NP assemblies.
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Affiliation(s)
- Feng Li
- Division of Nanobiomedicine and i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
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36
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Label-free colorimetric detection of picomolar amounts of hydrazine using a gold nanoparticle-based assay. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0186-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Highly sensitive and selective colorimetric detection of cartap residue in agricultural products. Talanta 2012; 101:382-7. [DOI: 10.1016/j.talanta.2012.09.045] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 09/20/2012] [Accepted: 09/22/2012] [Indexed: 01/31/2023]
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38
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Fasting C, Schalley CA, Weber M, Seitz O, Hecht S, Koksch B, Dernedde J, Graf C, Knapp EW, Haag R. Multivalenz als chemisches Organisations- und Wirkprinzip. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201114] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Fasting C, Schalley CA, Weber M, Seitz O, Hecht S, Koksch B, Dernedde J, Graf C, Knapp EW, Haag R. Multivalency as a Chemical Organization and Action Principle. Angew Chem Int Ed Engl 2012; 51:10472-98. [DOI: 10.1002/anie.201201114] [Citation(s) in RCA: 688] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Indexed: 12/26/2022]
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40
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Li MJ, Liu X, Nie MJ, Wu ZZ, Yi CQ, Chen GN, Yam VWW. New Rhenium(I) Complexes: Synthesis, Photophysics, Cytotoxicity, and Functionalization of Gold Nanoparticles for Sensing of Esterase. Organometallics 2012. [DOI: 10.1021/om300256u] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mei-Jin Li
- Key Laboratory of Analysis and
Detection Technology for Food Safety (Ministry of Education and Fujian
Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Xing Liu
- Key Laboratory of Analysis and
Detection Technology for Food Safety (Ministry of Education and Fujian
Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Mei-Juan Nie
- Key Laboratory of Analysis and
Detection Technology for Food Safety (Ministry of Education and Fujian
Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Zhao-Zhen Wu
- Key Laboratory of Analysis and
Detection Technology for Food Safety (Ministry of Education and Fujian
Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Chang-Qing Yi
- School of Engineering, Sun Yat-Sen University, Guangzhou 510275, People's
Republic of China
| | - Guo-Nan Chen
- Key Laboratory of Analysis and
Detection Technology for Food Safety (Ministry of Education and Fujian
Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong, Pokfulam
Road, Hong Kong SAR, People's Republic of China
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41
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Block O, Mitra A, Novotny L, Dykes C. A rapid label-free method for quantitation of human immunodeficiency virus type-1 particles by nanospectroscopy. J Virol Methods 2012; 182:70-5. [PMID: 22460038 PMCID: PMC3334412 DOI: 10.1016/j.jviromet.2012.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 03/06/2012] [Accepted: 03/12/2012] [Indexed: 02/08/2023]
Abstract
Infection of cells with human immunodeficiency virus type-1 (HIV-1) results in the production of both infectious and non-infectious virions. At present, several assays are available for the quantitation of virus particles based on the presence of either viral capsid protein or nucleic acid. However, the ability to detect the total number of virus particles, both infectious and non-infectious, has been an elusive goal that would advance the study of virus assembly and egress. A rapid optical detection scheme for real-time label-free quantitation of HIV-1 virus particles was developed. Virions produced in cell cultures transfected transiently were evaluated with a nanospectroscopic assay. Quantitation with the optical detection scheme correlated with routine conventional assays. Nanospectroscopy can be used for the detection of both infectious and non-infectious, wild type and mutant strains of HIV-1 in solution at concentrations as low as 7×10(10)particles/ml, requiring volumes as small as 2 μl per assay, and in significantly less time than standard techniques. This assay provides a rapid, reliable system for quantifying virus particles in solution and could be applied to the study of viral particle production in cell culture.
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Affiliation(s)
- Olivia Block
- University of Rochester, School of Medicine and Dentistry, Rochester, NY
| | | | - Lukas Novotny
- Institute of Optics, University of Rochester, Rochester, NY
- Department of Physics and Astronomy, Rochester, NY
| | - Carrie Dykes
- University of Rochester, School of Medicine and Dentistry, Rochester, NY
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42
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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: 2755] [Impact Index Per Article: 229.6] [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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43
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Sekiguchi S, Niikura K, Matsuo Y, Ijiro K. Hydrophilic gold nanoparticles adaptable for hydrophobic solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5503-5507. [PMID: 22428570 DOI: 10.1021/la300299x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Surface ligand molecules enabling gold nanoparticles to disperse in both polar and nonpolar solvents through changes in conformation are presented. Gold nanoparticles coated with alkyl-head-capped PEG derivatives were initially well dispersed in water through exposure of the PEG residue (bent form). When chloroform was added to the aqueous solution of gold nanoparticles, the gold nanoparticles were transferred from an aqueous to a chloroform phase through exposure of the alkyl-head residue (straight form). The conformational change (bent to straight form) of immobilized ligands in response to the polarity of the solvents was supported by NMR analyses and water contact angles.
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Affiliation(s)
- Shota Sekiguchi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-Ku, Sapporo, Japan
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44
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Wang J, Gao J, Liu D, Han D, Wang Z. Phenylboronic acid functionalized gold nanoparticles for highly sensitive detection of Staphylococcus aureus. NANOSCALE 2012; 4:451-4. [PMID: 22159893 DOI: 10.1039/c2nr11657j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Herein, we report a phenylboronic acid functionalized gold nanoparticle (GNP)-based colorimetric assay for rapid detection of Staphylococcus aureus (S. aureus) with high sensitivity. In this approach, GNPs can bind to S. aureus by the reaction of phenylboronic acid with the cis-diol configuration in glycans on the bacterial surface, providing a colorimetric readout of the binding event. Using this strategy, we have been able to quantify S. aureus at a concentration of 50 cells per mL (three times the standard deviation divided by the slope of the working curve) in aqueous solution.
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Affiliation(s)
- Jine Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
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45
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Dal Bó AG, Soldi V, Giacomelli FC, Travelet C, Jean B, Pignot-Paintrand I, Borsali R, Fort S. Self-assembly of amphiphilic glycoconjugates into lectin-adhesive nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1418-1426. [PMID: 22171924 DOI: 10.1021/la204388h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This work describes the synthesis and self-assembly of carbohydrate-clicked rod-coil amphiphilic systems. Copper-catalyzed Huisgen cycloaddition was efficiently employed to functionalize the hydrophilic extremity of PEG-b-tetra(p-phenylene) conjugates by lactose and N-acetyl-glucosamine ligands. The resulting amphiphilic systems spontaneously self-assembled into nanoparticles when dissolved in aqueous media, as evidenced by dynamic light scattering (DLS), transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS). The formation of highly monodisperse micelles having a mean diameter of 10 nm was observed for systems containing a PEG 900 core, and a decrease in the hydrophilic moiety (PEG 600) led to the formation of vesicles with a broader size distribution. The presence of carbohydrate residues on the surfaces of the micelles and their ability to establish specific interactions with wheat germ agglutinin (WGA) and peanut agglutinin (PNA) were further highlighted by light-scattering measurements, thus confirming the attractive applications of such sugar micelles in biosensor devices.
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Affiliation(s)
- Alexandre G Dal Bó
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP 53, F-38041 Grenoble Cedex 9, France
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46
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Nagakawa K, Niikura K, Suzuki T, Matsuo Y, Igarashi M, Sawa H, Ijiro K. Virus Capsid Coating of Gold Nanoparticles via Cysteine–Au Interactions and Their Effective Cellular Uptakes. CHEM LETT 2012. [DOI: 10.1246/cl.2012.113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Keita Nagakawa
- Department of Chemistry, Graduate School of Science, Hokkaido University
| | - Kenichi Niikura
- Research Institute for Electronic Science, Hokkaido University
| | - Tadaki Suzuki
- Research Center for Zoonosis Control and Global COE program, Hokkaido University
| | - Yasutaka Matsuo
- Research Institute for Electronic Science, Hokkaido University
| | - Manabu Igarashi
- Research Center for Zoonosis Control and Global COE program, Hokkaido University
| | - Hirofumi Sawa
- Research Center for Zoonosis Control and Global COE program, Hokkaido University
| | - Kuniharu Ijiro
- Research Institute for Electronic Science, Hokkaido University
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47
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Ping H, Zhang M, Li H, Li S, Chen Q, Sun C, Zhang T. Visual detection of melamine in raw milk by label-free silver nanoparticles. Food Control 2012. [DOI: 10.1016/j.foodcont.2011.07.009] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Yuan Y, Zhang J, Zhang H, Yang X. Silver nanoparticle based label-free colorimetric immunosensor for rapid detection of neurogenin 1. Analyst 2011; 137:496-501. [PMID: 22114758 DOI: 10.1039/c1an15875a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Neurogenin 1 (ngn1), with the functions of controlling the differentiation of neurons, determining specific neuronal subtype, and inhibiting glial differentiation, is quantitatively detected for the first time. By using specifically modified silver nanoparticles (AgNP) as the signaling element, a label-free, rapid and sensitive colorimetric immunoassay for the synthetic peptide fragment of ngn1 (amino acid sequence: AQDDEQERRRRRGRTR) is reported. The detection procedure is based on an anti-aggregation mechanism, by which ngn1 inhibits the aggregation of the probe in the presence of salt (NaClO(4)). The anti-ngn1 antibody conjugated AgNP (denoted as AgNP-Ab) is negatively charged, and mono-binding of the like-charged ngn1 to the probe will increase the surface charge density, hence enhancing the interparticular electrostatic repulsion. Along with the increase of ngn1 concentration, the color of the solution varies from red to yellow, thereby developing a feasible approach for the detection of ngn1. Using a UV/vis spectrophotometer, this assay exhibits a linear response range of two orders of magnitude, from 50 to 800 ng mL(-1), and a detection limit of 30 ng mL(-1). On the basis of these qualities, the antibody-conjugated AgNP may become a useful tool for point-of-care diagnosis of ngn1 and such a method offers a new insight on the detection of the analogous antigen fragment as well.
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Affiliation(s)
- Yue Yuan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China
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49
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Svarovsky SA, Gonzalez-Moa MJ. High-throughput platform for rapid deployment of antimicrobial agents. ACS COMBINATORIAL SCIENCE 2011; 13:634-8. [PMID: 21923164 DOI: 10.1021/co200088c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new approach to conducting bacterial binding assays by using an addressable high density random sequence peptide microarray is described. When bacterial binding is carried out in the presence of a competing excess of corresponding bacterial lipopolysaccharide (LPS), most of the observed bacterial binding is inhibited, suggesting that LPS is the major target of the bacterial binding peptides. Importantly, the amino acid composition of the selected peptides closely resembles the composition of natural antimicrobial peptides. Conjugation of selected peptides to polyvalent nanoparticle scaffold yields constructs that show potent antibacterial agglutination activities. The system is general enough to potentially create antimicrobial agents to virtually any pathogen.
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Affiliation(s)
- Sergei A. Svarovsky
- Center for Innovations in Medicine at the Biodesign Institute, Arizona State University, 1001 South McAllister Avenue, Tempe, Arizona 85287-5901, United States
| | - Maria J. Gonzalez-Moa
- Center for Innovations in Medicine at the Biodesign Institute, Arizona State University, 1001 South McAllister Avenue, Tempe, Arizona 85287-5901, United States
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50
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Li H, Guo J, Ping H, Liu L, Zhang M, Guan F, Sun C, Zhang Q. Visual detection of organophosphorus pesticides represented by mathamidophos using Au nanoparticles as colorimetric probe. Talanta 2011; 87:93-9. [PMID: 22099654 DOI: 10.1016/j.talanta.2011.09.046] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 09/09/2011] [Accepted: 09/15/2011] [Indexed: 11/27/2022]
Abstract
With citrate-coated Au nanoparticles as colorimetric probe, a novel visual method for rapid assay of organophosphorus pesticides has been developed. The assay principle is based on catalytic hydrolysis of acetylthiocholine into thiocholine by acetylcholinesterase, which induces the aggregation of Au nanoparticles and the color change from claret-red to purple or even grey. The original plasmon absorption of Au nanoparticles at 522 nm decreases, and simultaneously, a new absorption band appears at 675 nm. The irreversible inhibition of organophosphorus pesticides on acetylcholinesterase prevents aggregation of Au nanoparticles. Under optimum conditions, the absorbance at 522 nm of Au nanoparticles is related linearly to the concentration of mathamidophos in the range of 0.02-1.42 μg/mL with a detection limit of 1.40 ng/mL. This colorimetric method has been successfully utilized to detect mathamidophos in vegetables with satisfactory results. The proposed colorimetric assay exhibits good reproducibility and accuracy, providing a simple and rapid method for the analysis of organophosphorus pesticides.
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Affiliation(s)
- Hongkun Li
- Department of Food Quality and Safety, College of Quartermaster Technology, Jilin University, Changchun 130062, PR China
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