1
|
Liu Z, Wang Z, Guckel J, Akbarian Z, Seifert TJ, Park D, Schlickum U, Stosch R, Etzkorn M. Controlling Nanoparticle Distance by On-Surface DNA-Origami Folding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310955. [PMID: 38634220 DOI: 10.1002/smll.202310955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/11/2024] [Indexed: 04/19/2024]
Abstract
DNA origami is a flexible platform for the precise organization of nano-objects, enabling numerous applications from biomedicine to nano-photonics. Its huge potential stems from its high flexibility that allows customized structures to meet specific requirements. The ability to generate diverse final structures from a common base by folding significantly enhances design variety and is regularly occurring in liquid. This study describes a novel approach that combines top-down lithography with bottom-up DNA origami techniques to control folding of the DNA origami with the adsorption on pre-patterned surfaces. Using this approach, tunable plasmonic dimer nano-arrays are fabricated on a silicon surface. This involves employing electron beam lithography to create adsorption sites on the surface and utilizing self-organized adsorption of DNA origami functionalized with two gold nanoparticles (AuNPs). The desired folding of the DNA origami helices can be controlled by the size and shape of the adsorption sites. This approach can for example be used to tune the center-to-center distance of the AuNPs dimers on the origami template. To demonstrate this technique's efficiency, the Raman signal of dye molecules (carboxy tetramethylrhodamine, TAMRA) coated on the AuNPs surface are investigated. These findings highlight the potential of tunable DNA origami-based plasmonic nanostructures for many applications.
Collapse
Affiliation(s)
- Zhe Liu
- Institute of Applied Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Zunhao Wang
- Physikalisch-Technische Bundesanstalt, 38106, Braunschweig, Germany
| | - Jannik Guckel
- Physikalisch-Technische Bundesanstalt, 38106, Braunschweig, Germany
| | - Ziba Akbarian
- Institute of Applied Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Tim J Seifert
- Institute of Applied Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Daesung Park
- Physikalisch-Technische Bundesanstalt, 38106, Braunschweig, Germany
| | - Uta Schlickum
- Institute of Applied Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Rainer Stosch
- Physikalisch-Technische Bundesanstalt, 38106, Braunschweig, Germany
| | - Markus Etzkorn
- Institute of Applied Physics, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| |
Collapse
|
2
|
Kotelnikova PA, Iureva AM, Nikitin MP, Zvyagin AV, Deyev SM, Shipunova VO. Peroxidase-like activity of silver nanowires and its application for colorimetric detection of the antibiotic chloramphenicol. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
3
|
SERS-active Au@Ag core-shell nanorod (Au@AgNR) tags for ultrasensitive bacteria detection and antibiotic-susceptibility testing. Talanta 2020; 220:121397. [DOI: 10.1016/j.talanta.2020.121397] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 07/05/2020] [Accepted: 07/08/2020] [Indexed: 01/06/2023]
|
4
|
Smith M, Logan M, Bazley M, Blanchfield J, Stokes R, Blanco A, McGee R. A Semi-quantitative method for the detection of fentanyl using surface-enhanced Raman scattering (SERS) with a handheld Raman instrument. J Forensic Sci 2020; 66:505-519. [PMID: 33136303 DOI: 10.1111/1556-4029.14610] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/06/2020] [Accepted: 10/07/2020] [Indexed: 12/20/2022]
Abstract
A handheld, spatially offset Raman spectroscopy (SORS) system was successfully used to obtain Surface-enhanced Raman Scattering (SERS) spectra of fentanyl under simulated field conditions. A series of aqueous fentanyl solutions were prepared with commercially available gold nanoparticle solution, at concentrations ranging from 0.003 to 1697 μM. These SERS spectra were then used to generate two concentration calibration models (via a plot of peak area (1026 cm-1 ) versus concentration, and quantitative spectral decomposition using partial least squares (PLS1)). For both models, the relationship followed Langmuir adsorption and became non-linear at concentrations above ~0.2 μM, with a limit of detection (LOD) of approximately 3 nM. The same technique was successfully used to measure fentanyl in the presence of two common "cutting agents," heroin and glucose, at 1% and 2% fentanyl proportions (w/w). Fentanyl detection was successfully achieved, but mixture interference from the cutting agents prevented a calibration model being generated. Four fentanyl analogues were also investigated-butyrylfentanyl, furanylfentanyl, acetylfentanyl, and ocfentanyl. A concentration calibration model for each species was successfully generated, but differentiation from fentanyl proved more challenging, although several potential diagnostic peaks were identified. These results identified a pathway forward in using handheld equipment for the reliable detection of ultra-low concentrations of fentanyl and fentanyl analogues via SERS, even when mixed with diluents. However, quantitative detection is negatively impacted in the presence of heroin and glucose. This also provides a starting point for a SERS-based spectral library of fentanyl analogues, in combination with a range of different diluents.
Collapse
Affiliation(s)
- Matthew Smith
- Queensland Fire and Emergency Services, Research and Scientific Branch, Brisbane, Australia
| | - Mike Logan
- Queensland Fire and Emergency Services, Research and Scientific Branch, Brisbane, Australia
| | - Mikaela Bazley
- Chemistry Department, University of Queensland, St Lucia, Brisbane, Australia
| | - Joanne Blanchfield
- Chemistry Department, University of Queensland, St Lucia, Brisbane, Australia
| | - Robert Stokes
- Field Detection, Molecular Spectroscopy, Agilent Technologies UK Ltd, Oxford, UK
| | - Ana Blanco
- Field Detection, Molecular Spectroscopy, Agilent Technologies UK Ltd, Oxford, UK
| | - Rachel McGee
- Field Detection, Molecular Spectroscopy, Agilent Technologies UK Ltd, Oxford, UK
| |
Collapse
|
5
|
Chavada VD, Bhatt NM, Sanyal M, Shrivastav PS. Modulation of inner filter effect of non-conjugated silver nanoparticles on blue emitting ZnS quantum dots for the quantitation of betahistine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118575. [PMID: 32534429 DOI: 10.1016/j.saa.2020.118575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/14/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
A simple, reliable and efficient fluorescent probe has been developed for the detection and quantitation of betahistine using inner filter effect (IFE) of silver nanoparticles (AgNPs) on zinc sulphide (ZnS) quantum dots. The synthesized ZnS exhibited blue emission at 403 nm which was quenched upon mixing with AgNPs due to intensive localized surface plasmon resonance (LSPR) absorption at 401 nm. The presence of IFE was confirmed by UV-Visible and fluorescence spectroscopy, dynamic light scattering and transmission electron microscopy. Addition of betahistine caused aggregation of AgNPs as visualized by the change in colour of nano-suspension. The reduced absorption at LSPR resulted in inhibition of IFE leading to higher fluorescence intensities in the presence of betahistine. Parameters such as pH, incubation time and concentration of AgNPs were suitably optimized. The fluorescence signal (I - I0/I0) responded linearly for betahistine in the concentration range from 0.1 to 10 μM under the optimized experimental conditions. Due to the aggregation of AgNPs, a simple colorimetric approach was also studied for quantitation of betahistine in the range 1.0-20 μM. The limit of detection for fluorescence measurement and colorimetric approach was 0.02 μM and 0.23 μM, respectively. Further, the proposed method exhibited excellent selectivity towards betahistine in presence of several cations, biomolecules such as glucose, uric acid, creatinine, amino acids and several anti-vertigo medications. The method was applied to quantify betahistine from pharmaceutical products and results obtained were in good agreement with the claimed values. The proposed sensor can serve a low cost, selective, sensitive and a precise tool for routine quantitation of betahistine.
Collapse
Affiliation(s)
- Vijay D Chavada
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Nejal M Bhatt
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Mallika Sanyal
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad 380009, Gujarat, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
| |
Collapse
|
6
|
Afsharipour R, Dadfarnia S, Shabani AMH, Kazemi E. Design of a pseudo stir bar sorptive extraction using graphenized pencil lead as the base of the molecularly imprinted polymer for extraction of nabumetone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 238:118427. [PMID: 32388234 DOI: 10.1016/j.saa.2020.118427] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Molecularly imprinted polymer (MIP) was synthesized through the coprecipitation method on the graphene oxide anchored pencil lead as a substrate for the first time and applied as an efficient sorbent for pseudo stir bar sorptive extraction of nabumetone. The extracted analyte was determined by a novel spectrophotometric method based on the aggregation of silicate sol-gel stabilized silver nanoparticles in the presence of the analyte. The synthesized polymer was characterized using Fourier transform infrared spectroscopy and field emission scanning electron microscopy. Optimization of important parameters affecting the extraction efficiency was done using central composite design whereas the spectrophotometric method was optimized via one at a time variable. Under the optimal conditions, the calibration curve exhibited linearity in the concentration range of 1.5-20.0 μg L-1. A limit of detection of 0.20 μg L-1, an enhancement factor of 393 and relative standard deviations (at 10 μg L-1, n = 6) of 4.6% and 8.1% for intra- and inter-day analysis were obtained. The developed procedure was successfully utilized for the quantification of traces of nabumetone in tap water and biological samples with the complex matrix including human urine and serum.
Collapse
Affiliation(s)
- Roya Afsharipour
- Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran
| | | | | | - Elahe Kazemi
- Environmental and Bio-Analytical Laboratories, Department of Chemistry, Sharif University of Technology, Tehran, Iran
| |
Collapse
|
7
|
An analytical method to control the surface density and stability of DNA-gold nanoparticles for an optimized biosensor. Colloids Surf B Biointerfaces 2020; 187:110650. [DOI: 10.1016/j.colsurfb.2019.110650] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 12/17/2022]
|
8
|
Li Z, Yin Y. Stimuli-Responsive Optical Nanomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807061. [PMID: 30773717 DOI: 10.1002/adma.201807061] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/07/2018] [Indexed: 05/24/2023]
Abstract
Responsive optical nanomaterials that can sense and translate various external stimuli into optical signals, in the forms of observable changes in appearance and variations in spectral line shapes, are among the most active research topics in nanooptics. They are intensively exploited within the regimes of the four classic optical phenomena-diffraction in photonic crystals, absorption of plasmonic nanostructures, as well as color-switching systems, refraction of assembled birefringent nanostructures, and emission of photoluminescent nanomaterials and molecules. Herein, a comprehensive review of these research activities regarding the fundamental principles and practical strategies is provided. Starting with an overview of their substantial developments during the latest three decades, each subtopic discussion is led with fundamental theories that delineate the correlation between nanostructures and optical properties and the delicate research strategies are elaborated with specific attention focused on working principles and optical performances. The unique advantages and inherent limitations of each responsive optical nanoscale platform are summarized, accompanied by empirical criteria that should be met and perspectives on research opportunities where the developments of next-generation responsive optical nanomaterials might be directed.
Collapse
Affiliation(s)
- Zhiwei Li
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| |
Collapse
|
9
|
Electrochemiluminecence nanogears aptasensor based on MIL-53(Fe)@CdS for multiplexed detection of kanamycin and neomycin. Biosens Bioelectron 2019; 129:100-106. [PMID: 30685704 DOI: 10.1016/j.bios.2018.12.050] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/19/2018] [Accepted: 12/28/2018] [Indexed: 01/04/2023]
Abstract
A dual gears electrochemiluminecence (ECL) aptasensing strategy for multiple selective determination of kanamycin and neocycin was designed on the basis of the combination of kanamycin and neocycin induced dual gears conversion, the loading platform of metal-organic frameworks (MOFs), surface plasmon resonance (SPR) and ECL resonance energy transfer (ERET) between CdS QDs and AuNPs (or PtNPs). In the absence of target, the dual gears were "off". Then the B1-AuNP (gear B) and aptamer 1-PtNPs acted as signal quenching elements to quench ECL intensity due to ERET process. Upon addition of kanamycin, the aptamer 1-PtNPs were removed from the gear gradually, the ECL was enhanced due to SPR process between AuNPs and CdS QDs. After the incubation of aptamer 2, the dual gears were "off" again and ECL intensity was decreased by ERET process between AuNPs and CdS QDs. In the presence of neomycin, dual gears were "on" again, the ECL signal was enhanced by SPR process between AuNPs and CdS QDs. Under optimal condition, the proposed aptasensor exhibited wide linear ranges of kanamycin (10-10-10-6 M) and neomycin (10-9-10-5 M), and relatively low detection limits to kanamycin (1.7 × 10-11 M) and neomycin (3.5 × 10-10 M). The developed aptasensor realized the multiple ECL detection of kanamycin and neomycin with single luminophore, and was successfully applied to the detection of kanamycin and neomycin in food samples.
Collapse
|
10
|
Neng J, Li Y, Driscoll AJ, Wilson WC, Johnson PA. Detection of Multiple Pathogens in Serum Using Silica-Encapsulated Nanotags in a Surface-Enhanced Raman Scattering-Based Immunoassay. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5707-5712. [PMID: 29733579 DOI: 10.1021/acs.jafc.8b00026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A robust immunoassay based on surface-enhanced Raman scattering (SERS) has been developed to simultaneously detect trace quantities of multiple pathogenic antigens from West Nile virus, Rift Valley fever virus, and Yersinia pestis in fetal bovine serum. Antigens were detected by capture with silica-encapsulated nanotags and magnetic nanoparticles conjugated with polyclonal antibodies. The magnetic pull-down resulted in aggregation of the immune complexes, and the silica-encapsulated nanotags provided distinct spectra corresponding to each antigen captured. The limit of detection was ∼10 pg/mL in 20% fetal bovine serum, a significant improvement over previous studies in terms of sensitivity, level of multiplexing, and medium complexity. This highly sensitive multiplex immunoassay platform provides a promising method to detect various antigens directly in crude serum samples without the tedious process of sample preparation, which is desirable for on-site diagnostic testing and real-time disease monitoring.
Collapse
Affiliation(s)
- Jing Neng
- Department of Chemical Engineering , University of Wyoming , Laramie , Wyoming 82071 , United States
| | - Yina Li
- Department of Chemical Engineering , University of Wyoming , Laramie , Wyoming 82071 , United States
| | - Ashley J Driscoll
- Department of Chemical Engineering , University of Wyoming , Laramie , Wyoming 82071 , United States
| | - William C Wilson
- Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, Agricultural Research Service (ARS) , United States Department of Agriculture (USDA) , Manhattan , Kansas 66502 , United States
| | - Patrick A Johnson
- Department of Chemical Engineering , University of Wyoming , Laramie , Wyoming 82071 , United States
| |
Collapse
|
11
|
Xu N, Xu N, Liu L, Zhu P, Liang J. Minireview: Recent Advances in Surface-Enhanced Raman Scattering-Based Nucleic Acid Detection with Application to Pathogen Diagnosis. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1392971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nannan Xu
- Institute of Drug Development & Chemical Biology, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang, People’s Republic of China
| | - Ning Xu
- Institute of Drug Development & Chemical Biology, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang, People’s Republic of China
| | - Li Liu
- Institute of Drug Development & Chemical Biology, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang, People’s Republic of China
| | - Panpan Zhu
- Institute of Drug Development & Chemical Biology, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang, People’s Republic of China
| | - Jing Liang
- Institute of Drug Development & Chemical Biology, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang, People’s Republic of China
| |
Collapse
|
12
|
Pala L, Mabbott S, Faulds K, Bedics MA, Detty MR, Graham D. Introducing 12 new dyes for use with oligonucleotide functionalised silver nanoparticles for DNA detection with SERS. RSC Adv 2018; 8:17685-17693. [PMID: 35542104 PMCID: PMC9080490 DOI: 10.1039/c8ra01998c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/09/2018] [Indexed: 11/21/2022] Open
Abstract
Oligonucleotide functionalised metallic nanoparticles (MNPs) have been shown to be an effective tool in the detection of disease-specific DNA and have been employed in a number of diagnostic assays. The MNPs are also capable of facilitating surface enhanced Raman scattering (SERS) enabling detection to become highly sensitive. Herein we demonstrate the expansion of the range of specific SERS-active oligonucleotide MNPs through the use of 12 new Raman-active monomethine and trimethine chalcogenopyrylium and benzochalcogenopyrylium derivatives. This has resulted in an increased ability to carry out multiplexed analysis beyond the current small pool of resonant and non-resonant Raman active molecules, that have been used with oligonucleotide functionalised nanoparticles. Each dye examined here contains a variation of sulphur and selenium atoms in the heterocyclic core, together with phenyl, 2-thienyl, or 2-selenophenyl substituents on the 2,2′,6, and 6′ positions of the chalcogenopyrylium dyes and 2 and 2′ positions of the benzochalcogenopyrylium dyes. The intensity of SERS obtained from each dye upon conjugate hybridisation with a complementary single stranded piece of DNA was explored. Differing concentrations of each dye (1000, 3000, 5000 and 7000 equivalents per NP-DNA conjugate) were used to understand the effects of Raman reporter coating on the overall Raman intensity. It was discovered that dye concentration did not affect the target/control ratio, which remained relatively constant throughout and that a lower concentration of Raman reporter was favourable in order to avoid NP instability. A relationship between the dye structure and SERS intensity was discovered, leaving scope for future development of specific dyes containing substituents favourable for discrimination in a multiplex by SERS. Methine dyes containing S and Se in the backbone and at least 2 phenyls as substituents give the highest SERS signal following DNA-induced aggregation. Principal component analysis (PCA) was performed on the data to show differentiation between the dye classes and highlight possible future multiplexing capabilities of the 12 investigated dyes. 12 new Raman active dyes are reported to increase the SERS intensity upon hybridisation of a targeted DNA to oligonucleotide-NP conjugates and can be potentially used together in a multiplex.![]()
Collapse
Affiliation(s)
- L. Pala
- Centre for Molecular Nanometrology
- University of Strathclyde
- Department of Pure and Applied Chemistry
- Technology and Innovation Building
- Glasgow
| | - S. Mabbott
- Centre for Molecular Nanometrology
- University of Strathclyde
- Department of Pure and Applied Chemistry
- Technology and Innovation Building
- Glasgow
| | - K. Faulds
- Centre for Molecular Nanometrology
- University of Strathclyde
- Department of Pure and Applied Chemistry
- Technology and Innovation Building
- Glasgow
| | - M. A. Bedics
- Department of Chemistry
- University at Buffalo
- The State University of New York
- New York 14260
- USA
| | - M. R. Detty
- Department of Chemistry
- University at Buffalo
- The State University of New York
- New York 14260
- USA
| | - D. Graham
- Centre for Molecular Nanometrology
- University of Strathclyde
- Department of Pure and Applied Chemistry
- Technology and Innovation Building
- Glasgow
| |
Collapse
|
13
|
New Colorimetric Detection of Monosaccharides Based on Transformation of Silver Chloride Nanoparticles to Silver Nanoparticles Synthesized by Sargassum Alga. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1220-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Chen Q, Fu Y, Zhang W, Ye S, Zhang H, Xie F, Gong L, Wei Z, Jin H, Chen J. Highly sensitive detection of glucose: A quantitative approach employing nanorods assembled plasmonic substrate. Talanta 2017; 165:516-521. [DOI: 10.1016/j.talanta.2016.12.076] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/23/2016] [Accepted: 12/26/2016] [Indexed: 01/28/2023]
|
15
|
Chavada VD, Bhatt NM, Sanyal M, Shrivastav PS. Surface plasmon resonance based selective and sensitive colorimetric determination of azithromycin using unmodified silver nanoparticles in pharmaceuticals and human plasma. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 170:97-103. [PMID: 27419643 DOI: 10.1016/j.saa.2016.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/25/2016] [Accepted: 07/06/2016] [Indexed: 06/06/2023]
Abstract
In this article we report a novel method for colorimetric sensing and selective determination of a non-chromophoric drug-azithromycin, which lacks native absorbance in the UV-Visible region using unmodified silver nanoparticles (AgNPs). The citrate-capped AgNps dispersed in water afforded a bright yellow colour owing to the electrostatic repulsion between the particles due to the presence of negatively charged surface and showed surface plasmon resonance (SPR) band at 394nm. Addition of positively charged azithromycin at a concentration as low as 0.2μM induced rapid aggregation of AgNPs by neutralizing the negative charge on the particle surface. This phenomenon resulted in the colour change from bright yellow to purple which could be easily observed by the naked eye. This provided a simple platform for rapid determination of azithromycin based on colorimetric measurements. The factors affecting the colorimetric response like pH, volume of AgNPs suspension and incubation time were suitably optimized. The validated method was found to work efficiently in the established concentration range of 0.2-100.0μM using two different calibration models. The selectivity of the method was also evaluated by analysis of nanoparticles-aggregation response upon addition of several anions, cations and some commonly prescribed antibiotics. The method was successfully applied for the analysis of azithromycin in pharmaceuticals and spiked human plasma samples with good accuracy and precision. The simplicity, efficiency and cost-effectiveness of the method hold tremendous potential for the analysis of such non-chromophoric pharmaceuticals.
Collapse
Affiliation(s)
- Vijay D Chavada
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Nejal M Bhatt
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India
| | - Mallika Sanyal
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad 380009, Gujarat, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India.
| |
Collapse
|
16
|
Ou L, Chen Y, Su Y, Zou C, Chen Z. Detection of Genomic DNA Damage from Radiated Nasopharyngeal Carcinoma Cells Using Surface-Enhanced Raman Spectroscopy (SERS). APPLIED SPECTROSCOPY 2016; 70:1821-1830. [PMID: 27703049 DOI: 10.1177/0003702816671073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/09/2015] [Indexed: 05/19/2023]
Abstract
Structural changes and chemical modifications in DNA during interactions with X-ray radiation are still not clear within 48 h of incubation. We investigate genomic DNA from the radiated CNE2 cell line within 48 h of incubation using surface-enhanced Raman spectroscopy (SERS). Multivariate methods including principal component analysis (PCA) and random forest are proposed to explore the statistical significance before and after radiation. Our results show that intensities of several bands change after radiation, which indicates backbone damage and base-unstacking. Biological effects from DNA damage repairing process may be simultaneously stimulated and different from incubation time. Under doses of 10 Gy (with 24 and 48 h of incubation) and 20 Gy (with 48 h of incubation), the relative contents of C against T and A against G deviate obviously from the control level. Statistical results strengthen significantly the idea that modification in DNA bases is associated with the disruption of base-stacking in the DNA duplex. Our findings provide vital information for radiation-induced the DNA damage at the molecular level, which may provide insight into the effect and mechanism of anticarcinogens in tumor therapy.
Collapse
Affiliation(s)
- Lin Ou
- Key Laboratory of Optoelectronic Science and Technology for Medicine, Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Yang Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Ying Su
- Laboratory of Radiobiology, Fujian Provincial Tumor Hospital, Fuzhou, China
| | - Changyan Zou
- Laboratory of Radiobiology, Fujian Provincial Tumor Hospital, Fuzhou, China
| | - Zhong Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
- Laboratory of Radiobiology, Fujian Provincial Tumor Hospital, Fuzhou, China
| |
Collapse
|
17
|
A triple-amplification SPR electrochemiluminescence assay for chloramphenicol based on polymer enzyme-linked nanotracers and exonuclease-assisted target recycling. Biosens Bioelectron 2016; 86:477-483. [PMID: 27434234 DOI: 10.1016/j.bios.2016.07.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/29/2016] [Accepted: 07/04/2016] [Indexed: 11/23/2022]
Abstract
The present study aimed to explore a novel triple-amplification electrochemiluminescence (ECL) assay for detecting of chloramphenicol (CAP). This strategy was based on single-stranded DNA-binding protein (SSB) and horseradish peroxidase (HRP) enzyme-linked polymer (EnVision reagent, EV) labeled on Au nanoparticles (EV-Au-SSB) as nanotracer and exonuclease-assisted target recycling. The composite probes were prepared via immunoreactions between the CdS nanocrystal (CdS NC)-functionalized partial complementary DNA and aptamer (CdSNCs/Apt-ssDNA1) as capture probes, and EV-Au-SSB as nanotracer. When the composite probe solution co-existed with CAP and Exo I, the aptamer on the capture probes preferentially combined with CAP, and then CAP-Apt and nanotracer complex were released into the solution. Subsequently, Exo I in the solution could further digest the CAP-Apt from the 3'-end of the aptamer and release CAP, which could participate in further reaction with the probes. It was worth mentioning that EV contained a large number of HRPs on its dendritic chain. In the EV-Au-SSB, Au could enhance ECL intensity of CdS NCs by surface plasmon resonance. What's more, HRPs on EV could catalyze the reaction of H2O2, which could obviously enhance ECL intensity of CdS NCs. This study demonstrated excellent performance of the triple-amplification ECL assay, which makes this aptasensor system suitable and promising for the practical application of CAP residues in fish samples. Moreover, the assay might provide a promising avenue to develop efficient aptasensors to determine small-molecule harmful substances in environmental monitoring and food safety.
Collapse
|
18
|
Prinz J, Heck C, Ellerik L, Merk V, Bald I. DNA origami based Au-Ag-core-shell nanoparticle dimers with single-molecule SERS sensitivity. NANOSCALE 2016; 8:5612-20. [PMID: 26892770 PMCID: PMC4778414 DOI: 10.1039/c5nr08674d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 02/11/2016] [Indexed: 05/17/2023]
Abstract
DNA origami nanostructures are a versatile tool to arrange metal nanostructures and other chemical entities with nanometer precision. In this way gold nanoparticle dimers with defined distance can be constructed, which can be exploited as novel substrates for surface enhanced Raman scattering (SERS). We have optimized the size, composition and arrangement of Au/Ag nanoparticles to create intense SERS hot spots, with Raman enhancement up to 10(10), which is sufficient to detect single molecules by Raman scattering. This is demonstrated using single dye molecules (TAMRA and Cy3) placed into the center of the nanoparticle dimers. In conjunction with the DNA origami nanostructures novel SERS substrates are created, which can in the future be applied to the SERS analysis of more complex biomolecular targets, whose position and conformation within the SERS hot spot can be precisely controlled.
Collapse
Affiliation(s)
- J Prinz
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14469 Potsdam, Germany.
| | - C Heck
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14469 Potsdam, Germany. and BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Str. 11, 12489 Berlin, Germany and Department of Chemistry + SALSA, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - L Ellerik
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14469 Potsdam, Germany.
| | - V Merk
- Department of Chemistry + SALSA, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - I Bald
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14469 Potsdam, Germany. and BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Str. 11, 12489 Berlin, Germany
| |
Collapse
|
19
|
Tang JJ, Sun JF, Lui R, Zhang ZM, Liu JF, Xie JW. New Surface-Enhanced Raman Sensing Chip Designed for On-Site Detection of Active Ricin in Complex Matrices Based on Specific Depurination. ACS APPLIED MATERIALS & INTERFACES 2016; 8:2449-2455. [PMID: 26719952 DOI: 10.1021/acsami.5b12860] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Quick and accurate on-site detection of active ricin has very important realistic significance in view of national security and defense. In this paper, optimized single-stranded oligodeoxynucleotides named poly(21dA), which function as a depurination substrate of active ricin, were screened and chemically attached on gold nanoparticles (AuNPs, ∼100 nm) via the Au-S bond [poly(21dA)-AuNPs]. Subsequently, poly(21dA)-AuNPs were assembled on a dihydrogen lipoic-acid-modified Si wafer (SH-Si), thus forming the specific surface-enhanced Raman spectroscopy (SERS) chip [poly(21dA)-AuNPs@SH-Si] for depurination of active ricin. Under optimized conditions, active ricin could specifically hydrolyze multiple adenines from poly(21dA) on the chip. This depurination-induced composition change could be conveniently monitored by measuring the distinct attenuation of the SERS signature corresponding to adenine. To improve sensitivity of this method, a silver nanoshell was deposited on post-reacted poly(21dA)-AuNPs, which lowered the limit of detection to 8.9 ng mL(-1). The utility of this well-controlled SERS chip was successfully demonstrated in food and biological matrices spiked with different concentrations of active ricin, thus showing to be very promising assay for reliable and rapid on-site detection of active ricin.
Collapse
Affiliation(s)
- Ji-Jun Tang
- State Key Laboratory of Toxicology and Medical Countermeasures, and Laboratory of Toxicant Analysis, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences , Beijing 100850, People's Republic of China
| | - Jie-Fang Sun
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, People's Republic of China
| | - Rui Lui
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, People's Republic of China
| | - Zong-Mian Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, People's Republic of China
| | - Jing-Fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, People's Republic of China
- Institute of Environment and Health, Jianghan University , Wuhan, Hubei 430056, People's Republic of China
| | - Jian-Wei Xie
- State Key Laboratory of Toxicology and Medical Countermeasures, and Laboratory of Toxicant Analysis, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences , Beijing 100850, People's Republic of China
| |
Collapse
|
20
|
Gracie K, Moores M, Smith WE, Harding K, Girolami M, Graham D, Faulds K. Preferential Attachment of Specific Fluorescent Dyes and Dye Labeled DNA Sequences in a Surface Enhanced Raman Scattering Multiplex. Anal Chem 2016; 88:1147-53. [DOI: 10.1021/acs.analchem.5b02776] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kirsten Gracie
- Centre
of Molecular Nanometrology, Technology Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Matthew Moores
- Department
of Statistics, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - W. Ewen Smith
- Centre
of Molecular Nanometrology, Technology Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Kerry Harding
- Centre
of Molecular Nanometrology, Technology Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Mark Girolami
- Department
of Statistics, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Duncan Graham
- Centre
of Molecular Nanometrology, Technology Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Karen Faulds
- Centre
of Molecular Nanometrology, Technology Innovation Centre, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| |
Collapse
|
21
|
Abstract
Chromisms related to noble metal nanostructures are classified and discussed.
Collapse
Affiliation(s)
- Chao Zhang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry
- Peking University
- Beijing 100871
| | - Ling-Dong Sun
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry
- Peking University
- Beijing 100871
| | - Chun-Hua Yan
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Rare Earth Materials Chemistry and Applications
- PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry
- Peking University
- Beijing 100871
| |
Collapse
|
22
|
Yuan P, Ma R, Gao N, Garai M, Xu QH. Plasmon coupling-enhanced two-photon photoluminescence of Au@Ag core-shell nanoparticles and applications in the nuclease assay. NANOSCALE 2015; 7:10233-9. [PMID: 25990464 DOI: 10.1039/c5nr01409c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Au and Ag nanoparticles (NPs) have been known to display significantly enhanced two-photon photoluminescence (2PPL) upon the formation of nanoparticle aggregates. The enhancement effect of the core-shell nanoparticles has not been explored so far. Here we have prepared Au@Ag bimetallic core-shell nanoparticles with different thicknesses (1.1, 2.1, 3.5, 4.5, and 5.5 nm) of silver coating on 19 nm Au NPs to investigate the composition effects on plasmon coupling-enhanced 2PPL. A maximum 2PPL enhancement factor (IcoupledNPs/IisolatedNPs) of up to 840-fold was obtained for Au@Ag NPs with ∼3.5 nm Ag nanoshells. These Au@Ag NPs were subsequently utilized in two-photon detection of S1 nuclease as a photoluminescence turn on probe. This method displayed high sensitivity with the limit of detection of 1.4 × 10(-6) U μL(-1) and an excellent selectivity.
Collapse
Affiliation(s)
- Peiyan Yuan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
| | | | | | | | | |
Collapse
|
23
|
McAughtrie S, Faulds K, Graham D. Surface enhanced Raman spectroscopy (SERS): Potential applications for disease detection and treatment. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2014. [DOI: 10.1016/j.jphotochemrev.2014.09.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
24
|
Lee JH, You MH, Kim GH, Nam JM. Plasmonic nanosnowmen with a conductive junction as highly tunable nanoantenna structures and sensitive, quantitative and multiplexable surface-enhanced Raman scattering probes. NANO LETTERS 2014; 14:6217-25. [PMID: 25275930 DOI: 10.1021/nl502541u] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The precise design and synthesis of plasmonic nanostructures allow us to manipulate, enhance, and utilize the optical characteristics of metallic materials. Although many multimeric structures (e.g., dimers) with interparticle nanogap have been heavily studied, the plasmonic nanostructures with a conductive junction have not been well studied mostly because of the lack of the reliable synthetic methods that can reproducibly and precisely generate a large number of the plasmonic nanostructures with a controllable conductive nanojunction. Here, we formed various asymmetric Au-Ag head-body nanosnowman structures with a highly controllable conductive nanojunction and studied their plasmon modes that cover from visible to near-infrared range, electromagnetic field enhancement, and surface-enhanced Raman scattering (SERS) properties. It was shown that change in the plasmonic neck region between Au head and Ag body nanoparticles and symmetry breaking using different sizes and compositions within a structure can readily and controllably introduce various plasmon modes and change the electromagnetic field inside and around a nanosnowman structure. The charge-transfer and capacitive coupling plasmon modes at low frequencies are tunable in the snowman structure, and subtle change in the conductive junction area of the nanosnowman dramatically affects the resulting electromagnetic field and optical signal. The relationships between the electromagnetic field distribution and enhancement in the snowman structure, excitation laser wavelength, and Raman dye were also studied, and it was found that the strongest electromagnetic field was observed in the crevice area on the junction and synthesizing a thinner and sharper neck junction is critical to generate the stronger electromagnetic field in the crevice area and to obtain the charge-transfer mode-based near-infrared signal. We have further shown that highly reproducible SERS signals can be generated from these nanosnowman structures with a linear dependence on particle concentration (5 fM to 1 pM) and the SERS-enhancement factor values of >10(8) can be obtained with the aid of the resonance effect in SERS. Finally, a wide range of LSPR bands with high tunability along with high structural reproducibility and high synthetic yield make the nanosnowman structures as very good candidates for practically useful multiple-wavelength-compatible, quantitative and sensitive SERS probes, and highly tunable nanoantenna structures.
Collapse
Affiliation(s)
- Jung-Hoon Lee
- Department of Chemistry, Seoul National University , Seoul 151-747, South Korea
| | | | | | | |
Collapse
|
25
|
Dungchai W, Sameenoi Y, Chailapakul O, Volckens J, Henry CS. Determination of aerosol oxidative activity using silver nanoparticle aggregation on paper-based analytical devices. Analyst 2014; 138:6766-73. [PMID: 24067623 DOI: 10.1039/c3an01235b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Airborne particulate matter (PM) pollution significantly impacts human health, but the cellular mechanisms of PM-induced toxicity remain poorly understood. A leading hypothesis on the effects of inhaled PM involves the generation of cellular oxidative stress. To investigate PM-induced oxidative stress, analytical methods have been developed to study the chemical oxidation of dithiothreitol (DTT) in the presence of PM. Although DTT readily reacts with several forms of reactive oxygen species, this molecule is not endogenously produced in biological systems. Glutathione (GSH), on the other hand, is an endogenous antioxidant that is produced throughout the body and is directly involved in combating oxidative stress in the lungs and other tissues. We report here a new method for measuring aerosol oxidative activity that uses silver nanoparticle (AgNP) aggregation coupled to glutathione (GSH) oxidation in a paper-based analytical device. In this assay, the residual reduced GSH from the oxidation of reduced GSH to its disulfide induces the aggregation of AgNPs on a paper-based analytical device, which produces a reddish-brown product. Two methods for aerosol oxidative reactivity are presented: one based on change in color intensity using a traditional paper-based techniques and one based on the length of the color product formed using a distance-based device. These methods were validated against traditional spectroscopic assays for DTT and GSH that employ Elman's reagent. No significant difference was found between the levels measured by all three GSH methods (our two paper-based devices and the traditional method) at the 95% confidence level. PM reactivity towards GSH was less than towards DTT most likely due to the difference in the oxidation potential between the two molecules.
Collapse
Affiliation(s)
- Wijitar Dungchai
- Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Prachautid Road, Thungkru, Bangkok, 10140, Thailand
| | | | | | | | | |
Collapse
|
26
|
Paliwoda RE, Li F, Reid MS, Lin Y, Le XC. Sequential Strand Displacement Beacon for Detection of DNA Coverage on Functionalized Gold Nanoparticles. Anal Chem 2014; 86:6138-43. [DOI: 10.1021/ac501341t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rebecca E. Paliwoda
- Department of Chemistry, and ‡Department of Laboratory Medicine
and Pathology, Division of Analytical and Environmental
Toxicology, University of Alberta, Edmonton, Alberta T6G2G3, Canada
| | - Feng Li
- Department of Chemistry, and ‡Department of Laboratory Medicine
and Pathology, Division of Analytical and Environmental
Toxicology, University of Alberta, Edmonton, Alberta T6G2G3, Canada
| | - Michael S. Reid
- Department of Chemistry, and ‡Department of Laboratory Medicine
and Pathology, Division of Analytical and Environmental
Toxicology, University of Alberta, Edmonton, Alberta T6G2G3, Canada
| | - Yanwen Lin
- Department of Chemistry, and ‡Department of Laboratory Medicine
and Pathology, Division of Analytical and Environmental
Toxicology, University of Alberta, Edmonton, Alberta T6G2G3, Canada
| | - X. Chris Le
- Department of Chemistry, and ‡Department of Laboratory Medicine
and Pathology, Division of Analytical and Environmental
Toxicology, University of Alberta, Edmonton, Alberta T6G2G3, Canada
| |
Collapse
|
27
|
Kadam US, Schulz B, lrudayaraj J. Detection and quantification of alternative splice sites in Arabidopsis genes AtDCL2 and AtPTB2 with highly sensitive surface enhanced Raman spectroscopy (SERS) and gold nanoprobes. FEBS Lett 2014; 588:1637-43. [DOI: 10.1016/j.febslet.2014.02.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 02/28/2014] [Indexed: 11/30/2022]
|
28
|
Models and Methods for Quantitative Analysis of Surface-Enhanced Raman Spectra. IEEE J Biomed Health Inform 2014; 18:525-36. [DOI: 10.1109/jbhi.2013.2281947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
29
|
Cheng MH, Huang YX, Li JF, Wu ZJ, Xie LJ. Characteristic variation of α-fetoprotein DNA nanometer-range irradiated by iodine-125. Cancer Biother Radiopharm 2014; 28:226-32. [PMID: 23573955 DOI: 10.1089/cbr.2012.1231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To obtain the characteristic variation of structure and functional groups of α-fetoprotein (AFP) DNA irradiated by iodine-125((125)I), the AFP antisense oligonucleotide labeled with various radioactivity dose (125)I was mixed with the AFP DNA in a simulated polymerase chain reaction temperature condition. After the mixtures were irradiated by the (125)I from 2 to 72 hours, the mutation of the biogenic conformation and functional groups of the irradiated DNA were investigated using laser Raman spectroscopy. The shifted peak and the decreased intensity of the characteristic Raman spectra were found, which demonstrated that the structure of the phosphodiester linkage was broke, the pyridine and purine bases in DNA emerged and damaged. The model of gene conformation changed from form B to form C spectrum after the nanometer-range irradiation with (125)I from 2 to 24 hours. The damage of local pyridine and purine bases gradually increased along with the accumulation of irradiation, and the bases and ribosome were finally dissociated and stacked.
Collapse
Affiliation(s)
- Mu-hua Cheng
- Department of Nuclear Medicine, Third Hospital Affiliated Sun Yat-Sen University, Guangzhou, China
| | | | | | | | | |
Collapse
|
30
|
Graham D, Faulds K. Surface-enhanced Raman scattering as a detection technique for molecular diagnostics. Expert Rev Mol Diagn 2014; 9:537-9. [DOI: 10.1586/erm.09.37] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
31
|
Ko FH, Chang YC. Aptamer based surface enhanced Raman scattering detection of adenosine using various core sizes of Au–Ag core–shell nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra02762k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The combination of the varied sizes of Au NPs and seeding growth approach can be exploited to control the sizes of Au–Ag core–shell NPs. The silicon substrates with self-assembled Au–Ag core–shell NPs can be used to detect adenosine by a structures-switch aptamer.
Collapse
Affiliation(s)
- Fu-Hsiang Ko
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu, Taiwan
| | - Yu-Cheng Chang
- Department of Materials Science and Engineering
- Feng Chia University
- Taichung, Taiwan
| |
Collapse
|
32
|
Zhao Y, Liu L, Kuang H, Wang L, Xu C. SERS-active Ag@Au core–shell NP assemblies for DNA detection. RSC Adv 2014. [DOI: 10.1039/c4ra11112e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SERS-active silver@gold (Ag@Au) core–shell nanoparticles (NPs) assemblies were fabricated by polymerase chain reaction (PCR) for the sensitive DNA detection.
Collapse
Affiliation(s)
- Yuan Zhao
- State Key Lab of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi, People's Republic of China
- The Key Lab of Food Colloids and Biotechnology
| | - Liqiang Liu
- State Key Lab of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi, People's Republic of China
| | - Hua Kuang
- State Key Lab of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi, People's Republic of China
| | - Libing Wang
- State Key Lab of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi, People's Republic of China
| | - Chuanlai Xu
- State Key Lab of Food Science and Technology
- School of Food Science and Technology
- Jiangnan University
- Wuxi, People's Republic of China
| |
Collapse
|
33
|
Gracie K, Correa E, Mabbott S, Dougan JA, Graham D, Goodacre R, Faulds K. Simultaneous detection and quantification of three bacterial meningitis pathogens by SERS. Chem Sci 2014. [DOI: 10.1039/c3sc52875h] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We report the use of a SERS based DNA detection assay for the multiplexed, quantification of three bacterial meningitis pathogens.
Collapse
Affiliation(s)
- Kirsten Gracie
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Elon Correa
- School of Chemistry and Manchester Institute of Biotechnology
- University of Manchester
- Manchester, UK
| | - Samuel Mabbott
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Jennifer A. Dougan
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Duncan Graham
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Royston Goodacre
- School of Chemistry and Manchester Institute of Biotechnology
- University of Manchester
- Manchester, UK
| | - Karen Faulds
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| |
Collapse
|
34
|
Harper MM, McKeating KS, Faulds K. Recent developments and future directions in SERS for bioanalysis. Phys Chem Chem Phys 2013; 15:5312-28. [PMID: 23318580 DOI: 10.1039/c2cp43859c] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The ability to develop new and sensitive methods of biomolecule detection is crucial to the advancement of pre-clinical disease diagnosis and effective patient specific treatment. Surface enhanced Raman scattering (SERS) is an optical spectroscopy amenable to this goal, as it is capable of extremely sensitive biomolecule detection and multiplexed analysis. This perspective highlights where SERS has been successfully used to detect target biomolecules, specifically DNA and proteins, and where in vivo analysis has been successfully utilised. The future of SERS development is discussed and emphasis is placed on the steps required to transport this novel technique from the research laboratory to a clinical setting for medical diagnostics.
Collapse
Affiliation(s)
- Mhairi M Harper
- Centre for Molecular Nanometrology, WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, UK
| | | | | |
Collapse
|
35
|
Shuo Li, Nyagilo JO, Dave DP, Gao JX. Continuous Wavelet Transform Based Partial Least Squares Regression for Quantitative Analysis of Raman Spectrum. IEEE Trans Nanobioscience 2013; 12:214-21. [DOI: 10.1109/tnb.2013.2278288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
36
|
Huang R, Han S, Li XS. Detection of tobacco-related biomarkers in urine samples by surface-enhanced Raman spectroscopy coupled with thin-layer chromatography. Anal Bioanal Chem 2013; 405:6815-22. [PMID: 23807309 DOI: 10.1007/s00216-013-7107-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 04/25/2013] [Accepted: 05/31/2013] [Indexed: 10/26/2022]
Abstract
The nicotine metabolites, cotinine and trans-3'-hydroxycotinine (3HC) are considered as superior biomarkers for identifying tobacco exposure. More importantly, the ratio of 3HC to cotinine is a good indicator to phenotype individuals for cytochrome P450 2A6 activity and to individualize pharmacotherapy for tobacco addiction. In this paper, a simple, robust and novel method based on surface-enhanced Raman spectroscopy coupled with thin-layer chromatography (TLC) was developed to directly quantify the biomarkers in human urine samples. This is the first time surface-enhanced Raman spectroscopy (SERS) was used to detect cotinine and 3HC in urine samples. The linear dynamic range for the detection of cotinine is from 40 nM to 8 μM while that of 3HC is from 1 μM to 15 μM. The detection limits are 10 nM and 0.2 μM for cotinine and 3HC, respectively. The proposed method was further validated by quantifying the concentration of both cotinine and 3HC in smokers' urine samples. This TLC-SERS method allows the direct detection of cotinine in the urine samples of both active and passive smokers and the detection of 3HC in smokers.
Collapse
Affiliation(s)
- Rongfu Huang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave CHE205, Tampa, FL 33620, USA
| | | | | |
Collapse
|
37
|
Mieszawska AJ, Mulder WJM, Fayad ZA, Cormode DP. Multifunctional gold nanoparticles for diagnosis and therapy of disease. Mol Pharm 2013; 10:831-47. [PMID: 23360440 DOI: 10.1021/mp3005885] [Citation(s) in RCA: 435] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Gold nanoparticles (AuNPs) have a number of physical properties that make them appealing for medical applications. For example, the attenuation of X-rays by gold nanoparticles has led to their use in computed tomography imaging and as adjuvants for radiotherapy. AuNPs have numerous other applications in imaging, therapy and diagnostic systems. The advanced state of synthetic chemistry of gold nanoparticles offers precise control over physicochemical and optical properties. Furthermore gold cores are inert and are considered to be biocompatible and nontoxic. The surface of gold nanoparticles can easily be modified for a specific application, and ligands for targeting, drugs or biocompatible coatings can be introduced. AuNPs can be incorporated into larger structures such as polymeric nanoparticles or liposomes that deliver large payloads for enhanced diagnostic applications, efficiently encapsulate drugs for concurrent therapy or add additional imaging labels. This array of features has led to the aforementioned applications in biomedical fields, but more recently in approaches where multifunctional gold nanoparticles are used for multiple methods, such as concurrent diagnosis and therapy, so-called theranostics. This review covers basic principles and recent findings in gold nanoparticle applications for imaging, therapy and diagnostics, with a focus on reports of multifunctional AuNPs.
Collapse
Affiliation(s)
- Aneta J Mieszawska
- Translational and Molecular Imaging Institute and Imaging Science Laboratories, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, New York 10029, USA
| | | | | | | |
Collapse
|
38
|
Xu PF, Lee JH, Ma K, Choi C, Jin S, Wang J, Cha JN. Enhanced Raman signals from switchable nanoparticle probes. Chem Commun (Camb) 2013; 49:8994-6. [DOI: 10.1039/c3cc44781b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
39
|
Stevenson R, McAughtrie S, Senior L, Stokes RJ, McGachy H, Tetley L, Nativo P, Brewer JM, Alexander J, Faulds K, Graham D. Analysis of intracellular enzyme activity by surface enhanced Raman scattering. Analyst 2013; 138:6331-6. [DOI: 10.1039/c3an00729d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Lee JH, Nam JM, Jeon KS, Lim DK, Kim H, Kwon S, Lee H, Suh YD. Tuning and maximizing the single-molecule surface-enhanced Raman scattering from DNA-tethered nanodumbbells. ACS NANO 2012; 6:9574-84. [PMID: 23036132 DOI: 10.1021/nn3028216] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We extensively study the relationships between single-molecule surface-enhanced Raman scattering (SMSERS) intensity, enhancement factor (EF) distribution over many particles, interparticle distance, particle size/shape/composition and excitation laser wavelength using the single-particle AFM-correlated Raman measurement method and theoretical calculations. Two different single-DNA-tethered Au-Ag core-shell nanodumbbell (GSND) designs with an engineerable nanogap were used in this study: the GSND-I with various interparticle nanogaps from ∼4.8 nm to <1 nm or with no gap and the GSND-II with the fixed interparticle gap size and varying particle size from a 23-30 nm pair to a 50-60 nm pair. From the GSND-I, we learned that synthesizing a <1 nm gap is a key to obtain strong SMSERS signals with a narrow EF value distribution. Importantly, in the case of the GSND-I with <1 nm interparticle gap, an EF value of as high as 5.9 × 10(13) (average value = 1.8 × 10(13)) was obtained and the EF values of analyzed particles were narrowly distributed between 1.9 × 10(12) and 5.9 × 10(13). In the case of the GSND-II probes, a combination of >50 nm Au cores and 514.5 nm laser wavelength that matches well with Ag shell generated stronger SMSERS signals with a more narrow EF distribution than <50 nm Au cores with 514.5 nm laser or the GSND-II structures with 632.8 nm laser. Our results show the usefulness and flexibility of these GSND structures in studying and obtaining SMSERS structures with a narrow distribution of high EF values and that the GSNDs with < 1 nm are promising SERS probes with highly sensitive and quantitative detection capability when optimally designed.
Collapse
Affiliation(s)
- Jung-Hoon Lee
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Nakao H, Tokonami S, Hamada T, Shiigi H, Nagaoka T, Iwata F, Takeda Y. Direct observation of one-dimensional plasmon coupling in metallic nanofibers prepared by evaporation-induced self-assembly with DNA. NANOSCALE 2012; 4:6814-6822. [PMID: 23011186 DOI: 10.1039/c2nr32076b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here we report a simple method for the preparation of highly aligned metallic nanofibers with anisotropic aggregates of silver nanoparticles (AgNPs) as well as a direct observation of localized plasmon field and its coupling in the prepared metallic nanofibers. Metallic nanofibers of several tens of nanometers wide and millimeters long were prepared. The preparation method, which is based on the process of evaporation-induced self-assembly with DNA and drying front movement, eliminates the need for lithography and an external field, and it is fast, cheap and easy. Dark-field scattering spectroscopy was used to study the strong plasmon coupling of AgNPs in the metallic nanofibers. We observed strong near-field coupling between neighboring nanoparticles, which results in red-shifted multipolar plasmon modes that are highly polarized along the fiber axis. The polarization dependence of plasmon coupling in the metallic nanofibers observed in this study was satisfactorily explained by the morphology of the metallic nanofibers, which was characterized by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Furthermore, Raman spectra imaging of the metallic nanofibers revealed the existence of intense hot spots localized along their axes, which played a significant role in the intensity of surface enhanced Raman scattering (SERS) signals from DNA bases in the metallic nanofiber. Our results demonstrate the use of evaporation-induced self-assembly with DNA as a straightforward method to produce one-dimensional coupling of localized plasmons with a longer scale.
Collapse
Affiliation(s)
- Hidenobu Nakao
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
| | | | | | | | | | | | | |
Collapse
|
42
|
Jiang R, Chen H, Shao L, Li Q, Wang J. Unraveling the evolution and nature of the plasmons in (Au core)-(Ag shell) nanorods. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:OP200-7. [PMID: 22714684 DOI: 10.1002/adma.201201896] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Indexed: 05/22/2023]
Affiliation(s)
- Ruibin Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | | | | | | | | |
Collapse
|
43
|
Enzyme-free detection and quantification of double-stranded nucleic acids. Anal Bioanal Chem 2012; 404:415-22. [PMID: 22695500 DOI: 10.1007/s00216-012-6133-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 04/24/2012] [Accepted: 05/21/2012] [Indexed: 01/01/2023]
Abstract
We have developed a fully enzyme-free SERRS hybridization assay for specific detection of double-stranded DNA sequences. Although all DNA detection methods ranging from PCR to high-throughput sequencing rely on enzymes, this method is unique for being totally non-enzymatic. The efficiency of enzymatic processes is affected by alterations, modifications, and/or quality of DNA. For instance, a limitation of most DNA polymerases is their inability to process DNA damaged by blocking lesions. As a result, enzymatic amplification and sequencing of degraded DNA often fail. In this study we succeeded in detecting and quantifying, within a mixture, relative amounts of closely related double-stranded DNA sequences from Rupicapra rupicapra (chamois) and Capra hircus (goat). The non-enzymatic SERRS assay presented here is the corner stone of a promising approach to overcome the failure of DNA polymerase when DNA is too degraded or when the concentration of polymerase inhibitors is too high. It is the first time double-stranded DNA has been detected with a truly non-enzymatic SERRS-based method. This non-enzymatic, inexpensive, rapid assay is therefore a breakthrough in nucleic acid detection.
Collapse
|
44
|
The effect of base-pair sequence on electrochemically driven denaturation. Bioelectrochemistry 2012; 85:7-13. [DOI: 10.1016/j.bioelechem.2011.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 11/17/2011] [Accepted: 11/18/2011] [Indexed: 11/18/2022]
|
45
|
van Lierop D, Krpetić Ž, Guerrini L, Larmour IA, Dougan JA, Faulds K, Graham D. Positively charged silver nanoparticles and their effect on surface-enhanced Raman scattering of dye-labelled oligonucleotides. Chem Commun (Camb) 2012; 48:8192-4. [PMID: 22544041 DOI: 10.1039/c2cc31731a] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Improved positively charged nanoparticles are described to provide a simplified SERS substrate for DNA detection. Complete flocculation of the nanoparticles is prevented due to the controlled analyte induced aggregation. This provides a stable aggregation state which significantly extends the analysis window simplifying DNA detection by SERS.
Collapse
Affiliation(s)
- Danny van Lierop
- Centre for Molecular Nanometrology, WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral St., Glasgow, G1 1XL, UK
| | | | | | | | | | | | | |
Collapse
|
46
|
He S, Liu KK, Su S, Yan J, Mao X, Wang D, He Y, Li LJ, Song S, Fan C. Graphene-based high-efficiency surface-enhanced Raman scattering-active platform for sensitive and multiplex DNA detection. Anal Chem 2012; 84:4622-7. [PMID: 22497579 DOI: 10.1021/ac300577d] [Citation(s) in RCA: 168] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have developed a surface-enhanced Raman scattering (SERS)-active substrate based on gold nanoparticle-decorated chemical vapor deposition (CVD)-growth graphene and used it for multiplexing detection of DNA. Due to the combination of gold nanoparticles and graphene, the Raman signals of dye were dramatically enhanced by this novel substrate. With the gold nanoparticles, DNA capture probes could be easily assembled on the surface of graphene films which have a drawback to directly immobilize DNA. This platform exhibits extraordinarily high sensitivity and excellent specificity for DNA detection. A detection limit as low as 10 pM is obtained. Importantly, two different DNA targets could be detected simultaneously on the same substrate just using one light source.
Collapse
Affiliation(s)
- Shijiang He
- Laboratory of Physical Biology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Harper MM, Dougan JA, Shand NC, Graham D, Faulds K. Detection of SERS active labelled DNA based on surface affinity to silver nanoparticles. Analyst 2012; 137:2063-8. [PMID: 22434199 DOI: 10.1039/c2an35112a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developments in specific DNA detection assays have been shown to be increasingly beneficial for molecular diagnostics and biological research. Many approaches use optical spectroscopy as an assay detection method and, owing to the sensitivity and molecular specificity offered, surface enhanced Raman scattering (SERS) spectroscopy has become a competitively exploited technique. This study utilises SERS to demonstrate differences in affinity of dye labelled DNA through differences in electrostatic interactions with silver nanoparticles. Results show clear differences in the SERS intensity obtained from single stranded DNA, double stranded DNA and a free dye label and demonstrate surface attraction is driven through electrostatic charges on the nucleotides and not the SERS dye. It has been further demonstrated that, through optimisation of experimental conditions and careful consideration of sequence composition, a DNA detection method with increased sample discrimination at lower DNA concentrations can be achieved.
Collapse
Affiliation(s)
- Mhairi M Harper
- Centre for Molecular Nanometrology, WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Catherdral St., Glasgow, G1 1XL, UK
| | | | | | | | | |
Collapse
|
48
|
Dougan JA, Faulds K. Surface enhanced Raman scattering for multiplexed detection. Analyst 2012; 137:545-54. [DOI: 10.1039/c2an15979a] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
49
|
Wu LP, Zhao HW, Qin ZH, Zhao XY, Pu WD. Highly Selective Hg (II) Ion Detection Based on Linear Blue-Shift of the Maximum Absorption Wavelength of Silver Nanoparticles. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2012; 2012:856947. [PMID: 22567571 PMCID: PMC3335303 DOI: 10.1155/2012/856947] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Accepted: 02/01/2012] [Indexed: 05/19/2023]
Abstract
A new method of detecting Hg (II) ion with silver nanoparticles (AgNPs) is developed in this contribution. When Hg (II) ions were added into AgNPs solution, the solution displayed rapid color change and blue shift of the maximum absorption wavelength (Δλ), which was in proportion to the Hg (II) ion concentration over the range of 2.0 × 10(-7)-6.0 × 10(-6) mol/L, with detection limit (3σ) of 6.6 × 10(-9 )mol/L. Under the same experimental conditions, other metal ions did not interfere. Thus, we propose a rapid, simple and highly selective method for detecting Hg (II) ion.
Collapse
Affiliation(s)
- Li Ping Wu
- Department of Chemistry, Third Military Medical University, Chongqing 400038, China
| | - Hua Wen Zhao
- Department of Chemistry, Third Military Medical University, Chongqing 400038, China
- *Hua Wen Zhao:
| | - Zhu Hong Qin
- Department of Chemistry, Third Military Medical University, Chongqing 400038, China
- College of Chemistry and Chemical Engineering, MOE Key Laboratory on Luminescence and Real-Time Analysis, Southwest University, Chongqing 400715, China
| | - Xian Ying Zhao
- Department of Chemistry, Third Military Medical University, Chongqing 400038, China
| | - Wen Dan Pu
- Department of Chemistry, Third Military Medical University, Chongqing 400038, China
- College of Chemistry and Chemical Engineering, MOE Key Laboratory on Luminescence and Real-Time Analysis, Southwest University, Chongqing 400715, China
| |
Collapse
|
50
|
Algar WR, Prasuhn DE, Stewart MH, Jennings TL, Blanco-Canosa JB, Dawson PE, Medintz IL. The controlled display of biomolecules on nanoparticles: a challenge suited to bioorthogonal chemistry. Bioconjug Chem 2011; 22:825-58. [PMID: 21585205 DOI: 10.1021/bc200065z] [Citation(s) in RCA: 349] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Interest in developing diverse nanoparticle (NP)-biological composite materials continues to grow almost unabated. This is motivated primarily by the desire to simultaneously exploit the properties of both NP and biological components in new hybrid devices or materials that can be applied in areas ranging from energy harvesting and nanoscale electronics to biomedical diagnostics. The utility and effectiveness of these composites will be predicated on the ability to assemble these structures with control over NP/biomolecule ratio, biomolecular orientation, biomolecular activity, and the separation distance within the NP-bioconjugate architecture. This degree of control will be especially critical in creating theranostic NP-bioconjugates that, as a single vector, are capable of multiple functions in vivo, including targeting, image contrast, biosensing, and drug delivery. In this review, a perspective is given on current and developing chemistries that can provide improved control in the preparation of NP-bioconjugates. The nanoscale properties intrinsic to several prominent NP materials are briefly described to highlight the motivation behind their use. NP materials of interest include quantum dots, carbon nanotubes, viral capsids, liposomes, and NPs composed of gold, lanthanides, silica, polymers, or magnetic materials. This review includes a critical discussion on the design considerations for NP-bioconjugates and the unique challenges associated with chemistry at the biological-nanoscale interface-the liabilities of traditional bioconjugation chemistries being particularly prominent therein. Select bioorthogonal chemistries that can address these challenges are reviewed in detail, and include chemoselective ligations (e.g., hydrazone and Staudinger ligation), cycloaddition reactions in click chemistry (e.g., azide-alkyne cyclyoaddition, tetrazine ligation), metal-affinity coordination (e.g., polyhistidine), enzyme driven modifications (e.g., HaloTag, biotin ligase), and other site-specific chemistries. The benefits and liabilities of particular chemistries are discussed by highlighting relevant NP-bioconjugation examples from the literature. Potential chemistries that have not yet been applied to NPs are also discussed, and an outlook on future developments in this field is given.
Collapse
Affiliation(s)
- W Russ Algar
- Center for Bio/Molecular Science and Engineering, Optical Sciences Division, U.S. Naval Research Laboratory, 4555 Overlook Avenue S.W., Washington, DC 20375, United States
| | | | | | | | | | | | | |
Collapse
|