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Wang ZK, Yuan ZX, Qian C, Liu XW. Plasmonic Probing of Deoxyribonucleic Acid Hybridization at the Single Base Pair Resolution. Anal Chem 2023; 95:18398-18406. [PMID: 38055795 DOI: 10.1021/acs.analchem.3c03316] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Partial DNA duplex formation greatly impacts the quality of DNA hybridization and has been extensively studied due to its significance in many biological processes. However, traditional DNA sensing methods suffer from time-consuming amplification steps and hinder the acquisition of information about single-molecule behavior. In this work, we developed a plasmonic method to probe the hybridization process at a single base pair resolution and study the relationship between the complementarity of DNA analytes and DNA hybridization behaviors. We measured single-molecule hybridization events with Au NP-modified ssDNA probes in real time and found two hybridization adsorption events: stable and transient adsorption. The ratio of these two hybridization adsorption events was correlated with the length of the complementary sequences, distinguishing DNA analytes from different complementary sequences. By using dual incident angle excitation, we recognized different single-base complementary sequences. These results demonstrated that the plasmonic method can be applied to study partial DNA hybridization behavior and has the potential to be incorporated into the identification of similar DNA sequences, providing a sensitive and quantitative tool for DNA analysis.
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Affiliation(s)
- Zhao-Kun Wang
- School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Zhen-Xuan Yuan
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Chen Qian
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xian-Wei Liu
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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2
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Abedin S, Roy K, Jin X, Xia H, Brueck SRJ, Potma EO. Surface-enhanced coherent anti-Stokes Raman scattering of molecules near metal-dielectric nanojunctions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:8760-8767. [PMID: 39253366 PMCID: PMC11382608 DOI: 10.1021/acs.jpcc.2c01642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
We discuss an experimental configuration consisting of {Au film}-molecule-{Au particle} or {Au film}-molecule-{Si particle} nanojunctions for performing wide-field surface-enhanced CARS (SE-CARS) measurements in a reproducible and controllable manner. While the allowable illumination dosage in the {Au film}-molecule-{Au particle} case is limited by the strong two-photon background from the gold, we successfully generate a detectable coherent Raman response from a molecular monolayer using the lowest reported average power densities to-date. With a vision to minimize the two-photon background and the intrinsic losses observed in all-metal plasmonic systems, we examine the possibility of using high-index dielectric particles on top of a thin metal film to generate strong nanoscopic hotspots. We demonstrate repeatable SE-CARS measurements at the {Au film}-molecule-{Si particle} heterojunction, underlining the usability of this experimental geometry. This work paves the way for the development of next-generation of chemical and biomolecular sensing assays that can minimize some of the major drawbacks encountered in fragile and lossy all-metal plasmonic systems.
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Affiliation(s)
- Shamsul Abedin
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697, USA
| | - Khokan Roy
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - Xin Jin
- Armonica Technologies, Inc., Albuquerque, NM 87110, USA
| | - Hui Xia
- Armonica Technologies, Inc., Albuquerque, NM 87110, USA
| | - S R J Brueck
- Armonica Technologies, Inc., Albuquerque, NM 87110, USA
| | - Eric O Potma
- Department of Chemistry, University of California, Irvine, CA 92697, USA
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Saad Y, Gazzah MH, Mougin K, Selmi M, Belmabrouk H. Sensitive Detection of SARS-CoV-2 Using a Novel Plasmonic Fiber Optic Biosensor Design. PLASMONICS (NORWELL, MASS.) 2022; 17:1489-1500. [PMID: 35493722 PMCID: PMC9034078 DOI: 10.1007/s11468-022-01639-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 04/11/2022] [Indexed: 06/01/2023]
Abstract
The coronavirus (COVID-19) pandemic has put the entire world at risk and caused an economic downturn in most countries. This work provided theoretical insight into a novel fiber optic-based plasmonic biosensor that can be used for sensitive detection of SARS-CoV-2. The aim was always to achieve reliable, sensitive, and reproducible detection. The proposed configuration is based on Ag-Au alloy nanoparticle films covered with a layer of graphene which promotes the molecular adsorption and a thiol-tethered DNA layer as a ligand. Here, the combination of two recent approaches in a single configuration is very promising and can only lead to considerable improvement. We have theoretically analyzed the sensor performance in terms of sensitivity and resolution. To highlight the importance of the new configuration, a comparison was made with two other sensors. One is based on gold nanoparticles incorporated into a host medium; the other is composed of a bimetallic Ag-Au layer in the massive state. The numerical results obtained have been validated and show that the proposed configuration offers better sensitivity (7100 nm\RIU) and good resolution (figure of merit; FOM = 38.88RIU - 1 and signal-to-noise ratio; SNR = 0.388). In addition, a parametric study was performed such as the graphene layers' number and the size of the nanoparticles.
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Affiliation(s)
- Yosra Saad
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Mohamed Hichem Gazzah
- Laboratory of Quantum and Statistical Physics, Faculty of Sciences of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Karine Mougin
- University of Haute-Alsace, Institute of Materials Science of Mulhouse, IS2M-CNRS-UMR 7361, 15 Rue Jean Starcky, 68057 Mulhouse, France
| | - Marwa Selmi
- Laboratory of Electronics and Microelectronics, Faculty of Science of Monastir, University of Monastir, 5019 Monastir, Tunisia
| | - Hafedh Belmabrouk
- Laboratory of Electronics and Microelectronics, Faculty of Science of Monastir, University of Monastir, 5019 Monastir, Tunisia
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Li J, Jin Y, Wang Y, Zhao Y, Su H. Detecting Pb 2+by a 'turn-on' fluorescence sensor based on DNA functionalized magnetic nanocomposites. NANOTECHNOLOGY 2021; 33:075603. [PMID: 34399416 DOI: 10.1088/1361-6528/ac1dd3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Sensitive and selective detection of the lead ion (Pb2+) plays an important role in terms of both human health and environmental protection, as the heavy metal is fairly ubiquitous and highly toxic. The highly stable fluorescence biosensor is composed of Fe3O4@TiO2core-shell nanocomposites, functionalized with a carboxyl fluorescein labeled DNA. The morphology, physical and chemical properties of the sensing nanomaterials were studied by transmission electron microscopy, FT-IR spectroscopy (FT-IR), x-ray powder diffraction and vibrating sample magnetometer. UV-visible and fluorescence spectroscopy were used to characterize the fluorescein functionalized magnetic nanoparticles. The performance of Pb2+detection displayed an excellent linearity (R2 = 0.995) in the range of 10-10to 5 × 10-9ppm with a detection limit of 10-10ppm, based on the optimization of the fabrication process and aptamers' specification. The fluorescence biosensor has an accurate response, excellent recoveries and high adsorbent capacities. It was successfully applied for the determination of Pb2+in contaminated water and serum samples; the detection of limit in both media were 10-10ppm. These features ensure the potential use of aptamer functionalized magnetic nanocomposites as a new class of non-toxic biocompatible sensors for biological and environmental applications.
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Affiliation(s)
- Jiayi Li
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yu Jin
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yaoqiang Wang
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yilin Zhao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
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Shen Y, Anwar TB, Mulchandani A. Current status, advances, challenges and perspectives on biosensors for COVID-19 diagnosis in resource-limited settings. SENSORS AND ACTUATORS REPORTS 2021; 3:100025. [PMID: 35047829 PMCID: PMC7831652 DOI: 10.1016/j.snr.2021.100025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 05/07/2023]
Abstract
As the COVID-19 pandemic has profoundly impacted human life, prompt diagnostic tests are becoming an essential part of the social activities. However, the expensive and time-consuming laboratory-based traditional methods do not suffice the enormous needs for massive number of tests, especially in resource-limited settings. Therefore, more affordable, rapid, sensitive and specific field-practical diagnostic devices play an important role in the fight against the disease. In this review, we present the current status and advances in the biosensing technologies for diagnosing COVID-19, ranging from commercial achievements to research developments. Starting from a brief introduction to the disease biomarkers, this review summarizes the working principles of the biosensing technologies, followed by a review of the commercial products and research advances in academia. We recapitulate the literatures with a wide scope of bio/marker detections, embracing nucleic acids, viral proteins, human immune responses, and other potential bio/markers. Further, the challenges and perspectives for their employment in future point-of-care applications are discussed, with an extended appraisal on the practical strategies to enlarge the testing capability without high cost. This critical review provides a comprehensive insight into the diagnostic tools for COVID-19 and will encourage the industry and academia in the field of diagnostic biosensing for future evolvement to large-scale point-of-care screening of COVID-19.
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Affiliation(s)
- Yu Shen
- Chemical and Environmental Engineering Department, University of California Riverside, Riverside, CA, 92521 USA
| | - Touhid Bin Anwar
- Chemical and Environmental Engineering Department, University of California Riverside, Riverside, CA, 92521 USA
| | - Ashok Mulchandani
- Chemical and Environmental Engineering Department, University of California Riverside, Riverside, CA, 92521 USA
- Center for Environmental Research and Technology (CE-CERT), University of California Riverside, Riverside, CA, 92507 USA
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Uddin SMA, Chowdhury SS, Kabir E. Numerical Analysis of a Highly Sensitive Surface Plasmon Resonance Sensor for SARS-CoV-2 Detection. PLASMONICS (NORWELL, MASS.) 2021; 16:2025-2037. [PMID: 34054377 PMCID: PMC8144697 DOI: 10.1007/s11468-021-01455-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/03/2021] [Indexed: 05/27/2023]
Abstract
In this paper, we propose a surface plasmon resonance (SPR) structure based on Kretschmann configuration incorporating layers of silicon and BaTiO3 on top of Ag for real-time detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using thiol-tethered DNA as a ligand. Extensive numerical analysis based on transfer matrix theory as well as finite-difference time-domain (FDTD) technique has been performed to characterize the sensor response considering sensitivity, full width at half maxima, and minimum reflection. About 7.6 times enhanced sensitivity has been obtained using the proposed architecture for SARS-CoV-2 detection, compared to the basic Kretschmann configuration. Notably, the structure provides consistent enhancement over other competitive SPR structures for both angular and wavelength interrogations with a figure-of-merit of 692.28. Additionally, we repeated simulations for various ligate-ligand pairs to assess the range of applicability and robust performance improvement has been observed. As a result, the proposed sensor design provides a suitable configuration for highly sensitive, rapid, noninvasive biosensing which can be useful if adopted in experimental sensing protocols.
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Affiliation(s)
| | | | - Ehsan Kabir
- Department of EEE, Bangladesh University of Engineering and Technology, Dhaka, 1205 Bangladesh
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Adura C, Aliaga C, Silva F, Vera C, Pino E, Celis F, Aracena A, Tirapegui C. A simple method to estimate the mean number of lipophilic molecules on nanoparticle surfaces by fluorescence measurements. NANOTECHNOLOGY 2021; 32:315711. [PMID: 33906171 DOI: 10.1088/1361-6528/abfc0c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Measurements of fluorescence intensity of the hydrophobic pyridinium salt (DTPSH) remaining in the organic phase after partition experiments in the DCM/H2O system allowed an approximate method to be developed to estimate the mean number of molecules (N = 942) on the surface of 22.8 nm gold nanoparticles and the separation (1.89 nm) between these organic molecules. This protocol is based on the ability that the organic molecules possess to coat the surface of the nanoparticle, which can migrate from the organic to the aqueous phase as a result of the driving force of the strong binding of sulfur to gold. To validate our estimation, we used a projection of the results obtained by Wales and Ulker to solve the Thomson problem, a mathematicians' challenge, used as a model to calculate the mean distance (1.82 nm) separating particles on the surface, in excellent agreement with the results obtained by our method. The quality of results, the simplicity of calculations, the low fluorescence detection limit, and the inexpensive materials, recommend this procedure for rapid estimates of the mean number of molecules on the surface of nanoparticles.
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Affiliation(s)
- Carolina Adura
- High-Throughput and Spectroscopy Resource Center, The Rockefeller University, 1230 York Avenue, New York, NY 10065, United States of America
| | - Carolina Aliaga
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Chile
| | - Francisco Silva
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile
| | - Cristian Vera
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile
| | - Eduardo Pino
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile
| | - Freddy Celis
- Laboratorio de Procesos Fotónicos y Electroquímicos, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Subida Leopoldo Carvallo 270, Valparaíso, Chile
| | - Andrés Aracena
- Universidad de las Américas, Instituto de Ciencias Naturales, Manuel Montt 948, Santiago, Chile
| | - Cristian Tirapegui
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, El Llano Subercaseaux 2801, San Miguel, Santiago, Chile
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