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Xiao C, Ross G, Nielen MWF, Eriksson J, Salentijn GI, Mak WC. A portable smartphone-based imaging surface plasmon resonance biosensor for allergen detection in plant-based milks. Talanta 2023; 257:124366. [PMID: 36863294 DOI: 10.1016/j.talanta.2023.124366] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/23/2022] [Accepted: 02/13/2023] [Indexed: 02/22/2023]
Abstract
Food allergies are hypersensitivity immune responses triggered by (traces of) allergenic compounds in foods and drinks. The recent trend towards plant-based and lactose-free diets has driven an increased consumption of plant-based milks (PBMs) with the risk of cross-contamination of various allergenic plant-based proteins during the food manufacturing process. Conventional allergen screening is usually performed in the laboratory, but portable biosensors for on-site screening of food allergens at the production site could improve quality control and food safety. Here, we developed a portable smartphone imaging surface plasmon resonance (iSPR) biosensor composed of a 3D-printed microfluidic SPR chip for the detection of total hazelnut protein (THP) in commercial PBMs and compared its instrumentation and analytical performance with a conventional benchtop SPR. The smartphone iSPR shows similar characteristic sensorgrams compared with the benchtop SPR and enables the detection of trace levels of THP in spiked PBMs with the lowest tested concentration of 0.625 μg/mL THP. The smartphone iSPR achieved LoDs of 0.53, 0.16, 0.14, 0.06, and 0.04 μg/mL THP in 10x-diluted soy, oat, rice, coconut, and almond PBMs, respectively, with good correlation with the conventional benchtop SPR system (R2 0.950-0.991). The portability and miniaturized characteristics of the smartphone iSPR biosensor platform make it promising for the future on-site detection of food allergens by food producers.
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Affiliation(s)
- Chi Xiao
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Georgina Ross
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Michel W F Nielen
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Jens Eriksson
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Gert Ij Salentijn
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
| | - Wing Cheung Mak
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden; Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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Pasqualotto E, Cretaio E, Franchin L, De Toni A, Paccagnella A, Bonaldo S, Scaramuzza M. SPECTRA: A Novel Compact System for Surface Plasmon Resonance Measurements. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23094309. [PMID: 37177513 PMCID: PMC10181553 DOI: 10.3390/s23094309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/11/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023]
Abstract
Surface plasmon resonance (SPR) is a common and useful measurement technique to perform fast and sensitive optical detection. SPR instrumentations usually comprise optical systems of mirrors and lenses which are quite expensive and impractical for point-of-care applications. In this work, we presented a novel and compact SPR device called SPECTRA, designed as a spectrophotometer add-on with a grating coupling configuration. The device is conceived as a marketable solution to perform quick SPR measurements in grating configuration without the requirement of complex instrumentation. The device can be customized either in a vertical structure to reach lower incident light angles, or in a horizontal configuration, which is suitable for SPR analysis using liquid solutions. The SPECTRA performance was evaluated through SPR measurements in typical applications. The vertical SPECTRA system was employed to detect different functionalization molecules on gold 720 nm-period grating devices. Meanwhile, the horizontal SPECTRA configuration was exploited to carry out fluid-dynamic measurements using a microfluidic cell with glycerol solutions at increasing concentrations to account for different refractive indexes. The experimental tests confirmed that the SPECTRA design is suitable for SPR measurements, demonstrating its capability to detect the presence of analytes and changes in surface properties both in static and dynamic set-ups.
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Affiliation(s)
| | - Erica Cretaio
- ARC-Centro Ricerche Applicate s.r.l., 35132 Padova, Italy
- Department of Information Engineering, University of Padova, 35131 Padova, Italy
| | - Lara Franchin
- Department of Information Engineering, University of Padova, 35131 Padova, Italy
| | - Alessandro De Toni
- ARC-Centro Ricerche Applicate s.r.l., 35132 Padova, Italy
- Up-Code s.r.l., 35132 Padova, Italy
| | | | - Stefano Bonaldo
- Department of Information Engineering, University of Padova, 35131 Padova, Italy
| | - Matteo Scaramuzza
- ARC-Centro Ricerche Applicate s.r.l., 35132 Padova, Italy
- Up-Code s.r.l., 35132 Padova, Italy
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3
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Eddin FBK, Fen YW, Liew JYC, Daniyal WMEMM. Plasmonic Refractive Index Sensor Enhanced with Chitosan/Au Bilayer Thin Film for Dopamine Detection. BIOSENSORS 2022; 12:1124. [PMID: 36551091 PMCID: PMC9775628 DOI: 10.3390/bios12121124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Surface plasmonic sensors have received considerable attention, found extensive applications, and outperformed conventional optical sensors. In this work, biopolymer chitosan (CS) was used to prepare the bilayer structure (CS/Au) of a plasmonic refractive index sensor for dopamine (DA) detection. The sensing characteristics of the developed plasmonic sensor were evaluated. Increasing DA concentrations significantly shifted the SPR dips. The sensor exhibited stability and a refractive index sensitivity of 8.850°/RIU in the linear range 0.1 nM to 1 µM with a detection limit of 0.007 nM and affinity constant of 1.383 × 108 M-1. The refractive index and thickness of the CS/Au structure were measured simultaneously by fitting the obtained experimental findings to theoretical data based on Fresnel equations. The fitting yielded the refractive index values n (1.5350 ± 0.0001) and k (0.0150 ± 0.0001) for the CS layer contacting 0.1 nM of DA, and the thickness, d was (15.00 ± 0.01) nm. Then, both n and d values increased by increasing DA concentrations. In addition, the changes in the FTIR spectrum and the variations in sensor surface roughness and structure obtained by AFM analysis confirmed DA adsorption on the sensing layer. Based on these observations, CS/Au bilayer has enhanced the performance of this plasmonic sensor, which showed promising importance as a simple, low-cost, and reliable platform for DA sensing.
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Affiliation(s)
- Faten Bashar Kamal Eddin
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Yap Wing Fen
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
| | - Josephine Ying Chyi Liew
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
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4
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Potdar RP, Khollam YB, Shaikh SF, More PS, Rana AUHS. Polyvinylpyrrolidone-Capped Silver Nanoparticles for Highly Sensitive and Selective Optical Fiber-Based Ammonium Sensor. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193373. [PMID: 36234507 PMCID: PMC9565296 DOI: 10.3390/nano12193373] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 05/28/2023]
Abstract
Herein, aqueous ammonium sensing characteristics of polyvinylpyrrolidone (PVP) capped silver nanoparticles (Ag-NPs) coated optical fiber-based sensors are presented. The PVP-capped Ag-NPs were prepared using cold and modified polyol synthesis methods. Aqueous ammonium detection was carried out by the surface plasmon resonance (SPR) effect observed in the Ag-NPs coated optical fiber system. The effect of cold and modified polyol synthesis methods on optical sensing performance was studied. The optical fiber cladding was modified with PVP-capped Ag-NPs according to the standard protocol for sensing investigation. The probe sensing response was analyzed for varying concentrations of ammonium ions on red, green, and blue LEDs. The sensor characteristics, viz., sensing response, repeatability, calibration curve, and ambient light effect, were investigated for PVP capped Ag-NPs coated optical fiber-based sensor. The PVP capped Ag-NPs synthesized via the polyol synthesis method showed a detection limit of 48.9 mM, 1.33 mV/M sensitivity, and an excellent linear relationship (R2 = 0.9992) between voltage and ammonium ion concentration in the range of 0.054-13.4 M concentration. On the other hand, PVP capped Ag-NPs synthesized using the cold synthesis method showed a detection limit of 159.4 mM, a sensitivity of 0.06 mV/M, and a poor linear relationship (R2 = 0.4588) between voltage and ammonium ion concentration in the range of 0.054-13.4 M concentration. The results indicate that the PVP-capped Ag-NPs synthesized using the polyol synthesis method exhibit enhanced ammonium ion sensing compared to the cold synthesis method.
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Affiliation(s)
- Revati P. Potdar
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai 400032, India
| | - Yogesh B. Khollam
- Research Centre in Physics, Department of Physics, Baburaoji Gholap College, Sangvi, Pune 411027, India
| | - Shoyebmohamad. F. Shaikh
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh 11451, Saudi Arabia
| | - Pravin S. More
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai 400032, India
| | - Abu ul Hassan S. Rana
- Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
- Department of Obstetrics and Gynecology, The University of Melbourne, Parkville, VIC 3010, Australia
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5
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Das CM, Kong KV, Yong KT. Diagnostic plasmonic sensors: opportunities and challenges. Chem Commun (Camb) 2022; 58:9573-9585. [PMID: 35975603 DOI: 10.1039/d2cc03431j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The medical fraternity is currently burgeoned and stressed with a huge rush of patients who have inflammatory conditions, metabolite diseases, and cardiovascular diseases. In these circumstances, advanced sensing technologies could have a huge impact on the quality of life of patients. Given plasmonic resonance effects significantly improve the ability to rapidly and accurately detect biological markers, plasmonic technology is harnessed to develop a fast and accurate diagnosis that can provide timely intervention with the diseases and can also aid the recovery process by complementing the therapy stage. In this short review, we provide an overlook of how the field of plasmonic sensing has revolutionized the field of medical diagnostics. This article reviews the fundamentals and development of plasmonics. In addition, we highlight the sensitivity of various SPR and LSPR sensors. The chemistry for functionalizing plasmonic sensors is also discussed. This review also outlines some general suggestions for future directions that we feel might be useful to advance our understanding of the universe or speed up the development of plasmonic sensors in the future.
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Affiliation(s)
- Chandreyee Manas Das
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.,CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, 637553, Singapore
| | - Kien Voon Kong
- Department of Chemistry, National Taiwan University, Taipei City, Taiwan
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia. .,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia.,The Biophotonics and MechanoBioengineering Lab, The University of Sydney, Sydney, New South Wales 2006, Australia
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Park JH, Cho YW, Kim TH. Recent Advances in Surface Plasmon Resonance Sensors for Sensitive Optical Detection of Pathogens. BIOSENSORS 2022; 12:bios12030180. [PMID: 35323450 PMCID: PMC8946561 DOI: 10.3390/bios12030180] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 05/06/2023]
Abstract
The advancement of science and technology has led to the recent development of highly sensitive pathogen biosensing techniques. The effective treatment of pathogen infections requires sensing technologies to not only be sensitive but also render results in real-time. This review thus summarises the recent advances in optical surface plasmon resonance (SPR) sensor technology, which possesses the aforementioned advantages. Specifically, this technology allows for the detection of specific pathogens by applying nano-sized materials. This review focuses on various nanomaterials that are used to ensure the performance and high selectivity of SPR sensors. This review will undoubtedly accelerate the development of optical biosensing technology, thus allowing for real-time diagnosis and the timely delivery of appropriate treatments as well as preventing the spread of highly contagious pathogens.
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7
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Xiao C, Eriksson J, Suska A, Filippini D, Mak WC. Print-and-stick unibody microfluidics coupled surface plasmon resonance (SPR) chip for smartphone imaging SPR (Smart-iSRP). Anal Chim Acta 2022; 1201:339606. [DOI: 10.1016/j.aca.2022.339606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 01/18/2022] [Accepted: 02/12/2022] [Indexed: 11/24/2022]
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Wu Y, Zeng X, Gan Q. A Compact Surface Plasmon Resonance Biosensor for Sensitive Detection of Exosomal Proteins for Cancer Diagnosis. Methods Mol Biol 2022; 2393:3-14. [PMID: 34837171 DOI: 10.1007/978-1-0716-1803-5_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Exosomes are nanosized (50-150 nm) extracellular vesicles released by all types of cells in the body. They transport various biological molecules, such as DNAs, RNAs, proteins, and lipids from parent cells to recipient cells for intercellular communication. Exosomes, especially those from tumor cells, are actively involved in caner development, metastasis, and drug resistance. Recently, many studies have shown that exosomal proteins are promising biomarkers for cancer screening, early detection and prognosis. Among many detection techniques, surface plasmon resonance (SPR) is a highly sensitive, label-free, and real-time optical detection method. Commercial prism-based wavelength/angular-modulated SPR sensors afford high sensitivity and resolution, but their large footprint and high cost limit their adaptability for clinical settings. We have developed an intensity-modulated, compact SPR biosensor (25 cm × 10 cm × 25 cm) for the detection of exosomal proteins. We have demonstrated the potential application of the compact SPR biosensor in lung cancer diagnosis using exosomal epidermal growth factor receptor (EGFR) and programmed death-ligand 1 (PD-L1) as biomarkers. The compact SPR biosensor offers sensitive, simple, fast, user-friendly, and cost-effective detection of exosomal proteins, which may serve as an in vitro diagnostic test for cancer.
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Affiliation(s)
- Yun Wu
- Department of Biomedical Engineering, 332 Bonner Hall, University at Buffalo, The State University of New York, Buffalo, NY, USA.
| | - Xie Zeng
- Department of Electrical Engineering, 230 Davis Hall, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Qiaoqiang Gan
- Department of Electrical Engineering, 230 Davis Hall, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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9
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Das CM, Guo Y, Yang G, Kang L, Xu G, Ho H, Yong K. Gold Nanorod Assisted Enhanced Plasmonic Detection Scheme of COVID-19 SARS-CoV-2 Spike Protein. ADVANCED THEORY AND SIMULATIONS 2020; 3:2000185. [PMID: 33173847 PMCID: PMC7646005 DOI: 10.1002/adts.202000185] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/09/2020] [Indexed: 12/24/2022]
Abstract
The beautiful interplay between light and matter can give rise to many striking physical phenomena, surface plasmon resonance (SPR) being one of them. Plasmonic immunosensors monitor refractive index changes that occur as a result of specific ligand-analyte or antibody-antigen interactions taking place on the sensor surface. The coronavirus disease (COVID-19) pandemic has jeopardized the entire world and has resulted in economic slowdown of most countries. In this work, a model of a sandwich plasmonic biosensor that utilizes gold nanorods (Au NRs) for the detection of COVID-19 SARS-CoV-2 spike protein is presented. Simulation results for different prismatic configurations for the basic Kretschmann layout are presented. It is found that a BK7 glass prism-based SPR sensor has an incremental sensitivity of 111.11 deg RIU-1. Additionally, using Comsol Multiphysics the electric field enhancement observed for various aspect ratios and layouts of Au NRs are discussed in depth.
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Affiliation(s)
- Chandreyee Manas Das
- CINTRA CNRS/NTU/THALESUMI 3288Research Techno Plaza50 Nanyang DriveBorder X BlockSingapore637553Singapore
- School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Yan Guo
- School of AutomationHangzhou Dianzi UniversityHangzhouZhejiang310018China
| | - Guang Yang
- School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Lixing Kang
- CINTRA CNRS/NTU/THALESUMI 3288Research Techno Plaza50 Nanyang DriveBorder X BlockSingapore637553Singapore
- School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound ImagingDepartment of Biomedical EngineeringSchool of MedicineShenzhen UniversityShenzhen518060China
| | - Ho‐Pui Ho
- Department of Biomedical EngineeringThe Chinese University of Hong KongNew TerritoriesHong Kong SAR999077China
| | - Ken‐Tye Yong
- CINTRA CNRS/NTU/THALESUMI 3288Research Techno Plaza50 Nanyang DriveBorder X BlockSingapore637553Singapore
- School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Singapore
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10
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Development of a Portable SPR Sensor for Nucleic Acid Detection. MICROMACHINES 2020; 11:mi11050526. [PMID: 32455736 PMCID: PMC7281666 DOI: 10.3390/mi11050526] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/14/2020] [Accepted: 05/19/2020] [Indexed: 01/09/2023]
Abstract
Nucleic acid detection is of great significance in clinical diagnosis, environmental monitoring and food safety. Compared with the traditional nucleic acid amplification detection method, surface plasmon resonance (SPR) sensing technology has the advantages of being label-free, having simple operation, and providing real-time detection. However, the angle scanning system in many SPR angle modulation detection applications usually requires a high-resolution stepper motor and complex mechanical structure to adjust the angle. In this paper, a portable multi-angle scanning SPR sensor was designed. The sensor only uses one stepping motor to rotate a belt, and the belt pulls the mechanical linkages of incident light and reflected light to move in opposite directions for achieving the SPR angle scanning mode that keeps the incident angle and reflected angle equal. The sensor has an angle scanning accuracy of 0.002°, response sensitivity of 3.72 × 10−6 RIU (refractive index unit), and an angle scanning range of 30°–74°. The overall size of the system is only 480 mm × 150 mm × 180 mm. The portable SPR sensor was used to detect nucleic acid hybridization on a gold film chip modified with bovine serum albumin (BSA). The result revealed that the sensor had high sensitivity and fast response, and could successfully accomplish the hybridization detection of target DNA solution of 0.01 μmol/mL.
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11
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Masson JF. Portable and field-deployed surface plasmon resonance and plasmonic sensors. Analyst 2020; 145:3776-3800. [PMID: 32374303 DOI: 10.1039/d0an00316f] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Plasmonic sensors are ideally suited for the design of small, integrated, and portable devices that can be employed in situ for the detection of analytes relevant to environmental sciences, clinical diagnostics, infectious diseases, food, and industrial applications. To successfully deploy plasmonic sensors, scaled-down analytical devices based on surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) must integrate optics, plasmonic materials, surface chemistry, fluidics, detectors and data processing in a functional instrument with a small footprint. The field has significantly progressed from the implementation of the various components in specifically designed prism-based instruments to the use of nanomaterials, optical fibers and smartphones to yield increasingly portable devices, which have been shown for a number of applications in the laboratory and deployed on site for environmental, biomedical/clinical, and food applications. A roadmap to deploy plasmonic sensors is provided by reviewing the current successes and by laying out the directions the field is currently taking to increase the use of field-deployed plasmonic sensors at the point-of-care, in the environment and in industries.
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Affiliation(s)
- Jean-Francois Masson
- Departement de chimie, Centre Québécois sur les Matériaux Fonctionnels (CQMF) and Regroupement Québécois sur les Matériaux de Pointe (RQMP), Université de Montréal, CP 6128 Succ. Centre-Ville, Montreal, QC, CanadaH3C 3J7.
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12
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Implementing Morpholino-Based Nucleic Acid Sensing on a Portable Surface Plasmon Resonance Instrument for Future Application in Environmental Monitoring. SENSORS 2018; 18:s18103259. [PMID: 30274157 PMCID: PMC6210944 DOI: 10.3390/s18103259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 09/22/2018] [Accepted: 09/26/2018] [Indexed: 12/24/2022]
Abstract
A portable surface plasmon resonance (SPR) instrument was tested for the first time for the detection of oligonucleotide sequences derived from the 16S rRNA gene of Oleispira antarctica RB-8, a bioindicator species of marine oil contamination, using morpholino-functionalized sensor surfaces. We evaluated the stability and specificity of morpholino coated sensor surfaces and tested two signal amplification regimes: (1) sequential injection of sample followed by magnetic bead amplifier and (2) a single injection of magnetic bead captured oligo. We found that the sensor surfaces could be regenerated for at least 85 consecutive sample injections without significant loss of signal intensity. Regarding specificity, the assay clearly differentiated analytes with only one or two mismatches. Signal intensities of mismatch oligos were lower than the exact match target at identical concentrations down to 200 nM, in standard phosphate buffered saline with 0.1 % Tween-20 added. Signal amplification was achieved with both strategies; however, significantly higher response was observed with the sequential approach (up to 16-fold), where first the binding of biotin-probe-labeled target oligo took place on the sensor surface, followed by the binding of the streptavidin magnetic beads onto the immobilized targets. Our experiments so far indicate that a simple coating procedure in combination with a relatively cost-efficient magnetic-bead-based signal amplification will provide robust SPR based nucleic acid sensing down to 0.5 nM of a 45-nucleotide long oligo target (7.2 ng/mL).
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13
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Liu C, Zeng X, An Z, Yang Y, Eisenbaum M, Gu X, Jornet JM, Dy GK, Reid ME, Gan Q, Wu Y. Sensitive Detection of Exosomal Proteins via a Compact Surface Plasmon Resonance Biosensor for Cancer Diagnosis. ACS Sens 2018; 3:1471-1479. [PMID: 30019892 DOI: 10.1021/acssensors.8b00230] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Exosomes are small extracellular vesicles released by cells for cell-cell communication. They play important roles in cancer development, metastasis, and drug resistance. Exosomal proteins have been demonstrated by many studies as promising biomarkers for cancer screening, diagnosis, and monitoring. Among many detection techniques, surface plasmon resonance (SPR) is a highly sensitive, label-free, and real-time optical detection method. Commercial prism-based wavelength/angular-modulated SPR sensors afford high sensitivity and resolution, but their large footprint and high cost limit their adaptability for clinical settings. Recently, a nanoplasmonic exosome (nPLEX) assay was developed to detect exosomal proteins for ovarian cancer diagnosis. However, comparing with conventional SPR biosensors, the broad applications of nanoplasmonic biosensors are limited by the difficult and expensive fabrication of nanostructures. We have developed an intensity-modulated, compact SPR biosensor (25 cm × 10 cm × 25 cm) which uses a conventional SPR sensing mechanism and does not require nanostructure fabrication. Calibration from glycerol showed that the compact SPR biosensor offered sensitivity of 9.258 × 103%/RIU and resolution of 8.311 × 10-6 RIU. We have demonstrated the feasibility of the compact SPR biosensor in lung cancer diagnosis using exosomal epidermal growth factor receptor (EGFR) and programmed death-ligand 1 (PD-L1) as biomarkers. It detected a higher level of exosomal EGFR from A549 nonsmall cell lung cancer (NSCLC) cells than BEAS-2B normal cells. With human serum samples, the compact SPR biosensor detected similar levels of exosomal EGFR in NSCLC patients and normal controls, and higher expression of exosomal PD-L1 in NSCLC patients than normal controls. The compact SPR biosensor showed higher detection sensitivity than ELISA and similar sensing accuracy as ELISA. It is a simple and user-friendly sensing platform, which may serve as an in vitro diagnostic test for cancer.
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Affiliation(s)
| | | | | | | | | | - Xiaodong Gu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, 200040 China
| | | | - Grace K. Dy
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14263, United States
| | - Mary E. Reid
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14263, United States
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14
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Kumar PKR. Monitoring Intact Viruses Using Aptamers. BIOSENSORS-BASEL 2016; 6:bios6030040. [PMID: 27527230 PMCID: PMC5039659 DOI: 10.3390/bios6030040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 07/27/2016] [Accepted: 07/29/2016] [Indexed: 12/13/2022]
Abstract
Viral diagnosis and surveillance are necessary steps in containing the spread of viral diseases, and they help in the deployment of appropriate therapeutic interventions. In the past, the commonly employed viral detection methods were either cell-culture or molecule-level assays. Most of these assays are laborious and expensive, require special facilities, and provide a slow diagnosis. To circumvent these limitations, biosensor-based approaches are becoming attractive, especially after the successful commercialization of glucose and other biosensors. In the present article, I have reviewed the current progress using the biosensor approach for detecting intact viruses. At the time of writing this review, three types of bioreceptor surfaces (antibody-, glycan-, and aptamer-based) have been explored on different sensing platforms for detecting intact viruses. Among these bioreceptors, aptamer-based sensors have been increasingly explored for detecting intact viruses using surface plasmon resonance (SPR) and other platforms. Special emphasis is placed on the aptamer-based SPR platform in the present review.
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Affiliation(s)
- Penmetcha K R Kumar
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba City 305-8566, Ibaraki, Japan.
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Sanders M, McPartlin D, Moran K, Guo Y, Eeckhout M, O'Kennedy R, De Saeger S, Maragos C. Comparison of Enzyme-Linked Immunosorbent Assay, Surface Plasmon Resonance and Biolayer Interferometry for Screening of Deoxynivalenol in Wheat and Wheat Dust. Toxins (Basel) 2016; 8:103. [PMID: 27077883 PMCID: PMC4848629 DOI: 10.3390/toxins8040103] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/28/2016] [Accepted: 03/30/2016] [Indexed: 11/16/2022] Open
Abstract
A sample preparation method was developed for the screening of deoxynivalenol (DON) in wheat and wheat dust. Extraction was carried out with water and was successful due to the polar character of DON. For detection, an enzyme-linked immunosorbent assay (ELISA) was compared to the sensor-based techniques of surface plasmon resonance (SPR) and biolayer interferometry (BLI) in terms of sensitivity, affinity and matrix effect. The matrix effects from wheat and wheat dust using SPR were too high to further use this screenings method. The preferred ELISA and BLI methods were validated according to the criteria established in Commission Regulation 519/2014/EC and Commission Decision 2002/657/EC. A small survey was executed on 16 wheat lots and their corresponding dust samples using the validated ELISA method. A linear correlation (r = 0.889) was found for the DON concentration in dust versus the DON concentration in wheat (LOD wheat: 233 μg/kg, LOD wheat dust: 458 μg/kg).
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Affiliation(s)
- Melanie Sanders
- Mycotoxin Prevention and Applied Microbiology Research Unit, United States Department of Agriculture-Agricultural Research Service-National Center for Agricultural Utilization Research (USDA-ARS-NCAUR), 1815 N. University Street, Peoria, IL 61604, USA.
| | - Daniel McPartlin
- School of Biotechnology, National Centre for Sensor Research and Biomedical Diagnostic Institute, Dublin City University, Dublin 9, Ireland.
| | - Kara Moran
- School of Biotechnology, National Centre for Sensor Research and Biomedical Diagnostic Institute, Dublin City University, Dublin 9, Ireland.
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China.
| | - Mia Eeckhout
- Department of Applied Biosciences, Faculty of Bioscience Engineering, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium.
| | - Richard O'Kennedy
- School of Biotechnology, National Centre for Sensor Research and Biomedical Diagnostic Institute, Dublin City University, Dublin 9, Ireland.
| | - Sarah De Saeger
- Department of Bioanalysis, Laboratory of Food Analysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - Chris Maragos
- Mycotoxin Prevention and Applied Microbiology Research Unit, United States Department of Agriculture-Agricultural Research Service-National Center for Agricultural Utilization Research (USDA-ARS-NCAUR), 1815 N. University Street, Peoria, IL 61604, USA.
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Applicability of a novel immunoassay based on surface plasmon resonance for the diagnosis of Chagas disease. Clin Chim Acta 2015; 454:39-45. [PMID: 26731593 DOI: 10.1016/j.cca.2015.12.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/14/2015] [Accepted: 12/18/2015] [Indexed: 11/22/2022]
Abstract
BACKGROUND We defined the methodological criteria for the interpretation of the results provided by a novel immunoassay based on surface plasmon resonance (SPR) to detect antibodies anti-Trypanosoma cruzi in human sera (SPRCruzi). Then, we evaluated its applicability as a diagnostic tool for Chagas disease. METHODS To define the cut-off point and serum dilution factor, 57 samples were analyzed at SPRCruzi and the obtained values of SPR angle displacement (ΔθSPR) were submitted to statistical analysis. Adopting the indicated criteria, its performance was evaluated into a wide panel of samples, being 99 Chagas disease patients, 30 non-infected subjects and 42 with other parasitic/infectious diseases. In parallel, these samples were also analyzed by ELISA. RESULTS Our data demonstrated that 1:320 dilution and cut-off point at ∆θSPR=17.2 m° provided the best results. Global performance analysis demonstrated satisfactory sensitivity (100%), specificity (97.2%), positive predictive value (98%), negative predictive value (100%) and global accuracy (99.6%). ELISA and SPRCruzi showed almost perfect agreement, mainly between chagasic and non-infected individuals. However, the new immunoassay was better in discriminate Chagas disease from other diseases. CONCLUSION This work demonstrated the applicability of SPRCruzi as a feasible, real time, label free, sensible and specific methodology for the diagnosis of Chagas disease.
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Surface plasmon resonance: a versatile technique for biosensor applications. SENSORS 2015; 15:10481-510. [PMID: 25951336 PMCID: PMC4481982 DOI: 10.3390/s150510481] [Citation(s) in RCA: 567] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/24/2015] [Accepted: 04/28/2015] [Indexed: 02/07/2023]
Abstract
Surface plasmon resonance (SPR) is a label-free detection method which has emerged during the last two decades as a suitable and reliable platform in clinical analysis for biomolecular interactions. The technique makes it possible to measure interactions in real-time with high sensitivity and without the need of labels. This review article discusses a wide range of applications in optical-based sensors using either surface plasmon resonance (SPR) or surface plasmon resonance imaging (SPRI). Here we summarize the principles, provide examples, and illustrate the utility of SPR and SPRI through example applications from the biomedical, proteomics, genomics and bioengineering fields. In addition, SPR signal amplification strategies and surface functionalization are covered in the review.
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Xiao-Hong Z, Lan-Hua L, Wei-Qi X, Bao-Dong S, Jian-Wu S, Miao H, Han-Chang S. A reusable evanescent wave immunosensor for highly sensitive detection of bisphenol A in water samples. Sci Rep 2014; 4:4572. [PMID: 24699239 PMCID: PMC3975238 DOI: 10.1038/srep04572] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 03/12/2014] [Indexed: 12/17/2022] Open
Abstract
This paper proposed a compact and portable planar waveguide evanescent wave immunosensor (EWI) for highly sensitive detection of BPA. The incident light is coupled into the planar waveguide chip via a beveled angle through undergoing total internal reflection, where the evanescent wave field forms and excites the binding fluorophore-tagged antibodies on the chip surface. Typical calibration curves obtained for BPA has detection limits of 0.03 μg/L. Linear response for BPA ranged from 0.124 μg/L-9.60 μg/L with 50% inhibition concentration for BPA of 1.09 ± 0.25 μg/L. The regeneration of the planar optical waveguide chip allows the performance of more than 300 assay cycles within an analysis time of about 20 min for each assay cycle. By application of effective pretreatment procedure, the recoveries of BPA in real water samples gave values from 88.3% ± 8.5% to 103.7% ± 3.5%, confirming its application potential in the measurement of BPA in reality.
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Affiliation(s)
- Zhou Xiao-Hong
- 1] State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China [2] Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, Nanjing, China
| | - Liu Lan-Hua
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China
| | - Xu Wei-Qi
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China
| | - Song Bao-Dong
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China
| | - Sheng Jian-Wu
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China
| | - He Miao
- 1] State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China [2] Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, Nanjing, China
| | - Shi Han-Chang
- 1] State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 10084, China [2] Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, Nanjing, China
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20
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Mandenius CF. Design of Monitoring and Sensor Systems for Bioprocesses by Biomechatronic Methodology. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201100553] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Bedford EE, Spadavecchia J, Pradier CM, Gu FX. Surface plasmon resonance biosensors incorporating gold nanoparticles. Macromol Biosci 2012; 12:724-39. [PMID: 22416018 DOI: 10.1002/mabi.201100435] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Revised: 12/22/2011] [Indexed: 01/13/2023]
Abstract
SPR biosensing is increasingly popular for the detection of a multitude of biomolecules. It offers label-free detection and study of proteins, nucleic acids, and other biomolecules in real time. A recent trend involves incorporation of AuNPs, either within the sensing surface itself or as signal enhancing tagging molecules. The importance of AuNP and detecting agent spacing is described and techniques using macromolecular spacing aids are highlighted. Recent methods to enhance SPR detection capabilities using gold nanoparticles are reviewed, as well as device fabrication and the results of incorporation. SPR detection is a highly versatile method for the detection of biomolecules and, with the incorporation of AuNPs, shows promise in extending it to a number of new applications.
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Affiliation(s)
- Erin E Bedford
- Laboratoire de Réactivité de Surface, Université Pierre et Marie Curie, CNRS, UMR 7197, 3 Rue Galilée, 94200 Ivry-sur-Seine, France
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Marusov G, Sweatt A, Pietrosimone K, Benson D, Geary SJ, Silbart LK, Challa S, Lagoy J, Lawrence DA, Lynes MA. A microarray biosensor for multiplexed detection of microbes using grating-coupled surface plasmon resonance imaging. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:348-59. [PMID: 22029256 PMCID: PMC3312245 DOI: 10.1021/es201239f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Grating-coupled surface plasmon resonance imaging (GCSPRI) utilizes an optical diffraction grating embossed on a gold-coated sensor chip to couple collimated incident light into surface plasmons. The angle at which this coupling occurs is sensitive to the capture of analyte at the chip surface. This approach permits the use of disposable biosensor chips that can be mass-produced at low cost and spotted in microarray format to greatly increase multiplexing capabilities. The current GCSPRI instrument has the capacity to simultaneously measure binding at over 1000 unique, discrete regions of interest (ROIs) by utilizing a compact microarray of antibodies or other specific capture molecules immobilized on the sensor chip. In this report, we describe the use of GCSPRI to directly detect multiple analytes over a large dynamic range, including soluble protein toxins, bacterial cells, and viruses, in near real-time. GCSPRI was used to detect a variety of agents that would be useful for diagnostic and environmental sensing purposes, including macromolecular antigens, a nontoxic form of Pseudomonas aeruginosa exotoxin A (ntPE), Bacillus globigii, Mycoplasma hyopneumoniae, Listeria monocytogenes, Escherichia coli, and M13 bacteriophage. These studies indicate that GCSPRI can be used to simultaneously assess the presence of toxins and pathogens, as well as quantify specific antibodies to environmental agents, in a rapid, label-free, and highly multiplexed assay requiring nanoliter amounts of capture reagents.
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Affiliation(s)
- Gregory Marusov
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Andrew Sweatt
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Kathryn Pietrosimone
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - David Benson
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Steven J. Geary
- Department of Pathobiology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
- The Center of Excellence For Vaccine Research, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Lawrence K. Silbart
- Department of Allied Health Sciences, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
- The Center of Excellence For Vaccine Research, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Sreerupa Challa
- Department of Allied Health Sciences, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
- The Center of Excellence For Vaccine Research, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | - Jacqueline Lagoy
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
| | | | - Michael A. Lynes
- Department of Molecular and Cell Biology, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
- The Center of Excellence For Vaccine Research, The University of Connecticut, 91 North Eagleville Road, Storrs, CT 06269-3125
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Liu Z, Shi H, Liu L, Deng S, Ji Y, Ma S, Ma H, He Y. Line-monitoring, hyperspectral fluorescence setup for simultaneous multi-analyte biosensing. SENSORS 2011; 11:10038-47. [PMID: 22346627 PMCID: PMC3274269 DOI: 10.3390/s111110038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 10/05/2011] [Accepted: 10/17/2011] [Indexed: 12/02/2022]
Abstract
Conventional fluorescence scanners utilize multiple filters to distinguish different fluorescent labels, and problems arise because of this filter-based mechanism. In this work we propose a line-monitoring, hyperspectral fluorescence technique which is designed and optimized for applications in multi-channel microfluidic systems. In contrast to the filter-based mechanism, which only records fluorescent intensities, the hyperspectral technique records the full spectrum for every point on the sample plane. Multivariate data exploitation is then applied to spectra analysis to determine ratios of different fluorescent labels and eliminate unwanted artifacts. This sensor is designed to monitor multiple fluidic channels simultaneously, providing the potential for multi-analyte biosensing. The detection sensitivity is approximately 0.81 fluors/μm2, and this sensor is proved to act with a good homogeneity. Finally, a model experiment of detecting short oligonucleotides has demonstrated the biomedical application of this hyperspectral fluorescence biosensor.
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Affiliation(s)
- Zhiyi Liu
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Heng Shi
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Le Liu
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Sunan Deng
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Yanhong Ji
- MOE Key laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, China; E-Mail: (Y.J.)
| | - Suihua Ma
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Hui Ma
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
| | - Yonghong He
- Laboratory of Optical Imaging and Sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; E-Mails: (Z.L.); (H.S.); (L.L.); (S.D.); (S.M.); (H.M.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-755-2603-6873; Fax: +86-755-2603-6395
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24
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Recent developments in handheld and portable optosensing—A review. Anal Chim Acta 2011; 696:27-46. [DOI: 10.1016/j.aca.2011.04.005] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 04/08/2011] [Accepted: 04/10/2011] [Indexed: 12/12/2022]
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25
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Cretenet M, Even S, Le Loir Y. Unveiling Staphylococcus aureus enterotoxin production in dairy products: a review of recent advances to face new challenges. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s13594-011-0014-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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26
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Daghestani HN, Day BW. Theory and applications of surface plasmon resonance, resonant mirror, resonant waveguide grating, and dual polarization interferometry biosensors. SENSORS (BASEL, SWITZERLAND) 2010; 10:9630-46. [PMID: 22163431 PMCID: PMC3230998 DOI: 10.3390/s101109630] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 09/13/2010] [Accepted: 10/28/2010] [Indexed: 11/16/2022]
Abstract
Biosensors have been used extensively in the scientific community for several purposes, most notably to determine association and dissociation kinetics, protein-ligand, protein-protein, or nucleic acid hybridization interactions. A number of different types of biosensors are available in the field, each with real or perceived benefits over the others. This review discusses the basic theory and operational arrangements of four commercially available types of optical biosensors: surface plasmon resonance, resonant mirror, resonance waveguide grating, and dual polarization interferometry. The different applications these techniques offer are discussed from experiments and results reported in recently published literature. Additionally, recent advancements or modifications to the current techniques are also discussed.
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Affiliation(s)
- Hikmat N. Daghestani
- Department of Structural Biology, University of Pittsburgh, BST3 10017, 3501 Fifth Ave, Pittsburgh PA, 15213, USA; E-Mail:
| | - Billy W. Day
- Departments of Pharmaceutical Sciences and of Chemistry, University of Pittsburgh, BST3 10017, 3501 Fifth Ave, Pittsburgh PA, 15213, USA
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27
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Yang M, Bruck HA, Kostov Y, Rasooly A. Biological semiconductor based on electrical percolation. Anal Chem 2010; 82:3567-72. [PMID: 20361741 DOI: 10.1021/ac902644z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed a novel biological semiconductor (BSC) based on electrical percolation through a multilayer three-dimensional carbon nanotube-antibody bionanocomposite network, which can measure biological interactions directly and electronically. In electrical percolation, the passage of current through the conductive network is dependent upon the continuity of the network. Molecular interactions, such as binding of antigens to the antibodies, disrupt the network continuity causing increased resistance of the network. A BSC is fabricated by immobilizing a prefunctionalized single-walled carbon nanotubes (SWNTs)-antibody bionanocomposite directly on a poly(methyl methacrylate) (PMMA) surface (also known as plexiglass or acrylic). We used the BSC for direct (label-free) electronic measurements of antibody-antigen binding, showing that, at slightly above the electrical percolation threshold of the network, binding of a specific antigen dramatically increases the electrical resistance. Using anti-staphylococcal enterotoxin B (SEB) IgG as a "gate" and SEB as an "actuator", we demonstrated that the BSC was able to detect SEB at concentrations of 1 ng/mL. The new BSCs may permit assembly of multiple sensors on the same chip to create "biological central processing units (CPUs)" with multiple BSC elements, capable of processing and sorting out information on multiple analytes simultaneously.
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Affiliation(s)
- Minghui Yang
- Center for Advanced Sensor Technology, University of Maryland, Baltimore County, Maryland 21250, USA
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28
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Yang M, Sun S, Bruck HA, Kostov Y, Rasooly A. Electrical percolation-based biosensor for real-time direct detection of staphylococcal enterotoxin B (SEB). Biosens Bioelectron 2010; 25:2573-8. [PMID: 20447819 PMCID: PMC2996829 DOI: 10.1016/j.bios.2010.04.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 04/14/2010] [Accepted: 04/15/2010] [Indexed: 11/20/2022]
Abstract
Electrical percolation-based biosensing is a new technology. This is the first report of an electrical percolation-based biosensor for real-time detection. The label-free biosensor is based on electrical percolation through a single-walled carbon nanotubes (SWNTs)-antibody complex that forms a network functioning as a "Biological Semiconductor" (BSC). The conductivity of a BSC is directly related to the number of contacts facilitated by the antibody-antigen "connectors" within the SWNT network. BSCs are fabricated by immobilizing a pre-functionalized SWNTs-antibody complex directly on a poly(methyl methacrylate) (PMMA) and polycarbonate (PC) surface. Each BSC is connected via silver electrodes to a computerized ohmmeter, thereby enabling a continuous electronic measurement of molecular interactions (e.g. antibody-antigen binding) via the change in resistance. Using anti-staphylococcal enterotoxin B (SEB) IgG to functionalize the BSC, we demonstrate that the biosensor was able to detect SEB at concentrations as low as 5 ng/mL at a signal to baseline (S/B) ratio of 2. Such measurements were performed on the chip in wet conditions. The actuation of the chip by SEB is immediate, permitting real-time signal measurements. In addition to this "direct" label-free detection mode, a secondary antibody can be used to "label" the target molecule bound to the BSC in a manner analogous to an immunological sandwich "indirect" detection-type assay. Although a secondary antibody is not needed for direct detection, the indirect mode of detection may be useful as an additional measurement to verify or amplify signals from direct detection in clinical, food safety and other critical assays. The BSC was used to measure SEB both in buffer and in milk, a complex matrix, demonstrating the potential of electrical percolation-based biosensors for real-time label-free multi-analyte detection in clinical and complex samples. Assembly of BSCs is simple enough that multiple sensors can be fabricated on the same chip, thereby creating "Biological Central Processing Units (BCPUs)" capable of parallel processing and sorting out information on multiple analytes simultaneously which may be used for complex analysis and for point of care diagnostics.
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Affiliation(s)
- Minghui Yang
- Center for Advanced Sensor Technology, University of Maryland Baltimore County, MD 21250
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Steven Sun
- Center for Advanced Sensor Technology, University of Maryland Baltimore County, MD 21250
- Division of Biology, Office of Science and Engineering, FDA, Silver Spring, MD 20993
| | - Hugh Alan Bruck
- University of Maryland College Park (UMCP), College Park MD 20742
| | - Yordan Kostov
- Center for Advanced Sensor Technology, University of Maryland Baltimore County, MD 21250
| | - Avraham Rasooly
- Division of Biology, Office of Science and Engineering, FDA, Silver Spring, MD 20993
- National Cancer Institute, Bethesda, MD 20892
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Gao H, Yang JC, Lin JY, Stuparu AD, Lee MH, Mrksich M, Odom TW. Using the angle-dependent resonances of molded plasmonic crystals to improve the sensitivities of biosensors. NANO LETTERS 2010; 10:2549-54. [PMID: 20509678 DOI: 10.1021/nl101165r] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper describes how angle-dependent resonances from molded plasmonic crystals can be used to improve real-time biosensing. First, an inexpensive and massively parallel approach to create single-use, two-dimensional metal nanopyramidal gratings was developed. Second, although constant in bulk dielectric environments, the sensitivities (resonance wavelength shift and resonance width) of plasmonic crystals to adsorbed molecular layers of varying thickness were found to depend on incident excitation angle. Third, protein binding at dilute concentrations of protein was carried out at an angle that optimized the signal to noise of our plasmonic sensing platform. This angle-dependent sensitivity, which is intrinsic to grating-based sensors, is a critical parameter that can assist in maximizing signal to noise.
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Affiliation(s)
- Hanwei Gao
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
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Gan Q, Bartoli FJ. Surface-plasmon-coupled semiconductor diode-laser package for refractive index sensing. OPTICS LETTERS 2009; 34:2180-2182. [PMID: 19823541 DOI: 10.1364/ol.34.002180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We combine plasmonic grating structures with semiconductor laser-diode packages to realize a prototype of miniaturized chemical/biosensor. The advantages of such a device include compact size, low cost, energy effectiveness, long device lifetime, stable performance, and label-free sensing, which should have commercialization potential.
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Affiliation(s)
- Qiaoqiang Gan
- Center for Optical Technologies, Lehigh University, Bethlehem, PA 18015, USA.
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Yang M, Kostov Y, Bruck HA, Rasooly A. Gold nanoparticle-based enhanced chemiluminescence immunosensor for detection of Staphylococcal Enterotoxin B (SEB) in food. Int J Food Microbiol 2009; 133:265-71. [PMID: 19540011 DOI: 10.1016/j.ijfoodmicro.2009.05.029] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 05/26/2009] [Accepted: 05/27/2009] [Indexed: 10/20/2022]
Abstract
Staphylococcal enterotoxins (SEs) are major cause of foodborne diseases, so sensitive detection (<1 ng/ml) methods are needed for SE detection in food. The surface area, geometric and physical properties of gold nanoparticles make them well-suited for enhancing interactions with biological molecules in assays. To take advantage of the properties of gold nanoparticles for immunodetection, we have developed a gold nanoparticle-based enhanced chemiluminescence (ECL) immunosensor for detection of Staphylococcal Enterotoxin B (SEB) in food. Anti-SEB primary antibodies were immobilized onto a gold nanoparticle surface through physical adsorption and then the antibody-gold nanoparticle mixture was immobilized onto a polycarbonate surface. SEB was detected by a "sandwich-type" ELISA assay on the polycarbonate surface with a secondary antibody and ECL detection. The signal from ECL was read using a point-of-care detector based on a cooled charge-coupled device (CCD) sensor or a plate reader. The system was used to test for SEB in buffer and various foods (mushrooms, tomatoes, and baby food meat). The limit of detection was found to be approximately 0.01 ng/mL, which is approximately 10 times more sensitive than traditional ELISA. The gold nanoparticles were relatively easy to use for antibody immobilization because of their physical adsorption mechanism; no other reagents were required for immobilization. The use of our simple and inexpensive detector combined with the gold nanoparticle-based ECL method described here is adaptable to simplify and increase sensitivity of any immunological assay and for point-of-care diagnostics.
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Affiliation(s)
- Minghui Yang
- Center for Advanced Sensor Technology, University of Maryland Baltimore County, MD 21250, USA
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DONG Z, HUANG G, XU S, DENG C, ZHU J, CHEN S, YANG X, ZHAO S. Real-time and label-free detection of chloramphenicol residues with specific molecular interaction. J Microsc 2009; 234:255-61. [DOI: 10.1111/j.1365-2818.2009.03175.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Toxin detection by surface plasmon resonance. SENSORS 2009; 9:1339-54. [PMID: 22573957 PMCID: PMC3345861 DOI: 10.3390/s9031339] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 01/19/2009] [Accepted: 02/20/2009] [Indexed: 11/17/2022]
Abstract
Significant efforts have been invested in the past years for the development of analytical methods for fast toxin detection in food and water. Immunochemical methods like ELISA, spectroscopy and chromatography are the most used in toxin detection. Different methods have been linked, e.g. liquid chromatography and mass spectrometry (LC-MS), in order to detect as low concentrations as possible. Surface plasmon resonance (SPR) is one of the new biophysical methods which enables rapid toxin detection. Moreover, this method was already included in portable sensors for on-site determinations. In this paper we describe some of the most common methods for toxin detection, with an emphasis on SPR.
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A rapid serological assay for prediction of Salmonella infection status in slaughter pigs using surface plasmon resonance. J Microbiol Methods 2008; 75:545-50. [DOI: 10.1016/j.mimet.2008.08.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 08/19/2008] [Accepted: 08/29/2008] [Indexed: 11/21/2022]
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Piliarik M, Vala M, Tichý I, Homola J. Compact and low-cost biosensor based on novel approach to spectroscopy of surface plasmons. Biosens Bioelectron 2008; 24:3430-5. [PMID: 19109004 DOI: 10.1016/j.bios.2008.11.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 10/13/2008] [Accepted: 11/05/2008] [Indexed: 11/25/2022]
Abstract
A high-performance surface plasmon resonance (SPR) sensor based on a novel approach to spectroscopy of surface plasmons is reported. This approach employs a special diffraction grating structure (referred to as surface plasmon resonance coupler and disperser, SPRCD) which simultaneously couples light into a surface plasmon and disperses the diffracted light for spectral readout of SPR signal. The developed SPRCD sensor consists of a miniature cartridge integrating the diffraction grating and microfluidics and a compact optical system which simultaneously acquires data from four independent sensing channels in the cartridge. It is demonstrated that the SPRCD sensor is able to measure bulk refractive index changes as small as 3 x 10(-7) RIU (refractive index units) and to detect short oligonucleotides in concentrations down to 200 pM.
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Affiliation(s)
- Marek Piliarik
- Institute of Photonics and Electronics ASCR, Chaberská 57, CZ-18251 Prague, Czech Republic
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36
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Yang M, Kostov Y, Bruck HA, Rasooly A. Carbon nanotubes with enhanced chemiluminescence immunoassay for CCD-based detection of Staphylococcal enterotoxin B in food. Anal Chem 2008; 80:8532-7. [PMID: 18855418 PMCID: PMC2845180 DOI: 10.1021/ac801418n] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enhanced chemiluminescence (ECL) detection can significantly enhance the sensitivity of immunoassays but often requires expensive and complex detectors. The need for these detectors limits broader use of ECL in immunoassay applications. To make ECL more practical for immunoassays, we utilize a simple cooled charge-coupled device (CCD) detector combined with carbon nanotubes (CNTs) for primary antibody immobilization to develop a simple and portable point-of-care immunosensor. This combination of ECL, CNT, and CCD detector technologies is used to improve the detection of Staphylococcal enterotoxin B (SEB) in food. Anti-SEB primary antibodies were immobilized onto the CNT surface, and the antibody-nanotube mixture was immobilized onto a polycarbonate surface. SEB was then detected by an ELISA assay on the CNT-polycarbonate surface with an ECL assay. SEB in buffer, soy milk, apple juice, and meat baby food was assayed with a LOD of 0.01 ng/mL using our CCD detector, a level similar to the detection limit obtained with a fluorometric detector when using the CNTs. This level is far more sensitive than the conventional ELISA, which has a LOD of approximately 1 ng/mL. Our simple, versatile, and inexpensive point-of-care immunosensor combined with the CNT-ECL immunoassay method described in this work can also be used to simplify and increase sensitivity for many other types of diagnostics and detection assays.
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Affiliation(s)
| | | | | | - Avraham Rasooly
- To whom correspondence should be addressed. Mail: NIH/NCI, 6130 Executive Blvd. EPN, Room 6035A, Rockville, MD 20852. Phone: (301) 402-4185. Fax: (301) 402-7819.
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Kite-Powell HL, Fleming LE, Backer LC, Faustman EM, Hoagland P, Tsuchiya A, Younglove LR, Wilcox BA, Gast RJ. Linking the oceans to public health: current efforts and future directions. Environ Health 2008; 7 Suppl 2:S6. [PMID: 19025677 PMCID: PMC2586713 DOI: 10.1186/1476-069x-7-s2-s6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We review the major linkages between the oceans and public health, focusing on exposures and potential health effects due to anthropogenic and natural factors including: harmful algal blooms, microbes, and chemical pollutants in the oceans; consumption of seafood; and flooding events. We summarize briefly the current state of knowledge about public health effects and their economic consequences; and we discuss priorities for future research.We find that:* There are numerous connections between the oceans, human activities, and human health that result in both positive and negative exposures and health effects (risks and benefits); and the study of these connections comprises a new interdisciplinary area, "oceans and human health."* The state of present knowledge about the linkages between oceans and public health varies. Some risks, such as the acute health effects caused by toxins associated with shellfish poisoning and red tide, are relatively well understood. Other risks, such as those posed by chronic exposure to many anthropogenic chemicals, pathogens, and naturally occurring toxins in coastal waters, are less well quantified. Even where there is a good understanding of the mechanism for health effects, good epidemiological data are often lacking. Solid data on economic and social consequences of these linkages are also lacking in most cases.* The design of management measures to address these risks must take into account the complexities of human response to warnings and other guidance, and the economic tradeoffs among different risks and benefits. Future research in oceans and human health to address public health risks associated with marine pathogens and toxins, and with marine dimensions of global change, should include epidemiological, behavioral, and economic components to ensure that resulting management measures incorporate effective economic and risk/benefit tradeoffs.
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Affiliation(s)
- Hauke L Kite-Powell
- Marine Policy Center, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Lora E Fleming
- Departments of Epidemiology & Public Health and Marine Biology & Fisheries, Miller School of Medicine and Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Clinical Research Building, 10th Floor (R669), 1120 NW 14th Street, Miami, Florida, USA
| | - Lorraine C Backer
- National Center for Environmental Health, US Centers for Disease Control and Prevention, 4770 Buford Highway NE, MS F-57, Chamblee, Georgia, USA
| | - Elaine M Faustman
- Center on Human Development and Disability, University of Washington, Seattle, Washington, USA
- Pacific Northwest Center for Human Health and Ocean Studies, Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, Washington, USA
| | - Porter Hoagland
- Marine Policy Center, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Ami Tsuchiya
- Pacific Northwest Center for Human Health and Ocean Studies, Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, Washington, USA
| | - Lisa R Younglove
- Pacific Northwest Center for Human Health and Ocean Studies, Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, Washington, USA
| | - Bruce A Wilcox
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - Rebecca J Gast
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
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Skottrup PD, Nicolaisen M, Justesen AF. Towards on-site pathogen detection using antibody-based sensors. Biosens Bioelectron 2008; 24:339-48. [PMID: 18675543 DOI: 10.1016/j.bios.2008.06.045] [Citation(s) in RCA: 264] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Revised: 06/12/2008] [Accepted: 06/26/2008] [Indexed: 11/26/2022]
Abstract
In this paper, the recent progress within biosensors for plant pathogen detection will be reviewed. Bio-recognition layers on sensors can be designed in various ways, however the most popular approach is to immobilise antibodies for specific capture of analytes. Focus will be put on antibody surface-immobilisation strategies as well as the use of antibodies in the widely used sensors, quartz crystal microbalance, surface plasmon resonance and cantilevers. We will describe the available data on antibody-based plant pathogen detection and furthermore use examples from detection of the pathogens Salmonella, Listeria monocytogenes, Streptococcus mutans, Bacillus cereus, Bacillus anthracis, Campylobacter and Escherichia coli. We will touch upon optimal assay design and further discuss the strengths and limitations of current sensor technologies for detection of viruses, bacteria and fungi.
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Affiliation(s)
- Peter Durand Skottrup
- Department of Micro and Nanotechnology, DTU Nanotech, Technical University of Denmark, Ørsteds Plads, Kgs Lyngby, Denmark.
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Feltis BN, Sexton BA, Glenn FL, Best MJ, Wilkins M, Davis TJ. A hand-held surface plasmon resonance biosensor for the detection of ricin and other biological agents. Biosens Bioelectron 2007; 23:1131-6. [PMID: 18155516 DOI: 10.1016/j.bios.2007.11.005] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Revised: 10/17/2007] [Accepted: 11/02/2007] [Indexed: 01/16/2023]
Abstract
There is an ongoing need for field-deployable biosensor devices. We have constructed a fully self-contained, hand-held biosensor, based on the surface plasmon resonance technique. The dimensions of the sensor unit are 15 x 8 cm, the weight is 600 g and it is powered by a 9 V battery. We have characterised the responsiveness of the sensor using calibrated sucrose solutions and were able to measure changes as small as 3.3 x 10(-6) refractive index units. To demonstrate functionality of the sensor, we have prepared surfaces with an antibody fragment specific for the biological toxin ricin. We were able to detect ricin at 200 ng/mL in 10 min, which is approximately 2500 times less than the minimum lethal dose. We were also able to verify positive binding within a second 10 min window. This sensor demonstrates important steps required for the development of fully integrated, hand-held sensor devices and will form the basis of a multi-analyte system, to be developed in the near future. It also represents the first completely hand-held SPR device, not requiring external power or a computer connection to operate.
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Affiliation(s)
- B N Feltis
- CSIRO Materials Science and Engineering, Clayton, Victoria, Australia.
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40
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Enabling Sensor Technologies for the Quantitative Evaluation of Engineered Tissue. Ann Biomed Eng 2007; 36:30-40. [DOI: 10.1007/s10439-007-9399-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Accepted: 10/23/2007] [Indexed: 10/22/2022]
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41
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Badihi-Mossberg M, Buchner V, Rishpon J. Electrochemical Biosensors for Pollutants in the Environment. ELECTROANAL 2007. [DOI: 10.1002/elan.200703946] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nanduri V, Bhunia AK, Tu SI, Paoli GC, Brewster JD. SPR biosensor for the detection of L. monocytogenes using phage-displayed antibody. Biosens Bioelectron 2007; 23:248-52. [PMID: 17512186 DOI: 10.1016/j.bios.2007.04.007] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Revised: 03/29/2007] [Accepted: 04/05/2007] [Indexed: 12/11/2022]
Abstract
Whole cells of Listeria monocytogenes were detected with a compact, surface plasmon resonance (SPR) sensor using a phage-displayed scFv antibody to the virulence factor actin polymerization protein (ActA) for biorecognition. Phage Lm P4:A8, expressing the scFv antibody fused to the pIII surface protein was immobilized to the sensor surface through physical adsorption. A locally constructed fluidics system was used to deliver solutions to the compact, two-channel SPREETA sensor. Specificity of the sensor was tested using common food-borne bacteria and a control phage, M13K07 lacking the scFv fusion on its coat protein. The detection limit for L. monocytogenes whole cells was estimated to be 2 x 10(6)cfu/ml. The sensor was also used to determine the dissociation constant (Kd) for the interaction of phage-displayed scFv and soluble ActA in solution as 4.5 nM.
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Affiliation(s)
- Viswaprakash Nanduri
- Center For Food Safety and Engineering, Department of Food Science, Purdue University, 745 Agriculture Mall Dr., West Lafayette, IN 47907, USA
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43
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Marchesini GR, Koopal K, Meulenberg E, Haasnoot W, Irth H. Spreeta-based biosensor assays for endocrine disruptors. Biosens Bioelectron 2007; 22:1908-15. [PMID: 16971108 DOI: 10.1016/j.bios.2006.08.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Revised: 07/28/2006] [Accepted: 08/09/2006] [Indexed: 11/21/2022]
Abstract
The construction and performance of an automated low-cost Spreeta-based prototype biosensor system for the detection of endocrine disrupting chemicals (EDCs) is described. The system consists primarily of a Spreeta miniature liquid sensor incorporated into an aluminum flow cell holder, dedicated to support a Biacore chip frame, in combination with a simple pressurized air-driven fluid system. During the optimization, a monoclonal antibody (MAb)-based immunoassay for the estrogenic compound bisphenol A (BPA) was used as a model. After the optimization two thyroxine transport protein inhibition assays for thyroid endocrine disruptors were implemented. The average noise of the system for 1 min of baseline was 1.1 microRIU (refractive index units) and it could be operated in the range of 18-22 degrees C with a minimum baseline drift (5-10 microRIU/100 min). Optimum signal to noise ratio (S/N R) was obtained using a flow cell height of 100 microm and a flow rate of 180 microl/min. The sensitivity of the Spreeta-based biosensor inhibition assays implemented (50% inhibition concentration (IC50) of 30.2 nM for BPA using MAb12 and 12.3 and 11.6 nM for thyroxine (T4) using thyroxine-binding globulin (TBG) and recombinant transthyretin (rTTR), respectively) was comparable to the sensitivity previously obtained using a Biacore 3000 (IC50 of 39.9 nM for BPA and 8.6 and 13.7 nM, respectively, for T4). The results indicate that the alternative prototype system can be used in combination with ready-to-use biosensor chip surfaces and it is potentially a useful tool for the bioeffect-related screening of EDCs.
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Affiliation(s)
- G R Marchesini
- RIKILT-Institute of Food Safety, P.O. Box 230, 6700 AE Wageningen, The Netherlands.
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44
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Goldman ER, Anderson GP, Liu JL, Delehanty JB, Sherwood LJ, Osborn LE, Cummins LB, Hayhurst A. Facile generation of heat-stable antiviral and antitoxin single domain antibodies from a semisynthetic llama library. Anal Chem 2006; 78:8245-55. [PMID: 17165813 PMCID: PMC2528076 DOI: 10.1021/ac0610053] [Citation(s) in RCA: 153] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Llamas possess a class of unconventional immunoglobulins that have only heavy chains; unpaired heavy variable domains are responsible for antigen binding. These domains have previously been cloned and expressed as single domain antibodies (sdAbs); they comprise the smallest known antigen binding fragments. SdAbs have been shown to bind antigens at >90 degrees C and to refold after being denatured. To take advantage of the remarkable properties of sdAbs, we constructed a large, semisynthetic llama sdAb library. This library facilitated the rapid selection of binders to an array of biothreat targets. We selected sdAb specific for live vaccinia virus (a smallpox virus surrogate), hen egg lysozyme, cholera toxin, ricin, and staphylococcal enterotoxin B. The selected sdAb possessed high specificity as well as enhanced thermal stability in comparison to conventional IgG and scFv antibodies. We also determined equilibrium dissociation constants as well as demonstrated the use of several antitoxin sdAbs as effective capture and reporter molecules in sandwich assays on the Luminex instrument. The ability to rapidly select such rugged antibodies will enhance the reliability of immunoassays by extending shelf life and the capacity to function in hostile environments.
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Affiliation(s)
- Ellen R. Goldman
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, DC 20375
| | - George P. Anderson
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, DC 20375
| | - Jinny L. Liu
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, DC 20375
| | - James B. Delehanty
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, DC 20375
| | - Laura J. Sherwood
- Department of Virology and Immunology, Southwest Foundation for Biomedical Research, San Antonio, TX 78227-5301
| | - Lisa E. Osborn
- Department of Virology and Immunology, Southwest Foundation for Biomedical Research, San Antonio, TX 78227-5301
| | - Larry B. Cummins
- Department of Comparative Medicine, Southwest Foundation for Biomedical Research, San Antonio, TX 78227-5301
| | - Andrew Hayhurst
- Department of Virology and Immunology, Southwest Foundation for Biomedical Research, San Antonio, TX 78227-5301
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45
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Knudsen SM, Lee J, Ellington AD, Savran CA. Ribozyme-Mediated Signal Augmentation on a Mass-Sensitive Biosensor. J Am Chem Soc 2006; 128:15936-7. [PMID: 17165697 DOI: 10.1021/ja064137m] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Mass-based detection methods such as the quartz crystal microbalance (QCM) offer an attractive option to label-based methods; however the sensitivity is generally lower by comparison. In particular, low-molecular-weight analytes can be difficult to detect based on mass addition alone. In this communication, we present the use of effector-dependent ribozymes (aptazymes) as reagents for augmenting small ligand detection on a mass-sensitive device. Two distinct aptazymes were chosen: an L1-ligase-based aptazyme (L1-Rev), which is activated by a small peptide (MW approximately 2.4 kDa) from the HIV-1 Rev protein, and a hammerhead cleavase-based aptazyme (HH-theo3) activated by theophylline (MW = 180 Da). Aptazyme activity was observed in real time, and low-molecular-weight analyte detection has been successfully demonstrated with both aptazymes.
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Affiliation(s)
- Scott M Knudsen
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, USA
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Abstract
We identified 1113 articles (103 reviews, 1010 primary research articles) published in 2005 that describe experiments performed using commercially available optical biosensors. While this number of publications is impressive, we find that the quality of the biosensor work in these articles is often pretty poor. It is a little disappointing that there appears to be only a small set of researchers who know how to properly perform, analyze, and present biosensor data. To help focus the field, we spotlight work published by 10 research groups that exemplify the quality of data one should expect to see from a biosensor experiment. Also, in an effort to raise awareness of the common problems in the biosensor field, we provide side-by-side examples of good and bad data sets from the 2005 literature.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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