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Lu Y, Bloom BP, Qian S, Waldeck DH. Enantiospecificity of Cysteine Adsorption on a Ferromagnetic Surface: Is It Kinetically or Thermodynamically Controlled? J Phys Chem Lett 2021; 12:7854-7858. [PMID: 34380316 DOI: 10.1021/acs.jpclett.1c02087] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This work uses electrochemical quartz crystal microbalance methods to demonstrate the enantiospecific interaction between a magnetized surface and a chiral amino acid. The enantiospecific adsorption of chiral molecules (cysteine is used as a model) on a ferromagnetic surface is shown to arise from the kinetics of adsorption and not from a thermodynamic stabilization. Measurements of the Gibbs free energy of adsorption for different chiral forms of cysteine and different electrode magnetization states show no significant differences, whereas measurements of the adsorption and desorption kinetics reveal a strong dependence on the magnetization state of the electrode surface. In addition, the enantioselectivity is shown to depend sensitively on the solution pH and the charge state of the chiral adsorbate.
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Affiliation(s)
- Y Lu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - B P Bloom
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - S Qian
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - D H Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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2
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Rotake DR, Kumar A, Darji AD, Singh J. Highly selective sensor for the detection of Hg 2+ ions using homocysteine functionalised quartz crystal microbalance with cross-linked pyridinedicarboxylic acid. IET Nanobiotechnol 2020; 14:563-573. [PMID: 33010131 PMCID: PMC8676536 DOI: 10.1049/iet-nbt.2020.0109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/18/2020] [Accepted: 06/02/2020] [Indexed: 01/23/2023] Open
Abstract
This study reports an insightful portable vector network analyser (VNA)-based measurement technique for quick and selective detection of Hg2+ ions in nanomolar (nM) range using homocysteine (HCys)-functionalised quartz-crystal-microbalance (QCM) with cross-linked-pyridinedicarboxylic acid (PDCA). The excessive exposure to mercury can cause damage to many human organs, such as the brain, lungs, stomach, and kidneys, etc. Hence, the authors have proposed a portable experimental platform capable of achieving the detection in 20-30 min with a limit of detection (LOD) 0.1 ppb (0.498 nM) and a better dynamic range (0.498 nM-6.74 mM), which perfectly describes its excellent performance over other reported techniques. The detection time for various laboratory-based techniques is generally 12-24 h. The proposed method used the benefits of thin-film, nanoparticles (NPs), and QCM-based technology to overcome the limitation of NPs-based technique and have LOD of 0.1 ppb (0.1 μg/l) for selective Hg2+ ions detection which is many times less than the World Health Organization limit of 6 μg/l. The main advantage of the proposed QCM-based platform is its portability, excellent repeatability, millilitre sample volume requirement, and easy process flow, which makes it suitable as an early warning system for selective detection of mercury ions without any costly measuring instruments.
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Affiliation(s)
- Dinesh Ramkrushna Rotake
- Electronics Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India.
| | - Ajay Kumar
- Smart Sensors Area, CSIR-Central Electronics Engineering Research Institute, Pilani-333031, Rajasthan, India
| | - Anand D Darji
- Electronics Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
| | - Jitendra Singh
- Smart Sensors Area, CSIR-Central Electronics Engineering Research Institute, Pilani-333031, Rajasthan, India
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3
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Migoń D, Wasilewski T, Suchy D. Application of QCM in Peptide and Protein-Based Drug Product Development. Molecules 2020; 25:E3950. [PMID: 32872496 PMCID: PMC7504752 DOI: 10.3390/molecules25173950] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/21/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
AT-cut quartz crystals vibrating in the thickness-shear mode (TSM), especially quartz crystal resonators (QCRs), are well known as very efficient mass sensitive systems because of their sensitivity, accuracy, and biofunctionalization capacity. They are highly reliable in the measurement of the mass of deposited samples, in both gas and liquid matrices. Moreover, they offer real-time monitoring, as well as relatively low production and operation costs. These features make mass sensitive systems applicable in a wide range of different applications, including studies on protein and peptide primary packaging, formulation, and drug product manufacturing process development. This review summarizes the information on some particular implementations of quartz crystal microbalance (QCM) instruments in protein and peptide drug product development as well as their future prospects.
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Affiliation(s)
- Dorian Migoń
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Hallera 107, 80-416 Gdańsk, Poland;
- Polpharma Biologics S.A., Trzy Lipy 3, 80-172 Gdańsk, Poland;
| | - Tomasz Wasilewski
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Hallera 107, 80-416 Gdańsk, Poland;
| | - Dariusz Suchy
- Polpharma Biologics S.A., Trzy Lipy 3, 80-172 Gdańsk, Poland;
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Sievers P, Moß C, Schröder U, Johannsmann D. Use of torsional resonators to monitor electroactive biofilms. Biosens Bioelectron 2018; 110:225-232. [PMID: 29625330 DOI: 10.1016/j.bios.2018.03.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/05/2018] [Accepted: 03/20/2018] [Indexed: 01/08/2023]
Abstract
Whereas the study of interfaces and thin films with the quartz crystal microbalance (QCM) is well established, biofilms have proven to be a difficult subject for the QCM. The main problem is that the shear wave emanating from the resonator surface does not usually reach to the top of the sample. This problem can be solved with torsional resonators. These have a resonance frequency in the range of tens of kHz, which is much below the frequency of the thickness-shear QCMs. The depth of penetration of the shear wave is correspondingly larger. Data acquisition and data analysis can proceed in analogy to the conventional thickness-shear QCM. Torsional resonators may also be operated as electrochemical QCMs (EQCMs), meaning that a DC electrical potential may be applied to the active electrode and that shifts of frequency and bandwidth may be acquired in parallel to the electrical current. Here we report on the formation of mixed-culture biofilms dominated by the microorganism Geobacter anodireducens. The viscoelastic analysis evidences an increase in rigidity as the films grows. Potential sweeps on electroactive biofilms reveal a softening under negative potentials, that is, under conditions, where the layer's metabolism was slowed down by insufficient oxidative activity of the substrate. For comparison, biofilms were monitored in parallel with a conventional thickness-shear QCM.
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Affiliation(s)
- Phillipp Sievers
- Institute of Physical Chemistry, Clausthal University of Technology, Arnold-Sommerfeld-Str. 4, D-38678 Clausthal-Zellerfeld, Germany
| | - Christopher Moß
- Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Uwe Schröder
- Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Diethelm Johannsmann
- Institute of Physical Chemistry, Clausthal University of Technology, Arnold-Sommerfeld-Str. 4, D-38678 Clausthal-Zellerfeld, Germany; Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
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Dunn KE, Trefzer MA, Johnson S, Tyrrell AM. Characterizing Surface-Immobilized DNA Structures and Devices Using a Quartz Crystal Microbalance with Dissipation Monitoring (QCM-D). Methods Mol Biol 2018; 1811:101-114. [PMID: 29926448 DOI: 10.1007/978-1-4939-8582-1_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A quartz crystal microbalance with dissipation monitoring can be used to study the mass and structure of surface-immobilized layers of molecules, in real time. Here we describe the use of the technique to study DNA structures and devices.
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Affiliation(s)
- Katherine E Dunn
- Department of Electronic Engineering, University of York, Heslington, York, UK.
- Institute for Bioengineering, School of Engineering, University of Edinburgh, Edinburgh, Scotland, UK.
| | - Martin A Trefzer
- Department of Electronic Engineering, University of York, Heslington, York, UK
| | - Steven Johnson
- Department of Electronic Engineering, University of York, Heslington, York, UK
| | - Andy M Tyrrell
- Department of Electronic Engineering, University of York, Heslington, York, UK
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Low K, Wong LY, Maldonado M, Manjunath C, Horner CB, Perez M, Myung NV, Nam J. Physico-electrochemical Characterization of Pluripotent Stem Cells during Self-Renewal or Differentiation by a Multi-modal Monitoring System. Stem Cell Reports 2017; 8:1329-1339. [PMID: 28457888 PMCID: PMC5425683 DOI: 10.1016/j.stemcr.2017.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 01/14/2023] Open
Abstract
Monitoring pluripotent stem cell behaviors (self-renewal and differentiation to specific lineages/phenotypes) is critical for a fundamental understanding of stem cell biology and their translational applications. In this study, a multi-modal stem cell monitoring system was developed to quantitatively characterize physico-electrochemical changes of the cells in real time, in relation to cellular activities during self-renewal or lineage-specific differentiation, in a non-destructive, label-free manner. The system was validated by measuring physical (mass) and electrochemical (impedance) changes in human induced pluripotent stem cells undergoing self-renewal, or subjected to mesendodermal or ectodermal differentiation, and correlating them to morphological (size, shape) and biochemical changes (gene/protein expression). An equivalent circuit model was used to further dissect the electrochemical (resistive and capacitive) contributions of distinctive cellular features. Overall, the combination of the physico-electrochemical measurements and electrical circuit modeling collectively offers a means to longitudinally quantify the states of stem cell self-renewal and differentiation.
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Affiliation(s)
- Karen Low
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Lauren Y Wong
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Maricela Maldonado
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Chetas Manjunath
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Christopher B Horner
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Mark Perez
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA
| | - Nosang V Myung
- Department of Chemical and Environmental Engineering, University of California-Riverside, Bourns Hall B355, 900 University Avenue, Riverside, CA 92521, USA
| | - Jin Nam
- Department of Bioengineering, University of California-Riverside, Materials Science & Engineering Building 331, 900 University Avenue, Riverside, CA 92521, USA.
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Funari R, Terracciano I, Della Ventura B, Ricci S, Cardi T, D'Agostino N, Velotta R. Label-Free Detection of Gliadin in Food by Quartz Crystal Microbalance-Based Immunosensor. J Agric Food Chem 2017; 65:1281-1289. [PMID: 28121432 DOI: 10.1021/acs.jafc.6b04830] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gluten is a protein composite found in wheat and related grains including barley, rye, oat, and all their species and hybrids. Gluten matrix is a biomolecular network of gliadins and glutenins that contribute to the texture of pastries, breads, and pasta. Gliadins are mainly responsible for celiac disease, one of the most widespread food-related pathologies in Western world. In view of the importance of gliadin proteins, by combining the quartz crystal microbalance technology, a cheap and robust piezoelectric transducer, with the so-called photonic immobilization technique, an effective surface functionalization method that provides spatially oriented antibodies on gold substrates, we realized a sensitive and reliable biosensor for quantifying these analytes extracted from real samples in a very short time. The resulting immunosensor has a limit of detection of about 4 ppm and, more remarkably, shows excellent sensitivity in the range 7.5-15 ppm. This feature makes our device reliable and effective for practical applications since it is able to keep low the influence of false positives.
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Affiliation(s)
- Riccardo Funari
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
| | - Irma Terracciano
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Bartolomeo Della Ventura
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
| | - Sara Ricci
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Teodoro Cardi
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Nunzio D'Agostino
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Raffaele Velotta
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
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Della Ventura B, Iannaccone M, Funari R, Pica Ciamarra M, Altucci C, Capparelli R, Roperto S, Velotta R. Effective antibodies immobilization and functionalized nanoparticles in a quartz-crystal microbalance-based immunosensor for the detection of parathion. PLoS One 2017; 12:e0171754. [PMID: 28182720 PMCID: PMC5300251 DOI: 10.1371/journal.pone.0171754] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 01/25/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Biosensor-based detection provides a rapid and low-cost alternative to conventional analytical methods for revealing the presence of the contaminants in water as well as solid matrices. Although important to be detected, small analytes (few hundreds of Daltons) are an issue in biosensing since the signal they induce in the transducer, and specifically in a Quartz-Crystal Microbalance, is undetectable. A pesticide like parathion (M = 292 Da) is a typical example of contaminant for which a signal amplification procedure is desirable. METHODS/FINDINGS The ballasting of the analyte by gold nanoparticles has been already applied to heavy target as proteins or bacteria to improve the limit of detection. In this paper, we extend the application of such a method to small analytes by showing that once the working surface of a Quartz-Crystal Microbalance (QCM) has been properly functionalized, a limit of detection lower than 1 ppb is reached for parathion. The effective surface functionalization is achieved by immobilizing antibodies upright oriented on the QCM gold surface by a simple photochemical technique (Photonic Immobilization Technique, PIT) based on the UV irradiation of the antibodies, whereas a simple protocol provided by the manufacturer is applied to functionalize the gold nanoparticles. Thus, in a non-competitive approach, the small analyte is made detectable by weighing it down through a "sandwich protocol" with a second antibody tethered to heavy gold nanoparticles. The immunosensor has been proved to be effective against the parathion while showing no cross reaction when a mixture of compounds very similar to parathion is analyzed. CONCLUSION/SIGNIFICANCE The immunosensor described in this paper can be easily applied to any small molecule for which polyclonal antibodies are available since both the functionalization procedure of the QCM probe surface and gold nanoparticle can be applied to any IgG, thereby making our device of general application in terms of target analyte.
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Affiliation(s)
| | - Marco Iannaccone
- Department of Agriculture, University of Naples “Federico II”, Portici, Italy
| | - Riccardo Funari
- Department of Physics “Ettore Pancini”, University of Naples “Federico II”, Naples, Italy
| | - Massimo Pica Ciamarra
- Division of Physics and Applied Physics, School of Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
- CNR-SPIN, University of Naples “Federico II”, Naples, Italy
| | - Carlo Altucci
- Department of Physics “Ettore Pancini”, University of Naples “Federico II”, Naples, Italy
| | - Rosanna Capparelli
- Department of Agriculture, University of Naples “Federico II”, Portici, Italy
| | - Sante Roperto
- Department of Agriculture, University of Naples “Federico II”, Portici, Italy
| | - Raffaele Velotta
- Department of Physics “Ettore Pancini”, University of Naples “Federico II”, Naples, Italy
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Lima MA, Bastos IN, Cella N. Quartz crystal microbalance and photoacoustic measurements in dental photocuring. Rev Sci Instrum 2016; 87:093903. [PMID: 27782581 DOI: 10.1063/1.4963309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Photocured dental resins are used extensively in restorative procedures in dentistry. Inadequate curing reduces the lifetime of the dental restoration, and consequently it is essential to precisely measure the polymerisation kinetics. In this study, two techniques, Quartz Crystal Microbalance (QCM) and Photoacoustic Spectroscopy (PAS), were used to monitor the real-time cure and to obtain the optical absorption spectra of resins, respectively. From the PAS measurements, the precise peaks of absorption were identified, and were used as the appropriate wavelength of the photocuring light in the QCM monitoring. The combined use of these techniques allows reliable determination of the duration of the phases of physical and chemical changes that occur during photocuring. Two commercial dental resins were tested, and the results confirmed the advantages of using PAS and QCM to study polymerisation kinetics.
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Affiliation(s)
- Marcenilda A Lima
- Instituto Politécnico, IPRJ, Universidade do Estado do Rio de Janeiro, UERJ, P.O. Box 97282, 28.625-570 Nova Friburgo, Rio de Janeiro, Brazil
| | - Ivan N Bastos
- Instituto Politécnico, IPRJ, Universidade do Estado do Rio de Janeiro, UERJ, P.O. Box 97282, 28.625-570 Nova Friburgo, Rio de Janeiro, Brazil
| | - Norberto Cella
- Instituto Politécnico, IPRJ, Universidade do Estado do Rio de Janeiro, UERJ, P.O. Box 97282, 28.625-570 Nova Friburgo, Rio de Janeiro, Brazil
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Tao W, Xie Q, Wang H, Ke S, Lin P, Zeng X. Integration of a miniature quartz crystal microbalance with a microfluidic chip for amyloid beta-Aβ42 quantitation. Sensors (Basel) 2015; 15:25746-60. [PMID: 26473864 PMCID: PMC4634447 DOI: 10.3390/s151025746] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 09/18/2015] [Accepted: 09/22/2015] [Indexed: 12/12/2022]
Abstract
A miniature quartz crystal microbalance (mQCM) was integrated with a polydimethylsiloxane (PDMS) microfluidic device for on-chip determination of amyloid polypeptide–Aβ42. The integration techniques included photolithography and plasma coupling. Aβ42 antibody was immobilized on the mQCM surface using a cross-linker method, and the resonance frequency of mQCM shifted negatively due to antibody-antigen binding. A linear range from 0.1 µM to 3.2 µM was achieved. By using matrix elimination buffer, i.e., matrix phosphate buffer containing 500 µg/mL dextran and 0.5% Tween 20, Aβ42 could be successfully detected in the presence of 75% human serum. Additionally, high temperature treatments at 150 °C provided a valid method to recover mQCM, and PDMS-mQCM microfluidic device could be reused to some extent. Since the detectable Aβ42 concentration could be as low as 0.1 µM, which is close to cut-off value for Alzheimer patients, the PDMS-mQCM device could be applied in early Alzheimer’s disease diagnosis.
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Affiliation(s)
- Wenyan Tao
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China.
| | - Qingji Xie
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Hairui Wang
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Shanming Ke
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Peng Lin
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Xierong Zeng
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China.
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11
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Selyanchyn R, Wakamatsu S, Hayashi K, Lee SW. A Nano-Thin Film-Based Prototype QCM Sensor Array for Monitoring Human Breath and Respiratory Patterns. Sensors (Basel) 2015; 15:18834-50. [PMID: 26263994 PMCID: PMC4570348 DOI: 10.3390/s150818834] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 07/19/2015] [Accepted: 07/28/2015] [Indexed: 01/19/2023]
Abstract
Quartz crystal microbalance (QCM) sensor array was developed for multi-purpose human respiration assessment. The sensor system was designed to provide feedback for human respiration. Thorough optimization of measurement conditions: air flow, temperature in the QCM chamber, frequency measurement rate, and electrode position regarding to the gas flow—was performed. As shown, acquisition of respiratory parameters (rate and respiratory pattern) could be achieved even with a single electrode used in the system. The prototype system contains eight available QCM channels that can be potentially used for selective responses to certain breath chemicals. At present, the prototype machine is ready for the assessment of respiratory functions in larger populations in order to gain statistical validation. To the best of our knowledge, the developed prototype is the only respiratory assessment system based on surface modified QCM sensors.
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Affiliation(s)
- Roman Selyanchyn
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 808-0135, Japan.
- WPI International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744, Motooka, Fukuoka 819-0395, Japan.
| | - Shunichi Wakamatsu
- Chitose Technical Center, Nihon Dempa Kogyo Co. Ltd., 1-3-1, Minami-Chitose, Hokkaido 066-0009, Japan.
| | - Kenshi Hayashi
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan.
| | - Seung-Woo Lee
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 808-0135, Japan.
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12
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Duarte AA, Abegão LMG, Ribeiro JHF, Lourenço JP, Ribeiro PA, Raposo M. Study of in situ adsorption kinetics of polyelectrolytes and liposomes using quartz crystal microbalance: Influence of experimental layout. Rev Sci Instrum 2015; 86:063901. [PMID: 26133844 DOI: 10.1063/1.4921715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Quartz Crystal Microbalance (QCM) is a widely used technique to characterize adsorption/desorption phenomena at the solid/liquid interface. However, the obtained adsorption/desorption kinetics curves are often not reproducible and present some noise and long term fluctuations. In this work, the accuracy of a commercial QCM to measure the adsorbed amount of polyelectrolytes and biological molecules was evaluated in terms of experimental QCM configurations with respect to quality, stability, and reproducibility of the measured data. Evaluation consisted in comparing the adsorption kinetics curves of the cationic polyelectrolyte poly(ethyleneimine) and the anionic 1,2-dipalmitoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (sodium salt) liposomes, when setting the quartz crystal surface in stationary horizontal open, stationary horizontal closed, stationary vertical open, continuous vertical closed, and stationary vertical closed measuring configuration. For this last configuration, a new cell was designed and implemented. The analysis of the kinetics curves revealed that horizontal modes are more unstable when subjected to fostering noise due to the mechanical vibrations and lead to resonance frequency shift. This shift is caused by the measurement of non-adsorbed molecules which are deposited on the quartz crystal due to gravity force. The vertical modes proved to be more reproducible and reliable.
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Affiliation(s)
- A A Duarte
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - L M G Abegão
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - J H F Ribeiro
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - J P Lourenço
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - P A Ribeiro
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - M Raposo
- CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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13
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Björklund S, Kocherbitov V. Humidity scanning quartz crystal microbalance with dissipation monitoring setup for determination of sorption-desorption isotherms and rheological changes. Rev Sci Instrum 2015; 86:055105. [PMID: 26026556 DOI: 10.1063/1.4920919] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new method to determine water sorption-desorption isotherms with high resolution in the complete range of water activities (relative humidities) is presented. The method is based on quartz crystal microbalance with dissipation monitoring (QCM-D). The QCM-D is equipped with a humidity module in which the sample film is kept in air with controlled humidity. The experimental setup allows for continuous scanning of the relative humidity from either dry to humid conditions or vice versa. The amount of water sorbed or desorbed from the sample is determined from the resonance frequencies of the coated quartz sensor, via analysis of the overtone dependence. In addition, the method allows for characterization of hydration induced changes of the rheological properties from the dissipation data, which is closely connected to the viscoelasticity of the film. The accuracy of the humidity scanning setup is confirmed in control experiments. Sorption-desorption isotherms of pig gastric mucin and lysozyme, obtained by the new method, show good agreement with previous results. Finally, we show that the deposition technique used to coat the quartz sensor influences the QCM-D data and how this issue can be used to obtain further information on the effect of hydration. In particular, we demonstrate that spin-coating represents an attractive alternative to obtain sorption-desorption isotherms, while drop-coating provides additional information on changes of the rheological properties during hydration.
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Affiliation(s)
- Sebastian Björklund
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
| | - Vitaly Kocherbitov
- Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
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14
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Wang G, Zhang W, Wang S, Sun J. A Quartz Crystal Microbalance dew point sensor without frequency measurement. Rev Sci Instrum 2014; 85:115002. [PMID: 25430139 DOI: 10.1063/1.4900662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This work deals with the design of a dew point sensor based on Quartz Crystal Microbalance (QCM) without measuring the frequency. This idea is inspired by the fact that the Colpitts oscillation circuit will stop oscillating when the QCM works in the liquid media. The quartz crystal and the electrode are designed through the finite element simulation and the stop oscillating experiment is conducted to verify the sensibility. Moreover, the measurement result is calibrated to approach the true value. At last a series of dew points at the same temperature is measured with the designed sensor. Results show that the designed dew point sensor is able to detect the dew point with the proper accuracy.
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Affiliation(s)
- Guohua Wang
- School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
| | - Weishuo Zhang
- School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
| | - Shuo Wang
- School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
| | - Jinglin Sun
- School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
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15
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Abstract
In this work, a new design for a microheater combined with a quartz crystal microbalance (QCM) array for thermogravimetric analysis is presented. Each QCM consists of two electrodes to excite thickness-shear-mode vibrations and one microheater to increase the temperature on the crystal backside. In addition, all the electrode pads are patterned on the crystal backside, making the design of the QCM compact and user-friendly. Finally, the proposed QCM array was employed to separate ethanol from methanol. This was successfully achieved via thermal desorption spectra calculated by differentiating the frequency changes.
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Affiliation(s)
- N Sai
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Y Tagawa
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - M Sohgawa
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - T Abe
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
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16
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Dai J, Zhang Y, Pan M, Kong L, Wang S. Development and application of quartz crystal microbalance sensor based on novel molecularly imprinted sol-gel polymer for rapid detection of histamine in foods. J Agric Food Chem 2014; 62:5269-5274. [PMID: 24823260 DOI: 10.1021/jf501092u] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To rapidly detect histamine (HA) in foods, a novel material for HA-specific recognition was synthesized by a sol-gel process and coated on a quartz crystal microbalance (QCM) sensor. The Scatchard model was used to evaluate the adsorption performance of the material; high affinity for HA was demonstrated. Based on QCM frequency change, the sensor exhibited linear behavior for HA concentrations of 0.11 × 10(-2) to 4.45 × 10(-2) mg L(-1), a detection limit of 7.49 × 10(-4) mg kg(-1) (S/N = 3), high selectivity for HA (selectivity coefficient >4) compared with structural analogues, good reproducibility, and long-term stability. The sensor was used to determine the concentration of HA in spiked fish products; the recovery values were satisfactory (93.2-100.4%) and compared well with those obtained by high-performance liquid chromatography (correlation coefficient, r(2) = 0.9965).
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Affiliation(s)
- Jie Dai
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology , Tianjin 300457, China
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17
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Prakrankamanant P. Quartz crystal microbalance biosensors: prospects for point-of-care diagnostics. J Med Assoc Thai 2014; 97 Suppl 4:S56-S64. [PMID: 24851566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND A QCM is a label-free and extremely mass-sensitive device, which allows the detection of the binding event between trace medical analytes and bio-receptors on its surface. QCM, the most promising type of biosensors, has attracted much interest due to the inherent benefits over other transducers, including better sensitivity, ease-of-use, integration with compact analytical devices, and economy, and also involving relatively simple technology in its production. Thus, they have great potential with regard to point-of-care (POC) testing for early detection of diseases. MATERIAL AND METHOD Retrievable articles that related to acoustic type sensing of Pubmed and Science direct database were included. Additionally, abstracts presented at Biosensor World Congress held between 2008 and 2012 were searching to identify relevant clinical trials. RESULTS All studies demonstrated the opportunity in the use of QCM as a novel diagnostic method. Several attempts have been made to construct integrated systems that show promising application for POC tests. CONCLUSION This review represents another step to meet challenges, especially in the improved minimization and sensitivity of biosensors. As this work continues, new bioreceptor and biomarkers emerging from the could make it an ideal candidate for cheap POC diagnostic.
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18
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Burda I, Silaghi A, Tunyagi A, Simon S, Popescu O. Note: sensitivity multiplication module for quartz crystal microbalance applications. Rev Sci Instrum 2014; 85:026116. [PMID: 24593416 DOI: 10.1063/1.4866689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this Note, a novel sensitivity multiplication module was added to classical quartz crystal microbalance (QCM). The purpose is to increase QCM frequency shift without changing nominal frequency of the quartz crystal resonator or nominal frequency value delivered to the frequency counter. Allan deviance measurement confirms that the multiplication of the frequency shift is limited by the quartz crystal loads with direct effect in quartz crystal quality factor and oscillator stability. An experimental implementation of this new sensitivity multiplication module that can increase up to six times the frequency shift of the QCM was experimentally investigated using different load conditions.
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Affiliation(s)
- Ioan Burda
- Department of Physics, Babes-Bolyai University, Cluj-Napoca 400084, Romania
| | - Andreea Silaghi
- Department of Physics, Babes-Bolyai University, Cluj-Napoca 400084, Romania
| | - Arthur Tunyagi
- Department of Physics, Babes-Bolyai University, Cluj-Napoca 400084, Romania
| | - Simion Simon
- Department of Physics, Babes-Bolyai University, Cluj-Napoca 400084, Romania
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19
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Orsini A, Medaglia PG, Scarpellini D, Pizzoferrato R, Falconi C. Towards high-performance, low-cost quartz sensors with high-density, well-separated, vertically aligned ZnO nanowires by low-temperature, seed-less, single-step, double-sided growth. Nanotechnology 2013; 24:355503. [PMID: 23924776 DOI: 10.1088/0957-4484/24/35/355503] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Resonant sensors with nanostructured surfaces have long been considered as an emergent platform for high-sensitivity transduction because of the potentially very large sensing areas. Nevertheless, until now only complex, time-consuming, expensive and sub-optimal fabrication procedures have been described; in fact, especially with reference to in-liquid applications, very few devices have been reported. Here, we first demonstrate that, by immersing standard, ultra-low-cost quartz resonators with un-polished silver electrodes in a conventional zinc nitrate/HMTA equimolar nutrient solution, the gentle contamination from the metallic package allows direct growth on the electrodes of arrays of high-density (up to 10 μm⁻²) and well-separated (no fusion at the roots) ZnO nanowires without any seed layer or thermal annealing. The combination of high-density and good separation is ideal for increasing the sensing area; moreover, this uniquely simple, single-step process is suitable for conventional, ultra-low-cost and high-frequency quartzes, and results in devices that are already packaged and ready to use. As an additional advantage, the process parameters can be effectively optimized by measuring the quartz admittance before and after growth. As a preliminary test, we show that the sensitivity to the liquid properties of high-frequency (i.e. high sensitivity) quartzes can be further increased by nearly one order of magnitude and thus show the highest ever reported frequency shifts of an admittance resonance in response to immersion in both ethanol and water.
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Affiliation(s)
- Andrea Orsini
- Department of Electronic Engineering, University of Tor Vergata, Via del Politecnico 1, I-00133 Rome, Italy
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20
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Eom S, Yu E, Choi SJ. Functionalization of quartz crystal microbalances with liposomes containing the N-hydroxysuccinimide ester of palmitic acid. Anal Biochem 2013; 443:78-80. [PMID: 23993905 DOI: 10.1016/j.ab.2013.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/24/2013] [Accepted: 08/16/2013] [Indexed: 11/18/2022]
Abstract
We developed a fast and simple method to functionalize a quartz crystal microbalance (QCM) with liposomes composed of phosphatidylcholine lipid and the N-hydroxysuccinimide (NHS) ester of palmitic acid. The liposome was applied directly to a bare gold surface of a QCM to prepare the lipid bilayer presenting NHS groups on the surface. The whole functionalization process was completed within 1 h using stored lipid films. Streptavidin immobilization efficiency of the method was comparable to the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/NHS chemical method, and the activity of the biotinylated antibody immobilized through the streptavidin was stably retained in repeated surface regeneration with the dissociation buffer.
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Affiliation(s)
- Sora Eom
- Department of Chemistry, Gangneung-Wonju National University, Gangneung, Gangwondo 210-702, Republic of Korea
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21
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Cuddy MF, Poda AR, Brantley LN. Determination of isoelectric points and the role of pH for common quartz crystal microbalance sensors. ACS Appl Mater Interfaces 2013; 5:3514-8. [PMID: 23611583 DOI: 10.1021/am400909g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Isoelectric points (IEPs) were determined by the method of contact angle titration for five common quartz crystal microbalance (QCM) sensors. The isoelectric points range from mildly basic in the case of Al2O3 sensors (IEP = 8.7) to moderately acidic for Au (5.2) and SiO2 (3.9), to acidic for Ag (3.2) and Ti (2.9). In general, the values reported here are indicative of inherent surface oxides. A demonstration of the effect of the surface isoelectric point on the packing efficiency of thin mucin films is provided for gold and silica QCM sensors. It is determined that mucin layers on both substrates achieve a maximum and equal layer density of ∼3500 kg/m(3) at the corresponding IEP of either QCM sensor. This implies that mucin film packing is dependent upon short-range electrostatic interactions at the sensor surface.
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22
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OGI H. Wireless-electrodeless quartz-crystal-microbalance biosensors for studying interactions among biomolecules: a review. Proc Jpn Acad Ser B Phys Biol Sci 2013; 89:401-17. [PMID: 24213205 PMCID: PMC3865356 DOI: 10.2183/pjab.89.401] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/02/2013] [Indexed: 05/24/2023]
Abstract
The mass sensitivity of quartz-crystal microbalance (QCM) was drastically improved by removing electrodes and wires attached on the quartz surfaces. Instead of wire connections, intended vibrations of quartz oscillators were excited and detected by antennas through electromagnetic waves. This noncontacting measurement is the key for ultrahigh-sensitive detection of proteins in liquids as well as quantitative measurements. This review shows the principle of wireless QCMs, their applications to studying interactions among biomolecules and aggregation reactions of amyloid β peptides, and the next-generation MEMS QCM, the resonance acoustic microbalance with naked embedded quartz (RAMNE-Q).
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Affiliation(s)
- Hirotsugu OGI
- Graduate School of Engineering, Osaka University, Osaka, Japan
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23
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Abstract
Kinetic measurements of amyloid growth provide insight into the free energy landscape of this supramolecular process and are crucial in the search for potent inhibitors of the main disorders with which it is associated, including Alzheimer's and Parkinson's diseases and Type II diabetes. In recent years, a new class of surface-bound biosensor assays, e.g., those based on surface plasmon resonance (SPR) and the quartz crystal microbalance (QCM) have been established as extremely valuable tools for kinetic measurements of amyloid formation. Here we describe detailed protocols of how QCM techniques can be used to monitor the elongation of amyloid fibrils in real time and to study the influence of external factors on the kinetics of amyloid growth with unprecedented accuracy.
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24
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Danışman MF, Özkan B. Simultaneous detection of surface coverage and structure of krypton films on gold by helium atom diffraction and quartz crystal microbalance techniques. Rev Sci Instrum 2011; 82:115104. [PMID: 22129010 DOI: 10.1063/1.3658819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We describe a quartz crystal microbalance setup that can be operated at low temperatures in ultra high vacuum with gold electrode surfaces acting as substrate surface for helium diffraction measurements. By simultaneous measurement of helium specular reflection intensity from the electrode surface and resonance frequency shift of the crystal during film adsorption, helium diffraction data can be correlated to film thickness. In addition, effects of interfacial viscosity on the helium diffraction pattern could be observed. To this end, first, flat gold films on AT cut quartz crystals were prepared which yield high enough helium specular reflection intensity. Then the crystals were mounted in the helium diffractometer sample holder and driven by means of a frequency modulation driving setup. Different crystal geometries were tested to obtain the best quality factor and preliminary measurements were performed on Kr films on gold surfaces. While the crystal structure and coverage of krypton films as a function of substrate temperature could successfully be determined, no depinning effects could be observed.
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Affiliation(s)
- M Fatih Danışman
- Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey.
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25
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Sabri YM, Ippolito SJ, O'Mullane AP, Tardio J, Bansal V, Bhargava SK. Creating gold nanoprisms directly on quartz crystal microbalance electrodes for mercury vapor sensing. Nanotechnology 2011; 22:305501. [PMID: 21719970 DOI: 10.1088/0957-4484/22/30/305501] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel electrochemical route is used to form highly {111}-oriented and size-controlled Au nanoprisms directly onto the electrodes of quartz crystal microbalances (QCMs) which are subsequently used as mercury vapor sensors. The Au nanoprism loaded QCM sensors exhibited excellent response-concentration linearity with a response enhancement of up to ∼ 800% over a non-modified sensor at an operating temperature of 28 °C. The increased surface area and atomic-scale features (step/defect sites) introduced during the growth of nanoprisms are thought to play a significant role in enhancing the sensing properties of the Au nanoprisms toward Hg vapor. The sensors are shown to have excellent Hg sensing capabilities in the concentration range of 0.123-1.27 ppm(v) (1.02-10.55 mg m(-3)), with a detection limit of 2.4 ppb(v) (0.02 mg m(-3)) toward Hg vapor when operating at 28 °C, and 17 ppb(v) (0.15 mg m(-3)) at 89 °C, making them potentially useful for air monitoring applications or for monitoring the efficiency of Hg emission control systems in industries such as mining and waste incineration. The developed sensors exhibited excellent reversible behavior (sensor recovery) within 1 h periods, and crucially were also observed to have high selectivity toward Hg vapor in the presence of ethanol, ammonia and humidity, and excellent long-term stability over a 33 day operating period.
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Affiliation(s)
- Y M Sabri
- School of Applied Sciences, RMIT University, Melbourne, VIC, Australia
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26
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Yang M, He J, Hu X, Yan C, Cheng Z. CuO nanostructures as quartz crystal microbalance sensing layers for detection of trace hydrogen cyanide gas. Environ Sci Technol 2011; 45:6088-6094. [PMID: 21699255 DOI: 10.1021/es201121w] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, quartz crystal microbalance (QCM) sensors for detection of trace hydrogen cyanide (HCN) gas were developed based on nanostructural (flower-like, boat-like, ellipsoid-like, plate-like) CuO. Responses of all the sensors to HCN were found to be in an opposite direction as compared with other common volatile substances, offering excellent selectivity for HCN detection. The sensitivity of these sensors is dependent on the morphology of CuO nanostructures, among which the plate-like CuO has the highest sensitivity (2.26 Hz/μg). Comparison of the specific surface areas of CuO nanostructures shows that CuO of higher surface area (9.3 m(2)/g) is more sensitive than that of lower surface area (1.5 m(2)/g), indicating that the specific surface area of these CuO nanostructures plays an important role in the sensitivity of related sensors. On the basis of experimental results, a sensing mechanism was proposed in which a surface redox reaction occurs between CuO and Cu(2)O on the CuO nanostructures reversibly upon contact with HCN and air, respectively. The CuO-functionalized QCM sensors are considered to be a promising candidate for trace HCN gas detection in practical applications.
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Affiliation(s)
- Mingqing Yang
- Functional Nanomaterials Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun Beiyitiao 2, Haidianqu, Beijing 100190, China
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27
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Montagut YJ, García JV, Jiménez Y, March C, Montoya A, Arnau A. Frequency-shift vs phase-shift characterization of in-liquid quartz crystal microbalance applications. Rev Sci Instrum 2011; 82:064702. [PMID: 21721715 DOI: 10.1063/1.3598340] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The improvement of sensitivity in quartz crystal microbalance (QCM) applications has been addressed in the last decades by increasing the sensor fundamental frequency, following the increment of the frequency/mass sensitivity with the square of frequency predicted by Sauerbrey. However, this sensitivity improvement has not been completely transferred in terms of resolution. The decrease of frequency stability due to the increase of the phase noise, particularly in oscillators, made impossible to reach the expected resolution. A new concept of sensor characterization at constant frequency has been recently proposed. The validation of the new concept is presented in this work. An immunosensor application for the detection of a low molecular weight contaminant, the insecticide carbaryl, has been chosen for the validation. An, in principle, improved version of a balanced-bridge oscillator is validated for its use in liquids, and applied for the frequency shift characterization of the QCM immunosensor application. The classical frequency shift characterization is compared with the new phase-shift characterization concept and system proposed.
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Affiliation(s)
- Y J Montagut
- Grupo de Fenómenos Ondulatorios, Departamento de Ingeniería Electrónica, Universitat Politècnica de València, Spain
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28
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Kirkendall C, Kwon JW. Femtogram mass resolution in a liquid environment using a low loss vacuum-gapped quartz crystal resonator. Lab Chip 2011; 11:596-598. [PMID: 21103592 DOI: 10.1039/c0lc00367k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The well-known dependence of Q on liquid damping effect has been significantly reduced through an acoustic energy loss isolation layer and a sensing diaphragm supported by microposts, which reduce the direct contact area at the interface between the resonator and surrounding liquid.
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Affiliation(s)
- Christopher Kirkendall
- Department of Electrical and Computer Engineering, University of Missouri, Columbia, MO, USA
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29
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Apodaca DC, Pernites RB, Ponnapati RR, Del Mundo FR, Advincula RC. Electropolymerized molecularly imprinted polymer films of a bis-terthiophene dendron: folic acid quartz crystal microbalance sensing. ACS Appl Mater Interfaces 2011; 3:191-203. [PMID: 21080660 DOI: 10.1021/am100805y] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A folic acid sensor was prepared via an electropolymerized molecularly imprinted polymer (E-MIP) film of a bis-terthiophene dendron on a quartz crystal microbalance (QCM). The cyclic voltammetry (CV) electrodeposition of the imprinted polymer film was monitored by electrochemical QCM or E-QCM, enabling in situ monitoring and characterization of E-MIP film formation and the viscoelastic behavior of the film. A key component of the E-MIP process is the use of a bifunctional monomer design to precomplex with the template and function as a cross-linker. The complex was electropolymerized and cross-linked by CV to form a polythiophene matrix. Stable cavities were formed that specifically fit the size and shape of the folic acid template. The same substrate surface was used for folic acid sensing. The predicted geometry of the 1:2 folic acid/terthiophene complex was obtained through semiempirical AM1 quantum calculations. The analytical performance, expressed through the figures of merit, of the sensor in aqueous solutions of the analyte was investigated. A relatively good linearity, R(2) = 0.985, was obtained within the concentration range 0-100 μM folic acid. The detection limit was found to be equal to 15.4 μM (6.8 μg). The relative cross selectivity of the folic acid imprinted polymer against the three molecules follows this trend: pteroic acid (= 50%) > caffeine (= 41%) > theophylline (= 6%). The potential and limitations of the E-MIP method were also discussed.
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Affiliation(s)
- Dahlia C Apodaca
- Department of Chemistry and Department of Chemical and Biomolecular Engineering, University of Houston , Houston, Texas 77204-5003, USA
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30
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Wang SH, Shen CY, Weng TC, Lin PH, Yang JJ, Chen IF, Kuo SM, Chang SJ, Tu YK, Kao YH, Hung CH. Detection of cartilage oligomeric matrix protein using a quartz crystal microbalance. Sensors (Basel) 2010; 10:11633-43. [PMID: 22163547 PMCID: PMC3231063 DOI: 10.3390/s101211633] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 12/10/2010] [Accepted: 12/11/2010] [Indexed: 11/20/2022]
Abstract
Current methods for diagnosing early stage osteoarthritis (OA) based on the magnetic resonance imaging and enzyme-linked immunosorbent assay methods are specific, but require specialized laboratory facilities and highly trained personal to obtain a definitive result. In this work, a user friendly and non-invasive quartz crystal microbalance (QCM) immunosensor method has been developed to detect Cartilage Oligomeric Matrix Protein (COMP) for early stage OA diagnosis. This QCM immunosensor was fabricated to immobilize COMP antibodies utilizing the self-assembled monolayer technique. The surface properties of the immunosensor were characterized by its FTIR and electrochemical impedance spectra (EIS). The feasibility study was based on urine samples obtained from 41 volunteers. Experiments were carried out in a flow system and the reproducibility of the electrodes was evaluated by the impedance measured by EIS. Its potential dynamically monitored the immunoreaction processes and could increase the efficiency and sensitivity of COMP detection in laboratory-cultured preparations and clinical samples. The frequency responses of the QCM immunosensor changed from 6 kHz when testing 50 ng/mL COMP concentration. The linear regression equation of frequency shift and COMP concentration was determined as: y = 0.0872 x + 1.2138 (R2 = 0.9957). The COMP in urine was also determined by both QCM and EIS for comparison. A highly sensitive, user friendly and cost effective analytical method for the early stage OA diagnosis has thus been successfully developed.
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Affiliation(s)
- Shih-Han Wang
- Department of Chemical Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan; E-Mails: (S.-H.W.); (P.-H.L); (J.-J.Y.)
| | - Chi-Yen Shen
- Department of Electrical Engineering, I-Shou University, Taiwan; E-Mails: (C.-Y.S.); (T.-C.W.)
| | - Ting-Chan Weng
- Department of Electrical Engineering, I-Shou University, Taiwan; E-Mails: (C.-Y.S.); (T.-C.W.)
| | - Pin-Hsuan Lin
- Department of Chemical Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan; E-Mails: (S.-H.W.); (P.-H.L); (J.-J.Y.)
| | - Jia-Jyun Yang
- Department of Chemical Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan; E-Mails: (S.-H.W.); (P.-H.L); (J.-J.Y.)
| | - I-Fen Chen
- Department of Biomedical Engineering, I-Shou University, No.8, Yi-Da Road, Jiau-shu Tsuen, Yan-chau Shiang, Kaohsiung County, Taiwan; E-Mails: (I.-F.C.); (S.-M.K); (S.-J.S.)
| | - Shyh-Ming Kuo
- Department of Biomedical Engineering, I-Shou University, No.8, Yi-Da Road, Jiau-shu Tsuen, Yan-chau Shiang, Kaohsiung County, Taiwan; E-Mails: (I.-F.C.); (S.-M.K); (S.-J.S.)
| | - Shwu-Jen Chang
- Department of Biomedical Engineering, I-Shou University, No.8, Yi-Da Road, Jiau-shu Tsuen, Yan-chau Shiang, Kaohsiung County, Taiwan; E-Mails: (I.-F.C.); (S.-M.K); (S.-J.S.)
| | - Yuan-Kun Tu
- Department of Orthopaedic Surgery, E-Da Hospital; No.1, Yi-Da Road, Jiau-shu Tsuen, Yan-chau Shiang, Kaohsiung County, Taiwan; E-Mails: (Y.-K.T.); (Y.-H.K.)
| | - Yu-Hsien Kao
- Department of Orthopaedic Surgery, E-Da Hospital; No.1, Yi-Da Road, Jiau-shu Tsuen, Yan-chau Shiang, Kaohsiung County, Taiwan; E-Mails: (Y.-K.T.); (Y.-H.K.)
| | - Chih-Hsin Hung
- Department of Chemical Engineering, I-Shou University, No. 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan; E-Mails: (S.-H.W.); (P.-H.L); (J.-J.Y.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-7-6577711 ext 3414; Fax: +886-7-6578945
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Abstract
A novel microgravimetric immunosensor has been developed using TiO(2) nanoparticle-modified immunoassay and silver enhancement reaction. An antibody-conjugated TiO(2) nanoparticle is bound to the AFP antigen immobilized on a quartz resonator. When the nanoparticles are exposed to UV light in a silver nitrate solution, the photocatalytic reduction of silver ions results in the formation of metallic silver onto the nanoparticles and induces a decrease in the resonance frequency. The frequency change by this photocatalytic reduction reaction is three orders of magnitude larger than the change by antigen binding alone. The efficiency of the photocatalytic reaction has been found to increase with the fraction of anatase crystallites in the nanoparticles and the concentration of the AgNO(3) solution. The results highlight the potential of the photocatalytic nanoparticles for the detection of low concentrations of target molecules using gravimetric sensors.
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Affiliation(s)
- Hyejung Seo
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea
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32
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Pei Z, Ma X, Ding P, Zhang W, Luo Z, Li G. Study of a QCM dimethyl methylphosphonate sensor based on a ZnO-modified nanowire-structured manganese dioxide film. Sensors (Basel) 2010; 10:8275-90. [PMID: 22163653 PMCID: PMC3231230 DOI: 10.3390/s100908275] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 08/20/2010] [Accepted: 08/31/2010] [Indexed: 11/29/2022]
Abstract
Sensitive, selective and fast detection of chemical warfare agents is necessary for anti-terrorism purposes. In our search for functional materials sensitive to dimethyl methylphosphonate (DMMP), a simulant of sarin and other toxic organophosphorus compounds, we found that zinc oxide (ZnO) modification potentially enhances the absorption of DMMP on a manganese dioxide (MnO2) surface. The adsorption behavior of DMMP was evaluated through the detection of tiny organophosphonate compounds with quartz crystal microbalance (QCM) sensors coated with ZnO-modified MnO2 nanofibers and pure MnO2 nanofibers. Experimental results indicated that the QCM sensor coated with ZnO-modified nanostructured MnO2 film exhibited much higher sensitivity and better selectivity in comparison with the one coated with pure MnO2 nanofiber film. Therefore, the DMMP sensor developed with this composite nanostructured material should possess excellent selectivity and reasonable sensitivity towards the tiny gaseous DMMP species.
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Affiliation(s)
- Zhifu Pei
- National Key Laboratory of Industrial Control Technology, Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (Z.P); (P.D.); (G.L.)
| | - Xingfa Ma
- State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China; E-Mail: (X.M.)
- School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, China
| | - Pengfei Ding
- National Key Laboratory of Industrial Control Technology, Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (Z.P); (P.D.); (G.L.)
| | - Wuming Zhang
- National Key Laboratory of Industrial Control Technology, Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (Z.P); (P.D.); (G.L.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-571-8795-2268 ext. 2230; Fax: +86-571-8795-2279
| | - Zhiyuan Luo
- Computer Learning Research Centre, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK; E-Mail: (Z.L.)
| | - Guang Li
- National Key Laboratory of Industrial Control Technology, Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (Z.P); (P.D.); (G.L.)
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33
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Yao C, Zhu T, Qi Y, Zhao Y, Xia H, Fu W. Development of a quartz crystal microbalance biosensor with aptamers as bio-recognition element. Sensors (Basel) 2010; 10:5859-71. [PMID: 22219691 PMCID: PMC3247736 DOI: 10.3390/s100605859] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 04/20/2010] [Accepted: 05/15/2010] [Indexed: 11/30/2022]
Abstract
The ultimate goal in any biosensor development project is its use for actual sample detection. Recently, there has been an interest in biosensors with aptamers as bio-recognition elements, but reported examples all deal with standards, not human serum. In order to verify the differences of aptamer-based biosensor and antibody-based biosensor in clinical detection, a comparison of the performance of aptamer-based and antibody-based quartz crystal microbalance (QCM) biosensors for the detection of immunoglobulin E (IgE) in human serum was carried out. Aptamers (or antibodies) specific to IgE were immobilized on the gold surface of a quartz crystal. The frequency shifts of the QCM were measured. The linear range with the antibody (10–240 μg/L) compared to that of the aptamer (2.5–200 μg/L), but a lower detection limit could be observed in the aptamer-based biosensor. The reproducibility of the two biosensors was comparable. The aptamers were equivalent or superior to antibodies in terms of specificity and sensitivity. In addition, the aptamer receptors could tolerate repeated affine layer regeneration after ligand binding and recycling of the biosensor with little loss of sensitivity. When stored for three weeks, the frequency shifts of the aptamer-coated crystals were all greater than 90% of those on the response at the first day.
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Affiliation(s)
- Chunyan Yao
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; E-Mails (C.-Y.Y.); (Y.-H.Z.); (H.X.)
| | - Tangyou Zhu
- Department of Dermatology, Daping Hospital, Third Military Medical University, Chongqing 400042, China; E-Mail:
| | - Yongzhi Qi
- Department of Laboratory Medicine, the General Navy Hospital, Beijing 100037, China; E-Mail:
| | - Yuhui Zhao
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; E-Mails (C.-Y.Y.); (Y.-H.Z.); (H.X.)
| | - Han Xia
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; E-Mails (C.-Y.Y.); (Y.-H.Z.); (H.X.)
| | - Weiling Fu
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; E-Mails (C.-Y.Y.); (Y.-H.Z.); (H.X.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-23-68754429; Fax: +86-23-65460909
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