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Yang X, Luo Y, Liu Y, Gong C, Wang Y, Rao YJ, Peng GD, Gong Y. Mass production of thin-walled hollow optical fibers enables disposable optofluidic laser immunosensors. LAB ON A CHIP 2020; 20:923-930. [PMID: 32022063 DOI: 10.1039/c9lc01216h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Disposable biosensors are of great importance in disease diagnosis due to their inherent merits of no cross-contamination and ease of use. Optofluidic laser (OFL) sensors are a new category of sensitive biosensors; however, it is challenging to cost-effectively mass-produce them to achieve disposability. Here, we report a disposable optofluidic laser immunosensor based on thin-walled hollow optical fibers (HOFs). Using a fiber draw tower, the fabrication parameters, including drawing speed and gas flow rate, are explored, and the HOF geometry is precisely controlled, which allows identical laser microring resonators to be distributed along the fibers. The disposable OFL immunosensor detects the protein concentration in the HOF through a wash-free immunoassay. Enabled by the disposable sensors, the statistical characteristics of 80 tests for each concentration greatly reduces the bioassay uncertainty. A low coefficient of variation (CV) of 3.3% confirms the high reproducibility of the disposable HOF-OFL sensors, and the mean of the normal distribution of the logarithmic OFL intensity serves as the sensing output. A limit of detection of 11 nM within a short assay time of 15 min is achieved. These disposable immunosensors possess the advantages of low cost, high reproducibility, fast assay, and low-volume consumption of sample and reagents. We believe that this work will inspire disposable optofluidics through the mass production of multifunctional microstructured optical fibers.
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Affiliation(s)
- Xi Yang
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China.
| | - Yanhua Luo
- School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Yiling Liu
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China.
| | - Chaoyang Gong
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China. and School of Electrical and Electronics Engineering, Nanyang Technological University, 50 Nanyang Ave, Singapore, 639798, Singapore
| | - Yanqiong Wang
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China.
| | - Yun-Jiang Rao
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China.
| | - Gang-Ding Peng
- School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Yuan Gong
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education of China), University of Electronic Science and Technology of China, No. 2006, Xiyuan Ave., Chengdu, 611731, China.
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Kim YK, Lim SI, Choi S, Cho IS, Park EH, An DJ. A novel assay for detecting canine parvovirus using a quartz crystal microbalance biosensor. J Virol Methods 2015; 219:23-27. [PMID: 25813597 PMCID: PMC7119597 DOI: 10.1016/j.jviromet.2015.03.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 03/12/2015] [Accepted: 03/16/2015] [Indexed: 11/25/2022]
Abstract
ProLinker™ B, Calixcrown derivatives, makes antibody positioned be more regular with the right orientation on gold-coated quartz surface. The ProLinker-coated QCM showed a superior sensitivity and could detect at low CPV concentration than commercial immunochromatography Ag kit. The QCM biosensor described herein is eminently suitable for the rapid diagnosis of CPV infection with high sensitivity and specificity.
Rapid and accurate diagnosis is crucial to reduce both the shedding and clinical signs of canine parvovirus (CPV). The quartz crystal microbalance (QCM) is a new tool for measuring frequency changes associated with antigen–antibody interactions. In this study, the QCM biosensor and ProLinker™ B were used to rapidly diagnosis CPV infection. ProLinker™ B enables antibodies to be attached to a gold-coated quartz surface in a regular pattern and in the correct orientation for antigen binding. Receiver operating characteristics (ROC) curves were used to set a cut-off value using reference CPVs (two groups: one CPV-positive and one CPV-negative). The ROC curves overlapped and the point of intersection was used as the cut-off value. A QCM biosensor with a cut-off value of −205 Hz showed 95.4% (104/109) sensitivity and 98.0% (149/152) specificity when used to test 261 field fecal samples compared to PCR. In conclusion, the QCM biosensor described herein is eminently suitable for the rapid diagnosis of CPV infection with high sensitivity and specificity. Therefore, it is a promising analytical tool that will be useful for clinical diagnosis, which requires rapid and reliable analyses.
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Affiliation(s)
- Yong Kwan Kim
- Viral Disease Division, Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, 430-757, Republic of Korea
| | - Seong-In Lim
- Viral Disease Division, Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, 430-757, Republic of Korea
| | - Sarah Choi
- Viral Disease Division, Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, 430-757, Republic of Korea
| | - In-Soo Cho
- Viral Disease Division, Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, 430-757, Republic of Korea
| | - Eun-Hye Park
- The Catholic University of Korea, Gyeonggi-do, 420-743, Republic of Korea
| | - Dong-Jun An
- Viral Disease Division, Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, 430-757, Republic of Korea.
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Mirmohseni A, Abdollahi H, Rostamizadeh K. Net analyte signal-based simultaneous determination of ethanol and water by quartz crystal nanobalance sensor. Anal Chim Acta 2007; 585:179-84. [DOI: 10.1016/j.aca.2006.11.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2006] [Revised: 10/17/2006] [Accepted: 11/29/2006] [Indexed: 10/23/2022]
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Su X. Covalent DNA immobilization on polymer-shielded silver-coated quartz crystal microbalance using photobiotin-based UV irradiation. Biochem Biophys Res Commun 2002; 290:962-6. [PMID: 11798167 DOI: 10.1006/bbrc.2001.6297] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The use of a commercial, silver-coated quartz crystal microbalance (QCM) as a disposable, low-cost, and reliable DNA sensor is presented. This is an incorporation of polymer-based silver electrode shielding and photochemistry-based surface modification for covalent DNA immobilization. To prevent undesired oxidation, the silver electrodes are coated with thin polystyrene films. The polymer surfaces are then modified by a photoreactive biotin derivative (photobiotin) under UV irradiation. The resulting biotin residues on the polymer-shielded surface react with a tetrameric avidin. Consequently a biotin-labeled DNA probe can be immobilized through a biotin-avidin-biotin bridge. A 14-mer single-stranded biotin-DNA probe and a 70-mer single-stranded DNA fragment containing complementary or noncomplementary sequences are used as a model system for DNA hybridization assay on the proposed sensors. The shielding ability of the polystyrene coatings after photo irradiation is investigated. The DNA probe binding capacity, hybridization efficiency, and kinetics are also investigated.
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Affiliation(s)
- Xiaodi Su
- Micro- & Nano-System Lab, Institute of Materials Research & Engineering, 3 Research Link, 117602, Singapore.
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Su X, O'Shea SJ. Determination of monoenzyme- and bienzyme-stimulated precipitation by a cuvette-based surface plasmon resonance instrument. Anal Biochem 2001; 299:241-6. [PMID: 11730349 DOI: 10.1006/abio.2001.5429] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This paper describes the use of a cuvette-based surface plasmon resonance (SPR) instrument to measure biocatalyzed precipitation reactions. Enzyme-modified SPR sensor disk forms the base of a cuvette, in which the substrate solution is added with stirring. The determination of the substrate concentration relies on the measurement of SPR angle shift (Deltatheta(SPR)) induced by the deposition of the insoluble products without involving in any electrochemical reactions. As examples, horseradish peroxidase (HRP)-modified monoenzyme SPR sensor and HRP-glucose oxidase bienzyme-layered sensor are created to determine hydrogen peroxide and glucose via the catalyzed oxidation of 4-chloro-1-naphthol (4-CN). The deposition of the oxidized 4-CN-insoluble products leads to SPR angle shifts, which are linear to H(2)O(2) and glucose in the concentration ranges of 0.067-7.24 x 10(-5) and 0.7-8.3 x 10(-4) mM, respectively. The SPR sensitivities are greater than those of nonelectrochemical quartz crystal microbalance (QCM) (the parallel results in this study) and compare favorable with those of electrochemical QCM and electrochemical SPR methods. This study opens the field for enhanced SPR measurements by using biocatalyzed precipitation as a signal amplification method.
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Affiliation(s)
- X Su
- Micro- and Nano-System Laboratory, Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602.
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