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Mi W, Zhang X, Wang B, Sun R, Ma S, Hu Z, Dai X. Absolute protein quantification based on calibrated particle counting using electrospray-differential mobility analysis. Anal Chim Acta 2024; 1304:342534. [PMID: 38637035 DOI: 10.1016/j.aca.2024.342534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 04/20/2024]
Abstract
The traceability of in vitro diagnostics or drug products is based on the accurate quantification of proteins. In this study, we developed an absolute quantification approach for proteins. This method is based on calibrated particle counting using electrospray-differential mobility analysis (ES-DMA) coupled with a condensation particle counter (CPC). The absolute concentration of proteins was quantified with the observed protein particle number measured with ES-DMA-CPC, and the detection efficiency was determined by calibrators. The measurement performance and quantitative level were verified using two certificated reference materials, BSA and NIMCmAb. The linear regression fit for the detection efficiency values of three reference materials and one highly purified protein (myoglobin, BSA, NIMCmAb and fibrinogen) indicated that the detection efficiency and the particle size distribution of these proteins exhibited a linear relationship. Moreover, to explore the suitability of the detection efficiency-particle size curve for protein quantification, the concentrations of three typical proteinaceous particles, including two high molecular weight proteins (NIST reference material 8671 and D-dimer) and one protein complex (glutathione S-transferase dimer), were determined. This work suggests that this calibrated particle counting method is an efficient approach for nondestructive, rapid and accurate quantification of proteins, especially for measuring proteinaceous particles with tremendous size and without reference standards.
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Affiliation(s)
- Wei Mi
- National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China.
| | - Xinyi Zhang
- National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China
| | - Bin Wang
- National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China
| | - Ruixue Sun
- College of Life Sciences, China Jiliang University, Xueyuan Street 258, Hangzhou, 310018, China
| | - Shangying Ma
- College of Life Sciences, China Jiliang University, Xueyuan Street 258, Hangzhou, 310018, China
| | - Zhishang Hu
- National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China.
| | - Xinhua Dai
- National Institute of Metrology, No.18 Beisanhuan Donglu, Beijing, 100029, China.
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2
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Huang J, Zu Y, Zhang L, Cui W. Progress in Procalcitonin Detection Based on Immunoassay. RESEARCH (WASHINGTON, D.C.) 2024; 7:0345. [PMID: 38711476 PMCID: PMC11070848 DOI: 10.34133/research.0345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 03/04/2024] [Indexed: 05/08/2024]
Abstract
Procalcitonin (PCT) serves as a crucial biomarker utilized in diverse clinical contexts, including sepsis diagnosis and emergency departments. Its applications extend to identifying pathogens, assessing infection severity, guiding drug administration, and implementing theranostic strategies. However, current clinical deployed methods cannot meet the needs for accurate or real-time quantitative monitoring of PCT. This review aims to introduce these emerging PCT immunoassay technologies, focusing on analyzing their advantages in improving detection performances, such as easy operation and high precision. The fundamental principles and characteristics of state-of-the-art methods are first introduced, including chemiluminescence, immunofluorescence, latex-enhanced turbidity, enzyme-linked immunosorbent, colloidal gold immunochromatography, and radioimmunoassay. Then, improved methods using new materials and new technologies are briefly described, for instance, the combination with responsive nanomaterials, Raman spectroscopy, and digital microfluidics. Finally, the detection performance parameters of these methods and the clinical importance of PCT detection are also discussed.
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Affiliation(s)
- Jiayue Huang
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy,
Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yan Zu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health); Wenzhou Institute,
University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, P.R. China
| | - Lexiang Zhang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health); Wenzhou Institute,
University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, P.R. China
- Joint Centre of Translational Medicine,
the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, P.R. China
| | - Wenguo Cui
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy,
Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
- Department of Orthopedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases,
Shanghai Institute of Traumatology and Orthopedics,Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, P.R. China
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3
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Lu P, Zhan C, Huang C, Zhou Y, Hong F, Wang Z, Dong Y, Li N, He Q, Chen Y. Cartridge voltage-sensitive micropump immunosensor based on a self-assembled polydopamine coating mediated signal amplification strategy. Biosens Bioelectron 2023; 226:115087. [PMID: 36754742 DOI: 10.1016/j.bios.2023.115087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 01/19/2023]
Abstract
Current biosensing detection assays were developed to focus on rapid, low-cost, stable detection for clinical diagnosis and food safety monitoring. In this work, a novel portable cartridge voltage-sensitive micropump immunosensor (CVMS) biosensing device based on the integration of the microchannel circuit biosensing principle and polydopamine (PDA) was presented for rapid and sensitive detection of pathogenic factors in real samples at trace levels. The CVMS can sensitively evaluate voltage signal changes caused by clogging effects in the closed-loop circuit when the insulated microspheres pass through the microchannel. The targets could trigger the immune reaction between antibody-antigens that leads to the change in the concentration of horseradish peroxidase (HRP). And the HRP was further employed to catalyze the polymerization of dopamine into PDA, resulting in the rapid formation of the magnetic @PDA nanoparticles (MNP@PDA) with core-shell structures. The abundant functional groups on the MNP@PDA surface can efficiently adsorb polystyrene microspheres, thus causing changes in the number of polystyrene microspheres (PS). The CVMS can accurately monitor the change of PS with a portable device, which weighs less than 0.8 kg and costs only $50. The completion of CVMS takes 90 min to complete. The limit of detection of this immunosensor for procalcitonin and ochratoxin A were 42 pg/mL and 77 pg/mL, respectively, which improved about 15 folds and 38 folds, respectively, than those of enzyme-linked immunosorbent assay.
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Affiliation(s)
- Peng Lu
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Chen Zhan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Chenxi Huang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yang Zhou
- College of Engineering, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Feng Hong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Zhilong Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yongzhen Dong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Nan Li
- Daye Public Inspection and Test Center, Daye, 435100, Hubei, China
| | - Qifu He
- Daye Public Inspection and Test Center, Daye, 435100, Hubei, China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Daye Public Inspection and Test Center, Daye, 435100, Hubei, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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4
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Pioz MJ, Espinosa RL, Laguna MF, Santamaria B, Murillo AMM, Hueros ÁL, Quintero S, Tramarin L, Valle LG, Herreros P, Bellido A, Casquel R, Holgado M. A review of Optical Point-of-Care devices to Estimate the Technology Transfer of These Cutting-Edge Technologies. BIOSENSORS 2022; 12:bios12121091. [PMID: 36551058 PMCID: PMC9776401 DOI: 10.3390/bios12121091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/12/2022] [Accepted: 11/18/2022] [Indexed: 06/07/2023]
Abstract
Despite the remarkable development related to Point-of-Care devices based on optical technology, their difficulties when used outside of research laboratories are notable. In this sense, it would be interesting to ask ourselves what the degree of transferability of the research work to the market is, for example, by analysing the relation between the scientific work developed and the registered one, through patent. In this work, we provide an overview of the state-of-the-art in the sector of optical Point-of-Care devices, not only in the research area but also regarding their transfer to market. To this end, we explored a methodology for searching articles and patents to obtain an indicator that relates to both. This figure of merit to estimate this transfer is based on classifying the relevant research articles in the area and the patents that have been generated from these ones. To delimit the scope of this study, we researched the results of a large enough number of publications in the period from 2015 to 2020, by using keywords "biosensor", "optic", and "device" to obtain the most representative articles from Web of Science and Scopus. Then, we classified them according to a particular classification of the optical PoC devices. Once we had this sampling frame, we defined a patent search strategy to cross-link the article with a registered patent (by surfing Google Patents) and classified them accordingly to the categories described. Finally, we proposed a relative figure called Index of Technology Transference (IoTT), which estimates to what extent our findings in science materialized in published articles are protected by patent.
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Affiliation(s)
- María Jesús Pioz
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- University of Nebrija, C/del Hostal, Campus Berzosa, 28248 Madrid, Spain
| | - Rocío L. Espinosa
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - María Fe Laguna
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Beatriz Santamaria
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Metch, Chem & Industrial Design Engineering Department, Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012 Madrid, Spain
| | - Ana María M. Murillo
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Álvaro Lavín Hueros
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Sergio Quintero
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Luca Tramarin
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Luis G Valle
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
| | - Pedro Herreros
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Alberto Bellido
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Multiplex Molecular Diagnostics S.L. C/ Munner 10, 08022 Barcelona, Spain
| | - Rafael Casquel
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Miguel Holgado
- Optics, Photonics and Biophotonics Group, Center for Biomedical Technology, Optics, Universidad Politécnica de Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Group of Organ and Tissue on-a-Chip and In-Vitro Detection, Health Research Institute of the Hospital Clínico San Carlos IdISSC, C/Profesor Martín Lagos s/n, 4ª _Planta Sur, 28040 Madrid, Spain
- Department of Applied Physics and Materials Engineering, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
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5
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Chen R, Dong Y, Hong F, Zhang X, Wang X, Wang J, Chen Y. Polydopamine nanoparticle-mediated, click chemistry triggered, microparticle-counting immunosensor for the sensitive detection of ochratoxin A. JOURNAL OF HAZARDOUS MATERIALS 2022; 428:128206. [PMID: 35033914 DOI: 10.1016/j.jhazmat.2021.128206] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
A rapid and accurate detection method is needed for the quantitation of ochratoxin A in agricultural products due to its high toxicity. A microparticle-counting immunosensor based on polydopamine nanoparticle-mediated click chemistry was established for the highly-sensitive detection of ochratoxin A. Polydopamine nanoparticles with good biocompatibility and a strong metal-chelating ability were synthesized and conjugated with the antibody. The Coupled compounds were then used as an immune carrier to change the Cu2+ concentration via an immuno-reaction. Some of the remaining Cu2+ ions were reduced to Cu+ ions, which caused azide-polystyrene microspheres and alkyne-polystyrene microspheres to aggregate via a Cu+ ion-mediated click reaction. Particle counting was used to distinguish changes in the sizes of the polystyrene microspheres from dispersed to aggregated to detect ochratoxin A. It showed a wide linear detection range of 0.5-800 ng/mL, and a detection limit of 0.2 ng/mL. This assay provides an attractive analytical tool for the accurate detection of trace targets in complex samples.
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Affiliation(s)
- Rui Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yongzhen Dong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Feng Hong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xiya Zhang
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Road, Zhengzhou, Henan 450002, China
| | - Xiaohong Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Jia Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Hubei Hongshan Laboratory, Wuhan, Hubei 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 518000, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China.
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6
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7
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Bacheschi DT, Polsky W, Kobos Z, Yosinski S, Menze L, Chen J, Reed MA. Overcoming the sensitivity vs. throughput tradeoff in Coulter counters: A novel side counter design. Biosens Bioelectron 2020; 168:112507. [PMID: 32905926 DOI: 10.1016/j.bios.2020.112507] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 11/25/2022]
Abstract
Microfabricated Coulter counters are attractive for point of care (POC) applications since they are label free and compact. However, these approaches inherently suffer from a trade off between sample throughput and sensitivity. The counter measures a change in impedance due to displaced fluid volume by passing cells, and thus the counter's signal increases with the fraction of the sensing volume displaced. Reducing the size of the sensing region requires reductions in volumetric throughput in the absence of increased hydraulic pressure and sensor bandwidth. The risk of mechanical clog formation, rendering the counter inoperable, increases markedly with reductions in the size of the constriction aperture. We present here a microfluidic coplanar Coulter counter device design that overcomes the problem of constriction clogging while capable of operating in microfluidic channels filled entirely with highly conductive sample. The device utilizes microfabricated planar electrodes projecting into one side of the microfluidic channel and is easily integrated with upstream electronic, hydrodynamic, or other focusing units to produce efficient counting which could allow for dramatically increased volumetric and sample throughput. The design lends itself to simple, cost effective POC applications.
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Affiliation(s)
- Daniel T Bacheschi
- Department of Electrical Engineering, Yale University, New Haven, CT, United States
| | - William Polsky
- Department of Mechanical Engineering, Yale University, New Haven, CT, United States
| | - Zachary Kobos
- Department of Electrical Engineering, Yale University, New Haven, CT, United States
| | - Shari Yosinski
- Department of Electrical Engineering, Yale University, New Haven, CT, United States; Department of Biomedical Engineering, Yale University, New Haven, CT, United States
| | - Lukas Menze
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
| | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada
| | - Mark A Reed
- Department of Electrical Engineering, Yale University, New Haven, CT, United States; Department of Applied Physics, Yale University, New Haven, CT, United States.
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8
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Sun Q, Zheng W, Lin C, Shen D. A Low-Cost Micro-Volume Nephelometric System for Quantitative Immunoagglutination Assays. SENSORS 2019; 19:s19204359. [PMID: 31600932 PMCID: PMC6832725 DOI: 10.3390/s19204359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/29/2019] [Accepted: 10/02/2019] [Indexed: 12/11/2022]
Abstract
Immunoassays have been widely used in scientific research and clinical diagnosis due to their versatile detection capability and high specificity. Immunoagglutination assays are kinds of immunoassay, which can simply and rapidly measure the concentration of analytes. In this work, we developed a low-cost micro-volume nephelometric system for quantitative immunoagglutination assays. We used off-the-shelf components to build the system, and the total cost of key components is only about 20 US dollars. The total detection volume in our system was as low as 3 µL, which could significantly reduce the reagent cost and required sample volume. We further evaluated the system performance via the immunoagglutination assay to measure the concentration of C-reactive protein, a plasma protein with levels rising in response to inflammation. The results demonstrated that our system could measure the concentration of analytes with relatively high sensitivity and precision within four minutes, and has high potential to be applied for clinical diagnostic tests.
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Affiliation(s)
- Qiqi Sun
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
- Edan Instruments, Inc., Shenzhen 518067, China.
| | - Wei Zheng
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Chao Lin
- Edan Instruments, Inc., Shenzhen 518067, China.
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9
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Harink B, Nguyen H, Thorn K, Fordyce P. An open-source software analysis package for Microspheres with Ratiometric Barcode Lanthanide Encoding (MRBLEs). PLoS One 2019; 14:e0203725. [PMID: 30901328 PMCID: PMC6430362 DOI: 10.1371/journal.pone.0203725] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 02/20/2019] [Indexed: 12/26/2022] Open
Abstract
Multiplexed bioassays, in which multiple analytes of interest are probed in parallel within a single small volume, have greatly accelerated the pace of biological discovery. Bead-based multiplexed bioassays have many technical advantages, including near solution-phase kinetics, small sample volume requirements, many within-assay replicates to reduce measurement error, and, for some bead materials, the ability to synthesize analytes directly on beads via solid-phase synthesis. To allow bead-based multiplexing, analytes can be synthesized on spectrally encoded beads with a 1:1 linkage between analyte identity and embedded codes. Bead-bound analyte libraries can then be pooled and incubated with a fluorescently-labeled macromolecule of interest, allowing downstream quantification of interactions between the macromolecule and all analytes simultaneously via imaging alone. Extracting quantitative binding data from these images poses several computational image processing challenges, requiring the ability to identify all beads in each image, quantify bound fluorescent material associated with each bead, and determine their embedded spectral code to reveal analyte identities. Here, we present a novel open-source Python software package (the mrbles analysis package) that provides the necessary tools to: (1) find encoded beads in a bright-field microscopy image; (2) quantify bound fluorescent material associated with bead perimeters; (3) identify embedded ratiometric spectral codes within beads; and (4) return data aggregated by embedded code and for each individual bead. We demonstrate the utility of this package by applying it towards analyzing data generated via multiplexed measurement of calcineurin protein binding to MRBLEs (Microspheres with Ratiometric Barcode Lanthanide Encoding) containing known and mutant binding peptide motifs. We anticipate that this flexible package should be applicable to a wide variety of assays, including simple bead or droplet finding analysis, quantification of binding to non-encoded beads, and analysis of multiplexed assays that use ratiometric, spectrally encoded beads.
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Affiliation(s)
- Björn Harink
- Department of Genetics, Stanford University, Stanford, California, United States of America
| | - Huy Nguyen
- Department of Genetics, Stanford University, Stanford, California, United States of America
| | - Kurt Thorn
- Department of Biochemistry & Biophysics, University of California, San Francisco, United States of America
| | - Polly Fordyce
- Department of Genetics, Stanford University, Stanford, California, United States of America
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
- ChEM-H Institute, Stanford University, Stanford, California, United States of America
- Chan Zuckerberg Biohub, San Francisco, California, United States of America
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10
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Vaclavek T, Prikryl J, Foret F. Resistive pulse sensing as particle counting and sizing method in microfluidic systems: Designs and applications review. J Sep Sci 2018; 42:445-457. [PMID: 30444312 DOI: 10.1002/jssc.201800978] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 11/10/2022]
Abstract
Resistive pulse sensing is a well-known and established method for counting and sizing particles in ionic solutions. Throughout its development the technique has been expanded from detection of biological cells to counting nanoparticles and viruses, and even registering individual molecules, e.g., nucleotides in nucleic acids. This technique combined with microfluidic or nanofluidic systems shows great potential for various bioanalytical applications, which were hardly possible before microfabrication gained the present broad adoption. In this review, we provide a comprehensive overview of microfluidic designs along with electrode arrangements with emphasis on applications focusing on bioanalysis and analysis of single cells that were reported within the past five years.
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Affiliation(s)
- Tomas Vaclavek
- Department of Bioanalytical Instrumentation, Institute of Analytical Chemistry of the CAS, Brno, Czech Republic.,Department of Biochemistry, Masaryk University, Brno, Czech Republic
| | - Jan Prikryl
- Department of Bioanalytical Instrumentation, Institute of Analytical Chemistry of the CAS, Brno, Czech Republic
| | - Frantisek Foret
- Department of Bioanalytical Instrumentation, Institute of Analytical Chemistry of the CAS, Brno, Czech Republic
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Cui W, He M, Mu L, Lin Z, Wang Y, Pang W, Reed M, Duan X. Cellphone-Enabled Microwell-Based Microbead Aggregation Assay for Portable Biomarker Detection. ACS Sens 2018; 3:432-440. [PMID: 29350517 DOI: 10.1021/acssensors.7b00866] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Quantitative biomarker detection methods featured with rapidity, high accuracy, and label-free are demonstrated for the development of point-of-care (POC) technologies or "beside" diagnostics. Microbead aggregation via protein-specific linkage provides an effective approach for selective capture of biomarkers from the samples, and can directly readout the presence and amount of the targets. However, sensors or microfluidic analyzers that can accurately quantify the microbead aggregation are scared. In this work, we demonstrate a microwell-based microbeads analyzing system, by which online manipulations of microbeads including trapping, arraying, and rotations can be realized, providing a series of microfluidic approaches to layout the aggregated microbeads for further convenient characterizations. Prostate specific antigen is detected using the proposed system, demonstrating the limit of detection as low as 0.125 ng/mL (3.67 pM). A two-step reaction kinetics model is proposed for the first time to explain the dynamic process of microbeads aggregation. The developed microbeads aggregation analysis system has the advantages of label-free detection, high throughput, and low cost, showing great potential for portable biomarker detection.
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Affiliation(s)
- Weiwei Cui
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Meihang He
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Luye Mu
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Zuzeng Lin
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Yanyan Wang
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Wei Pang
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Mark Reed
- Department of Electrical Engineering and Yale University, New Haven, Connecticut 06520, United States
| | - Xuexin Duan
- State Key Laboratory of Precision Measuring Technology & Instruments, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
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KC P, Liu F, Zhe J, Zhang G. Development and Comparison of Two Immuno-disaggregation Based Bioassays for Cell Secretome Analysis. Am J Cancer Res 2018; 8:328-340. [PMID: 29290811 PMCID: PMC5743551 DOI: 10.7150/thno.21917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/17/2017] [Indexed: 01/09/2023] Open
Abstract
Cell secretome analysis has gained increasing attention towards the development of effective strategies for disease treatment. Analysis of cell secretome enables the platform to monitor the status of disease progression, facilitating therapeutic outcomes. However, cell secretome analysis is very challenging due to its versatile and dynamic composition. Here, we report the development of two immuno-disaggregation bioassays using functionalized microparticles for the quantitative analysis of the cell secretome. Methods: We evaluated the feasibility of our developed immuno-disaggregation bioassays using antibody-conjugated MPs and protein-conjugated MPs for the detection of target cell secretome protein. The vascular endothelial growth factor (VEGF)-165 protein was tested as a model cell secretome protein in the serum and serum-free conditions. The status of MP aggregates was examined with a light microscopy and AccuSizerTM 780 Optical Particle Sizer. The accuracy of our bioassays measurement was compared with standard ELISA method. Results: The developed bioassays successfully detected target VEGF protein present in serum-free buffer and serum-containing complete cell culture medium with high sensitivity and specificity. Additionally, the immuno-disaggregation bioassays using antibody-conjugated MPs and protein-conjugated MPs have a wide detection range from 0.01 ng/mL to 100 ng/mL and 0.5 ng/mL to 100 ng/mL, respectively. The sensitivity of the bioassay using antibody-conjugated MPs was approximately one order of magnitude higher than the bioassay using protein-conjugated MPs. Conclusion: Our promising results indicate the potential of the developed bioassays as powerful platforms for the quantitative analysis of cell secretome.
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Dai S, Wu S, Duan N, Wang Z. A near-infrared magnetic aptasensor for Ochratoxin A based on near-infrared upconversion nanoparticles and magnetic nanoparticles. Talanta 2016; 158:246-253. [DOI: 10.1016/j.talanta.2016.05.063] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/17/2016] [Accepted: 05/24/2016] [Indexed: 01/06/2023]
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Amperometric IFN-γ immunosensors with commercially fabricated PCB sensing electrodes. Biosens Bioelectron 2016; 86:805-810. [PMID: 27479047 DOI: 10.1016/j.bios.2016.07.075] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 11/22/2022]
Abstract
Lab-on-a-Chip (LoC) technology has the potential to revolutionize medical Point-of-Care diagnostics. Currently, considerable research efforts are focused on innovative production technologies that will make commercial upscaling of lab-on-chip products financially viable. Printed circuit board (PCB) manufacturing techniques have several advantages in this field. In this paper we focus on transferring a complete IFN-γ enzyme-linked immune-sorbent assay (ELISA) onto a commercial PCB electrochemical biosensing platform, We adapted a commercially available ELISA to detect the enzyme product TMB/H2O2 using amperometry, successfully reproducing the colorimetry-obtained ELISA standard curve. The results demonstrate the potential for the integration of these components into an automated, disposable, electronic ELISA Lab-on-PCB diagnostic platform.
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