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Wen K, Chen Y, Meng X, Botros S, Dai W, Stojanovic MN, Tomer R, Lin Q. A Microfluidic Dual-Aptamer Sandwich Assay for Rapid and Cost-Effective Detection of Recombinant Proteins. Microchem J 2023; 188:108454. [PMID: 36992861 PMCID: PMC10041396 DOI: 10.1016/j.microc.2023.108454] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
While monitoring expression of recombinant proteins is essential for obtaining high-quality biopharmaceutical and biotechnological products, existing assays for recombinant protein detection are laborious, time-consuming and expensive. This paper presents a microfluidic approach to rapid and cost-effective detection of tag-fused recombinant proteins via a dual-aptamer sandwich assay. Our approach addresses limitations in current methods for both dual-aptamer assays and generation of aptamers for such assays by first using microfluidic technology to isolate the aptamers rapidly and then employing these aptamers to implement a microfluidic dual-aptamer assay for tag-fused recombinant protein detection. The use of microfluidic technology enables the fast generation of aptamers and rapid detection of recombinant proteins with minimized consumption of reagents. In addition, compared with antibodies, aptamers as low-cost affinity reagents with an ability of reversible denaturation further decreases the cost of recombinant protein detection. For demonstration, an aptamer pair is isolated rapidly toward His-tagged IgE within two days, and then used in the microfluidic dual-aptamer assay for detecting His-tagged IgE in cell culture media within 10 min and with a limit of detection of 7.1 nM.
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Affiliation(s)
- Kechun Wen
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Yannan Chen
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Xin Meng
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Samantha Botros
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Wenting Dai
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Milan N. Stojanovic
- Division of Experimental Therapeutics, Department of Medicine and Department of Biomedical Engineering, Columbia University, New York, NY, 10032, USA
| | - Raju Tomer
- Department of Biological Sciences, Columbia University, New York, NY, 10027, USA
| | - Qiao Lin
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
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2
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Debnath N, Live LS, Poudineh M. A microfluidic plasma separation device combined with a surface plasmon resonance biosensor for biomarker detection in whole blood. LAB ON A CHIP 2023; 23:572-579. [PMID: 36723239 DOI: 10.1039/d2lc00693f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Biomarker detection in whole blood enables understanding of the cause, progression, relapse or outcome of treatment of a disease. Conventional biomarker detection techniques, such as enzyme-linked immunosorbent assay, polymerase chain reaction, and immunofluorescence, require long assay time, costly laboratory instruments, large reagent volume and sample pre-processing. Hence, there is an unmet need for reliable capture and detection of biomarkers in unprocessed blood which are adaptable to point-of-care (POC) testing. Here, we present a simple, low-cost, and rapid protein detection device from whole blood samples which has the potential to be employed in a POC setting. The platform consists of two components: a plasma separation device that extracts plasma from whole blood without the application of any external active forces and a SPR sensor chip that uses a label-free optical technique for the detection of biomarkers in the extracted plasma. We have demonstrated the detection of IgG and IgM biomolecules in unprocessed blood at concentrations lower than the physiological value within 15 min. The proposed technique has the potential for improving the diagnosis and screening of many diseases, including cancer, influenza, human immunodeficiency virus, and SARS-Cov2 at POC.
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Affiliation(s)
- Nandini Debnath
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | | | - Mahla Poudineh
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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3
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Yin B, Qian C, Wan X, Muhtasim Fuad Sohan A, Lin X. Tape integrated self-designed microfluidic chip for point-of-care immunoassays simultaneous detection of disease biomarkers with tunable detection range. Biosens Bioelectron 2022; 212:114429. [DOI: 10.1016/j.bios.2022.114429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 01/04/2023]
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4
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Park S, Sabbagh B, Abu-Rjal R, Yossifon G. Digital microfluidics-like manipulation of electrokinetically preconcentrated bioparticle plugs in continuous-flow. LAB ON A CHIP 2022; 22:814-825. [PMID: 35080550 DOI: 10.1039/d1lc00864a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Herein, we demonstrate digital microfluidics-like manipulations of preconcentrated biomolecule plugs within a continuous flow that is different from the commonly known digital microfluidics involving discrete (i.e. droplets) media. This is realized using one- and two-dimensional arrays of individually addressable ion-permselective membranes with interconnecting microfluidic channels. The location of powered electrodes, dictates which of the membranes are active and generates either enrichment/depletion diffusion layers, which, in turn, control the location of the preconcentrated plug. An array of such powered membranes enables formation of multiple preconcentrated plugs of the same biosample as well as of preconcentrated plugs of multiple biosample types introduced via different inlets in a selective manner. Moreover, digital-microfluidics operations such as up-down and left-right translation, merging, and splitting, can be realized, but on preconcentrated biomolecule plugs instead of on discrete droplets. This technology, based on nanoscale electrokinetics of ion transport through permselective medium, opens future opportunities for smart and programmable digital-like manipulations of preconcentrated biological particle plugs for various on-chip biological applications.
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Affiliation(s)
- Sinwook Park
- Faculty of Mechanical Engineering, Micro- and Nanofluidics Laboratory, Technion - Israel Institute of Technology, Technion City 3200000, Israel.
| | - Barak Sabbagh
- Faculty of Mechanical Engineering, Micro- and Nanofluidics Laboratory, Technion - Israel Institute of Technology, Technion City 3200000, Israel.
| | - Ramadan Abu-Rjal
- Faculty of Mechanical Engineering, Micro- and Nanofluidics Laboratory, Technion - Israel Institute of Technology, Technion City 3200000, Israel.
| | - Gilad Yossifon
- Faculty of Mechanical Engineering, Micro- and Nanofluidics Laboratory, Technion - Israel Institute of Technology, Technion City 3200000, Israel.
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5
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Konoplev G, Agafonova D, Bakhchova L, Mukhin N, Kurachkina M, Schmidt MP, Verlov N, Sidorov A, Oseev A, Stepanova O, Kozyrev A, Dmitriev A, Hirsch S. Label-Free Physical Techniques and Methodologies for Proteins Detection in Microfluidic Biosensor Structures. Biomedicines 2022; 10:207. [PMID: 35203416 PMCID: PMC8868674 DOI: 10.3390/biomedicines10020207] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/01/2022] [Accepted: 01/11/2022] [Indexed: 12/25/2022] Open
Abstract
Proteins in biological fluids (blood, urine, cerebrospinal fluid) are important biomarkers of various pathological conditions. Protein biomarkers detection and quantification have been proven to be an indispensable diagnostic tool in clinical practice. There is a growing tendency towards using portable diagnostic biosensor devices for point-of-care (POC) analysis based on microfluidic technology as an alternative to conventional laboratory protein assays. In contrast to universally accepted analytical methods involving protein labeling, label-free approaches often allow the development of biosensors with minimal requirements for sample preparation by omitting expensive labelling reagents. The aim of the present work is to review the variety of physical label-free techniques of protein detection and characterization which are suitable for application in micro-fluidic structures and analyze the technological and material aspects of label-free biosensors that implement these methods. The most widely used optical and impedance spectroscopy techniques: absorption, fluorescence, surface plasmon resonance, Raman scattering, and interferometry, as well as new trends in photonics are reviewed. The challenges of materials selection, surfaces tailoring in microfluidic structures, and enhancement of the sensitivity and miniaturization of biosensor systems are discussed. The review provides an overview for current advances and future trends in microfluidics integrated technologies for label-free protein biomarkers detection and discusses existing challenges and a way towards novel solutions.
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Affiliation(s)
- Georgii Konoplev
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
| | - Darina Agafonova
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
| | - Liubov Bakhchova
- Institute for Automation Technology, Otto-von-Guericke-University Magdeburg, 39106 Magdeburg, Germany;
| | - Nikolay Mukhin
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
- Department of Engineering, University of Applied Sciences Brandenburg, 14770 Brandenburg an der Havel, Germany; (M.K.); (S.H.)
| | - Marharyta Kurachkina
- Department of Engineering, University of Applied Sciences Brandenburg, 14770 Brandenburg an der Havel, Germany; (M.K.); (S.H.)
| | - Marc-Peter Schmidt
- Faculty of Electrical Engineering, University of Applied Sciences Dresden, 01069 Dresden, Germany;
| | - Nikolay Verlov
- Molecular and Radiation Biophysics Division, Petersburg Nuclear Physics Institute Named by B.P. Konstantinov, National Research Centre Kurchatov Institute, 188300 Gatchina, Russia;
| | - Alexander Sidorov
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
- Fuculty of Photonics, ITMO University, 197101 Saint Petersburg, Russia
| | - Aleksandr Oseev
- FEMTO-ST Institute, CNRS UMR-6174, University Bourgogne Franche-Comté, 25000 Besançon, France;
| | - Oksana Stepanova
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
| | - Andrey Kozyrev
- Faculty of Electronics, Saint Petersburg Electrotechnical University “LETI”, 197376 Saint Petersburg, Russia; (D.A.); (A.S.); (O.S.); (A.K.)
| | - Alexander Dmitriev
- Department of Ecological Physiology, Federal State Budgetary Scientific Institution “Institute of Experimental Medicine” (FSBSI “IEM”), 197376 Saint Petersburg, Russia;
| | - Soeren Hirsch
- Department of Engineering, University of Applied Sciences Brandenburg, 14770 Brandenburg an der Havel, Germany; (M.K.); (S.H.)
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6
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Toppi A, Busk LL, Hu H, Dogan AA, Jönsson A, Taboryski RJ, Dufva M. Photolithographic Patterning of FluorAcryl for Biphilic Microwell-Based Digital Bioassays and Selection of Bacteria. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43914-43924. [PMID: 34491739 DOI: 10.1021/acsami.1c10096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
FluorAcryl 3298 (FA) is a UV-curable fluoroacrylate polymer commonly employed as a chemically resistant, hydrophobic, and oleophobic coating. Here, FA was used in a cleanroom-based microstructuring process to fabricate hydrophilic-in-hydrophobic (HiH) micropatterned surfaces containing femtoliter-sized well arrays. A short protocol involving direct UV photopatterning, an etching step, and final recovery of the hydrophobic properties of the polymer produced patterned substrates with micrometer resolution. Specifically, HiH microwell arrays were obtained with a well diameter of 10 μm and various well depths ranging from 300 nm to 1 μm with high reproducibility. The 300 nm deep microdroplet array (MDA) substrates were used for digital immunoassays, which presented a limit of detection in the attomolar range. This demonstrated the chemical functionality of the hydrophilic and hydrophobic surfaces. Furthermore, the 1 μm deep wells could efficiently capture particles such as bacteria, whereas the 300 nm deep substrates or other types of flat HiH molecular monolayers could not. Capturing a mixture of bacteria expressing red- and green-fluorescent proteins, respectively, served as a model for screening and selection of specific phenotypes using FA-MDAs. Here, green-fluorescent bacteria were specifically selected by overlaying a solution of gelatin methacryloyl (GelMA) mixed with a photoinitiator and using a high-magnification objective, together with custom pinholes, in a common fluorescence microscope to cross-link the hydrogel around the bacteria of interest. In conclusion, due to the straightforward processing, versatility, and low-price, FA is an advantageous alternative to more commonly used fluorinated materials, such as CYTOP or Teflon-AF, for the fabrication of HiH microwell arrays and other biphilic microstructures.
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Affiliation(s)
- Arianna Toppi
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Louise L Busk
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Hongxia Hu
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Asli A Dogan
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Alexander Jönsson
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Rafael J Taboryski
- DTU Nanolab, National Centre for Nano Fabrication and Characterization, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Martin Dufva
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
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7
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Wu J, Dai B, Li Z, Pan T, Zhang D, Lin F. Emerging optofluidic technologies for biodiagnostic applications. VIEW 2021. [DOI: 10.1002/viw.20200035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Jiandong Wu
- Bionic Sensing and Intelligence Center Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen China
| | - Bo Dai
- Engineering Research Center of Optical Instrument and System Ministry of Education Shanghai Key Laboratory of Modern Optical System University of Shanghai for Science and Technology Shanghai China
| | - Zhenqing Li
- Engineering Research Center of Optical Instrument and System Ministry of Education Shanghai Key Laboratory of Modern Optical System University of Shanghai for Science and Technology Shanghai China
| | - Tingrui Pan
- Department of Biomedical Engineering University of California Davis California USA
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System Ministry of Education Shanghai Key Laboratory of Modern Optical System University of Shanghai for Science and Technology Shanghai China
| | - Francis Lin
- Department of Physics and Astronomy University of Manitoba Winnipeg Manitoba Canada
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8
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Hartanto H, Wu M, Lam ML, Chen TH. Microfluidic immunoassay for detection of serological antibodies: A potential tool for rapid evaluation of immunity against SARS-CoV-2. BIOMICROFLUIDICS 2020; 14:061507. [PMID: 33343783 PMCID: PMC7738199 DOI: 10.1063/5.0031521] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 11/23/2020] [Indexed: 05/06/2023]
Abstract
In December 2019, coronavirus disease 2019 became a pandemic affecting more than 200 countries and territories. Millions of lives are still affected because of mandatory quarantines, which hamstring economies and induce panic. Immunology plays a major role in the modern field of medicine, especially against virulent infectious diseases. In this field, neutralizing antibodies are heavily studied because they reflect the level of infection and individuals' immune status, which are essential when considering resumption of work, flight travel, and border entry control. More importantly, it also allows evaluating the antiviral vaccine efficacy as vaccines are still known for being the ultimate intervention method to inhibit the rapid spread of virulent infectious diseases. In this Review, we first introduce the host immune response after the infection of SARS-CoV-2 and discuss the latest results using conventional immunoassays. Next, as an enabling platform for detection with sufficient sensitivity while saving analysis time and sample size, the progress of microfluidic-based immunoassays is discussed and compared based on surface modification, microfluidic kinetics, signal output, signal amplification, sample matrix, and the detection of anti-SARS-CoV-2 antibodies. Based on the overall comparison, this Review concludes by proposing the future integration of visual quantitative signals on microfluidic devices as a more suitable approach for general use and large-scale surveillance.
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Affiliation(s)
- Hogi Hartanto
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Minghui Wu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Miu Ling Lam
- School of Creative Media, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
| | - Ting-Hsuan Chen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong Special Administrative Region 999077, China
- Author to whom correspondence should be addressed:
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9
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Zheng F, He E, Wang Z, Huang J, Li Z. Mosaic Immunoassays Integrated with Microfluidic Channels for High-Throughput Parallel Detection. Anal Chem 2020; 92:5688-5694. [PMID: 32212688 DOI: 10.1021/acs.analchem.0c00537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using the ice-printing technique, we have integrated micromosaic immunoassays (μMIAs) with microfluidic channels, which reduces the sample consumption and response time and allows high-throughput parallel detection. The ice-printing method is a low-temperature and contaminant-free process, which is more convenient, precise, and biofriendly than the traditional fabrication method. Meanwhile, based on the ice-drying process, this method can obtain a uniform distribution of the residue protein patterns, which leads to a uniform fluorescence result. As a proof of concept, the test of stability, sensitivity, and specificity of μMIA based on one-step ELISA are demonstrated. In this device, immobilized antigens surrounded with ice could remain biological at -20 °C for months.
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Affiliation(s)
- Fengyi Zheng
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Enqi He
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Zhongyan Wang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Jiasheng Huang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
| | - Zhihong Li
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
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10
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Chen S, Wang Z, Cui X, Jiang L, Zhi Y, Ding X, Nie Z, Zhou P, Cui D. Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA. NANOSCALE RESEARCH LETTERS 2019; 14:71. [PMID: 30820698 PMCID: PMC6395463 DOI: 10.1186/s11671-019-2857-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/06/2019] [Indexed: 05/27/2023]
Abstract
How to fabricate scale low-cost microfluidic device for detection of biomarkers owns a great requirement. Herein, it is for the first time reported that a new microfluidic device based on bonding polydimethylsiloxane microfluidic channels onto the substrate of a screen-printed electrode with coating glass solution was fabricated for electrochemical sensing of prostate-specific antigen (PSA). Compared to traditional microfabrication processes, this method is simple, fast, low cost, and also suitable for mass production. The prepared screen-printed electrode-based microfluidic device (CASPE-MFD) was used for the detection of the PSA in human serum. The prepared CASPE-MFD had a detection limit of 0.84 pg/mL (25.8 fM) and a good linearity with PSA concentration ranging from 0.001 to 10 ng/mL, which showed a great promise platform toward the development of miniaturized, low-cost electrochemical microfluidic device for use in human health, environmental monitoring, and other applications.
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Affiliation(s)
- Shouhui Chen
- Center of Food Safety Engineering and Technology Research, Shanghai, Key Laboratory of Urban Agriculture, Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Zhihua Wang
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Center for Intelligent Instrument for Diagnosis and Therapy, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Xinyuan Cui
- Department of Medical Imaging, Second Clinical College of Chongqing Medical University, No.74 Linjiang Road, Yuzhong District, Chongqing, 400016 China
| | - Linlei Jiang
- Center of Food Safety Engineering and Technology Research, Shanghai, Key Laboratory of Urban Agriculture, Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Yuee Zhi
- Center of Food Safety Engineering and Technology Research, Shanghai, Key Laboratory of Urban Agriculture, Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Xianting Ding
- Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030 China
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742 USA
| | - Pei Zhou
- Center of Food Safety Engineering and Technology Research, Shanghai, Key Laboratory of Urban Agriculture, Ministry of Agriculture, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, Shanghai Engineering Research Center for Intelligent Instrument for Diagnosis and Therapy, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
- National Center for Translational Medicine, Collaborative Innovational Center for System Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
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Murphy C, Stack E, Krivelo S, Breheny M, Ma H, O'Kennedy R. Enhancing recombinant antibody performance by optimally engineering its format. J Immunol Methods 2018; 463:127-133. [DOI: 10.1016/j.jim.2018.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/11/2018] [Accepted: 10/11/2018] [Indexed: 12/18/2022]
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12
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Pham NM, Rusch S, Temiz Y, Lovchik RD, Beck HP, Karlen W, Delamarche E. A bead-based immunogold-silver staining assay on capillary-driven microfluidics. Biomed Microdevices 2018; 20:41. [PMID: 29781041 DOI: 10.1007/s10544-018-0284-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Point-of-care (POC) diagnostics are critically needed for the detection of infectious diseases, particularly in remote settings where accurate and appropriate diagnosis can save lives. However, it is difficult to implement immunoassays, and specifically immunoassays relying on signal amplification using silver staining, into POC diagnostic devices. Effective immobilization of antibodies in such devices is another challenge. Here, we present strategies for immobilizing capture antibodies (cAbs) in capillary-driven microfluidic chips and implementing a gold-catalyzed silver staining reaction. We illustrate these strategies using a species/anti-species immunoassay and the capillary assembly of fluorescent microbeads functionalized with cAbs in "bead lanes", which are engraved in microfluidic chips. The microfluidic chips are fabricated in silicon (Si) and sealed with a dry film resist. Rabbit IgG antibodies in samples are captured on the beads and bound by detection antibodies (dAbs) conjugated to gold nanoparticles. The gold nanoparticles catalyze the formation of a metallic film of silver, which attenuates fluorescence from the beads in an analyte-concentration dependent manner. The performance of these immunoassays was found comparable to that of assays performed in 96 well microtiter plates using "classical" enzyme-linked immunosorbent assay (ELISA). The proof-of-concept method developed here can detect 24.6 ng mL-1 of rabbit IgG antibodies in PBS within 20 min, in comparison to 17.1 ng mL-1 of the same antibodies using a ~140-min-long ELISA protocol. Furthermore, the concept presented here is flexible and necessitate volumes of samples and reagents in the range of just a few microliters.
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Affiliation(s)
- Ngoc M Pham
- ETH Zürich, Mobile Health Systems Lab, Institute for Robotics and Intelligent Systems, Department of Health Sciences and Technology, BAA, Lengghalde 5, 8092, Zürich, Switzerland
| | - Sebastian Rusch
- Swiss Tropical and Public Health Institute, Socinstrasse 57, 4051, Basel, Switzerland.,University of Basel, Petersgraben 1, 4001, Basel, Switzerland.,Kantonsspital Aarau AG, Institut für Labormedizin, Medizinische Genetik, Tellstrasse 25, CH-5001, Aarau, Switzerland
| | - Yuksel Temiz
- IBM Research - Zurich, Säumerstrasse 4, CH-8803, Rüschlikon, Switzerland
| | - Robert D Lovchik
- IBM Research - Zurich, Säumerstrasse 4, CH-8803, Rüschlikon, Switzerland
| | - Hans-Peter Beck
- Swiss Tropical and Public Health Institute, Socinstrasse 57, 4051, Basel, Switzerland.,University of Basel, Petersgraben 1, 4001, Basel, Switzerland
| | - Walter Karlen
- ETH Zürich, Mobile Health Systems Lab, Institute for Robotics and Intelligent Systems, Department of Health Sciences and Technology, BAA, Lengghalde 5, 8092, Zürich, Switzerland
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Abstract
Water quality detection plays an increasingly important role in environmental protection. In this work, a novel colorimeter based on the Beer-Lambert law was designed for chemical element detection in water with high precision and miniaturized structure. As an example, the colorimeter can detect phosphorus, which was accomplished in this article to evaluate the performance. Simultaneously, a modified algorithm was applied to extend the linear measurable range. The colorimeter encompassed a near infrared laser source, a microflow cell based on microfluidic technology and a light-sensitive detector, then Micro-Electro-Mechanical System (MEMS) processing technology was used to form a stable integrated structure. Experiments were performed based on the ammonium molybdate spectrophotometric method, including the preparation of phosphorus standard solution, reducing agent, chromogenic agent and color reaction. The device can obtain a wide linear response range (0.05 mg/L up to 7.60 mg/L), a wide reliable measuring range up to 10.16 mg/L after using a novel algorithm, and a low limit of detection (0.02 mg/L). The size of flow cell in this design is 18 mm × 2.0 mm × 800 μm, obtaining a low reagent consumption of 0.004 mg ascorbic acid and 0.011 mg ammonium molybdate per determination. Achieving these advantages of miniaturized volume, high precision and low cost, the design can also be used in automated in situ detection.
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14
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Yoshikawa H, Yoshinaga M, Tamiya E. An optical pickup enzyme-linked immunosorbent assay (ELISA) with a microfluidic disk. RSC Adv 2018; 8:14510-14514. [PMID: 35540764 PMCID: PMC9082109 DOI: 10.1039/c8ra01149d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/11/2018] [Indexed: 01/04/2023] Open
Abstract
We evaluated optical pickup ELISA with an original microfluidic disk that contains eight radially arranged channels, which enable semi-automatic sample loading and washing. This disk-shaped chip composed of acrylic plates was fabricated by CO2 laser machining and capture antibodies were immobilized in the channels. After the immunoreaction with antigens and enzyme-linked secondary antibodies, an enzyme-catalyzed nanoaggregation of o-phenylenediamine was detected by measuring the reflectivity change of a laser beam focused in the channel. The assay of C-reactive protein (CRP) was successfully performed in a short amount of time (approximately 20 min from CRP loading). The limit of detection was determined to be 2 ng mL−1, which is more sensitive as compared with conventional ELISA using microplates. Optical pickup ELISA with an original microfluidic disk, which enable semi-automatic sample loading and washing, was developed. The rapid and sensitive assay of C-reactive protein (CRP) was successfully performed.![]()
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Affiliation(s)
- H. Yoshikawa
- Department of Applied Physics
- Osaka University
- Suita
- Japan
| | - M. Yoshinaga
- Department of Applied Physics
- Osaka University
- Suita
- Japan
| | - E. Tamiya
- Department of Applied Physics
- Osaka University
- Suita
- Japan
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15
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Advantages, Disadvantages and Modifications of Conventional ELISA. SPRINGERBRIEFS IN APPLIED SCIENCES AND TECHNOLOGY 2018. [DOI: 10.1007/978-981-10-6766-2_5] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Costantini F, Tiggelaar RM, Salvio R, Nardecchia M, Schlautmann S, Manetti C, Gardeniers HJGE, de Cesare G, Caputo D, Nascetti A. An All-Glass Microfluidic Network with Integrated Amorphous Silicon Photosensors for on-Chip Monitoring of Enzymatic Biochemical Assay. BIOSENSORS-BASEL 2017; 7:bios7040058. [PMID: 29206205 PMCID: PMC5746781 DOI: 10.3390/bios7040058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/01/2017] [Accepted: 12/02/2017] [Indexed: 12/27/2022]
Abstract
A lab-on-chip system, integrating an all-glass microfluidics and on-chip optical detection, was developed and tested. The microfluidic network is etched in a glass substrate, which is then sealed with a glass cover by direct bonding. Thin film amorphous silicon photosensors have been fabricated on the sealed microfluidic substrate preventing the contamination of the micro-channels. The microfluidic network is then made accessible by opening inlets and outlets just prior to the use, ensuring the sterility of the device. The entire fabrication process relies on conventional photolithographic microfabrication techniques and is suitable for low-cost mass production of the device. The lab-on-chip system has been tested by implementing a chemiluminescent biochemical reaction. The inner channel walls of the microfluidic network are chemically functionalized with a layer of polymer brushes and horseradish peroxidase is immobilized into the coated channel. The results demonstrate the successful on-chip detection of hydrogen peroxide down to 18 μM by using luminol and 4-iodophenol as enhancer agent.
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Affiliation(s)
- Francesca Costantini
- School of Aerospace Engineering, Sapienza University of Rome, via Salaria n. 851/881, 00138 Rome, Italy.
- Department of Chemistry, Sapienza University of Rome, p.le Aldo Moro n.5, 00185 Rome, Italy.
| | - Roald M Tiggelaar
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
- NanoLab cleanroom, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
| | - Riccardo Salvio
- Department of Chemistry, Sapienza University of Rome, p.le Aldo Moro n.5, 00185 Rome, Italy.
| | - Marco Nardecchia
- School of Aerospace Engineering, Sapienza University of Rome, via Salaria n. 851/881, 00138 Rome, Italy.
| | - Stefan Schlautmann
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
| | - Cesare Manetti
- Department of Environmental Biology, Sapienza University of Rome, p.le Aldo Moro n.5, 00185 Rome Italy.
| | - Han J G E Gardeniers
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
| | - Giampiero de Cesare
- Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, Via Eudossiana, 18, 00184 Rome, Italy.
| | - Domenico Caputo
- Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, Via Eudossiana, 18, 00184 Rome, Italy.
| | - Augusto Nascetti
- School of Aerospace Engineering, Sapienza University of Rome, via Salaria n. 851/881, 00138 Rome, Italy.
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17
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Khalilpour A, Kilic T, Khalilpour S, Álvarez MM, Yazdi IK. Proteomic-based biomarker discovery for development of next generation diagnostics. Appl Microbiol Biotechnol 2016; 101:475-491. [PMID: 28013407 DOI: 10.1007/s00253-016-8029-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/22/2016] [Accepted: 11/25/2016] [Indexed: 01/09/2023]
Abstract
In the post-genome age, proteomics is receiving significant attention because they provide an invaluable source of biological structures and functions at the protein level. The search for disease-specific biomarkers for diagnostic and/or therapeutic applications is one of the areas that proteomics is having a significant impact. Thus, the identification of a "good" biomarker enables a more accurate early diagnosis and prognosis of disease. Rapid advancements in mass spectrometry (MS) instrumentation, liquid chromatography MS (LCMS), protein microarray technology, and other protein profiling methodologies have a substantial expansion of our toolbox to identify disease-specific protein and peptide biomarkers. This review covers a selection of widely used proteomic technologies for biomarker discovery. In addition, we describe the most commonly used approaches for diagnosis based on proteomic biomarkers and further discuss trends and critical challenges during development of cost-effective rapid diagnostic tests and microfluidic diagnostic systems based on proteomic biomarkers.
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Affiliation(s)
- Akbar Khalilpour
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA. .,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Tugba Kilic
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.,Department of Biomedical Engineering, Faculty of Engineering and Architecture, Izmir Katip Celebi University, 35620, Izmir, Turkey.,Department of Biotechnology, Institute of Science, Ege University, 35100, Izmir, Turkey
| | - Saba Khalilpour
- Department of Pharmacological and Biomolecular Sciences (DiSFeB), Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - Mario Moisés Álvarez
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Iman K Yazdi
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 65 Landsdowne Street, Rm. 265, Cambridge, MA, 02139, USA.,Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, 02139, USA
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18
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Zangheri M, Di Nardo F, Mirasoli M, Anfossi L, Nascetti A, Caputo D, De Cesare G, Guardigli M, Baggiani C, Roda A. Chemiluminescence lateral flow immunoassay cartridge with integrated amorphous silicon photosensors array for human serum albumin detection in urine samples. Anal Bioanal Chem 2016; 408:8869-8879. [DOI: 10.1007/s00216-016-9991-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 09/02/2016] [Accepted: 09/29/2016] [Indexed: 01/27/2023]
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19
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Liu RT, Tao LQ, Liu B, Tian XG, Mohammad MA, Yang Y, Ren TL. A Miniaturized On-Chip Colorimeter for Detecting NPK Elements. SENSORS 2016; 16:s16081234. [PMID: 27527177 PMCID: PMC5017399 DOI: 10.3390/s16081234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 07/19/2016] [Accepted: 08/02/2016] [Indexed: 01/19/2023]
Abstract
Recently, precision agriculture has become a globally attractive topic. As one of the most important factors, the soil nutrients play an important role in estimating the development of precision agriculture. Detecting the content of nitrogen, phosphorus and potassium (NPK) elements more efficiently is one of the key issues. In this paper, a novel chip-level colorimeter was fabricated to detect the NPK elements for the first time. A light source–microchannel photodetector in a sandwich structure was designed to realize on-chip detection. Compared with a commercial colorimeter, all key parts are based on MEMS (Micro-Electro-Mechanical System) technology so that the volume of this on-chip colorimeter can be minimized. Besides, less error and high precision are achieved. The cost of this colorimeter is two orders of magnitude less than that of a commercial one. All these advantages enable a low-cost and high-precision sensing operation in a monitoring network. The colorimeter developed herein has bright prospects for environmental and biological applications.
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Affiliation(s)
- Rui-Tao Liu
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
| | - Lu-Qi Tao
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
| | - Bo Liu
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
| | - Xiang-Guang Tian
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
| | - Mohammad Ali Mohammad
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan.
| | - Yi Yang
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
| | - Tian-Ling Ren
- Institute of Microelectronics, Tsinghua University, Beijing 100084, China.
- Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China.
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20
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Ma Y, Mao Y, Huang D, He Z, Yan J, Tian T, Shi Y, Song Y, Li X, Zhu Z, Zhou L, Yang CJ. Portable visual quantitative detection of aflatoxin B1 using a target-responsive hydrogel and a distance-readout microfluidic chip. LAB ON A CHIP 2016; 16:3097-104. [PMID: 27302553 DOI: 10.1039/c6lc00474a] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Aflatoxin B1 (AFB1), as the secondary metabolite of molds, is the most predominant and toxic mycotoxin that seriously threatens the health of humans and animals. In this work, an AFB1-responsive hydrogel was synthesized for highly sensitive and portable detection of AFB1. The AFB1-responsive hydrogel was prepared using an AFB1 aptamer and its two short complementary DNA strands as cross-linkers. For visual detection of AFB1, the hydrogel is preloaded with gold nanoparticles (AuNPs). Upon introduction of AFB1, the AFB1 aptamer binds with AFB1, leading to the disruption of the hydrogel and release of the AuNPs with a distinct color change of the supernatant from colorless to red. In order to lower the detection limit and extend the method to quantitative analysis, a distance-readout volumetric bar chart chip (V-chip) was combined with an AFB1-responsive hydrogel preloaded with platinum nanoparticles (PtNPs). In the presence of AFB1, the hydrogel collapses and releases PtNPs which can catalyze the decomposition of H2O2 to generate O2. The increasing gas pressure moves a red ink bar in the V-chip and provides a quantitative relationship between the distance and the concentration of AFB1. The method was applied for detection of AFB1 in beer, with a detection limit of 1.77 nM (0.55 ppb) where an immunoaffinity column (IAC) of AFB1 was used to cleanup and pre-concentrate the sample, which satisfies the testing requirement of 2.0 ppb set by the European Union. The combination of an AFB1-responsive hydrogel with a distance-based readout V-chip offers a user-friendly POCT device, which has great potential for rapid, portable, selective, and quantitative detection of AFB1 in real samples to ensure food safety and avoid subsequent economic losses.
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Affiliation(s)
- Yanli Ma
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Yu Mao
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Di Huang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Zhe He
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Jinmao Yan
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Tian Tian
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Yuanzhi Shi
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Yanling Song
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Xingrui Li
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Zhi Zhu
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Leiji Zhou
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Chaoyong James Yang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory for Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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21
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Zangheri M, Mirasoli M, Nascetti A, Caputo D, Bonvicini F, Gallinella G, de Cesare G, Roda A. Microfluidic cartridge with integrated array of amorphous silicon photosensors for chemiluminescence detection of viral DNA. SENSING AND BIO-SENSING RESEARCH 2016. [DOI: 10.1016/j.sbsr.2016.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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22
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He JL, Wang DS, Fan SK. Opto-Microfluidic Immunosensors: From Colorimetric to Plasmonic. MICROMACHINES 2016; 7:E29. [PMID: 30407402 PMCID: PMC6189923 DOI: 10.3390/mi7020029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/25/2016] [Accepted: 02/04/2016] [Indexed: 02/06/2023]
Abstract
Optical detection has long been the most popular technique in immunosensing. Recent developments in the synthesis of luminescent probes and the fabrication of novel nanostructures enable more sensitive and efficient optical detection, which can be miniaturized and integrated with microfluidics to realize compact lab-on-a-chip immunosensors. These immunosensors are portable, economical and automated, but their sensitivity is not compromised. This review focuses on the incorporation and implementation of optical detection and microfluidics in immunosensors; it introduces the working principles of each optical detection technique and how it can be exploited in immunosensing. The recent progress in various opto-microfluidic immunosensor designs is described. Instead of being comprehensive to include all opto-microfluidic platforms, the report centers on the designs that are promising for point-of-care immunosensing diagnostics, in which ease of use, stability and cost-effective fabrication are emphasized.
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Affiliation(s)
- Jie-Long He
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Da-Shin Wang
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | - Shih-Kang Fan
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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23
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Jolly P, Damborsky P, Madaboosi N, Soares RRG, Chu V, Conde JP, Katrlik J, Estrela P. DNA aptamer-based sandwich microfluidic assays for dual quantification and multi-glycan profiling of cancer biomarkers. Biosens Bioelectron 2015; 79:313-9. [PMID: 26720920 DOI: 10.1016/j.bios.2015.12.058] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/11/2015] [Accepted: 12/18/2015] [Indexed: 12/19/2022]
Abstract
Two novel sandwich-based immunoassays for prostate cancer (PCa) diagnosis are reported, in which the primary antibody for capture is replaced by a DNA aptamer. The assays, which can be performed in parallel, were developed in a microfluidic device and tested for the detection of free Prostate Specific Antigen (fPSA). A secondary antibody (Aptamer-Antibody Assay) or a lectin (Aptamer-Lectin Assay) is used to quantify, by chemiluminescence, both the amount of fPSA and its glycosylation levels. The use of aptamers enables a more reliable, selective and controlled sensing of the analyte. The dual approach provides sensitive detection of fPSA along with selective fPSA glycoprofiling, which is of significant importance in the diagnosis and prognosis of PCa, as tumor progression is associated with changes in fPSA glycosylation. With these approaches, we can potentially detect 0.5 ng/mL of fPSA and 3 ng/mL of glycosylated fPSA using Sambucus nigra (SNA) lectin, both within the relevant clinical range. The approach can be applied to a wide range of biomarkers, thus providing a good alternative to standard antibody-based immunoassays with significant impact in medical diagnosis and prognosis.
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Affiliation(s)
- Pawan Jolly
- Department of Electronic & Electrical Engineering, University of Bath, Bath BA2 7AY, United Kingdom.
| | - Pavel Damborsky
- Department of Glycobiotechnology, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 84105, Slovakia.
| | - Narayanan Madaboosi
- INESC-MN - Microsystems and Nanotechnologies, R. Alves Redol 9, 1000-029 Lisboa, Portugal.
| | - Ruben R G Soares
- INESC-MN - Microsystems and Nanotechnologies, R. Alves Redol 9, 1000-029 Lisboa, Portugal; Department of Bioengineering, Instituto Superior Técnico, University of Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Virginia Chu
- INESC-MN - Microsystems and Nanotechnologies, R. Alves Redol 9, 1000-029 Lisboa, Portugal.
| | - João P Conde
- INESC-MN - Microsystems and Nanotechnologies, R. Alves Redol 9, 1000-029 Lisboa, Portugal; Department of Bioengineering, Instituto Superior Técnico, University of Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Jaroslav Katrlik
- Department of Glycobiotechnology, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 84105, Slovakia.
| | - Pedro Estrela
- Department of Electronic & Electrical Engineering, University of Bath, Bath BA2 7AY, United Kingdom.
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24
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On-chip quantitative detection of pathogen genes by autonomous microfluidic PCR platform. Biosens Bioelectron 2015. [DOI: 10.1016/j.bios.2015.07.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Vistas CR, Soares SS, Rodrigues RMM, Chu V, Conde JP, Ferreira GNM. An amorphous silicon photodiode microfluidic chip to detect nanomolar quantities of HIV-1 virion infectivity factor. Analyst 2015; 139:3709-13. [PMID: 24922601 DOI: 10.1039/c4an00695j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A hydrogenated amorphous silicon (a-Si:H) photosensor was explored for the quantitative detection of a HIV-1 virion infectivity factor (Vif) at a detection limit in the single nanomolar range. The a-Si:H photosensor was coupled with a microfluidic channel that was functionalized with a recombinant single chain variable fragment antibody. The biosensor selectively recognizes HIV-1 Vif from human cell extracts.
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Affiliation(s)
- Cláudia R Vistas
- IBB-Institute for Biotechnology and Bioengineering, Centre for Molecular and Structural Biomedicine (CBME), University of Algarve, Campus de Gambelas, 8000-139 Faro, Portugal.
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26
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Gang A, Haustein N, Baraban L, Cuniberti G. Multifunctional reversibly sealable microfluidic devices for patterned material deposition approaches. RSC Adv 2015. [DOI: 10.1039/c4ra15785k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
We present reversibly sealable microfluidic devices with versatile channel designs, withstanding pressures up to 600 kPa, which can be applied for direct printing of electronic interconnects on flexible surfaces as well as micropatterning the UV curable materials.
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Affiliation(s)
- A. Gang
- Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden
- 01062 Dresden
- Germany
| | - N. Haustein
- Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden
- 01062 Dresden
- Germany
| | - L. Baraban
- Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden
- 01062 Dresden
- Germany
| | - G. Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden
- 01062 Dresden
- Germany
- Center for Advancing Electronics Dresden (CfAED) TU Dresden
- 01062 Dresden
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27
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Madaboosi N, Soares RRG, Chu V, Conde JP. A microfluidic immunoassay platform for the detection of free prostate specific antigen: a systematic and quantitative approach. Analyst 2015; 140:4423-33. [DOI: 10.1039/c5an00364d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel physisorption- and bio-affinity amplification-based microfluidic immunoassay platform for free PSA detection within a clinically relevant range is reported.
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Affiliation(s)
- Narayanan Madaboosi
- INESC Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Lisbon
- Portugal
| | - Ruben R. G. Soares
- INESC Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Lisbon
- Portugal
- iBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
| | - Virginia Chu
- INESC Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Lisbon
- Portugal
| | - João Pedro Conde
- INESC Microsistemas e Nanotecnologias (INESC MN) and IN – Institute of Nanoscience and Nanotechnology
- Lisbon
- Portugal
- Department of Bioengineering
- Instituto Superior Técnico
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28
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Wang W, Ouyang H, Yang S, Wang L, Fu Z. Multiplexed detection of two proteins by a reaction kinetics-resolved chemiluminescence immunoassay strategy. Analyst 2015; 140:1215-20. [DOI: 10.1039/c4an01921k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A multiplexed immunoassay method was proposed for the sequential detection of two proteins based on a novel chemiluminescence reaction kinetics-resolved strategy.
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Affiliation(s)
- Wenwen Wang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education)
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400716
- China
| | - Hui Ouyang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education)
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400716
- China
| | - Shijia Yang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education)
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400716
- China
| | - Lin Wang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education)
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400716
- China
| | - Zhifeng Fu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education)
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400716
- China
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29
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Chen A, Wang R, Bever CRS, Xing S, Hammock BD, Pan T. Smartphone-interfaced lab-on-a-chip devices for field-deployable enzyme-linked immunosorbent assay. BIOMICROFLUIDICS 2014; 8:064101. [PMID: 25553178 PMCID: PMC4241779 DOI: 10.1063/1.4901348] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 10/30/2014] [Indexed: 05/09/2023]
Abstract
The emerging technologies on mobile-based diagnosis and bioanalytical detection have enabled powerful laboratory assays such as enzyme-linked immunosorbent assay (ELISA) to be conducted in field-use lab-on-a-chip devices. In this paper, we present a low-cost universal serial bus (USB)-interfaced mobile platform to perform microfluidic ELISA operations in detecting the presence and concentrations of BDE-47 (2,2',4,4'-tetrabromodiphenyl ether), an environmental contaminant found in our food supply with adverse health impact. Our point-of-care diagnostic device utilizes flexible interdigitated carbon black electrodes to convert electric current into a microfluidic pump via gas bubble expansion during electrolytic reaction. The micropump receives power from a mobile phone and transports BDE-47 analytes through the microfluidic device conducting competitive ELISA. Using variable domain of heavy chain antibodies (commonly referred to as single domain antibodies or Nanobodies), the proposed device is sensitive for a BDE-47 concentration range of 10(-3)-10(4 ) μg/l, with a comparable performance to that uses a standard competitive ELISA protocol. It is anticipated that the potential impact in mobile detection of health and environmental contaminants will prove beneficial to our community and low-resource environments.
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Affiliation(s)
- Arnold Chen
- Department of Biomedical Engineering, University of California , Davis, California 95616, USA
| | - Royal Wang
- Department of Biomedical Engineering, University of California , Davis, California 95616, USA
| | - Candace R S Bever
- Department of Entomology and Nematology, University of California , Davis, California 95616, USA
| | - Siyuan Xing
- Department of Biomedical Engineering, University of California , Davis, California 95616, USA
| | | | - Tingrui Pan
- Department of Biomedical Engineering, University of California , Davis, California 95616, USA
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30
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Fischer SK, Joyce A, Spengler M, Yang TY, Zhuang Y, Fjording MS, Mikulskis A. Emerging technologies to increase ligand binding assay sensitivity. AAPS JOURNAL 2014; 17:93-101. [PMID: 25331105 DOI: 10.1208/s12248-014-9682-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 10/02/2014] [Indexed: 02/07/2023]
Abstract
Ligand binding assays (LBAs) have been the method of choice for protein analyte measurements for more than four decades. Over the years, LBA methods have improved in sensitivity and achieved larger dynamic ranges by using alternative detection systems and new technologies. As a consequence, the landscape and application of immunoassay platforms has changed dramatically. The introduction of bead-based methods, coupled with single molecule detection standardization and the ability to amplify assay signals, has improved the sensitivity of many immunoassays, in some cases by several logs of magnitude. Three promising immunoassay platforms are described in this article: Single Molecule Counting (SMC™) from Singulex Inc, Single Molecule Arrays (Simoa™) from Quanterix Corporation, and Immuno-PCR (Imperacer®) from Chimera Biotec GmbH. These platforms have the potential to significantly improve immunoassay sensitivity and thereby address the bioanalytical needs and challenges faced during biopharmaceutical drug development.
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Affiliation(s)
- Saloumeh K Fischer
- Department of BioAnalytical Sciences, Genentech, 1 DNA Way, South San Francisco, California, 94080-4990, USA,
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31
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Han Y, Wu H, Liu F, Cheng G, Zhe J. Label-free biomarker assay in a microresistive pulse sensor via immunoaggregation. Anal Chem 2014; 86:9717-22. [PMID: 25226582 DOI: 10.1021/ac502270n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present a label-free biomarker detection method based on immunoaggregation and resistive pulse sensing technology. In this approach, target biomarkers and antibody (Ab)-functionalized microparticles are mixed to form biomarker-microparticle aggregates. A resistive pulse sensor is then used to measure the sizes and count the number of aggregates. The measured volume fraction of the aggregates represents the concentration of the targeted biomarker. In our tests, human ferritin, used as a biomarker, triggered the aggregation of antiferritin Ab-functionalized microparticles in phosphate-buffered saline (PBS). The volume fraction of aggregates increased with the increased ferritin concentration. We also demonstrated the detection of human ferritin in 10% fetal bovine serum (FBS) to mimic a real detection environment in complex media. The detection range from 0.1 to 208 ng/mL was achieved. In addition, we demonstrated that the detection range can be shifted to lower and higher concentrations by decreasing and increasing microparticle concentrations. This biomarker detection method is label-free, rapid, and able to quantitatively measure the concentration of any macromolecular biomarker as long as an antibody can be found, with simple measurement setup and sample preparations.
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Affiliation(s)
- Yu Han
- Department of Mechanical Engineering, and ‡Department of Chemical and Biomolecular Engineering, University of Akron , Akron, Ohio 44325, United States
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32
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Barbosa AI, Castanheira AP, Edwards AD, Reis NM. A lab-in-a-briefcase for rapid prostate specific antigen (PSA) screening from whole blood. LAB ON A CHIP 2014; 14:2918-28. [PMID: 24989886 DOI: 10.1039/c4lc00464g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We present a new concept for rapid and fully portable prostate specific antigen (PSA) measurements, termed "lab-in-a-briefcase", which integrates an affordable microfluidic ELISA platform utilising a melt-extruded fluoropolymer microcapillary film (MCF) containing an array of 10 200 μm internal diameter capillaries, a disposable multi-syringe aspirator (MSA), a sample tray pre-loaded with all of the required immunoassay reagents, and a portable film scanner for colorimetric signal digital quantification. Each MSA can perform 10 replicate microfluidic immunoassays on 8 samples, allowing 80 measurements to be made in less than 15 minutes based on semi-automated operation, without the need of additional fluid handling equipment. The assay was optimised for the measurement of a clinically relevant range of PSA of 0.9 to 60.0 ng ml(-1) in 15 minutes with CVs on the order of 5% based on intra-assay variability when read using a consumer flatbed film scanner. The PSA assay performance in the MSA remained robust in undiluted or 1 : 2 diluted human serum or whole blood, and the matrix effect could simply be overcome by extending sample incubation times. The PSA "lab-in-a-briefcase" is particularly suited to a low-resource health setting, where diagnostic labs and automated immunoassay systems are not accessible, by allowing PSA measurement outside the laboratory using affordable equipment.
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Affiliation(s)
- Ana I Barbosa
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK.
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33
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Recent developments in optical detection technologies in lab-on-a-chip devices for biosensing applications. SENSORS 2014; 14:15458-79. [PMID: 25196161 PMCID: PMC4178989 DOI: 10.3390/s140815458] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/14/2014] [Accepted: 08/15/2014] [Indexed: 01/23/2023]
Abstract
The field of microfluidics has yet to develop practical devices that provide real clinical value. One of the main reasons for this is the difficulty in realizing low-cost, sensitive, reproducible, and portable analyte detection microfluidic systems. Previous research has addressed two main approaches for the detection technologies in lab-on-a-chip devices: (a) study of the compatibility of conventional instrumentation with microfluidic structures, and (b) integration of innovative sensors contained within the microfluidic system. Despite the recent advances in electrochemical and mechanical based sensors, their drawbacks pose important challenges to their application in disposable microfluidic devices. Instead, optical detection remains an attractive solution for lab-on-a-chip devices, because of the ubiquity of the optical methods in the laboratory. Besides, robust and cost-effective devices for use in the field can be realized by integrating proper optical detection technologies on chips. This review examines the recent developments in detection technologies applied to microfluidic biosensors, especially addressing several optical methods, including fluorescence, chemiluminescence, absorbance and surface plasmon resonance.
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Novo P, Chu V, Conde J. Integrated optical detection of autonomous capillary microfluidic immunoassays:a hand-held point-of-care prototype. Biosens Bioelectron 2014; 57:284-91. [DOI: 10.1016/j.bios.2014.02.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 01/22/2014] [Accepted: 02/05/2014] [Indexed: 10/25/2022]
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35
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Multiwell cartridge with integrated array of amorphous silicon photosensors for chemiluminescence detection: development, characterization and comparison with cooled-CCD luminograph. Anal Bioanal Chem 2014; 406:5645-56. [DOI: 10.1007/s00216-014-7971-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/26/2014] [Accepted: 06/12/2014] [Indexed: 11/24/2022]
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36
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Novo P, Chu V, Conde JP. Integrated fluorescence detection of labeled biomolecules using a prism-like PDMS microfluidic chip and lateral light excitation. LAB ON A CHIP 2014; 14:1991-1995. [PMID: 24806101 DOI: 10.1039/c4lc00241e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Microfabricated amorphous silicon photodiodes were integrated with prism-like PDMS microfluidics for the detection and quantification of fluorescence signals. The PDMS device was fabricated with optical quality surfaces and beveled sides. A 405 nm laser beam perpendicular to the lateral sides of the microfluidic device excites the fluorophores in the microchannel at an angle of 70° to the normal to the microchannel/photodiode surface. This configuration, which makes use of the total internal reflection of the excitation beam and the isotropy of the fluorescence emission, minimizes the intensity of excitation light that reaches the integrated photodetector. A difference of two orders of magnitude was achieved in the reduction of the detection noise level as compared with a normally incident excitation configuration. A limit-of-detection of 5.6 × 10(10) antibodies per square centimeter was achieved using antibodies labeled with a model organic fluorophore. Furthermore, the results using the lateral excitation scheme are in good proportionality agreement with those by fluorescence quantification using wide-field fluorescence microscopy.
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Affiliation(s)
- Pedro Novo
- INESC Microsistemas e Nanotecnologias and IN-Institute of Nanoscience and Nanotechnology, Lisbon, Portugal.
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37
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Mirasoli M, Guardigli M, Michelini E, Roda A. Recent advancements in chemical luminescence-based lab-on-chip and microfluidic platforms for bioanalysis. J Pharm Biomed Anal 2014; 87:36-52. [DOI: 10.1016/j.jpba.2013.07.008] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/08/2013] [Accepted: 07/08/2013] [Indexed: 01/27/2023]
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38
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Jung W, Han J, Kai J, Lim JY, Sul D, Ahn CH. An innovative sample-to-answer polymer lab-on-a-chip with on-chip reservoirs for the POCT of thyroid stimulating hormone (TSH). LAB ON A CHIP 2013; 13:4653-62. [PMID: 24121997 DOI: 10.1039/c3lc50403d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A new sample-to-answer polymer lab-on-a-chip, which can perform immunoassay with minimum user intervention through on-chip reservoirs for reagents and single-channel assay system, has been designed, developed and successfully characterized as a point-of-care testing (POCT) cartridge for the detection of thyroid stimulating hormone (TSH). Test results were obtained within 30 minutes after a sample was dropped into the POCT cartridge. The analyzed results of TSH showed a linear range of up to 55 μIU mL(-1) with the limit of detection (LOD) of 1.9 μIU mL(-1) at the signal-to-noise ratio (SNR) of 3. The reagents stored in the on-chip reservoirs maintained more than 97% of their initial volume for 120 days of storage time while the detection antibody retained its activity above 98% for 120 days. The sample-to-answer polymer lab-on-a-chip developed in this work using the mass-producible and low-cost polymer is well suited for the point-of-care testing of rapid in vitro diagnostics (IVD) of TSH.
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Affiliation(s)
- Wooseok Jung
- Microsystems and BioMEMS Laboratory, University of Cincinnati, Cincinnati, OH 45221, USA.
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39
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Abstract
With the experimental tools and knowledge that have accrued from a long history of reductionist biology, we can now start to put the pieces together and begin to understand how biological systems function as an integrated whole. Here, we describe how microfabricated tools have demonstrated promise in addressing experimental challenges in throughput, resolution, and sensitivity to support systems-based approaches to biological understanding.
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Affiliation(s)
- Mei Zhan
- Interdisciplinary Program in Bioengineering, Georgia Institute of Technology, Atlanta, Georgia, United States
| | - Loice Chingozha
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, United States
| | - Hang Lu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, United States
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40
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Han SW, Lee S, Hong J, Jang E, Lee T, Koh WG. Mutiscale substrates based on hydrogel-incorporated silicon nanowires for protein patterning and microarray-based immunoassays. Biosens Bioelectron 2013; 45:129-35. [DOI: 10.1016/j.bios.2013.01.062] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/11/2013] [Accepted: 01/30/2013] [Indexed: 12/26/2022]
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41
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Hu W, Lu Z, Liu Y, Chen T, Zhou X, Li CM. A portable flow-through fluorescent immunoassay lab-on-a-chip device using ZnO nanorod-decorated glass capillaries. LAB ON A CHIP 2013; 13:1797-1802. [PMID: 23483058 DOI: 10.1039/c3lc41382a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a portable flow-through fluorescent immunoassay lab-on-a-chip device using inexpensive disposable glass capillaries for medical diagnostics. The device is made up of a number of serially connected glass capillaries, of which each interior surface is grown using zinc oxide (ZnO) nanorods, which different probe antibodies are attached to. The ZnO nanorods not only provide a large surface area for high density probe attachment, but also enhance the fluorescent signals to significantly improve the detection signal responses. The glass capillary also allows for convenient flow-through detection. Coupled with a homemade handheld analyzer integrated with an automatic pump system and a fluorescence readout module, a portable immunoassay capillary device enables quantitative detection of multiple biomarkers in 30 min with detection limits of 1-5 ng mL(-1) and wide dynamic ranges for prostate specific antigen (PSA), α-Fetoprotein (AFP) and carcinoembryonic antigen (CEA) in serum. This new conceptual lab-on-a-chip device eliminates the need for expensive micro-fabrication processes, while offering inexpensive and disposable, but replaceable tube-type "microchannels" for multiplexed detection in portable clinical diagnostics.
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Affiliation(s)
- Weihua Hu
- Institute of Clean Energy & Advanced Materials, Southwest University, Chongqing, P R China
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42
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Han KN, Li CA, Seong GH. Microfluidic chips for immunoassays. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2013; 6:119-41. [PMID: 23495732 DOI: 10.1146/annurev-anchem-062012-092616] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The use of microfluidic chips for immunoassays has been extensively explored in recent years. The combination of immunoassays and microfluidics affords a promising platform for multiple, sensitive, and automatic point-of-care (POC) diagnostics. In this review, we focus on the description of recent achievements in microfluidic chips for immunoassays categorized by their detection method. Following a brief introduction to the basic principles of each detection method, we examine current microfluidic immunosensor detection systems in detail. We also highlight interesting strategies for sensitive immunosensing configurations, multiplexed analysis, and POC diagnostics in microfluidic immunosensors.
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Affiliation(s)
- Kwi Nam Han
- Department of Bionanoengineering, Hanyang University, Ansan 426-791, South Korea.
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43
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Novo P, Volpetti F, Chu V, Conde JP. Control of sequential fluid delivery in a fully autonomous capillary microfluidic device. LAB ON A CHIP 2013; 13:641-645. [PMID: 23263650 DOI: 10.1039/c2lc41083d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Microfluidics and miniaturization of biosensors are fundamental for the development of point-of-care (PoC) diagnostic and analytical tools with the potential of decreasing reagent consumption and time of analysis while increasing portability. However, interfacing microfluidics with fluid control systems is still a limiting factor in practical implementation. We demonstrate an innovative capillary microfluidic design that allows sequential insertion of controlled volumes of liquids into a microfluidic channel with general applicability. The system requires only the placing of liquids at the corresponding inlets. Subsequently, the different solutions flow inside the microfluidic device sequentially and autonomously without the use of valves using integrated capillary pumps. The capillary microfluidic system is demonstrated with a model immunoassay.
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Affiliation(s)
- Pedro Novo
- INESC Microsistemas e Nanotecnologias and IN-Institute of Nanoscience and Nanotechnology, Lisbon, Portugal
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44
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Novo P, Moulas G, Chu V, Conde J. Lab-on-Chip Prototype Platform for Ochratoxin A Detection in Wine and Beer. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proeng.2012.09.206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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