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Shinar R, Shinar J. Organic Electronics-Microfluidics/Lab on a Chip Integration in Analytical Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:8488. [PMID: 37896581 PMCID: PMC10611406 DOI: 10.3390/s23208488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/15/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
Organic electronics (OE) technology has matured in displays and is advancing in solid-state lighting applications. Other promising and growing uses of this technology are in (bio)chemical sensing, imaging, in vitro cell monitoring, and other biomedical diagnostics that can benefit from low-cost, efficient small devices, including wearable designs that can be fabricated on glass or flexible plastic. OE devices such as organic LEDs, organic and hybrid perovskite-based photodetectors, and organic thin-film transistors, notably organic electrochemical transistors, are utilized in such sensing and (bio)medical applications. The integration of compact and sensitive OE devices with microfluidic channels and lab-on-a-chip (LOC) structures is very promising. This survey focuses on studies that utilize this integration for a variety of OE tools. It is not intended to encompass all studies in the area, but to present examples of the advances and the potential of such OE technology, with a focus on microfluidics/LOC integration for efficient wide-ranging sensing and biomedical applications.
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Affiliation(s)
- Ruth Shinar
- Electrical & Computer Engineering Department, Iowa State University, Ames, IA 50011, USA
| | - Joseph Shinar
- Physics & Astronomy Department and Ames National Laboratory—USDOE, Iowa State University, Ames, IA 50011, USA
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2
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Chen F, Bao L, Zhang Y, Wang R, Liu J, Hai W, Liu Y. NiCoP/g-C 3N 4 Nanocomposites-Based Electrochemical Immunosensor for Sensitive Detection of Procalcitonin. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23094348. [PMID: 37177552 PMCID: PMC10181558 DOI: 10.3390/s23094348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Herein, an ultra-sensitive and facile electrochemical biosensor for procalcitonin (PCT) detection was developed based on NiCoP/g-C3N4 nanocomposites. Firstly, NiCoP/g-C3N4 nanocomposites were synthesized using hydrothermal methods and then functionalized on the electrode surface by π-π stacking. Afterward, the monoclonal antibody that can specifically capture the PCT was successfully linked onto the surface of the nanocomposites with a 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) and N-Hydroxysuccinimide (NHS) condensation reaction. Finally, the modified sensor was employed for the electrochemical analysis of PCT using differential Pulse Voltammetry(DPV). Notably, the larger surface area of g-C3N4 and the higher electron transfer capacity of NiCoP/g-C3N4 endow this sensor with a wider detection range (1 ag/mL to 10 ng/mL) and an ultra-low limit of detection (0.6 ag/mL, S/N = 3). In addition, this strategy was also successfully applied to the detection of PCT in the diluted human serum sample, demonstrating that the developed immunosensors have the potential for application in clinical testing.
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Affiliation(s)
- Furong Chen
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Layue Bao
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Ying Zhang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Ruili Wang
- College of Bioengineering, Beijing Polytechnic, Beijing 100176, China
| | - Jinghai Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Wenfeng Hai
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
| | - Yushuang Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China
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Lian C, Young D, Randall RE, Samuel IDW. Organic Light-Emitting Diode Based Fluorescence-Linked Immunosorbent Assay for SARS-CoV-2 Antibody Detection. BIOSENSORS 2022; 12:1125. [PMID: 36551092 PMCID: PMC9775261 DOI: 10.3390/bios12121125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Immunodiagnostics have been widely used in the detection of disease biomarkers. The conventional immunological tests in central laboratories require expensive equipment and, for non-specialists, the tests are technically demanding and time-consuming, which has prevented their use by the public. Thus, point-of-care tests (POCT), such as lateral flow immunoassays, are being, or have been, developed as more convenient and low-cost methods for immunodiagnostics. However, the sensitivity of such tests is often a concern. Here, a fluorescence-linked immunosorbent assay (FLISA) using organic light-emitting diodes (OLEDs) as excitation light sources was investigated as a way forward for the development of compact and sensitive POCTs. Phycoerythrin (PE) was selected as the fluorescent dye, and OLEDs were designed with different emission spectra. The leakage light of different OLEDs for exciting PE was then investigated to reduce the background noise and improve the sensitivity of the system. Finally, as proof-of-principle that OLED-based technology can be successfully further developed for POCT, antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in human serum was detected by OLED-FLISA.
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Affiliation(s)
- Cheng Lian
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UK
| | - Dan Young
- Centre for Biomolecular Sciences, School of Biology, University of St Andrews, St Andrews KY16 9ST, UK
| | - Richard E. Randall
- Centre for Biomolecular Sciences, School of Biology, University of St Andrews, St Andrews KY16 9ST, UK
| | - Ifor D. W. Samuel
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UK
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Wang C, Zhang Q, Liu X, Li G, Kong H, Khan MI, Xiao H, Wang Y, Liu W, Cao C. Double inner standard plot model of an electrophoresis titration chip for a portable and green assay of protein content in milk. LAB ON A CHIP 2019; 19:484-492. [PMID: 30601538 DOI: 10.1039/c8lc01015c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
High portability and environmental safety ("green") are two of the most important objectives pursued by microfluidic methods. However, there remain many challenges for the design of portable and visual microfluidic methods (e.g., chip electrophoresis) due to use of a cumbersome pump, power supply and detector. Herein, a facile double inner standard plot (DISP) model of electrophoresis titration (ET) was proposed for portable and visual assay of proteins in test milk samples without use of a pump, power supply or detector based on a moving reaction boundary (MRB) chip. The DISP-ET model predicted that: (i) by setting the upper limit (UL) and lower limit (LL) of double inner standard milk protein contents, points U and L were, respectively, achieved in the relationship D = -aC + b (D: MRB motion distance; C: protein content); and (ii) the two points divided both the C-axis and D-axis into "poor", "eligible" and "superior" rulers scaled for quantitative assay of test samples. To demonstrate the model of DISP-ET, an original portable device (120 mm × 78 mm × 30 mm, 341 g) was designed, which had a chip (25 mm × 25 mm × 4 mm) of three channels (15 mm × 200 μm × 80 μm), platinum electrodes, a lithium cell and touch screen. A series of experiments were undertaken based on the developed portable device. The relevant experiments demonstrated systemically the validity of the DISP-ET model, theory and method. In particular, the experiments clearly showed the advantages of the DISP-ET chip: portability, visuality, green use, rapidity, and flexibility for real-life use. Finally, the device was applied for a portable and visual assay of fresh milk from a cow on a dairy farm. The DISP-ET model opens a window for designing portable and visual quantitative methods of food-safety control and clinical diagnoses.
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Affiliation(s)
- Cunhuai Wang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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Lazzaro D, Morigi S, Melpignano P, Loli Piccolomini E, Benini L. Image enhancement variational methods for enabling strong cost reduction in OLED-based point-of-care immunofluorescent diagnostic systems. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2018; 34:e2932. [PMID: 29076644 DOI: 10.1002/cnm.2932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 09/14/2017] [Accepted: 09/23/2017] [Indexed: 06/07/2023]
Abstract
Immunofluorescence diagnostic systems cost is often dominated by high-sensitivity, low-noise CCD-based cameras that are used to acquire the fluorescence images. In this paper, we investigate the use of low-cost CMOS sensors in a point-of-care immunofluorescence diagnostic application for the detection and discrimination of 4 different serotypes of the Dengue virus in a set of human samples. A 2-phase postprocessing software pipeline is proposed, which consists in a first image-enhancement stage for resolution increasing and segmentation and a second diagnosis stage for the computation of the output concentrations. We present a novel variational coupled model for the joint super-resolution and segmentation stage and an automatic innovative image analysis for the diagnosis purpose. A specially designed forward backward-based numerical algorithm is introduced, and its convergence is proved under mild conditions. We present results on a cheap prototype CMOS camera compared with the results of a more expensive CCD device, for the detection of the Dengue virus with a low-cost OLED light source. The combination of the CMOS sensor and the developed postprocessing software allows to correctly identify the different Dengue serotype using an automatized procedure. The results demonstrate that our diagnostic imaging system enables camera cost reduction up to 99%, at an acceptable diagnostic accuracy, with respect to the reference CCD-based camera system. The correct detection and identification of the Dengue serotypes have been confirmed by standard diagnostic methods (RT-PCR and ELISA).
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Affiliation(s)
- D Lazzaro
- Department of Mathematics, University of Bologna, Bologna, Italy
| | - S Morigi
- Department of Mathematics, University of Bologna, Bologna, Italy
| | - P Melpignano
- Or-el d.o.o. Organska elektronika, Kobarid, Slovenia
| | | | - L Benini
- Department of Electrical, Electronic, and Information Engineering, University of Bologna, Bologna, Italy
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7
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Moudgil A, Kalyani N, Sinsinbar G, Das S, Mishra P. S-Layer Protein for Resistive Switching and Flexible Nonvolatile Memory Device. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4866-4873. [PMID: 29308639 DOI: 10.1021/acsami.7b15062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a flexible resistive switching memory device consisting of S-layer protein (Slp) is demonstrated for the first time. This novel device (Al/Slp/indium tin oxide/polyethylene terephthalte) based on a simple and easy fabrication method is capable of bistable switching to low resistive state (LRS) and high resistive state (HRS). This device exhibits bistable memory behavior with stability and a long retention time (>4 × 103 s), being stable up to a 500 cycle endurance test and with significant HRS/LRS ratio. The device possesses consistent switching performance for more than 100 times bending, corresponding to desired applicability for biocompatible wearable electronics. The memory mechanism is attributed to a trapping/de-trapping process in S-layer protein. These promising results of the flexible memory device could find a way in the wearable storage applications like smart bands and sports equipments' sensors.
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Affiliation(s)
- Akshay Moudgil
- Centre for Applied Research in Electronics and ‡Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Neeti Kalyani
- Centre for Applied Research in Electronics and ‡Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Gaurav Sinsinbar
- Centre for Applied Research in Electronics and ‡Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Samaresh Das
- Centre for Applied Research in Electronics and ‡Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Prashant Mishra
- Centre for Applied Research in Electronics and ‡Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
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Mora-Cárdenas E, Marcello A. Switch-on the LAMP to spot Zika. ANNALS OF TRANSLATIONAL MEDICINE 2018; 5:500. [PMID: 29299461 DOI: 10.21037/atm.2017.10.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Erick Mora-Cárdenas
- Laboratory of Molecular Virology, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Alessandro Marcello
- Laboratory of Molecular Virology, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
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9
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Torelli E, Manzano M, Srivastava SK, Marks RS. DNA origami nanorobot fiber optic genosensor to TMV. Biosens Bioelectron 2017; 99:209-215. [PMID: 28759871 DOI: 10.1016/j.bios.2017.07.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 07/04/2017] [Accepted: 07/20/2017] [Indexed: 01/17/2023]
Abstract
In the quest of greater sensitivity and specificity of diagnostic systems, one continually searches for alternative DNA hybridization methods, enabling greater versatility and where possible field-enabled detection of target analytes. We present, herein, a hybrid molecular self-assembled scaffolded DNA origami entity, intimately immobilized via capture probes linked to aminopropyltriethoxysilane, onto a glass optical fiber end-face transducer, thus producing a novel biosensor. Immobilized DNA nanorobots with a switchable flap can then be actuated by a specific target DNA present in a sample, by exposing a hemin/G-quadruplex DNAzyme, which then catalyzes the generation of chemiluminescence, once the specific fiber probes are immersed in a luminol-based solution. Integrating organic nanorobots to inorganic fiber optics creates a hybrid system that we demonstrate as a proof-of-principle can be utilized in specific DNA sequence detection. This system has potential applications in a wide range of fields, including point-of-care diagnostics or cellular in vivo biosensing when using ultrathin fiber optic probes for research purposes.
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Affiliation(s)
- Emanuela Torelli
- Nanyang Technological University-Hebrew University of Jerusalem-Ben Gurion University (NEW-CREATE) Programme, 1 CREATE Way, Research Wing, #02-06/08, Singapore 138602, Singapore; Dipartimento di Scienze Agroalimentari, Ambientali e Animali University of Udine, via delle Scienze 206, 33100 Udine, Italy.
| | - Marisa Manzano
- Nanyang Technological University-Hebrew University of Jerusalem-Ben Gurion University (NEW-CREATE) Programme, 1 CREATE Way, Research Wing, #02-06/08, Singapore 138602, Singapore; Dipartimento di Scienze Agroalimentari, Ambientali e Animali University of Udine, via delle Scienze 206, 33100 Udine, Italy
| | - Sachin K Srivastava
- Nanyang Technological University-Hebrew University of Jerusalem-Ben Gurion University (NEW-CREATE) Programme, 1 CREATE Way, Research Wing, #02-06/08, Singapore 138602, Singapore
| | - Robert S Marks
- Nanyang Technological University-Hebrew University of Jerusalem-Ben Gurion University (NEW-CREATE) Programme, 1 CREATE Way, Research Wing, #02-06/08, Singapore 138602, Singapore; Ben-Gurion University of the Negev, Department of Biotechnology Engineering, P.O. Box 653, 84-105 Beer-Sheva, Israel.
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10
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Tagliabue G, Faoro V, Rizzo S, Sblattero D, Saccani A, Riccio G, Bellini T, Salina M, Buscaglia M, Marcello A. A label-free immunoassay for Flavivirus detection by the Reflective Phantom Interface technology. Biochem Biophys Res Commun 2017; 492:558-564. [PMID: 28501619 DOI: 10.1016/j.bbrc.2017.05.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 05/03/2017] [Indexed: 01/25/2023]
Abstract
Flaviviruses are widespread and cause clinically relevant arboviral diseases that impact locally and as imported travel-related infections. Direct detection of viraemia is limited, being typically undetectable at onset of symptoms. Therefore, diagnosis is primarily based on serology, which is complicated by high cross-reactivity across different species. The overlapping geographical distribution of the vectors in areas with a weak healthcare system, the increase of international travel and the similarity of symptoms highlight the need for rapid and reliable multi-parametric diagnostic tests in point-of-care formats. To this end we developed a bi-parametric serological microarray using recombinant NS1 proteins from Tick-borne encephalitis virus and West Nile virus coupled to a low-cost, label-free detection device based on the Reflective Phantom Interface (RPI) principle. Specific sequential detection of antibodies in solution demonstrates the feasibility of the approach for the surveillance and diagnosis of Flaviviruses.
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Affiliation(s)
| | - Valentina Faoro
- Molecular Virology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Serena Rizzo
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, 34100 Trieste, Italy
| | - Daniele Sblattero
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, 34100 Trieste, Italy
| | | | | | - Tommaso Bellini
- Proxentia S.r.l., 20139 Milano, Italy; Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, 20090 Segrate, Italy
| | | | - Marco Buscaglia
- Proxentia S.r.l., 20139 Milano, Italy; Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, 20090 Segrate, Italy
| | - Alessandro Marcello
- Molecular Virology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy.
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An overview of innovations and industrial solutions in Protein Microarray Technology. Proteomics 2016; 16:1297-308. [DOI: 10.1002/pmic.201500429] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 01/12/2023]
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12
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Park S, Kang YJ, Majd S. A Review of Patterned Organic Bioelectronic Materials and their Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:7583-7619. [PMID: 26397962 DOI: 10.1002/adma.201501809] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/17/2015] [Indexed: 06/05/2023]
Abstract
Organic electronic materials are rapidly emerging as superior replacements for a number of conventional electronic materials, such as metals and semiconductors. Conducting polymers, carbon nanotubes, graphenes, organic light-emitting diodes, and diamond films fabricated via chemical vapor deposition are the most popular organic bioelectronic materials that are currently under active research and development. Besides the capability to translate biological signals to electrical signals or vice versa, organic bioelectronic materials entail greater biocompatibility and biodegradability compared to conventional electronic materials, which makes them more suitable for biomedical applications. When patterned, these materials bring about numerous capabilities to perform various tasks in a more-sophisticated and high-throughput manner. Here, we provide an overview of the unique properties of organic bioelectronic materials, different strategies applied to pattern these materials, and finally their applications in the field of biomedical engineering, particularly biosensing, cell and tissue engineering, actuators, and drug delivery.
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Affiliation(s)
- SooHyun Park
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - You Jung Kang
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Sheereen Majd
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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13
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A new spot quality control for protein macroarray based on immunological detection. Talanta 2015; 138:176-182. [DOI: 10.1016/j.talanta.2015.01.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 01/20/2015] [Accepted: 01/25/2015] [Indexed: 11/22/2022]
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Manzano M, Cecchini F, Fontanot M, Iacumin L, Comi G, Melpignano P. OLED-based DNA biochip for Campylobacter spp. detection in poultry meat samples. Biosens Bioelectron 2014; 66:271-6. [PMID: 25437363 DOI: 10.1016/j.bios.2014.11.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 11/11/2014] [Accepted: 11/20/2014] [Indexed: 10/24/2022]
Abstract
Integrated biochips are the ideal solution for producing portable diagnostic systems that uncouple diagnosis from centralized laboratories. These portable devices exploit a multi-disciplinary approach, are cost effective and have several advantages including broader accessibility, high sensitivity, quick test results and ease of use. The application of such a device in food safety is considered in this paper. Fluorescence detection of a specific biological probe excited by an optical source is one of the most commonly used methods for quantitative analysis on biochips. In this study, we designed and characterized a miniaturized, highly-sensitive DNA biochip based on a deep-blue organic light-emitting diode. The molecular design of the diode was optimized to excite a fluorophore-conjugated DNA probe and tested using real meat samples to obtain a high sensitivity and specificity against one of the most common poultry meat contaminants: Campylobacter spp. Real samples were analyzed also by classical plate methods and molecular methods to validate the results obtained by the new DNA-biochip. The high sensitivity obtained by the OLED based biochip (0.37ng/μl) and the short time required for the results (about 24h) indicate the usefulness of the system.
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Affiliation(s)
- Marisa Manzano
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy.
| | - Francesca Cecchini
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy
| | - Marco Fontanot
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy
| | - Lucilla Iacumin
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy
| | - Giuseppe Comi
- Department of Food Science, University of Udine, via Sondrio 2/A, 33100 Udine, Italy
| | - Patrizia Melpignano
- Université de Toulouse, UPS, INPT, CNRS-LAPLACE, 118 Route de Narbonne, 31062 Toulouse, Cedex 9, France; OR-EL.doo, Volariceva Ulica 6, 5222 Kobarid, Slovenija
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15
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Wang C, Xiao R, Dong P, Wu X, Rong Z, Xin L, Tang J, Wang S. Ultra-sensitive, high-throughput detection of infectious diarrheal diseases by portable chemiluminescence imaging. Biosens Bioelectron 2014; 57:36-40. [DOI: 10.1016/j.bios.2014.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 01/25/2023]
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16
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Baba MM, Vidergar N, Marcello A. Virological point-of-care testing for the developing world. Future Virol 2014. [DOI: 10.2217/fvl.14.33] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
ABSTRACT: The goal of point-of-care testing is to provide fast, convenient, and easy-to-use diagnostic assays that shorten the turnaround time of intervention. Several diagnostic tests have already migrated from the centralized laboratory to patients’ bedside, physician offices and domestic environments in more developed countries. However, the situation is dramatically different in countries of the developing world where lack of facilities and resources still results in diagnosis to be inferred mostly from the symptoms only. Reliable and rapid diagnosis is urgently needed particularly in case of viral diseases with the concrete risk of outbreaks going undetected in the early stages. In this article we will advocate the necessity to implement robust point-of-care testing for viral diseases to overcome the diagnostic gap of less developed countries.
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Affiliation(s)
- Marycelin M Baba
- Department of Medical Laboratory Science, College of Medical Sciences, University of Maiduguri, P.M.B. 1069, Borno State, Nigeria
| | - Nina Vidergar
- Laboratory of Molecular Virology, International Centre for Genetic Engineering & Biotechnology (ICGEB), Padriciano, 99 - 34149 Trieste, Italy
| | - Alessandro Marcello
- Laboratory of Molecular Virology, International Centre for Genetic Engineering & Biotechnology (ICGEB), Padriciano, 99 - 34149 Trieste, Italy
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Mehrabani S, Maker AJ, Armani AM. Hybrid integrated label-free chemical and biological sensors. SENSORS (BASEL, SWITZERLAND) 2014; 14:5890-928. [PMID: 24675757 PMCID: PMC4029679 DOI: 10.3390/s140405890] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/10/2014] [Accepted: 03/14/2014] [Indexed: 12/13/2022]
Abstract
Label-free sensors based on electrical, mechanical and optical transduction methods have potential applications in numerous areas of society, ranging from healthcare to environmental monitoring. Initial research in the field focused on the development and optimization of various sensor platforms fabricated from a single material system, such as fiber-based optical sensors and silicon nanowire-based electrical sensors. However, more recent research efforts have explored designing sensors fabricated from multiple materials. For example, synthetic materials and/or biomaterials can also be added to the sensor to improve its response toward analytes of interest. By leveraging the properties of the different material systems, these hybrid sensing devices can have significantly improved performance over their single-material counterparts (better sensitivity, specificity, signal to noise, and/or detection limits). This review will briefly discuss some of the methods for creating these multi-material sensor platforms and the advances enabled by this design approach.
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Affiliation(s)
- Simin Mehrabani
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA.
| | - Ashley J Maker
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA.
| | - Andrea M Armani
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA.
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Integration of Organic Light Emitting Diodes and Organic Photodetectors for Lab-on-a-Chip Bio-Detection Systems. ELECTRONICS 2014. [DOI: 10.3390/electronics3010043] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wünscher S, Seise B, Pretzel D, Pollok S, Perelaer J, Weber K, Popp J, Schubert US. Chip-on-foil devices for DNA analysis based on inkjet-printed silver electrodes. LAB ON A CHIP 2014; 14:392-401. [PMID: 24276694 DOI: 10.1039/c3lc50886b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
For a rapid on-site diagnosis of pathogens, low-cost chip-based devices are of great interest. Here, we report the successful fabrication of inkjet printed silver electrodes on polymer foils as disposable chips for molecular DNA analytics. In order to manufacture these electrode structures, silver nanoparticle inks were inkjet printed onto planar polypropylene substrates. Due to the low thermal stability of the foils, substrate preserving sintering techniques, including low temperature thermal sintering and low pressure argon plasma sintering, were implemented. Thus, sufficient electrical conductance of the printed structures at processing temperatures ≤100 °C was achieved. To test the applicability of the manufactured chips, specific capture DNA was immobilized within the gaps of the conductive electrode paths and hybridized in the next step with biotin-labeled target DNA. Subsequently, an enzymatically generated silver nanoparticle deposition was induced that bridges the electrode gap. This enabled both conductance measurement and gray value analysis as a fast, simple and robust electrical and optical read-out system. The proof-of-principle experiments successfully demonstrated the applicability of these convenient chip-on-foil devices for nucleic acid based pathogen detection.
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Affiliation(s)
- Sebastian Wünscher
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
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