201
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Arumugam S, Nayak S, Williams T, di Santa Maria FS, Guedes MS, Chaves RC, Linder V, Marques AR, Horn EJ, Wong SJ, Sia SK, Gomes-Solecki M. A Multiplexed Serologic Test for Diagnosis of Lyme Disease for Point-of-Care Use. J Clin Microbiol 2019; 57:e01142-19. [PMID: 31597750 PMCID: PMC6879297 DOI: 10.1128/jcm.01142-19] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 09/27/2019] [Indexed: 12/24/2022] Open
Abstract
Single multiplexed assays could replace the standard 2-tiered (STT) algorithm recommended for the laboratory diagnosis of Lyme disease if they perform with a specificity and a sensitivity superior or equal to those of the STT algorithm. We used human serum rigorously characterized to be sera from patients with acute- and convalescent-phase early Lyme disease, Lyme arthritis, and posttreatment Lyme disease syndrome, as well as the necessary controls (n = 241 samples), to select the best of 12 Borrelia burgdorferi proteins to improve our microfluidic assay (mChip-Ld). We then evaluated its serodiagnostic performance in comparison to that of a first-tier enzyme immunoassay and the STT algorithm. We observed that more antigens became positive as Lyme disease progressed from early to late stages. We selected three antigens (3Ag) to include in the mChip-Ld: VlsE and a proprietary synthetic 33-mer peptide (PepVF) to capture sensitivity in all disease stages and OspC for early Lyme disease. With the specificity set at 95%, the sensitivity of the mChip-Ld with 3Ag ranged from 80% (95% confidence interval [CI], 56% to 94%) and 85% (95% CI, 74% to 96%) for two panels of serum from patients with early Lyme disease and was 100% (95% CI, 83% to 100%) for serum from patients with Lyme arthritis; the STT algorithm detected early Lyme disease in the same two panels of serum from patients with early Lyme disease with a sensitivity of 48.5% and 75% and Lyme arthritis in serum from patients with Lyme arthritis with a sensitivity of 100%, and the specificity was 97.5% to 100%. The mChip-Ld platform outperformed the STT algorithm according to sensitivity. These results open the door for the development of a single, rapid, multiplexed diagnostic test for point-of-care use that can be designed to identify the Lyme disease stage.
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Affiliation(s)
- Siddarth Arumugam
- Department of Biomedical Engineering, Columbia University, New York, New York, USA
| | - Samiksha Nayak
- Department of Biomedical Engineering, Columbia University, New York, New York, USA
| | | | | | - Mariana Soares Guedes
- Immuno Technologies Inc., Memphis, Tennessee, USA
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | | | | | - Adriana R Marques
- Lyme Disease Studies Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Susan J Wong
- Wadsworth Center, New York State Department of Health, Axelrod Institute, Albany, New York, USA
| | - Samuel K Sia
- Department of Biomedical Engineering, Columbia University, New York, New York, USA
| | - Maria Gomes-Solecki
- Immuno Technologies Inc., Memphis, Tennessee, USA
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA
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202
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Xia L, Yang J, Su R, Zhou W, Zhang Y, Zhong Y, Huang S, Chen Y, Li G. Recent Progress in Fast Sample Preparation Techniques. Anal Chem 2019; 92:34-48. [DOI: 10.1021/acs.analchem.9b04735] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Jiani Yang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Rihui Su
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Wanjun Zhou
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yanshu Zhang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yanhui Zhong
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Simin Huang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yanlong Chen
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
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203
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Adamson H, Ajayi MO, Campbell E, Brachi E, Tiede C, Tang AA, Adams TL, Ford R, Davidson A, Johnson M, McPherson MJ, Tomlinson DC, Jeuken LJC. Affimer-Enzyme-Inhibitor Switch Sensor for Rapid Wash-free Assays of Multimeric Proteins. ACS Sens 2019; 4:3014-3022. [PMID: 31578863 DOI: 10.1021/acssensors.9b01574] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Robust technology is required to underpin rapid point-of-care and in-field diagnostics to improve timely decision making across broad sectors. An attractive strategy combines target recognition and signal generating elements into an "active" enzyme-switch that directly transduces target-binding into a signal. However, approaches that are broadly applicable to diverse targets remain elusive. Here, an enzyme-inhibitor switch sensor was developed by insertion of non-immunoglobulin Affimer binding proteins, between TEM1-β-lactamase and its inhibitor protein, such that target binding disrupts the enzyme-inhibitor complex. Design principles for a successful switch architecture are illustrated by the rapid (min), simple (wash-free), and sensitive (pM) quantification of multimeric target analytes in biological samples (serum, plasma, leaf extracts), across three application areas. A therapeutic antibody (Herceptin), protein biomarker (human C-reactive protein), and plant virus (cow pea mosaic virus) were targeted, demonstrating assays for therapeutic drug monitoring, health diagnostics, and plant pathogen detection, respectively. Batch-to-batch reproducibility, shelf-life stability, and consistency with validated enzyme-linked immunosorbent assay analysis confirm that the principle of an Affimer-enzyme-inhibitor switch provides a platform for point-of-care and in-field diagnostics.
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Affiliation(s)
| | | | | | | | | | | | | | - Robert Ford
- Avacta Life Sciences Limited, Unit 20, Ash Way, Thorp Arch Estate, Wetherby LS23 7FA, U.K
| | - Alex Davidson
- Avacta Life Sciences Limited, Unit 20, Ash Way, Thorp Arch Estate, Wetherby LS23 7FA, U.K
| | - Matt Johnson
- Avacta Life Sciences Limited, Unit 20, Ash Way, Thorp Arch Estate, Wetherby LS23 7FA, U.K
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204
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Kim K, Jo EJ, Lee KJ, Park J, Jung GY, Shin YB, Lee LP, Kim MG. Gold nanocap-supported upconversion nanoparticles for fabrication of a solid-phase aptasensor to detect ochratoxin A. Biosens Bioelectron 2019; 150:111885. [PMID: 31759762 DOI: 10.1016/j.bios.2019.111885] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 12/17/2022]
Abstract
Solid-phase, single-step biosensors are crucial for the development of portable, reusable, and convenient biosensors, otherwise known as point-of-care (POC) testing. Although high-performance single-step biosensors based on the principle of Förster resonance energy transfer (FRET) and using upconversion nanoparticles (UCNPs) functionalized with aptamers have been suggested as easy-to-use platforms, they lack portability and reusability when used for solution-phase biosensing. In this study, we describe a solid-phase, single-step aptasensor that showed higher performance than those of solution-phase aptasensors, as well as promising reusability. The solid-phase, single-step aptasensor was developed based on Au nanocap-supported UCNPs (Au/UCNPs), which were partially embedded in a solid substrate (e.g. polydimethylsiloxane, PDMS). The Au nanocaps allowed the UCNPs to emit upconverted light only from the restricted areas of the UCNPs, i.e., where they were not covered by the nanocaps and PDMS. Functionalization of an aptamer labeled with a quencher on the restricted area enabled the effective quenching of upconverted light from Au/UCNP via FRET after target (ochratoxin A, OTA) detection. The solid-phase, single-step aptasensor showed a linear range of 0.1-1000 ng mL-1 and limit of detection of 0.022 ng mL-1 within 30 min toward OTA. Furthermore, reusability of the solid-phase aptasensor was evaluated for three cycles of detection and regeneration, establishing its apparent reusability via heat treatment. Hence, such solid-phase, single-step aptasensors pave the path to the development of a portable and reusable biosensor platform for POC testing.
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Affiliation(s)
- Kihyeun Kim
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Eun-Jung Jo
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Ki Joong Lee
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jiyoon Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Gun Young Jung
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Yong-Beom Shin
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea; BioNano Health Guard Research Center, 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Luke P Lee
- Department of Bioengineering, Department of Electrical Engineering and Computer Science, and Biophysics Graduate Program, University of California, Berkeley, CA, 94720, United States.
| | - Min-Gon Kim
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
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205
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McLamore ES, Palit Austin Datta S, Morgan V, Cavallaro N, Kiker G, Jenkins DM, Rong Y, Gomes C, Claussen J, Vanegas D, Alocilja EC. SNAPS: Sensor Analytics Point Solutions for Detection and Decision Support Systems. SENSORS 2019; 19:s19224935. [PMID: 31766116 PMCID: PMC6891700 DOI: 10.3390/s19224935] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/23/2019] [Accepted: 10/28/2019] [Indexed: 12/16/2022]
Abstract
In this review, we discuss the role of sensor analytics point solutions (SNAPS), a reduced complexity machine-assisted decision support tool. We summarize the approaches used for mobile phone-based chemical/biological sensors, including general hardware and software requirements for signal transduction and acquisition. We introduce SNAPS, part of a platform approach to converge sensor data and analytics. The platform is designed to consist of a portfolio of modular tools which may lend itself to dynamic composability by enabling context-specific selection of relevant units, resulting in case-based working modules. SNAPS is an element of this platform where data analytics, statistical characterization and algorithms may be delivered to the data either via embedded systems in devices, or sourced, in near real-time, from mist, fog or cloud computing resources. Convergence of the physical systems with the cyber components paves the path for SNAPS to progress to higher levels of artificial reasoning tools (ART) and emerge as data-informed decision support, as a service for general societal needs. Proof of concept examples of SNAPS are demonstrated both for quantitative data and qualitative data, each operated using a mobile device (smartphone or tablet) for data acquisition and analytics. We discuss the challenges and opportunities for SNAPS, centered around the value to users/stakeholders and the key performance indicators users may find helpful, for these types of machine-assisted tools.
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Affiliation(s)
- Eric S. McLamore
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
- Correspondence: ; Tel.: +1-(352)294-6703
| | - Shoumen Palit Austin Datta
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
- MIT Auto-ID Labs, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- MDPnP Labs, Biomedical Engineering Program, Department of Anesthesiology, Massachusetts General Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA 02139, USA
| | - Victoria Morgan
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
| | - Nicholas Cavallaro
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
| | - Greg Kiker
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
| | - Daniel M. Jenkins
- Molecular Biosciences and Bioengineering, University of Hawaii Manoa, Honolulu, HI 96822, USA;
| | - Yue Rong
- Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA or (V.M.); (N.C.); (G.K.); (Y.R.)
| | - Carmen Gomes
- Mechanical Engineering, Iowa State University, Ames, IA 50011, USA;
| | - Jonathan Claussen
- Mechanical Engineering Department, Iowa State University, Ames, IA 50011, USA;
- Ames Laboratory, Ames, IA 50011, USA
| | - Diana Vanegas
- Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC 29634, USA;
| | - Evangelyn C. Alocilja
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lansing, MI 48824, USA;
- Nano-Biosensors Lab, Michigan State University, East Lansing, MI 48824, USA
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206
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Malekjahani A, Sindhwani S, Syed AM, Chan WCW. Engineering Steps for Mobile Point-of-Care Diagnostic Devices. Acc Chem Res 2019; 52:2406-2414. [PMID: 31430118 DOI: 10.1021/acs.accounts.9b00200] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mobile phone technology is a perfect companion for point-of-care diagnostics as they come equipped with advanced processors, high resolution cameras, and network connectivity. Despite several academic pursuits, only a few mobile phone diagnostics have been tested in the field, commercialized or achieved regulatory approval. This review will address the challenges associated with developing mobile diagnostics and suggest strategies to overcome them. We aim to provide a resource for researchers to accelerate the development of new diagnostics. Our Account includes an overview of published mobile phone diagnostics and highlights lessons learned from their approach to diagnostic development. Also, we have included recommendations from regulatory and public health agencies, such as the U.S. Food and Drug Administration and World Health Organization, to further guide researchers. We believe that the development of mobile phone point-of-care diagnostics takes place in four distinct steps: (1) Needs and Value Assessment, (2) Technology Development, (3) Preclinical Verification, and (4) Clinical Validation and Field Trials. During each step, we outline developmental strategies to help researchers avoid potential challenges. (1) Researchers commonly develop devices to maximize technical parameters such as sensitivity and time which do not necessarily translate to increased clinical impact. Researchers must focus on assessing specific diagnostic needs and the value which a potential device would offer. (2) Often, researchers claim they have developed devices for feasible implementation at the point-of-care, yet they rely on laboratory resources. Researchers must develop equipment-free devices which are agnostic to any mobile phone. (3) Another challenge researchers face is decreased performance during field evaluations relative to initial laboratory verification. Researchers must ensure that they simulate the field conditions during laboratory verification to achieve successful translation. (4) Finally, proper field testing of devices must be performed in conditions which match that of the final intended use. The future of mobile phone point-of-care diagnostic devices is bright and has the potential to radically change how patients are diagnosed. Before we reach this point, researchers must take a step backward and focus on the first-principles of basic research. The widespread adoption and rapid scaling of these devices can only be achieved once the fundamentals have been considered. The insights and strategies provided here will help researchers avoid pitfalls, streamline development and make better decisions during the development of new diagnostics. Further, we believe this Account can help push the field of mobile diagnostics toward increased productivity, leading to more approved devices and ultimately helping curb the burden of disease worldwide.
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Affiliation(s)
- Ayden Malekjahani
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, 164 College St, Toronto, ON M5S 3G9, Canada
| | - Shrey Sindhwani
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, 164 College St, Toronto, ON M5S 3G9, Canada
| | - Abdullah Muhammad Syed
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, 164 College St, Toronto, ON M5S 3G9, Canada
| | - Warren C. W. Chan
- Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto, 164 College St, Toronto, ON M5S 3G9, Canada
- Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St, Toronto, ON M5S 3E5, Canada
- Department of Chemistry, University of Toronto, 80 St. George, Toronto, ON M5S 3H6, Canada
- Faculty of Applied Science and Engineering, University of Toronto, Toronto, ON M5S 1A4, Canada
- Donnelly Center for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
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207
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Fantino E, Chiadò A, Quaglio M, Vaghi V, Cocuzza M, Marasso SL, Potrich C, Lunelli L, Pederzolli C, Pirri CF, Bongiovanni R, Vitale A. Photofabrication of polymeric biomicrofluidics: New insights into material selection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 106:110166. [PMID: 31753377 DOI: 10.1016/j.msec.2019.110166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/17/2019] [Accepted: 09/05/2019] [Indexed: 01/09/2023]
Abstract
We propose a versatile method to evaluate the suitability of polymers for the fabrication of microfluidic devices for biomedical applications, based on the concept that the selection and the design of convenient materials should involve different properties depending on the final microfluidic application. Here polymerase chain reaction (PCR) is selected as biological model and target microfluidic reaction. A class of photocured siloxanes is introduced as device building polymers and copolymerization is adopted as strategy to finely tune and optimize the final material properties. All-polymeric flexible devices are easily fabricated exploiting the rapidity of the photopolymerization reaction: they resist to thermal cycles without leakage or de-bonding (i.e., without separation of different chip parts made of the same material bonded together), show very limited water swelling and permeability, are bioinert and prevent the inhibition of the biochemical reaction. PCR is thus successfully conducted in the photocured microfluidic devices made with a specifically designed siloxane copolymer.
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Affiliation(s)
- Erika Fantino
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy
| | - Marzia Quaglio
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Valentina Vaghi
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy
| | - Matteo Cocuzza
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; CNR-IMEM, Parco Area delle Scienze 37a, 43124 Parma, Italy
| | - Simone L Marasso
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; CNR-IMEM, Parco Area delle Scienze 37a, 43124 Parma, Italy
| | - Cristina Potrich
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, 38123 Povo, Trento, Italy
| | - Lorenzo Lunelli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, 38123 Povo, Trento, Italy
| | - Cecilia Pederzolli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy
| | - Candido F Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy
| | - Roberta Bongiovanni
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; INSTM - Politecnico di Torino Research Unit, Via Giusti 9, 50121 Firenze, Italy
| | - Alessandra Vitale
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; INSTM - Politecnico di Torino Research Unit, Via Giusti 9, 50121 Firenze, Italy.
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208
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Strangman GE, Sawyer A, Fabre KM, Urquieta E, Hury J, Wu J, Peterman A, Hoffman J, Donoviel D. Deep-space applications for point-of-care technologies. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019. [DOI: 10.1016/j.cobme.2019.08.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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209
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Xu K, Zhou R, Takei K, Hong M. Toward Flexible Surface-Enhanced Raman Scattering (SERS) Sensors for Point-of-Care Diagnostics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900925. [PMID: 31453071 PMCID: PMC6702763 DOI: 10.1002/advs.201900925] [Citation(s) in RCA: 227] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 05/26/2019] [Indexed: 05/18/2023]
Abstract
Surface-enhanced Raman scattering (SERS) spectroscopy provides a noninvasive and highly sensitive route for fingerprint and label-free detection of a wide range of molecules. Recently, flexible SERS has attracted increasingly tremendous research interest due to its unique advantages compared to rigid substrate-based SERS. Here, the latest advances in flexible substrate-based SERS diagnostic devices are investigated in-depth. First, the intriguing prospect of point-of-care diagnostics is briefly described, followed by an introduction to the cutting-edge SERS technique. Then, the focus is moved from conventional rigid substrate-based SERS to the emerging flexible SERS technique. The main part of this report highlights the recent three categories of flexible SERS substrates, including actively tunable SERS, swab-sampling strategy, and the in situ SERS detection approach. Furthermore, other promising means of flexible SERS are also introduced. The flexible SERS substrates with low-cost, batch-fabrication, and easy-to-operate characteristics can be integrated into portable Raman spectroscopes for point-of-care diagnostics, which are conceivable to penetrate global markets and households as next-generation wearable sensors in the near future.
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Affiliation(s)
- Kaichen Xu
- Department of Electrical and Computer EngineeringNational University of Singapore4 Engineering Drive 3Singapore117576Singapore
- Department of Physics and ElectronicsOsaka Prefecture University SakaiOsaka599‐8531Japan
| | - Rui Zhou
- School of Aerospace EngineeringXiamen University422 Siming South Road, Siming DistrictXiamenFujian361005P. R. China
| | - Kuniharu Takei
- Department of Physics and ElectronicsOsaka Prefecture University SakaiOsaka599‐8531Japan
| | - Minghui Hong
- Department of Electrical and Computer EngineeringNational University of Singapore4 Engineering Drive 3Singapore117576Singapore
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210
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Gowers SAN, Rogers ML, Booth MA, Leong CL, Samper IC, Phairatana T, Jewell SL, Pahl C, Strong AJ, Boutelle MG. Clinical translation of microfluidic sensor devices: focus on calibration and analytical robustness. LAB ON A CHIP 2019; 19:2537-2548. [PMID: 31290529 PMCID: PMC7321805 DOI: 10.1039/c9lc00400a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We present approaches to facilitate the use of microfluidics outside of the laboratory, in our case within a clinical setting and monitoring from human subjects, where the complexity of microfluidic devices requires high skill and expertise and would otherwise limit translation. Microfluidic devices show great potential for converting complex laboratory protocols into on-chip processes. We demonstrate a flexible microfluidic platform can be coupled to microfluidic biosensors and used in conjunction with clinical microdialysis. The versatility is demonstrated through a series of examples of increasing complexity including analytical processes relevant to a clinical environment such as automatic calibration, standard addition, and more general processes including system optimisation, reagent addition and homogenous enzyme reactions. The precision and control offered by this set-up enables the use of microfluidics by non-experts in clinical settings, increasing uptake and usage in real-world scenarios. We demonstrate how this type of system is helpful in guiding physicians in real-time clinical decision-making.
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Affiliation(s)
| | | | | | - Chi L Leong
- Department of Bioengineering, Imperial College London, UK.
| | | | - Tonghathai Phairatana
- Department of Bioengineering, Imperial College London, UK. and Institute of Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | | | - Clemens Pahl
- Department of Basic and Clinical Neuroscience, Kings College London, UK
| | - Anthony J Strong
- Department of Basic and Clinical Neuroscience, Kings College London, UK
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211
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Yagati AK, Go A, Chavan SG, Baek C, Lee MH, Min J. Nanostructured Au-Pt hybrid disk electrodes for enhanced parathyroid hormone detection in human serum. Bioelectrochemistry 2019; 128:165-174. [DOI: 10.1016/j.bioelechem.2019.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 12/22/2022]
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212
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Sierra T, Crevillen AG, Escarpa A. Determination of Glycoproteins by Microchip Electrophoresis Using Os(VI)-Based Selective Electrochemical Tag. Anal Chem 2019; 91:10245-10250. [DOI: 10.1021/acs.analchem.9b02375] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tania Sierra
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Alcala de Henares, Madrid E-28871, Spain
| | - Agustín G. Crevillen
- Department of Analytical Sciences, Faculty of Sciences, Universidad Nacional de Educación a Distancia (UNED), Madrid E-28040, Spain
| | - Alberto Escarpa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, University of Alcalá, Alcala de Henares, Madrid E-28871, Spain
- Chemical Research Institute “Andrés M. del Río” (IQAR), University of Alcalá, Alcalá de Henares, Madrid E-28805, Spain
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213
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Márquez A, Aymerich J, Dei M, Rodríguez-Rodríguez R, Vázquez-Carrera M, Pizarro-Delgado J, Giménez-Gómez P, Merlos Á, Terés L, Serra-Graells F, Jiménez-Jorquera C, Domínguez C, Muñoz-Berbel X. Reconfigurable multiplexed point of Care System for monitoring type 1 diabetes patients. Biosens Bioelectron 2019; 136:38-46. [DOI: 10.1016/j.bios.2019.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/02/2019] [Accepted: 04/07/2019] [Indexed: 01/15/2023]
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214
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Chauhan V, Singh S, Galwankar S, Aggarwal P, Bhoi S, Di Somma S, Peacock WF, Paladino L. Establishing national centre for point-of-care technology for 'Swasth Bharat, Samridh Bharat'. J Lab Physicians 2019; 11:177-179. [PMID: 31579259 PMCID: PMC6771327 DOI: 10.4103/jlp.jlp_139_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Vivek Chauhan
- Department of Medicine, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India
- Address for correspondence: Dr. Vivek Chauhan, Department of Medicine, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India. E-mail:
| | - Sarman Singh
- Department of Laboratory Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Sagar Galwankar
- Department of Emergency Medicine, Sarasota Memorial Hospital, Sarasota, Florida, USA
| | - Praveen Aggarwal
- Department of Emergency Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sanjeev Bhoi
- Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Salvatore Di Somma
- Department of Emergency Medicine, Sant'Andrea Hospital, University La Sapienza Rome, Rome, Italy
| | - W. Frank Peacock
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Lorenzo Paladino
- SUNY Downstate/Kings County Hospital Medical Centre, New York City, New York, USA
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215
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Morgan TJ, Anstey CM. Expanding the boundaries of point of care testing. J Clin Monit Comput 2019; 34:397-399. [PMID: 31254240 DOI: 10.1007/s10877-019-00344-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 06/26/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas J Morgan
- Intensive Care Unit, Mater Research - University of Queensland, Mater Health Services, Stanley Street, South Brisbane, QLD, 4101, Australia.
| | - Christopher M Anstey
- Department of Intensive Care, Sunshine Coast Hospital, Nambour, QLD, 4560, Australia.,The University of Queensland, Brisbane, QLD, 4101, Australia
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216
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Nayak S, Guo T, Lopez-Rios J, Lentz C, Arumugam S, Hughes J, Dolezal C, Linder V, Carballo-Diéguez A, Balán IC, Sia SK. Integrating user behavior with engineering design of point-of-care diagnostic devices: theoretical framework and empirical findings. LAB ON A CHIP 2019; 19:2241-2255. [PMID: 31168548 PMCID: PMC6592761 DOI: 10.1039/c9lc00188c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
With point-of-care (POC) diagnostic devices becoming increasingly available to untrained users, it will be critical to understand how real-world user behavior can best inform and guide the engineering design process. Social sciences present frameworks for analyzing user behavior, but they have not yet been applied to POC diagnostics in a methodical manner. Here, we develop a framework that synthesizes two models that can collectively account for user behavior and experience with POC diagnostic devices: a social psychological information-motivation-behavior (IMB) model (first described by Fisher and Fisher) for identifying determinants for health-related behavior, and user experience (UX) elements for studying interactions between users and products. Based on studies of 40 naïve users of our smartphone-enabled microfluidics device that can be used for HIV home-testing, we found that untrained participants could perform 90% of steps correctly, with engineering design elements that provided feedback that was either direct (e.g., a light or click) or binary (e.g., a switch) enhancing usability. Interestingly, of the steps performed incorrectly, over 70% were due not to errors in the device or user operation, but user-to-user variability (e.g. time in collecting fingerstick and force applied to initiate vacuum), which could be addressed by further modifications to the device. Overall, this study suggests that microfluidic POC HIV home-testing is likely to benefit from smartphone integration, and that engineering design of POC diagnostic devices can benefit from a structured evaluation of user behavior and experience, as guided by a social-psychological framework, which emphasizes user credibility, accessibility, acceptability, usability, and value.
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Affiliation(s)
- Samiksha Nayak
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, NY 10027, USA
| | - Tiffany Guo
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, NY 10027, USA
| | - Javier Lopez-Rios
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Cody Lentz
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Siddarth Arumugam
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, NY 10027, USA
| | - Joshua Hughes
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, NY 10027, USA
| | - Curtis Dolezal
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Vincent Linder
- OPKO Diagnostics, LLC, 4 Constitution Way, Suite E, Woburn, MA, USA
| | - Alex Carballo-Diéguez
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Iván C. Balán
- HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, NY, USA
| | - Samuel K. Sia
- Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, NY 10027, USA
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217
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Wilson SR. Theranos: What did analytical chemists have to say about the hype? J Sep Sci 2019; 42:1960-1961. [DOI: 10.1002/jssc.201900431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 04/30/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Steven Ray Wilson
- Department of ChemistryUniversity of Oslo Oslo Norway
- Hybrid Technology Hub‐Centre of ExcellenceInstitute of Basic Medical SciencesFaculty of MedicineUniversity of Oslo Oslo Norway
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218
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Ma X, Qi L, Gao W, Yuan F, Xia Y, Lou B, Xu G. A portable wireless single-electrode system for electrochemiluminescent analysis. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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219
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Park HJ, Cho H, Jung HS, Cho BH, Lee MY. Development of a DNA isolation device using poly(3,4-dihydroxy-L-phenylalanine)-coated swab for on-site molecular diagnostics. Sci Rep 2019; 9:8144. [PMID: 31148558 PMCID: PMC6544620 DOI: 10.1038/s41598-019-44527-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 05/15/2019] [Indexed: 12/19/2022] Open
Abstract
For on-site molecular diagnostics, a pre-treatment step for isolation of nucleic acid from clinical samples on site is desired. However, conventional commercialized silica-based nucleic acid isolation kits require repetitive pipetting and a centrifugation or permanent magnet for buffer exchange. In this study, we developed a poly(3,4-dihydroxy-L-phenylalanine) (L-DOPA)-coated swab that can absorb and desorb DNA depending on pH of buffers and a portable integrated DNA isolation device that comprises integrated chambers containing DNA isolation buffers. The poly(L-DOPA)-coated swab interacts with each buffer by passing through the membrane between the integrated chambers. Our device involves a simple operation and does not require any large equipment or skilled experts. By connecting the device with an automated polymerase chain reaction system, an isothermal amplification system, or a non-amplified DNA detection method, on-site molecular diagnosis of various diseases can be quickly realized.
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Affiliation(s)
- Hyun-Ju Park
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, 06351, Korea
| | - Heesoo Cho
- Smart Healthcare Research Institute, Biomedical Engineering Research Center, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul, 06351, Korea
| | - Ho Sang Jung
- Advanced Nano-Surface Department, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam, 51508, Republic of Korea
| | - Baek Hwan Cho
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, 06351, Korea. .,Smart Healthcare Research Institute, Biomedical Engineering Research Center, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.
| | - Min-Young Lee
- Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, 06351, Korea. .,Smart Healthcare Research Institute, Biomedical Engineering Research Center, Samsung Medical Center, 81, Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.
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220
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Lenzi E, Jimenez de Aberasturi D, Liz-Marzán LM. Surface-Enhanced Raman Scattering Tags for Three-Dimensional Bioimaging and Biomarker Detection. ACS Sens 2019; 4:1126-1137. [PMID: 31046243 DOI: 10.1021/acssensors.9b00321] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We have recently witnessed a major improvement in the quality of nanoparticles encoded with Raman-active molecules (SERS tags). Such progress relied mainly on a major improvement of fabrication methods for building-blocks, resulting in widespread application of this powerful tool in various fields, with the potential to replace commonly used techniques, such as those based on fluorescence. We present hereby a brief Perspective on surface enhanced Raman scattering (SERS) tags, regarding their composition, morphology, and structure, and describe our own selection from the current state-of-the-art. We then focus on the main bioimaging applications of SERS tags, showing a gradual evolution from two-dimensional studies to three-dimensional analysis. Recent improvements in sensitivity and multiplexing ability have enabled great advancements toward in vivo applications, e.g., highlighting tumor boundaries to guide surgery. In addition, the high level of biomolecule sensitivity reached by SERS tags promises an expansion toward biomarker detection in cases for which traditional methods offer limited reliability, as a consequence of the frequently low analyte concentrations.
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Affiliation(s)
- Elisa Lenzi
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
| | | | - Luis M. Liz-Marzán
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
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221
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Leclerc LMY, Soffer G, Kwan DH, Shih SCC. A fucosyltransferase inhibition assay using image-analysis and digital microfluidics. BIOMICROFLUIDICS 2019; 13:034106. [PMID: 31123538 PMCID: PMC6510662 DOI: 10.1063/1.5088517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/29/2019] [Indexed: 05/08/2023]
Abstract
Sialyl-LewisX and LewisX are cell-surface glycans that influence cell-cell adhesion behaviors. These glycans are assembled by α(1,3)-fucosyltransferase enzymes. Their increased expression plays a role in inflammatory disease, viral and microbial infections, and cancer. Efficient screens for specific glycan modifications such as those catalyzed by fucosyltransferases are tended toward costly materials and large instrumentation. We demonstrate for the first time a fucosylation inhibition assay on a digital microfluidic system with the integration of image-based techniques. Specifically, we report a novel lab-on-a-chip approach to perform a fluorescence-based inhibition assay for the fucosylation of a labeled synthetic disaccharide, 4-methylumbelliferyl β-N-acetyllactosaminide. As a proof-of-concept, guanosine 5'-diphosphate has been used to inhibit Helicobacter pylori α(1,3)-fucosyltransferase. An electrode shape (termed "skewed wave") is designed to minimize electrode density and improve droplet movement compared to conventional square-based electrodes. The device is used to generate a 10 000-fold serial dilution of the inhibitor and to perform fucosylation reactions in aqueous droplets surrounded by an oil shell. Using an image-based method of calculating dilutions, referred to as "pixel count," inhibition curves along with IC50 values are obtained on-device. We propose the combination of integrating image analysis and digital microfluidics is suitable for automating a wide range of enzymatic assays.
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Affiliation(s)
| | | | | | - Steve C. C. Shih
- Author to whom correspondence should be addressed:. Tel.: +1-(514)-848-2424x7579
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222
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Yang J, Wang K, Xu H, Yan W, Jin Q, Cui D. Detection platforms for point-of-care testing based on colorimetric, luminescent and magnetic assays: A review. Talanta 2019; 202:96-110. [PMID: 31171232 DOI: 10.1016/j.talanta.2019.04.054] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/03/2019] [Accepted: 04/20/2019] [Indexed: 12/14/2022]
Abstract
Along with the considerable potential and increasing demand of the point-of-care testing (POCT), corresponding detection platforms have attracted great interest in both academic and practical fields. The first few generations of conventional detection devices tend to be costly, complicated to operate and hard to move on account of early limitations in the level of technological development and relatively high requirement of performance. Owing to the requirements for rapidity, simplicity, accuracy and cost controlling in the POCT, reader systems are urgently needed to be developed, upgraded and modified constantly, realizing on-site testing and healthcare management without a specific place or cumbersome operation. Accordingly, numerous rapid detection platforms with diverse size and performance have emerged such as bench-top apparatuses, handheld devices and intelligent detection devices. This review discusses various devices developed mainly for the detection of lateral flow test strips (LFTSs) or microfluidic strips in the POCT and summarizes these devices by size and portability. Furthermore, on the basis of various detection methods and diverse probes usually containing specific nanoparticles composites, three most common aspects of detection rationale in the POCT are selected to elaborate each kind of detection platforms in this paper: colorimetric assay, luminescent detection and magnetic signal detection. Herein, we focus on their structures, detection mechanisms and assay results, accompany with discussions and comments on the performances, costs and potential application, as well as advantages and limitations of each technique. In addition, perspectives on the future advances of detection platforms and some conclusions are proposed.
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Affiliation(s)
- Jinchuan Yang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai, 200240, PR China.
| | - Kan Wang
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai, 200240, PR China.
| | - Hao Xu
- School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
| | - Wenqiang Yan
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai, 200240, PR China.
| | - Qinghui Jin
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, PR China; Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, 315211, PR China.
| | - Daxiang Cui
- Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai Engineering Research Center for Intelligent diagnosis and treatment instrument, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai, 200240, PR China.
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223
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Safenkova IV, Panferov VG, Panferova NA, Varitsev YA, Zherdev AV, Dzantiev BB. Alarm lateral flow immunoassay for detection of the total infection caused by the five viruses. Talanta 2019; 195:739-744. [DOI: 10.1016/j.talanta.2018.12.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 12/02/2018] [Accepted: 12/03/2018] [Indexed: 10/27/2022]
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224
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Aquino-Jarquin G. CRISPR-Cas14 is now part of the artillery for gene editing and molecular diagnostic. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 18:428-431. [PMID: 30935995 DOI: 10.1016/j.nano.2019.03.006] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 03/11/2019] [Accepted: 03/13/2019] [Indexed: 02/08/2023]
Abstract
Recently Jennifer Doudna's group discovered the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR associated protein 14 (Cas14), identified almost exclusively in a superphylum of extremophile archaea. The newly discovered Cas14 possesses a single-stranded (ss)DNA targeting activity - despite being two times smaller than Cas9 - a capability that might confer a defense against viruses with ssDNA genomes. Furthermore, by combining the non-specific ssDNase cleavage activity of Cas14 with isothermal amplification method (DETECTR-Cas14), it can also be promisingly exploited for high-fidelity DNA single-nucleotide polymorphism genotyping, and potentially for detecting ssDNA viruses of undeniable clinical, ecological, and economic importance infecting hosts in all three domains of life. Thus, CRISPR-Cas14 might acquire an exponential expansion in the field of CRISPR diagnostic for infectious and noninfectious diseases.
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Affiliation(s)
- Guillermo Aquino-Jarquin
- Laboratorio de Investigación en Genómica, Genética y Bioinformática. Torre de Hemato-Oncología, 4to Piso, Sección 2. Hospital Infantil de México, Federico Gómez.
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225
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Xiang N, Zhang R, Han Y, Ni Z. A Multilayer Polymer-Film Inertial Microfluidic Device for High-Throughput Cell Concentration. Anal Chem 2019; 91:5461-5468. [DOI: 10.1021/acs.analchem.9b01116] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nan Xiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, People’s Republic of China
| | - Rui Zhang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, People’s Republic of China
| | - Yu Han
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, People’s Republic of China
| | - Zhonghua Ni
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, People’s Republic of China
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226
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Nanthasurasak P, See HH, Zhang M, Guijt RM, Breadmore MC. In‐Transit Electroextraction of Small‐Molecule Pharmaceuticals from Blood. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pavisara Nanthasurasak
- Australian Centre for Research on Separation Science (ACROSS)School of Physical SciencesUniversity of Tasmania Hobart 7005 Australia
| | - Hong Heng See
- Centre for Sustainable Nanomaterials, Ibnu SinaInstitute for Scientific and Industrial ResearchUniversiti Teknologi Malaysia Johor Bahru, Johor 81310 Malaysia
| | - Min Zhang
- School of Life and Environmental SciencesGuilin University of Electronic Technology Guilin Guangxi 541004 China
| | - Rosanne M. Guijt
- Deakin UniversityCentre for Rural and Regional Futures, Geelong Private Bag 20000 3220 Geelong Australia
| | - Michael C. Breadmore
- Australian Centre for Research on Separation Science (ACROSS)School of Physical SciencesUniversity of Tasmania Hobart 7005 Australia
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227
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You PY, Li FC, Liu MH, Chan YH. Colorimetric and Fluorescent Dual-Mode Immunoassay Based on Plasmon-Enhanced Fluorescence of Polymer Dots for Detection of PSA in Whole Blood. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9841-9849. [PMID: 30784256 DOI: 10.1021/acsami.9b00204] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although enormous efforts have been devoted to the development of new types of fluorometric immunochromatographic test strip (ICTS) with improved sensitivity over the past years, it still remains a big challenge to design ICTS with colorimetric and fluorescent bimodal signal readout for rapid yet accurate detection of cancer markers in a clinic. Scientists have tried to prepare bimodal reporters by combining fluorescent dyes with metal nanomaterials, but their fluorescence was easily quenched by metal nanomaterials through surface energy transfer, making dual colorimetric and fluorometric ICTS very difficult to be achieved. As compared to conventional fluorescent probes, semiconducting polymer dots (Pdots) exhibit extraordinary fluorescence brightness and facile surface functionalization, which are very suitable to be engineered as bimodal signal reporting reagents. Here, we integrated highly fluorescent Pdots with strongly plasmonic Au nanorods to form Pdot-Au hybrid nanocomposites with dual colorimetric and fluorescent readout abilities. We further utilized these nanohybrids in ICTS for qualitatively fast screening (colorimetry) as well as quantitatively accurate determination (fluorometry) of prostate-specific antigen (PSA) within 10 min. By taking advantage of the plasmon-enhanced fluorescence of Pdots on Au nanorods, this immunoassay possesses much better detection sensitivity of 1.07 pg/mL for PSA, which is at least 2 orders of magnitude lower than that of conventional fluorometric ICTS. Moreover, the direct detection of PSA from human whole blood collected without sample pretreatment makes this Pdot-based ICTS platform promising for on-site point-of-care diagnostics.
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Affiliation(s)
- Pei-Yun You
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Fang-Chu Li
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Ming-Ho Liu
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Yang-Hsiang Chan
- Department of Applied Chemistry , National Chiao Tung University , Hsinchu 30050 , Taiwan
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 30050 , Taiwan
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228
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Thermopneumatic suction integrated microfluidic blood analysis system. PLoS One 2019; 14:e0208676. [PMID: 30845239 PMCID: PMC6405101 DOI: 10.1371/journal.pone.0208676] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/13/2019] [Indexed: 01/21/2023] Open
Abstract
Blood tests provide crucial diagnostic information regarding several diseases. A key factor that affects the precision and accuracy of blood tests is the interference of red blood cells; however, the conventional methods of blood separation are often complicated and time consuming. In this study, we devised a simple but high-efficiency blood separation system on a self-strained microfluidic device that separates 99.7 ± 0.3% of the plasma in only 6 min. Parameters, such as flow rate, design of the filter trench, and the relative positions of the filter trench and channel, were optimized through microscopic monitoring. Moreover, this air-difference-driven device uses a cost-effective and easy-to-use heater device that creates a low-pressure environment in the microchannel within minutes. With the aforementioned advantages, this blood separation device could be another platform choice for point-of-care testing.
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229
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Taking connected mobile-health diagnostics of infectious diseases to the field. Nature 2019; 566:467-474. [PMID: 30814711 DOI: 10.1038/s41586-019-0956-2] [Citation(s) in RCA: 172] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 08/08/2018] [Indexed: 11/08/2022]
Abstract
Mobile health, or 'mHealth', is the application of mobile devices, their components and related technologies to healthcare. It is already improving patients' access to treatment and advice. Now, in combination with internet-connected diagnostic devices, it offers novel ways to diagnose, track and control infectious diseases and to improve the efficiency of the health system. Here we examine the promise of these technologies and discuss the challenges in realizing their potential to increase patients' access to testing, aid in their treatment and improve the capability of public health authorities to monitor outbreaks, implement response strategies and assess the impact of interventions across the world.
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230
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Anderson CE, Buser JR, Fleming AM, Strauch EM, Ladd PD, Englund J, Baker D, Yager P. An integrated device for the rapid and sensitive detection of the influenza hemagglutinin. LAB ON A CHIP 2019; 19:885-896. [PMID: 30724293 PMCID: PMC6425938 DOI: 10.1039/c8lc00691a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Influenza is a viral respiratory tract infection responsible for up to 5 million cases of severe infection and nearly 600 000 deaths worldwide each year. While treatments for influenza exist, diagnostics for the virus at the point of care are limited in their sensitivity and ability to differentiate between subtypes. We have developed an integrated two-dimensional paper network (2DPN) for the detection of the influenza virus by the surface glycoprotein, hemagglutinin. The hemagglutinin assay was developed using proteins computationally designed to bind with high affinity to the highly-conserved sialic acid binding site. The integrated 2DPN uses a novel geometry that allows automated introduction of an enzymatic amplification reagent directly to the detection zone. This assay was integrated into a prototype device and demonstrated successful detection of clinically relevant virus concentrations spiked into 70 μL of virus-free pediatric nasal swab samples. Using this novel geometry, we found improved assay performance on the device (compared to a manually-operated dipstick method), with a sensitivity of 4.45 × 102 TCID50 per mL on device.
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Affiliation(s)
- Caitlin E Anderson
- Department of Bioengineering, University of Washington, Seattle, WA, USA.
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231
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Idili A, Gerson J, Parolo C, Kippin T, Plaxco KW. An electrochemical aptamer-based sensor for the rapid and convenient measurement of L-tryptophan. Anal Bioanal Chem 2019; 411:4629-4635. [PMID: 30796485 DOI: 10.1007/s00216-019-01645-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/09/2019] [Accepted: 01/24/2019] [Indexed: 01/01/2023]
Abstract
The field of precision medicine-the possibility to accurately tailor pharmacological treatments to each specific patient-would be significantly advanced by the ability to rapidly, conveniently, and cost-effectively measure biomarkers directly at the point of care. Electrochemical aptamer-based (E-AB) sensors appear a promising approach to this end due to their low cost, ease of use, and good analytical performance in complex clinical samples. Thus motivated, we present here the development of an E-AB sensor for the measurement of the amino acid L-tryptophan, a diagnostic marker indicative of a number of metabolic and mental health disorders, in urine. The sensor employs a previously reported DNA aptamer able to recognize the complex formed between tryptophan and a rhodium-based receptor. We adopted the aptamer to the E-AB sensing platform by truncating it, causing it to undergo a binding-induced conformational change, modifying it with a redox-reporting methylene blue, and attaching it to an interrogating electrode. The resulting sensor is able to measure tryptophan concentrations in the micromolar range in minutes and readily discriminates between its target and other aromatic and non-aromatic amino acids. Using it, we demonstrate the measurement of clinically relevant tryptophan levels in synthetic urine in a process requiring only a single dilution step. The speed and convenience with which this is achieved suggest that the E-AB platform could significantly improve the ease and frequency with which metabolic diseases are monitored. Graphical Abstract.
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Affiliation(s)
- Andrea Idili
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.,Center for Bioengineering, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Julian Gerson
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Claudio Parolo
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.,Center for Bioengineering, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Tod Kippin
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.,Department of Molecular Cellular and Developmental Biology, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.,Department of Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Kevin W Plaxco
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA. .,Center for Bioengineering, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.
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232
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Nanthasurasak P, See HH, Zhang M, Guijt RM, Breadmore MC. In-Transit Electroextraction of Small-Molecule Pharmaceuticals from Blood. Angew Chem Int Ed Engl 2019; 58:3790-3794. [PMID: 30614157 DOI: 10.1002/anie.201812077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Indexed: 11/09/2022]
Abstract
An electrokinetic platform was developed for extracting small-molecule pharmaceuticals from a dried blood spot. Through the exclusion of liquid reagents and use of low field strength (6 V cm-1 ), the electroextraction of a drug from a dried blood spot, deposited on a polymer inclusion membrane (PIM), could be realised while in transit in the mail. In transit sample preparation provides a potential solution to in situ sample degradation and may accelerate the workflow upon arrival of a patient sample at the analytical facility. The electroextraction method was enabled through our discovery of the use of 15-20 μm thin PIMs as electrophoretic separation medium in absence of liquid reagents. Here, a PIM consisting of cellulose triacetate as polymer base, 2-nitrophenyl octyl ether as plasticizer and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide as carrier was used. The PIM, was packaged with two 12 V batteries to supply the separation voltage. A blood spot containing berberine chloride was deposited and dried before the applying the separation potential, allowing for the electroextraction while the packaged device was shipped in internal mail. Upon arrival in the analytical laboratory, the PIM was analysed using a fluorescence microscope with photon multiplier tube, quantifying the berberine extracted away from the sample matrix. This platform represents a new opportunity for processing clinical samples during transport to the laboratory, saving time and manual handling to accelerate the time to result.
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Affiliation(s)
- Pavisara Nanthasurasak
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences, University of Tasmania, Hobart, 7005, Australia
| | - Hong Heng See
- Centre for Sustainable Nanomaterials, Ibnu Sina, Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia
| | - Min Zhang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China
| | - Rosanne M Guijt
- Deakin University, Centre for Rural and Regional Futures, Geelong, Private Bag 20000, 3220, Geelong, Australia
| | - Michael C Breadmore
- Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences, University of Tasmania, Hobart, 7005, Australia
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233
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Markovic T, Bao J, Maenhout G, Ocket I, Nauwelaers B. An Interdigital Capacitor for Microwave Heating at 25 GHz and Wideband Dielectric Sensing of nL Volumes in Continuous Microfluidics. SENSORS (BASEL, SWITZERLAND) 2019; 19:E715. [PMID: 30744177 PMCID: PMC6387245 DOI: 10.3390/s19030715] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/24/2019] [Accepted: 02/07/2019] [Indexed: 12/15/2022]
Abstract
This paper proposes a miniature microwave-microfluidic chip based on continuous microfluidics and a miniature interdigital capacitor (IDC). The novel chip consists of three individually accessible heaters, three platinum temperature sensors and two liquid cooling and mixing zones. The IDC is designed to achieve localized, fast and uniform heating of nanoliter volumes flowing through the microfluidic channel. The heating performance of the IDC located on the novel chip was evaluated using a fluorescent dye (Rhodamine B) diluted in demineralized water on a novel microwave-optical-fluidic (MOF) measurement setup. The MOF setup allows simultaneous microwave excitation of the IDC by means of a custom-made printed circuit board (connected to microwave equipment) placed in a top stage of a microscope, manipulation of liquid flowing through the channel located over the IDC with a pump and optical inspection of the same liquid flowing over the IDC using a fast camera, a light source and the microscope. The designed IDC brings a liquid volume of around 1.2 nL from room temperature to 100 °C in 21 ms with 1.58 W at 25 GHz. Next to the heating capability, the designed IDC can dielectrically sense the flowing liquid. Liquid sensing was evaluated on different concentration of water-isopropanol mixtures, and a reflection coefficient magnitude change of 6 dB was recorded around 8.1 GHz, while the minimum of the reflection coefficient magnitude shifted in the same frequency range for 60 MHz.
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Affiliation(s)
- Tomislav Markovic
- Division ESAT-TELEMIC, KU Leuven, Kasteelpark Arenberg 10 box 2444, 3001 Leuven, Belgium.
| | - Juncheng Bao
- Division ESAT-TELEMIC, KU Leuven, Kasteelpark Arenberg 10 box 2444, 3001 Leuven, Belgium.
| | - Gertjan Maenhout
- Division ESAT-TELEMIC, KU Leuven, Kasteelpark Arenberg 10 box 2444, 3001 Leuven, Belgium.
| | - Ilja Ocket
- Division ESAT-TELEMIC, KU Leuven, Kasteelpark Arenberg 10 box 2444, 3001 Leuven, Belgium.
- imec, imec PERSYBE Group, Kapeldreef 75, 3001 Heverlee, Belgium.
| | - Bart Nauwelaers
- Division ESAT-TELEMIC, KU Leuven, Kasteelpark Arenberg 10 box 2444, 3001 Leuven, Belgium.
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234
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Tortajada-Genaro LA, Yamanaka ES, Maquieira Á. Consumer electronics devices for DNA genotyping based on loop-mediated isothermal amplification and array hybridisation. Talanta 2019; 198:424-431. [PMID: 30876582 DOI: 10.1016/j.talanta.2019.01.124] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 01/18/2019] [Accepted: 01/21/2019] [Indexed: 12/17/2022]
Abstract
Consumer electronic technologies offer practical performances to develop compact biosensing systems intended for the point-of-care testing of DNA biomarkers. Herein a discrimination method for detecting single nucleotide polymorphisms, based on isothermal amplification and on-chip hybridisation, was developed and integrated into user-friendly optical devices: e.g., USB digital microscope, flatbed scanner, smartphone and DVD drive. In order to adequately identify a single base change, loop-mediated isothermal amplification (LAMP) was employed, with high yields (8 orders) within 45 min. Subsequently, products were directly hybridised to the allele-specific probes attached to plastic chips in an array format. After colorimetric staining, four consumer electronic techniques were compared. Sensitive precise measurements were taken (high signal-to-noise ratios, 10-μm image resolution, 99% scan-to-scan reproducibility). These features confirmed their potential as analytical tools, are a competitive alternative to fluorescence scanners, and incorporate additional advantages, such as user-friendly interface and connectivity for telemedicine needs. The analytical performances of the integrated platform (assay and reader) in the human samples were also excellent, with a low detection limit (100 genomic DNA copies), and reproducible (<15%) and cheap assays (< 10 €/test). The correct genotyping of a genetic biomarker (single-nucleotide polymorphism located in the GRIK4 gene) was achieved as the assigned genotypes agreed with those determined by using sequencing. The portability, favourable discriminating and read-out capabilities reveal that the implementation of mass-produced low-cost devices into minimal-specialised clinical laboratories is closer to becoming a reality.
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Affiliation(s)
- Luis A Tortajada-Genaro
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, E46022 Valencia, Spain; Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València-Universitat de València, Valencia, Spain; Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain.
| | - Eric Seiti Yamanaka
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, E46022 Valencia, Spain
| | - Ángel Maquieira
- Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n, E46022 Valencia, Spain; Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València-Universitat de València, Valencia, Spain; Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
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235
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Tang W, Yang J, Wang F, Wang J, Li Z. Thiocholine-triggered reaction in personal glucose meters for portable quantitative detection of organophosphorus pesticide. Anal Chim Acta 2019; 1060:97-102. [PMID: 30902336 DOI: 10.1016/j.aca.2019.01.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/29/2018] [Accepted: 01/23/2019] [Indexed: 12/14/2022]
Abstract
A portable and user-friendly method using personal glucose meters for on-site quantitative detection of organophosphorus pesticide (OP) was developed. The inhibition of organophosphorus compounds on acetylcholinesterase (AChE) leads to reduced yields of thiocholine formed by the enzymatic hydrolysis of acetylthiocholine chloride. Ferricyanide ([Fe(CN)6]3-), the mediator used in glucose test strips for electron transfer to the electrode, can be rapidly reduced to ferrocyanide ([Fe(CN)6]4-) by thiocholine. This reaction enables direct measurement of thiocholine by personal glucose meters in the same way as measuring the glucose in blood, offering an interesting choice to quantify OP. After incubation of AChE for 30 min and enzymatic reaction of 10 min, the yield of thiocholine was measured by a personal glucose meter, achieving detection limit of 5 μg L-1 for paraoxon. The proposed method was successfully applied to the detection in apples and cucumbers, presenting promising potential for on-site OP detection in food samples.
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Affiliation(s)
- Wenzhi Tang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi, 712100, China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, 712100, China
| | - Jingxian Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi, 712100, China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, 712100, China
| | - Fei Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi, 712100, China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, 712100, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhonghong Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, Shaanxi, 712100, China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, 712100, China.
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236
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Zhang Y, Ai J, Dong Y, Zhang S, Gao Q, Qi H, Zhang C, Cheng Z. Combining 3D graphene-like screen-printed carbon electrode with methylene blue-loaded liposomal nanoprobes for phospholipase A 2 detection. Biosens Bioelectron 2019; 126:255-260. [PMID: 30445300 PMCID: PMC6413735 DOI: 10.1016/j.bios.2018.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/06/2018] [Accepted: 11/02/2018] [Indexed: 01/08/2023]
Abstract
Phospholipase A2 (PLA2) enzyme could be acted as a unique biomarker for forecasting and diagnosing certain diseases. Therefore, it is important to monitor PLA2 activity in biological and clinical samples. In this work, a simple electrochemical assay for PLA2 activity was developed based on a screen-printed carbon electrode (SPCE) with 3D graphene-like surface. When the PLA2-containing sample was mixed with the nanoprobes, i.e. the electroactive marker methylene blue (MB) encapsulated within nanometer-sized phospholipid liposomes, MB was released and adsorbed/enriched in site onto the surface of SPCE in a micro-cell. The encapsulation and enzymatic release of MB were evaluated using UV-Vis and fluorescence. The peak current due to oxidation of the adsorbed MB on the SPCE was measured by square-wave voltammetry (SWV). The current was directly linear to the PLA2 activity from 5 U/L to 200 U/L with a detection limit of 3 U/L. The same method can also be used for screening PLA2 inhibitors. Thus, the enrichment strategy developed in this work could be a promising signal amplification method for the sensitive and selective detection of PLA2 in biological or clinical samples.
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Affiliation(s)
- Yonghua Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China; College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, China
| | - Junjie Ai
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Yanan Dong
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Shiyu Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Qiang Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Honglan Qi
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Chengxiao Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Zhiliang Cheng
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
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237
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Li J, Jiang H, Rao X, Liu Z, Zhu H, Xu Y. Point-of-Care Testing of Pathogenic Bacteria at the Single-Colony Level via Gas Pressure Readout Using Aptamer-Coated Magnetic CuFe 2O 4 and Vancomycin-Capped Platinum Nanoparticles. Anal Chem 2019; 91:1494-1500. [PMID: 30586297 DOI: 10.1021/acs.analchem.8b04584] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Pressure measurements are performed everyday with simple devices, and in the field of analytical chemistry the pressure-based signaling strategy offers two important advantages, signal amplification and particular applicability in point-of-care settings. Herein, by using vancomycin (Van)-functionalized platinum nanoparticles (PtNPs@Van) and aptamer-coated magnetic CuFe2O4 nanoprobes dual-recognition units integrated with a catalyzed breakdown of H2O2 for O2 generation, we demonstrated that gas pressure can be used as a readout means for highly sensitive pathogenic bacteria identification and quantification. Using Staphylococcus aureus ( S. aureus) as a test case, integration of the molecular dual-recognition component with the catalyzed gas-generation reaction leads to a significant pressure change (Δ P), and the correlation between the concentration of S. aureus and the Δ P signal was found to be linear from 5.0 to 1.0 × 104 cfu/mL with a detection limit of 1.0 cfu/mL. Other nontarget bacteria show negative results, verifying the high specificity of the present strategy. When employed to assay S. aureus in saliva and milk samples, the approach shows recoveries from 93.3% to 107.1% with relative standard derivation (RSD) less than 8.8%. By the integration of catalyzed gas-generation reaction with the designed molecular recognition event, obviously the pressure-based signaling strategy could facilitate pathogenic bacteria identification and quantification not only in the laboratory but also in point-of-care settings, which could have great potential in the application of food safety and infectious disease diagnosis.
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238
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Razo SC, Panferova NA, Panferov VG, Safenkova IV, Drenova NV, Varitsev YA, Zherdev AV, Pakina EN, Dzantiev BB. Enlargement of Gold Nanoparticles for Sensitive Immunochromatographic Diagnostics of Potato Brown Rot. SENSORS (BASEL, SWITZERLAND) 2019; 19:E153. [PMID: 30621133 PMCID: PMC6338966 DOI: 10.3390/s19010153] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/19/2018] [Accepted: 12/28/2018] [Indexed: 12/14/2022]
Abstract
Lateral flow immunoassay (LFIA) is a convenient tool for rapid field-based control of various bacterial targets. However, for many applications, the detection limits obtained by LFIA are not sufficient. In this paper, we propose enlarging gold nanoparticles' (GNPs) size to develop a sensitive lateral flow immunoassay to detect Ralstonia solanacearum. This bacterium is a quarantine organism that causes potato brown rot. We fabricated lateral flow test strips using gold nanoparticles (17.4 ± 1.0 nm) as a label and their conjugates with antibodies specific to R. solanacearum. We proposed a signal enhancement in the test strips' test zone due to the tetrachloroauric (III) anion reduction on the GNP surface, and the increase in size of the gold nanoparticles on the test strips was approximately up to 100 nm, as confirmed by scanning electron microscopy. Overall, the gold enhancement approach decreased the detection limit of R. solanacearum by 33 times, to as low as 3 × 10⁴ cells∙mL⁻1 in the potato tuber extract. The achieved detection limit allows the diagnosis of latent infection in potato tubers. The developed approach based on gold enhancement does not complicate analyses and requires only 3 min. The developed assay together with the sample preparation and gold enlargement requires 15 min. Thus, the developed approach is promising for the development of lateral flow test strips and their subsequent introduction into diagnostic practice.
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Affiliation(s)
- Shyatesa C Razo
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
- Agricultural-Technological Institute, RUDN University, Miklukho-Maklaya Street 8/2, 117198 Moscow, Russia.
| | - Natalia A Panferova
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Vasily G Panferov
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Irina V Safenkova
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Natalia V Drenova
- All-Russian Plant Quarantine Centre, Pogranichnaya Street 32, Bykovo-2, Moscow Region, 140150 Moscow, Russia.
| | - Yuri A Varitsev
- A.G. Lorch All-Russian Potato Research Institute, Lorch Street 23, Kraskovo, Moscow Region, 140051 Moscow, Russia.
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Elena N Pakina
- Agricultural-Technological Institute, RUDN University, Miklukho-Maklaya Street 8/2, 117198 Moscow, Russia.
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
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239
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Li X, Gao L, Li F, Hou X, Wu P. Universal and label-free photosensitization colorimetric assays enabled by target-induced termini transformation of dsDNA resistant to Exo III digestion. Chem Commun (Camb) 2019; 55:7211-7214. [DOI: 10.1039/c9cc03551f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free and universal colorimetric assay was developed via the combination of CHA, Exo III digestion, and photosensitization colorimetry.
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Affiliation(s)
- Xianming Li
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Lu Gao
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Feng Li
- College of Chemistry
- Sichuan University
- Chengdu 610064
- China
- Department of Chemistry
| | - Xiandeng Hou
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
- College of Chemistry
| | - Peng Wu
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
- College of Chemistry
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240
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Li N, Yue X, Zhang L, Wang K, Zhang J, Zhang Z, Dang F. Versatile antifouling coatings based on self-assembled oligopeptides for engineering and biological materials. J Mater Chem B 2019; 7:2242-2246. [DOI: 10.1039/c9tb00084d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The existence of nonspecific protein adsorption often results in significant challenges for microfluidic devices and laboratory cultureware used in biological experiments.
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Affiliation(s)
- Nan Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Xuanfeng Yue
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Li Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Ke Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Jing Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Zhiqi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Fuquan Dang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- China
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241
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Christodouleas DC, Kaur B, Chorti P. From Point-of-Care Testing to eHealth Diagnostic Devices (eDiagnostics). ACS CENTRAL SCIENCE 2018; 4:1600-1616. [PMID: 30648144 PMCID: PMC6311959 DOI: 10.1021/acscentsci.8b00625] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 05/09/2023]
Abstract
Point-of-care devices were originally designed to allow medical testing at or near the point of care by health-care professionals. Some point-of-care devices allow medical self-testing at home but cannot fully cover the growing diagnostic needs of eHealth systems that are under development in many countries. A number of easy-to-use, network-connected diagnostic devices for self-testing are needed to allow remote monitoring of patients' health. This Outlook highlights the essential characteristics of diagnostic devices for eHealth settings and indicates point-of-care technologies that may lead to the development of new devices. It also describes the most representative examples of simple-to-use, point-of-care devices that have been used for analysis of untreated biological samples.
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Affiliation(s)
| | - Balwinder Kaur
- Department of Chemistry, University
of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Parthena Chorti
- Department of Chemistry, University
of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
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242
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Zhu Z. Smartphone-based apparatus for measuring upconversion luminescence lifetimes. Anal Chim Acta 2018; 1054:122-127. [PMID: 30712582 DOI: 10.1016/j.aca.2018.12.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/01/2018] [Accepted: 12/07/2018] [Indexed: 11/15/2022]
Abstract
Luminescence lifetime detection plays an important role in time-resolved detection and research. However, the traditional instruments always require expensive detectors such as time-correlated single photon counter or streak camera. Herein, a low-cost and miniaturized apparatus for measuring upconversion luminescence lifetimes was developed by using a smartphone equipped with a 980 nm CW laser and a motor. When the motor was driving the sample circling at a high linear velocity, the excited sample would emit a luminescence arc, which could be photographed by the phone camera. The rotating rate could be measured by a tuner APP and then used for transferring arc length to delay times. By analyzing the grayscale distribution of the luminescence arc, the luminescence decay curve was obtained, which was then used for exponential fit and calculating lifetimes. The images captured by different smartphones revealed similar lifetime values, suggesting a wide universality of this method. The whole system was not only remarkably cheaper but also more miniaturized than traditional instruments for measuring luminescence lifetimes, indicating the promising applications in point of care testing for time-resolved luminescence detection for bioanalysis and disease diagnosis.
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Affiliation(s)
- Zece Zhu
- Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
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243
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Affiliation(s)
- Simona Ranallo
- Department of Chemical Sciences and Technologies , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Alessandro Porchetta
- Department of Chemical Sciences and Technologies , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
| | - Francesco Ricci
- Department of Chemical Sciences and Technologies , University of Rome Tor Vergata , Via della Ricerca Scientifica 1 , 00133 Rome , Italy
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244
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Affiliation(s)
- Alexander C. Sun
- Electrical and Computer Engineering; University of California in; San Diego, La Jolla, CA
| | - Drew A. Hall
- Electrical and Computer Engineering; University of California in; San Diego, La Jolla, CA
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245
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Razo SC, Panferov VG, Safenkova IV, Varitsev YA, Zherdev AV, Pakina EN, Dzantiev BB. How to Improve Sensitivity of Sandwich Lateral Flow Immunoassay for Corpuscular Antigens on the Example of Potato Virus Y? SENSORS 2018; 18:s18113975. [PMID: 30445792 PMCID: PMC6263755 DOI: 10.3390/s18113975] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/09/2018] [Accepted: 11/13/2018] [Indexed: 12/14/2022]
Abstract
A simple approach was proposed to decrease the detection limit of sandwich lateral flow immunoassay (LFIA) by changing the conditions for binding between a polyvalent antigen and a conjugate of gold nanoparticles (GNPs) with antibodies. In this study, the potato virus Y (PVY) was used as the polyvalent antigen, which affects economically important plants in the Solanaceae family. The obtained polyclonal antibodies that are specific to PVY were characterized using a sandwich enzyme-linked immunosorbent assay (ELISA) and surface plasmon resonance (SPR). For LFIA, the antibodies were conjugated with GNPs with a diameter of 17.4 ± 1.0 nm. We conducted LFIAs using GNP conjugates in a dried state on the test strip and after pre-incubation with a sample. Pre-incubating the GNP conjugates and sample for 30 s was found to decrease the detection limit by 60-fold from 330 ng∙mL-1 to 5.4 ng∙mL-1 in comparison with conventional LFIA. The developed method was successfully tested for its ability to detect PVY in infected and uninfected potato leaves. The quantitative results of the proposed LFIA with pre-incubation were confirmed by ELISA, and resulted in a correlation coefficient of 0.891. The proposed approach is rapid, simple, and preserves the main advantages of LFIA as a non-laboratory diagnostic method.
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Affiliation(s)
- Shyatesa C Razo
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
- Agricultural-Technological Institute, RUDN University, Miklukho-Maklaya Street 8/2, 117198 Moscow, Russia.
| | - Vasily G Panferov
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Irina V Safenkova
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Yuri A Varitsev
- A.G. Lorch All-Russian Potato Research Institute, Kraskovo, Lorch Street 23, 140051 Moscow, Russia.
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
| | - Elena N Pakina
- Agricultural-Technological Institute, RUDN University, Miklukho-Maklaya Street 8/2, 117198 Moscow, Russia.
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
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246
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Wiesholler LM, Genslein C, Schroter A, Hirsch T. Plasmonic Enhancement of NIR to UV Upconversion by a Nanoengineered Interface Consisting of NaYF4:Yb,Tm Nanoparticles and a Gold Nanotriangle Array for Optical Detection of Vitamin B12 in Serum. Anal Chem 2018; 90:14247-14254. [DOI: 10.1021/acs.analchem.8b03279] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lisa Marie Wiesholler
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Christa Genslein
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Alexandra Schroter
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Thomas Hirsch
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
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247
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Zhu J, Wen M, Wen W, Du D, Zhang X, Wang S, Lin Y. Recent progress in biosensors based on organic-inorganic hybrid nanoflowers. Biosens Bioelectron 2018; 120:175-187. [DOI: 10.1016/j.bios.2018.08.058] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/24/2018] [Accepted: 08/24/2018] [Indexed: 12/31/2022]
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248
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Walper SA, Lasarte Aragonés G, Sapsford KE, Brown CW, Rowland CE, Breger JC, Medintz IL. Detecting Biothreat Agents: From Current Diagnostics to Developing Sensor Technologies. ACS Sens 2018; 3:1894-2024. [PMID: 30080029 DOI: 10.1021/acssensors.8b00420] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although a fundamental understanding of the pathogenicity of most biothreat agents has been elucidated and available treatments have increased substantially over the past decades, they still represent a significant public health threat in this age of (bio)terrorism, indiscriminate warfare, pollution, climate change, unchecked population growth, and globalization. The key step to almost all prevention, protection, prophylaxis, post-exposure treatment, and mitigation of any bioagent is early detection. Here, we review available methods for detecting bioagents including pathogenic bacteria and viruses along with their toxins. An introduction placing this subject in the historical context of previous naturally occurring outbreaks and efforts to weaponize selected agents is first provided along with definitions and relevant considerations. An overview of the detection technologies that find use in this endeavor along with how they provide data or transduce signal within a sensing configuration follows. Current "gold" standards for biothreat detection/diagnostics along with a listing of relevant FDA approved in vitro diagnostic devices is then discussed to provide an overview of the current state of the art. Given the 2014 outbreak of Ebola virus in Western Africa and the recent 2016 spread of Zika virus in the Americas, discussion of what constitutes a public health emergency and how new in vitro diagnostic devices are authorized for emergency use in the U.S. are also included. The majority of the Review is then subdivided around the sensing of bacterial, viral, and toxin biothreats with each including an overview of the major agents in that class, a detailed cross-section of different sensing methods in development based on assay format or analytical technique, and some discussion of related microfluidic lab-on-a-chip/point-of-care devices. Finally, an outlook is given on how this field will develop from the perspective of the biosensing technology itself and the new emerging threats they may face.
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Affiliation(s)
- Scott A. Walper
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Guillermo Lasarte Aragonés
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College of Science, George Mason University Fairfax, Virginia 22030, United States
| | - Kim E. Sapsford
- OMPT/CDRH/OIR/DMD Bacterial Respiratory and Medical Countermeasures Branch, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Carl W. Brown
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College of Science, George Mason University Fairfax, Virginia 22030, United States
| | - Clare E. Rowland
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- National Research Council, Washington, D.C. 20036, United States
| | - Joyce C. Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
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249
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Zahn JD. Microdevice Development and Artificial Organs. Artif Organs 2018; 43:17-20. [PMID: 30260017 DOI: 10.1111/aor.13288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeffrey D Zahn
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ, 08854, USA
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250
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Zhang C, Liu X, Yao Y, Liu K, Hui W, Zhu J, Dou Y, Hua K, Peng M, Wang Z, Vermorken AJM, Cui Y. Genotyping of Multiple Clinical Samples with a Combined Direct PCR and Magnetic Lateral Flow Assay. iScience 2018; 7:170-179. [PMID: 30245369 PMCID: PMC6153416 DOI: 10.1016/j.isci.2018.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/19/2018] [Accepted: 09/05/2018] [Indexed: 02/09/2023] Open
Abstract
Developing a sensitive, low-cost, and easy-to-use point-of-care testing system for genotyping is important for informing treatment decisions and predicting the risk of underlying diseases. Conventional methods normally require complex operational procedures as well as expensive and sophisticated instruments. Here, we report a general approach that enables us to detect the genotype of multiple sample types directly without DNA purification. Moreover, the PCR results can be further quantitatively analyzed based on a magnetic lateral flow assay (MLFA) system, which avoids multiple steps needed for conventional nucleic acid biosensors. As a demonstration, we show that three genotypes of aldehyde dehydrogenase 2 (ALDH2) can be identified using a small volume of sample with an accuracy of 100% and a sensitivity of 1.0 × 102 cells/μL, which are better than those of the gold standard methods. We believe that the direct PCR-MLFA system represents a significant advance toward the development of portable, sensitive biomedical platforms.
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Affiliation(s)
- Chao Zhang
- College of Life Sciences, Northwest University, Xi'an, China
| | - Xiaonan Liu
- College of Life Sciences, Northwest University, Xi'an, China
| | - Yao Yao
- Shaanxi Provincial Engineering Research Center of Nano-Biomedical Detection, Xi'an, China
| | - Kewu Liu
- College of Life Sciences, Northwest University, Xi'an, China
| | - Wenli Hui
- College of Life Sciences, Northwest University, Xi'an, China
| | - Juanli Zhu
- Shaanxi Provincial Engineering Research Center of Nano-Biomedical Detection, Xi'an, China
| | - Yaling Dou
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Kai Hua
- College of Life Sciences, Northwest University, Xi'an, China
| | - Mingli Peng
- Shaanxi Provincial Engineering Research Center of Nano-Biomedical Detection, Xi'an, China
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China.
| | | | - Yali Cui
- College of Life Sciences, Northwest University, Xi'an, China; Shaanxi Provincial Engineering Research Center of Nano-Biomedical Detection, Xi'an, China.
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