1
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Luu AP, Rao SS, Malik HY, Shi RB, Toubian AA, Kamei DT. Investigating bottom phase extraction from aqueous two-phase systems for detecting bacteria using the lateral-flow immunoassay. Anal Biochem 2024; 694:115634. [PMID: 39094782 DOI: 10.1016/j.ab.2024.115634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
Lateral-flow immunoassays (LFAs) can be used to diagnose urinary tract infections caused by Escherichia coli (E. coli) at the point of care. Unfortunately, urine samples containing dilute concentrations of E. coli can yield false negative results on LFAs. Our laboratory was first to implement aqueous two-phase systems (ATPSs) to preconcentrate samples into smaller volumes prior to their application on LFAs. This is achieved by manipulating the ratio of the volume of the top phase to that of the bottom phase (volume ratio; VR) and concentrating biomarkers in the bottom phase which, when applied to LFAs in fixed volumes, leads to corresponding improvements in sensitivity. This work is the first demonstration that the same LOD can be achieved irrespective of the VR when the entire bottom phase is added to LFAs. A custom 3D-printed device was also developed to decrease liquid handling steps. Across different VRs expected from patient urine variability, this diagnostic workflow successfully detected E. coli concentrations down to 2 × 105 colony-forming units (cfu) mL-1 in synthetic urine, demonstrating consistent 10-fold improvements in sensitivity compared to trials conducted without ATPS preconcentration. This method successfully addresses the variability of patient samples while remaining easy to use at the point of care.
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Affiliation(s)
- Audrey P Luu
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Shreedevi S Rao
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Humza Y Malik
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Robin B Shi
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Adam A Toubian
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Daniel T Kamei
- Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA.
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2
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Staniszewski F, Schilder A, Osinkina L, Westenthanner M, Kataeva N, Posch B, Gillitschka Y, Stoecker K, Silberreis K, Coen S, Cannas A, Matusali G, Schmidleithner C, Stehr J, Buersgens F, Peham JR. Rapid detection of SARS-CoV-2 with a mobile device based on pulse controlled amplification. Biosens Bioelectron 2024; 263:116626. [PMID: 39116633 DOI: 10.1016/j.bios.2024.116626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
In the past, vast research has been conducted on biosensors and point-of-care (PoC) diagnostics. Despite rapid advances especially during the SARS-CoV-2 pandemic in this research field a low-cost molecular biosensor exhibiting the user-friendliness of a rapid antigen test, and also the sensitivity and specificity of a PCR test, has not been developed yet. To this end we developed a novel microfluidics based and handheld PoC device, that facilitates viral detection at PCR sensitivity and specificity in less than 40 min, including 15 min sample preparation. This was attained by incorporation of pulse controlled amplification (PCA), a method which uses short electrical pulses to rapidly increase the temperature of a small fraction of the sample volume. In this work, we present a low-cost PCA device with a microfluidic consumable intended for the use in a decentralized or home-setting. We used finite element analysis (FEA) simulations to display the fundamental principle and highlight the critical parameter dependency of PCA, such as pulse length and resistor shape. Furthermore, we integrated a simple and fast workflow for sample preparation and evaluated the limit of detection (LoD) for SARS-CoV-2 viral RNA, which is 0.88 copies/μL (=44 copies/reaction), and thus, comparable to conventional RT-qPCR. Additionally, target specificity of the device was validated. Our device and PCA approach enables cost-effective, rapid and mobile molecular diagnostics while remaining highly sensitive and specific.
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Affiliation(s)
- Filip Staniszewski
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Alexandra Schilder
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Lidiya Osinkina
- HP Health Solutions Germany GmbH, Am Klopferspitz 19, 82152, Planegg, Germany
| | | | - Nadezhda Kataeva
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Barbara Posch
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Yasmin Gillitschka
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Kilian Stoecker
- Bundeswehr Institute of Microbiology, Neuherbergstr. 11, 80937, Munich, Germany
| | - Kim Silberreis
- Bundeswehr Institute of Microbiology, Neuherbergstr. 11, 80937, Munich, Germany
| | - Sabrina Coen
- Laboratory of Virology, National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, Via Portuense 292, 00149, Rome, Italy
| | - Angela Cannas
- Laboratory of Microbiology, National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, Via Portuense 292, 00149, Rome, Italy
| | - Giulia Matusali
- Laboratory of Virology, National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, Via Portuense 292, 00149, Rome, Italy
| | - Christina Schmidleithner
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria
| | - Joachim Stehr
- HP Health Solutions Germany GmbH, Am Klopferspitz 19, 82152, Planegg, Germany
| | - Federico Buersgens
- HP Health Solutions Germany GmbH, Am Klopferspitz 19, 82152, Planegg, Germany
| | - Johannes R Peham
- AIT Austrian Institute of Technology, Center for Health and Bioresources, Competence Unit Molecular Diagnostics, Giefinggasse 4, 1210, Vienna, Austria.
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3
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Raza SHA, Huang Z, Pang Y, Zhong R, Li X, Pant SD, Luo L, Lei H. Rapid Screening of Prednisolone Acetate Adulterants in Health Foods Using Colloidal Gold Immunochromatographic Assay. Chem Phys Lipids 2024:105447. [PMID: 39368727 DOI: 10.1016/j.chemphyslip.2024.105447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Revised: 09/23/2024] [Accepted: 09/30/2024] [Indexed: 10/07/2024]
Abstract
In this study, a rapid detection method utilizing colloidal gold immunochromatography (CG-ICA) was developed for the detection of illegally added prednisone acetate in health foods. Initially, the preparation conditions of colloidal gold solution were optimized. The optimal potassium carbonate dosage, antibody diluent type, antibody dosage, probe labeling time, blocking time and BSA dosage were determined. Technical analysis was performed to ensure that the established CG-ICA exhibited satisfactory color development and inhibition rates. Under optimized conditions, the cut-off value of CG-ICA was 250μg/kg. The assay demonstrated a sensitivity of 100%, a false positive rate of 8%, and a false negative rate of 0, indicating high specificity for prednisone acetate. The results obtained from testing actual samples were consistent with those obtained using LC-MS/MS, thereby verifying the reliability of the developed method. This method offers robust support for the rapid detection of illegally added prednisone acetate in health foods.
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Affiliation(s)
- Sayed Haidar Abbas Raza
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, China
| | - Zixin Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yimeng Pang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Ruimin Zhong
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan 512005, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Sameer D Pant
- Gulbali Institute, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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4
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Kakkar S, Gupta P, Singh Yadav SP, Raj D, Singh G, Chauhan S, Mishra MK, Martín-Ortega E, Chiussi S, Kant K. Lateral flow assays: Progress and evolution of recent trends in point-of-care applications. Mater Today Bio 2024; 28:101188. [PMID: 39221210 PMCID: PMC11364909 DOI: 10.1016/j.mtbio.2024.101188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 07/20/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
Paper based point-of-care (PoC) detection platforms applying lateral flow assays (LFAs) have gained paramount approval in the diagnostic domain as well as in environmental applications owing to their ease of utility, low cost, and rapid signal readout. It has centralized the aspect of self-evaluation exhibiting promising potential in the last global pandemic era of Covid-19 implementing rapid management of public health in remote areas. In this perspective, the present review is focused towards landscaping the current framework of LFAs along with integration of components and characteristics for improving the assay by pushing the detection limits. The review highlights the synergistic aspects of assay designing, sample enrichment strategies, novel nanomaterials-based signal transducers, and high-end analytical techniques that contribute significantly towards sensitivity and specificity enhancement. Various recent studies are discussed supporting the innovations in LFA systems that focus upon the accuracy and reliability of rapid PoC testing. The review also provides a comprehensive overview of all the possible difficulties in commercialization of LFAs subjecting its applicability to pathogen surveillance, water and food testing, disease diagnostics, as well as to agriculture and environmental issues.
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Affiliation(s)
- Saloni Kakkar
- Council of Scientific and Industrial Research (CSIR)- Centre for Cellular & Molecular Biology (CCMB), Hyderabad, 500007, India
| | - Payal Gupta
- Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun, 248002, India
| | - Shiv Pratap Singh Yadav
- Council of Scientific and Industrial Research (CSIR)- Centre for Cellular & Molecular Biology (CCMB), Hyderabad, 500007, India
| | - Divakar Raj
- Department of Allied Sciences, School of Health Sciences and Technology, UPES, Dehradun, 248007, India
| | - Garima Singh
- Department of Allied Sciences, School of Health Sciences and Technology, UPES, Dehradun, 248007, India
| | - Sakshi Chauhan
- Dept. of Cardiothoracic and Vascular Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | | | - Elena Martín-Ortega
- IFCAE, Research Institute of Physics and Aerospace Science, Universidade de Vigo, Ourense, 32004, Spain
| | - Stefano Chiussi
- CINTECX, Universidade de Vigo, New Materials Group, Vigo, 36310, Spain
| | - Krishna Kant
- CINBIO, Universidade de Vigo, Campus Universitario As Lagoas Marcosende, Vigo, 36310, Spain
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Greater Noida, U.P., India
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5
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Pujato N, Gimenez JM, Peretti LE, Landolt NY, Jacob P, Chiani YT, Schmeling MF, Miraballes I, Vanasco NB. Development of a new accurate lateral flow immunoassay for diagnosis of human leptospirosis. Eur J Clin Microbiol Infect Dis 2024; 43:1959-1968. [PMID: 39093525 DOI: 10.1007/s10096-024-04912-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 07/25/2024] [Indexed: 08/04/2024]
Abstract
PURPOSE The current diagnostic methods for leptospirosis diagnosis are technically complex and expensive, with limited applicability to specialized laboratories. Furthermore, they lack diagnostic accuracy in the acute stage of the disease, which coincides with a period when antibiotics are highly effective. New simple and accurate tests are mandatory to decentralize and improve diagnosis. Here, we introduced a new lateral flow immunoassay (Lepto-LF) for human leptospirosis. METHODS We conducted a double-blinded assay using 104 serum samples from patients with confirmed or discarded diagnosis for leptospirosis. The diagnostic performance of Lepto-LF was estimated across different ranges of days from onset of symptoms (dpo), considering the diagnostic algorithm as reference standard. Additionally, it was compared with the screening methods enzyme-linked immunosorbent assay (IgM-ELISA) and the slide agglutination test using temperature-resistant antigen (SATR). RESULTS Lepto-LF exhibited perfect diagnostic performance with a Youden´s index J = 1 from 6 dpo in the acute phase. IgM-ELISA gave slightly lower accuracy with J = 0.91 and 95.5% of both sensitivity and specificity; while SATR showed a markedly inferior yield (J = 0.41, sensitivity = 95.5%, specificity = 45.5%). The performances remained consistent in the convalescence phase of the disease (> 10 dpo). CONCLUSION Lepto-LF was found to be a reliable test for simple, rapid and early diagnosis of leptospirosis, resulting a promising tool for decentralizing leptospirosis diagnosis and enabling timely treatment of patients. In addition, Lepto-LF may be employed as confirmatory test, especially in remote areas and vulnerable contexts where the standard MAT is not available.
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Affiliation(s)
- Nazarena Pujato
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ruta Nacional Nº 168, km 472., Santa Fe (CP 3000), Argentina.
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina.
| | - Juan M Gimenez
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ruta Nacional Nº 168, km 472., Santa Fe (CP 3000), Argentina
| | - Leandro E Peretti
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC, UNL-CONICET), Santa Fe (CP 3000), Argentina
- Facultad de Ciencias Médicas (FCM), Universidad Nacional del Litoral (UNL), Santa Fe (CP 3000), Argentina
| | - Noelia Y Landolt
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina
| | - Paulina Jacob
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ruta Nacional Nº 168, km 472., Santa Fe (CP 3000), Argentina
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina
| | - Yosena T Chiani
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina
| | - Maria F Schmeling
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina
| | - Iris Miraballes
- Inmunología Clínica (BIOCLIN)/Biotecnología (IPTP)-Facultad de Química, Universidad de la República (UdelaR), Montevideo (CP 11800), Uruguay
| | - Norma B Vanasco
- Facultad de Bioquímica y Ciencias Biológicas (FBCB), Universidad Nacional del Litoral (UNL), Ruta Nacional Nº 168, km 472., Santa Fe (CP 3000), Argentina
- Instituto Nacional de Enfermedades Respiratorias (INER) "Dr. E. Coni", Administración Nacional de Laboratorios e Institutos de Salud (ANLIS) "Dr. Carlos G. Malbrán", Santa Fe (CP 3000), Argentina
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6
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Atta S, Zhao Y, Sanchez S, Seedial D, Devadhasan JP, Summers AJ, Gates-Hollingsworth MA, Pflughoeft KJ, Gu J, Montgomery DC, AuCoin DP, Zenhausern F, Vo-Dinh T. Plasmonic-Enhanced Colorimetric Lateral Flow Immunoassays Using Bimetallic Silver-Coated Gold Nanostars. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39342509 DOI: 10.1021/acsami.4c13086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
The colorimetric lateral flow immunoassay (cLFIA) has gained widespread attention as a point-of-care testing (POCT) technique due to its low cost, short analysis time, portability, and capability of being performed by unskilled operators with minimal requirement of reagents. However, the low analytical sensitivity of conventional LFIA based on colloidal gold nanospheres limits their applications for sensitive detection of trace amounts of target analytes. In this study, we introduced a novel plasmonic-enhanced colorimetric LFIA (PE-cLFIA) platform featuring bimetallic silver-coated gold nanostars (BGNS) with exceptional optical properties, leading to ultrahigh visual color brightness. The BGNS-based PE-cLFIA was successfully applied to detect a model analyte, low-calcium response V (LcrV), a virulence protein factor found in Yersinia pestis, the causative agent of bubonic plague. The PE-cLFIA sensing using BGNS-3 composed of 45 nm silver thickness showed a high visual colorimetric sensitivity with a detection limit as low as 13.7 pg/mL, which was around 50 times more sensitive than that of a traditional gold nanoparticle-based LFIA. In addition, the antibody-conjugated BGNS-3 showed excellent stability over 6 months. To illustrate the potential for clinical applications, we demonstrated that our LFIA platform for detecting LcrV spiked in human serum without any sample preprocessing exhibited a detection limit of 22.8 pg/mL. These results open up new opportunities for developing hybrid nanoparticle systems for sensitive POCT PE-cLFIA screening for infectious disease detection.
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Affiliation(s)
- Supriya Atta
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, United States
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Yuanhao Zhao
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, United States
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Sebastian Sanchez
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Deven Seedial
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, United States
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Jasmine Pramila Devadhasan
- Center for Applied Nano Bioscience and Medicine, College of Medicine, University of Arizona, Phoenix, Arizona 85004, United States
| | - Alexander Jarrett Summers
- Center for Applied Nano Bioscience and Medicine, College of Medicine, University of Arizona, Phoenix, Arizona 85004, United States
| | | | - Kathryn J Pflughoeft
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, Reno, Nevada 89557, United States
| | - Jian Gu
- Center for Applied Nano Bioscience and Medicine, College of Medicine, University of Arizona, Phoenix, Arizona 85004, United States
- Department of Basic Medical Sciences, The University of Arizona, College of Medicine, 475 North Fifth Street, Phoenix, Arizona 85004, United States
| | - Douglas C Montgomery
- Center for Applied Nano Bioscience and Medicine, College of Medicine, University of Arizona, Phoenix, Arizona 85004, United States
- School of Computing and Augmented Intelligence, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, Arizona 85281, United States
| | - David P AuCoin
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, Reno, Nevada 89557, United States
| | - Frederic Zenhausern
- Center for Applied Nano Bioscience and Medicine, College of Medicine, University of Arizona, Phoenix, Arizona 85004, United States
- Department of Basic Medical Sciences, The University of Arizona, College of Medicine, 475 North Fifth Street, Phoenix, Arizona 85004, United States
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, United States
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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7
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Wang J, Zhao L, Li X, Gao Y, Yong W, Jin Y, Dong Y. Development of aptamer-based lateral flow devices for rapid detection of SARS-CoV-2 S protein and uncertainty assessment. Talanta 2024; 281:126825. [PMID: 39276574 DOI: 10.1016/j.talanta.2024.126825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 08/18/2024] [Accepted: 09/05/2024] [Indexed: 09/17/2024]
Abstract
The outbreak and spread of COVID-19 have highlighted the urgent need for early diagnosis of SARS-CoV-2. Nucleic acid testing as an authoritative tool, is cumbersome, time-consuming, and easy to cross-infect, while the available antibody self-testing kits are deficient in sensitivity and stability. In this study, we developed competitive aptamer-based lateral flow devices (Apt-LFDs) for the quantitative detection of SARS-CoV-2 spike (S) protein. Molecular docking simulation was used to analyze the active binding sites of the aptamer to S protein, guiding complementary DNA (cDNA) design. Then a highly efficient freezing strategy was applied for the conjugation of gold nanoparticles (AuNPs) and DNA probes. Under optimal conditions, the linear range of the constructed Apt-LFDs was 0.1-1 μg/mL, and the limit of detection (LOD) was 51.81 ng/mL. The cross-reactivity test and stability test of the Apt-LFDs showed good specificity and reliability. The Apt-LFDs had recoveries ranging from 89.45 % to 117.12 % in pharyngeal swabs. Notably, the uncertainty of the analytical result was evaluated using a "bottom-up" approach. At a 95 % confidence level, the uncertainty report of (453.37±54.86) ng/mL with k = 2 was yielded. Overall, this study provides an important reference for the convenient and reliable detection of virus proteins based on LFDs.
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Affiliation(s)
- Jiachen Wang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Lianhui Zhao
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Xiaotong Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Yunhua Gao
- Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China
| | - Wei Yong
- Chinese Academy of Inspection and Quarantine, Beijing, 100020, PR China
| | - Yong Jin
- Chinese Academy of Inspection and Quarantine, Beijing, 100020, PR China
| | - Yiyang Dong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PR China.
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8
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Tunakhun P, Ngernpimai S, Tippayawat P, Choowongkomon K, Anutrakulchai S, Charoensri N, Tavichakorntrakool R, Daduang S, Srichaiyapol O, Maraming P, Boonsiri P, Daduang J. A Highly Sensitive Lateral-Flow Strip Using Latex Microspheres to Detect NGAL in Urine Samples. ACS OMEGA 2024; 9:36475-36484. [PMID: 39220499 PMCID: PMC11359618 DOI: 10.1021/acsomega.4c04322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/16/2024] [Accepted: 07/23/2024] [Indexed: 09/04/2024]
Abstract
The incidence of kidney disease is increasing worldwide. Rapid and cost-effective approaches for early detection help prevent this disease. Neutrophil gelatinase-associated lipocalin protein (NGAL) is a novel biomarker for acute kidney injury (AKI) and chronic kidney disease (CKD). We aimed to develop a lateral flow strip (LFS) based on a lateral flow immunoassay method (LFIA), using latex microspheres (LMs) as a color labeling to detect NGAL in urine. The performance and potential of the developed LMs-LFS at a point-of-care (POC) testing were evaluated. The results showed that LMs-LFS successfully detected urinary NGAL within 15 min with high specificity without cross-reactivity to or interference from other endogenous substances in urine. The visual limit of detection (vLOD) was 18.75 ng/mL, and the limit of detection (LOD) was 1.65 ng/mL under the optimum condition. The LMs-LFS developed in this study showed a high correlation with the enzyme-linked immunosorbent assay (ELISA) method (R 2 = 0.973, n = 60 urine specimens) for detecting NGAL in urine. The LMs-LFS remained stable for at least six months at room temperature. The LMs-LFS can be a rapid, sensitive, and specific tool for the diagnosis and follow-up of renal disorders at the POC.
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Affiliation(s)
- Paweena Tunakhun
- Biomedical
Sciences, Graduate School, Khon Kaen University, Khon Kaen 40002, Thailand
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sawinee Ngernpimai
- Center
for Innovation and Standard for Medical Technology and Physical Therapy
(CISMaP), Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Tippayawat
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kiattawee Choowongkomon
- Department
of Biochemistry, Faculty of Science, Kasetsart
University, Bangkok 10900, Thailand
| | - Sirirat Anutrakulchai
- Department
of Medicine, Faculty of Medicine, Khon Kaen
University, Khon Kaen 40002, Thailand
| | - Nicha Charoensri
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Ratree Tavichakorntrakool
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sakda Daduang
- Division
of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranee Srichaiyapol
- Center
for Innovation and Standard for Medical Technology and Physical Therapy
(CISMaP), Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Pornsuda Maraming
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharee Boonsiri
- Department
of Biochemistry, Faculty of Medicine, Khon
Kaen University, Khon Kaen 40002, Thailand
| | - Jureerut Daduang
- Centre
for Research and Development of Medical Diagnostic Laboratories (CMDL),
Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
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9
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Abedi N, Zeinoddini M, Shoushtari M. Optimized detection of Salmonella typhimurium using aptamer lateral flow assay. Biotechnol Lett 2024; 46:583-592. [PMID: 38806936 DOI: 10.1007/s10529-024-03484-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/06/2024] [Accepted: 03/12/2024] [Indexed: 05/30/2024]
Abstract
Salmonella typhimurium, a pathogenic bacterium with significant implications in medicine and the food industry, poses a substantial threat by causing foodborne illnesses such as typhoid fever. Accurate diagnosis of S. typhimurium is challenging due to its overlap symptoms with various diseases. This underscores the need for a precise and efficient diagnostic approach. In this study, we developed a biosensor using the Taguchi optimization method based on aptamer lateral flow assay (LFA) for the detection of S. typhimurium. Therefore, signal probe and nanobioprobe were designed using anti-Salmonella aptamer, conjugated with gold nanoparticles (GNPs), and used in LFA. The strategy of this test is based on a competitive format between the bacteria immobilized on the membrane and the bacteria present in the tested sample. Moreovere, the optimization of various factors affecting the aptamer LFA, including the concentration of bacteria (immobilized and into the sample) and the concentration of nanobioprop, were performed using the Taguchi test designing method. The data showed that the optimal conditions for the LFA reaction was 108 CFU/mL of immobilized bacteria and 1.5 μg/μL of nanobioprop concentration. Then, the visual detection limit of S. typhimurium was estimated as 105 CFU/mL. The reaction results were obtained within 20 min, and there were no significant cross-reactions with other food pathogens. In conclusion, the aptamer-LFA diagnostic method, optimized using the Taguchi approach, emerges as a reliable, straightforward, and accurate tool for the detection of S. typhimurium. Overall, this method can be a portable diagnostic kit for the detection and identification of bacteria.
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Affiliation(s)
- Nafise Abedi
- Department of Bioscience and Biotechnology, Faculty of Passive Defense, Malek-Ashtar University of Technology, Tehran, Iran
| | - Mehdi Zeinoddini
- Department of Bioscience and Biotechnology, Faculty of Passive Defense, Malek-Ashtar University of Technology, Tehran, Iran.
| | - Mohammad Shoushtari
- Department of Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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10
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Peng B, Wang Y, Xie Y, Dong X, Liu W, Li D, Chen H. An overview of influenza A virus detection methods: from state-of-the-art of laboratories to point-of-care strategies. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4496-4515. [PMID: 38946516 DOI: 10.1039/d4ay00508b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Influenza A virus (IAV), a common respiratory infectious pathogen, poses a significant risk to personal health and public health safety due to rapid mutation and wide host range. To better prevent and treat IAV, comprehensive measures are needed for early and rapid screening and detection of IAV. Although traditional laboratory-based techniques are accurate, they are often time-consuming and not always feasible in emergency or resource-limited areas. In contrast, emerging point-of-care strategies provide faster results but may compromise sensitivity and specificity. Here, this review critically evaluates various detection methods for IAV from established laboratory-based procedures to innovative rapid diagnosis. By analyzing the recent research progress, we aim to address significant gaps in understanding the effectiveness, practicality, and applicability of these methods in different scenarios, which could provide information for healthcare strategies, guide public health response measures, and ultimately strengthen patient care in the face of the ongoing threat of IAV. Through a detailed comparison of diagnostic models, this review can provide a reliable reference for rapid, accurate and efficient detection of IAV, and to contribute to the diagnosis, treatment, prevention, and control of IAV.
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Affiliation(s)
- Bin Peng
- Guangzhou Huashang Vocational College, Guangzhou, 510000, China
| | - Yaqi Wang
- Guangzhou Institute for Food Inspection, Guangzhou, 510000, China
| | - Yueliang Xie
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510000, China
| | - Xiangyan Dong
- State Key Laboratory of Chemical Oncogenomics, Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
| | - Wen Liu
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510000, China
| | - Dan Li
- College of Pharmacy, Jinzhou Medical University, Jinzhou, 121000, China
| | - Hui Chen
- State Key Laboratory of Chemical Oncogenomics, Institute of Biomedical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
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11
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Ying X, Fu W, Zhu L, Sun T, Qi M, Zhou L, Wang Y, Wang J, Su B, Zhang J. Electrochemical Lateral Flow Immunoassay with Built-In Electrodes for Ultrasensitive and Wireless Detection of Inflammatory Biomarkers. Anal Chem 2024; 96:10630-10638. [PMID: 38912708 DOI: 10.1021/acs.analchem.4c01224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Paper-based lateral flow immunoassays (LFIAs) are cost-effective, portable, and simple methods for detection of diverse analytes, which however only provide qualitative or semiquantitative results and lack sufficient sensitivity. A combination of LFIA and electrochemical detection, namely, electrochemical lateral flow immunoassay (eLFIA), enables quantitative detection of analytes with high sensitivity, but the integration of external electrodes makes the system relatively expensive and unstable. Herein, the working, counter, and reference electrodes were prepared directly on the nitrocellulose membrane using screen printing, which remarkably simplified the structure of eLFIA and decreased the cost. Moreover, a horseradish peroxidase (HRP)-based electrochemical signal amplification strategy was used for further increasing the analytical sensitivity. HRP captured on the working electrode can catalyze the oxidation of tetramethylbenzidine (TMB) to form the TMB-TMBox precipitate on the electrode surface, which as an electrochemically active product can output an amplified current for quantification. We demonstrated that the eLFIA could detect low-abundant inflammatory biomarkers in human plasma samples with limits of detection of 0.17 and 0.54 pg mL-1 for interleukin-6 and C-reactive protein, respectively. Finally, a fully portable system was fabricated by integrating eLFIA with a flexible and wireless electrochemical workstation, realizing the point-of-care detection of interleukin-6.
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Affiliation(s)
- Xudong Ying
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Wenxuan Fu
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Lihang Zhu
- Department of Clinical Engineering, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310019, China
| | - Tao Sun
- Department of Laboratory Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310019, China
| | - Min Qi
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Lin Zhou
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yafeng Wang
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou 310016, China
| | - Jing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Jun Zhang
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou 310016, China
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12
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Lieberman M, Badea A, Desnoyers C, Hayes K, Park JN. An urgent need for community lot testing of lateral flow fentanyl test strips marketed for harm reduction in Northern America. Harm Reduct J 2024; 21:115. [PMID: 38877522 PMCID: PMC11179324 DOI: 10.1186/s12954-024-01025-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 05/15/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND Fentanyl test strips (FTS) are lateral flow immunoassay strips designed for detection of ng/mL levels of fentanyl in urine. In 2021, the US Centers for Disease Control and the Substance Abuse and Mental Health Administration stated that federal funds could be used for procurement of FTS for harm reduction strategies approved by the government such as drug checking. The market for FTS has expanded rapidly in the US and Canada. However, there is no regulatory oversight by either government to ensure proper function of FTS that are being marketed for drug checking. MAIN BODY Many brands of FTS have rapidly entered the harm reduction market, creating concerns about the reproducibility and accuracy of their performance from brand to brand and lot to lot. Some examples are provided in this Comment. Similar problems with product quality were observed in the mid 2000's when lateral flow immunoassays for malaria were funded in many countries and again in 2020, when COVID-19 tests were in huge demand. The combination of high demand and low levels of regulation and enforcement led some manufacturers to join the goldrush without adequate field testing or quality assurance. We argue that the harm reduction community urgently needs to set a lot checking program in place. A set of simple protocols for conducting the tests and communicating the results have been developed, and are described in the following Perspectives paper in this issue. CONCLUSION In the absence of governmental regulation and enforcement, the harm reduction community should implement a FTS lot checking program. Based on previous experience with the malaria diagnostic lot checking program, this inexpensive effort could identify products that are not suitable for harm reduction applications and provide valuable feedback to manufacturers. Dissemination of the results will help harm reduction organizations to ensure that FTS they use for drug checking are fit for the purpose.
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Affiliation(s)
| | - Adina Badea
- Lifespan Academic Medical Center, Providence, RI, USA
- Warren Alpert Medical School, Brown University, Providence, RI, USA
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Lemmink IB, Straub LV, Bovee TFH, Mulder PPJ, Zuilhof H, Salentijn GI, Righetti L. Recent advances and challenges in the analysis of natural toxins. ADVANCES IN FOOD AND NUTRITION RESEARCH 2024; 110:67-144. [PMID: 38906592 DOI: 10.1016/bs.afnr.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
Natural toxins (NTs) are poisonous secondary metabolites produced by living organisms developed to ward off predators. Especially low molecular weight NTs (MW<∼1 kDa), such as mycotoxins, phycotoxins, and plant toxins, are considered an important and growing food safety concern. Therefore, accurate risk assessment of food and feed for the presence of NTs is crucial. Currently, the analysis of NTs is predominantly performed with targeted high pressure liquid chromatography tandem mass spectrometry (HPLC-MS/MS) methods. Although these methods are highly sensitive and accurate, they are relatively expensive and time-consuming, while unknown or unexpected NTs will be missed. To overcome this, novel on-site screening methods and non-targeted HPLC high resolution mass spectrometry (HRMS) methods have been developed. On-site screening methods can give non-specialists the possibility for broad "scanning" of potential geographical regions of interest, while also providing sensitive and specific analysis at the point-of-need. Non-targeted chromatography-HRMS methods can detect unexpected as well as unknown NTs and their metabolites in a lab-based approach. The aim of this chapter is to provide an insight in the recent advances, challenges, and perspectives in the field of NTs analysis both from the on-site and the laboratory perspective.
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Affiliation(s)
- Ids B Lemmink
- Laboratory of Organic Chemistry, Wageningen University & Research, Wageningen, The Netherlands; Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands
| | - Leonie V Straub
- Laboratory of Organic Chemistry, Wageningen University & Research, Wageningen, The Netherlands; Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands
| | - Toine F H Bovee
- Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands
| | - Patrick P J Mulder
- Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University & Research, Wageningen, The Netherlands; School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin, P.R. China
| | - Gert Ij Salentijn
- Laboratory of Organic Chemistry, Wageningen University & Research, Wageningen, The Netherlands; Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands.
| | - Laura Righetti
- Laboratory of Organic Chemistry, Wageningen University & Research, Wageningen, The Netherlands; Wageningen Food Safety Research, Wageningen University & Research, Wageningen, The Netherlands.
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Liao L, Luo ZQ, Byeon JH, Park JH. Size-selective sampler combined with an immunochromatographic assay for the rapid detection of airborne Legionella pneumophila. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172085. [PMID: 38554967 DOI: 10.1016/j.scitotenv.2024.172085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/04/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
Airborne biological aerosols (also called bioaerosols) are found in various environmental and occupational settings. Among these, pathogenic bioaerosols can cause diseases such as legionellosis, influenza, measles, and tuberculosis. To prevent or minimize people's exposure to these pathogenic bioaerosols in the field, a rapid detection method is required. In this study, a size-selective bioaerosol (SSB) sampler was combined with the immunochromatographic assay (ICA). The SSB sampler can collect bioaerosols on the sampling swab and the lateral flow test kit used in ICA can rapidly detect the pathogens in bioaerosols collected on the swab. Before testing the combined method, the lower limit of detection (LOD) of the lateral flow test kit was determined. Legionella pneumophila (L. pneumophila) was used as a target pathogen. The results show that at least 1.3 × 103L. pneumophila cells are required to be detected by the lateral flow test kit. To test the developed method, L. pneumophila suspension was aerosolized in the sampling chamber and collected using two SSB samplers with different sampling times (10 and 20 min). The developed method could detect aerosolized L. pneumophila and also estimate the concentrations from the lower LOD, sampling time, and formation of a positive line on a test strip. When positive results were obtained from sampling for 10 min and 20 min, concentrations of respirable L. pneumophila were estimated ≥5.2 × 104 CFUresp/m3 and ≥2.6 × 104 CFUresp/m3, respectively. The conventional sampler Andersen impactor with colony counting was also used for comparison. In all cases, the estimated concentrations obtained by the developed method were higher than those obtained by the conventional method. These findings confirm that the developed method can overcome the limitations of conventional methods and eventually benefit environmental and occupational health by providing a better method for risk assessment.
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Affiliation(s)
- Li Liao
- School of Health Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Zhao-Qing Luo
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47906, USA
| | - Jeong Hoon Byeon
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Jae Hong Park
- School of Health Sciences, Purdue University, West Lafayette, IN 47906, USA.
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15
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Saidi LK, Md Rani ZZ, Sulaiman SA, Jamal R, Ismail A, Alim AA, Ayob SNSA, Dee CF, Hamzah AA, Abdul Murad NA. Development of DNA-Based Lateral Flow Assay for Detection of LDLR Gene Mutation for Familial Hypercholesterolemia. Malays J Med Sci 2024; 31:92-106. [PMID: 38984253 PMCID: PMC11229576 DOI: 10.21315/mjms2024.31.3.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2024] Open
Abstract
Background The techniques for detecting single nucleotide polymorphisms (SNP) require lengthy and complex experimental procedures and expensive instruments that may only be available in some laboratories. Thus, a deoxyribonucleic acid (DNA)-based lateral flow assay (LFA) was developed as a point-of-care test (POCT) diagnostic tool for genotyping. In this study, single nucleotide variation (E101K) in the low-density lipoprotein receptor (LDLR) gene leading to familial hypercholesterolemia (FH) was chosen as a model. Methods Hypercholesterolemic individuals (n = 103) were selected from the Malaysian Cohort project (UKM Medical Molecular Biology Institute) while the control samples were selected from the Biobank (UKM Medical Molecular Biology Institute). The DNA samples were isolated from whole blood. Polymerase chain reaction (PCR) amplification process was performed using bifunctional labelled primers specifically designed to correspond to the variant that differentiates wild-type and mutant DNA for visual detection on LFA. The variant was confirmed using Sanger sequencing, and the sensitivity and specificity of the LFA detection method were validated using the Agena MassARRAY® technique. Results Out of 103 hypercholesterolemic individuals, 5 individuals (4.8%) tested positive for E101K, LDLR mutation and the rest, including healthy control individuals, tested negative. This result was concordant with Sanger sequencing and Agena MassARRAY®. These five individuals could be classified as Definite FH, as the DNA diagnosis was confirmed. The sensitivity and specificity of the variant detection by LFA is 100% compared to results using the genotyping method using Agena MassARRAY®. Conclusion The developed LFA can potentially be used in the POC setting for detecting the E101K variant in the LDLR gene. This LFA can also be used to screen family members with E101K variant in the LDLR gene and is applicable for other SNP's detection.
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Affiliation(s)
- Lina Khalida Saidi
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Zam Zureena Md Rani
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Siti Aishah Sulaiman
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Rahman Jamal
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Aziah Ismail
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Kelantan, Malaysia
| | - Anis Amirah Alim
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Sharipah Nadzirah Syed Ahmad Ayob
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Selangor, Malaysia
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Perlis, Malaysia
| | - Chang Fu Dee
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Azrul Azlan Hamzah
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Selangor, Malaysia
| | - Nor Azian Abdul Murad
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Rial C, Hussain I, Hoff R, Tompkins S, Erickson D, Branen J, Giordano JO. Development and evaluation of a lateral flow-based portable optical system for determination of the pregnancy status of dairy cows. J Dairy Sci 2024:S0022-0302(24)00874-9. [PMID: 38825130 DOI: 10.3168/jds.2024-24899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/04/2024] [Indexed: 06/04/2024]
Abstract
Our objectives were to develop and evaluate an integrated system consisting of a lateral-flow immunoassay (LFIA) and an electronic portable imaging device for determination of pregnancy status of cows based on plasma concentrations of pregnancy-specific protein B (PSPB). Experiment 1 was conducted to test the performance of the LFIA for PSPB (PSPB-LFIA) whereas experiment 2 was conducted to evaluate the performance of the integrated system including both the LFIA and imaging device. The PSPB-LFIA strips were made of nitrocellulose membrane with polystreptavidin, anti-mouse antibody, Europium-anti-PSPB conjugates, and biotin-PSPB. After adding buffer and plasma in a 96-well plate, strips were dipped to initiate flow and were read in a fluorescence microscope to estimate PSPB concentrations based on the test-to-control line signal (T/C ratio). The T/C ratio of standards was linearly associated with PSPB (R2 = 0.99 in both experiments) concentrations. To test the ability to identify pregnant cows of the PSPB-LFIA only or the integrated system, plasma samples were collected and transrectal ultrasonography (TUS) was conducted 29 to 35 d post AI in lactating Holstein cows (Experiment 1: n = 83; Experiment 2: n = 205). A cow was considered pregnant (Preg) if concentrations of PSPB in plasma obtained by ELISA were ≥2 ng/mL or if an embryo was visible by TUS. In Experiment 1, the accuracy of the PSPB-LFIA compared with ELISA was 92.7% (91.2% Se; 96.1% Sp; 98.1% PPV; 83.3% NPV) and compared with TUS was 90.4% (100% Se; 78.9% Sp; 84.9% PPV; 100% NPV). The agreement between LFIA and ELISA (kappa = 0.84; 95%CI 0.71-0.96) or LFIA and TUS (kappa = 0.80; 95%CI 0.67-0.93) as methods to classify cows as Preg or Non-Preg was high. In Experiment 2, the accuracy of the PSPB-LFIA compared with ELISA was 96.1% (93.8% Se; 100% Sp; 100% PPV; 90.5% NPV) and compared with TUS was 92.2% (99.0% Se; 84.7% Sp; 87.6% PPV; 98.8% NPV). The agreement between LFIA and ELISA (kappa = 0.92; 95%CI 0.86-0.97) or LFIA and TUS (kappa = 0.84; 95%CI 0.77-0.92) as methods to classify cows as Preg or Non-Preg was high. We conclude that a system integrating a fluorescence-based LFIA and an optical reader was effective for classifying cows as pregnant or not pregnant based on estimations of plasma concentrations of PSPB. This novel system serves as a platform for further development of on-farm pregnancy testing tools based on measurement of biomarkers of pregnancy in bodily fluids of cattle.
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Affiliation(s)
- C Rial
- Department of Animal Science, Cornell University, Ithaca, NY
| | - I Hussain
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY
| | - R Hoff
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY
| | - S Tompkins
- Department of Animal Science, Cornell University, Ithaca, NY
| | - D Erickson
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY
| | | | - J O Giordano
- Department of Animal Science, Cornell University, Ithaca, NY.
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He K, Ye Y, Liu S, Yuan P, Sun W, Tang J. Polylevodopa nanoplatform for lateral flow immunochromatography assay of SARS-CoV-2 and influenza A virus. Biochem Biophys Res Commun 2024; 709:149821. [PMID: 38537597 DOI: 10.1016/j.bbrc.2024.149821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/13/2024]
Abstract
At the end of 2019, an unprecedented outbreak of novel coronavirus pneumonia ravaged the global landscape, inflicting profound harm upon society. Following numerous cycles of transmission, we find ourselves in an epoch where the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coexists alongside influenza viruses (Flu A). Swift and accurate diagnosis of SARS-CoV-2 and Flu A is imperative to stem the spread of these maladies and administer appropriate treatment. Presently, colloidal gold-based lateral flow immunoassays (Au-LFIAs) constructed through electrostatic adsorption are beset by challenges such as diminished sensitivity and feeble binding stability. In this context, we propose the adoption of black polylevodopa nanoparticles (PLDA NPs) featuring abundant carboxyl groups as labeling nanomaterials in LFIA to bolster the stability and sensitivity of SARS-CoV-2 antigens and influenza A virus identifications. The engineered PLDA-LFIAs exhibit the capacity to detect SARS-CoV-2 and Flu A within 30 min, boasting a detection threshold of 5 pg/ml for the SARS-CoV-2 antigen and 0.1 ng/ml for the Flu A H1N1 antigen, thereby underscoring their heightened sensitivity relative to Au-LFIAs. These PLDA-LFIAs hold promise for the early detection of SARS-CoV-2 and Flu A, underscoring the potential of PLDA NPs as a discerning labeling probe to heighten the sensitivity of LFIA across diverse applications.
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Affiliation(s)
- Kangsong He
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China
| | - Yabing Ye
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China
| | - Shang Liu
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China
| | - Pengcheng Yuan
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China
| | - Wenjing Sun
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China.
| | - Jianbin Tang
- Zhejiang Key Laboratory of Smart BioMaterials, College of Chemical and Biological Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310058, China.
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Kajdanek A, Kluska M, Matusiak R, Kazimierczak J, Dastych J. A Rapid and Inexpensive PCR Test for Mastitis Diagnosis Based on NGS Data. Pathogens 2024; 13:423. [PMID: 38787275 DOI: 10.3390/pathogens13050423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/02/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024] Open
Abstract
Mastitis is a common mammary gland disease of dairy cattle caused by a wide range of organisms including bacteria, fungi and algae. Mastitis contributes to economic losses of dairy farms due to reduced yield and poor quality of milk. Since the correct identification of pathogens responsible for the development of mastitis is crucial to the success of treatment, it is necessary to develop a quick and accurate test to distinguish the main pathogens causing this disease. In this paper, we describe the development of a test based on the multiplex polymerase chain reaction (PCR) method allowing for the identification of Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis and Staphylococcus aureus. When creating our test, we relied on the results from new generation sequencing (NGS) for accurate determination of species affiliation. The multiplex PCR test was verified on 100 strains including veterinary samples, ATCC and Polish Collection of Microorganisms (PCM) reference strains. The obtained results indicate that this test is accurate and displays high specificity. It may serve as a valuable molecular tool for the detection of major mastitis pathogens.
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Sun Y, Li X, Lin M, Yang G, He H, Bao Y, Li F, Jiang T. An innovative immunochromatographic assay employing Pt-Pd bimetallic nanoparticles as labels for the detection of foot-and-mouth disease virus serotype O. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1235:124043. [PMID: 38341952 DOI: 10.1016/j.jchromb.2024.124043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/17/2024] [Accepted: 02/01/2024] [Indexed: 02/13/2024]
Abstract
OBJECTIVE We created a novel, high sensitivity immunochromatographic assay that allows for clear and precise quantitative analysis by employing innovative bimetallic nanoparticles with peroxide-like activity as markers for the preparation of the test strip. METHODS Initially, we synthesized Pt-Pd bimetallic nanoparticles through the reduction of K2PtCl4 and Na2PdCl4 using ascorbic acid (AA) in an ultrasonic water bath. These bimetallic nanoparticles were then utilized to label purified antigens from the foot-and-mouth disease virus (FMDV) type O (FMDV-146S), resulting in the creation of antigen-captured nanomarkers. Upon completion of the antigen-antibody reaction, we introduced a color-developing agent (3,3',5,5'-tetramethylbenzidine) for cascade amplification, significantly enhancing detection sensitivity while ensuring clear and accurate quantitative analysis. RESULTS The quantitative detection sensitivity achieved was 1:28/test, with a linear range spanning from 1:26 ∼ 1:29 /test. For FMDV type O positive serum, the detection sensitivity reached 96.7 %. Furthermore, this method exhibited a 95 % detection sensitivity for FMDV negative serum, FMDV type A and type AsiaⅠ positive sera, as well as sera positive for other common viral diseases in animals. In comparison to the OIE-recommended LPB-ELISA, this approach displayed higher correlation (correlation coefficient = 0.909). Innovation was at the core of establishing this immunochromatographic assay based on Pt-Pd bimetallic nanoparticles for the detection of FMDV antibodies. CONCLUSION The findings revealed a striking 24-fold improvement in sensitivity when compared to colloidal gold, accompanied by a strong correlation coefficient (R2 > 0.9). This suggests a robust and consistent linear association in the results. This method represents a significant advancement in the field of rapid immunochromatographic assays, offering a promising alternative application for bimetallic nanoparticles.
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Affiliation(s)
- Yanyan Sun
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Xin Li
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Mi Lin
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China; Key Laboratory of Animal Virology of Ministry of Agriculture, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Guang Yang
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Huali He
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Yanfang Bao
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Fengsong Li
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China
| | - Tao Jiang
- Lanzhou Shouyan Biotechnology Co., Ltd, Lanzhou 730070, China; Key Laboratory of Animal Virology of Ministry of Agriculture, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
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20
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Schlotheuber LJ, Lüchtefeld I, Eyer K. Antibodies, repertoires and microdevices in antibody discovery and characterization. LAB ON A CHIP 2024; 24:1207-1225. [PMID: 38165819 PMCID: PMC10898418 DOI: 10.1039/d3lc00887h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/01/2023] [Indexed: 01/04/2024]
Abstract
Therapeutic antibodies are paramount in treating a wide range of diseases, particularly in auto-immunity, inflammation and cancer, and novel antibody candidates recognizing a vast array of novel antigens are needed to expand the usefulness and applications of these powerful molecules. Microdevices play an essential role in this challenging endeavor at various stages since many general requirements of the overall process overlap nicely with the general advantages of microfluidics. Therefore, microfluidic devices are rapidly taking over various steps in the process of new candidate isolation, such as antibody characterization and discovery workflows. Such technologies can allow for vast improvements in time-lines and incorporate conservative antibody stability and characterization assays, but most prominently screenings and functional characterization within integrated workflows due to high throughput and standardized workflows. First, we aim to provide an overview of the challenges of developing new therapeutic candidates, their repertoires and requirements. Afterward, this review focuses on the discovery of antibodies using microfluidic systems, technological aspects of micro devices and small-scale antibody protein characterization and selection, as well as their integration and implementation into antibody discovery workflows. We close with future developments in microfluidic detection and antibody isolation principles and the field in general.
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Affiliation(s)
- Luca Johannes Schlotheuber
- ETH Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, D-CHAB, ETH Zürich, 8093 Zürich, Switzerland.
| | - Ines Lüchtefeld
- ETH Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, D-CHAB, ETH Zürich, 8093 Zürich, Switzerland.
- ETH Laboratory for Tumor and Stem Cell Dynamics, Institute of Molecular Health Sciences, D-BIOL, ETH Zürich, 8093 Zürich, Switzerland
| | - Klaus Eyer
- ETH Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, D-CHAB, ETH Zürich, 8093 Zürich, Switzerland.
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21
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Cavalera S, Di Nardo F, Serra T, Testa V, Baggiani C, Rosati S, Colitti B, Brienza L, Colasanto I, Nogarol C, Cosseddu D, Guiotto C, Anfossi L. A semi-quantitative visual lateral flow immunoassay for SARS-CoV-2 antibody detection for the follow-up of immune response to vaccination or recovery. J Mater Chem B 2024; 12:2139-2149. [PMID: 38315042 DOI: 10.1039/d3tb02895j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The lateral flow immunoassay (LFIA) technique is largely employed for the point-of-care detection of antibodies especially for revealing the immune response in serum. Visual LFIAs usually provide the qualitative yes/no detection of antibodies, while quantification requires some equipment, making the assay more expensive and complicated. To achieve visual semi-quantification, the alignment of several lines (made of the same antigen) along a LFIA strip has been proposed. The numbering of the reacting lines has been used to correlate with the quantity of some biomarkers in serum. Here, we designed the first semiquantitative LFIA for detecting antibodies and applied it to classify the immune response to SARS-CoV-2 raised by vaccination or natural infection. We used a recombinant spike receptor-binding domain (RBD) as the specific capture reagent to draw two test lines. The detection reagent was selected among three possible ligands that are able to bind to anti-spike human antibodies: the same RBD, staphylococcal protein A, and anti-human immunoglobulin G antibodies. The most convenient detector, adsorbed on gold nanoparticles, was chosen based on the highest correlation with an antibody titre of 171 human sera, measured by a reference serological method, and was the RBD (Spearman's rho = 0.84). Incorporated into the semiquantitative LFIA, it confirmed the ability to discriminate high- and low-titre samples and to classify them into two classes (Dunn's test, P < 0.05). The proposed approach enabled the semiquantification of the immune response to SARS-CoV-2 by the unaided eye observation, thus overcoming the requirement of costly and complicated equipment, and represents a general strategy for the development of semiquantitative serological LFIAs.
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Affiliation(s)
- Simone Cavalera
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
| | - Fabio Di Nardo
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
| | - Thea Serra
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
| | - Valentina Testa
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
| | - Claudio Baggiani
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
| | - Sergio Rosati
- Department of Veterinary Science, University of Turin, Largo Braccini 2, Grugliasco (TO), Italy
| | - Barbara Colitti
- Department of Veterinary Science, University of Turin, Largo Braccini 2, Grugliasco (TO), Italy
| | - Ludovica Brienza
- Department of Veterinary Science, University of Turin, Largo Braccini 2, Grugliasco (TO), Italy
| | - Irene Colasanto
- Department of Veterinary Science, University of Turin, Largo Braccini 2, Grugliasco (TO), Italy
| | - Chiara Nogarol
- In3diagnostic srl, Largo Braccini 2, Grugliasco (TO), Italy
| | - Domenico Cosseddu
- A.O. Ordine Mauriziano, Ospedale Umberto I di Torino, Via Magellano 1, Turin, Italy
| | - Cristina Guiotto
- A.O. Ordine Mauriziano, Ospedale Umberto I di Torino, Via Magellano 1, Turin, Italy
| | - Laura Anfossi
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, Turin, Italy.
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22
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Mirhosseini S, Nasiri AF, Khatami F, Mirzaei A, Aghamir SMK, Kolahdouz M. A digital image colorimetry system based on smart devices for immediate and simultaneous determination of enzyme-linked immunosorbent assays. Sci Rep 2024; 14:2587. [PMID: 38297148 PMCID: PMC10830485 DOI: 10.1038/s41598-024-52931-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/25/2024] [Indexed: 02/02/2024] Open
Abstract
Standard enzyme-linked immunosorbent assays based on microplates are frequently utilized for various molecular sensing, disease screening, and nanomedicine applications. Comparing this multi-well plate batched analysis to non-batched or non-standard testing, the diagnosis expenses per patient are drastically reduced. However, the requirement for rather big and pricey readout instruments prevents their application in environments with limited resources, especially in the field. In this work, a handheld cellphone-based colorimetric microplate reader for quick, credible, and novel analysis of digital images of human cancer cell lines at a reasonable price was developed. Using our in-house-developed app, images of the plates are captured and sent to our servers, where they are processed using a machine learning algorithm to produce diagnostic results. Using FDA-approved human epididymis protein of ovary IgG (HE4), prostate cancer cell line (PC3), and bladder cancer cell line (5637) ELISA tests, we successfully examined this mobile platform. The accuracies for the HE4, PC3, and 5637 tests were 93%, 97.5%, and 97.2%, respectively. By contrasting the findings with the measurements made using optical absorption EPOCH microplate readers and optical absorption Tecan microplate readers, this approach was found to be accurate and effective. As a result, digital image colorimetry on smart devices offered a practical, user-friendly, affordable, precise, and effective method for quickly identifying human cancer cell lines. Thus, healthcare providers might use this portable device to carry out high-throughput illness screening, epidemiological investigations or monitor vaccination campaigns.
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Affiliation(s)
- Shaghayegh Mirhosseini
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Aryanaz Faghih Nasiri
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Fatemeh Khatami
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Akram Mirzaei
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammadreza Kolahdouz
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran.
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23
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Ferreira A, Aversa-Marnai M, Villarino A, Silva-Álvarez V. Innate immune and chronic heat stress responses in sturgeons: Advances and insights from studies on Russian sturgeons. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2023; 5:100121. [PMID: 37964807 PMCID: PMC10641160 DOI: 10.1016/j.fsirep.2023.100121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/30/2023] [Accepted: 10/19/2023] [Indexed: 11/16/2023] Open
Abstract
Chronic stress deteriorates the immune function of fish, thereby increasing their vulnerability to infections. However, the molecular and cellular mechanisms underlying stress-mediated immunosuppression and infection susceptibility in fish remain largely unknown. Understanding these mechanisms will contribute to improving fish welfare and their farm production. Herein, we review the challenges of sturgeon aquaculture in subtropical countries, where current climate change has giving rise to significant temperature increments during summer. This leads to the exposure of fish to stressful conditions during these months. Chronic heat stress deserves attention considering the rapid warming rate of the planet. It is already affecting wild fish populations, with disastrous consequences for sturgeons, which are one of the most endangered fish species in the world. In this context, we discuss the most recent advances through the studies on the effects of chronic heat stress on the innate immune components of sturgeons. To this end, we summarise the findings of studies focusing on the aquaculture of Russian sturgeons and observations made on other Acipenser species. Special attention is given to acute-phase proteins, as they might be valuable biomarkers of heat stress and infection, with applicability in monitoring the fish health status in farms.
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Affiliation(s)
- A.M. Ferreira
- Unidad Asociada de Inmunología, Instituto de Química Biológica, Facultad de Ciencias, Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - M. Aversa-Marnai
- Área Inmunología, Departamento de Biociencias, Facultad de Química, Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - A. Villarino
- Sección Bioquímica, Instituto de Biología, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - V. Silva-Álvarez
- Área Inmunología, Departamento de Biociencias, Facultad de Química, Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
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24
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Silva GBL, Campos FV, Guimarães MCC, Oliveira JP. Recent Developments in Lateral Flow Assays for Salmonella Detection in Food Products: A Review. Pathogens 2023; 12:1441. [PMID: 38133324 PMCID: PMC10747123 DOI: 10.3390/pathogens12121441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/22/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
Salmonellosis is a disease transmitted by contaminated food and is one of the leading causes of infections worldwide, making the early detection of Salmonella of crucial importance for public health. However, current detection methods are laborious and time-consuming, thus impacting the entire food supply chain and leading to production losses and economic sanctions. To mitigate these issues, a number of different biosensors have been developed, including lateral flow assays (LFAs), which have emerged as valuable tools in pathogen detection due to their portability, ease of use, time efficiency, and cost effectiveness. The performance of LFAs has been considerably enhanced by the development of new nanomaterials over the years. In this review, we address the principles and formats of the assay and discuss future prospects and challenges with an emphasis on LFAs developed for the detection of different Salmonella serovars in food.
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Affiliation(s)
| | | | | | - Jairo P. Oliveira
- Morphology Department, Health Sciences Center, Federal University of Espírito Santo, Av Marechal Campos 1468, Vitória 29040-090, Brazil; (G.B.L.S.); (F.V.C.); (M.C.C.G.)
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25
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Fu X, Wang Q, Ma B, Zhang B, Sun K, Yu X, Ye Z, Zhang M. Advances in Detection Techniques for the H5N1 Avian Influenza Virus. Int J Mol Sci 2023; 24:17157. [PMID: 38138987 PMCID: PMC10743243 DOI: 10.3390/ijms242417157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Avian influenza is caused by avian influenza virus infection; the H5N1 avian influenza virus is a highly pathogenic subtype, affecting poultry and human health. Since the discovery of the highly pathogenic subtype of the H5N1 avian influenza virus, it has caused enormous losses to the poultry farming industry. It was recently found that the H5N1 avian influenza virus tends to spread among mammals. Therefore, early rapid detection methods are highly significant for effectively preventing the spread of H5N1. This paper discusses the detection technologies used in the detection of the H5N1 avian influenza virus, including serological detection technology, immunological detection technology, molecular biology detection technology, genetic detection technology, and biosensors. Comparisons of these detection technologies were analyzed, aiming to provide some recommendations for the detection of the H5N1 avian influenza virus.
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Affiliation(s)
| | | | | | | | | | | | | | - Mingzhou Zhang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Science, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China; (X.F.); (Q.W.); (B.M.); (B.Z.); (K.S.); (X.Y.); (Z.Y.)
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26
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Duan Y, Liu F, Zhang C, Wang Y, Chen G. Screen and Optimization of an Aptamer for Alexandrium tamarense-A Common Toxin-Producing Harmful Alga. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2023; 25:935-950. [PMID: 37743437 DOI: 10.1007/s10126-023-10251-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/01/2023] [Indexed: 09/26/2023]
Abstract
Among all the paralytic shellfish toxins (PSTs)-producing algae, Alexandrium tamarense is one of the most widespread harmful species posing a serious threat to marine resources and human health. Therefore, it is extremely important to establish a rapid and accurate monitoring method for A. tamarense that can provide early warnings of harmful algal blooms (HABs) caused by this alga and limit the contamination due to PSTs. In this study, an ssDNA library was first obtained by whole cell systematic evolution of ligands by exponential enrichment after 18 consecutive rounds of iterative screening. After sequencing in combination with subsequent multiple alignment of sequences and secondary structure simulation, the library could be classified into 2 families, namely, Family1 and Family2, according to sequence similarity. Flow cytometry was used to test the affinity and cross-reactivity of Ata19, Ata6, Ata25 and Ata29 belonging to Family2. Ata19 was selected to be modified by truncation, through which a new resultant aptamer named as Ata19-1-1 was obtained. Ata19-1-1 with a KD of 75.16 ± 11.10 nM displayed a much higher affinity than Ata19. The specificity test showed that Ata19-1-1 has the same discrimination ability as Ata19 and can at least distinguish the target microalga from other microalgae. The observation under a fluorescence microscopy showed that the A. tamarense cells labeled with Ata19-1-1 are exhibiting bright green fluorescence and could be easily identified, factually confirming the binding of the aptamer with target cells. In summary, the aptamer Ata19-1-1 produced in this study may serve as an ideal molecular recognition element for A. tamarense, which has the potential to be developed into a novel detection method for this harmful alga in the future.
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Affiliation(s)
- Yu Duan
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, People's Republic of China
- School of Environment, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Fuguo Liu
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, People's Republic of China
- School of Environment, Harbin Institute of Technology, Harbin, 150001, People's Republic of China
| | - Chunyun Zhang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, People's Republic of China.
| | - Yuanyuan Wang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, People's Republic of China
| | - Guofu Chen
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, People's Republic of China.
- School of Environment, Harbin Institute of Technology, Harbin, 150001, People's Republic of China.
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27
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Wang Y, Chen Y, Tang Y, Wang Y, Gao S, Yang L, Wang P. A recombinase polymerase amplification and Pyrococcus furiosus Argonaute combined method for ultra-sensitive detection of white spot syndrome virus in shrimp. JOURNAL OF FISH DISEASES 2023; 46:1357-1365. [PMID: 37635423 DOI: 10.1111/jfd.13853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/29/2023]
Abstract
White spot disease (WSD) in shrimp is an acute infectious disease caused by white spot syndrome virus (WSSV). WSD has seriously threatened the security of shrimp farming, causing huge economic losses worldwide. As there is currently no effective treatment for WSD, developing early detection technologies for WSSV is of great significance for the prevention. In this study, we have established a detection method for WSSV using a combination of recombinase polymerase amplification (RPA) and Pyrococcus furiosus Argonaute (PfAgo). We have achieved a detection sensitivity of single copy per reaction, which is more sensitive than the previously reported detection methods. Additionally, we have demonstrated high specificity. The entire detection process can be completed within 75 min without the need for precise thermal cyclers, making it suitable for on-site testing. The fluorescence signal generated by the reaction can be quantified using a portable fluorescence detector or observed with the naked eye under a blue light background. This study provides an ultrasensitive on-site detection method for WSSV in shrimp aquaculture and expands the application of PfAgo in the field of aquatic disease diagnosis.
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Affiliation(s)
- Yu Wang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Yukang Chen
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Yixin Tang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Yue Wang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Song Gao
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Lihong Yang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Ocean University, Lianyungang, China
| | - Pei Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, China
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28
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Vealan K, Joseph N, Alimat S, Karumbati AS, Thilakavathy K. Lateral flow assay: a promising rapid point-of-care testing tool for infections and non-communicable diseases. ASIAN BIOMED 2023; 17:250-266. [PMID: 38161347 PMCID: PMC10754503 DOI: 10.2478/abm-2023-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The point-of-care testing (POCT) approach has established itself as having remarkable importance in diagnosing various infectious and non-communicable diseases (NCDs). The POCT approach has succeeded in meeting the current demand for having diagnostic strategies that can provide fast, sensitive, and highly accurate test results without involving complicated procedures. This has been accomplished by introducing rapid bioanalytical tools or biosensors such as lateral flow assays (LFAs). The production cost of these tools is very low, allowing developing countries with limited resources to utilize them or produce them on their own. Thus, their use has grown in various fields in recent years. More importantly, LFAs have created the possibility for a new era of incorporating nanotechnology in disease diagnosis and have already attained significant commercial success worldwide, making POCT an essential approach not just for now but also for the future. In this review, we have provided an overview of POCT and its evolution into the most promising rapid diagnostic approach. We also elaborate on LFAs with a special focus on nucleic acid LFAs.
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Affiliation(s)
- Kumaravel Vealan
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang43400, Malaysia
| | - Narcisse Joseph
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang43400, Malaysia
| | - Sharizah Alimat
- Department of Chemistry Malaysia, Ministry of Science, Technology and Innovation, Petaling Jaya46661, Selangor, Malaysia
| | - Anandi S. Karumbati
- Centre for Chemical Biology and Therapeutics, Institute for Stem Cell Science and Regenerative Medicine, Bangalore560065, India
| | - Karuppiah Thilakavathy
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, UPM Serdang43400, Malaysia
- Malaysian Research Institute on Ageing (MyAgeing), Universiti Putra Malaysia, UPM Serdang43400, Selangor, Malaysia
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29
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Goncharov A, Joung HA, Ghosh R, Han GR, Ballard ZS, Maloney Q, Bell A, Aung CTZ, Garner OB, Carlo DD, Ozcan A. Deep Learning-Enabled Multiplexed Point-of-Care Sensor using a Paper-Based Fluorescence Vertical Flow Assay. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300617. [PMID: 37104829 DOI: 10.1002/smll.202300617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Multiplexed computational sensing with a point-of-care serodiagnosis assay to simultaneously quantify three biomarkers of acute cardiac injury is demonstrated. This point-of-care sensor includes a paper-based fluorescence vertical flow assay (fxVFA) processed by a low-cost mobile reader, which quantifies the target biomarkers through trained neural networks, all within <15 min of test time using 50 µL of serum sample per patient. This fxVFA platform is validated using human serum samples to quantify three cardiac biomarkers, i.e., myoglobin, creatine kinase-MB, and heart-type fatty acid binding protein, achieving less than 0.52 ng mL-1 limit-of-detection for all three biomarkers with minimal cross-reactivity. Biomarker concentration quantification using the fxVFA that is coupled to neural network-based inference is blindly tested using 46 individually activated cartridges, which shows a high correlation with the ground truth concentrations for all three biomarkers achieving >0.9 linearity and <15% coefficient of variation. The competitive performance of this multiplexed computational fxVFA along with its inexpensive paper-based design and handheld footprint makes it a promising point-of-care sensor platform that can expand access to diagnostics in resource-limited settings.
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Affiliation(s)
- Artem Goncharov
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Hyou-Arm Joung
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Rajesh Ghosh
- Bioengineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Gyeo-Re Han
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Zachary S Ballard
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Quinn Maloney
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
| | - Alexandra Bell
- Chemistry & Biochemistry Department, University of California, Los Angeles, CA, 90095, USA
| | - Chew Tin Zar Aung
- Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA, 90095, USA
| | - Omai B Garner
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, CA, 90095, USA
| | - Dino Di Carlo
- Bioengineering Department, University of California, Los Angeles, CA, 90095, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles, CA, 90095, USA
| | - Aydogan Ozcan
- Electrical & Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA
- Bioengineering Department, University of California, Los Angeles, CA, 90095, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles, CA, 90095, USA
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Chung MC, Liu YQ, Jian BL, Xu SQ, Syu JJ, Lee CF, Tan KT. Affinity-Switchable Interaction of Biotin and Streptavidin for the Signal-ON Detection of Small Molecules. ACS Sens 2023; 8:4226-4232. [PMID: 37871282 DOI: 10.1021/acssensors.3c01572] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Lateral flow assay (LFA) based on gold nanoparticles (AuNPs) is a widely used analytical device for the rapid analysis of environmental hazards and biomarkers. Typically, a sandwich-type format is used for macromolecule detection, in which the appearance of a red test line indicates a positive result (Signal-ON). In contrast, small molecule detection usually relies on a competitive assay, where the absence of a test line indicates positive testing (Signal-OFF). However, such a "Signal-OFF" reading is usually detected within a narrower dynamic range and tends to generate false-negative signals at a low concentration. Moreover, inconsistent readings between macromolecule and small molecule testing might lead to misinterpretation when used by nonskilled individuals. Herein, we report a "Signal-ON" small molecule competitive assay based on the sterically modulated affinity-switchable interaction of biotin and streptavidin. In the absence of a small molecule target, a large steric hindrance can be imposed on the biotin to prevent interaction with streptavidin. However, in the presence of the small molecule target, this steric effect is removed, allowing the biotin to bind to streptavidin and generate the desired test line. In this article, we demonstrate the selective detection of two small molecule drugs, sulfonamides and trimethoprim, using this simple and modular affinity-switchable lateral flow assay (ASLFA). We believe that this affinity-switchable approach can also be adapted in drug discovery and clinical diagnosis, where the competitive assay format is always used for the rapid analysis of small molecules.
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Affiliation(s)
- Min-Chi Chung
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
| | - Yun-Qiao Liu
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
| | - Bo-Lin Jian
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
| | - Shun-Qiang Xu
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
| | - Jhih-Jie Syu
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
| | - Chin-Fa Lee
- Department of Chemistry, National Chung Hsing University, Taichung ,Taiwan 402202, Republic of China
| | - Kui-Thong Tan
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, Taiwan 300044, Republic of China
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung ,Taiwan 80708, Republic of China
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31
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Zhao Z, Wang S, Dong Z, Fan Q, Lei R, Kuang R, Zhang Y. One-Step Reverse-Transcription Recombinase-Aided Amplification CRISPR/Cas12a-Based Lateral Flow Assay for Fast Field Screening and Accurate Differentiation of Four Major Tobamoviruses Infecting Tomato and Pepper. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37916776 DOI: 10.1021/acs.jafc.3c05268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Several tobamoviruses cause substantial economic losses to tomato and pepper crops globally, especially the pepper mild mosaic virus (PMMoV), tomato brown rugose fruit virus (ToBRFV), tomato mosaic virus (ToMV), and tomato mottle mosaic virus (ToMMV). A fast and accurate detection method is essential for virus identification. An all-in-one reaction method combining a one-step reverse-transcription recombinase-aided amplification (RT-RAA) and CRISPR/Cas12a-based lateral flow assay in one mixture was developed to rapidly screen and accurately differentiate among these four tobamoviruses for field detection in tomato and pepper plants. With a generic RT-RAA primer set and a mix of four specific crRNAs, along with a portable metal incubator and the use of a crude extraction method, this method screened for PMMoV, ToBRFV, ToMV, and ToMMV concurrently in less than 1 h, enabling field workers to take action immediately. The accurate differentiation of these four viruses could be achieved by later adding a single specific crRNA.
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Affiliation(s)
- Zhenxing Zhao
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Siyuan Wang
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Zheng Dong
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Qixuan Fan
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- State Key Laboratory of Agrobiotechnology and Key Laboratory of Pest Monitoring and Green Management-MOA, Department of Plant Pathology, China Agricultural University, 100193 Beijing, China
| | - Rong Lei
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Ruirui Kuang
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
- State Key Laboratory of Agrobiotechnology and Key Laboratory of Pest Monitoring and Green Management-MOA, Department of Plant Pathology, China Agricultural University, 100193 Beijing, China
| | - Yongjiang Zhang
- Chinese Academy of Inspection and Quarantine, Beijing 100176, China
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Wang M, Liu H, Fan K. Signal Amplification Strategy Design in Nanozyme-Based Biosensors for Highly Sensitive Detection of Trace Biomarkers. SMALL METHODS 2023; 7:e2301049. [PMID: 37817364 DOI: 10.1002/smtd.202301049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/12/2023] [Indexed: 10/12/2023]
Abstract
Nanozymes show great promise in enhancing disease biomarker sensing by leveraging their physicochemical properties and enzymatic activities. These qualities facilitate signal amplification and matrix effects reduction, thus boosting biomarker sensing performance. In this review, recent studies from the last five years, concentrating on disease biomarker detection improvement through nanozyme-based biosensing are examined. This enhancement primarily involves the modulations of the size, morphology, doping, modification, electromagnetic mechanisms, electron conduction efficiency, and surface plasmon resonance effects of nanozymes for increased sensitivity. In addition, a comprehensive description of the synthesis and tuning strategies employed for nanozymes has been provided. This includes a detailed elucidation of their catalytic mechanisms in alignment with the fundamental principles of enhanced sensing technology, accompanied by the presentation of quantitatively analyzed results. Moreover, the diverse applications of nanozymes in strip sensing, colorimetric sensing, electrochemical sensing, and surface-enhanced Raman scattering have been outlined. Additionally, the limitations, challenges, and corresponding recommendations concerning the application of nanozymes in biosensing have been summarized. Furthermore, insights have been offered into the future development and outlook of nanozymes for biosensing. This review aims to serve not only as a reference for enhancing the sensitivity of nanozyme-based biosensors but also as a catalyst for exploring nanozyme properties and their broader applications in biosensing.
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Affiliation(s)
- Mengting Wang
- Guangdong Provincial Key Laboratory of Urology, Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou Institute of Urology, Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Hongxing Liu
- Guangdong Provincial Key Laboratory of Urology, Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou Institute of Urology, Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
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Natarajan S, Priye A. Enhancing the Sensitivity of Lateral Flow Assay with Europium Nanoparticles for Accurate Human IgG Quantification. MICROMACHINES 2023; 14:1993. [PMID: 38004850 PMCID: PMC10673117 DOI: 10.3390/mi14111993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/22/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023]
Abstract
Accurate quantification of immunoglobulin G (IgG) levels is vital for understanding immune status and diagnosing various medical conditions. Lateral flow assays (LFAs) offer rapid and convenient diagnostic tools, but their sensitivity has been a limitation. Our research introduces a refined method incorporating europium nanoparticles, enhancing both sensitivity and accuracy of LFAs in human IgG measurement. Utilizing a unique sandwich format, carboxylate-modified polystyrene Eu (III) chelate microparticles (CM-EUs) acted as the primary reporters. The concentrations of both detection and capture antibodies on the strip were optimized to bolster the LFA's quantitative performance. The subsequent calibration curve between the IgG concentration and the measured intensity ratio (VR) established the linearity and analytical sensitivity of our method with a high correlation coefficient (r = 0.99) and an impressively low limit of detection (LoD = 0.04 ng/mL). Our precision assessment, segmented into intra-assay and inter-assay evaluations, showcases the method's consistency and reproducibility. The LFA assay's stability was established by demonstrating its resistance to degradation and affirming its potential for extended storage without a dip in performance. The study's findings underscore the potential of this method to contribute to diagnostic medicine and improve patient care.
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Affiliation(s)
- Satheesh Natarajan
- Healthcare Technology Innovation Center, Indian Institute of Technology, Chennai 600113, India;
| | - Aashish Priye
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
- Digital Futures, University of Cincinnati, Cincinnati, OH 45221, USA
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Dey MK, Iftesum M, Devireddy R, Gartia MR. New technologies and reagents in lateral flow assay (LFA) designs for enhancing accuracy and sensitivity. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4351-4376. [PMID: 37615701 DOI: 10.1039/d3ay00844d] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Lateral flow assays (LFAs) are a popular method for quick and affordable diagnostic testing because they are easy to use, portable, and user-friendly. However, LFA design has always faced challenges regarding sensitivity, accuracy, and complexity of the operation. By integrating new technologies and reagents, the sensitivity and accuracy of LFAs can be improved while minimizing the complexity and potential for false positives. Surface enhanced Raman spectroscopy (SERS), photoacoustic techniques, fluorescence resonance energy transfer (FRET), and the integration of smartphones and thermal readers can improve LFA accuracy and sensitivity. To ensure reliable and accurate results, careful assay design and validation, appropriate controls, and optimization of assay conditions are necessary. Continued innovation in LFA technology is crucial to improving the reliability and accuracy of rapid diagnostic testing and expanding its applications to various areas, such as food testing, water quality monitoring, and environmental testing.
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Affiliation(s)
- Mohan Kumar Dey
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Maria Iftesum
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Ram Devireddy
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Manas Ranjan Gartia
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
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Le APH, Nguyen QL, Pham BH, Cao THM, Vo TV, Huynh K, Ha HTT. SALAD: Syringe-based Arduino-operated Low-cost Antibody Dispenser. HARDWAREX 2023; 15:e00455. [PMID: 37497344 PMCID: PMC10366588 DOI: 10.1016/j.ohx.2023.e00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 06/05/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023]
Abstract
Lateral Flow Assays (LFA) have been one of the most widely adopted technologies in clinical diagnosis over recent years, especially during the COVID-19 pandemic, due to their feasibility, compactness, and rapid readout. However, the precise dispensing of antibodies-a key part of the fabrication process-requires costly line dispenser equipment, which poses a challenge to researchers with limited budgets. This study aims to resolve this key issue by introducing a Syringe-based Arduino-operated Low-cost Antibody Dispenser (SALAD). By utilizing a microneedle, stepper motor-driven syringe pump, and conveyor belt, SALAD can form micro-droplets to create an even band of antibodies. Our evaluation results showed comparable performance between SALAD and a commercialized model - Claremont ALFRD, with SALAD exceeding in affordability and feasibility. SALAD yielded an even signal, uniform bandwidth, and low background noise, yet optimization in the conveyor belt should be considered to enhance stability. With a low manufacturing cost ($200.61) compared to the commercialized models, our model is expected to provide an affordable approach for LFA researchers.
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Affiliation(s)
- Anh Phuc Hoang Le
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Quang Lam Nguyen
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Bao Hoai Pham
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Thien Hoang Minh Cao
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Toi Van Vo
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Khon Huynh
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
| | - Huong Thi Thanh Ha
- School of Biomedical Engineering, International University, Ho Chi Minh City, Viet Nam
- Vietnam National University, Ho Chi Minh City, Viet Nam
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Kwon Y, Kim D, Kim S. Quantitative injection strip platform using water-soluble paper and magnet based on a lateral flow assay. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4168-4178. [PMID: 37577848 DOI: 10.1039/d3ay01021j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Quantitative analysis for lateral flow immunoassay (LFA) strips was conducted continuously. Quantitative analysis means measuring concentration, which represents the number of molecules per unit volume. In this study, we designed a quantitative injection (QI) strip by modifying the structure of general LFA strips to inject the same unit volume. To achieve the injection of the same unit volume, we used water-soluble paper and magnet. In addition, the QI strip was fabricated to enable the physical separation of the gold conjugate pad from the nitrocellulose membrane (NC membrane) at the optimized time after sample injection. The optimized time refers to the time from the point at which the sample started flowing on the NC membrane to the point at which the strip was separated. At the samples of same concentration, the LFA strip increases detection signals as the volume of injected sample increases. In contrast to the LFA strip, the QI strip maintained consistent detection signals even with increasing volume of injected sample. Furthermore, the QI strip demonstrated an 11-fold lower deviation compared to the LFA strip. These results are attributed to the separation function of the QI strip. In conclusion, the QI strip is more suitable for quantitative analysis compared to the LFA strip due to the same unit volume without additional equipment such as a pipette. This study is expected to contribute to the development of user-friendly POCT and strip-based quantitative analysis.
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Affiliation(s)
- Yewon Kwon
- Department of Bionanotechnology, Gachon University, Seongnam 13120, Republic of Korea.
| | - Dami Kim
- Philmedi R&D Center, Philmedi Incorporation, 33, Sangimakol-ro, 62beon-gil, Jungwon-gu, Seognam, 13211, Republic of Korea
| | - Sanghyo Kim
- Department of Bionanotechnology, Gachon University, Seongnam 13120, Republic of Korea.
- Philmedi R&D Center, Philmedi Incorporation, 33, Sangimakol-ro, 62beon-gil, Jungwon-gu, Seognam, 13211, Republic of Korea
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37
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Mousavi SM, Kalashgrani MY, Gholami A, Omidifar N, Binazadeh M, Chiang WH. Recent Advances in Quantum Dot-Based Lateral Flow Immunoassays for the Rapid, Point-of-Care Diagnosis of COVID-19. BIOSENSORS 2023; 13:786. [PMID: 37622872 PMCID: PMC10452855 DOI: 10.3390/bios13080786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/23/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023]
Abstract
The COVID-19 pandemic has spurred demand for efficient and rapid diagnostic tools that can be deployed at point of care to quickly identify infected individuals. Existing detection methods are time consuming and they lack sensitivity. Point-of-care testing (POCT) has emerged as a promising alternative due to its user-friendliness, rapidity, and high specificity and sensitivity. Such tests can be conveniently conducted at the patient's bedside. Immunodiagnostic methods that offer the rapid identification of positive cases are urgently required. Quantum dots (QDs), known for their multimodal properties, have shown potential in terms of combating or inhibiting the COVID-19 virus. When coupled with specific antibodies, QDs enable the highly sensitive detection of viral antigens in patient samples. Conventional lateral flow immunoassays (LFAs) have been widely used for diagnostic testing due to their simplicity, low cost, and portability. However, they often lack the sensitivity required to accurately detect low viral loads. Quantum dot (QD)-based lateral flow immunoassays have emerged as a promising alternative, offering significant advancements in sensitivity and specificity. Moreover, the lateral flow immunoassay (LFIA) method, which fulfils POCT standards, has gained popularity in diagnosing COVID-19. This review focuses on recent advancements in QD-based LFIA for rapid POCT COVID-19 diagnosis. Strategies to enhance sensitivity using QDs are explored, and the underlying principles of LFIA are elucidated. The benefits of using the QD-based LFIA as a POCT method are highlighted, and its published performance in COVID-19 diagnostics is examined. Overall, the integration of quantum dots with LFIA holds immense promise in terms of revolutionizing COVID-19 detection, treatment, and prevention, offering a convenient and effective approach to combat the pandemic.
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Affiliation(s)
- Seyyed Mojtaba Mousavi
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan;
| | - Masoomeh Yari Kalashgrani
- Biotechnology Research Center, Shiraz University of Medical Science, Shiraz 71468-64685, Iran; (M.Y.K.); (A.G.)
| | - Ahmad Gholami
- Biotechnology Research Center, Shiraz University of Medical Science, Shiraz 71468-64685, Iran; (M.Y.K.); (A.G.)
| | - Navid Omidifar
- Department of Pathology, School of Medicine, Shiraz University of Medical Sciences, Shiraz 71468-64685, Iran;
| | - Mojtaba Binazadeh
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71557-13876, Iran;
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan;
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38
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Bruijns B, Tiggelaar R, Knotter J, van Dam A. Use of Lateral Flow Assays in Forensics. SENSORS (BASEL, SWITZERLAND) 2023; 23:6201. [PMID: 37448049 DOI: 10.3390/s23136201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Already for some decades lateral flow assays (LFAs) are 'common use' devices in our daily life. Also, for forensic use LFAs are developed, such as for the analysis of illicit drugs and DNA, but also for the detection of explosives and body fluid identification. Despite their advantages, including ease-of-use, LFAs are not yet frequently applied at a crime scene. This review describes (academic) developments of LFAs for forensic applications, focusing on biological and chemical applications, whereby the main advantages and disadvantages of LFAs for the different forensic applications are summarized. Additionally, a critical review is provided, discussing why LFAs are not frequently applied within the forensic field and highlighting the steps that are needed to bring LFAs to the forensic market.
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Affiliation(s)
- Brigitte Bruijns
- Technologies for Criminal Investigations, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7513 AB Enschede, The Netherlands
- Police Academy, Arnhemseweg 348, 7334 AC Apeldoorn, The Netherlands
| | - Roald Tiggelaar
- NanoLab Cleanroom, MESA+ Institute, University of Twente, Drienerlolaan 5, 7500 AE Enschede, The Netherlands
| | - Jaap Knotter
- Technologies for Criminal Investigations, Saxion University of Applied Sciences, M.H. Tromplaan 28, 7513 AB Enschede, The Netherlands
- Police Academy, Arnhemseweg 348, 7334 AC Apeldoorn, The Netherlands
| | - Annemieke van Dam
- Department of Biomedical Engineering & Physics, Amsterdam University Medical Centers, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
- Department of Forensic Science, Amsterdam University of Applied Sciences, Tafelbergweg 51, 1105 BD Amsterdam, The Netherlands
- Methodology Research Program, Amsterdam Public Health Research Institute, Amsterdam University Medical Centers (UMC), Location AMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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Younes N, Yassine HM, Kourentzi K, Tang P, Litvinov D, Willson RC, Abu-Raddad LJ, Nasrallah GK. A review of rapid food safety testing: using lateral flow assay platform to detect foodborne pathogens. Crit Rev Food Sci Nutr 2023; 64:9910-9932. [PMID: 37350754 DOI: 10.1080/10408398.2023.2217921] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
The detrimental impact of foodborne pathogens on human health makes food safety a major concern at all levels of production. Conventional methods to detect foodborne pathogens, such as live culture, high-performance liquid chromatography, and molecular techniques, are relatively tedious, time-consuming, laborious, and expensive, which hinders their use for on-site applications. Recurrent outbreaks of foodborne illness have heightened the demand for rapid and simple technologies for detection of foodborne pathogens. Recently, Lateral flow assays (LFA) have drawn attention because of their ability to detect pathogens rapidly, cheaply, and on-site. Here, we reviewed the latest developments in LFAs to detect various foodborne pathogens in food samples, giving special attention to how reporters and labels have improved LFA performance. We also discussed different approaches to improve LFA sensitivity and specificity. Most importantly, due to the lack of studies on LFAs for the detection of viral foodborne pathogens in food samples, we summarized our recent research on developing LFAs for the detection of viral foodborne pathogens. Finally, we highlighted the main challenges for further development of LFA platforms. In summary, with continuing improvements, LFAs may soon offer excellent performance at point-of-care that is competitive with laboratory techniques while retaining a rapid format.
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Affiliation(s)
- Nadin Younes
- Biomedical Research Center, Qatar University, Doha, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Hadi M Yassine
- Biomedical Research Center, Qatar University, Doha, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Katerina Kourentzi
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas, USA
| | - Patrick Tang
- Department of Pathology, Sidra Medicine, Doha, Qatar
| | - Dmitri Litvinov
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas, USA
- Center for Integrated Bio & Nano Systems, University of Houston, Houston, Texas, USA
| | - Richard C Willson
- William A. Brookshire Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas, USA
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Laith J Abu-Raddad
- Infectious Disease Epidemiology Group, Weill Cornell Medicine-Qatar, Cornell University, Doha, Qatar
- World Health Organization Collaborating Centre for Disease Epidemiology Analytics on HIV/AIDS, Sexually Transmitted Infections, and Viral Hepatitis, Weill Cornell Medicine-Qatar, Cornell University, Doha, Qatar
- Department of Healthcare Policy and Research, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - Gheyath K Nasrallah
- Biomedical Research Center, Qatar University, Doha, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
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40
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Arumugam S, Ma J, Macar U, Han G, McAulay K, Ingram D, Ying A, Chellani HH, Chern T, Reilly K, Colburn DAM, Stanciu R, Duffy C, Williams A, Grys T, Chang SF, Sia SK. Rapidly adaptable automated interpretation of point-of-care COVID-19 diagnostics. COMMUNICATIONS MEDICINE 2023; 3:91. [PMID: 37353603 DOI: 10.1038/s43856-023-00312-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 06/01/2023] [Indexed: 06/25/2023] Open
Abstract
BACKGROUND Point-of-care diagnostic devices, such as lateral-flow assays, are becoming widely used by the public. However, efforts to ensure correct assay operation and result interpretation rely on hardware that cannot be easily scaled or image processing approaches requiring large training datasets, necessitating large numbers of tests and expert labeling with validated specimens for every new test kit format. METHODS We developed a software architecture called AutoAdapt POC that integrates automated membrane extraction, self-supervised learning, and few-shot learning to automate the interpretation of POC diagnostic tests using smartphone cameras in a scalable manner. A base model pre-trained on a single LFA kit is adapted to five different COVID-19 tests (three antigen, two antibody) using just 20 labeled images. RESULTS Here we show AutoAdapt POC to yield 99% to 100% accuracy over 726 tests (350 positive, 376 negative). In a COVID-19 drive-through study with 74 untrained users self-testing, 98% found image collection easy, and the rapidly adapted models achieved classification accuracies of 100% on both COVID-19 antigen and antibody test kits. Compared with traditional visual interpretation on 105 test kit results, the algorithm correctly identified 100% of images; without a false negative as interpreted by experts. Finally, compared to a traditional convolutional neural network trained on an HIV test kit, the algorithm showed high accuracy while requiring only 1/50th of the training images. CONCLUSIONS The study demonstrates how rapid domain adaptation in machine learning can provide quality assurance, linkage to care, and public health tracking for untrained users across diverse POC diagnostic tests.
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Affiliation(s)
- Siddarth Arumugam
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Jiawei Ma
- Department of Computer Science, Columbia University, New York, NY, 10027, USA
| | - Uzay Macar
- Department of Computer Science, Columbia University, New York, NY, 10027, USA
| | - Guangxing Han
- Department of Electrical Engineering, Columbia University, New York, NY, 10027, USA
| | - Kathrine McAulay
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ, 85054, USA
| | | | - Alex Ying
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | | | - Terry Chern
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Kenta Reilly
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ, 85054, USA
| | - David A M Colburn
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Robert Stanciu
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA
| | - Craig Duffy
- Safe Health Systems, Inc., Los Angeles, CA, 90036, USA
| | | | - Thomas Grys
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ, 85054, USA
| | - Shih-Fu Chang
- Department of Computer Science, Columbia University, New York, NY, 10027, USA.
- Department of Electrical Engineering, Columbia University, New York, NY, 10027, USA.
| | - Samuel K Sia
- Department of Biomedical Engineering, Columbia University, New York, NY, 10027, USA.
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41
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Brothers MC, Kornexl M, Guess B, Kim Y, Ott D, Martin JA, Regn D, Kim SS. Rapid and Simple Buffer Exchange Using Cation-Exchange Chromatography to Improve Point-of-Care Detection of Pharmacological Agents. BIOSENSORS 2023; 13:635. [PMID: 37366999 DOI: 10.3390/bios13060635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023]
Abstract
The current COVID-19 pandemic has highlighted the power, speed, and simplicity of point-of-care (POC) diagnostics. POC diagnostics are available for a wide range of targets, including both drugs of abuse as well as performance-enhancing drugs. For pharmacological monitoring, minimally invasive fluids such as urine and saliva are commonly sampled. However, false positives or negatives caused by interfering agents excreted in these matrices may confound results. For example, false positives have, in most cases, prevented the use of POC diagnostics for pharmacological agent detection; the consequence is that centralized labs are instead tasked to perform these screenings, resulting in significant delays between sampling and testing. Thus, a rapid, simple, and inexpensive methodology for sample purification is required for the POC to reach a field-deployable tool for the pharmacological human health and performance assessments. Buffer exchange is a simple, rapid approach to remove interfering agents, but has traditionally been difficult to perform on small pharmacological molecules. Therefore, in this communication, we use salbutamol, a performance-enhancing drug, as a case example to demonstrate the efficacy of ion-exchange chromatography as a technique to perform buffer exchange for charged pharmacological agents. This manuscript demonstrates the efficacy of this technique leveraging a commercial spin column to remove interfering agents found in simulant urines, such as proteins, creatinine, and urea, while retaining salbutamol. The utility and efficacy of the method was then confirmed in actual saliva samples. The eluent was then collected and run on the lateral flow assays (LFAs), improving the reported limit of detection by over 5× (new lower limit of detection of 10 ppb compared to reported 60 ppb by the manufacturer) while simultaneously removing noise due to background interfering agents.
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Affiliation(s)
- Michael C Brothers
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Maegan Kornexl
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Barlow Guess
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Yuri Kim
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
- UES Incorporation, Dayton, OH 45432, USA
| | - Darrin Ott
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Jennifer A Martin
- Materials and Manufacturing Directorate, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Dara Regn
- United States Air Force School of Aerospace Medicine, Wright Patterson Air Force Base, Dayton, OH 45433, USA
| | - Steve S Kim
- 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, OH 45433, USA
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42
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Kumar S, Ko T, Chae Y, Jang Y, Lee I, Lee A, Shin S, Nam MH, Kim BS, Jun HS, Seo S. Proof-of-Concept: Smartphone- and Cloud-Based Artificial Intelligence Quantitative Analysis System (SCAISY) for SARS-CoV-2-Specific IgG Antibody Lateral Flow Assays. BIOSENSORS 2023; 13:623. [PMID: 37366988 DOI: 10.3390/bios13060623] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023]
Abstract
Smartphone-based point-of-care testing (POCT) is rapidly emerging as an alternative to traditional screening and laboratory testing, particularly in resource-limited settings. In this proof-of-concept study, we present a smartphone- and cloud-based artificial intelligence quantitative analysis system (SCAISY) for relative quantification of SARS-CoV-2-specific IgG antibody lateral flow assays that enables rapid evaluation (<60 s) of test strips. By capturing an image with a smartphone camera, SCAISY quantitatively analyzes antibody levels and provides results to the user. We analyzed changes in antibody levels over time in more than 248 individuals, including vaccine type, number of doses, and infection status, with a standard deviation of less than 10%. We also tracked antibody levels in six participants before and after SARS-CoV-2 infection. Finally, we examined the effects of lighting conditions, camera angle, and smartphone type to ensure consistency and reproducibility. We found that images acquired between 45° and 90° provided accurate results with a small standard deviation and that all illumination conditions provided essentially identical results within the standard deviation. A statistically significant correlation was observed (Spearman correlation coefficient: 0.59, p = 0.008; Pearson correlation coefficient: 0.56, p = 0.012) between the OD450 values of the enzyme-linked immunosorbent assay and the antibody levels obtained by SCAISY. This study suggests that SCAISY is a simple and powerful tool for real-time public health surveillance, enabling the acceleration of quantifying SARS-CoV-2-specific antibodies generated by either vaccination or infection and tracking of personal immunity levels.
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Affiliation(s)
- Samir Kumar
- Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea
| | - Taewoo Ko
- Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea
| | | | - Yuyeon Jang
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Inha Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Ahyeon Lee
- Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea
| | - Sanghoon Shin
- Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea
| | - Myung-Hyun Nam
- Department of Laboratory Medicine, Anam Hospital, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Byung Soo Kim
- Department of Hematology, Anam Hospital, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Sungkyu Seo
- Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea
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43
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Guzman NA, Guzman DE, Blanc T. Advancements in portable instruments based on affinity-capture-migration and affinity-capture-separation for use in clinical testing and life science applications. J Chromatogr A 2023; 1704:464109. [PMID: 37315445 DOI: 10.1016/j.chroma.2023.464109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/16/2023]
Abstract
The shift from testing at centralized diagnostic laboratories to remote locations is being driven by the development of point-of-care (POC) instruments and represents a transformative moment in medicine. POC instruments address the need for rapid results that can inform faster therapeutic decisions and interventions. These instruments are especially valuable in the field, such as in an ambulance, or in remote and rural locations. The development of telehealth, enabled by advancements in digital technologies like smartphones and cloud computing, is also aiding in this evolution, allowing medical professionals to provide care remotely, potentially reducing healthcare costs and improving patient longevity. One notable POC device is the lateral flow immunoassay (LFIA), which played a major role in addressing the COVID-19 pandemic due to its ease of use, rapid analysis time, and low cost. However, LFIA tests exhibit relatively low analytical sensitivity and provide semi-quantitative information, indicating either a positive, negative, or inconclusive result, which can be attributed to its one-dimensional format. Immunoaffinity capillary electrophoresis (IACE), on the other hand, offers a two-dimensional format that includes an affinity-capture step of one or more matrix constituents followed by release and electrophoretic separation. The method provides greater analytical sensitivity, and quantitative information, thereby reducing the rate of false positives, false negatives, and inconclusive results. Combining LFIA and IACE technologies can thus provide an effective and economical solution for screening, confirming results, and monitoring patient progress, representing a key strategy in advancing diagnostics in healthcare.
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Affiliation(s)
- Norberto A Guzman
- Princeton Biochemicals, Inc., Princeton, NJ 08543, United States of America.
| | - Daniel E Guzman
- Princeton Biochemicals, Inc., Princeton, NJ 08543, United States of America; Columbia University Irving Medical Center, New York, NY 10032, United States of America
| | - Timothy Blanc
- Eli Lilly and Company, Branchburg, NJ 08876, United States of America
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44
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Chen W, Liu F, Zhang C, Duan Y, Ma J, Wang Y, Chen G. A review of advances in aptamer-based cell detection technology. Mol Biol Rep 2023; 50:5425-5438. [PMID: 37101007 DOI: 10.1007/s11033-023-08410-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/24/2023] [Indexed: 04/28/2023]
Abstract
Since cells are the basic structural and functional units of organisms, the detection or quantitation of cells is one of the most common basic problems in life science research. The established cell detection techniques mainly include fluorescent dye labeling, colorimetric assay, and lateral flow assay, all of which employ antibodies as cell recognition elements. However, the widespread application of the established methods generally dependent on antibodies is limited, because the preparation of antibodies is complicated and time-consuming, and unrecoverable denaturation is prone to occur with antibodies. By contrast, aptamers that are generally selected through the systematic evolution of ligands by exponential enrichment can avoid the disadvantages of antibodies due to their controllable synthesis, thermostability, and long shelf life, etc. Accordingly, aptamers may serve as novel molecular recognition elements like antibodies in combination with various techniques for cell detection. This paper reviews the developed aptamer-based cell detection methods, mainly including aptamer-fluorescent labeling, aptamer-isothermal amplification assay, electrochemical aptamer sensor, aptamer-based lateral flow analysis, and aptamer-colorimetric assay. The principles, advantages, progress of application in cell detection and future development trend of these methods were specially discussed. Overall, different assays are suitable for different detection purposes, and the development of more accurate, economical, efficient, and rapid aptamer-based cell detection methods is always on the road in the future. This review is expected to provide a reference for achieving efficient and accurate detection of cells as well as improving the usefulness of aptamers in the field of analytical applications.
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Affiliation(s)
- Wenrong Chen
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China
| | - Fuguo Liu
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Chunyun Zhang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China.
| | - Yu Duan
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jinju Ma
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Yuanyuan Wang
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China
| | - Guofu Chen
- School of Marine Science and Technology, Harbin Institute of Technology (Weihai), Wenhua West Road, 2#, Weihai, 264209, PR China.
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45
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Kim J, Shin MS, Shin J, Kim HM, Pham XH, Park SM, Kim DE, Kim YJ, Jun BH. Recent Trends in Lateral Flow Immunoassays with Optical Nanoparticles. Int J Mol Sci 2023; 24:ijms24119600. [PMID: 37298550 DOI: 10.3390/ijms24119600] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Rapid, accurate, and convenient diagnosis is essential for effective disease management. Various detection methods, such as enzyme-linked immunosorbent assay, have been extensively used, with lateral flow immunoassay (LFIA) recently emerging as a major diagnostic tool. Nanoparticles (NPs) with characteristic optical properties are used as probes for LFIA, and researchers have presented various types of optical NPs with modified optical properties. Herein, we review the literature on LFIA with optical NPs for the detection of specific targets in the context of diagnostics.
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Affiliation(s)
- Jaehi Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Min-Sup Shin
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Jonghyun Shin
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyung-Mo Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Seung-Min Park
- Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Urology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Dong-Eun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Young Jun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea
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46
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Greeshma M, Bhat AI, Jeevalatha A. Rapid onsite detection of piper yellow mottle virus infecting black pepper by recombinase polymerase amplification-lateral flow assay (RPA-LFA). J Virol Methods 2023; 315:114695. [PMID: 36822562 DOI: 10.1016/j.jviromet.2023.114695] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023]
Abstract
Piper yellow mottle virus (PYMoV) is a pararetrovirus associated with stunt disease in black pepper. As the primary spread of the virus occurs through vegetative propagation, effective diagnostics are required for the production of virus-free plants. Currently available assays are time-consuming, require expensive equipment, and are not suitable for on-site detection. In the present study, two rapid assays based on the recombinase polymerase amplification (RPA) coupled with lateral flow assay (LFA) using (i) 6-carboxyfluorescein (FAM) labeled nfo probe and biotin-labeled reverse primer and (ii) FAM labeled forward and biotin-labeled reverse primer was developed for the detection of PYMoV. The assays were performed using TwistAmp DNA amplification reagents and crude extract from the infected plant and mealybug as templates. Both assays were optimized for parameters like concentration of magnesium acetate, temperature, and time. The RPA product was then diluted and applied to the sample pad of a lateral flow device for visualizing the results. The formation of a colored line at the test line was considered positive for PYMoV. The entire process from sample preparation to visualization of results could be completed in about 30 min. The developed assays were specific and 10 times more sensitive than PCR. The assays were validated using field samples of black pepper and mealybug vectors.
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Affiliation(s)
- M Greeshma
- Division of Crop Protection, ICAR-Indian Institute of Spices Research, Marikunnu, Kozhikode 673012, India
| | - A I Bhat
- Division of Crop Protection, ICAR-Indian Institute of Spices Research, Marikunnu, Kozhikode 673012, India.
| | - A Jeevalatha
- Division of Crop Protection, ICAR-Indian Institute of Spices Research, Marikunnu, Kozhikode 673012, India
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47
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Hsiao WWW, Angela S, Le TN, Ku CC, Hu PS, Chiang WH. Evolution of Detecting Early Onset of Alzheimer's Disease: From Neuroimaging to Optical Immunoassays. J Alzheimers Dis 2023:JAD221202. [PMID: 37125550 DOI: 10.3233/jad-221202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Alzheimer's disease (AD) is a pathological disorder defined by the symptoms of memory loss and deterioration of cognitive abilities over time. Although the etiology is complex, it is mainly associated with the accumulation of toxic amyloid-β peptide (Aβ) aggregates and tau protein-induced neurofibrillary tangles (NFTs). Even now, creating non-invasive, sensitive, specific, and cost-effective diagnostic methods for AD remains challenging. Over the past few decades, polymers, and nanomaterials (e.g., nanodiamonds, nanogold, quantum dots) have become attractive and practical tools in nanomedicine for diagnosis and treatment. This review focuses on current developments in sensing methods such as enzyme-linked immunosorbent assay (ELISA) and surface-enhanced Raman scattering (SERS) to boost the sensitivity in detecting related biomarkers for AD. In addition, optical analysis platforms such as ELISA and SERS have found increasing popularity among researchers due to their excellent sensitivity and specificity, which may go as low as the femtomolar range. While ELISA offers easy technological usage and high throughput, SERS has the advantages of improved mobility, simple electrical equipment integration, and lower cost. Both portable optical sensing techniques are highly superior in terms of sensitivity, specificity, human application, and practicality, enabling the early identification of AD biomarkers.
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Affiliation(s)
- Wesley Wei-Wen Hsiao
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C
| | - Stefanny Angela
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C
| | - Trong-Nghia Le
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
| | - Chia-Chi Ku
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan, ROC
| | - Po-Sheng Hu
- College of Photonics, National Yang Ming Chiao Tung University, Tainan City, Taiwan
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C
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48
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Min J, Tu J, Xu C, Lukas H, Shin S, Yang Y, Solomon SA, Mukasa D, Gao W. Skin-Interfaced Wearable Sweat Sensors for Precision Medicine. Chem Rev 2023; 123:5049-5138. [PMID: 36971504 PMCID: PMC10406569 DOI: 10.1021/acs.chemrev.2c00823] [Citation(s) in RCA: 106] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Wearable sensors hold great potential in empowering personalized health monitoring, predictive analytics, and timely intervention toward personalized healthcare. Advances in flexible electronics, materials science, and electrochemistry have spurred the development of wearable sweat sensors that enable the continuous and noninvasive screening of analytes indicative of health status. Existing major challenges in wearable sensors include: improving the sweat extraction and sweat sensing capabilities, improving the form factor of the wearable device for minimal discomfort and reliable measurements when worn, and understanding the clinical value of sweat analytes toward biomarker discovery. This review provides a comprehensive review of wearable sweat sensors and outlines state-of-the-art technologies and research that strive to bridge these gaps. The physiology of sweat, materials, biosensing mechanisms and advances, and approaches for sweat induction and sampling are introduced. Additionally, design considerations for the system-level development of wearable sweat sensing devices, spanning from strategies for prolonged sweat extraction to efficient powering of wearables, are discussed. Furthermore, the applications, data analytics, commercialization efforts, challenges, and prospects of wearable sweat sensors for precision medicine are discussed.
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Affiliation(s)
- Jihong Min
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Jiaobing Tu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Changhao Xu
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Heather Lukas
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Soyoung Shin
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Yiran Yang
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Samuel A. Solomon
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Daniel Mukasa
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, 91125, USA
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49
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Dong JM, Wang RQ, Yuan NN, Guo JH, Yu XY, Peng AH, Cai JY, Xue L, Zhou ZL, Sun YH, Chen YY. Recent advances in optical aptasensors for biomarkers in early diagnosis and prognosis monitoring of hepatocellular carcinoma. Front Cell Dev Biol 2023; 11:1160544. [PMID: 37143897 PMCID: PMC10152369 DOI: 10.3389/fcell.2023.1160544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/06/2023] [Indexed: 05/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) accounts for approximately 90% of all primary liver cancers and is one of the main malignant tumor types globally. It is essential to develop rapid, ultrasensitive, and accurate strategies for the diagnosis and surveillance of HCC. In recent years, aptasensors have attracted particular attention owing to their high sensitivity, excellent selectivity, and low production costs. Optical analysis, as a potential analytical tool, offers the advantages of a wide range of targets, rapid response, and simple instrumentation. In this review, recent progress in several types of optical aptasensors for biomarkers in early diagnosis and prognosis monitoring of HCC is summarized. Furthermore, we evaluate the strengths and limitations of these sensors and discuss the challenges and future perspectives for their use in HCC diagnosis and surveillance.
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Affiliation(s)
- Jia-Mei Dong
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Rui-Qi Wang
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Ning-Ning Yuan
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Jia-Hao Guo
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Xin-Yang Yu
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People’s Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Ang-Hui Peng
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People’s Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Jia-Yi Cai
- School of Stomatology, Zunyi Medical University, Zunyi, Guizhou, China
| | - Lei Xue
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People’s Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Zhi-Ling Zhou
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Yi-Hao Sun
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People’s Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
| | - Ying-Yin Chen
- Department of Pharmacy, Zhuhai People’s Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People’s Hospital Affiliated with Jinan University, Jinan University, Zhuhai, Guangdong, China
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50
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Bradley Z, Coleman PA, Courtney MA, Fishlock S, McGrath J, Uniacke-Lowe T, Bhalla N, McLaughlin JA, Hogan J, Hanrahan JP, Yan KT, McKee P. Effect of Selenium Nanoparticle Size on IL-6 Detection Sensitivity in a Lateral Flow Device. ACS OMEGA 2023; 8:8407-8414. [PMID: 36910974 PMCID: PMC9996617 DOI: 10.1021/acsomega.2c07297] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Sepsis is the body's response to an infection. Existing diagnostic testing equipment is not available in primary care settings and requires long waiting times. Lateral flow devices (LFDs) could be employed in point-of-care (POC) settings for sepsis detection; however, they currently lack the required sensitivity. Herein, LFDs are constructed using 150-310 nm sized selenium nanoparticles (SeNPs) and are compared to commercial 40 nm gold nanoparticles (AuNPs) for the detection of the sepsis biomarker interleukin-6 (IL-6). Both 310 and 150 nm SeNPs reported a lower limit of detection (LOD) than 40 nm AuNPs (0.1 ng/mL compared to 1 ng/mL), although at the cost of test line visual intensity. This is to our knowledge the first use of larger SeNPs (>100 nm) in LFDs and the first comparison of the effect of the size of SeNPs on assay sensitivity in this context. The results herein demonstrate that large SeNPs are viable alternatives to existing commercial labels, with the potential for higher sensitivity than standard 40 nm AuNPs.
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Affiliation(s)
- Zoe Bradley
- Biopanda
Reagents Ltd., Unit 14, Carrowreagh Business
Park, Carrowreagh Road, Belfast BT16 1QQ, United
Kingdom
- Nanotechnology
and Integrated Bioengineering Centre, School of Engineering, University of Ulster, Belfast BT15 1ED, United Kingdom
| | - Patrick A. Coleman
- Environmental
Research Institute, Glantreo Ltd., Cork T23 XE10, Ireland
- Department
of Chemistry, College of SEFS, University
College Cork, Kane Building, Cork T12 YN60, Ireland
| | | | - Sam Fishlock
- Nanotechnology
and Integrated Bioengineering Centre, School of Engineering, University of Ulster, Belfast BT15 1ED, United Kingdom
| | - Joseph McGrath
- Environmental
Research Institute, Glantreo Ltd., Cork T23 XE10, Ireland
| | - Therese Uniacke-Lowe
- Department
of Chemistry, School of Food and Nutritional Sciences, University College Cork, Level 2 Food Science Building, Cork T12 TP07, Ireland
| | - Nikhil Bhalla
- Nanotechnology
and Integrated Bioengineering Centre, School of Engineering, University of Ulster, Belfast BT15 1ED, United Kingdom
- Healthcare
Technology Hub, School of Engineering, University
of Ulster, Belfast BT15 1ED, United
Kingdom
| | - James A. McLaughlin
- Nanotechnology
and Integrated Bioengineering Centre, School of Engineering, University of Ulster, Belfast BT15 1ED, United Kingdom
| | - John Hogan
- Environmental
Research Institute, Glantreo Ltd., Cork T23 XE10, Ireland
| | - John P. Hanrahan
- Environmental
Research Institute, Glantreo Ltd., Cork T23 XE10, Ireland
| | - Ke-Ting Yan
- Biopanda
Reagents Ltd., Unit 14, Carrowreagh Business
Park, Carrowreagh Road, Belfast BT16 1QQ, United
Kingdom
| | - Philip McKee
- Biopanda
Reagents Ltd., Unit 14, Carrowreagh Business
Park, Carrowreagh Road, Belfast BT16 1QQ, United
Kingdom
| |
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