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Watari Y, Nakatani K, Kobata K, Matsuo K, Waku T, Kobori A. Ratiometric sandwich-type assays for RNAs with a point mutation using benzo[a]pyrene-modified probes. Chem Commun (Camb) 2024; 60:7610-7613. [PMID: 38957007 DOI: 10.1039/d4cc02188f] [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: 07/04/2024]
Abstract
Benzo[a]pyrene-modified oligonucleotides were developed for the detection of RNAs with a point mutation. The probes produced two distinct fluorescence signals in response to single nucleotide differences in the RNA sequences, allowing for discrimination between the matched and single base mismatched RNA sequences in colorimetric and ratiometric manners.
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Affiliation(s)
- Yu Watari
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kaito Nakatani
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kentaro Kobata
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kazuya Matsuo
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Tomonori Waku
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Akio Kobori
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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Vindeirinho JM, Oliveira R, Pinho E, Guiomar R, Azevedo NF, Almeida C. The potential of tailed amplicons for SARS-CoV-2 detection in Nucleic Acid Lateral Flow Assays. PLoS One 2024; 19:e0301234. [PMID: 38728290 PMCID: PMC11086916 DOI: 10.1371/journal.pone.0301234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/12/2024] [Indexed: 05/12/2024] Open
Abstract
Nucleic Acid Lateral Flow Assays (NALFAs) are a promising solution for the point-of-care detection of viruses like SARS-CoV-2. However, they show some drawbacks, such as the great dependency on the use of antibodies and the need for post-amplification protocols that enable the preparation of amplicons for effective readings, as well as low sensitivity. Here, we developed amplicons of a specific SARS-CoV-2 gene tailed with single-strand DNA (ssDNA) sequences to hybridize with DNA probes immobilized on the NALFA strips, thus overcoming the aforementioned problems. Results have shown that tailed primers have not compromised the amplification efficiency and allowed the correct detection of the amplicons in the lateral flow strip. This approach has presented a limit of detection (LOD) of 25 RNA copies /reaction mix (1 copy/μL) and the test of cross-reactivity with other related viruses has not shown any cross-reactivity. Twenty clinical samples were evaluated by NALFA and simultaneously compared with the gold standard RT-qPCR protocol, originating equal results. Although the number of clinical specimens tested being relatively small, this indicates a sensitivity and specificity both of 100%. In short, an alternative NALFA was successfully implemented, rendering an accurate route for SARS-CoV-2 diagnosis, compatible with low-resource settings.
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Affiliation(s)
- João M. Vindeirinho
- I.P–National Institute for Agrarian and Veterinarian Research, INIAV, Rua dos Lagidos, Lugar da Madalena, Vairão, Portugal
- Faculty of Engineering, LEPABE–Laboratory for Process Engineering, Environment, Biotechnology and Energy, University of Porto, Porto, Portugal
- Faculty of Engineering, ALiCE–Associate Laboratory in Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Ricardo Oliveira
- I.P–National Institute for Agrarian and Veterinarian Research, INIAV, Rua dos Lagidos, Lugar da Madalena, Vairão, Portugal
- Faculty of Engineering, LEPABE–Laboratory for Process Engineering, Environment, Biotechnology and Energy, University of Porto, Porto, Portugal
- Faculty of Engineering, ALiCE–Associate Laboratory in Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Eva Pinho
- I.P–National Institute for Agrarian and Veterinarian Research, INIAV, Rua dos Lagidos, Lugar da Madalena, Vairão, Portugal
- Faculty of Engineering, LEPABE–Laboratory for Process Engineering, Environment, Biotechnology and Energy, University of Porto, Porto, Portugal
- Faculty of Engineering, ALiCE–Associate Laboratory in Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Raquel Guiomar
- INSA, I.P–National Institute of Health Dr. Ricardo Jorge, Lisboa, Portugal
| | - Nuno F. Azevedo
- Faculty of Engineering, LEPABE–Laboratory for Process Engineering, Environment, Biotechnology and Energy, University of Porto, Porto, Portugal
- Faculty of Engineering, ALiCE–Associate Laboratory in Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Carina Almeida
- I.P–National Institute for Agrarian and Veterinarian Research, INIAV, Rua dos Lagidos, Lugar da Madalena, Vairão, Portugal
- Faculty of Engineering, LEPABE–Laboratory for Process Engineering, Environment, Biotechnology and Energy, University of Porto, Porto, Portugal
- Faculty of Engineering, ALiCE–Associate Laboratory in Chemical Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, Portugal
- Center of Biological Engineering (CEB), University of Minho, Braga, Portugal
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3
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Li Z, Zhai W, Wang L, Liu J, Li C, Xu L. Preparation and characterization of a homogeneous immunoassay for point-of-care testing (POCT) of procalcitonin (PCT). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5002-5009. [PMID: 37728429 DOI: 10.1039/d3ay00890h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Procalcitonin (PCT) has been recognized as a specific and early marker for microbial infection and sepsis. Sensitive measuring interaction-triggered luminescence experiment (SMILE), a homogeneous immunoassay method, was established for point-of-care testing (POCT) of PCT. SMILE is achieved through the principle of double antibody sandwich, where two antibodies immobilized on the surface of polystyrene microspheres (donor and acceptor beads) bind to the PCT antigen. The donor bead contains phthalocyanine dye (luminol chemiluminescent substance) and the acceptor bead contains dimethylthiophene derivatives and Eu chelates. Therefore, singlet oxygen can be transferred when the distance between donor and acceptor beads is within 200 nm, generating detectable luminescent signals. Scanning electron microscopy (SEM) was used to detect the diameter and polymer dispersity index (PDI) of microspheres before and after binding with antibodies to characterize the immobilization of antibodies. The reaction conditions for antibody immobilization including pH, mass ratio and reaction time have also been optimized. The limit of quantitation (LOQ) of the SMILE method (0.01 ng mL-1) was lower than that of the LFI method (0.1 ng mL-1), the working range (0.01-500 ng mL-1) was wider than that of the LFI method (0.1-50 ng mL-1), and the assay time (10 min) was shorter than that of the LFI method (15 min). So, SMILE is more suitable for POCT of PCT compared with lateral flow immunochromatography (LFI), which is the most used measuring method, due to its advantages of simple operation, saving time, convenience, wide detection range, and high sensitivity and accuracy.
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Affiliation(s)
- Zhaoying Li
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Chest Hospital, Tianjin, 300222, China
| | | | - Lu Wang
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Jiyang Liu
- Epsilon Biotechnology Corporation, Zhejiang, 311199, China
| | - Chunjie Li
- Tianjin Chest Hospital, Tianjin, 300222, China
| | - Liang Xu
- Graduate School, Tianjin Medical University, Tianjin, 300070, China.
- Tianjin Medical College, Tianjin, 300222, China
- School of Pharmacy, Tianjin Medical University, No. 22 Qixiangtai Road, Heping District, Tianjin, 300070, China
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Sun Q, Ning Q, Li T, Jiang Q, Feng S, Tang N, Cui D, Wang K. Immunochromatographic enhancement strategy for SARS-CoV-2 detection based on nanotechnology. NANOSCALE 2023; 15:15092-15107. [PMID: 37676509 DOI: 10.1039/d3nr02396f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
The global outbreak of coronavirus disease 2019 (COVID-19) has been catastrophic to both human health and social development. Therefore, developing highly reliable and sensitive point-of-care testing (POCT) for detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a priority. Among all available POCTs, the lateral flow immunoassay (LFIA, also known as immunochromatography) has proved to be effective due to its accuracy, portability, convenience, and speed. In areas with a scarcity of laboratory resources and medical personnel, the LFIA provides an affordable option for the diagnosis of COVID-19. This review offers a comprehensive overview of methods for improving the sensitivity of SARS-CoV-2 detection using immunochromatography based on nanotechnology, sorted according to the different detection targets (antigens, antibodies, and nucleic acids). It also looks into the performance and properties of the various sensitivity enhancement strategies, before delving into the remaining challenges in COVID-19 diagnosis through LFIA. Ultimately, it seeks to provide helpful guidance in selecting an appropriate strategy for SARS-CoV-2 immunochromatographic detection based on nanotechnology.
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Affiliation(s)
- Qingwen Sun
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
| | - Qihong Ning
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
| | - Tangan Li
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
| | - Qixia Jiang
- Department of Cardiology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, 1111 XianXia Road, Shanghai, 200336, China
| | - Shaoqing Feng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Ning Tang
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
| | - Daxiang Cui
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
| | - Kan Wang
- School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai, 200240, China.
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Hamd-Ghadareh S, Salimi A, Vaziry A. Ultrasensitive Ratiometric Fluorescence Bioassay for Accurate Detection of Covid-19-Specific Nucleocapsid Protein in Clinical Serum Samples Using Modified Cleavable Mesoporous SiO 2 Satellite-Enriched Carbon Dots. ACS Biomater Sci Eng 2023; 9:5279-5292. [PMID: 37606622 DOI: 10.1021/acsbiomaterials.3c00391] [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] [Indexed: 08/23/2023]
Abstract
Due to the presence of various autofluorescent compounds in biological samples like serum and the photobleaching of organic fluorophores, fluorescence sensing has limited practical applicability. This study describes the development of an improved ratiometric fluorescence assay to determine the nucleocapsid protein (N protein), one of the most conserved biomarkers of Covid-19 in spiked and serum samples using highly stable buffer-based near IR-dual emission carbon dots (CDs) encapsulated into the cavities of cleavable silica nanocapsule (SNCs) nanocomposite. The cavities of cleavable silica nanocapsules (SNCs) and the formed core-shell CDs@ SNCs were used as a superior reservoir of fluorescent markers produced by cohydrolyzing tetraethyl orthosilicate and diiminosilane linker, which held hundreds of CDs in silica shell frameworks. The SiO2 nanocomposite was modified with an N protein antibody that specifically paired to the receptor binding region of the Cov-19 spike protein subunit. CDs were taken out of SNCs by NaBH4 reduction, and the released CDs exhibited dual emission at 475 and 675 nm when excited at 400 nm. Ratiometric detection is completed over a binding-induced, concentration-dependent immuno-affinity of the N protein that drives the fluorescence quenching phenomenon between the CDs as fluorophore and the AuNPs as quencher. As the N protein concentration increased, the intensity of the red emission (675 nm) dropped, whereas the intensity of the green emission (475 nm) already remained constant, which is due to sandwich immunoassays of CDs around AuNPs. Using the exceptional fluorescent characteristics of CDs and the high selectivity of nanocomposite functionalized with N-protein antibody, the developed assay efficiently eliminates the autofluorescence background interference of serum samples. The fluorescence ratio (I475/I675) provides a limit of detection of 2 pg mL-1 over a linear range of 0.01 to 5 ng mL-1 and exhibits an amplified sensitivity of 54 times compared to conventional immunoassay using CDs as fluorescent labels. With one-step signal amplification and requiring small sample quantities (only 20 μL), this sensing platform can be effectively used for the accurate detection of N protein, and no cross-reactivity is detected in the presence of different interfering agents.
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Affiliation(s)
| | - Abdollah Salimi
- Department of Chemistry, University of Kurdistan, 66177-15175, Sanandaj-Iran
- Research Center for Nanotechnology, University of Kurdistan, 66177-15175 Sanandaj, Iran
| | - Asaad Vaziry
- Department of Animal Science, Faculty of Agriculture, University of Kurdistan, 66177-15175 Sanandaj, Iran
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de Olazarra AS, Wang SX. Advances in point-of-care genetic testing for personalized medicine applications. BIOMICROFLUIDICS 2023; 17:031501. [PMID: 37159750 PMCID: PMC10163839 DOI: 10.1063/5.0143311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 04/12/2023] [Indexed: 05/11/2023]
Abstract
Breakthroughs within the fields of genomics and bioinformatics have enabled the identification of numerous genetic biomarkers that reflect an individual's disease susceptibility, disease progression, and therapy responsiveness. The personalized medicine paradigm capitalizes on these breakthroughs by utilizing an individual's genetic profile to guide treatment selection, dosing, and preventative care. However, integration of personalized medicine into routine clinical practice has been limited-in part-by a dearth of widely deployable, timely, and cost-effective genetic analysis tools. Fortunately, the last several decades have been characterized by tremendous progress with respect to the development of molecular point-of-care tests (POCTs). Advances in microfluidic technologies, accompanied by improvements and innovations in amplification methods, have opened new doors to health monitoring at the point-of-care. While many of these technologies were developed with rapid infectious disease diagnostics in mind, they are well-suited for deployment as genetic testing platforms for personalized medicine applications. In the coming years, we expect that these innovations in molecular POCT technology will play a critical role in enabling widespread adoption of personalized medicine methods. In this work, we review the current and emerging generations of point-of-care molecular testing platforms and assess their applicability toward accelerating the personalized medicine paradigm.
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Affiliation(s)
- A. S. de Olazarra
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA
| | - S. X. Wang
- Author to whom correspondence should be addressed:
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7
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Pohanka M. Immunosensors for Assay of Toxic Biological Warfare Agents. BIOSENSORS 2023; 13:402. [PMID: 36979614 PMCID: PMC10046508 DOI: 10.3390/bios13030402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 06/18/2023]
Abstract
An immunosensor for the assay of toxic biological warfare agents is a biosensor suitable for detecting hazardous substances such as aflatoxin, botulinum toxin, ricin, Shiga toxin, and others. The application of immunosensors is used in outdoor assays, point-of-care tests, as a spare method for more expensive devices, and even in the laboratory as a standard analytical method. Some immunosensors, such as automated flow-through analyzers or lateral flow tests, have been successfully commercialized as tools for toxins assay, but the research is ongoing. New devices are being developed, and the use of advanced materials and assay techniques make immunosensors highly competitive analytical devices in the field of toxic biological warfare agents assay. This review summarizes facts about current applications and new trends of immunosensors regarding recent papers in this area.
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Affiliation(s)
- Miroslav Pohanka
- Faculty of Military Health Sciences, University of Defense, Trebesska 1575, CZ-50001 Hradec Kralove, Czech Republic
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Zingg JM, Yang YP, Seely S, Joshi P, Roshid MHO, Iribarren Latasa F, O'Connor G, Alfaro J, Riquelme E, Bernales S, Dikici E, Deo S, Daunert S. Rapid isothermal point-of-care test for screening of SARS-CoV-2 (COVID-19). ASPECTS OF MOLECULAR MEDICINE 2023; 1:100002. [PMID: 37519861 PMCID: PMC9890548 DOI: 10.1016/j.amolm.2023.100002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023]
Abstract
Rapid on-site diagnosis of emerging pathogens is key for early identification of infected individuals and for prevention of further spreading in a population. Currently available molecular diagnostic tests are instrument-based whereas rapid antibody and antigen tests are often not sufficiently sensitive for detection in pre-symptomatic subjects. There is a need for rapid point of care molecular screening tests that can be easily adapted to emerging pathogens and are selective, sensitive, reliable in different settings around the world. We have developed a simple, rapid (<30 min), and inexpensive test for SARS-CoV-2 that is based on combination of isothermal reverse transcription recombinase polymerase amplification (RT-RPA) using modified primers and visual detection with paper-based microfluidics. Our test (CoRapID) is specific for SARS-CoV-2 (alpha to omicron variants) and does not detect other coronaviruses and pathogens by in silico and in vitro analysis. A two-step test protocol was developed with stable lyophilized reagents that reduces handling by using portable and disposable components (droppers, microapplicators/swabs, paper-strips). After optimization of assay components and conditions, we have achieved a limit of detection (LoD) of 1 copy/reaction by adding a blocking primer to the lateral flow assay. Using a set of 138 clinical samples, a sensitivity of 88.1% (P < 0.05, CI: 78.2-93.8%) and specificity of 93.9% (P < 0.05, CI: 85.4-97.6%) was determined. The lack of need for instrumentation for our CoRapID makes it an ideal on-site primary screening tool for local hospitals, doctors' offices, senior homes, workplaces, and in remote settings around the world that often do not have access to clinical laboratories.
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Affiliation(s)
- Jean-Marc Zingg
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
| | - Yu-Ping Yang
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
| | - Spencer Seely
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
| | - Pratibha Joshi
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
| | - Md Harun Or Roshid
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
- Department of Chemistry, University of Miami, Miami, FL, 33146, USA
| | - Fabiola Iribarren Latasa
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
- Universidad Francisco de Vitoria, Madrid, Spain
| | - Gregory O'Connor
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
| | | | | | - Sebastian Bernales
- Merken Biotech SpA, Zañartu, 1482, Santiago, Chile
- Centro Ciencia & Vida, Zañartu, 1482, Santiago, Chile
| | - Emre Dikici
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136-6129, USA
| | - Sapna Deo
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136-6129, USA
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, Miller School of Medicine, University of Miami, Miami, FL, 33136-6129, USA
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute, University of Miami, Miami, FL, 33136-6129, USA
- University of Miami Clinical and Translational Science Institute, University of Miami, Miami, FL, 33136-6129, USA
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Parween S, Asthana A, Nahar P. Fundamentals of Image-Based Assay (IBA) System for Affordable Point of Care Diagnostics. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Zhang Y, Chai Y, Hu Z, Xu Z, Li M, Chen X, Yang C, Liu J. Recent Progress on Rapid Lateral Flow Assay-Based Early Diagnosis of COVID-19. Front Bioeng Biotechnol 2022; 10:866368. [PMID: 35592553 PMCID: PMC9111179 DOI: 10.3389/fbioe.2022.866368] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/04/2022] [Indexed: 12/12/2022] Open
Abstract
The outbreak of the coronavirus disease 2019 (COVID-19) has resulted in enormous losses worldwide. Through effective control measures and vaccination, prevention and curbing have proven significantly effective; however, the disease has still not been eliminated. Therefore, it is necessary to develop a simple, convenient, and rapid detection strategy for controlling disease recurrence and transmission. Taking advantage of their low-cost and simple operation, point-of-care test (POCT) kits for COVID-19 based on the lateral flow assay (LFA) chemistry have become one of the most convenient and widely used screening tools for pathogens in hospitals and at home. In this review, we introduce essential features of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, compare existing detection methods, and focus on the principles, merits and limitations of the LFAs based on viral nucleic acids, antigens, and corresponding antibodies. A systematic comparison was realized through summarization and analyses, providing a comprehensive demonstration of the LFA technology and insights into preventing and curbing the COVID-19 pandemic.
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Affiliation(s)
- Ying Zhang
- Central Laboratory, Longgang District People’s Hospital of Shenzhen and The Second Affiliated Hospital of the Chinese University of Hong Kong, Shenzhen, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Yujuan Chai
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Zulu Hu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Meirong Li
- Central Laboratory, Longgang District People’s Hospital of Shenzhen and The Second Affiliated Hospital of the Chinese University of Hong Kong, Shenzhen, China
| | - Xin Chen
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China
| | - Jia Liu
- Central Laboratory, Longgang District People’s Hospital of Shenzhen and The Second Affiliated Hospital of the Chinese University of Hong Kong, Shenzhen, China
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Flores-Contreras EA, González-González RB, Rodríguez-Sánchez IP, Yee-de León JF, Iqbal HMN, González-González E. Microfluidics-Based Biosensing Platforms: Emerging Frontiers in Point-of-Care Testing SARS-CoV-2 and Seroprevalence. BIOSENSORS 2022; 12:179. [PMID: 35323449 PMCID: PMC8946853 DOI: 10.3390/bios12030179] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 02/05/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused the ongoing COVID-19 (coronavirus disease-2019) outbreak and has unprecedentedly impacted the public health and economic sector. The pandemic has forced researchers to focus on the accurate and early detection of SARS-CoV-2, developing novel diagnostic tests. Among these, microfluidic-based tests stand out for their multiple benefits, such as their portability, low cost, and minimal reagents used. This review discusses the different microfluidic platforms applied in detecting SARS-CoV-2 and seroprevalence, classified into three sections according to the molecules to be detected, i.e., (1) nucleic acid, (2) antigens, and (3) anti-SARS-CoV-2 antibodies. Moreover, commercially available alternatives based on microfluidic platforms are described. Timely and accurate results allow healthcare professionals to perform efficient treatments and make appropriate decisions for infection control; therefore, novel developments that integrate microfluidic technology may provide solutions in the form of massive diagnostics to control the spread of infectious diseases.
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Affiliation(s)
- Elda A. Flores-Contreras
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Nuevo León, Mexico; (E.A.F.-C.); (R.B.G.-G.)
| | | | - Iram P. Rodríguez-Sánchez
- Laboratorio de Fisiología Molecular y Estructural, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Nuevo León, Mexico;
| | | | - Hafiz M. N. Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Nuevo León, Mexico; (E.A.F.-C.); (R.B.G.-G.)
| | - Everardo González-González
- Laboratorio de Fisiología Molecular y Estructural, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Nuevo León, Mexico;
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