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Wang R, Xu S, Wei E, He P, Zhang Y, Wang Q, Tang X, Shen Z. Recombinase-aided amplification coupled with lateral flow dipstick for efficient and accurate detection of Bombyx mori nucleopolyhedrovirus. Folia Microbiol (Praha) 2024; 69:667-676. [PMID: 37952188 DOI: 10.1007/s12223-023-01102-7] [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: 04/28/2023] [Accepted: 10/29/2023] [Indexed: 11/14/2023]
Abstract
The infection of Bombyx mori nucleopolyhedrovirus (BmNPV) is one of the main causes of economic losses in sericulture. Thus, it is essential to establish rapid and effective method for BmNPV detection. In the present study, we have developed a recombinase-aided amplification (RAA) to amplify the BmNPV genomic DNA at 37 °C within 30 min, and achieved a rapid detection method by coupling with a lateral flow dipstick (LFD). The RAA-LFD method had a satisfactory detection limit of 6 copies/μL of recombinant plasmid pMD19-T-IE1, and BmNPV infection of silkworm can be detected 12 h post-infection. This method was highly specific for BmNPV, and without cross-reactivity to other silkworm pathogens. In contrast to conventional polymerase chain reaction (PCR), the RAA-LFD assay showed higher sensitivity, cost-saving, and especially is apt to on-site detection of BmNPV infection in the sericulture production.
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Affiliation(s)
- Runpeng Wang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Sheng Xu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Erjun Wei
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Ping He
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yiling Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Qiang Wang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Xudong Tang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Zhongyuan Shen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China.
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China.
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Li Y, Shang J, Wang Y, Luo J, Jiang W, Yin X, Zhang F, Deng C, Yu X, Liu H. Establishment of two assays based on reverse transcription recombinase-aided amplification technology for rapid detection of H5 subtype avian influenza virus. Microbiol Spectr 2023; 11:e0218623. [PMID: 37811963 PMCID: PMC10715165 DOI: 10.1128/spectrum.02186-23] [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: 05/30/2023] [Accepted: 08/10/2023] [Indexed: 10/10/2023] Open
Abstract
IMPORTANCE Avian influenza virus (AIV) subtype H5 is a highly contagious zoonotic disease and a serious threat to the farming industry and public health. Traditional detection methods, including virus isolation and real-time PCR, require tertiary biological laboratories and are time-consuming and complex to perform, making it difficult to rapidly diagnose H5 subtype avian influenza viruses. In this study, we successfully developed two methods, namely, RF-RT-RAA and RT-RAA-LFD, for rapid detection of H5-AIV. The assays are characterized by their high specificity, sensitivity, and user-friendliness. Moreover, the results of the reaction can be visually assessed, which are suitable for both laboratory testing and grassroots farm screening for H5-AIV.
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Affiliation(s)
- Yang Li
- China Animal Health and Epidemiology Center, Qingdao, China
| | - Jiajing Shang
- China Animal Health and Epidemiology Center, Qingdao, China
- School of Life Science and Food Engineering, Hebei University of Engineering, Hebei, China
| | - Yixin Wang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, China
| | - Juan Luo
- China Animal Health and Epidemiology Center, Qingdao, China
- School of Life Science and Food Engineering, Hebei University of Engineering, Hebei, China
| | - Wenming Jiang
- China Animal Health and Epidemiology Center, Qingdao, China
| | - Xin Yin
- China Animal Health and Epidemiology Center, Qingdao, China
| | - Fuyou Zhang
- China Animal Health and Epidemiology Center, Qingdao, China
| | - Chunran Deng
- China Animal Health and Epidemiology Center, Qingdao, China
- School of Life Science and Food Engineering, Hebei University of Engineering, Hebei, China
| | - Xiaohui Yu
- China Animal Health and Epidemiology Center, Qingdao, China
| | - HuaLei Liu
- China Animal Health and Epidemiology Center, Qingdao, China
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3
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Wang Y, Zhang X, Zhang Z, Xu R, Yang P, Yuan P, Zhang L, Cui Y, Xie Z, Li J. Reverse transcription recombinase-aided amplification assay combined with a lateral flow dipstick for detection of duck Tembusu virus. J Virol Methods 2023; 322:114810. [PMID: 37689372 DOI: 10.1016/j.jviromet.2023.114810] [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: 06/27/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/11/2023]
Abstract
Duck Tembusu virus disease, caused by duck Tembusu virus (DTMUV), brings great harm to duck industry. Early diagnosis is of great significance for the prevention and control of this disease. In order to develop a specific and sensitive method for rapid diagnosis of DTMUV, reverse-transcriptase recombinase aided amplification combined with lateral flow dipstick (RT-RAA-LFD) method for detection of DTMUV was established. Firstly, downstream primer was labeled with biotin and probe was labeled with FAM, and primer concentration, reaction time, and reaction temperature were optimized. Then, the specificity and sensitivity of this method was investigated. The results of specificity test showed that it had no cross reaction with other common pathogens such as low pathogenic avian influenza virus (AIV), Newcastle disease virus (NDV), duck hepatitis A virus (DHV), and duck Reovirus. The results of sensitivity test showed that the minimum detection limit of this method was 10 copies/μL, which was 1000 times than conventional RT-PCR (104 copies/μL), and equivalent to that of fluorescent quantitative PCR. Furthermore, this RT-RAA-LFD method demonstrated excellent intragroup and intergroup consistency. Finally, the RT-RAA-LFD assay and real-time PCR were both utilized to examine 58 clinical samples concurrently. The results showed that the RT-RAA-LFD method (5/58) was more sensitive than the fluorescence quantitative PCR method (4/58). In summary, RT-RAA-LFD method established in this study had a strong specificity and high sensitivity, which provided technical support for clinical detection of DTMUV.
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Affiliation(s)
- Yixin Wang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Xue Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Zhenyan Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Ruixue Xu
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Pingping Yang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Peng Yuan
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Lianzhi Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Yanshun Cui
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Zhijing Xie
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Jianliang Li
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, Shandong 271018, China.
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Li X, Zhu S, Zhang X, Ren Y, He J, Zhou J, Yin L, Wang G, Zhong T, Wang L, Xiao Y, Zhu C, Yin C, Yu X. Advances in the application of recombinase-aided amplification combined with CRISPR-Cas technology in quick detection of pathogenic microbes. Front Bioeng Biotechnol 2023; 11:1215466. [PMID: 37720320 PMCID: PMC10502170 DOI: 10.3389/fbioe.2023.1215466] [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: 05/02/2023] [Accepted: 08/15/2023] [Indexed: 09/19/2023] Open
Abstract
The rapid diagnosis of pathogenic infections plays a vital role in disease prevention, control, and public health safety. Recombinase-aided amplification (RAA) is an innovative isothermal nucleic acid amplification technology capable of fast DNA or RNA amplification at low temperatures. RAA offers advantages such as simplicity, speed, precision, energy efficiency, and convenient operation. This technology relies on four essential components: recombinase, single-stranded DNA-binding protein (SSB), DNA polymerase, and deoxyribonucleoside triphosphates, which collectively replace the laborious thermal cycling process of traditional polymerase chain reaction (PCR). In recent years, the CRISPR-Cas (clustered regularly interspaced short palindromic repeats-associated proteins) system, a groundbreaking genome engineering tool, has garnered widespread attention across biotechnology, agriculture, and medicine. Increasingly, researchers have integrated the recombinase polymerase amplification system (or RAA system) with CRISPR technology, enabling more convenient and intuitive determination of detection results. This integration has significantly expanded the application of RAA in pathogen detection. The step-by-step operation of these two systems has been successfully employed for molecular diagnosis of pathogenic microbes, while the single-tube one-step method holds promise for efficient pathogen detection. This paper provides a comprehensive review of RAA combined with CRISPR-Cas and its applications in pathogen detection, aiming to serve as a valuable reference for further research in related fields.
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Affiliation(s)
- Xiaoping Li
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Shuying Zhu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Xinling Zhang
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Yanli Ren
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, 310003, China
| | - Jing He
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Jiawei Zhou
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Liliang Yin
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Gang Wang
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China
| | - Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
| | - Ling Wang
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
| | - Ying Xiao
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
- Guangdong-Hong Kong-Macau Joint Laboratory for Contaminants Exposure and Health, Guangzhou, Guangdong Province, 510006, China
| | - Chunying Zhu
- Clinical Psychology Department, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, 310005, China
| | - Chengliang Yin
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
| | - Xi Yu
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long Taipa, Macau, 999078, China
- Guangdong-Hong Kong-Macau Joint Laboratory for Contaminants Exposure and Health, Guangzhou, Guangdong Province, 510006, China
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Wang F, Liang Q, Lv R, Ahmad S, Bano M, Weng G, Wen R. Optimization and Validation of Reverse Transcription Recombinase-Aided Amplification (RT-RAA) for Sorghum Mosaic Virus Detection in Sugarcane. Pathogens 2023; 12:1055. [PMID: 37624015 PMCID: PMC10457762 DOI: 10.3390/pathogens12081055] [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: 07/01/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023] Open
Abstract
Sorghum mosaic virus (SrMV) causes sugarcane mosaic disease and has significant adverse economic impacts on the cultivation of sugarcane. This study aimed to develop a rapid isotherm nucleic acid amplification method for detecting SrMV. Specific primers were designed to target the conserved region of the P3 gene of SrMV. The reverse transcription recombinase-aided amplification (RT-RAA) method was developed by screening primers and optimizing reaction conditions. Comparative analyses with RT-PCR demonstrated that the RT-RAA method exhibited superior specificity, sensitivity, and reliability for SrMV detection. Notably, using a standard plasmid diluted 10-fold continuously as a template, the sensitivity of RT-RAA was 100-fold higher than that of RT-PCR. Moreover, the RT-RAA reaction displayed flexibility in a temperature range of 24-49 °C, eliminating the need for expensive and complex temperature control equipment. Thus, this method could be utilized at ambient or even human body temperature. Within a short duration of 10 min at 39 °C, the target sequence of SrMV could be effectively amplified. Specificity analysis revealed no cross-reactivity between SrMV and other common sugarcane viruses detected via the RT-RAA. With its high sensitivity, rapid reaction time, and minimal equipment requirements, this method presents a promising diagnostic tool for the reliable and expedited detection of SrMV. Furthermore, it indicates broad applicability for successfully detecting other sugarcane viruses.
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Affiliation(s)
| | | | | | | | | | | | - Ronghui Wen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Science and Technology, Ministry and Province Co-Sponsored Collaborative Innovation Center for Sugarcane and Sugar Industry, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning 530004, China; (F.W.); (Q.L.); (R.L.); (S.A.); (M.B.); (G.W.)
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6
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Zhang XR, Ma T, Wang YC, Hu S, Yang Y. Development of a Novel Method for the Clinical Visualization and Rapid Identification of Multidrug-Resistant Candida auris. Microbiol Spectr 2023; 11:e0491222. [PMID: 37098907 PMCID: PMC10269898 DOI: 10.1128/spectrum.04912-22] [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: 11/29/2022] [Accepted: 03/25/2023] [Indexed: 04/27/2023] Open
Abstract
Outbreaks of multidrug-resistant Candida auris infections, associated with a mortality rate of 30% to 60%, are of serious global concern. Candida auris demonstrates high transmission rates in hospital settings; however, its rapid and accurate identification using currently available clinical identification techniques is challenging. In this study, we developed a rapid and effective method for detecting C. auris based on recombinase-aided amplification combined with lateral flow strips (RAA-LFS). We also screened the appropriate reaction conditions. Furthermore, we investigated the specificity and sensitivity of the detection system and its ability to distinguish other fungal strains. Candida auris was accurately identified and differentiated from related species at 37°C within 15 min. The minimum detection limit was 1 CFU (or 10 fg/reaction) and was not affected by high concentrations of related species or host DNA. The simple and cost-efficient detection method established in this study exhibited high specificity and sensitivity and successfully detected C. auris in simulated clinical samples. Compared with other traditional detection methods, this method greatly reduces the time and cost of testing and is thus suitable for hospitals or clinics in remote underfunded areas for screening C. auris infection and colonization. IMPORTANCE Candida auris is a highly lethal, multidrug-resistant, invasive fungus. However, conventional methods of C. auris identification are time-consuming and laborious and have low sensitivity and high error rates. In this study, a new molecular diagnostic method based on recombinase-aided amplification combined with lateral flow strips (RAA-LFS) was developed, and accurate results could be obtained by catalyzing the reaction at body temperature for 15 min. This method can be used for rapid clinical detection of C. auris, consequently saving valuable treatment time for patients.
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Affiliation(s)
- X. R. Zhang
- Bioinformatics Center of AMMS, Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
- School of Life Sciences, Hebei University, Baoding, People’s Republic of China
| | - T. Ma
- Bioinformatics Center of AMMS, Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
| | - Y. C. Wang
- Bioinformatics Center of AMMS, Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
| | - S. Hu
- Bioinformatics Center of AMMS, Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
| | - Y. Yang
- Bioinformatics Center of AMMS, Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Microbiology and Epidemiology, Beijing, People’s Republic of China
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Pollak NM, Olsson M, Ahmed M, Tan J, Lim G, Setoh YX, Wong JCC, Lai YL, Hobson-Peters J, Macdonald J, McMillan D. Rapid Diagnostic Tests for the Detection of the Four Dengue Virus Serotypes in Clinically Relevant Matrices. Microbiol Spectr 2023; 11:e0279622. [PMID: 36682882 PMCID: PMC9927141 DOI: 10.1128/spectrum.02796-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The efficient and accurate diagnosis of dengue, a major mosquito-borne disease, is of primary importance for clinical care, surveillance, and outbreak control. The identification of specific dengue virus serotype 1 (DENV-1) to DENV-4 can help in understanding the transmission dynamics and spread of dengue disease. The four rapid low-resource serotype-specific dengue tests use a simple sample preparation reagent followed by reverse transcription-isothermal recombinase polymerase amplification (RT-RPA) combined with lateral flow detection (LFD) technology. Results are obtained directly from clinical sample matrices in 35 min, requiring only a heating block and pipettes for liquid handling. In addition, we demonstrate that the rapid sample preparation step inactivates DENV, improving laboratory safety. Human plasma and serum were spiked with DENV, and DENV was detected with analytical sensitivities of 333 to 22,500 median tissue culture infectious doses (TCID50)/mL. The analytical sensitivities in blood were 94,000 to 333,000 TCID50/mL. Analytical specificity testing confirmed that each test could detect multiple serotype-specific strains but did not respond to strains of other serotypes, closely related flaviviruses, or chikungunya virus. Clinical testing on 80 human serum samples demonstrated test specificities of between 94 and 100%, with a DENV-2 test sensitivity of 100%, detecting down to 0.004 PFU/μL, similar to the sensitivity of the PCR test; the other DENV tests detected down to 0.03 to 10.9 PFU/μL. Collectively, our data suggest that some of our rapid dengue serotyping tests provide a potential alternative to conventional labor-intensive RT-quantitative PCR (RT-qPCR) detection, which requires expensive thermal cycling instrumentation, technical expertise, and prolonged testing times. Our tests provide performance and speed without compromising specificity in human plasma and serum and could become promising tools for the detection of high DENV loads in resource-limited settings. IMPORTANCE The efficient and accurate diagnosis of dengue, a major mosquito-borne disease, is of primary importance for clinical care, surveillance, and outbreak control. This study describes the evaluation of four rapid low-resource serotype-specific dengue tests for the detection of specific DENV serotypes in clinical sample matrices. The tests use a simple sample preparation reagent followed by reverse transcription-isothermal recombinase polymerase amplification (RT-RPA) combined with lateral flow detection (LFD) technology. These tests have several advantages compared to RT-qPCR detection, such as a simple workflow, rapid sample processing and turnaround times (35 min from sample preparation to detection), minimal equipment needs, and improved laboratory safety through the inactivation of the virus during the sample preparation step. The low-resource formats of these rapid dengue serotyping tests have the potential to support effective dengue disease surveillance and enhance the diagnostic testing capacity in resource-limited countries with both endemic dengue and intense coronavirus disease 2019 (COVID-19) transmission.
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Affiliation(s)
- Nina M. Pollak
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- DMTC Ltd., Kew, Victoria, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Malin Olsson
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- DMTC Ltd., Kew, Victoria, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Madeeha Ahmed
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Javier Tan
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - George Lim
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Yin Xiang Setoh
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland, Australia
| | | | - Yee Ling Lai
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Jody Hobson-Peters
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Joanne Macdonald
- DMTC Ltd., Kew, Victoria, Australia
- BioCifer Pty. Ltd., Brisbane, Queensland, Australia
| | - David McMillan
- Centre for Bioinnovation, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
- DMTC Ltd., Kew, Victoria, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
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Zhou S, Zheng X, Yang Z, Huang Q, Yi J, Su L, Guo B, Xiu Y. Development of Two Recombinase Polymerase Amplification EXO (RPA-EXO) and Lateral Flow Dipstick (RPA-LFD) Techniques for the Rapid Visual Detection of Aeromonas salmonicida. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2022; 24:1094-1109. [PMID: 36192520 DOI: 10.1007/s10126-022-10170-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Aeromonas salmonicida is the pathogen underlying furunculosis, causing a septicemic infection that influences both salmonid and non-salmonid fish. Early diagnosis of these contagions is essential for disease surveillance and prevention, so a rapid and sensitive approach is needed. Herein, a recombinase polymerase amplification EXO (RPA-EXO) assay and RPA with a lateral flow dipstick (RPA-LFD) were produced for testing A. salmonicida. The RPA-EXO and RPA-LFD primer sets were devised based on the conserved fragment sequence of the vapA gene. Then, RPA-EXO and RPA-LFD reaction systems were established, and the reaction temperature and time were optimized. After optimization, the RPA-EXO method was capable of testing A. salmonicida within 10 min, and the RPA-LFD method could detect A. salmonicida in only 5 min. The RPA-EXO and RPA-LFD methods exhibited high specificity with no cross-reaction with other strains. To assess sensitivity, a partial vapA gene was cloned, and serial plasmid dilutions were created ranging from 1 × 106 to 1 × 10-1 copies/μL. The detection limit of RPA-EXO was 1 × 102 copies/μL, and the detection limit of RPA-LFD was 1 copy/μL. For spiked turbot tissue samples, the sensitivity detection of A. salmonicida was 1.2 × 101 CFU/mL and 1.2 CFU/mL by RPA-EXO and RPA-LFD, respectively. In comparative analyses of clinical samples, the diagnostic results of RPA-EXO and RPA-LFD were compared with those of the standard conventional PCR test and showed nearly 100% consistency. Therefore, our RPA-EXO and RPA-LFD assays exhibited excellent specificity and sensitivity, which provided two simple, fast and dependable methods to conduct large-scale field investigations of A. salmonicida in resource-limited settings.
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Affiliation(s)
- Shun Zhou
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xujia Zheng
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Zongrui Yang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Qing Huang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jingyuan Yi
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Lin Su
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Baoshan Guo
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yunji Xiu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
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9
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Xiang X, Diao E, Shang Y, Song M, He Y. Rapid quantitative detection of Vibrio parahaemolyticus via high-fidelity target-based microfluidic identification. Food Res Int 2022; 162:112032. [PMID: 36461252 DOI: 10.1016/j.foodres.2022.112032] [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: 07/06/2022] [Revised: 09/12/2022] [Accepted: 10/04/2022] [Indexed: 11/26/2022]
Abstract
With the rapid development of logistics, a growing number of pathogenic microorganisms has the means to spread worldwide using food as a carrier; thus, there is an urgent need to develop effective detection strategies to ensure food safety. By combining novel markers identified by pan-genome analysis and a digital recombinase-aided amplification (RAA) detection method based on a microfluidic chip, a strategy of high-fidelity target-based microfluidic identification (HFTMI) has been developed. Herein, a proof-of-concept study of HFTMI for rapid pathogen detection of V. parahaemolyticus was investigated. Specific primers designed for the gene group_41170 identified in the pan-genome analysis showed high sensitivity and a broad spectrum for the detection of V. parahaemolyticus. Different power systems were investigated to increase the partition rate on specifically designed chamber-based digital chips. The performance of HFTMI was greatly improved compared with qPCR. Collectively, this novel HFTMI system provides more reliable guidance for food safety testing.
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Affiliation(s)
- Xinran Xiang
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, School of Life Science, Huaiyin Normal University, Huai'an 223300, China; School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Enjie Diao
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake, School of Life Science, Huaiyin Normal University, Huai'an 223300, China
| | - Yuting Shang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Minghui Song
- Hainan Hospital of Chinese PLA General Hospital, Sanya 572000, China.
| | - Yinglong He
- College of Agriculture/Tree Peony, Henan University of Science and Technology, Luoyang 471023, China.
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10
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Development of a Real-Time Recombinase-Aided Amplification Method to Rapidly Detect Methicillin-Resistant Staphylococcus aureus. Microorganisms 2022; 10:microorganisms10122351. [PMID: 36557604 PMCID: PMC9784193 DOI: 10.3390/microorganisms10122351] [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: 09/04/2022] [Revised: 10/03/2022] [Accepted: 10/31/2022] [Indexed: 11/29/2022] Open
Abstract
Methicillin-resistant staphylococcus aureus (MRSA) is a major pathogen responsible for human hospital and community-onset diseases and severe invasive livestock infections. Rapid detection of MRSA is essential to control the spread of MRSA. Conventional identification methods and antibacterial susceptibility tests of MRSA are time-consuming. The commonly used qPCR assay also has the disadvantages of being complicated and expensive, restricting its application in resource-limited clinical laboratories. Here, a real-time fluorescent recombinase-assisted amplification (RAA) assay targeting the most conserved regions within the mecA gene of MRSA was developed and evaluated to detect MRSA. The detection limit of this assay was determined to be 10 copies/reaction of positive plasmids. The established RAA assay showed high specificity for MRSA detection without cross-reactivities with other clinically relevant bacteria. The diagnostic performance of real-time RAA was evaluated using 67 clinical S. aureus isolates from dairy farms, which were detected in parallel using the TaqMan probe qPCR assay. The results showed that 56 and 54 samples tested positive for MRSA by RAA and qPCR, respectively. The overall agreement between both assays was 97.01% (65/67), with a kappa value of 0.9517 (p < 0.001). Further linear regression analysis demonstrated that the detection results between the two assays were significantly correlated (R2 = 0.9012, p < 0.0001), indicating that this RAA assay possesses similar detection performance to the qPCR assay. In conclusion, our newly established RAA assay is a time-saving and convenient diagnostic tool suitable for MRSA detection and screening.
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11
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Agarwal P, Toley BJ. Unreacted Labeled PCR Primers Inhibit the Signal in a Nucleic Acid Lateral Flow Assay as Elucidated by a Transport Reaction Model. ACS MEASUREMENT SCIENCE AU 2022; 2:317-324. [PMID: 36785570 PMCID: PMC9885946 DOI: 10.1021/acsmeasuresciau.2c00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Factors that affect the performance of the nucleic acid lateral flow assay (NALFA) have not been well studied. In this work, we identify two important phenomena that negatively affect signal intensities during the detection of PCR products using NALFA: (i) the presence of unreacted PCR primers, and (ii) the presence of excess PCR amplicons. This is the first report that highlights the negative effect of unreacted PCR primers on NALFA. The negative effect of excess amplicons, while not explicitly reported for NALFAs, emanates from an identical phenomenon in lateral flow immunoassays known as the "hook effect". We show that the above effects may be alleviated by increasing the concentration of capture antibodies at the test line and the concentration of reporter moieties (gold nanoparticles). To demonstrate these, we utilized a PCR assay in which both primers were end-labeled, to generate dually end-labeled (bi-labeled) PCR amplicons of 230 bp length. To provide mechanistic understanding of these phenomena, we present the first transport-reaction model of NALFA, the results of which qualitatively matched all observed phenomena. Based on these results, we provide recommendations for the optimal design of PCR for NALFA detection.
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Affiliation(s)
- Priyanka Agarwal
- Department
of Chemical Engineering, Indian Institute
of Science, Bengaluru, Karnataka 560012, India
| | - Bhushan J. Toley
- Department
of Chemical Engineering, Indian Institute
of Science, Bengaluru, Karnataka 560012, India
- Center
for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru, Karnataka 560012, India
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12
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Hou L, Li D, Zhang N, Zhao J, Zhao Y, Sun X. Development of an isothermal recombinase-aided amplification assay for the rapid and visualized detection of Klebsiella pneumoniae. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3879-3886. [PMID: 34936095 DOI: 10.1002/jsfa.11737] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/16/2021] [Accepted: 12/22/2021] [Indexed: 05/25/2023]
Abstract
BACKGROUND Klebsiella pneumoniae is a zoonotic opportunistic pathogen, leading to severe infections in dairy cows and humans. Efficient, on-site and accurate detection of K. pneumoniae is necessary to reduce the harm of cow mastitis and human infections. The objective of this study was to establish a recombinase-aided amplification (RAA) method combined with lateral flow dipstick (LFD) for rapid detection of K. pneumoniae. RESULTS The primer concentration, incubation temperature and incubation time of the RAA reaction were optimized. When the primer concentration was 100 nmol L-1 , the strongest band could be obtained by incubation at 37 °C for 20 min. The RAA-LFD method had high specificity to K. pneumoniae and showed no cross-reaction with other pathogens. In addition, the detection limit of RAA-LFD for K. pneumoniae was 20 fg genomic DNA and 2.5 × 102 CFU mL-1 of bacteria in pure culture, which is 100 times higher than that of polymerase chain reaction (PCR) detection. Moreover, the RAA-LFD method can detect K. pneumoniae at initial concentrations as low as 2.5 CFU per 25 mL in artificially spiked milk samples after at least incubation for 6 h. Importantly, RAA-LFD had a high agreement with a test accuracy of 96.9%, compared with the biochemical identification method. Also, the detection accuracy of RAA-LFD was higher than that of the PCR assay (95.3%). CONCLUSIONS The results demonstrated that the RAA-LFD assay is an accurate, sensitive, simple and point-of-use detection method for K. pneumoniae, which could be used as a potential application in the research laboratory and for disease diagnosis. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Laiwang Hou
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
| | - Darong Li
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
| | - Ni Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
| | - Jiayi Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai, People's Republic of China
- Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, Shanghai, People's Republic of China
| | - Xiaohong Sun
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai, People's Republic of China
- Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, Shanghai, People's Republic of China
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13
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Zhao J, Li Y, Xue Q, Zhu Z, Zou M, Fang F. A novel rapid visual detection assay for Toxoplasma gondii combining recombinase-aided amplification and lateral flow dipstick coupled with CRISPR-Cas13a fluorescence (RAA-Cas13a-LFD). Parasite 2022; 29:21. [PMID: 35420541 PMCID: PMC9009239 DOI: 10.1051/parasite/2022021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 03/28/2022] [Indexed: 12/26/2022] Open
Abstract
Toxoplasmosis, a parasitic disease resulting from Toxoplasma gondii infection, remains prevalent worldwide, and causes great harm to immunodepressed patients, pregnant women and newborns. Although various molecular approaches to detect T. gondii infection are available, they are either costly or technically complex. This study aimed at developing a rapid visual detection assay using recombinase-aided amplification (RAA) and lateral flow dipstick (LFD) coupled with CRISPR-Cas13a fluorescence (RAA-Cas13a-LFD) to detect T. gondii. The RAA-Cas13a-LFD assay was performed in an incubator block at 37 °C within 2 h, and the amplification results were visualized and determined through LFD by the naked eye. The detection limit was 1 × 10-6 ng/μL by our developed RAA-Cas13a-LFD protocol, 100-fold higher than that by qPCR assay (1 × 10-8 ng/μL). No cross-reaction occurred either with the DNA of human blood or Ascaris lumbricoides, Digramma interrupta, Entamoeba coli, Fasciola gigantica, Plasmodium vivax, Schistosoma japonicum, Taenia solium, and Trichinella spiralis, and the positive rate by RAA-Cas13a-LFD assay was identical to that by qPCR assay (1.50% vs. 1.50%) in detecting T. gondii infection in the unknown blood samples obtained from clinical settings. Our findings demonstrate that this RAA-Cas13a-LFD assay is not only rapid, sensitive, and specific and allows direct visualization by the naked eye, but also eliminates sophisticated and costly equipment. More importantly, this technique can be applied to on-site surveillance of T. gondii.
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Affiliation(s)
- Jinhong Zhao
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, Anhui, China - Provincial Key Laboratory of Active Biological Macro-Molecules, Wuhu 241002, Anhui, China
| | - Yuanyuan Li
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, Anhui, China
| | - Qiqi Xue
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, Anhui, China
| | - Zhiwei Zhu
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, Anhui, China
| | - Minghui Zou
- Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, Anhui, China
| | - Fang Fang
- Department of Clinical Laboratory, The First Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, China
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14
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Zhu X, Zhao Y, Zhu C, Wang Y, Liu Y, Su J. Rapid detection of cagA-positive Helicobacter pylori based on duplex recombinase aided amplification combined with lateral flow dipstick assay. Diagn Microbiol Infect Dis 2022; 103:115661. [DOI: 10.1016/j.diagmicrobio.2022.115661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/20/2022] [Accepted: 02/06/2022] [Indexed: 11/03/2022]
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15
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Leon F, Pinchon E, Mayran C, Daynès A, Morvan F, Molès JP, Cantaloube JF, Fournier-Wirth C. Magnetic Field-Enhanced Agglutination Readout Combined With Isothermal Reverse Transcription Recombinase Polymerase Amplification for Rapid and Sensitive Molecular Detection of Dengue Virus. Front Chem 2022; 9:817246. [PMID: 35141206 PMCID: PMC8819590 DOI: 10.3389/fchem.2021.817246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 12/24/2021] [Indexed: 11/13/2022] Open
Abstract
Among the numerous molecular diagnostic methods, isothermal reverse transcription recombinase polymerase amplification (RT-RPA) is a simple method that has high sensitivity and avoids the use of expensive instruments. However, detection of amplified genomes often requires a fluorescence readout on costly readers or migration on a lateral flow strip with a subjective visual reading. Aiming to establish a new approach to rapidly and sensitively detect viruses, we combined RT-RPA with a magnetic field-enhanced agglutination (MFEA) assay and assessed the ability of this method to detect the dengue virus (DENV). Magnetization cycles accelerated the capture of amplified DENV genomes between functionalized magnetic nanoparticles by a fast chaining process to less than 5 min; the agglutination was quantified by simple turbidimetry. A total of 37 DENV RNA+ and 30 DENV RNA− samples were evaluated with this combined method. The sensitivity and specificity were 89.19% (95% CI, 72.75–100.00%) and 100% (95% CI, 81.74–100.00%), respectively. This approach provides a solution for developing innovative diagnostic assays for the molecular detection of emerging infections.
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Affiliation(s)
- Fanny Leon
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
| | - Elena Pinchon
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
| | - Charly Mayran
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
| | | | - François Morvan
- Institut des Biomolecules Max Mousseron (IBMM), Université de Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jean-Pierre Molès
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
| | - Jean-François Cantaloube
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
| | - Chantal Fournier-Wirth
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Université de Montpellier, Etablissement Français du Sang, Inserm, Université des Antilles, Montpellier, France
- *Correspondence: Chantal Fournier-Wirth,
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16
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Lateral flow assays (LFA) as an alternative medical diagnosis method for detection of virus species: The intertwine of nanotechnology with sensing strategies. Trends Analyt Chem 2021; 145:116460. [PMID: 34697511 PMCID: PMC8529554 DOI: 10.1016/j.trac.2021.116460] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Viruses are responsible for multiple infections in humans that impose huge health burdens on individuals and populations worldwide. Therefore, numerous diagnostic methods and strategies have been developed for prevention, management, and decreasing the burden of viral diseases, each having its advantages and limitations. Viral infections are commonly detected using serological and nucleic acid-based methods. However, these conventional and clinical approaches have some limitations that can be resolved by implementing other detector devices. Therefore, the search for sensitive, selective, portable, and costless approaches as efficient alternative clinical methods for point of care testing (POCT) analysis has gained much attention in recent years. POCT is one of the ultimate goals in virus detection, and thus, the tests need to be rapid, specific, sensitive, accessible, and user-friendly. In this review, after a brief overview of viruses and their characteristics, the conventional viral detection methods, the clinical approaches, and their advantages and shortcomings are firstly explained. Then, LFA systems working principles, benefits, classification are discussed. Furthermore, the studies regarding designing and employing LFAs in diagnosing different types of viruses, especially SARS-CoV-2 as a main concern worldwide and innovations in the LFAs' approaches and designs, are comprehensively discussed here. Furthermore, several strategies addressed in some studies for overcoming LFA limitations like low sensitivity are reviewed. Numerous techniques are adopted to increase sensitivity and perform quantitative detection. Employing several visualization methods, using different labeling reporters, integrating LFAs with other detection methods to benefit from both LFA and the integrated detection device advantages, and designing unique membranes to increase reagent reactivity, are some of the approaches that are highlighted.
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17
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Mu D, Zhou D, Xie G, Liu J, Xiong Q, Feng X, Xu H. The fluorescent probe-based recombinase-aided amplification for rapid detection of Escherichia coli O157:H7. Mol Cell Probes 2021; 60:101777. [PMID: 34737039 DOI: 10.1016/j.mcp.2021.101777] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/21/2021] [Accepted: 10/29/2021] [Indexed: 01/21/2023]
Abstract
Escherichia coli O157:H7 (E. coli O157:H7) is a common foodborne morbigenous microorganism, which can spread through fecal-oral transmission. Humans can be infected by ingesting foods and water contaminated with E. coli O157:H7, which can cause various symptoms. In present study, we have successfully developed a quick and hypersensitive fluorescent probe-based Recombinase-aided amplification (RAA) method and applied in E. coli O157:H7 detection at 39 °C in 20 min. The sensitivity of the assay in pure E. coli O157:H7 suspension was 5.6 × 100 CFU/mL. The fluorescent probe-based RAA assay was further applied in three samples, and the limit of detection (LOD) in skimmed milk, lettuces and lake water was 5.4 × 101 CFU/mL, 7.9 × 101 CFU/mL and 5.2 × 101 CFU/mL, separately. This method showed a high sensitivity and short detection time, which has the feasible application in on-site test in real samples.
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Affiliation(s)
- Dan Mu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Donggen Zhou
- Ningbo International Travel Healthcare Center (Ningbo Customs Port Outpatient Department), Ningbo, 315010, PR China.
| | - Guoyang Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Ju Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Qin Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Xiaoyan Feng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
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18
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Development of a reverse transcription recombinase-aided amplification assay for detection of Getah virus. Sci Rep 2021; 11:20060. [PMID: 34625631 PMCID: PMC8501081 DOI: 10.1038/s41598-021-99734-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/29/2021] [Indexed: 02/08/2023] Open
Abstract
GETV, an arbo-borne zoonotic virus of the genus Alphavirus, which causes diarrhea and reproduction disorders in swine, lead to serious economic losses to the swine industry in China. At present, the existing methods for GETV detection are time-consuming and low sensitivity, so, a rapid, accurate and sensitive GETV detection method is urgently needed. In this study, a fluorescent reverse transcription recombinase-assisted amplification method (RT-RAA) was successfully established for the rapid detection of GETV. The sensitivity of this method to GETV was 8 copies/reaction and 20 TCID50/reaction. No cross-reaction with other viruses. A total of 118 samples were prepared for GETV detection using fluorescent RT-RAA and SYBR Green I RT-qPCR, the coincidence rate of the two methods was 100%. The results suggest that the RT-RAA method is rapid, sensitive and specific for GETV detection and can be applied in the clinical.
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19
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Bukkitgar SD, Shetti NP, Aminabhavi TM. Electrochemical investigations for COVID-19 detection-A comparison with other viral detection methods. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 420:127575. [PMID: 33162783 PMCID: PMC7605744 DOI: 10.1016/j.cej.2020.127575] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/07/2020] [Accepted: 10/26/2020] [Indexed: 05/02/2023]
Abstract
Virus-induced infection such as SARS-CoV-2 is a serious threat to human health and the economic setback of the world. Continued advances in the development of technologies are required before the viruses undergo mutation. The low concentration of viruses in environmental samples makes the detection extremely challenging; simple, accurate and rapid detection methods are in urgent need. Of all the analytical techniques, electrochemical methods have the established capabilities to address the issues. Particularly, the integration of nanotechnology would allow miniature devices to be made available at the point-of-care. This review outlines the capabilities of electrochemical methods in conjunction with nanotechnology for the detection of SARS-CoV-2. Future directions and challenges of the electrochemical biosensors for pathogen detection are covered including wearable and conformal biosensors, detection of plant pathogens, multiplexed detection, and reusable biosensors for on-site monitoring, thereby providing low-cost and disposable biosensors.
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Key Words
- AIV H5N1, Avian influenza
- AIV, Avian influenza virus
- ASFV, African swine fever virus
- BVDV, Bovine viral diarrhea virus
- CGV, Chikungunya viruses
- CMV, Cucumber mosaic virus
- COVID-19
- CSFV, Classic swine fever virus
- CV, Cyclic voltammetry
- DAstV-1, Duck astrovirus 1
- DAstV-2, Duck astrovirus 2
- DENV, Dengue virus
- DEV, Duck enteritis virus
- DHAV-1, Duck hepatitis A virus 1
- DHAV-3, Duck hepatitis A virus 3
- DPV, Differential pulse voltammetry
- DRV-1, Duck reovirus 1
- DRV-2, Duck reovirus 2
- Detection
- EBV, Epstein-Barr virus
- EIS, Electric impedance spectroscopy
- EPC, External positive controls
- EV, Human enterovirus
- EV71, Human enterovirus 71
- Electrochemical sensor
- FMI SMOF, Fluorescence molecularly imprinted sensor based on a metal–organic framework
- GCE, Glassy carbon electrode
- GCFaV-1, Ginger chlorotic fleck associated virus 1
- GCFaV-2, Ginger chlorotic fleck-associated virus 2
- GEV VN-96, Gastroenteritis virus VN-96
- GPV, Goose parvovirus
- HHV, Human herpes virus 6
- HIAV, Human influenza A viruses
- HPB19, Human parvovirus B19
- HSV, Herpes simplex
- IAV, influenza A virus
- IEA, Interdigitated electrode array
- IMA, Interdigitated microelectrode array
- INAA, Isothermal nucleic acid amplification-based
- JEV, Japanese encephalitis virus
- LAMP, Loop-Mediated Isothermal Amplification
- LSV, Linear sweep voltammetry
- MERS, Middle East respiratory syndrome
- MIEC, Molecularly imprinted electrochemiluminescence
- MNV, Murine norovirus
- MeV, Measles virus
- NNV, Nervous necrosis virus
- Nanotechnology
- PBoV, Porcine bocavirus
- PCNAME, Pt-coated nanostructured alumina membrane electrode
- PCR
- PCRLFS, Polymerase Chain Reaction with a lateral flow strip with a lateral flow strip
- PCV, Porcine circovirus 3
- PEDV, Porcine epidemic diarrhoea virus
- PRRSV, porcine reproductive and respiratory syndrome virus
- PSV, Pseudorabies virus
- RCA, Rolling circle amplification
- RGO, Reduced graphene oxide
- RT-LAMP-VF, RT-LAMP and a vertical flow visualization strip
- RV, Rubella virus
- SARS, Severe acute respiratory syndrome
- SIVH1N1, Swine influenza virus
- SWV, Square wave voltammetry
- TGEV, transmissible gastroenteritis coronavirus
- TMUV, Tembusu virus
- USEGFET, Ultra-sensitive electrolyte-gated field-effect transistor
- VZV, Varicella-zoster virus
- VZV, varicella-Zoster virus
- Viruses
- ZV, Zika virus
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Affiliation(s)
- Shikandar D Bukkitgar
- Centre for Electrochemical Science and Materials, Department of Chemistry, K.L.E. Institute of Technology, Gokul, Hubballi 580030, Karnataka, India
| | - Nagaraj P Shetti
- Centre for Electrochemical Science and Materials, Department of Chemistry, K.L.E. Institute of Technology, Gokul, Hubballi 580030, Karnataka, India
| | - Tejraj M Aminabhavi
- Pharmaceutical Engineering, Soniya College of Pharmacy, Dharwad 580-007, India
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20
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Dare AJ, Knapp GC, Romanoff A, Olasehinde O, Famurewa OC, Komolafe AO, Olatoke S, Katung A, Alatise OI, Kingham TP. High-burden Cancers in Middle-income Countries: A Review of Prevention and Early Detection Strategies Targeting At-risk Populations. Cancer Prev Res (Phila) 2021; 14:1061-1074. [PMID: 34507972 DOI: 10.1158/1940-6207.capr-20-0571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/06/2021] [Accepted: 08/23/2021] [Indexed: 12/09/2022]
Abstract
Cancer incidence is rising in low- and especially middle-income countries (MIC), driven primarily by four high-burden cancers (breast, cervix, lung, colorectal). By 2030, more than two-thirds of all cancer deaths will occur in MICs. Prevention and early detection are required alongside efforts to improve access to cancer treatment. Successful strategies for decreasing cancer mortality in high-income countries are not always effective, feasible or affordable in other countries. In this review, we evaluate strategies for prevention and early detection of breast, cervix, lung, and colorectal cancers, focusing on modifiable risk factors and high-risk subpopulations. Tobacco taxation, human papilloma virus vaccination, cervical cancer screen-and-treat strategies, and efforts to reduce patient and health system-related delays in the early detection of breast and colorectal cancer represent the highest yield strategies for advancing cancer control in many MICs. An initial focus on high-risk populations is appropriate, with increasing population coverage as resources allow. These strategies can deliver significant cancer mortality gains, and serve as a foundation from which countries can develop comprehensive cancer control programs. Investment in national cancer surveillance infrastructure is needed; the absence of national cancer data to identify at-risk groups remains a barrier to the development of context-specific cancer control strategies.
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Affiliation(s)
- Anna J Dare
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York.,Global Cancer Disparities Initiative, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Gregory C Knapp
- Global Cancer Disparities Initiative, Memorial Sloan Kettering Cancer Center, New York, New York.,Department of Surgery, Division of General Surgery, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Anya Romanoff
- Global Cancer Disparities Initiative, Memorial Sloan Kettering Cancer Center, New York, New York.,Department of Global Health and Health System Design, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | | | - Akinwumi O Komolafe
- Department of Morbid Anatomy and Forensic Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Samuel Olatoke
- Department of Surgery, University of Ilorin, Ilorin, Nigeria
| | - Aba Katung
- Department of Surgery, Federal Medical College - Owo, Owo, Nigeria
| | | | - T Peter Kingham
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York. .,Global Cancer Disparities Initiative, Memorial Sloan Kettering Cancer Center, New York, New York
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21
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Di Nardo F, Chiarello M, Cavalera S, Baggiani C, Anfossi L. Ten Years of Lateral Flow Immunoassay Technique Applications: Trends, Challenges and Future Perspectives. SENSORS (BASEL, SWITZERLAND) 2021; 21:5185. [PMID: 34372422 PMCID: PMC8348896 DOI: 10.3390/s21155185] [Citation(s) in RCA: 149] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 12/22/2022]
Abstract
The Lateral Flow Immunoassay (LFIA) is by far one of the most successful analytical platforms to perform the on-site detection of target substances. LFIA can be considered as a sort of lab-in-a-hand and, together with other point-of-need tests, has represented a paradigm shift from sample-to-lab to lab-to-sample aiming to improve decision making and turnaround time. The features of LFIAs made them a very attractive tool in clinical diagnostic where they can improve patient care by enabling more prompt diagnosis and treatment decisions. The rapidity, simplicity, relative cost-effectiveness, and the possibility to be used by nonskilled personnel contributed to the wide acceptance of LFIAs. As a consequence, from the detection of molecules, organisms, and (bio)markers for clinical purposes, the LFIA application has been rapidly extended to other fields, including food and feed safety, veterinary medicine, environmental control, and many others. This review aims to provide readers with a 10-years overview of applications, outlining the trends for the main application fields and the relative compounded annual growth rates. Moreover, future perspectives and challenges are discussed.
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Affiliation(s)
- Fabio Di Nardo
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (S.C.); (C.B.); (L.A.)
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22
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Brunauer A, Verboket RD, Kainz DM, von Stetten F, Früh SM. Rapid Detection of Pathogens in Wound Exudate via Nucleic Acid Lateral Flow Immunoassay. BIOSENSORS-BASEL 2021; 11:bios11030074. [PMID: 33800856 PMCID: PMC8035659 DOI: 10.3390/bios11030074] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/24/2021] [Accepted: 03/03/2021] [Indexed: 12/15/2022]
Abstract
The rapid detection of pathogens in infected wounds can significantly improve the clinical outcome. Wound exudate, which can be collected in a non-invasive way, offers an attractive sample material for the detection of pathogens at the point-of-care (POC). Here, we report the development of a nucleic acid lateral flow immunoassay for direct detection of isothermally amplified DNA combined with fast sample preparation. The streamlined protocol was evaluated using human wound exudate spiked with the opportunistic pathogen Pseudomonas aeruginosa that cause severe health issues upon wound colonization. A detection limit of 2.1 × 105 CFU per mL of wound fluid was achieved, and no cross-reaction with other pathogens was observed. Furthermore, we integrated an internal amplification control that excludes false negative results and, in combination with the flow control, ensures the validity of the test result. The paper-based approach with only three simple hands-on steps has a turn-around time of less than 30 min and covers the complete analytical process chain from sample to answer. This newly developed workflow for wound fluid diagnostics has tremendous potential for reliable pathogen POC testing and subsequent target-oriented therapy.
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Affiliation(s)
- Anna Brunauer
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - René D Verboket
- Department of Trauma-, Hand- and Reconstructive Surgery, University Hospital Frankfurt, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany
| | - Daniel M Kainz
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Felix von Stetten
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Susanna M Früh
- Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Hahn-Schickard, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
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23
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Jain S, Nehra M, Kumar R, Dilbaghi N, Hu T, Kumar S, Kaushik A, Li CZ. Internet of medical things (IoMT)-integrated biosensors for point-of-care testing of infectious diseases. Biosens Bioelectron 2021; 179:113074. [PMID: 33596516 PMCID: PMC7866895 DOI: 10.1016/j.bios.2021.113074] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 02/06/2023]
Abstract
On global scale, the current situation of pandemic is symptomatic of increased incidences of contagious diseases caused by pathogens. The faster spread of these diseases, in a moderately short timeframe, is threatening the overall population wellbeing and conceivably the economy. The inadequacy of conventional diagnostic tools in terms of time consuming and complex laboratory-based diagnosis process is a major challenge to medical care. In present era, the development of point-of-care testing (POCT) is in demand for fast detection of infectious diseases along with “on-site” results that are helpful in timely and early action for better treatment. In addition, POCT devices also play a crucial role in preventing the transmission of infectious diseases by offering real-time testing and lab quality microbial diagnosis within minutes. Timely diagnosis and further treatment optimization facilitate the containment of outbreaks of infectious diseases. Presently, efforts are being made to support such POCT by the technological development in the field of internet of medical things (IoMT). The IoMT offers wireless-based operation and connectivity of POCT devices with health expert and medical centre. In this review, the recently developed POC diagnostics integrated or future possibilities of integration with IoMT are discussed with focus on emerging and re-emerging infectious diseases like malaria, dengue fever, influenza A (H1N1), human papilloma virus (HPV), Ebola virus disease (EVD), Zika virus (ZIKV), and coronavirus (COVID-19). The IoMT-assisted POCT systems are capable enough to fill the gap between bioinformatics generation, big rapid analytics, and clinical validation. An optimized IoMT-assisted POCT will be useful in understanding the diseases progression, treatment decision, and evaluation of efficacy of prescribed therapy.
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Affiliation(s)
- Shikha Jain
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - Monika Nehra
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India; Department of Mechanical Engineering, UIET, Panjab University, Chandigarh, 160014, India
| | - Rajesh Kumar
- Department of Mechanical Engineering, UIET, Panjab University, Chandigarh, 160014, India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - TonyY Hu
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India.
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Health Systems Engineering, Department of Natural Sciences, Florida Polytechnic University, Lakeland, FL, 33805-8531, United States.
| | - Chen-Zhong Li
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, 70112, USA; Department of Biomedical Engineering, Florida International University, Miami, FL, 33174, USA.
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24
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Zhang B, Zhu Z, Li F, Xie X, Ding A. Rapid and sensitive detection of hepatitis B virus by lateral flow recombinase polymerase amplification assay. J Virol Methods 2021; 291:114094. [PMID: 33549573 DOI: 10.1016/j.jviromet.2021.114094] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023]
Abstract
Hepatitis B virus (HBV) infection is a major public health priority. In the present study, a lateral flow strip combined with the recombinase polymerase amplification (LF-RPA) assay was developed and evaluated for rapid HBV detection. A primer/probe pair targeting the conserved region of the HBV genome was designed and applied to the LF-RPA. TheRPA was achieved at the isothermal temperature of 39℃ for 30 min, and the RPA products were detected using the LF test. DNA extraction, RPA reaction and endpoint detection will take about 70 min. The LF-RPA assay could detect HBV at as low as 10 copies/reaction, with no cross-reactions with other common pathogens. The LF-RPA assay was performed on 85 samples. Of these, 36 samples tested HBV positive, whereas 49 were negative. Similar results were obtained using the conventional polymerase chain reaction method. Thus, the newly developed LF-RPA assay can be an improved diagnostic tool for rapid and simple HBV detection.
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Affiliation(s)
- Bashan Zhang
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China.
| | - Zinian Zhu
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Fei Li
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Xiaoyan Xie
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Aijiao Ding
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
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Ahn G, Lee S, Lee SH, Baek YH, Song MS, Kim YH, Ahn JY. Zika virus lateral flow assays using reverse transcription-loop-mediated isothermal amplification. RSC Adv 2021; 11:17800-17808. [PMID: 35480212 PMCID: PMC9033246 DOI: 10.1039/d1ra01227d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Our study suggest that ZIKV RT-LAMP combined with LFA could serve as a rapid, accurate, and independent point-of-care detection method for ZIKV outbreaks.
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Affiliation(s)
- Gna Ahn
- Department of Microbiology
- Chungbuk National University
- Cheongju 28644
- South Korea
| | - SeonHyung Lee
- Department of Biological Sciences and Biotechnology
- Chungbuk National University
- Cheongju 28644
- South Korea
| | - Se Hee Lee
- Department of Microbiology
- Chungbuk National University
- Cheongju 28644
- South Korea
| | - Yun Hee Baek
- College of Medicine
- Medical Research Institute
- Chungbuk National University
- Cheongju 28644
- South Korea
| | - Min-Suk Song
- College of Medicine
- Medical Research Institute
- Chungbuk National University
- Cheongju 28644
- South Korea
| | - Yang-Hoon Kim
- Department of Microbiology
- Chungbuk National University
- Cheongju 28644
- South Korea
- Department of Biological Sciences and Biotechnology
| | - Ji-Young Ahn
- Department of Microbiology
- Chungbuk National University
- Cheongju 28644
- South Korea
- Department of Biological Sciences and Biotechnology
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Zheng YZ, Chen JT, Li J, Wu XJ, Wen JZ, Liu XZ, Lin LY, Liang XY, Huang HY, Zha GC, Yang PK, Li LJ, Zhong TY, Liu L, Cheng WJ, Song XN, Lin M. Reverse Transcription Recombinase-Aided Amplification Assay With Lateral Flow Dipstick Assay for Rapid Detection of 2019 Novel Coronavirus. Front Cell Infect Microbiol 2021; 11:613304. [PMID: 33598439 PMCID: PMC7882697 DOI: 10.3389/fcimb.2021.613304] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 01/08/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The emerging Coronavirus Disease-2019 (COVID-19) has challenged the public health globally. With the increasing requirement of detection for SARS-CoV-2 outside of the laboratory setting, a rapid and precise Point of Care Test (POCT) is urgently needed. METHODS Targeting the nucleocapsid (N) gene of SARS-CoV-2, specific primers, and probes for reverse transcription recombinase-aided amplification coupled with lateral flow dipstick (RT-RAA/LFD) platform were designed. For specificity evaluation, it was tested with human coronaviruses, human influenza A virus, influenza B viruses, respiratory syncytial virus, and hepatitis B virus, respectively. For sensitivity assay, it was estimated by templates of recombinant plasmid and pseudovirus of SARS-CoV-2 RNA. For clinical assessment, 100 clinical samples (13 positive and 87 negatives for SARS-CoV-2) were tested via quantitative reverse transcription PCR (RT-qPCR) and RT-RAA/LFD, respectively. RESULTS The limit of detection was 1 copies/μl in RT-RAA/LFD assay, which could be conducted within 30 min at 39°C, without any cross-reaction with other human coronaviruses and clinical respiratory pathogens. Compared with RT-qPCR, the established POCT assay offered 100% specificity and 100% sensitivity in the detection of clinical samples. CONCLUSION This work provides a convenient POCT tool for rapid screening, diagnosis, and monitoring of suspected patients in SARS-CoV-2 endemic areas.
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Affiliation(s)
- Yu-Zhong Zheng
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, China
| | - Jiang-Tao Chen
- Department of Medical Laboratory, Huizhou Central People’s Hospital, Huizhou, China
| | - Jian Li
- Department of Human Parasitology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Xian-Jing Wu
- Department of Medical Laboratory, Huizhou Central People’s Hospital, Huizhou, China
| | - Jin-Zhou Wen
- Department of Medical Laboratory, Center for Disease Control and Prevention, Chaozhou, China
| | - Xiang-Zhi Liu
- Department of Medical Laboratory, Chaozhou People’s Hospital, Shantou University Medical College, Chaozhou, China
| | - Li-Yun Lin
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, China
| | - Xue-Yan Liang
- Department of Medical Laboratory, Huizhou Central People’s Hospital, Huizhou, China
- Department of Medical Laboratory, Chaozhou People’s Hospital, Shantou University Medical College, Chaozhou, China
| | - Hui-Ying Huang
- Department of Medical Laboratory, Chaozhou People’s Hospital, Shantou University Medical College, Chaozhou, China
| | - Guang-Cai Zha
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, China
| | - Pei-Kui Yang
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, China
| | - Lie-Jun Li
- Department of Research and Development, Chaozhou Hybribio Limited Corporation, Chaozhou, China
| | - Tian-Yu Zhong
- Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Long Liu
- Department of Human Parasitology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Wei-Jia Cheng
- Department of Human Parasitology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Xiao-Nan Song
- Department of Human Parasitology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Min Lin
- School of Food Engineering and Biotechnology, Hanshan Normal University, Chaozhou, China
- *Correspondence: Min Lin,
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