1
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Mbani CJ, Nekoua MP, Moukassa D, Hober D. The Fight against Poliovirus Is Not Over. Microorganisms 2023; 11:1323. [PMID: 37317297 DOI: 10.3390/microorganisms11051323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/13/2023] [Accepted: 05/14/2023] [Indexed: 06/16/2023] Open
Abstract
Poliovirus (PV), the virus that causes both acute poliomyelitis and post-polio syndrome, is classified within the Enterovirus C species, and there are three wild PV serotypes: WPV1, WPV2 and WPV3. The launch of the Global Polio Eradication Initiative (GPEI) in 1988 eradicated two of the three serotypes of WPV (WPV2 and WPV3). However, the endemic transmission of WPV1 persists in Afghanistan and Pakistan in 2022. There are cases of paralytic polio due to the loss of viral attenuation in the oral poliovirus vaccine (OPV), known as vaccine-derived poliovirus (VDPV). Between January 2021 and May 2023, a total of 2141 circulating VDPV (cVDPV) cases were reported in 36 countries worldwide. Because of this risk, inactivated poliovirus (IPV) is being used more widely, and attenuated PV2 has been removed from OPV formulations to obtain bivalent OPV (containing only types 1 and 3). In order to avoid the reversion of attenuated OPV strains, the new OPV, which is more stable due to genome-wide modifications, as well as sabin IPV and virus-like particle (VLP) vaccines, is being developed and offers promising solutions for eradicating WP1 and VDPV.
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Affiliation(s)
- Chaldam Jespère Mbani
- Laboratoire de Virologie URL3610, Université de Lille, CHU Lille, 59000 Lille, France
- Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences et Technique, Université Marien Ngouabi, Brazzaville BP 69, Congo
| | | | - Donatien Moukassa
- Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences et Technique, Université Marien Ngouabi, Brazzaville BP 69, Congo
| | - Didier Hober
- Laboratoire de Virologie URL3610, Université de Lille, CHU Lille, 59000 Lille, France
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2
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A One-Step Reverse-transcription Recombinase aided PCR Assay for the Rapid and Sensitive Detection of Human Enteroviruses. BIOSAFETY AND HEALTH 2023. [DOI: 10.1016/j.bsheal.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023] Open
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3
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Suther C, Stoufer S, Zhou Y, Moore MD. Recent Developments in Isothermal Amplification Methods for the Detection of Foodborne Viruses. Front Microbiol 2022; 13:841875. [PMID: 35308332 PMCID: PMC8930189 DOI: 10.3389/fmicb.2022.841875] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/25/2022] [Indexed: 11/15/2022] Open
Abstract
Foodborne and enteric viruses continue to impose a significant public health and economic burden globally. As many of these viruses are highly transmissible, the ability to detect them portably, sensitively, and rapidly is critical to reduce their spread. Although still considered a gold standard for detection of these viruses, real time polymerase chain reaction (PCR)-based technologies have limitations such as limited portability, need for extensive sample processing/extraction, and long time to result. In particular, the limitations related to the susceptibility of real time PCR methods to potential inhibitory substances present in food and environmental samples is a continuing challenge, as the need for extensive nucleic acid purification prior to their use compromises the portability and rapidity of such methods. Isothermal amplification methods have been the subject of much investigation for these viruses, as these techniques have been found to be comparable to or better than established PCR-based methods in portability, sensitivity, specificity, rapidity, and simplicity of sample processing. The purpose of this review is to survey and compare reports of these isothermal amplification methods developed for foodborne and enteric viruses, with a special focus on the performance of these methods in the presence of complex matrices.
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Affiliation(s)
- Cassandra Suther
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA, United States
- Department of Medicine, University of Connecticut Health, Farmington, CT, United States
| | - Sloane Stoufer
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA, United States
| | - Yanjiao Zhou
- Department of Medicine, University of Connecticut Health, Farmington, CT, United States
| | - Matthew D. Moore
- Department of Food Science, University of Massachusetts Amherst, Amherst, MA, United States
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4
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Wei Z, Wang X, Feng H, Ji F, Bai D, Dong X, Huang W. Isothermal nucleic acid amplification technology for rapid detection of virus. Crit Rev Biotechnol 2022; 43:415-432. [PMID: 35156471 DOI: 10.1080/07388551.2022.2030295] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
While the research field and industrial market of in vitro diagnosis (IVD) thrived during and post the COVID-19 pandemic, the development of isothermal nucleic acid amplification test (INAAT) based rapid diagnosis was engendered in a global wised large measure as a problem-solving exercise. This review systematically analyzed the recent advances of INAAT strategies with practical case for the real-world scenario virus detection applications. With the qualities that make INAAT systems useful for making diagnosis relevant decisions, the key performance indicators and the cost-effectiveness of enzyme-assisted methods and enzyme-free methods were compared. The modularity of nucleic acid amplification reactions that can lead to thresholding signal amplifications using INAAT reagents and their methodology design were examined, alongside the potential application with rapid test platform/device integration. Given that clinical practitioners are, by and large, unaware of many the isothermal nucleic acid test advances. This review could bridge the arcane research field of different INAAT systems and signal output modalities with end-users in clinic when choosing suitable test kits and/or methods for rapid virus detection.
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Affiliation(s)
- Zhenting Wei
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Xi'an Key Laboratory of Special Medicine and Health Engineering, Northwestern Polytechnical University, Xi'an, China
- North Sichuan Medical College, Nanchong, China
| | - Xiaowen Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Xi'an Key Laboratory of Special Medicine and Health Engineering, Northwestern Polytechnical University, Xi'an, China
- North Sichuan Medical College, Nanchong, China
| | - Huhu Feng
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Xi'an Key Laboratory of Special Medicine and Health Engineering, Northwestern Polytechnical University, Xi'an, China
| | - Fanpu Ji
- Department of Infectious Diseases, The 2nd Hospital of Xi'an Jiaotong University, Nanchong, China
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The 2nd Hospital of Xi'an Jiaotong University, Nanchong, China
- Division of Gastroenterology and Hepatology, Stanford University Medical Center, Nanchong, China
| | - Dan Bai
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Xi'an Key Laboratory of Special Medicine and Health Engineering, Northwestern Polytechnical University, Xi'an, China
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Northwestern Polytechnical University, Nanchong, China
| | - Xiaoping Dong
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Nanchong, China
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Nanchong, China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Xi'an Key Laboratory of Special Medicine and Health Engineering, Northwestern Polytechnical University, Xi'an, China
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Northwestern Polytechnical University, Nanchong, China
- Institute of Advanced Materials (IAM), Nanjing Tech University, Nanchong, China
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5
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Daskou M, Dimitriou TG, Alexopoulou DS, Tsakogiannis D, Amoutzias GD, Mossialos D, Kyriakopoulou Z, Markoulatos P. WarmStart colorimetric RT-LAMP for the rapid, sensitive and specific detection of Enteroviruses A-D targeting the 5'UTR region. J Appl Microbiol 2020; 130:292-301. [PMID: 32639660 DOI: 10.1111/jam.14770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/17/2020] [Accepted: 07/02/2020] [Indexed: 12/18/2022]
Abstract
AIMS The aim of the present study was to develop a colorimetric LAMP assay for the detection of enteroviruses belonging to species A-D targeting the 5' untranslated region (5' UTR) of enteroviruses genome. METHODS AND RESULTS The RNA was converted to cDNA by the reverse transcriptase and then amplified via LAMP by the WarmStart®Bst DNA polymerase, simultaneously in a single reaction tube, so we shortened the reaction time to 50 min. The sensitivity of the assay regarding Enterovirus B, C and D was determined to be 0·30 CCID50 assay-1 while the sensitivity for Enterovirus A was 3·00 CCID50 assay-1 . The assay demonstrated high specificity and sensitivity for the detection of 45 reference strains of Enteroviruses A-D and validated on 20 clinical isolates. CONCLUSIONS This assay can be used as a diagnostic tool for the rapid, sensitive and specific detection of enteroviruses, easily implemented in small clinical and research laboratories since LAMP amplicons were visualized by colour changes eliminating the requirement for post-amplification processing steps. SIGNIFICANCE AND IMPACT OF THE STUDY We developed a colorimetric assay ideal for field situations for the detection of enteroviruses, by targeting the 5' UTR. This assay demonstrated high specificity and sensitivity, based on its performance on 45 EV A-D reference strains, on 20 EV B clinical isolates and on three non-enteroviral RNA viruses.
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Affiliation(s)
- M Daskou
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - T G Dimitriou
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - D S Alexopoulou
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - D Tsakogiannis
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - G D Amoutzias
- Department of Biochemistry & Biotechnology, Bioinformatics Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - D Mossialos
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
| | - Z Kyriakopoulou
- Department of Microbiology Laboratory, General Department of Larissa, University of Thessaly, Biopolis, Larissa, Greece
| | - P Markoulatos
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Biopolis, Larissa, Greece
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6
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Zhang Y, Wang Y, Xie Z, Wang R, Guo Z, He Y. Rapid Detection of Lily mottle virus and Arabis mosaic virus Infecting Lily ( Lilium spp.) Using Reverse Transcription Loop-Mediated Isothermal Amplification. THE PLANT PATHOLOGY JOURNAL 2020; 36:170-178. [PMID: 32296296 PMCID: PMC7143516 DOI: 10.5423/ppj.oa.04.2019.0096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 11/28/2019] [Accepted: 02/03/2020] [Indexed: 05/17/2023]
Abstract
The Lily mottle virus (LMoV) impedes the growth and quality of lily crops in Lanzhou, China. Recently Arabis mosaic virus (ArMV) has been detected in LMoV-infected plants in this region, causing plant stunting as well as severe foliar symptoms, and likely posing a threat to lily production. Consequently, there is a need to develop simple, sensitive, and reliable detection methods for these two viruses to prevent them from spreading. Reverse transcription (RT) loop-mediated isothermal amplification (LAMP) assays have been developed to detect LMoV and ArMV using two primer pairs that match six conserved sequences of LMoV and ArMV coat proteins, respectively. RT-LAMP assay results were visually assessed in reaction tubes using green fluorescence and gel electrophoresis. Our assays successfully detected both LMoV and ArMV in lily plants without the occurrence of viral cross-reactivity from other lily viruses. Optimal conditions for LAMP reactions were 65°C and 60°C for 60 min for LMoV and ArMV, respectively. Detection sensitivity for both RT-LAMP assays was a hundredfold greater than that of our comparative RT-polymerase chain reaction assays. We have also found this relatively rapid, target specific and sensitive method can also be used for samples collected in the field and may be especially useful in regions with limited or no laboratory facilities.
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Affiliation(s)
- Yubao Zhang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yajun Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhongkui Xie
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Corresponding author. Phone) +86-931-4967204, FAX) +86-931-8273894, E-mail) ,
| | - Ruoyu Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhihong Guo
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yuhui He
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
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7
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Development of a reverse transcription loop-mediated isothermal amplification assay (RT-LAMP) that detects enteroviruses by targeting the highly conserved 5′-UTR region. Virus Genes 2020; 56:194-201. [DOI: 10.1007/s11262-020-01732-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 01/09/2020] [Indexed: 12/15/2022]
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8
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Evaluation of a rapid detection for Coxsackievirus B3 using one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP). J Virol Methods 2017; 246:27-33. [PMID: 28435073 PMCID: PMC7113869 DOI: 10.1016/j.jviromet.2017.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 02/23/2017] [Accepted: 04/18/2017] [Indexed: 11/23/2022]
Abstract
Coxsackievirus B3 (CVB3) is a member of the genus Enterovirus within the family Picornaviridae and is an important pathogen of viral myocarditis, which accounts for more than 50% viral myocarditis cases. VP1 is major capsid protein that this region has a low homology in both amino acid and nucleotide sequences among Enteroviruses. Therefore we have chosen this region for designed a set of RT-LAMP primers for CVB3 detection. For this the total RNA was extracted from 24-h post infected-HeLa cells with complete cytopathic effect (CPE), and applied to a one-step reverse transcription loop-mediated isothermal amplification reaction (RT-LAMP) using CVB3-specific primers. The optimization of RT-LAMP reaction was carried out with three variables factors including MgSO4 concentration, temperature and time of incubation. Amplification was analyzed by using 2% agarose gel electrophoresis and ethidium bromide and SYBR Green staining. Our results were shown the ladder-like pattern of the VP1 gene amplification. The LAMP reaction mix was optimized and the best result observed at 4mM MgSO4 and 60°C for 90min incubation. RT-LAMP had high sensitivity and specificity for detection of CVB3 infection. This method can be used as a rapid and easy diagnostic test for detection of CVB3 in clinical laboratories.
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9
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Abstract
Since the beginning of Global Polio Eradication Initiative in 1988, poliomyelitis cases caused by wild poliovirus (PV) have been drastically reduced, with only 74 cases reported in 2 endemic countries in 2015. The current limited PV transmission suggests that we are in the endgame of the polio eradication program. However, specific challenges have emerged in the endgame, including tight budget, switching of the vaccines, and changes in biorisk management of PV. To overcome these challenges, several PV studies have been implemented in the eradication program. Some of the responses to the emerging challenges in the polio endgame might be valuable in other infectious diseases eradication programs. Here, I will review challenges that confront the polio eradication program and current research to address these challenges.
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Affiliation(s)
- Minetaro Arita
- Department of Virology II, National Institute of Infectious Diseases
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10
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Chen Q, Hu Z, Zhang Q, Yu M. Development and evaluation of a real-time method for testing human enteroviruses and coxsackievirus A16. Diagn Microbiol Infect Dis 2016; 85:36-41. [PMID: 26971632 DOI: 10.1016/j.diagmicrobio.2016.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/13/2016] [Accepted: 02/02/2016] [Indexed: 11/26/2022]
Abstract
Hand, foot, and mouth disease (HFMD) is a common infectious disease caused by a group of the human enteroviruses (HEV), including coxsackievirus A16 (CA16) and enterovirus 71 (EV71). In recent years, another HEV-A serotype, CA6 or CA10, has emerged to be one of the major etiologic agents that can induce HFMD worldwide. The objective of this study is to develop specific, sensitive, and rapid methods to help diagnose HEV and CA16 specifically by using simultaneous amplification testing (SAT) based on isothermal amplification of RNA and real-time detection of fluorescence technique, which were named as SAT-HEV and SAT-CA16, respectively (SAT-HEV/SAT-CA16). The specificity and sensitivity of SAT were tested here. SAT-HEV/SAT-CA16 could measure viral titers that were at least 10-fold lower than those measured by real-time PCR. Non-false cross-reactive amplification indicated that SAT-HEV/SAT-CA16 were highly specific with the addition of internal control (IC) RNA (5000 copies/reaction). A total of 198 clinical specimens were assayed by SAT comparing with real-time PCR. The statistically robust assessment of SAT-HEV and HEV-specific real-time PCR plus sequencing reached 99.0% (196/198), with a kappa value of 0.97, and 99.5% (197/198) and a kappa value of 0.99 for CA16, respectively. Additionally, IC prevented false-negative readings and assured the SAT-HEV/SAT-CA16 method's accuracy. Overall, SAT-HEV/SAT-CA16 method may serve as a platform for the simple and rapid detection of HEV/CA16 in time of HFMD outbreak.
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Affiliation(s)
- Qian Chen
- Institute of Pediatrics, Nanjing Children's Hospital affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Gulou Area, Nanjing, Jiangsu 210008, China.
| | - Zheng Hu
- Institute of Pediatrics, Nanjing Children's Hospital affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Gulou Area, Nanjing, Jiangsu 210008, China
| | - Qihua Zhang
- Institute of Pediatrics, Nanjing Children's Hospital affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Gulou Area, Nanjing, Jiangsu 210008, China
| | - Minghui Yu
- Shanghai Rendu Biotechnology Co., Ltd., No. 590 Ruiqing Road, East Area ZhangjiangHigh-Tech Park, Pudong Shanghai, 201201, China
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11
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Yan G, Jun L, Kangchen Z, Yiyue G, Yang Y, Xiaoyu Z, Zhiyang S, Lunbiao C. Rapid and visual detection of human enterovirus coxsackievirus A16 by reverse transcription loop-mediated isothermal amplification combined with lateral flow device. Lett Appl Microbiol 2015; 61:531-7. [PMID: 26399963 DOI: 10.1111/lam.12499] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/13/2015] [Accepted: 09/15/2015] [Indexed: 11/25/2022]
Abstract
UNLABELLED In this study, a reverse transcription loop-mediated isothermal amplification (RT-LAMP) combined with lateral flow device (LFD) technology to rapidly detect CVA16 was developed and evaluated. RT-LAMP assay was optimized to amplify VP1 gene of CVA16. Amplified products were analysed by LFD and capillary electrophoresis. The RT-LAMP-LFD assay showed 100% specificity in detecting CVA16, and showed analytical sensitivity of 0·55 TCID50 per reaction mixture. Comparison of the RT-LAMP-LFD assay with real-time RT-PCR developed previously in clinical specimens showed 93·3% agreement. The RT-LAMP-LFD assay is more sensitive in detecting CVA16 RNA. The RT-LAMP-LFD assay presented here might offer a rapid and simple alternative in clinical diagnosis of CVA16. SIGNIFICANCE AND IMPACT OF THE STUDY Coxsackievirus A16 (CVA16) is one of the major causative agents of hand, foot and mouth disease (HFMD). Rapid and reliable detection and typing of it can limit the spread. We developed a reverse transcription loop-mediated isothermal amplification (RT-LAMP) combined with lateral flow device (LFD) technology to rapidly detect CVA16. The high sensitivity and specificity and its ease of use make this assay ideal for use in resource-limited settings such as primary care facilities and clinical laboratories in developing countries.
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Affiliation(s)
- G Yan
- Department of Neonatology, Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - L Jun
- Department of Emergency, Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - Z Kangchen
- Key Laboratories of Enteric Pathogenic Microbiology (Ministry of Health), Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
| | - G Yiyue
- Key Laboratories of Enteric Pathogenic Microbiology (Ministry of Health), Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
| | - Y Yang
- Department of Neonatology, Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - Z Xiaoyu
- Department of Neonatology, Nanjing Children's Hospital, Nanjing Medical University, Nanjing, China
| | - S Zhiyang
- Key Laboratories of Enteric Pathogenic Microbiology (Ministry of Health), Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
| | - C Lunbiao
- Key Laboratories of Enteric Pathogenic Microbiology (Ministry of Health), Institute of Pathogenic Microbiology, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, China
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12
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Development of an efficient entire-capsid-coding-region amplification method for direct detection of poliovirus from stool extracts. J Clin Microbiol 2014; 53:73-8. [PMID: 25339406 DOI: 10.1128/jcm.02384-14] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Laboratory diagnosis has played a critical role in the Global Polio Eradication Initiative since 1988, by isolating and identifying poliovirus (PV) from stool specimens by using cell culture as a highly sensitive system to detect PV. In the present study, we aimed to develop a molecular method to detect PV directly from stool extracts, with a high efficiency comparable to that of cell culture. We developed a method to efficiently amplify the entire capsid coding region of human enteroviruses (EVs) including PV. cDNAs of the entire capsid coding region (3.9 kb) were obtained from as few as 50 copies of PV genomes. PV was detected from the cDNAs with an improved PV-specific real-time reverse transcription-PCR system and nucleotide sequence analysis of the VP1 coding region. For assay validation, we analyzed 84 stool extracts that were positive for PV in cell culture and detected PV genomes from 100% of the extracts (84/84 samples) with this method in combination with a PV-specific extraction method. PV could be detected in 2/4 stool extract samples that were negative for PV in cell culture. In PV-positive samples, EV species C viruses were also detected with high frequency (27% [23/86 samples]). This method would be useful for direct detection of PV from stool extracts without using cell culture.
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13
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Chen Q, Hu Z, Zhang Q, Yu M. Development and evaluation of a real-time method of simultaneous amplification and testing of enterovirus 71 incorporating a RNA internal control system. J Virol Methods 2013; 196:139-44. [PMID: 24269796 DOI: 10.1016/j.jviromet.2013.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 11/11/2013] [Accepted: 11/12/2013] [Indexed: 10/26/2022]
Abstract
Human enterovirus 71 (EV71) is a primary etiological agent of hand, foot, and mouth disease (HFMD). The associated infections have posed a serious threat to the public health. In the present study, a real-time simultaneous amplification and testing (SAT) technology was developed for detecting EV71 (SAT-EV71). The RNA of EV71 and an internal control (IC) were amplified and analyzed simultaneously by isothermal amplification and real-time detection of fluorescence using routine real-time PCR. Furthermore, this SAT-EV71 method with IC was evaluated by analyzing 256 clinical specimens including 60 enterovirus-positive ones confirmed by the virus-cell culture method. The other 196 putative ones were further analyzed by a PCR-fluorescence probing assay. The results showed that SAT-EV71 can detect the EV71 VP1 with a minimum of 10 copies per reaction at an optimal concentration of IC (5000 copies per reaction) with a high sensitivity and specificity. Meanwhile, the use of IC can prevent false negatives effectively by monitoring the processes of nucleic acid extraction and amplification. Overall, this easy-to-perform SAT-EV71 with IC can detect EV71 sensitively and specifically. It might be used in the molecular diagnosis of EV71 in putative cases of HFMD.
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Affiliation(s)
- Qian Chen
- Pediatrics Research Institute, Nanjing Children's Hospital Affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Nanjing 210008, China.
| | - Zheng Hu
- Pediatrics Research Institute, Nanjing Children's Hospital Affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Nanjing 210008, China
| | - Qihua Zhang
- Pediatrics Research Institute, Nanjing Children's Hospital Affiliated to Nanjing Medical University, No. 72 Guangzhou Road, Nanjing 210008, China
| | - Minghui Yu
- Shanghai Rendu Biotechnology Co., Ltd., No. 590 Ruiqing Road, East Area Zhangjiang High-Tech Park, Shanghai 201201, China
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14
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Wang Z, Gu Q, Sun H, Li H, Sun B, Liang X, Yuan Y, Liu R, Shi Y. One-step reverse transcription loop mediated isothermal amplification assay for sensitive and rapid detection of Cucurbit chlorotic yellows virus. J Virol Methods 2013; 195:63-6. [PMID: 24056260 DOI: 10.1016/j.jviromet.2013.08.037] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 08/26/2013] [Accepted: 08/29/2013] [Indexed: 11/28/2022]
Abstract
A reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed for the detection of Cucurbit chlorotic yellows virus (CCYV). In this procedure, a set of four primers matching a total of six sequences in the coat protein gene region of CCYV was synthesized for the RT-LAMP assay using total RNA extracted from CCYV-infected melon leaf tissues, and the optimum reaction temperature and assay time were determined. The sensitivity assay showed that the virus was detectable in RT-LAMP reactions at dilutions of 1×10(-11), which was 10(5) times more sensitive than the RT-PCR assay. The RT-LAMP assay for CCYV and Sweet potato chlorotic stunt virus (SPCSV) exhibited high specificity for CCYV. This simple and sensitive method has potential for detection of CCYV in samples collected in the field.
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Affiliation(s)
- Zhenyue Wang
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
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15
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Zhao HB, Yin GY, Zhao GP, Huang AH, Wang JH, Yang SF, Gao HS, Kang WJ. Development of Loop-Mediated Isothermal Amplification (LAMP) for Universal Detection of Enteroviruses. Indian J Microbiol 2013; 54:80-6. [PMID: 24426171 DOI: 10.1007/s12088-013-0399-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 03/26/2013] [Indexed: 12/18/2022] Open
Abstract
Enteroviruses are found in most environments and cause several diseases in humans. Loop-mediated isothermal amplification (LAMP) was adapted and evaluated for the rapid detection of enteroviruses. Based on the highly conserved 5' untranslated region (5'-UTR) of the human enteroviruses (HEVs), particularly human enterovirus A (HEV-A) and HEV-B, a set of universal primers was designed. The LAMP amplification was carried out under isothermal conditions at 61 °C, depending on the template concentration results were obtained within 45-90 min. The detection limits were found to be 10(1) copies of cloned enterovirus 71 fragments, more sensitive than conventional PCR. Nine water samples collected from drinking water sources during three seasons and 19 stool specimens collected from HFMD patients were analyzed. By using the LAMP assay, the majority of samples was tested positive, 9/9 (100 %) and 18/19 (94.7 %), respectively. LAMP is a practical method for the rapid detection of enteroviruses in environmental and clinical samples.
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Affiliation(s)
- Hua-Bing Zhao
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Guang-Ya Yin
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Guo-Ping Zhao
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Ai-Hua Huang
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Jun-Hong Wang
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Shuang-Feng Yang
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Hong-Sheng Gao
- Tianjin Key Laboratory for Biomarkers of Occupational and Environmental Hazard, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300162 China
| | - Wei-Jun Kang
- School of Public Health, Hebei Medical University, Shijiazhuang, 050031 China
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Hanaki KI, Ike F, Hatakeyama R, Hirano N. Reverse transcription-loop-mediated isothermal amplification for the detection of rodent coronaviruses. J Virol Methods 2013; 187:222-7. [PMID: 23123121 PMCID: PMC7112798 DOI: 10.1016/j.jviromet.2012.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/11/2012] [Accepted: 10/22/2012] [Indexed: 11/20/2022]
Abstract
Mouse hepatitis virus (MHV) is one of the most prevalent viruses detected in laboratory mouse colonies. Enterotropic strains predominate in natural infections, and molecular techniques for the detection of MHV shedding in feces are powerful enough to diagnose active infections. A reverse transcription-loop-mediated isothermal amplification (RT-LAMP) technique was developed for the detection of rodent coronaviruses within 90 min. The specificity of this technique was confirmed by its ability to detect all 17 different strains of MHV and 6 strains of rat coronaviruses as well as its failure to detect human, bovine, and porcine coronaviruses nonspecifically. The sensitivity of RT-LAMP was 3.2-fold higher than that of reverse transcription-polymerase chain reaction (RT-PCR) and 31.6-fold lower than that of nested RT-PCR. An evaluation of the diagnostic performance of RT-LAMP performed in duplicate using mouse fecal specimens showed that the sensitivity and specificity with respect to nested RT-PCR were 85.7% and 100%, respectively. RT-LAMP assays would be suitable for monitoring active MHV infection in mouse colonies.
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Affiliation(s)
- Ken-Ichi Hanaki
- Department of Laboratory Animal Medicine, Institute for Biomedical Sciences, Iwate Medical University, 2-1-1 Nishi-Tokuda, Yahaba, Iwate 028-3694, Japan.
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Yang JL, Zhang SH, Liu ZH, Yang R, Huang Y, Wen M. Development and evaluation of a loop-mediated isothermal amplification assay for the rapid detection of porcine cytomegalovirus under field conditions. Virol J 2012; 9:321. [PMID: 23272902 PMCID: PMC3552788 DOI: 10.1186/1743-422x-9-321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Accepted: 12/21/2012] [Indexed: 11/15/2022] Open
Abstract
Background Porcine cytomegalovirus (PCMV) induces silent infection in adult pigs but more frequently causes fatal, generalized infection in newborn piglets. This study aimed to develop a new loop-mediated isothermal amplification (LAMP) method for the sensitive, rapid, and inexpensive detection of PCMV under field conditions. Methods Tissue obtained from nine-week-old PCMV-free Landrace pigs or pig samples from postmortem examinations were analyzed. The samples were found to have clinical signs and lesions consistent with inclusion body rhinitis. Six specific primers were designed by targeting the PCMV DNA polymerase (DPOL) DNA. The LAMP reaction was optimized in a water bath. The sensitivity and specificity of LAMP and polymerase chain reaction (PCR) were compared. Results PCMV DNA was amplified at 65°C, and the result could be detected as early as 30 min into the reaction. Positive reactions could be visualized by the naked eye as a color change brought on by the addition of SYBR Green. The sensitivity and specificity of LAMP were found to be similar to those of the PCR. Conclusions LAMP is a high-throughput technique for the detection of PCMV and has a high specificity, sensitivity and simplicity; these factors make it suitable for detection of PCMV under field conditions.
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Affiliation(s)
- Jin-Long Yang
- Animal Science College of Guizhou University, Guiyang, Guizhou, China.
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Yaqing H, Wenping Z, Zhiyi Y, Xionghu W, Shouyi Y, Hong Y, Yingchun D, Guifang H. Detection of human Enterovirus 71 reverse transcription loop-mediated isothermal amplification (RT-LAMP). Lett Appl Microbiol 2012; 54:233-9. [PMID: 22256968 DOI: 10.1111/j.1472-765x.2011.03198.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS In this study, a one-step, single-tube reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed and validated for the detection of human Enterovirus 71 (EV71), the major aetiological agent of hand, foot and mouth disease (HFMD). METHODS AND RESULTS Reverse transcription loop-mediated isothermal amplification assay was optimized to amplify VP1 gene in the presence of a specific primer set and Bst DNA polymerase at an isothermal temperature of 63°C for 1 h. Amplified products were evaluated by visual inspection and agarose gel electrophoresis. The detection limit of RT-LAMP assay was 10(-5) 100 TCID50 or 160 copies in samples after RNA extraction, which was 10-fold higher in sensitivity than traditional reverse transcription polymerase chain reaction (RT-PCR). The specific positive amplification was only observed in EV71 strains, while no amplification was detected in other tested viruses. Digestion with a specific Escherichia coli restriction enzymes V (EcoR V) demonstrated that the amplified product was unique. A good correlation between RT-LAMP and real-time RT-PCR was observed on the basis of the analysis of 33 clinical samples. CONCLUSIONS Reverse transcription loop-mediated isothermal amplification is a novel, alternative microbiological approach for rapid, sensitive and specific detection of EV71 in HFMD. SIGNIFICANCE AND IMPACT OF THE STUDY Reverse transcription loop-mediated isothermal amplification assay is suitable for the diagnosis of EV71 infection as a routine diagnostic tool for HFMD because of fewer requirements of experimental conditions such as private clinics, field applications as well as an epidemiological survey in epidemic areas. RT-LAMP can also be used as an alternative method for EV71 detection.
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Affiliation(s)
- H Yaqing
- Department of Epidemiology, Southern Medical University, Guangzhou, China
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Zhang ZY, Liu XJ, Li DW, Yu JL, Han CG. Rapid detection of wheat yellow mosaic virus by reverse transcription loop-mediated isothermal amplification. Virol J 2011; 8:550. [PMID: 22185375 PMCID: PMC3260119 DOI: 10.1186/1743-422x-8-550] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 12/20/2011] [Indexed: 11/10/2022] Open
Abstract
For the detection of wheat yellow mosaic virus (WYMV), we established a reverse transcription loop-mediated isothermal amplification (RT-LAMP) method. Using Primer Explorer software, four sets of primers were designed and RT-LAMP assay reaction conditions were optimized. The RT-LAMP was performed at different times by four primer sets. Agarose gel analysis showed that WYMV could be detected after 30 min with the primer set III and after 45 min with the other three primer sets, both under the 80-min reaction time. RT-LAMP had the same results with the four primer sets, thus primer set III and 65°C for 80 min reaction were selected for virus detection. There was no significant different when avian myeloblastosis virus (AMV) and moloney murine leukemia virus (M-MLV) RT-LAMP with the four primer sets and M-MLV was chosen due to its relatively cheap price. The result on specificity showed that the assay could amplify WYMV specifically, and the sensitivity comparison showed that the RT-LAMP was 100 times more sensitive than conventional reverse-transcriptase-polymerase chain reaction (RT-PCR). Overall, RT-LAMP was found to be a simple, specific, sensitive, convenient and time-saving method for WYMV detection.
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Affiliation(s)
- Zong-Ying Zhang
- State Key Laboratory for Agrobiotechnology and Department of Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Xiao-Jun Liu
- State Key Laboratory for Agrobiotechnology and Department of Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Da-Wei Li
- State Key Laboratory for Agrobiotechnology and Department of Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Jia-Lin Yu
- State Key Laboratory for Agrobiotechnology and Department of Plant Pathology, China Agricultural University, Beijing 100193, China
| | - Cheng-Gui Han
- State Key Laboratory for Agrobiotechnology and Department of Plant Pathology, China Agricultural University, Beijing 100193, China
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Development and evaluation of a reverse transcription-loop-mediated isothermal amplification assay for rapid detection of enterovirus 71. J Clin Microbiol 2010; 49:870-4. [PMID: 21177907 DOI: 10.1128/jcm.02045-10] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Human enterovirus 71 (EV71) is the major etiological agent of hand, foot, and mouth disease (HFMD), which is a common infectious disease in young children and infants. EV71 can cause various clinical manifestations and has been associated with severe neurological complications; it has resulted in fatalities during recent outbreaks in Asian-Pacific regions since 1997. The early and rapid detection is critical for prevention and control of EV71 infection, since no vaccine or antiviral drugs are currently available. In this study, a simple and sensitive reverse transcription-loop-mediated isothermal amplification (RT-LAMP) assay was developed for rapid detection of EV71. The detection limit of the RT-LAMP assay was approximately 0.01 PFU per reaction mixture, and no cross-reactive amplification with other enteroviruses was observed. The assay was evaluated further with 40 clinical specimens and exhibited 92.9% sensitivity and 100% specificity. This RT-LAMP assay may become a useful alternative in clinical diagnosis of EV71, especially in resource-limited hospitals or rural clinics of China and other countries in the Asian-Pacific region.
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Zhao K, Liu Y, Wang X. Reverse transcription loop-mediated isothermal amplification of DNA for detection of Barley yellow dwarf viruses in China. J Virol Methods 2010; 169:211-4. [PMID: 20637237 DOI: 10.1016/j.jviromet.2010.06.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 06/25/2010] [Accepted: 06/29/2010] [Indexed: 12/01/2022]
Abstract
A reverse transcription loop-mediated isothermal amplification of DNA (RT-LAMP) for detection of Barley yellow dwarf viruses (BYDVs) was developed. In this procedure, three sets of four primers matching a total of six sequences of the coat protein or read-through protein genes of BYDVs - one each for three species, namely BYDV-GAV, -GPV and -PAV were synthesized for developing a specific and sensitive RT-LAMP assay for total RNA extracts from field-infected wheat plants in such a way that a loop could be formed and elongated during DNA amplification. RT-LAMP assays for each of three species of BYDV/CYDVs in China exhibited high specificity and could detect viral sequences in total RNA extracts from infected oat tissues at dilutions of 1 x 10(-5). All field samples collected from different regions of China showed the same result using both RT-LAMP and RT-PCR. This relatively simple and sensitive technique showed excellent potential with field-collected samples and for use in grassroots agencies in developing countries with limited resources.
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Affiliation(s)
- Kun Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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