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Sanmoung W, Sawangjaroen N, Jitueakul S, Buncherd H, Tun AW, Thanapongpichat S, Imwong M. Application of loop-mediated isothermal amplification combined with lateral flow assay visualization of Plasmodium falciparum kelch 13 C580Y mutation for artemisinin resistance detection in clinical samples. Acta Trop 2023; 246:106998. [PMID: 37544396 PMCID: PMC10465885 DOI: 10.1016/j.actatropica.2023.106998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/28/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Resistance to the antimalarial drug artemisinin (ART) has emerged in Greater Mekong Subregion. The molecular marker predominantly used to identify ART resistance is the C580Y mutation in Pfkelch13 of Plasmodium falciparum. Rapid and accurate detection of ART resistance in the field is necessary to guide malaria containment and elimination interventions. Our study evaluates the PfC580Y by using the loop-mediated isothermal amplification and single nucleotide polymorphism analysis visualization using a lateral flow assay (LAMP-SNP-LFA) method for detecting ART resistance in clinical samples collected from Thailand between 2014 and 2019. The optimized incubation condition for the reaction was determined as 45 min at 56 °C, followed by visual detection of positive amplicons using LFA. The assay demonstrated high analytical sensitivity and specificity, with a limit of detection of 16.8 copies of C580Y plasmid/µL of and 100% accuracy for C580Y mutation detection. The PfC580Y LAMP-SNP-LFA method is faster and simpler than conventional polymerase chain reaction/DNA sequencing and has the potential to support antimalarial management policies, malaria control, and global elimination efforts.
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Affiliation(s)
- Wannida Sanmoung
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Nongyao Sawangjaroen
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Suwannee Jitueakul
- Haematology Unit, Department of Medical Technology and Pathology, Suratthani Hospital, Surat Thani Province, Thailand
| | - Hansuk Buncherd
- Faculty of Medical Technology, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Aung Win Tun
- Faculty of Graduate Studies, Mahidol University, Salaya, Nakhon Pathom 73170, Thailand
| | - Supinya Thanapongpichat
- Faculty of Medical Technology, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Mallika Imwong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, 10400, Thailand; Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
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Blin M, Dametto S, Agniwo P, Webster BL, Angora E, Dabo A, Boissier J. A duplex tetra-primer ARMS-PCR assay to discriminate three species of the Schistosoma haematobium group: Schistosoma curassoni, S. bovis, S. haematobium and their hybrids. Parasit Vectors 2023; 16:121. [PMID: 37029440 PMCID: PMC10082484 DOI: 10.1186/s13071-023-05754-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/22/2023] [Indexed: 04/09/2023] Open
Abstract
BACKGROUND The use of applications involving single nucleotide polymorphisms (SNPs) has greatly increased since the beginning of the 2000s, with the number of associated techniques expanding rapidly in the field of molecular research. Tetra-primer amplification refractory mutation system-PCR (T-ARMS-PCR) is one such technique involving SNP genotyping. It has the advantage of amplifying multiple alleles in a single reaction with the inclusion of an internal molecular control. We report here the development of a rapid, reliable and cost-effective duplex T-ARMS-PCR assay to distinguish between three Schistosoma species, namely Schistosoma haematobium (human parasite), Schistosoma bovis and Schistosoma curassoni (animal parasites), and their hybrids. This technique will facilitate studies of population genetics and the evolution of introgression events. METHODS During the development of the technique we focused on one of the five inter-species internal transcribed spacer (ITS) SNPs and one of the inter-species 18S SNPs which, when combined, discriminate between all three Schistosoma species and their hybrid forms. We designed T-ARMS-PCR primers to amplify amplicons of specific lengths for each species, which in turn can then be visualized on an electrophoresis gel. This was further tested using laboratory and field-collected adult worms and field-collected larval stages (miracidia) from Spain, Egypt, Mali, Senegal and Ivory Coast. The combined duplex T-ARMS-PCR and ITS + 18S primer set was then used to differentiate the three species in a single reaction. RESULTS The T-ARMS-PCR assay was able to detect DNA from both species being analysed at the maximum and minimum levels in the DNA ratios (95/5) tested. The duplex T-ARMS-PCR assay was also able to detect all hybrids tested and was validated by sequencing the ITS and the 18S amplicons of 148 of the field samples included in the study. CONCLUSIONS The duplex tetra-primer ARMS-PCR assay described here can be applied to differentiate between Schistosoma species and their hybrid forms that infect humans and animals, thereby providing a method to investigate the epidemiology of these species in endemic areas. The addition of several markers in a single reaction saves considerable time and is of long-standing interest for investigating genetic populations.
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Affiliation(s)
- Manon Blin
- Hosts Pathogens Environment Interactions, UMR 5244, CNRS, IFREMER, UM, University of Perpignan Via Domitia, Perpignan, 66860, France
- SAS ParaDev®, 66860, Perpignan, France
| | - Sarah Dametto
- Hosts Pathogens Environment Interactions, UMR 5244, CNRS, IFREMER, UM, University of Perpignan Via Domitia, Perpignan, 66860, France
| | - Privat Agniwo
- Hosts Pathogens Environment Interactions, UMR 5244, CNRS, IFREMER, UM, University of Perpignan Via Domitia, Perpignan, 66860, France
- Department of Epidemiology of Infectious Diseases, Faculty of Pharmacy, IRL 3189, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Bonnie L Webster
- Wolfson Wellcome Biomedical Laboratories, Department of Science, Natural History Museum, London, SW7 5BD, UK
- London Centre for Neglected Tropical Disease Research, Imperial College London School of Public Health, London, W2 1PG, UK
| | - Etienne Angora
- Swiss Tropical and Public Health Institute, P.O. Box, 4002, Basel, Switzerland
- University of Basel, Kreuzstrasse 2, 4123, Allschwil, Switzerland
- Unité de Formation et de Recherche Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, BPV 34, Abidjan, Côte d'Ivoire
| | - Abdoulaye Dabo
- Department of Epidemiology of Infectious Diseases, Faculty of Pharmacy, IRL 3189, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Jérôme Boissier
- Hosts Pathogens Environment Interactions, UMR 5244, CNRS, IFREMER, UM, University of Perpignan Via Domitia, Perpignan, 66860, France.
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Xiao B, Zhao R, Wang N, Zhang J, Sun X, Chen A. Recent advances in centrifugal microfluidic chip-based loop-mediated isothermal amplification. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Lin P, Wang J, Song S, Cheng Y, Yi L, Cheng S, Wang Z. Development of an Immunochromatographic Strip for Rapid Detection of Mink Enteritis Virus. Front Microbiol 2022; 13:839320. [PMID: 35356522 PMCID: PMC8959666 DOI: 10.3389/fmicb.2022.839320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 02/17/2022] [Indexed: 11/13/2022] Open
Abstract
Although mink enteritis virus (MEV) is an acute, virulent, and highly contagious pathogen in minks, there is currently a lack of a quick diagnostic method. By conjugating colloidal gold nanoparticles with the MEV-specific monoclonal antibody, monoclonal antibody (MAb) 14, we developed a single-step competitive immunochromatographic strip (ICS) assay for simple determination of MEV. The optimal concentrations of the colloidal gold-coupled MAb 14 (coating antibody), the capture protein (MEV VP2 protein), and the goat anti-mouse antibody were 1.0, 0.8, and 1.0 mg/ml, respectively. The limit of detection was approximately 512 hemagglutination units/100 μl of MEV B strain. Other common viruses of mink were tested to evaluate the specificity of the ICS, and the results showed no cross-reactivity for other pathogens. In comparison with the Anigen Rapid canine parvovirus (CPV) Ag Test Kit (BioNote, Korea) in testing 289 samples, the percentage of agreement and relative sensitivity and specificity of the MEV ICS assay were 94.1, 93.2, and 97.1%, respectively. The ICS test was found to be a sufficiently sensitive and specific detection method for the convenient and rapid detection of MEV.
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Affiliation(s)
- Peng Lin
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Jianke Wang
- Hebei Veterinary Biotechnology Innovation Center, College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Shanshan Song
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yuening Cheng
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Li Yi
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Shipeng Cheng
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Zhenjun Wang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China.,College of Veterinary Medicine, Jilin University, Changchun, China
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5
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Zhou M, Su H, Wang B, Wan C, Du W, Chen P, Feng X, Liu BF. A magnet-actuated microfluidic array chip for high-throughput pretreatment and amplification and detection of multiple pathogens. Analyst 2022; 147:2433-2441. [DOI: 10.1039/d2an00430e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The outbreak of global infectious diseases has posed a significant threat to public health, requiring the rapid and accurate diagnosis of pathogens promptly for society to implement immediate control measures to prevent widespread pandemics.
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Affiliation(s)
- Mengfan Zhou
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huiying Su
- School of Biological Engineering, Huainan Normal University, Huainan, Anhui 232038, China
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Bangfeng Wang
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chao Wan
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wei Du
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Peng Chen
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaojun Feng
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Bi-Feng Liu
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics – Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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6
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Higgins O, Smith TJ. Loop-Primer Endonuclease Cleavage-Loop-Mediated Isothermal Amplification Technology for Multiplex Pathogen Detection and Single-Nucleotide Polymorphism Identification. J Mol Diagn 2021; 22:640-651. [PMID: 32409120 DOI: 10.1016/j.jmoldx.2020.02.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/15/2019] [Accepted: 02/03/2020] [Indexed: 12/27/2022] Open
Abstract
Loop-mediated isothermal amplification (LAMP) provides effective diagnostic technology for infectious disease pathogen identification and is compatible with inexpensive instrumentation for use in disease-prevalent developing regions. However, simultaneous multiple-target detection and single-nucleotide polymorphism (SNP) identification, essential properties of nucleic acid diagnostics, are difficult to achieve using LAMP. This study introduces loop-primer endonuclease cleavage (LEC)-LAMP, a singleplex or multiplex LAMP technology with single-base specificity for variable SNP identification. We developed a singleplex LEC-LAMP Neisseria meningitidis assay that demonstrated complete analytical specificity and a limit of detection of 3.1 genome copies per reaction. Small-scale clinical testing of this assay demonstrated 100% diagnostic specificity and sensitivity when assessed with anonymized DNA extracts from confirmed cases of bacterial meningitis infection. The single-base specificity of this assay indicated effective SNP identification properties when challenged with DNA templates containing SNPs located within a specific six-base region. This assay was modified to generate an allele-specific LEC-LAMP N. meningitidis assay that successfully demonstrated single-tube differentiation of wild-type and mutant allele templates. The singleplex assay was further modified to generate a multiplex LEC-LAMP assay that successfully demonstrated simultaneous multiple-target detection of three bacterial targets, N. meningitidis, Streptococcus pneumonia, and Hemophilus influenzae. LEC-LAMP is the first report of single-tube, real-time, singleplex or multiplex LAMP technology with single-base specificity for variable SNP identification.
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Affiliation(s)
- Owen Higgins
- Molecular Diagnostics Research Group, School of Natural Sciences, National University of Ireland, Galway, Ireland.
| | - Terry J Smith
- Molecular Diagnostics Research Group, School of Natural Sciences, National University of Ireland, Galway, Ireland
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7
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Lalonde LF, Xie V, Oakley JR, Lobanov VA. Optimization and validation of a loop-mediated isothermal amplification (LAMP) assay for detection of Giardia duodenalis in leafy greens. Food Waterborne Parasitol 2021; 23:e00123. [PMID: 34169158 PMCID: PMC8209402 DOI: 10.1016/j.fawpar.2021.e00123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 11/26/2022] Open
Abstract
Giardia duodenalis is one of the most common food and water-borne intestinal parasites of humans and animals worldwide. Fresh, ready-to-eat produce such as leafy greens and salad mixes are considered potential transmission vehicles for Giardia infection in humans. Therefore, a specific, sensitive, and reliable method for Giardia detection in leafy greens is needed. We optimized washing procedures for the recovery of Giardia cysts from leafy greens and adapted and validated an existing EF1α LAMP assay for the detection of Giardia DNA to support routine diagnostic surveillance and disease outbreak investigations. Four leafy green types (35 ± 1 g) were spiked with 100 Giardia cysts and we compared washing by shaking with 1 M glycine (n = 20) or 0.1% Alconox (n = 20). DNA was extracted from washes, tested by LAMP and melt curve analysis, and time to positive (TTP) values compared. The detection limit was determined by spiking 10 (n = 40) Giardia cysts onto these same types of leafy greens and processing as above with 0.1% Alconox. Method robustness was assessed by subjecting spring mix (n = 45 total) to aging (1, 3 or 7 days) and washes to aging and freezing conditions prior to testing. Assay repeatability and specificity were evaluated, and an artificial positive control (APC) distinguishable by melt temperature (Tm) from DNA of Giardia spiked on leafy greens was designed to rule out cross-contamination from the control. Giardia detection rates were higher and TTP was lower (P < 0.05) for 0.1% Alconox (19/20, 8.85 ± 0.3 min) compared with 1 M glycine (15/20, 14.53 ± 7.2 min). The LAMP assay detected 10 Giardia cysts spiked on leafy greens in 13–34 min in 14/40 samples tested. Robustness assessment showed that TTP was higher (P < 0.0001) when spiked produce was stored for 7 days (13.09 ± 1.14 min) compared to fresh (9.72 ± 0.43 min). No unspiked samples were positive by LAMP, and the Tm for DNA of Giardia spiked on leafy greens was higher (P < 0.0001, 87.43 ± 0.05 °C) than the APC (86.43 ± 0.12 °C). Within-assay repeatability co-efficient of variation (CV) for TTP was 5.4% and no cross-contamination occurred when spiked and un-spiked samples were processed in alternate order. The optimized sample processing procedure combined with the EF1α LAMP assay is a sensitive, specific, labour-saving, and rapid method for the detection of Giardia cysts in leafy greens. We adapted and validated EF1α LAMP assay for detection of Giardia in leafy greens. Giardia LAMP is sensitive, specific and has a faster turnaround time than nPCR. The assay performs well on aged and deteriorated produce samples. Giardia LAMP has been implemented in our lab for routine surveillance testing.
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Affiliation(s)
- Laura F Lalonde
- Centre for Food-borne and Animal Parasitology, Canadian Food Inspection Agency, Saskatoon Laboratory, 116 Veterinary Road, Saskatoon, Saskatchewan S7N 2R3, Canada
| | - Vincent Xie
- Centre for Food-borne and Animal Parasitology, Canadian Food Inspection Agency, Saskatoon Laboratory, 116 Veterinary Road, Saskatoon, Saskatchewan S7N 2R3, Canada
| | - Jenna R Oakley
- Centre for Food-borne and Animal Parasitology, Canadian Food Inspection Agency, Saskatoon Laboratory, 116 Veterinary Road, Saskatoon, Saskatchewan S7N 2R3, Canada
| | - Vladislav A Lobanov
- Centre for Food-borne and Animal Parasitology, Canadian Food Inspection Agency, Saskatoon Laboratory, 116 Veterinary Road, Saskatoon, Saskatchewan S7N 2R3, Canada
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Varona M, Anderson JL. Advances in Mutation Detection Using Loop-Mediated Isothermal Amplification. ACS OMEGA 2021; 6:3463-3469. [PMID: 33585732 PMCID: PMC7876693 DOI: 10.1021/acsomega.0c06093] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 01/21/2021] [Indexed: 05/25/2023]
Abstract
Detection of mutations and single-nucleotide polymorphisms is highly important for diagnostic applications. Loop-mediated isothermal amplification (LAMP) is a powerful technique for the rapid and sensitive detection of nucleic acids. However, LAMP traditionally does not possess the ability to resolve single-nucleotide differences within the target sequence. Because of its speed and isothermal nature, LAMP is ideally suited for point-of-care applications in resource-limited settings. Recently, different approaches have been developed and applied to enable single-nucleotide differentiation within target sequences. This Mini-Review highlights advancements in mutation detection using LAMP. Methods involving primer design and modification to enable sequence differentiation are discussed. In addition, the development of probe-based detection methods for mutation detection are also covered.
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9
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Wang Y, Hu B, Lu R, Ma F, Lv S, Zhang H, Bai X, Zhang L, Shi N, Li X, Fan S, Lian S, Yan X, Zhu Y. Pathogenicity comparison of the SMPV-11 and attenuated mink enteritis virus F61 in mink. Virus Res 2021; 294:198294. [PMID: 33422556 DOI: 10.1016/j.virusres.2021.198294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 12/26/2020] [Accepted: 01/03/2021] [Indexed: 10/22/2022]
Abstract
Mink enteritis virus (MEV) is a major pathogen inducing acute hemorrhagic enteritis in mink. This study aims to determine the pathogenicity of the isolated MEV strain (SMPV-11) compared with the attenuated MEV strain (MEV-F61) in the mink. The two MEV strains were inoculated in the two mink groups, respectively. Then the clinical symptom, hematological, serological, and histopathological change were evaluated. Our findings showed that there were differences in the clinical features and pathological changes of the SMPV-11 and MEV-F61 in the mink. It indicates that SMPV-11 is a virulent strain, and it can be the potential MEV vaccine strain in the mink.
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Affiliation(s)
- Yang Wang
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Bo Hu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Rongguang Lu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Fanshu Ma
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Shuang Lv
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Hailing Zhang
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Xue Bai
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Lei Zhang
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Ning Shi
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Xintong Li
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; State Key Laboratory of Membrane Biology, Institute of Zoology, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100101, China
| | - Sining Fan
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; Shenyang Huibai Biotechnology Co., Ltd, Shenyang 110003 China
| | - Shizhen Lian
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
| | - Xijun Yan
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China; Sinovet Biopharm. Co., Ltd., Taizhou 100085, China.
| | - Yanzhu Zhu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
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Photichai K, Guntawang T, Sittisak T, Kochagul V, Chuammitri P, Thitaram C, Thananchai H, Chewonarin T, Sringarm K, Pringproa K. Attempt to Isolate Elephant Endotheliotropic Herpesvirus (EEHV) Using a Continuous Cell Culture System. Animals (Basel) 2020; 10:E2328. [PMID: 33297581 PMCID: PMC7762348 DOI: 10.3390/ani10122328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/28/2020] [Accepted: 12/04/2020] [Indexed: 11/17/2022] Open
Abstract
Elephant endotheliotropic herpesvirus (EEHV) infection is known to cause acute fatal hemorrhagic disease, which has killed many young Asian elephants (Elephas maximus). Until recently, in vitro isolation and propagation of the virus have not been successful. This study aimed to isolate and propagate EEHV using continuous cell lines derived from human and/or animal origins. Human cell lines, including EA. hy926, A549, U937, RKO, SW620, HCT-116 and HT-29, and animal cell lines, including CT26.CL25 and sp2/0-Ag14, were investigated in this study. Mixed frozen tissue samples of the heart, lung, liver, spleen and kidney obtained from fatal EEHV1A- or EEHV4-infected cases were homogenized and used for cell inoculation. At 6, 24, 48 and 72 h post infection (hpi), EEHV-inoculated cells were observed for cytopathic effects (CPEs) or were assessed for EEHV infection by immunoperoxidase monolayer assay (IPMA) or quantitative PCR. The results were then compared to those of the mock-infected controls. Replication of EEHV in the tested cells was further determined by immunohistochemistry of cell pellets using anti-EEHV DNA polymerase antibodies or re-inoculated cells with supernatants obtained from passages 2 or 3 of the culture medium. The results reveal that no CPEs were observed in the tested cells, while immunolabeling for EEHV gB was observed in only U937 human myeloid leukemia cells. However, quantitation values of the EEHV terminase gene, as well as those of the EEHV gB or EEHV DNA polymerase proteins in U937 cells, gradually declined from passage 1 to passage 3. The findings of this study indicate that despite poor adaptation in U937 cells, this cell line displays promise and potential to be used for the isolation of EEHV1 and EEHV4 in vitro.
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Affiliation(s)
- Kornravee Photichai
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (K.P.); (T.G.); (T.S.); (P.C.)
| | - Thunyamas Guntawang
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (K.P.); (T.G.); (T.S.); (P.C.)
| | - Tidaratt Sittisak
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (K.P.); (T.G.); (T.S.); (P.C.)
| | - Varankpicha Kochagul
- Veterinary Diagnostic Laboratory, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Phongsakorn Chuammitri
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (K.P.); (T.G.); (T.S.); (P.C.)
| | - Chatchote Thitaram
- Department of Companion Animals and Wildlife Clinics, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand;
| | - Hathairat Thananchai
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Teera Chewonarin
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Korawan Sringarm
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Kidsadagon Pringproa
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand; (K.P.); (T.G.); (T.S.); (P.C.)
- Excellence Center in Veterinary Bioscience, Chiang Mai University, Chiang Mai 50100, Thailand
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11
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Wu H, Jin H, Wang L, Huo N, Liu D, Ding H, Cao Y, Liu C, Xi X, Jiao C, Spibey N, Shi J, Liu Y, Tian K. Generation and immunogenicity of virus-like particles based on mink enteritis virus capsid protein VP2 expressed in Sf9 cells. Arch Virol 2020; 165:2065-2071. [PMID: 32613291 DOI: 10.1007/s00705-020-04703-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/14/2020] [Indexed: 11/25/2022]
Abstract
Mink enteritis virus (MEV) is a parvovirus that causes acute enteritis in mink. The capsid protein VP2 of MEV is a major immunogenicity that is important for disease prevention. In this study, this protein was expressed in Spodoptera frugiperda 9 cells using a recombinant baculovirus system and was observed to self-assemble into virus-like particles (VLPs) with a high hemagglutination (HA) titer (1:216). A single-dose injection of VLPs (HA titer, 1:256) resulted in complete protection of mink against virulent MEV challenge for at least 180 days. These data suggest that these MEV VLPs could be used as a vaccine for the prevention of viral enteritis in mink.
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Affiliation(s)
- Hongchao Wu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Hongli Jin
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Lingxiao Wang
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Ningning Huo
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Di Liu
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Hangtian Ding
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Yujiao Cao
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Caihong Liu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Xiangfeng Xi
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Cuicui Jiao
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Norman Spibey
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Jing Shi
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Yuxiu Liu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China.
| | - Kegong Tian
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China.
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12
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Gill P, Hadian Amree A. AS-LAMP: A New and Alternative Method for Genotyping. Avicenna J Med Biotechnol 2020; 12:2-8. [PMID: 32153732 PMCID: PMC7035465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
In recent decades, different methods have been introduced for the genotyping of Single Nucleotide Polymorphisms (SNPs) and mutations in nucleic acid sequences. These methods have several applications ranging from agriculture to medicine. The Loop-mediated isothermal amplification (LAMP) method was first introduced by Notomi et al. Since then, different methods derived from LAMP have been extensively applied in detecting pathogens. The LAMP method is an isothermal technique that amplifies the target DNA segment using four different primers that have been uniquely designed for recognizing six distinct zones on the objective gene; the process of reaction continues at a constant temperature via a strand displacement reaction. Amplifying and detecting the targeted zone can be accomplished in one stage. Although the LAMP method is mostly used for pathogen detection, several studies have used this method for genotyping. The present article reviewed various studies that used the LAMP method for SNP detection. The outcomes indicated that the LAMP technique could be a reliable and alternative technique for genotyping. Further studies are recommended to use this approach for genotyping.
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Affiliation(s)
- Pooria Gill
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Arash Hadian Amree
- Student Research Committee, Thalassemia Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran,Corresponding author: Arash Hadian Amree, M.D., Ph.D. Candidate, Student Research Committee, Thalassemia Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran, Tel: +98 9111548344, Fax: +98 11 33361626, E-mail:
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13
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Viral Nonstructural Protein 1 Induces Mitochondrion-Mediated Apoptosis in Mink Enteritis Virus Infection. J Virol 2019; 93:JVI.01249-19. [PMID: 31484746 DOI: 10.1128/jvi.01249-19] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 08/26/2019] [Indexed: 12/24/2022] Open
Abstract
Mink enteritis virus (MEV), an autonomous parvovirus, causes acute hemorrhagic enteritis in minks. The molecular pathogenesis of MEV infection has not been fully understood. In this study, we observed significantly increased apoptosis in the esophagus, small intestine, mesenteric lymph nodes, and kidney in minks experimentally infected with strain MEVB. In vitro infection of feline F81 cells with MEVB decreased cell viability and induced cell cycle arrest at G1 phase and apoptosis. By screening MEV nonstructural proteins (NS1 and NS2) and structural proteins (VP1 and VP2), we demonstrated that the MEV NS1 induced apoptosis in both F81 and human embryonic kidney 293T (HEK293T) cells, similar to that induced during MEV infection in minks. We found that the NS1 protein-induced apoptosis in HEK293T cells was mediated not by the death receptor but by the mitochondrial pathway, as demonstrated by mitochondrial depolarization, opening of mitochondrial transition pore, release of cytochrome c, and activation of caspase-9 and -3. Moreover, in NS1-transfected cells, we observed an increase of Bax expression and its translocation to the mitochondria, as well as an increased ratio of the Bax/Bcl-2, reactive oxygen species (ROS) production, and activated p38 mitogen-activated protein kinase (MAPK) and p53. Taken together, our results demonstrated that MEV induces apoptosis through activation of p38 MAPK and the p53-mediated mitochondrial apoptotic pathway induced by NS1 protein, which sheds light on the molecular pathogenesis of MEV infection.IMPORTANCE MEV causes fatal hemorrhagic enteritis in minks. Apoptosis is a cellular mechanism that effectively sacrifices virus-infected cells to maintain homeostasis between the virus and host. In this study, we demonstrated that MEV induces apoptosis both in vivo and in vitro Mechanistically, the viral large nonstructural protein NS1 activates p38 MAPK, which leads p53 phosphorylation to mediate the mitochondrial apoptotic pathway but not the death receptor-mediated apoptotic pathway. This is the first report to uncover the mechanism underlying MEV-induced apoptosis.
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14
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Tsujimura K, Bannai H, Nemoto M, Kokado H. Loop-mediated isothermal amplification-fluorescent loop primer assay for the genotyping of a single nucleotide polymorphism at position 2254 in the viral DNA polymerase gene of equid alphaherpesvirus 1. J Vet Diagn Invest 2019; 31:640-644. [PMID: 31170890 DOI: 10.1177/1040638719856404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We developed a loop-mediated isothermal amplification (LAMP)-fluorescent loop primer (FLP) assay for genotyping the A/G2254 single nucleotide polymorphism (SNP) in the viral DNA polymerase gene of species Equid alphaherpesvirus 1 (EHV-1), which is associated with the neuropathogenic potential of this virus. In addition to the use of regular LAMP primers to amplify the target region, a 5'-FAM-labeled backward loop primer (FLB) and 3'-dabcyl-labeled quencher probe (QP) were designed for annealing curve analysis of the amplification product. The QP, which contacts the FLB, is located at the SNP site and has the A2254 allele. LAMP reactions were performed at 63°C for 40 min, and the subsequent annealing curve analyses were accomplished within 20 min. The LAMP-FLP assay could clearly differentiate A2254 and G2254 genotypes according to the difference in the annealing temperature of the QP between the 2 genotypes. Good agreement between the LAMP-FLP and the real-time PCR for genotyping of this SNP was observed in the detection of EHV-1 in equine clinical samples. The newly developed assay is a simple and rapid method for detecting and differentiating EHV-1 strains with A2254 and G2254 polymorphisms and would be suitable for clinical use.
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Affiliation(s)
- Koji Tsujimura
- Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan (Tsujimura, Bannai, Nemoto).,Japan Farriery Association, Minato-ku, Tokyo, Japan (Kokado)
| | - Hiroshi Bannai
- Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan (Tsujimura, Bannai, Nemoto).,Japan Farriery Association, Minato-ku, Tokyo, Japan (Kokado)
| | - Manabu Nemoto
- Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan (Tsujimura, Bannai, Nemoto).,Japan Farriery Association, Minato-ku, Tokyo, Japan (Kokado)
| | - Hiroshi Kokado
- Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan (Tsujimura, Bannai, Nemoto).,Japan Farriery Association, Minato-ku, Tokyo, Japan (Kokado)
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15
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Zhang D, Gao B, Zhao C, Liu H. Visualized Quantitation of Trace Nucleic Acids Based on the Coffee-Ring Effect on Colloid-Crystal Substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:248-253. [PMID: 30512960 DOI: 10.1021/acs.langmuir.8b03609] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We report a visualized quantitative detection method for nucleic acid amplification tests based on the coffee-ring effect on colloid-crystal substrates. The solution for loop-mediated isothermal amplification (LAMP) of DNA is drop cast on a colloid-crystal surface. After complete drying, a coffee ring containing the LAMP byproduct (i.e., magnesium pyrophosphate) is formed, and it is found that the width of the coffee ring is linearly correlated to the logarithm of the original DNA concentration before the isothermal amplification. Importantly, compared with other substrates, we found that the colloid-crystal substrate is an appropriate substrate for carrying out the assay of high sensitivity. On the basis of these findings, we develop a coffee-ring-based assay for quantitative readout of trace DNA in a sample. The assay requires 0.50 μL of the sample and is completed in 5 min in a homemade chamber with constant humidity. Semiquantitative detection of trace DNA is performed using naked eyes. With the use of a smartphone, the DNA in a sample can be quantitatively detected with a limit of detection of 20 copies.
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Affiliation(s)
- Dagan Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Bingbing Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Chao Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Hong Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
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