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ZHANG S, WANG C, MENG K, LIU J. Recombinase polymerase amplification-lateral flow dipstick (RPA-LFD) designed for rapid detection of canine distemper virus. J Vet Med Sci 2024; 86:584-591. [PMID: 38462524 PMCID: PMC11144539 DOI: 10.1292/jvms.23-0389] [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: 09/18/2023] [Accepted: 02/18/2024] [Indexed: 03/12/2024] Open
Abstract
In the present study, recombinase polymerase amplification (RPA) was combined with the colloidal gold lateral flow dipstick (LFD) method to establish a new, stable, and efficient assay for the detection of canine distemper virus (CDV). We designed a set of specific primers labeled with biotin and a specific probe labeled with dSpacer and C3 spacer, according to the conserved region in the N-terminal gene sequence of CDV. The reaction conditions and systems were then optimized, and the sensitivity and specificity were analyzed for potential clinical application. The results showed that the RPA-LFD assay for CDV detection was successfully established. We also found that the temperature in a closed fist (35°C) is optimal for the RPA reaction. The optimal ratio of primer to probe was 2:1. The minimum detection limit of the RPA-LFD assay was 1 × 101 the median tissue culture infective dose (TCID50)/mL. Using this assay with samples from experimentally infected dogs, CDV was detected in nasal secretions, eye secretions, and blood on the fourth day post infection. In summary, this novel RPA-LFD assay for CDV detection is simple to use, and preliminary findings indicate its high specificity and sensitivity.
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Affiliation(s)
- Shanshan ZHANG
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Chengyu WANG
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Keyin MENG
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Jun LIU
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
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Pinchon E, Henry S, Leon F, Fournier-Wirth C, Foulongne V, Cantaloube JF. Rapid Detection of Measles Virus Using Reverse Transcriptase/Recombinase Polymerase Amplification Coupled with CRISPR/Cas12a and a Lateral Flow Detection: A Proof-of-Concept Study. Diagnostics (Basel) 2024; 14:517. [PMID: 38472989 DOI: 10.3390/diagnostics14050517] [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: 01/05/2024] [Revised: 02/18/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The measles virus is highly contagious, and efforts to simplify its diagnosis are essential. A reverse transcriptase/recombinase polymerase amplification assay coupled with CRISPR/Cas12a and an immunochromatographic lateral flow detection (RT-RPA-CRISPR-LFD) was developed for the simple visual detection of measles virus. The assay was performed in less than 1 h at an optimal temperature of 42 °C. The detection limit of the assay was 31 copies of an RNA standard in the reaction tube. The diagnostic performances were evaluated on a panel of 27 measles virus RT-PCR-positive samples alongside 29 measles virus negative saliva samples. The sensitivity and specificity were 96% (95% CI, 81-99%) and 100% (95% CI, 88-100%), respectively, corresponding to an accuracy of 98% (95% CI, 94-100%; p < 0.0001). This method will open new perspectives in the development of the point-of-care testing diagnosis of measles.
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Affiliation(s)
- Elena Pinchon
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
| | - Steven Henry
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
| | - Fanny Leon
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
| | - Chantal Fournier-Wirth
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
| | - Vincent Foulongne
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
| | - Jean-François Cantaloube
- Pathogénèse et Contrôle des Infections Chroniques et Emergentes, Etablissement Français du Sang, Université de Montpellier, Inserm, 34184 Montpellier, France
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Tang J, Du H, Tang A, Jia N, Zhu J, Li C, Meng C, Liu G. Simultaneous detection and identification of Peste des petits ruminants Virus Lineages II and IV by MCA-Based real-time quantitative RT-PCR assay within single reaction. BMC Vet Res 2023; 19:11. [PMID: 36647038 PMCID: PMC9841696 DOI: 10.1186/s12917-023-03568-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/06/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Peste des petits ruminants (PPR) disease is a cross-species infectious disease that severely affects small ruminants and causes great losses to livestock industries in various countries. Distinguishing vaccine-immunized animals from naturally infected animals is an important prerequisite for the eradication of PPR. At present PPRV are classified into lineages I through IV, and only one vaccination strain, Nigeria/75/1, belongs to lineage II, but all of the epidemic strains in China at present are from lineage IV. RESULTS To achieve this goal, we developed an SYBR Green I real-time qRT-PCR method for rapid detection and identification of PPRV lineages II and IV by analyzing different melting curve analyses. The negative amplification of other commonly circulating viruses such as orf virus, goat poxvirus, and foot-and-mouth disease virus demonstrated that primers targeting the L gene of PPRV were extremely specific. The sensitivity of the assay was assessed based on plasmid DNA and the detection limit achieved was 100 copies of PPRV lineages II and IV. CONCLUSION Since the method has high sensitivity, specificity, and reproducibility, it will be effectively differentiated PPRV lineages II from PPRV lineages IV in PPRV infected animals.
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Affiliation(s)
- Jingyu Tang
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Hanyu Du
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Aoxing Tang
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Nannan Jia
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Jie Zhu
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Chuanfeng Li
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Chunchun Meng
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
| | - Guangqing Liu
- grid.410727.70000 0001 0526 1937Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 200241 Shanghai, PR China
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Research Progress on Emerging Viral Pathogens of Small Ruminants in China during the Last Decade. Viruses 2022; 14:v14061288. [PMID: 35746759 PMCID: PMC9228844 DOI: 10.3390/v14061288] [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: 05/18/2022] [Revised: 06/09/2022] [Accepted: 06/11/2022] [Indexed: 11/26/2022] Open
Abstract
China is the country with the largest number of domestic small ruminants in the world. Recently, the intensive and large-scale sheep/goat raising industry has developed rapidly, especially in nonpastoral regions. Frequent trading, allocation, and transportation result in the introduction and prevalence of new pathogens. Several new viral pathogens (peste des petits ruminants virus, caprine parainfluenza virus type 3, border disease virus, enzootic nasal tumor virus, caprine herpesvirus 1, enterovirus) have been circulating and identified in China, which has attracted extensive attention from both farmers and researchers. During the last decade, studies examining the etiology, epidemiology, pathogenesis, diagnostic methods, and vaccines for these emerging viruses have been conducted. In this review, we focus on the latest findings and research progress related to these newly identified viral pathogens in China, discuss the current situation and problems, and propose research directions and prevention strategies for different diseases in the future. Our aim is to provide comprehensive and valuable information for the prevention and control of these emerging viruses and highlight the importance of surveillance of emerging or re-emerging viruses.
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Qi L, Du Y. Diagnosis of disease relevant nucleic acid biomarkers with off-the-shelf devices. J Mater Chem B 2022; 10:3959-3973. [PMID: 35575030 DOI: 10.1039/d2tb00232a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Changes in the level of nucleic acids in blood may be correlated with some clinical disorders like cancer, stroke, trauma and autoimmune diseases, and thus, nucleic acids can serve as potential biomarkers for pathological processes. The requirement of technical equipment and operator expertise in effective information readout of modern molecular diagnostic technologies significantly restricted application outside clinical laboratories. The ability to detect nucleic acid biomarkers with off-the-shelf devices, which have the advantages of portability, simplicity, low cost and short response time, is critical to provide a prompt clinical result in circumstances where the laboratory instruments are not available. This review throws light on the current strategies and challenges for nucleic acid diagnosis with commercial portable devices, indicating the future prospect of portable diagnostic devices and making a great difference in improving the healthcare and disease surveillance in resource-limited areas.
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Affiliation(s)
- Lijuan Qi
- State key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, P. R. China. .,Department of Chemistry, University of Science and Technology of China, Anhui, P. R. China
| | - Yan Du
- State key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, P. R. China. .,Department of Chemistry, University of Science and Technology of China, Anhui, P. R. China
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Wang L, Wang Y, Wang F, Zhao M, Gao X, Chen H, Li N, Zhu Q, Liu L, Zhu W, Liu X, Chen Y, Zhou P, Lu Y, Wang K, Zhao W, Liang W. Development and Application of Rapid Clinical Visualization Molecular Diagnostic Technology for Cryptococcus neoformans/ C. gattii Based on Recombinase Polymerase Amplification Combined With a Lateral Flow Strip. Front Cell Infect Microbiol 2022; 11:803798. [PMID: 35096653 PMCID: PMC8790172 DOI: 10.3389/fcimb.2021.803798] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Cryptococcus neoformans (C. neoformans)/C. gattii can easily invade the human central nervous system and cause cryptococcal meningitis (CM). The clinical fatality rate of these fungi is extremely high and causes more than 180,000 deaths worldwide every year. At present, the common clinical identification methods of these fungi are traditional culture methods and Indian ink staining. In addition, enzyme-linked immunosorbent assay (ELISAs), polymerase chain reaction (PCR), real-time quantitative PCR detecting system (qPCR), mass spectrometry, and metagenomic next-generation sequencing (mNGS) have also been applied to detect these fungus. Due to the rapid progress of meningitis caused by C. neoformans/C. gattii infection, there is a desperate need for fast, sensitive, and on-site detection methods to meet the clinical diagnosis. Recombinase polymerase amplification (RPA) is a promising isothermal amplification technique that can compensate for the shortcomings of the above techniques, featuring short reaction time, high specificity, and high sensitivity, thus meeting the demand for in-field detection of C.neoformans/C. gattii. In our study, RPA- lateral flow strip (LFS) was used to amplify the capsule-associated gene, CAP64, of C. neoformans/C. gattii, and the primer-probe design was optimized by introducing base mismatches to obtain a specific and sensitive primer-probe combination for clinical testing, and specificity of the detection system was determined for 26 common clinical pathogens. This system was developed to obtain results in 20 min at an isothermal temperature of 37°C with a lower limit of detection as low as 10 CFU/μL or 1 fg/μL. A total of 487 clinical samples collected from multicenter multiplexes were tested to evaluate the detection performance of the RPA-LFS system, which revealed that the system could specifically detect C. neoformans/C. gattii, meeting the need for rapid, specific, and sensitive detection.
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Affiliation(s)
- Lei Wang
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China.,School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yan Wang
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Fang Wang
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Mengdi Zhao
- Department of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, China
| | - Xuzhu Gao
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Huimin Chen
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Na Li
- Lianyungang Second People's Hospital Affiliated to Bengbu Medical College, Lianyungang, China
| | - Qing Zhu
- Lianyungang Hospital Affiliated to Xuzhou Medical University, Lianyungang, China
| | - Lipin Liu
- Lianyungang Hospital Affiliated to Xuzhou Medical University, Lianyungang, China
| | - Wenjun Zhu
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Xia Liu
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Yujiao Chen
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Ping Zhou
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Yingzhi Lu
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Kun Wang
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
| | - Weiguo Zhao
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Wei Liang
- Department of Central Laboratory, Lianyungang Hospital Affiliated to Jiangsu University, Lianyungang, China
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Rapid Identification of Salmo salar Using a Combined Isothermal Recombinase Polymerase Amplification–Lateral Flow Strip Approach. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02128-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Cantera JL, White HN, Forrest MS, Stringer OW, Belizario VY, Storey HL, de Hostos EL, de los Santos T. Sensitive and semiquantitative detection of soil-transmitted helminth infection in stool using a recombinase polymerase amplification-based assay. PLoS Negl Trop Dis 2021; 15:e0009782. [PMID: 34516554 PMCID: PMC8459997 DOI: 10.1371/journal.pntd.0009782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 09/23/2021] [Accepted: 09/01/2021] [Indexed: 01/03/2023] Open
Abstract
Background Soil-transmitted helminths (STHs) are parasitic nematodes that inhabit the human intestine. They affect more than 1.5 billion people worldwide, causing physical and cognitive impairment in children. The global strategy to control STH infection includes periodic mass drug administration (MDA) based on the results of diagnostic testing among populations at risk, but the current microscopy method for detecting infection has diminished sensitivity as the intensity of infection decreases. Thus, improved diagnostic tools are needed to support decision-making for STH control programs. Methodology We developed a nucleic acid amplification test based on recombinase polymerase amplification (RPA) technology to detect STH in stool. We designed primers and probes for each of the four STH species, optimized the assay, and then verified its performance using clinical stool samples. Principal findings Each RPA assay was as sensitive as a real-time polymerase chain reaction (PCR) assay in detecting copies of cloned target DNA sequences. The RPA assay amplified the target in DNA extracted from human stool samples that were positive for STH based on the Kato-Katz method, with no cross-reactivity of the non-target genomic DNA. When tested with clinical stool samples from patients with infections of light, moderate, and heavy intensity, the RPA assays demonstrated performance comparable to that of real-time PCR, with better results than Kato-Katz. This new rapid, sensitive and field-deployable method for detecting STH infections can help STH control programs achieve their goals. Conclusions Semi-quantitation of target by RPA assay is possible and is comparable to real-time PCR. With proper instrumentation, RPA assays can provide robust, semi-quantification of STH DNA targets as an alternative field-deployable indicator to counts of helminth eggs for assessing infection intensity. More than 1.5 billion people are infected with parasitic intestinal worms called soil-transmitted helminths. Infection is transmitted by helminth eggs in human feces, which contaminate soil in areas with poor sanitation. Adverse health effects include physical and cognitive impairment in children. A key strategy to control infection is periodic mass drug administration for populations with a high prevalence of disease based on the results of diagnostic testing. The current microscopy method for detecting infection, however, has limited ability to detect disease as the intensity of infection decreases with repeated mass drug administration. To address limitations of current diagnostic methods, we developed a novel technique to diagnose infections, including those at very low levels of intensity, by detecting helminth DNA in stool samples. Our initial studies suggest that the new diagnostic technique reliably detects the presence of intestinal worms, even at low intensities of infection, and may be more useful than currently available diagnostic tools for guiding the use of periodic mass drug administration to eliminate disease in low-resource settings.
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Affiliation(s)
| | | | | | | | - Vicente Y. Belizario
- Department of Parasitology, College of Public Health, University of the Philippines, Ermita, Manila, Philippines
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Alfred N, Qian B, Qin X, Yin X, Prajapati M, Dou Y, Li Y, Zhang Z. Inhibition of eIF2α Phosphorylation by Peste des Petits Ruminant Virus Phosphoprotein Facilitates Viral Replication. Front Vet Sci 2021; 8:645571. [PMID: 34295932 PMCID: PMC8290123 DOI: 10.3389/fvets.2021.645571] [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: 12/23/2020] [Accepted: 05/31/2021] [Indexed: 11/13/2022] Open
Abstract
Peste des petits ruminant virus (PPRV) causes a highly contagious disease in small ruminants. The molecular mechanism of PPRV replication and its interactions with hosts are poorly studied. In other paramyxoviruses, the viral phosphoprotein (P) has been associated with multiple functions for key biological processes such as the regulation of transcription, translation, and the control of cell cycle. Phosphorylation of the α subunit of eukaryotic initiation factor 2 (eIF2α) is an important process for gene regulation in host cells under stress, including viral infection. In the present study, molecular mechanisms associated with PPRV replication and viral interaction with host cells were investigated. We describe the ability of PPRV to dephosphorylate eIF2α and the potential of PPRV P protein to induce the host cellular growth arrest DNA damage protein (GADD34), which is known to be associated with eIF2α dephosphorylation. Furthermore, we observed that PPRV P protein alone could block PERK/eIF2α phosphorylation. We speculate that PPRV exploits eIF2α dephosphorylation to facilitate viral replication and that PPRV P protein is involved in this molecular mechanism. This work provides new insights into further understanding PPRV pathobiology and its viral/host interactions.
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Affiliation(s)
- Niyokwishimira Alfred
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Bang Qian
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaodong Qin
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiangping Yin
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Meera Prajapati
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Yongxi Dou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yanmin Li
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Zhidong Zhang
- College of Animal Husbandry and Veterinary Medicine, Southwest Minzu University, Chengdu, China
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10
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Huang P, Yu Y, Meng X, Wang T, Yan F, Li E, Shi Z, He H, Yang S, Xia X, Wang J, Feng N. Development of recombinase polymerase amplification assays for rapid and visual detection of canine distemper virus infecting giant panda. BMC Vet Res 2021; 17:172. [PMID: 33892731 PMCID: PMC8063184 DOI: 10.1186/s12917-021-02880-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 04/14/2021] [Indexed: 12/29/2022] Open
Abstract
Background Canine distemper virus (CDV) is an enveloped negative-strand RNA virus that exhibits a high mutation rate and continuously expands the range of hosts. Notably, CDV has infected giant panda with spill over from viral reservoirs in canines. Giant pandas (Ailuropoda melanoleuca), especially captive pandas, are known to be susceptible to natural infection with CDV. The high fatality rate of CDV poses a serious threat to the safety of the giant panda population. However, vaccines or drugs for canine distemper in giant pandas have not been developed to date. Therefore, a rapid test that can achieve accurate onsite detection of CDV is important to enable the timely implementation of control measures. In this study, we established a nucleic acid visualization assay for targeting the CDV N gene by using combines reverse transcription recombinase polymerase amplification with a closed vertical flow visualization strip (RT-RPA-VF). Results The RT-RPA-VF assay does not require sophisticated equipment, and it was determined to provide rapid detection at 35 °C for 30 min, while the limit of detection was 5 × 101 copies/μl RNA transcripts and 100.5 TCID50 ml− 1 viruses. The results showed that the assay was high specific to CDV and had no cross-reactivity with other viruses infecting the giant panda. Compared with RT-qPCR, RT-RPA-VF assay had a sensitivity of 100% and a specificity of 100% in 29 clinical samples. The coincidence rate between RT-RPA-VF and RT-qPCR was 100% (kappa = 1), indicating that the RT-RPA-VF assay possessed good diagnostic performance on clinical samples. Conclusions The RT-RPA-VF provides a novel alternative for the simple, sensitive, and specific identification of CDV and showed great potential for point of care diagnostics for captive and wild giant panda.
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Affiliation(s)
- Pei Huang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Yue Yu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
| | - Xianyong Meng
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Tiecheng Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China.,College of Life Sciences, Shandong Normal University, Jinan, China
| | - Feihu Yan
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Entao Li
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Zhikang Shi
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Hongbin He
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Songtao Yang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.,Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Xianzhu Xia
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Jianzhong Wang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.
| | - Na Feng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China. .,College of Life Sciences, Shandong Normal University, Jinan, China.
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Development of a reverse transcription recombinase polymerase based isothermal amplification coupled with lateral flow immunochromatographic assay (CTV-RT-RPA-LFICA) for rapid detection of Citrus tristeza virus. Sci Rep 2020; 10:20593. [PMID: 33244066 PMCID: PMC7693335 DOI: 10.1038/s41598-020-77692-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 10/26/2020] [Indexed: 01/27/2023] Open
Abstract
Tristeza is a highly destructive disease of citrus caused by the phloem-limited, flexuous filamentous Citrus tristeza virus (CTV) in the genus Closterovirus and the family Closteroviridae. It has been a major constraint for higher productivity and has destroyed millions of citrus trees globally. CTV is graft transmissible and spread through use of virus infected nursery plants. Therefore, virus detection by using specific and reliable diagnostic tools is very important to mitigate disease outbreaks. Currently, the standard molecular techniques for CTV detection include RT-PCR and RT-qPCR. These diagnostic methods are highly sensitive but time consuming, labor intensive and require sophisticated expensive instruments, thus not suitable for point-of-care use. In the present study, we report the development of a rapid, sensitive, robust, reliable, and highly specific reverse transcription-RPA technique coupled with a lateral flow immunochromatographic assay (CTV-RT-RPA-LFICA). RT-RPA technique was standardized to amplify the coat protein gene of CTV (CTV-p25) and detect double labeled amplicons on a sandwich immunoassay by designing specific labeled primer pair and probe combinations. The optimally performing primer set (CTRPA-F1/CTRPA-R9-Btn) and the corresponding TwistAmp nfo probe (CTRPA-Probe) was optimized for temperature and reaction time using purified cDNA and viral RNA as template. The sensitivity of the developed assay was compared with other detection techniques using in vitro-transcribed RNA. The efficacy and specificity of the assay was evaluated using CTV positive controls, healthy samples, field grown citrus plants of unknown status, and other virus and bacterial pathogens that infect citrus plants. The RT-RPA-LFICA was able to detect ≤ 141 fg of RNA when cDNA used as a template. The assay detected ≤ 0.23 ng/µl of CTV RNA when directly used as template without cross-reactivity with other citrus pathogens. Best results were achieved at the isothermal temperature of 40 °C within 15-20 min. The study demonstrated that RT-RPA-LFICA has potential to become an improved detection technique for end users in bud-wood certification and quarantine programs and a promising platform for rapid point-of-care diagnostics for citrus farmers and small nurseries in low resource settings.
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Hobbs EC, Colling A, Gurung RB, Allen J. The potential of diagnostic point-of-care tests (POCTs) for infectious and zoonotic animal diseases in developing countries: Technical, regulatory and sociocultural considerations. Transbound Emerg Dis 2020; 68:1835-1849. [PMID: 33058533 PMCID: PMC8359337 DOI: 10.1111/tbed.13880] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 09/17/2020] [Accepted: 10/10/2020] [Indexed: 02/06/2023]
Abstract
Remote and rural communities in low‐ and middle‐income countries (LMICs) are disproportionately affected by infectious animal diseases due to their close contact with livestock and limited access to animal health personnel). However, animal disease surveillance and diagnosis in LMICs is often challenging, and turnaround times between sample submission and diagnosis can take days to weeks. This diagnostic gap and subsequent disease under‐reporting can allow emerging and transboundary animal pathogens to spread, with potentially serious and far‐reaching consequences. Point‐of‐care tests (POCTs), which allow for rapid diagnosis of infectious diseases in non‐laboratory settings, have the potential to significantly disrupt traditional animal health surveillance paradigms in LMICs. This literature review sought to identify POCTs currently available for diagnosing infectious animal diseases and to determine facilitators and barriers to their use and uptake in LMICs. Results indicated that some veterinary POCTs have been used for field‐based animal disease diagnosis in LMICs with good results. However, many POCTs target a small number of key agricultural and zoonotic animal diseases, while few exist for other important animal diseases. POCT evaluation is rarely taken beyond the laboratory and into the field where they are predicted to have the greatest impact, and where conditions can greatly affect test performance. A lack of mandated test validation regulations for veterinary POCTs has allowed tests of varying quality to enter the market, presenting challenges for potential customers. The use of substandard, improperly validated or unsuitable POCTs in LMICs can greatly undermine their true potential and can have far‐reaching negative impacts on disease control. To successfully implement novel rapid diagnostic pathways for animal disease in LMICs, technical, regulatory, socio‐political and economic challenges must be overcome, and further research is urgently needed before the potential of animal disease POCTs can be fully realized.
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Affiliation(s)
- Emma C Hobbs
- Australian Centre for Disease Preparedness (ACDP, formerly AAHL), Commonwealth Scientific and Industrial Research Organisation (CSIRO), East Geelong, VIC, Australia
| | - Axel Colling
- Australian Centre for Disease Preparedness (ACDP, formerly AAHL), Commonwealth Scientific and Industrial Research Organisation (CSIRO), East Geelong, VIC, Australia
| | - Ratna B Gurung
- National Centre for Animal Health, Department of Livestock, Ministry of Agriculture and Forests, Royal Government of Bhutan, Thimphu, Bhutan
| | - John Allen
- Australian Centre for Disease Preparedness (ACDP, formerly AAHL), Commonwealth Scientific and Industrial Research Organisation (CSIRO), East Geelong, VIC, Australia
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13
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Tsai SK, Chen CC, Lin HJ, Lin HY, Chen TT, Wang LC. Combination of multiplex reverse transcription recombinase polymerase amplification assay and capillary electrophoresis provides high sensitive and high-throughput simultaneous detection of avian influenza virus subtypes. J Vet Sci 2020; 21:e24. [PMID: 32233132 PMCID: PMC7113572 DOI: 10.4142/jvs.2020.21.e24] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/25/2019] [Accepted: 12/30/2019] [Indexed: 11/20/2022] Open
Abstract
The pandemic of avian influenza viruses (AIVs) in Asia has caused enormous economic loss in poultry industry and human health threat, especially clade 2.3.4.4 H5 and H7 subtypes in recent years. The endemic chicken H6 virus in Taiwan has also brought about human and dog infections. Since wild waterfowls is the major AIV reservoir, it is important to monitor the diversified subtypes in wildfowl flocks in early stage to prevent viral reassortment and transmission. To develop a more efficient and sensitive approach is a key issue in epidemic control. In this study, we integrate multiplex reverse transcription recombinase polymerase amplification (RT-RPA) and capillary electrophoresis (CE) for high-throughput detection and differentiation of AIVs in wild waterfowls in Taiwan. Four viral genes were detected simultaneously, including nucleoprotein (NP) gene of all AIVs, hemagglutinin (HA) gene of clade 2.3.4.4 H5, H6 and H7 subtypes. The detection limit of the developed detection system could achieve as low as one copy number for each of the four viral gene targets. Sixty wild waterfowl field samples were tested and all of the four gene signals were unambiguously identified within 6 h, including the initial sample processing and the final CE data analysis. The results indicated that multiplex RT-RPA combined with CE was an excellent alternative for instant simultaneous AIV detection and subtype differentiation. The high efficiency and sensitivity of the proposed method could greatly assist in wild bird monitoring and epidemic control of poultry.
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Affiliation(s)
- Shou Kuan Tsai
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Chen Chih Chen
- Institute of Wildlife Conservation, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan.,Animal Biologics Pilot Production Center, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
| | - Han Jia Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Han You Lin
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Ting Tzu Chen
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - Lih Chiann Wang
- School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan.
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14
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Wong CL, Yong CY, Ong HK, Ho KL, Tan WS. Advances in the Diagnosis of Foot-and-Mouth Disease. Front Vet Sci 2020; 7:477. [PMID: 32974392 PMCID: PMC7473413 DOI: 10.3389/fvets.2020.00477] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/26/2020] [Indexed: 11/13/2022] Open
Abstract
Foot-and-mouth disease (FMD) is a devastating livestock disease caused by foot-and-mouth disease virus (FMDV). Outbreaks of this disease in a country always result in conspicuous economic losses to livestock industry and subsequently lead to serious socioeconomic damages due to the immediate imposition of trade embargo. Rapid and accurate diagnoses are imperative to control this infectious virus. In the current review, enzyme-linked immunosorbent assay (ELISA)-based methods used in FMD diagnosis are extensively reviewed, particularly the sandwich, liquid-phase blocking, and solid-phase competition ELISA. The differentiation of infected animals from vaccinated animals using ELISA-based methods is also highlighted, in which the role of 3ABC polyprotein as a marker is reviewed intensively. Recently, more studies are focusing on the molecular diagnostic methods, which detect the viral nucleic acids based on reverse transcription-polymerase chain reaction (RT-PCR) and RT-loop-mediated isothermal amplification (RT-LAMP). These methods are generally more sensitive because of their ability to amplify a minute amount of the viral nucleic acids. In this digital era, the RT-PCR and RT-LAMP are progressing toward the mobile versions, aiming for on-site FMDV diagnosis. Apart from RT-PCR and RT-LAMP, another diagnostic assay specifically designed for on-site diagnosis is the lateral flow immunochromatographic test strips. These test strips have some distinct advantages over other diagnostic methods, whereby the assay often does not require the aid of an external device, which greatly lowers the cost per test. In addition, the on-site diagnostic test can be easily performed by untrained personnel including farmers, and the results can be obtained in a few minutes. Lastly, the use of FMDV diagnostic assays for progressive control of the disease is also discussed critically.
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Affiliation(s)
- Chuan Loo Wong
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Chean Yeah Yong
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia.,Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
| | - Hui Kian Ong
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Kok Lian Ho
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Wen Siang Tan
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia.,Laboratory of Vaccines and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, Serdang, Malaysia
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15
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Prajapati M, Dou Y, Zhu X, Zhao S, Alfred N, Li Y, Zhang Z. Development of an Enzyme-Linked Immunosorbent Assay Based on CD150/SLAM for the Detection of Peste des Petits Ruminant Virus. Front Vet Sci 2020; 7:196. [PMID: 32411735 PMCID: PMC7198758 DOI: 10.3389/fvets.2020.00196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/25/2020] [Indexed: 11/13/2022] Open
Abstract
Peste des petits ruminant (PPR) is an economically important severe viral disease of small ruminants that affects primarily the respiratory and digestive tract. Specific detection of the PPR virus (PPRV) antigen plays an important role in the disease control and eradication program. In this study, an indirect enzyme-linked immunosorbent assay (ELISA) based on the recombinant goat signaling lymphocyte activation molecule (SLAM) as the capture ligand was successfully developed for the detection of the PPRV antigen (PPRV SLAM-iELISA). The assay was highly specific for PPRV with no cross-reactions among foot and mouth disease virus, Orf virus, sheep pox virus, and goat pox virus and had a sensitivity with a detection limit of 1.56 × 101 TCID50/reaction (50 μl). Assessment of 136 samples showed that the developed PPRV SLAM-iELISA was well correlated with real-time RT-qPCR assays and commercially available sandwich ELISA for detection of PPRV and showed relative sensitivity and specificity of 93.75 and 100.83%, respectively. These results suggest that the developed PPRV SLAM-iELISA is suitable for specific detection of the PPRV antigen. This study demonstrated for the first time that the goat SLAM, the cellular receptor for PPRV, can be used for the development of a diagnostic method for the detection of PPRV.
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Affiliation(s)
- Meera Prajapati
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,CAAS-ILRI Joint Laboratory for Ruminant Disease Control, Lanzhou Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Lanzhou, China.,Animal Health Research Division, Nepal Agricultural Research Council, Lalitpur, Nepal
| | - Yongxi Dou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xueliang Zhu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Shuaiyang Zhao
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Niyokwishimira Alfred
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yanmin Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhidong Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.,CAAS-ILRI Joint Laboratory for Ruminant Disease Control, Lanzhou Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Lanzhou, China
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16
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Lei R, Wang X, Zhang D, Liu Y, Chen Q, Jiang N. Rapid isothermal duplex real-time recombinase polymerase amplification (RPA) assay for the diagnosis of equine piroplasmosis. Sci Rep 2020; 10:4096. [PMID: 32139744 PMCID: PMC7058082 DOI: 10.1038/s41598-020-60997-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/19/2020] [Indexed: 12/21/2022] Open
Abstract
Equine piroplasmosis (EP) is a severe disease of horses caused by the tick-borne protozoa Theileria equi (T. equi) and Babesia caballi (B. caballi). Infectious carriers are not always symptomatic, meaning there is a risk to non-enzootic areas. Regulatory tests for EP include sero-epidemiological methods for equine babesiosis, but these lack specificity due to cross-reactivity with other Babesia species. In this study, we present a real-time quantitative recombinase polymerase amplification (qRPA) method for fast simultaneous detection of both T. equi and B. caballi. In this method, primers and probes targeting the 18S rRNA gene of both T. equi and B. caballi, the ema-1 gene of T. equi and the bc48 gene of B. caballi were designed and evaluated. The sensitivity of qRPA was evaluated using the pUC57 plasmid DNA containing the target gene. For the pUC57-bc48 gene DNA, the R2 value was 0.983 for the concentration range 0.2 ng (4.1 × 107 DNA copies) to 2.0 fg (4.1 × 101 DNA copies). For the pUC57-ema gene DNA, the R2 value was 0.993 for the concentration range 0.2 ng (5.26 × 107 DNA copies) to 2.0 fg (5.26 × 102 DNA copies). For the pUC57-Bc18S gene DNA the R2 value was 0.976 for the concentration range 2.0 ng (4.21 × 108 DNA copies) to 2.0 fg (4.21 × 102 DNA copies). For the pUC57-Te18S gene DNA, the R2 value was 0.952 (Fig. S3b) for the concentration range 2.0 ng (4.16 × 108 DNA copies) to 2.0 fg (4.16 × 102 DNA copies). Furthermore, a duplex qRPA analysis was developed and optimized and the results showed that primers and probes targeting for the bc48 gene of B. caballi and the 18S rRNA gene of T. equi is the best combination for a duplex qRPA analysis in one reaction. The developed duplex qRPA assay has good specificity, and had negative amplification for several similar parasite. For DNA extracted from real horse blood specimens, this qRPA method has comparable sensitivity to traditional qPCR, but a simpler and more rapid operating process to obtain positive amplification. The qRPA, including the duplex strategy described here, could allow fast identification of the EP-causing T. equi and B. caballi, showing great potential for on-site EP screening of horses.
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Affiliation(s)
- Rong Lei
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Xinyi Wang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, Key Laboratory of Zoonosis, Shenyang Agricultural University, Shenyang, 110866, China.,College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China
| | - Di Zhang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, China
| | - Yize Liu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, Key Laboratory of Zoonosis, Shenyang Agricultural University, Shenyang, 110866, China.,The Research Unit for Pathogenic Mechanisms of Zoonotic Parasites, Chinese Academy of Medical Sciences, 120 Dongling Road, Shenyang, 110866, China
| | - Qijun Chen
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, Key Laboratory of Zoonosis, Shenyang Agricultural University, Shenyang, 110866, China.,The Research Unit for Pathogenic Mechanisms of Zoonotic Parasites, Chinese Academy of Medical Sciences, 120 Dongling Road, Shenyang, 110866, China
| | - Ning Jiang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, Key Laboratory of Zoonosis, Shenyang Agricultural University, Shenyang, 110866, China. .,The Research Unit for Pathogenic Mechanisms of Zoonotic Parasites, Chinese Academy of Medical Sciences, 120 Dongling Road, Shenyang, 110866, China.
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17
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Detection of Helminth Ova in Wastewater Using Recombinase Polymerase Amplification Coupled to Lateral Flow Strips. WATER 2020. [DOI: 10.3390/w12030691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Ascaris lumbricoides is a major soil-transmitted helminth that is highly infective to humans. The ova of A. lumbricoides are able to survive wastewater treatment, thus making it an indicator organism for effective water treatment and sanitation. Hence, Ascaris ova must be removed from wastewater matrices for the safe use of recycled water. Current microscopic techniques for identification and enumeration of Ascaris ova are laborious and cumbersome. Polymerase chain reaction (PCR)-based techniques are sensitive and specific, however, major constraints lie in having to transport samples to a centralised laboratory, the requirement for sophisticated instrumentation and skilled personnel. To address this issue, a rapid, highly specific, sensitive, and affordable method for the detection of helminth ova was developed utilising recombinase polymerase amplification (RPA) coupled with lateral flow (LF) strips. In this study, Ascaris suum ova were used to demonstrate the potential use of the RPA-LF assay. The method was faster (< 30 min) with optimal temperature at 37 °C and greater sensitivity than PCR-based approaches with detection as low as 2 femtograms of DNA. Furthermore, ova from two different helminth genera were able to be detected as a multiplex assay using a single lateral flow strip, which could significantly reduce the time and the cost of helminth identification. The RPA-LF system represents an accurate, rapid, and cost-effective technology that could replace the existing detection methods, which are technically challenged and not ideal for on-site detection in wastewater treatment plants.
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18
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Kinimi E, Odongo S, Muyldermans S, Kock R, Misinzo G. Paradigm shift in the diagnosis of peste des petits ruminants: scoping review. Acta Vet Scand 2020; 62:7. [PMID: 31996243 PMCID: PMC6988203 DOI: 10.1186/s13028-020-0505-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 01/18/2020] [Indexed: 11/10/2022] Open
Abstract
Peste des petits ruminants virus causes a highly contagious disease, which poses enormous economic losses in domestic animals and threatens the conservation of wild herbivores. Diagnosis remains a cornerstone to the Peste des petits ruminants Global Control and Eradication Strategy, an initiative of the World Organisation for Animal Health and the Food and Agriculture Organisation. The present review presents the peste des petits ruminants diagnostic landscape, including the practicality of commercially available diagnostic tools, prototype tests and opportunities for new technologies. The most common peste des petits ruminants diagnostic tools include; agar gel immunodiffusion, counter-immunoelectrophoresis, enzyme-linked immunosorbent assays, reverse transcription polymerase chain reaction either gel-based or real-time, reverse transcription loop-mediated isothermal amplification, reverse transcription recombinase polymerase amplification assays, immunochromatographic lateral flow devices, luciferase immunoprecipitation system and pseudotype-based assays. These tests vary in their technical demands, but all require a laboratory with exception of immunochromatographic lateral flow and possibly reverse transcription loop-mediated isothermal amplification and reverse transcription recombinase polymerase amplification assays. Thus, we are proposing an efficient integration of diagnostic tests for rapid and correct identification of peste des petits ruminants in endemic zones and to rapidly confirm outbreaks. Deployment of pen-side tests will improve diagnostic capacity in extremely remote settings and susceptible wildlife ecosystems, where transportation of clinical samples in the optimum cold chain is unreliable.
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19
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Mohandas A, Bhat AI. Recombinase polymerase amplification assay for the detection of piper yellow mottle virus infecting black pepper. Virusdisease 2020; 31:38-44. [PMID: 32206697 DOI: 10.1007/s13337-019-00566-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 12/23/2019] [Indexed: 12/19/2022] Open
Abstract
Recombinase polymerase amplification (RPA) is a quick, specific, sensitive molecular tool carried out at a constant temperature for pathogen detection. In the present study, RPA and reverse transcription (RT) RPA assays were optimized for the detection of piper yellow mottle virus (PYMoV) infecting black pepper. Out of the eight primer pairs targeted to amplify open reading frames (ORFs) 2 and 3 of the virus, the primer pair targeted to ORF2 gave specific amplification only with DNA isolated from infected plant but not with healthy plant. A magnesium acetate concentration of 18 mM, 40 min of incubation time and a temperature of 37-42 °C was found optimum for detection of the virus in RPA assay. Comparison of sensitivity of detection revealed that RPA could detect the virus up to 10-5 dilution of the total DNA while PCR could detect the virus up to 10-4 dilution indicating that RPA is 10 times more sensitive than PCR. RPA was further simplified using crude extract as template which could detect the virus up to 10-3 dilution. RT-RPA was optimized for the detection of PYMoV using total RNA isolated from infected plants as the template. Both RT-RPA and RPA assays were validated using field samples of black pepper representing different varieties and geographical regions by using CTAB isolated DNA, crude DNA extract and cDNA. Our study showed that RPA and RT-RPA can be successfully adopted as a substitute to PCR for detection of PYMoV infecting black pepper.
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Affiliation(s)
- Anju Mohandas
- Division of Crop Protection, ICAR-Indian Institute of Spices Research, Kozhikode, Kerala 673 012 India
| | - A I Bhat
- Division of Crop Protection, ICAR-Indian Institute of Spices Research, Kozhikode, Kerala 673 012 India
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20
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Gumaa MM, Cao X, Li Z, Lou Z, Zhang N, Zhang Z, Zhou J, Fu B. Establishment of a recombinase polymerase amplification (RPA) assay for the detection of Brucella spp. Infection. Mol Cell Probes 2019; 47:101434. [PMID: 31401295 PMCID: PMC7127669 DOI: 10.1016/j.mcp.2019.101434] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/21/2019] [Accepted: 08/07/2019] [Indexed: 11/17/2022]
Abstract
Brucellosis is a worldwide re-emerging zoonosis. It has an economic impact due to abortion and loss of fertility in livestock. In this study, Real-time recombinase polymerase amplification (RT-RPA-BP26) targeting Brucella spp. bp26 gene and Lateral flow dipstick (LFD-RPA-IS711) combined with SYBR- Green recombinase polymerase amplification (RPA) targeting insertion sequence IS711 region of Brucella spp. bp26 gene, was developed to detect Brucella spp. from different sample types in domestic animals. The sensitivity and specificity of the two developed RPAs were compared with real-time PCR, PCR, and Rose Bengal Plate Test (RBPT). The analytical sensitivity and detection limit of Real-time RPA and LFD RPA were four and six copies per reaction respectively. The detection of six colony forming units (CFU) of the bacteria-bearing construct with the target sequence was within 20 min at 40 °C for Real-time RPA and 37 °C for LFD RPA. The LFD RPA could work at temperatures between 30 and 35 °C and could be completed within 10–30 min. No significant differences were observed when comparing the results from Real-time RPA and LFD RPA to Real-time PCR and PCR. Both methods showed no cross reactivity with Chlamydia abortus, Toxoplasma gondii, Salmonella typhimurium, and Escherichia coli. In conclusion, RPA is a useful and convenient field and point of care test for brucellosis. RPA essays have been developed for detection of Brucella spp. Kappa analysis showed perfect agreement with RT-PCT Nd PCR.
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Affiliation(s)
- M M Gumaa
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Xiaoan Cao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhaocai Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhongzi Lou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Nianzhang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Zhijun Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China.
| | - Jizhang Zhou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China
| | - Baoquan Fu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases of Ministry of Agriculture, Key Laboratory of Veterinary Public Health of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, PR China
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21
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Ma L, Zeng F, Huang B, Zhu Y, Wu M, Xu F, Xiao L, Huang R, Ma J, Cong F, Guo P. Point-of-care diagnostic assay for rapid detection of porcine deltacoronavirus using the recombinase polymerase amplification method. Transbound Emerg Dis 2019; 66:1324-1331. [PMID: 30801935 PMCID: PMC7168525 DOI: 10.1111/tbed.13155] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/24/2019] [Accepted: 02/15/2019] [Indexed: 12/13/2022]
Abstract
Porcine deltacoronavirus (PDCoV) has emerged and spread throughout the porcine industry in many countries over the last 6 years. PDCoV caused watery diarrhoea, vomiting and dehydration in newborn piglets. A sensitive diagnostic method would be beneficial to the prevention and control of PDCoV infection. Recombinase polymerase amplification (RPA) is an isothermal amplification method which has been widely used for virus detection. A probe-based reverse transcription RPA (RT-RPA) assay was developed for real-time detection of PDCoV. The amplification can be finished in 20 min and fluorescence monitoring was performed by a portable device. The lowest detection limit of the PDCoV RT-RPA assay was 100 copies of RNA molecules per reaction; moreover, the RT-RPA assay had no cross-reaction with other common swine viruses. The clinical performance of the RT-RPA assay was evaluated using 108 clinical samples (54 intestine specimens and 54 faecal swab specimens). The coincidence rate of the detection results for clinical samples between RT-RPA and RT-qPCR was 97.2%. In summary, the real-time RT-RPA assay offers a promising alternative to RT-qPCR for point-of-care detection of PDCoV.
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Affiliation(s)
- Lei Ma
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fanwen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Bihong Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Yujun Zhu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Miaoli Wu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fengjiao Xu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Li Xiao
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Ren Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Jingyun Ma
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Feng Cong
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Pengju Guo
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
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22
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Xi Y, Xu CZ, Xie ZZ, Zhu DL, Dong JM, Xiao G. Development of a reverse transcription recombinase polymerase amplification assay for rapid detection of human respiratory syncytial virus. Mol Cell Probes 2019; 45:8-13. [PMID: 30922817 DOI: 10.1016/j.mcp.2019.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 02/06/2023]
Abstract
Respiratory syncytial virus (RSV) is one of the most important causative agents that causing respiratory tract infection in children and associated with high morbidity and mortality. A diagnostic method would be a robust tool for identification of RSV infection, especially in the resource-limited settings. Recombinase polymerase amplification (RPA) is a novel isothermal amplification technique which has been widely employed to detect human/animal pathogens. In present study, a probe-based reverse transcription RPA (RT-RPA) assay was established for the detection of RSV. The primers and probe were designed based on the sequences of the conserved nucleocapsid (N) gene. The minimal detection limit of the RT-RPA assay for the detection of RSV B was 19 copies of RNA molecules at 95% probability, whereas the detection limit for RSV A was 104 copies molecule. The assay was RSV-specific since it had no non-specific reactions with other common human pathogens. The clinical performance of the RT-RPA assay was validated using 188 nasopharyngeal aspirates (NPAs). The nucleic acid extraction of the samples was performed by use of the magnetic bead-based kit which didn't require the heavy and expensive centrifuge. The coincidence rates between RT-RPA and qRT-PCR for the clinical samples was 96%, indicating the RT-RPA assay had good diagnostic performance on clinical samples. The real-time RT-RPA assay combined with the manual genome extraction method make it potential to detect clinical samples in field, providing a possible solution for RSV diagnosis in remote rural areas in developing countries.
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Affiliation(s)
- Yun Xi
- Department of Clinical Laboratory, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Chang-Zhi Xu
- Department of Clinical Laboratory, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhi-Zhi Xie
- Department of Clinical Laboratory, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Dong-Lin Zhu
- Department of Clinical Laboratory, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jie-Ming Dong
- Department of Clinical Laboratory, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Gang Xiao
- Department of Clinical Laboratory, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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Lei R, Kong J, Qiu Y, Chen N, Zhu S, Wang X, Wu P. Rapid detection of the pathogenic fungi causing blackleg of Brassica napus using a portable real-time fluorescence detector. Food Chem 2019; 288:57-67. [PMID: 30902315 DOI: 10.1016/j.foodchem.2019.02.089] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 01/31/2019] [Accepted: 02/23/2019] [Indexed: 12/20/2022]
Abstract
The fungus Leptosphaeria maculans leading to Phoma stem canker (blackleg) of Brassica napus (oilseed rape, canola) produces the phytotoxin sirodesmin PL, which is responsible for major yield losses of oilseed rape worldwide. Polymerase chain reaction (PCR) remains the gold standard diagnostic tool for L. maculans, but the required expensive equipment and long time make it inappropriate for fast field test. Herein, a portable system for rapid assaying L. maculans and L. biglobosa is designed around recombinase polymerase amplification (RPA) with fluorescent probe as the signal indicator, which allowed the real-time assay of amplification performed on a portable device between 37 and 42 °C. The time needed to observe the positive reaction results is controlled within 30 min. The proposed assay system is a good choice for on-site disease screening of oilseed rape plant where rapid detection is valuable, including port quarantine, agriculture quality testing, and pathogen spreading control.
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Affiliation(s)
- Rong Lei
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Jun Kong
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Yanhong Qiu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Naizhong Chen
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Shuifang Zhu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China
| | - Xinyi Wang
- College of Sciences, Shenyang Agricultural University, Shenyang 110161, China.
| | - Pinshan Wu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
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An immunological determination of somatostatin in pharmaceutical by sandwich ELISA based on IgY and polyclonal antibody. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Liu L, Li R, Zhang R, Wang J, An Q, Han Q, Wang J, Yuan W. Rapid and sensitive detection of Mycoplasma hyopneumoniae by recombinase polymerase amplification assay. J Microbiol Methods 2019; 159:56-61. [PMID: 30807776 DOI: 10.1016/j.mimet.2019.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 10/27/2022]
Abstract
Mycoplasma hyopneumoniae is the etiological agent of swine enzootic pneumonia, which is associated with high economic losses in swine production worldwide. In this study, recombinase polymerase amplification assays using real-time fluorescence detection (real-time RPA) and lateral flow strip detection (LFS RPA) were developed to detect M. hyopneumoniae based on the conserved region of the mhp165 gene. Real-time RPA was performed in Genie III at 39 °C for 20 min, while the LFS RPA was performed in an incubator block at 39 °C for 15 min, and the products were visible on the LFS inspected by the naked eyes within 2 min. Both assays were specific for M. hyopneumoniae, as there were no cross-reactions with other pathogens tested. The limit of detection of both RPA assay was 5.0 × 102 fg of M. hyopneumoniae DNA, which was the same as that of a real-time PCR assay. Of the 146 clinical samples, M. hyopneumoniae DNA was identified in 41, 42, and 47 samples by the real-time RPA, LFS RPA and real-time PCR, respectively. Compared to real-time PCR, the real-time RPA and LFS RPA assays showed diagnostic specificity of 100%, a diagnostic sensitivity of 87.23% and 89.36%, and a kappa value of 0.903 and 0.909, respectively. These results have demonstrated that the developed RPA assays are suitable for rapid and reliable detection of M. hyopneumoniae in diagnostic laboratory and at point-of-need facility.
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Affiliation(s)
- Libing Liu
- Center of Inspection and Quarantine Technology, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Ruiwen Li
- College of Veterinary Medicine, Agricultural University of Hebei, Baoding 071001, China
| | - Ruoxi Zhang
- Hebei Animal Disease Control Center, Shijiazhuang 050050, China
| | - Jinfeng Wang
- Center of Inspection and Quarantine Technology, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Qi An
- College of Veterinary Medicine, Agricultural University of Hebei, Baoding 071001, China
| | - Qingan Han
- Hebei Animal Disease Control Center, Shijiazhuang 050050, China
| | - Jianchang Wang
- Center of Inspection and Quarantine Technology, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China.
| | - Wanzhe Yuan
- College of Veterinary Medicine, Agricultural University of Hebei, Baoding 071001, China.
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Li J, Macdonald J, von Stetten F. Review: a comprehensive summary of a decade development of the recombinase polymerase amplification. Analyst 2019; 144:31-67. [DOI: 10.1039/c8an01621f] [Citation(s) in RCA: 240] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
RPA is a versatile complement or replacement of PCR, and now is stepping into practice.
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Affiliation(s)
- Jia Li
- Laboratory for MEMS Applications
- IMTEK – Department of Microsystems Engineering
- University of Freiburg
- 79110 Freiburg
- Germany
| | - Joanne Macdonald
- Inflammation and Healing Research Cluster
- Genecology Research Centre
- School of Science and Engineering
- University of the Sunshine Coast
- Australia
| | - Felix von Stetten
- Laboratory for MEMS Applications
- IMTEK – Department of Microsystems Engineering
- University of Freiburg
- 79110 Freiburg
- Germany
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Ma L, Zeng F, Cong F, Huang B, Zhu Y, Wu M, Xu F, Yuan W, Huang R, Guo P. Development and evaluation of a broadly reactive reverse transcription recombinase polymerase amplification assay for rapid detection of murine norovirus. BMC Vet Res 2018; 14:399. [PMID: 30547776 PMCID: PMC6295035 DOI: 10.1186/s12917-018-1736-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 12/05/2018] [Indexed: 11/10/2022] Open
Abstract
Background Murine norovirus (MNV) is recognized as the most prevalent viral pathogen in captive mouse colonies. The rapid detection assay for MNV would be a useful tool for monitoring and preventing MNV infection. A recombinase polymerase amplification (RPA) assay was established in this study to provide a solution for rapid and sensitive detection of MNV. Results The detection limit of the RT-RPA assay for the detection of MNV was 1 × 102 copies of RNA molecules per reaction. The assay was specific since there was no cross-reaction with other common murine viruses. In addition, the broad reactivity of the RT-RPA assay was validated using the synthesized template carrying seven point mutations among several MNV strains. The MNV RT-RPA assay could detect as few as 1 × 102 copies of the mutant per reaction, suggesting the assay could be broadly reactive against a large diversity of MNV strains. Forty eight clinical samples including 16 gastric tissue specimens, 16 cecal tissue specimens and 16 fecal specimens were tested for the validation of the new developed RT-RPA assay. The detection results of RT-RPA and RT-qPCR for clinical samples were very similar, except that a gastric tissue sample which was positive by RT-qPCR, with a RNA titer of 27 copies, was negative by RT-RPA. Conclusions A broadly reactive RT-RPA assay was successfully established for MNV detection.
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Affiliation(s)
- Lei Ma
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fanwen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510640, China
| | - Feng Cong
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Bihong Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Yujun Zhu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Miaoli Wu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Fengjiao Xu
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Wen Yuan
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Ren Huang
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China
| | - Pengju Guo
- Guangdong Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou, China.
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Development of real-time reverse transcription recombinase polymerase amplification (RPA) for rapid detection of peste des petits ruminants virus in clinical samples and its comparison with real-time PCR test. Sci Rep 2018; 8:17760. [PMID: 30531986 PMCID: PMC6288080 DOI: 10.1038/s41598-018-35636-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 10/18/2018] [Indexed: 12/20/2022] Open
Abstract
Peste des petits ruminants (PPR), caused by small ruminant morbillivirus (SRMV), formerly called peste des petits ruminants virus (PPRV), is one of the most important pathogens in small ruminants, and has tremendous negative economic impact on the sheep industry worldwide. Current detection of PPRV in clinical samples mainly relies on real-time RT-PCR. Particularly, samples collected from rural area require highly equipped laboratories for screening. A rapid, real-time reverse-transcription recombinase polymerase amplification assay (RT-RPA), employing primers and exo probe, was thus developed to perform at 42 °C for 20 min, and the detection limit at 95% probability was 14.98 copies per reaction and 0.326 TCID50/mL based on plasmid copy number and tissue culture infectivity titre. All the four lineages of PPRV could be detected with no cross-reaction to other pathogens including measles virus (MeV), goatpox virus (GTPV), canine distemper virus (CDV), foot-and-mouth disease virus (FMDV) and Mycoplasma capricolum subsp. capripneumoniae (Mccp). The performance of real-time RT-RPA assay was validated by testing 138 field samples and compared to real-time RT-PCR. The results indicated an excellent diagnostic agreement between real-time RT-RPA and a reference real-time RT-PCR method with the kappa value of 0.968. Compared to real-time RT-PCR, the sensitivity of real-time RT-RPA was 100%, while the specificity was 97.80%. The developed RT-RPA assay offers a promising platform for simple, rapid, and reliable detection of PPRV, especially in the resource-limited settings.
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Liu L, Wang J, Zhang R, Lin M, Shi R, Han Q, Wang J, Yuan W. Visual and equipment-free reverse transcription recombinase polymerase amplification method for rapid detection of foot-and-mouth disease virus. BMC Vet Res 2018; 14:263. [PMID: 30170587 PMCID: PMC6119248 DOI: 10.1186/s12917-018-1594-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 08/24/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Foot-and-mouth disease (FMD), which is caused by foot-and-mouth disease virus (FMDV), is a highly contagious tansboundary disease of cloven-hoofed animals and causes devastating economic damages. Accurate, rapid and simple detection of FMDV is critical to containing an FMD outbreak. Recombinase polymerase amplification (RPA) has been explored for detection of diverse pathogens because of its accuracy, rapidness and simplicity. A visible and equipment-free reverse-transcription recombinase polymerase amplification assay combined with lateral flow strip (LFS RT-RPA) was developed to detect the FMDV using primers and LF probe specific for the 3D gene. RESULTS The FMDV LFS RT-RPA assay was performed successfully in a closed fist using body heat for 15 min, and the products were visible on the LFS inspected by the naked eyes within 2 min. The assay could detect FMDV serotypes O, A and Asia1, and there were no cross-reactions with vesicular stomatitis virus (VSV), encephalomyocarditis virus (EMCV), classical swine fever virus (CSFV), porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus 2 (PCV2) and pseudorabies virus (PRV). The analytical sensitivity was 1.0 × 102 copies in vitro transcribed FMDV RNA per reaction, which was the same as a real-time RT-PCR. For the 55 samples, FMDV RNA positive rate was 45.5% (25/55) by LFS RT-RPA and 52.7% (29/55) by real-time RT-PCR. For the LFS RT-RPA assay, the positive and negative predicative values were 100% and 80%, respectively. CONCLUSIONS The performance of the LFS RT-RPA assay was comparable to real-time RT-PCR, while the LFS RT-RPA assay was much faster and easier to be performed. The developed FMDV LFS RT-RPA assay provides an attractive and promising tool for rapid and reliable detection of FMDV in under-equipped laboratory and at point-of-need facility, which is of great significance in FMD control in low resource settings.
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Affiliation(s)
- Libing Liu
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, People's Republic of China
| | - Jinfeng Wang
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, People's Republic of China
| | - Ruoxi Zhang
- Hebei Animal Disease Control Center, Shijiazhuang, 050050, People's Republic of China
| | - Mi Lin
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, People's Republic of China
| | - Ruihan Shi
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, People's Republic of China.,Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang, 050051, People's Republic of China
| | - Qingan Han
- Hebei Animal Disease Control Center, Shijiazhuang, 050050, People's Republic of China
| | - Jianchang Wang
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang, 050051, People's Republic of China. .,Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang, 050051, People's Republic of China.
| | - Wanzhe Yuan
- College of Veterinary Medicine, Agricultural University of Hebei, No.38 Lingyusi Street, Baoding, Hebei, 071001, People's Republic of China.
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Evaluation of an incubation instrument-free reverse transcription recombinase polymerase amplification assay for rapid and point-of-need detection of canine distemper virus. J Virol Methods 2018; 260:56-61. [PMID: 30009850 PMCID: PMC7113680 DOI: 10.1016/j.jviromet.2018.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 01/20/2023]
Abstract
Visual, rapid molecular assay for detection of CDV was developed. Assay is based on RT-RPA and use of a lateral flow strip to visualize product. Assay was performed in closed fists using body heat for 15 min. Assay analytical sensitivity and specificity was similar to a real-time RT-PCR. Assay was demonstrated to be simple, convenient, rapid and reliable for detection of CDV.
Canine distemper, caused by Canine distemper virus (CDV), is a highly contagious and fatal systemic disease in free-living and captive carnivores worldwide. Accurate, rapid and simple detection of CDV is critical to improve disease management and prevent outbreaks. In this study, a visible and incubation instrument-free reverse-transcription recombinase polymerase amplification assay combined with lateral flow strip (LFS RT-RPA) was developed to detect CDV using primers and lateral flow (LF) probe specific for the nucleocapsid (N) protein gene. The CDV LFS RT-RPA assay was performed in a closed fist using body heat for 15 min, and the products were visible to the naked eyes on the LFS within 5 min. The assay could detect CDV, and there was no cross-reaction with the other viruses tested. Using the in vitro transcribed CDV RNA as template, the analytical sensitivity was 9.4 × 101 copies per reaction, which was the same result as that of a real-time RT-PCR. The assay performance was further evaluated by testing 32 nasal/oropharyngeal swab samples, and CDV RNA positive rate was 62.0% (20/32) by LFS RT-RPA, which was the same result as that of the real-time RT-PCR assay. The performance of the LFS RT-RPA was comparable to real-time RT-PCR, while the LFS RT-RPA assay was much faster and easier to perform. The novel CDV LFS RT-RPA assay provides an attractive and promising tool for rapid and reliable detection of CDV in the underequipped laboratory and point-of-need facility, which is of great significance in CD control in low resource settings.
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Liu Y, Wang XY, Wei XM, Gao ZT, Han JP. Rapid Authentication of Ginkgo biloba Herbal Products Using the Recombinase Polymerase Amplification Assay. Sci Rep 2018; 8:8002. [PMID: 29789688 PMCID: PMC5964079 DOI: 10.1038/s41598-018-26402-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/14/2018] [Indexed: 12/27/2022] Open
Abstract
Species adulteration in herbal products (HPs) exposes consumers to health risks. Chemical and morphological methods have their own deficiencies when dealing with the detection of species containing the same active compounds in HPs. In this study, we developed a rapid identification method using the recombinase polymerase amplification (RPA) assay to detect two species, Ginkgo biloba and Sophora japonica (as adulteration), in Ginkgo biloba HPs. Among 36 Ginkgo biloba HP samples, 34 were found to have Ginkgo biloba sequences, and 9 were found to have Sophora japonica sequences. During the authentication process, the RPA-LFS assay showed a higher specificity, sensitivity and efficiency than PCR-based methods. We initially applied the RPA-LSF technique to detect plant species in HPs, demonstrating that this assay can be developed into an efficient tool for the rapid on-site authentication of plant species in Ginkgo biloba HPs.
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Affiliation(s)
- Yang Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Xiao-Yue Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Xue-Min Wei
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Zi-Tong Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Jian-Ping Han
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
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Liu L, Wang J, Geng Y, Wang J, Li R, Shi R, Yuan W. Equipment-free recombinase polymerase amplification assay using body heat for visual and rapid point-of-need detection of canine parvovirus 2. Mol Cell Probes 2018; 39:41-46. [PMID: 29705183 PMCID: PMC7127419 DOI: 10.1016/j.mcp.2018.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/17/2018] [Accepted: 04/25/2018] [Indexed: 12/20/2022]
Abstract
A visible and equipment-free recombinase polymerase amplification assay combined with a lateral flow strip (LFS RPA) was developed to detect canine parvovirus type 2 (CPV-2), which is the etiological agent of canine parvovirus disease. The CPV-2 LFS RPA assay was developed based on the VP2 gene and is performed in a closed fist using body heat for 15 min; the products are visible to the naked eye on the LFS within 5 min. The assay could detect CPV-2a, CPV-2b and CPV-2c, and there was no cross-reaction with the other viruses tested. Using the standard CPV-2 DNA as a template, the analytical sensitivity was 1.0 × 102 copies per reaction, which was the same result as that of a real-time PCR. The assay performance was further evaluated by testing 60 canine fecal samples, and CPV-2 DNA was detected in 46 samples (76.7%, 46/60) by LFS RPA, which was the same result as that of the real-time PCR assay and higher than that of the SNAP method (48.3%, 29/60). The novel CPV-2 LFS RPA assay is an attractive and promising tool for rapid and convenient diagnosis of CPV disease, especially cage side and in underequipped laboratories. Visual and rapid molecular assay for detection of CPV-2 was developed. Assay was based on recombinase polymerase amplification and use of lateral flow strip to visualize product. Assay was incubated successfully in a closed fist using body heat. Assay showed high sensitivity and specificity for detection of CPV-2.
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Affiliation(s)
- Libing Liu
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Jianchang Wang
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Yunyun Geng
- College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
| | - Jinfeng Wang
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Ruiwen Li
- College of Veterinary Medicine, Agricultural University of Hebei, Baoding 071001, China
| | - Ruihan Shi
- Center of Inspection and Quarantine, Hebei Entry-Exit Inspection and Quarantine Bureau, Shijiazhuang 050051, China; Hebei Academy of Science and Technology for Inspection and Quarantine, Shijiazhuang 050051, China
| | - Wanzhe Yuan
- College of Veterinary Medicine, Agricultural University of Hebei, Baoding 071001, China.
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Silva G, Oyekanmi J, Nkere CK, Bömer M, Kumar PL, Seal SE. Rapid detection of potyviruses from crude plant extracts. Anal Biochem 2018; 546:17-22. [PMID: 29378167 PMCID: PMC5873530 DOI: 10.1016/j.ab.2018.01.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/18/2018] [Accepted: 01/21/2018] [Indexed: 11/16/2022]
Abstract
Potyviruses (genus Potyvirus; family Potyviridae) are widely distributed and represent one of the most economically important genera of plant viruses. Therefore, their accurate detection is a key factor in developing efficient control strategies. However, this can sometimes be problematic particularly in plant species containing high amounts of polysaccharides and polyphenols such as yam (Dioscorea spp.). Here, we report the development of a reliable, rapid and cost-effective detection method for the two most important potyviruses infecting yam based on reverse transcription-recombinase polymerase amplification (RT-RPA). The developed method, named 'Direct RT-RPA', detects each target virus directly from plant leaf extracts prepared with a simple and inexpensive extraction method avoiding laborious extraction of high-quality RNA. Direct RT-RPA enables the detection of virus-positive samples in under 30 min at a single low operation temperature (37 °C) without the need for any expensive instrumentation. The Direct RT-RPA tests constitute robust, accurate, sensitive and quick methods for detection of potyviruses from recalcitrant plant species. The minimal sample preparation requirements and the possibility of storing RPA reagents without cold chain storage, allow Direct RT-RPA to be adopted in minimally equipped laboratories and with potential use in plant clinic laboratories and seed certification facilities worldwide.
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Affiliation(s)
- Gonçalo Silva
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK.
| | - Joshua Oyekanmi
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria
| | - Chukwuemeka K Nkere
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria; National Root Crops Research Institute, Km 8 Ikot Ekpene Road, PMB 7006, Umudike, Nigeria
| | - Moritz Bömer
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK
| | - P Lava Kumar
- International Institute of Tropical Agriculture (IITA), Oyo Road, PMB 5320, Ibadan, Nigeria
| | - Susan E Seal
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent, ME4 4TB, UK
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Zhang Y, Wang J, Zhang Z, Mei L, Wang J, Wu S, Lin X. Development of recombinase polymerase amplification assays for the rapid detection of peste des petits ruminants virus. J Virol Methods 2018; 254:35-39. [DOI: 10.1016/j.jviromet.2018.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/24/2018] [Accepted: 01/24/2018] [Indexed: 01/17/2023]
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Shahin K, Gustavo Ramirez-Paredes J, Harold G, Lopez-Jimena B, Adams A, Weidmann M. Development of a recombinase polymerase amplification assay for rapid detection of Francisella noatunensis subsp. orientalis. PLoS One 2018; 13:e0192979. [PMID: 29444148 PMCID: PMC5812721 DOI: 10.1371/journal.pone.0192979] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/01/2018] [Indexed: 11/18/2022] Open
Abstract
Francisella noatunensis subsp. orientalis (Fno) is the causative agent of piscine francisellosis in warm water fish including tilapia. The disease induces chronic granulomatous inflammation with high morbidity and can result in high mortality. Early and accurate detection of Fno is crucial to set appropriate outbreak control measures in tilapia farms. Laboratory detection of Fno mainly depends on bacterial culture and molecular techniques. Recombinase polymerase amplification (RPA) is a novel isothermal technology that has been widely used for the molecular diagnosis of various infectious diseases. In this study, a recombinase polymerase amplification (RPA) assay for rapid detection of Fno was developed and validated. The RPA reaction was performed at a constant temperature of 42°C for 20 min. The RPA assay was performed using a quantitative plasmid standard containing a unique Fno gene sequence. Validation of the assay was performed not only by using DNA from Fno, closely related Francisella species and other common bacterial pathogens in tilapia farms, but also by screening 78 Nile tilapia and 5 water samples. All results were compared with those obtained by previously established real-time qPCR. The developed RPA showed high specificity in detection of Fno with no cross-detection of either the closely related Francisella spp. or the other tested bacteria. The Fno-RPA performance was highly comparable to the published qPCR with detection limits at 15 and 11 DNA molecules detected, respectively. The RPA gave quicker results in approximately 6 min in contrast to the qPCR that needed about 90 min to reach the same detection limit, taking only 2.7–3 min to determine Fno in clinical samples. Moreover, RPA was more tolerant to reaction inhibitors than qPCR when tested with field samples. The fast reaction, simplicity, cost-effectiveness, sensitivity and specificity make the RPA an attractive diagnostic tool that will contribute to controlling the infection through prompt on-site detection of Fno.
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Affiliation(s)
- Khalid Shahin
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
- Aquatic Animal Diseases Lab, Division of Aquaculture, National Institute of Oceanography and Fisheries, Suez, Egypt
- * E-mail:
| | - Jose Gustavo Ramirez-Paredes
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Graham Harold
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Benjamin Lopez-Jimena
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Alexandra Adams
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
| | - Manfred Weidmann
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, Scotland, United Kingdom
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Liu F, Li J, Li L, Liu Y, Wu X, Wang Z. Peste des petits ruminants in China since its first outbreak in 2007: A 10-year review. Transbound Emerg Dis 2018; 65:638-648. [PMID: 29322642 DOI: 10.1111/tbed.12808] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Indexed: 11/30/2022]
Abstract
Peste des petits ruminants (PPR) is a highly infectious disease of small ruminants and caused by small ruminant morbillivirus (SRMV), formerly called peste-des-petits-ruminants virus (PPRV). This disease is circulating in Africa (except most countries in southern Africa), the Arabian Peninsula, the Middle East, and Central, East and South-East Asia. Peste des petits ruminants is still regarded as an exotic disease in China, where its first outbreak was reported in the Ngari region of Tibet in 2007, but effectively controlled by slaughter, vaccination and animal movement restriction in PPR-infected areas. However, PPR re-emerged in Xinjiang of China in December 2013, rapidly spread into much of China in the first half of 2014, but since then was substantially inhibited countrywide. Phylogenetic analysis shows that SRMVs from China share the highest homology with others from its neighbouring countries, possibly indicating the transboundary transmission of SRMVs. In 2015, a national eradication program for PPR was issued and has been being implemented in China, expecting to achieve a PPR-eradicating aim countrywide by 2020. Here, we reviewed a 10-year history (2007-2017) of PPR in China, including two major outbreaks, its infection in wild species, development of diagnostics and vaccines, and implementation of the national eradication program.
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Affiliation(s)
- F Liu
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - J Li
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - L Li
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Y Liu
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - X Wu
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
| | - Z Wang
- OIE Reference Laboratory for Peste des Petits Ruminants, National Research Center for Exotic Animal Diseases, China Animal Health and Epidemiology Center, Qingdao, Shandong, China
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Abstract
Recombinase polymerase amplification (RPA) is a highly sensitive and selective isothermal amplification technique, operating at 37-42°C, with minimal sample preparation and capable of amplifying as low as 1-10 DNA target copies in less than 20 min. It has been used to amplify diverse targets, including RNA, miRNA, ssDNA and dsDNA from a wide variety of organisms and samples. An ever increasing number of publications detailing the use of RPA are appearing and amplification has been carried out in solution phase, solid phase as well as in a bridge amplification format. Furthermore, RPA has been successfully integrated with different detection strategies, from end-point lateral flow strips to real-time fluorescent detection amongst others. This review focuses on the different methodologies and advances related to RPA technology, as well as highlighting some of the advantages and drawbacks of the technique.
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Affiliation(s)
- Ivan Magriñá Lobato
- INTERFIBIO Consolidated Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Països Catalans, 26, 43007, Tarragona, Spain
| | - Ciara K O'Sullivan
- INTERFIBIO Consolidated Research Group, Departament d'Enginyeria Química, Universitat Rovira i Virgili, Països Catalans, 26, 43007, Tarragona, Spain.,Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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Lei R, Yan Z, Hu F, Zhu S, Xiong Y, Fan X. Rapid identification of quarantine invasive Solanum elaeagnifoliumby real-time, isothermal recombinase polymerase amplification assay. RSC Adv 2017. [DOI: 10.1039/c7ra10781a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An easy-to-implement strategy to identifySolanum elaeagnifoliumby utilizing recombinase polymerase amplification (RPA) technology was developed.
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Affiliation(s)
- Rong Lei
- Chinese Academy of Inspection and Quarantine
- Beijing
- China
| | - Zhengyue Yan
- Fang Cheng Gang Entry-Exit Inspection and Quarantine Bureau
- China
| | - Fan Hu
- Chinese Academy of Inspection and Quarantine
- Beijing
- China
| | - Shuifang Zhu
- Chinese Academy of Inspection and Quarantine
- Beijing
- China
| | - Yufen Xiong
- Chinese Academy of Inspection and Quarantine
- Beijing
- China
| | - Xiaohong Fan
- Chinese Academy of Inspection and Quarantine
- Beijing
- China
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