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Wang R, Xu S, Wei E, He P, Zhang Y, Wang Q, Tang X, Shen Z. Recombinase-aided amplification coupled with lateral flow dipstick for efficient and accurate detection of Bombyx mori nucleopolyhedrovirus. Folia Microbiol (Praha) 2024; 69:667-676. [PMID: 37952188 DOI: 10.1007/s12223-023-01102-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 10/29/2023] [Indexed: 11/14/2023]
Abstract
The infection of Bombyx mori nucleopolyhedrovirus (BmNPV) is one of the main causes of economic losses in sericulture. Thus, it is essential to establish rapid and effective method for BmNPV detection. In the present study, we have developed a recombinase-aided amplification (RAA) to amplify the BmNPV genomic DNA at 37 °C within 30 min, and achieved a rapid detection method by coupling with a lateral flow dipstick (LFD). The RAA-LFD method had a satisfactory detection limit of 6 copies/μL of recombinant plasmid pMD19-T-IE1, and BmNPV infection of silkworm can be detected 12 h post-infection. This method was highly specific for BmNPV, and without cross-reactivity to other silkworm pathogens. In contrast to conventional polymerase chain reaction (PCR), the RAA-LFD assay showed higher sensitivity, cost-saving, and especially is apt to on-site detection of BmNPV infection in the sericulture production.
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Affiliation(s)
- Runpeng Wang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Sheng Xu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Erjun Wei
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Ping He
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yiling Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Qiang Wang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Xudong Tang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Zhongyuan Shen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China.
- Institute of Sericulture, Chinese Academy of Agricultural Sciences, Zhenjiang, China.
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Zhang Z, Zhang Z, Wang C, Zhai X, Wang W, Chen X, Zhang T. Detection method for reverse transcription recombinase-aided amplification of avian influenza virus subtypes H5, H7, and H9. BMC Vet Res 2024; 20:203. [PMID: 38755641 PMCID: PMC11097555 DOI: 10.1186/s12917-024-04040-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 04/26/2024] [Indexed: 05/18/2024] Open
Abstract
BACKGROUND Avian influenza virus (AIV) not only causes huge economic losses to the poultry industry, but also threatens human health. Reverse transcription recombinase-aided amplification (RT-RAA) is a novel isothermal nucleic acid amplification technology. This study aimed to improve the detection efficiency of H5, H7, and H9 subtypes of AIV and detect the disease in time. This study established RT-RAA-LFD and real-time fluorescence RT-RAA (RF-RT-RAA) detection methods, which combined RT-RAA with lateral flow dipstick (LFD) and exo probe respectively, while primers and probes were designed based on the reaction principle of RT-RAA. RESULTS The results showed that RT-RAA-LFD could specifically amplify H5, H7, and H9 subtypes of AIV at 37 °C, 18 min, 39 °C, 20 min, and 38 °C, 18 min, respectively. The sensitivity of all three subtypes for RT-RAA-LFD was 102 copies/µL, which was 10 ∼100 times higher than that of reverse transcription polymerase chain reaction (RT-PCR) agarose electrophoresis method. RF-RT-RAA could specifically amplify H5, H7, and H9 subtypes of AIV at 40 °C, 20 min, 38 °C, 16 min, and 39 °C, 17 min, respectively. The sensitivity of all three subtypes for RF-RT-RAA was 101 copies/µL, which was consistent with the results of real-time fluorescence quantification RT-PCR, and 100 ∼1000 times higher than that of RT-PCR-agarose electrophoresis method. The total coincidence rate of the two methods and RT-PCR-agarose electrophoresis in the detection of clinical samples was higher than 95%. CONCLUSIONS RT-RAA-LFD and RF-RT-RAA were successfully established in this experiment, with quick response, simple operation, strong specificity, high sensitivity, good repeatability, and stability. They are suitable for the early and rapid diagnosis of Avian influenza and they have positive significance for the prevention, control of the disease, and public health safety.
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Affiliation(s)
- Zongshu Zhang
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Zichuang Zhang
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Chunguang Wang
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Xianghe Zhai
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Wenjing Wang
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Xi Chen
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Tie Zhang
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China.
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Xu S, Man Y, Xu X, Ji J, Wang Y, Yao L, Xie Q, Bi Y. The Development of a Multienzyme Isothermal Rapid Amplification Assay to Visually Detect Duck Hepatitis B Virus. Vet Sci 2024; 11:191. [PMID: 38787163 PMCID: PMC11126061 DOI: 10.3390/vetsci11050191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/25/2024] Open
Abstract
Duck hepatitis B virus (DHBV) is widely prevalent in global ducks and has been identified in Chinese geese with a high prevalence; the available detection techniques are time-consuming and require sophisticated equipment. In this study, an assay combining multienzyme isothermal rapid amplification (MIRA) and lateral flow dipstick (LFD) was developed for the efficient and rapid detection of DHBV. The primary reaction condition of the MIRA assay for DHBV detection was 10 min at 38 °C without a temperature cycler. Combined with the LFD assay, the complete procedure of the newly developed MIRA assay for DHBV detection required only 15 min, which is about one-fourth of the reaction time for routine polymerase chain reaction assay. And electrophoresis and gel imaging equipment were not required for detection and to read the results. Furthermore, the detection limit of MIRA was 45.6 copies per reaction, which is approximately 10 times lower than that of a routine polymerase chain reaction assay. The primer set and probe had much simpler designs than loop-mediated isothermal amplification, and they were only specific to DHBV, with no cross-reactivity with duck hepatitis A virus subtype 1 and duck hepatitis A virus subtype 3, goose parvovirus, duck enteritis virus, duck circovirus, or Riemerella anatipestifer. In this study, we offer a simple, fast, and accurate assay method to identify DHBV in clinical serum samples of ducks and geese, which would be suitable for widespread application in field clinics.
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Affiliation(s)
- Shuqi Xu
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Yuanzhuo Man
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Xin Xu
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Jun Ji
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Yan Wang
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Lunguang Yao
- Henan Provincial Engineering Laboratory of Insects Bioreactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, China; (S.X.); (Y.M.); (X.X.); (Y.W.); (L.Y.)
| | - Qingmei Xie
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (Q.X.); (Y.B.)
| | - Yingzuo Bi
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (Q.X.); (Y.B.)
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Zhao Y, Zhang T, Zhou C, Guo B, Wang H. Pyrococcus furiosus Argonaute Based Detection Assays for Porcine Deltacoronavirus. ACS Synth Biol 2024; 13:1323-1331. [PMID: 38567812 DOI: 10.1021/acssynbio.4c00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Porcine deltacoronavirus (PDCoV) is a major cause of diarrhea and diarrhea-related deaths among piglets and results in massive losses to the overall porcine industry. The clinical manifestations of porcine diarrhea brought on by the porcine epidemic diarrhea virus (PEDV), porcine transmissible gastroenteritis virus (TGEV), and PDCoV are oddly similar to each other. Hence, the identification of different pathogens through molecular diagnosis and serological techniques is crucial. Three novel detection methods for identifying PDCoV have been developed utilizing recombinase-aided amplification (RAA) or reverse transcription recombinase-aided amplification (RT-RAA) in conjunction with Pyrococcus furiosus Argonaute (PfAgo): RAA-PfAgo, one-pot RT-RAA-PfAgo, and one-pot RT-RAA-PfAgo-LFD. The indicated approaches have a detection limit of around 60 copies/μL of PDCoV and do not cross-react with other viruses including PEDV, TGEV, RVA, PRV, PCV2, or PCV3. The applicability of one-pot RT-RAA-PfAgo and one-pot RT-RAA-PfAgo-LFD were examined using clinical samples and showed a positive rate comparable to the qPCR method. These techniques offer cutting-edge technical assistance for identifying, stopping, and managing PDCoV.
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Affiliation(s)
- Yu Zhao
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Tiejun Zhang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Changyu Zhou
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Boyan Guo
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Hongning Wang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
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Ma YH, Liu Y, Li T, Xu ZQ, Chai JJ, Liu A, Ma QH, Gao LJ, Li MC. An experimental study on the visual identification of Fritillaria ussuriensis based on LAMP and nucleic acid colloidal gold technique. Anal Biochem 2024; 687:115430. [PMID: 38147947 DOI: 10.1016/j.ab.2023.115430] [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: 11/26/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/28/2023]
Abstract
Fritillaria ussuriensis Maxim is one of the traditional Chinese valuable herbs, which is the dried bulb of Fritillaria, a plant of the lily family. The identification of authenticity about F. ussuriensis is still technically challenging. In this study, visual identification was performed by ring-mediated isothermal amplification and nucleic acid colloidal gold techniques. Firstly, multiple sequence comparative analysis was performed by DNAMAN to find the differential sites of F. ussuriensis and its mixed pseudo-products, and the specific identification primers of F. ussuriensis were designed. Genomic DNA was extracted by the modified CTAB method, and the reaction system and reaction conditions were optimized to construct LAMP for the visual detection of F. ussuriensis, meanwhile, the genuine product was cloned and the extracted plasmid was sequenced. The specificity and sensitivity were detected, and also verified by nucleic acid colloidal gold method, and 20 commercially available samples were tested. The extracted DNA met the requirements of the experiment, and the genuine F. ussuriensis PCR product titrated on a test strip showed two bands on the T and C lines, while the counterfeit and negative control showed only one band on the C line, which matched the LAMP results. The specificity was 100 %, and the sensitivity of LAMP assay was up to 0.01 ng μL-1, while that of colloidal gold assay was 0.1 ng μL-1, thus the LAMP assay had high sensitivity. 14 out of 20 commercially available samples of F. ussuriensis were qualified, and 6 were unqualified, and the results of the two methods of identification were consistent. In this study, the combined detection method of LAMP and colloidal gold for nucleic acid was established to be specific, rapid, precise and visualized, which can provide a new technical idea for the detection of F. ussuriensis.
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Affiliation(s)
- Yu-He Ma
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Yue Liu
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Tao Li
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Zi-Qiang Xu
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Jin-Jun Chai
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Ang Liu
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Qiu-He Ma
- School of Medical Technology, Beihua University, Jilin, 132013, China
| | - Li-Jun Gao
- School of Medical Technology, Beihua University, Jilin, 132013, China.
| | - Ming-Cheng Li
- School of Medical Technology, Beihua University, Jilin, 132013, China; Innovation Center for Detection on DNA Fingerprint of Traditional Chinese Medicine, Jilin, 132013, China
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Ngoc LTN, Lee YC. Current Trends in RNA Virus Detection via Nucleic Acid Isothermal Amplification-Based Platforms. BIOSENSORS 2024; 14:97. [PMID: 38392016 PMCID: PMC10886876 DOI: 10.3390/bios14020097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 02/24/2024]
Abstract
Ribonucleic acid (RNA) viruses are one of the major classes of pathogens that cause human diseases. The conventional method to detect RNA viruses is real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR), but it has some limitations. It is expensive and time-consuming, with infrastructure and trained personnel requirements. Its high throughput requires sophisticated automation and large-scale infrastructure. Isothermal amplification methods have been explored as an alternative to address these challenges. These methods are rapid, user-friendly, low-cost, can be performed in less specialized settings, and are highly accurate for detecting RNA viruses. Microfluidic technology provides an ideal platform for performing virus diagnostic tests, including sample preparation, immunoassays, and nucleic acid-based assays. Among these techniques, nucleic acid isothermal amplification methods have been widely integrated with microfluidic platforms for RNA virus detection owing to their simplicity, sensitivity, selectivity, and short analysis time. This review summarizes some common isothermal amplification methods for RNA viruses. It also describes commercialized devices and kits that use isothermal amplification techniques for SARS-CoV-2 detection. Furthermore, the most recent applications of isothermal amplification-based microfluidic platforms for RNA virus detection are discussed in this article.
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Affiliation(s)
- Le Thi Nhu Ngoc
- Department of Nano Science and Technology Convergence, Gachon University, 1342 Seongnam-Daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
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Cui H, Xu S, Xu X, Ji J, Kan Y, Yao L, Bi Y, Xie Q. Multienzyme isothermal rapid amplification and lateral flow dipstick combination assay for visible detection of chicken chaphamaparvovirus. Poult Sci 2023; 102:103144. [PMID: 37839164 PMCID: PMC10589884 DOI: 10.1016/j.psj.2023.103144] [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: 08/18/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Chicken chaphamaparvovirus (CkChpV) is a newly emerging pathogen that is currently prevalent in chickens with diarrhea symptoms. To diagnose CkChpV more conveniently and rapidly, this study established a multienzyme isothermal rapid amplification (MIRA) assay, with a reaction time of only 15 min and optimal reaction temperature of 38°C. In combination with the lateral flow dipstick assay, the CkChpV-MIRA assay can be completed within 20 min. We revealed that the detection limit of the MIRA assay using standard plasmids as templates was as low as 21.3 copies, and its sensitivity was 100 times higher than that of nested PCR. Moreover, the designed primer set and probe could only detect CkChpV specifically, and there was no cross reaction with avian nephritis virus, rotavirus, chicken parvovirus virus, Newcastle disease virus, and infectious bronchitis virus, which may cause diarrhea. These findings demonstrated that the CkChpV-MIRA assay established in this study is convenient, sensitive, and specific and does not require sophisticated equipment. It is more suitable for the detection of CkChpV in clinical samples.
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Affiliation(s)
- Hao Cui
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China; Chifeng Municipal Hospital, Chifeng, Inner Mongolia 024000, PR China
| | - Shuqi Xu
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China
| | - Xin Xu
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China
| | - Jun Ji
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China.
| | - Yunchao Kan
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China
| | - Lunguang Yao
- Henan Provincial Engineering Laboratory of Insects Bio-reactor, Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, Henan Provincial Engineering and Technology Center of Animal Disease Diagnosis and Integrated Control, Nanyang Normal University, Nanyang 473061, PR China
| | - Yingzuo Bi
- College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Qingmei Xie
- College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
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Pegu SR, Deb R, Das PJ, Sengar GS, Yadav AK, Rajkhowa S, Paul S, Gupta VK. Development of multiplex PCR assay for simultaneous detection of African swine fever, porcine circo and porcine parvo viral infection from clinical samples. Anim Biotechnol 2023; 34:1883-1890. [PMID: 35343866 DOI: 10.1080/10495398.2022.2053698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
A diagnostic method for simultaneously detecting and distinguishing African Swine Fever (ASF), porcine circovirus type 2 (PCV2), and porcine parvovirus (PPV) in clinical specimens is critical for differential diagnosis, monitoring, and control in the field. Three primer pairs were designed and used to create a multiplex PCR assay. In addition, 356 porcine post mortem tissue samples from various parts of India's North Eastern region were tested by the developed multiplex PCR assay to demonstrate its accuracy. Using the designed primers, each of the ASF, PCV2 and PPV target genes was amplified, but no other porcine virus genes were detected. The assay's limit of detection was 102 copies/µl of PCV2, PPV, or ASFV. The detection of PCV2, PPV, and ASF in postmortem tissue samples revealed that they are co-circulating in India's North-Eastern region. The percentage positivity (PP) for PCV2, PPV and ASF single infection were 7.02% (25/356), 3.93% (14/356), and 3.37% (12/356), respectively, while the PP for PCV2& PPV co-infection was 2.80% (10/356), ASF & PCV2 co infection was 1.4% (5/356) and the ASF, PPV& PCV2 co-infection was1.40% (5/356). The results also indicate that the ASF can infect pigs alongside PCV and PPV.
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Affiliation(s)
| | - Rajib Deb
- ICAR-National Research Centre on Pig, Guwahati, Assam
| | | | | | | | | | - Souvik Paul
- ICAR-National Research Centre on Pig, Guwahati, Assam
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Homklinkaew P, Phatthanakunanan S, Jala S, Boonsoongnern A, Lertwatcharasarakul P. Development of a recombinase-aided amplification method combined with lateral flow dipstick assay to detect Porcine circovirus type 2. Vet World 2023; 16:2313-2320. [PMID: 38152256 PMCID: PMC10750741 DOI: 10.14202/vetworld.2023.2313-2320] [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: 07/17/2023] [Accepted: 10/16/2023] [Indexed: 12/29/2023] Open
Abstract
Background and Aim Porcine circovirus type 2 (PCV2) is a pathogenic virus that suppresses the immune system of pigs, impacting their health and causing economic losses. Rapid diagnostic tools for early detection of PCV2 are critical to disease prevention and control. Several molecular techniques have been established for detecting PCV2 but costly equipment and time-consuming methods are unsuitable for field inspection. In this study, we developed a recombinase-aided amplification combined with lateral flow dipstick (RAA-LFD) assay to compare with polymerase chain reaction (PCR) and quantitative PCR (qPCR) in detecting PCV2 in suspected field samples. Materials and Methods To amplify RAA products, 15 primer pairs were designed from the conserved region of the open reading frame (ORF) 1 gene based on multiple alignments of eight PCV2 genotypes. The most efficient primer pair and conditions for the RAA-LFD assay were tested and selected. Limit of detection, repeatability, and reproducibility were determined using the constructed plasmid. DNA was extracted from positive samples for specificity testing as well as from 100 field samples to compare the detection of the RAA-LFD assay with PCR and qPCR. Results The F1/R1 primer pair was chosen and labeled with fluorescein isothiocyanate at the 5' end of the forward primer and with biotin at the 5' end of the reverse primer. The limit of detection of the RAA-LFD assay was 10 copies/μL at 38°C for 30 min. The RAA-LFD assay was repeatable and reproducible, with no cross-reaction with PCV3, Actinobacillus pleuropneumoniae, Porcine epidemic diarrhea virus, Classical swine fever virus, Porcine reproductive and respiratory syndrome virus - North America strain (PRRSV-US) and Porcine reproductive and respiratory syndrome virus - European strain (PRRSV-EU). Based on testing with 100 samples, the developed RAA showed 100% specificity and 90.56% and 85.71% sensitivity when compared to PCR and qPCR, respectively Cohen's kappa coefficients showed a good agreement with the established techniques. Conclusion The RAA-LFD assay targeting the ORF1 gene was highly sensitive, specific, quick, and simple to perform in the field.
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Affiliation(s)
- Ploypassorn Homklinkaew
- Animal Health and Biomedical Sciences Study Program, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand
| | - Sakuna Phatthanakunanan
- Kamphaeng Saen Veterinary Diagnostic Center, Faculty of Veterinary Medicine, Kasetsart University, Nakorn Pathom 73140, Thailand
| | - Siriluk Jala
- Kamphaeng Saen Veterinary Diagnostic Center, Faculty of Veterinary Medicine, Kasetsart University, Nakorn Pathom 73140, Thailand
| | - Alongkot Boonsoongnern
- Department of Farm Resources and Production Medicine, Faculty of Veterinary Medicine, Kasetsart University, Nakorn Pathom 73140, Thailand
| | - Preeda Lertwatcharasarakul
- Department of Pathology, Faculty of Veterinary Medicine, Kasetsart University, Nakorn Pathom 73140, Thailand
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Xia W, Chen Y, Ding X, Liu X, Lu H, Guo C, Zhang H, Wu Z, Huang J, Fan Z, Yu S, Sun H, Zhu S, Wu Z. Rapid and Visual Detection of Type 2 Porcine Reproductive and Respiratory Syndrome Virus by Real-Time Fluorescence-Based Reverse Transcription Recombinase-Aided Amplification. Viruses 2022; 14:v14112526. [PMID: 36423135 PMCID: PMC9699348 DOI: 10.3390/v14112526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is one of the most important diseases that has brought significant economic losses to the swine industry worldwide. Rapid and accurate PRRS virus (PRRSV) detection is one of the key factors for PRRS prevention and control. This study developed a real-time fluorescence-based reverse transcription recombinase-aided amplification (RF-RT-RAA) method for type 2 PRRSV (PRRSV-2) detection. The RF-RT-RAA assay could be performed at 42 °C for 20 min with the optimal primers and a probe. RF-RT-RAA results could be monitored using real-time fluorescence read-out or visually observed with the naked eye using a portable blue light transilluminator. The method had a strong specificity; no cross-reaction was identified with the detected common swine viruses. Moreover, the technique yielded high sensitivity with the lowest detection limit of 101 copies/μL and exhibited good repeatability and reproductively with the coefficients of variation (CV) less than 10%. Eighty-seven clinical samples were tested using RF-RT-RAA and a commercial PRRSV-2 RT-qPCR detection kit. The coincidence rate was 100% between RF-RT-RAA (real-time fluorescence read-out) and RT-qPCR, and 97.7% between RF-RT-RAA (visually observed) and RT-qPCR. The RF-RT-RAA assay provides a new method for rapid and visual detection of PRRSV-2.
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Affiliation(s)
- Wenlong Xia
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
- Correspondence: (W.X.); (Z.W.)
| | - Yao Chen
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xue Ding
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Xiaoming Liu
- College of Veterinary Medicine, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Huipeng Lu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Changming Guo
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Hua Zhang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
- Jiangsu Province Engineering Research Center of Tumor Targeted Nano Diagnostic and Therapeutic Materials, Yancheng Teachers University, Yancheng 224007, China
| | - Zhijun Wu
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, China
- Jiangsu Province Engineering Research Center of Tumor Targeted Nano Diagnostic and Therapeutic Materials, Yancheng Teachers University, Yancheng 224007, China
| | - Jing Huang
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Zhongjun Fan
- Jiangsu Key Laboratory for Bioresources of Saline Soils, School of Ocean and Biological Engineering, Yancheng Teachers University, Yancheng 224007, China
| | - Shupei Yu
- Yancheng Animal Husbandry and Veterinary Station, Yancheng 224001, China
| | - Huaichang Sun
- College of Veterinary Medicine, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Shanyuan Zhu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
| | - Zhi Wu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China
- Correspondence: (W.X.); (Z.W.)
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11
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Wu X, Kong J, Yao Z, Sun H, Liu Y, Wu Z, Liu J, Zhang H, Huang H, Wang J, Chen M, Zeng Y, Huang Y, Chen F, Xie Q, Zhang X. A new rapid and sensitive method for detecting chicken infectious anemia virus. Front Microbiol 2022; 13:994651. [PMID: 36246275 PMCID: PMC9558101 DOI: 10.3389/fmicb.2022.994651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/26/2022] [Indexed: 12/03/2022] Open
Abstract
Since the chicken infectious anemia virus (CIAV) was discovered in 1979, which has been reported as an economically significant and immunosuppressive poultry disease in the world. A novel clinical detection method for the prevention and control of CIAV in the poultry sector is urgently needed. Here, we established a real-time recombinase-aided amplification assay (RAA) for CIAV on-site with a rapid, highly sensitive, strongly specific, low-cost, and simple operational molecular diagnosis detection method. The primers and probe were developed using the CIAV VP2 gene sequence, which has a 117-bp specific band. This assay, which could be carried out at 41°C and completed in 30 min without cross-reactivity with other viruses, had the lowest detection limit of 10 copies of CIAV DNA molecules per reaction. Furthermore, the kappa value of this assay was 0.947, the sensitivity was 93.33%, and the specificity was 100% when compared to the real-time quantitative polymerase chain reaction assay (real-time qPCR). These results indicate that using a real-time RAA assay to detect CIAV on-site could be beneficial. In the future, the real-time RAA test may be a regular assay for the prevention and control of CIAV, as well as help the reduction of economic losses in the poultry business.
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Affiliation(s)
- Xiuhong Wu
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Jie Kong
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Ziqi Yao
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Hejing Sun
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Yuanjia Liu
- Department of Veterinary Medicine, College of Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
| | - Zhiqiang Wu
- Wen’s Group Academy, Wen’s Foodstuffs Group Co., Ltd, Yunfu, Xinxing, China
| | - Jiajia Liu
- Wen’s Group Academy, Wen’s Foodstuffs Group Co., Ltd, Yunfu, Xinxing, China
| | - Hao Zhang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Haohua Huang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Jin Wang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Mengjun Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Yichen Zeng
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Yinpeng Huang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Feng Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Qingmei Xie
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
- *Correspondence: Qingmei Xie,
| | - Xinheng Zhang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
- Xinheng Zhang,
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12
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Wu X, Chu F, Zhang L, Chen S, Gao L, Zhang H, Huang H, Wang J, Chen M, Xie Z, Chen F, Zhang X, Xie Q. New rapid detection by using a constant temperature method for avian leukosis viruses. Front Microbiol 2022; 13:968559. [PMID: 36060773 PMCID: PMC9433894 DOI: 10.3389/fmicb.2022.968559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 07/28/2022] [Indexed: 11/17/2022] Open
Abstract
The avian leukemia virus causes avian leukemia (AL), a severe immunosuppressive disease in chickens (ALV). Since the 1990s, the diversity of ALV subpopulations caused by ALV genome variation and recombination, and the complexity of the infection and transmission, with currently no effective commercial vaccine and therapeutic for ALV, has resulted in severe economic losses to the chicken business in various parts of the world. Therefore, as a key means of prevention and control, an effective, rapid, and accurate detection method is imperative. A new real-time reverse transcription recombinase-aided amplification (RT-RAA) assay for ALV with rapid, highly specific, low-cost, and simple operational characteristics have been developed in this study. Based on the amplification of 114 base pairs from the ALV P12 gene, real-time RT-RAA primers and a probe were designed for this study. The lowest detection line was 10 copies of ALV RNA molecules per response, which could be carried out at 39°C in as fastest as 5 min and completed in 30 min, with no cross-reactivity with Marek's disease virus, avian reticuloendothelial virus, Newcastle disease virus, infectious bronchitis virus, infectious bursal disease virus, infectious laryngotracheitis virus, and avian influenza virus. Furthermore, the kappa value of 0.91 (>0.81) was compared with reverse transcription–polymerase chain reaction (RT-PCR) for 44 clinical samples, and the coefficients of variation were within 5.18% of the repeated assays with three low-level concentration gradients. These results indicate that using a real-time RT-RAA assay to detect ALV could be a valuable method.
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Affiliation(s)
- Xiuhong Wu
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Fengsheng Chu
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Luxuan Zhang
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, China
| | - Sheng Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Liguo Gao
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Hao Zhang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Haohua Huang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Jin Wang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Mengjun Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
| | - Zi Xie
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Feng Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
| | - Xinheng Zhang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
- *Correspondence: Xinheng Zhang
| | - Qingmei Xie
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology and Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou, China
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou, China
- Qingmei Xie
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13
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Abstract
INTRODUCTION Recombinase polymerase amplification (RPA) is a promising and emerging technology for rapidly amplifying target nucleic acid from minimally processed samples and through small portable instruments. RPA is suitable for point-of-care testing (POCT) and on-site field testing, and it is compatible with microfluidic devices. Several detection assays have been developed, but limited research has dug deeper into the chemistry of RPA to understand its kinetics and fix its shortcomings. AREAS COVERED This review provides a detailed introduction of RPA molecular mechanism, kits formats, optimization, application, pros, and cons. Moreover, this critical review discusses the nonspecificity issue of RPA, highlights its consequences, and emphasizes the need for more research to resolve it. This review discusses the reaction kinetics of RPA in relation to target length, product quantity, and sensitivity. This critical review also questions the novelty of recombinase-aided amplification (RAA). In short, this review discusses many aspects of RPA technology that have not been discussed previously and provides a deeper insight and new perspectives of the technology. EXPERT OPINION RPA is an excellent choice for pathogen detection, especially in low-resource settings. It has a potential to replace PCR for all purposes, provided its shortcomings are fixed and its reagent accessibility is improved.
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Affiliation(s)
- Mustafa Ahmad Munawar
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Kuopio, Finland
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14
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Guo Y, Wang Y, Fan Z, Zhao X, Bergmann SM, Dong H, Jin Y, Sun D, Mai Q, Liu W, Zeng W. Establishment and evaluation of qPCR and real-time recombinase-aided amplification assays for detection of largemouth bass ranavirus. JOURNAL OF FISH DISEASES 2022; 45:1033-1043. [PMID: 35475515 DOI: 10.1111/jfd.13627] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/10/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Largemouth bass ranavirus disease (LMBVD) caused by largemouth bass ranavirus (LMBV) has resulted in severe economic losses in the largemouth bass (Micropterus salmoides) farming industry in China. Early and accurate diagnosis is the key measure for the prevention and control of LMBVD. In this study, a quantitative polymerase chain reaction (qPCR) and a real-time recombinase-aided amplification (real-time RAA) assay were established for the detection of LMBV. The sensitivity and specificity of these two methods, and the efficacy for detection of LMBV from clinical samples were also evaluated. Results showed that the real-time RAA reaction was completed in <30 min at 39℃ with a detection limit of 58.3 copies, while qPCR reaction required 60 min with a detection limit of 5.8 copies. Both methods were specific for LMBV, where no cross-reactions observed with the other tested fish pathogens. Comparing the amplification results of both assays to the results obtained by virus isolation using 53 clinical tissue samples, results showed that the clinical sensitivity of real-time RAA and qPCR were 93.75% and 100% respectively, and the clinical specificity of both were 100%. Our results showed that qPCR is more suitable for quantitative analysis and accurate detection of LMBV in the laboratory, while real-time RAA is more suitable as a point-of-care diagnostic tool for on-site detection and screening of LMBV under farm conditions and in poorly equipped laboratories.
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Affiliation(s)
- Yanmin Guo
- College of Pharmacy, Heze University, Heze, China
| | - Yahui Wang
- Guangdong Yongshun Biopharmaceutical Co. Ltd., Zhaoqing, China
| | - Zhaobin Fan
- College of Pharmacy, Heze University, Heze, China
| | - Xianlin Zhao
- College of Pharmacy, Heze University, Heze, China
| | - Sven M Bergmann
- Institute of Infectology, Friedrich-Loffler-Institut (FLI), Federal Research Institute for Animal Health, Greifswald-InselRiems, Germany
| | - Hanxu Dong
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yuqi Jin
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Dongli Sun
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Qianyi Mai
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Weiqiang Liu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - Weiwei Zeng
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
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15
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Wu K, Zhang Y, Zeng S, Liu X, Li Y, Li X, Chen W, Li Z, Qin Y, Chen J, Fan S. Development and Application of RAA Nucleic Acid Test Strip Assay and Double RAA Gel Electrophoresis Detection Methods for ASFV and CSFV. Front Mol Biosci 2022; 8:811824. [PMID: 35174210 PMCID: PMC8841470 DOI: 10.3389/fmolb.2021.811824] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/24/2021] [Indexed: 11/13/2022] Open
Abstract
African swine fever (ASF) is an acute, severe and hemorrhagic infectious disease caused by African swine fever virus (ASFV) infecting domestic pigs and wild boars. Since the outbreak of the disease in China in 2018, it has brought a great impact on China’s pig industry. Classical swine fever (CSF) is an acute contact infectious disease of pigs caused by classical swine fever virus (CSFV) infection. Clinically, acute CSF usually shows persistent high fever, anorexia, extensive congestion and bleeding of the skin and mucosa, which are similar to ASF. It is of great significance to prevent, control and accurately detect ASF and CSF in pig farms. In this study, Recombinase aided amplification (RAA) technology combined with a nucleic acid test strip (RAA-strip) was established for simple and specific detection of ASFV/CSFV. The sensitivity and preliminary clinical application results showed that the RAA test strip established in this study could detect recombinant plasmids containing ASFV/CSFV gene fragments as low as 103 copies/µL. The minimum detection limits of virus DNA/cDNA were 10 and 12 pg respectively, and there was no cross-reaction with other porcine viruses. The specificity of the method was good. We used 37–42 clinical samples to evaluate the performance of our established method, and the positive concordance rates with conventional PCR were 94.1 and 57.1%, respectively. In addition, ASFV and CSFV double RAA agarose gel electrophoresis detection methods were established. The results showed that the method had good specificity. The detection limit of this method is 106 copies for ASFV p72 gene recombinant plasmid and 105 copies for CSFV NS5B Gene recombinant plasmid. The use of this method for clinical material detection was consistent with the PCR method. In summary, the developed method of RAA-strip assay for ASFV and CSFV realized the visual detection of pathogens, and the developed method of dual RAA agarose gel electrophoresis assay for ASFV and CSFV realized the simultaneous detection of two pathogens in one reaction, with good specificity, high sensitivity and rapid reaction rate, which was expected to be clinically feasible for the differential diagnosis of ASF and CSF provided technical support.
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Affiliation(s)
- Keke Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yuanyuan Zhang
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Sen Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Xiaodi Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Yuwan Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Xiaowen Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Wenxian Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Zhaoyao Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
| | - Yuwei Qin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
| | - Jinding Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- *Correspondence: Jinding Chen, ; Shuangqi Fan,
| | - Shuangqi Fan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- *Correspondence: Jinding Chen, ; Shuangqi Fan,
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