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Wang H, Zhou S, Wen J, Sun M, Jiang Y, Lu L, Xie J. A real-time reverse-transcription isothermal recombinase polymerase amplification assay for the rapid detection of genotype III grass carp (Ctenopharyngodon idella) reovirus. J Virol Methods 2019; 277:113802. [PMID: 31843672 DOI: 10.1016/j.jviromet.2019.113802] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 11/06/2019] [Accepted: 12/12/2019] [Indexed: 02/04/2023]
Abstract
Grass carp (Ctenopharyngodon idella) hemorrhagic disease, which is characterized by external and internal hemorrhage, is a serious infectious disease affecting grass carp production. Strains of the causative agent, grass carp reovirus (GCRV), are divided into genotypes I, II and III, which are represented by the isolates GCRV-873, GCRV-HZ08 and GCRV-104, respectively. In this study, a real-time reverse-transcription recombinase polymerase amplification (real-time RT-RPA) assay was developed to detect the genotype III grass carp reovirus GCRV-104. The assay was based on the detection of the vp55 gene which encodes the outer fiber protein of the virus. A portable ESE-Quant Tube scanner, with a dimension of 17.4 × 18.8 cm, weighing about 1 kg, and equipped with temperature settings to amplify the DNA isothermally and spectral devices to detect the amplified products using fluorescence, was used to complete the assay. Under the optimal conditions, the assay took approximately 10 min to complete at 37 °C and showed no cross-reactions with other aquatic viruses. Consequently, this rapid real-time RT-RPA assay is a useful method for the simple, rapid and reliable detection of genotype III GCRV strains in resource-limited diagnostic laboratories.
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Affiliation(s)
- Hao Wang
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China.
| | - Shuting Zhou
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China; Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, PR China
| | - Jinxuan Wen
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China
| | - Meng Sun
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China
| | - Yousheng Jiang
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China.
| | - Liqun Lu
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, PR China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture Shanghai Ocean University, Shanghai, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, PR China.
| | - Jing Xie
- Shanghai Engineering Research Center of Aquatic Product Processing & Preservation, Shanghai Ocean University, Shanghai Ocean University, Shanghai, PR China.
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