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Liu S, Wang Y, Chen J, Wang Q, Chang O, Zeng W, Bergmann SM, Li Y, Yin J, Wen H. Establishment of a cell line from egg of rare minnow Gobiocypris rarus for propagation of grass carp reovirus genotype II. Microb Pathog 2019; 136:103715. [PMID: 31491550 DOI: 10.1016/j.micpath.2019.103715] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/28/2019] [Accepted: 09/02/2019] [Indexed: 12/17/2022]
Abstract
The rare minnow, Gobiocypris rarus, is small experimental fish proven to be sensitive to Grass Carp Reovirus (GCRV) infection. In present study we established a new cell (GrE) from eggs of G. rarus. GrE cells grew well at 28 °C in M199 medium containing 10% fetal bovine serum, and has been subcultured for over 70 passages. Chromosome analysis indicated that 40% of the cells were diploid 2n = 66 while the chromosome number of the fish is 2n = 50. Viral replication in GrE cells was confirmed by transmission electron microscopy, immunofluorescence assays and virus titration experiments. GrE cells and Cyenopharyngodon idellus kidney cells were infected with two GCRV genotypes while the virus copies of GCRV II in GrE peaked at 2.25 × 105 on 12th dpi. In vivo challenge experiments using GCRV I and II isolates at generations 1 and 20 indicated that GCRV II reproduce similar symptoms and histopathological changes of the disease in the rare minnow. These results indicated that GrE is permissive for GCRV genotype II propagation and can be used for pathogenesis studies and vaccine development of the predominant genotype of GCRV.
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Affiliation(s)
- Shixu Liu
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China; College of Fisheries, Tianjin Agricultural University, Tianjin, 300384, China
| | - Yingying Wang
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Jiaming Chen
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Qing Wang
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
| | - Ouqin Chang
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Weiwei Zeng
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Sven M Bergmann
- Institute of Infectology, Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, 17493, Greifswald, Insel Riems, Germany
| | - Yingying Li
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Jiyuan Yin
- Key Lab of Fishery Drug Development, Ministry of Agriculture, Key Lab of Aquatic Animal Immune Technology, Peal River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Hong Wen
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
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