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.
journal_name
Microb Pathogjournal_title
Microbial pathogenesisauthors
Liu S,Wang Y,Chen J,Wang Q,Chang O,Zeng W,Bergmann SM,Li Y,Yin J,Wen Hdoi
10.1016/j.micpath.2019.103715subject
Has Abstractpub_date
2019-11-01 00:00:00pages
103715eissn
0882-4010issn
1096-1208pii
S0882-4010(19)30942-8journal_volume
136pub_type
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