Establishment of a cell line from egg of rare minnow Gobiocypris rarus for propagation of grass carp reovirus genotype II.

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 Pathog

journal_title

Microbial pathogenesis

authors

Liu S,Wang Y,Chen J,Wang Q,Chang O,Zeng W,Bergmann SM,Li Y,Yin J,Wen H

doi

10.1016/j.micpath.2019.103715

subject

Has Abstract

pub_date

2019-11-01 00:00:00

pages

103715

eissn

0882-4010

issn

1096-1208

pii

S0882-4010(19)30942-8

journal_volume

136

pub_type

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