alexa Development and characterization of a new tropical marine fish cell line from grouper, Epinephelus coioides susceptible to iridovirus and nodavirus.
Agri and Aquaculture

Agri and Aquaculture

Journal of Marine Science: Research & Development

Author(s): Qin QW, Wu TH, Jia TL, Hegde A, Zhang RQ

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Abstract The development and characterization of a new tropical marine fish cell line (GS), derived from the spleen of orange spotted grouper, Epinephelus coioides is described. The GS cells grow well in Leibovitz's L-15 medium supplemented with 10\% foetal bovine serum, and have been subcultured more than 200 times. The optimal growth temperature was 27 degrees C. The GS cell culture consisted of mostly fibroblastic cells. The modal diploid chromosome number was 48. GS cell cultures showed advanced cytopathic effects after infection with a pathogenic grouper iridovirus (Singapore grouper iridovirus, SGIV) or with a grouper nodavirus (Epinephelus tauvina nervous necrosis virus, ETNNV). Analysis by transmission electron microscopy showed a large number of SGIV and ETNNV particles in the cytoplasm of virus-infected cells, respectively, indicative of high sensitivity to these two viruses. Immunofluorescence microscopy showed that iridovirus-infected GS cells reacted strongly with monoclonal antibody against the grouper iridovirus. It is suggested that the GS cell line has good potential as a diagnostic tool for isolation and propagation of iridovirus and nodavirus. When the GS cells were transfected with pEGFP vector DNA, significant fluorescent signals were observed suggesting that the GS cell line can be used as a useful tool for transgenic and genetic manipulation studies. This article was published in J Virol Methods and referenced in Journal of Marine Science: Research & Development

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