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Beta-glucan enhances the response to SVCV infection in zebrafish.

Dev. Comp. Immunol.2018 Jul;84:307-314. Epub 2018 Mar 07
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摘要


The antiviral effects of beta-glucan, an immunostimulatory agent were studied in zebrafish both in vitro and in vivo. Here we show that zebrafish ZF4 cells as well as whole fish primed with yeast β-glucan zymosan exhibited increased cytokine expression and elevated response to spring viremia of carp virus (SVCV) infection. In vitro, previous treatment of β-glucan enhanced ZF4 cell viability against SVCV infection which is associated to the activation of interferon signaling pathway and inflammatory cytokines gene expression. In vivo, the SVCV-infected fish primed with β-glucan had a higher survival rate (≈73%) than the control SVCV-infected group (≈33%). Additionally, up-regulation of the expression of a set of genes involved in innate immune response was detected in zebrafish intraperitoneally injected of β-glucan: il1b, il6, il8, il10 and tnfa transcripts showed increased expression that appear to be rapid (2 days) but not long-lived (less than 2 weeks). The present study is, to our knowledge, the first to combine cell culture and in vivo approaches to describe host response to β-glucan stimulation and viral infection in zebrafish.

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