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RNA-seq comparative analysis of Peking ducks spleen gene expression 24 h post-infected with duck plague virulent or attenuated virus

机译:鸭瘟强毒或减毒病毒感染后24h北京鸭脾脏基因表达的RNA-seq比较分析

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摘要

Duck plague virus (DPV), a member of alphaherpesvirus sub-family, can cause significant economic losses on duck farms in China. DPV Chinese virulent strain (CHv) is highly pathogenic and could induce massive ducks death. Attenuated DPV vaccines (CHa) have been put into service against duck plague with billions of doses in China each year. Researches on DPV have been development for many years, however, a comprehensive understanding of molecular mechanisms underlying pathogenicity of CHv strain and protection of CHa strain to ducks is still blank. In present study, we performed RNA-seq technology to analyze transcriptome profiling of duck spleens for the first time to identify differentially expressed genes (DEGs) associated with the infection of CHv and CHa at 24 h. Comparison of gene expression with mock ducks revealed 748 DEGs and 484 DEGs after CHv and CHa infection, respectively. Gene pathway analysis of DEGs highlighted valuable biological processes involved in host immune response, cell apoptosis and viral invasion. Genes expressed in those pathways were different in CHv infected duck spleens and CHa vaccinated duck spleens. The results may provide valuable information for us to explore the reasons of pathogenicity caused by CHv strain and protection activated by CHa strain.
机译:鸭瘟病毒(DPV)是α疱疹病毒亚家族的成员,会给中国鸭场造成重大经济损失。 DPV中国强毒株(CHv)具有高致病性,可导致大量鸭子死亡。每年在中国,减毒的DPV疫苗(CHa)已经投入使用,用于抗鸭瘟。 DPV的研究已经发展了很多年,但是,对CHv毒力的致病性和CHa毒力对鸭的保护的分子机制的全面了解仍然空白。在本研究中,我们首次进行了RNA-seq技术分析鸭脾的转录组谱分析,以鉴定与24h时CHv和CHa感染相关的差异表达基因(DEG)。与模拟鸭的基因表达比较表明,CHv和CHa感染后分别有748和484。 DEGs的基因途径分析突出了参与宿主免疫反应,细胞凋亡和病毒侵袭的有价值的生物学过程。在那些感染CHv的鸭脾和接种CHa的鸭脾中,这些途径表达的基因不同。该结果可能为我们探讨CHv株致病性的原因以及CHa株激活的保护提供有价值的信息。

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