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Dual transcriptomic analysis of Ostreid herpesvirus 1 infected Scapharca broughtonii with an emphasis on viral anti-apoptosis activities and host oxidative bursts

文献类型： 外文期刊

作者： Bai, Chang-Ming 1 ; Rosani, Umberto; Xin, Lu-Sheng 1 ; Li, Gui-Yang 1 ; Li, Chen 1 ; Wang, Qing-Chen 2 ; Wang, Chon 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Lab Marine Fisheries Sci & Food Prod Proc,Qingdao, Qingdao Natl Lab Marine Sci & Technol,Yellow Sea, Key Lab Maricultural Organism Dis Control,Minist, Qingdao 266071, Peoples R China

2.Chinese Acad Fishery Sci, Lab Marine Fisheries Sci & Food Prod Proc,Qingdao, Qingdao Natl Lab Marine Sci & Technol,Yellow Sea, Key Lab Maricultural Organism Dis Control,Minist, Qingdao

关键词： Scapharca broughtonii; Transcriptome; Immune-related genes; Apoptosis; OsHV-1

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2018 年 82 卷

页码：

收录情况： SCI

摘要： The ark shell, Scapharca (Anadara) broughtonii, is an economically important marine shellfish species in Northwestern Pacific. Mass mortalities of ark shell adults related to Ostreid herpesvirus-1 (OsHV-1) infection have occurred frequently since 2012. However, due to the lack of transcriptomic resource of ark shells, the molecular mechanisms underpinning the virus-host interaction remains largely undetermined. In the present study, we resolved the dual transcriptome changes of OsHV-1 infected ark shell with Illumina sequencing. A total of 44 M sequence reads were generated, of which 67,119 reads were mapped to the OsHV-1 genome. De novo assembly of host reads resulted in 276,997 unigenes. 74,529 (26.90%), 47,653 (17.20%) and 19, 611 (7.07%) unigenes were annotated into GO, KOG and KEGG database, respectively. According to RSEM expression values, we identified 2998 differentially expressed genes (DEGs) between control and challenged groups, which included 2065 up-regulated unigenes and 933 down-regulated unigenes. Further analysis of functional pathways indicated that OsHV-1 could inhibit host cell apoptosis mainly by the up-regulation of inhibitor of apoptosis protein (IAP), and thus facilitating its successful replication. While host hemoglobins could induce oxidative burst by suppressing its peroxidase activity, and thus defense against OsHV-1 infection. Although we reported a narrow expression of the OsHV-1 genome compared to Crassostrea gigas infection, we highlighted several common viral genes highly expressed in the two hosts, suggesting an important functional role. This study offers insights into the pathogenesis mechanisms of OsHV-1 infection in bivalve mollusks of the Arcidae family.

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