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SOCS3 Promotes ALV-J Virus Replication via Inhibiting JAK2/STAT3 Phosphorylation During Infection

文献类型： 外文期刊

作者： Mo, Guodong 1 ; Fu, Huali 1 ; Hu, Bowen 1 ; Zhang, Qihong 1 ; Xian, Mingjian 1 ; Zhang, Zihao 1 ; Lin, Ling 1 ; Shi, Meiq 1 ;

作者机构： 1.South China Agr Univ, Coll Anim Sci, Dept Anim Genet Breeding & Reprod, Guangzhou, Peoples R China

2.Minist Agr & Rural Affairs, Guangdong Prov Key Lab AgroAnim Genom & Mol Breed, Guangzhou, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Chicken Genet Breeding & Reprod, Guangzhou, Peoples R China

4.Univ Maryland, Div Immunol, Virginia Maryland Reg Coll Vet Med, College Pk, MD 20742 USA

关键词： ALV-J; chicken; immune; JAK2; STAT3; SOCS3

期刊名称：FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY （ 影响因子：5.293； 五年影响因子：5.882 ）

ISSN： 2235-2988

年卷期： 2021 年 11 卷

页码：

收录情况： SCI

摘要： Avian leukosis virus subgroup J (ALV-J) is an oncogenic retrovirus that causes immunosuppression and neoplastic diseases in poultry. Cytokine signal-transduction inhibitor molecule 3 (SOCS3) is an important negative regulator of the JAK2/STAT3 signaling pathway and plays certain roles in ALV-J infection. It is of significance to confirm the roles of SOCS3 in ALV-J infection and study how this gene affects ALV-J infection. In this study, we assessed the expression of the SOCS3 gene in vivo and in vitro, and investigated the roles of SOCS3 in ALV-J infection using overexpressed or interfered assays with the SOCS3 in DF-1 cells. The results showed that the SOCS3 expression of ALV-J infected chickens was different from uninfected chickens in the spleen, thymus and cecal tonsil. Further, SOCS3 is mainly expressed in the nucleus as determined by immunofluorescence assay. Overexpression of SOCS3 in DF-1 cells promoted the replication of ALV-J virus, and the expression of interferons (IFN alpha and INF beta), inflammatory factors (IL-6 and TNF alpha) along with interferon-stimulating genes (CH25H, MX1, OASL, and ZAP). Conversely, interference of SOCS3 showed the opposite results. We also observed that SOCS3 promoted ALV-J virus replication by inhibiting JAK2/STAT3 phosphorylation. In conclusion, SOCS3 promotes ALV-J replication via inhibiting the phosphorylation of the JAK2/STAT3 signaling pathway. These results would advance further understanding of the persistent infection and the viral immune evasion of the ALV-J virus.

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