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Inhibition of avian tumor virus replication by CCCH-type zinc finger antiviral protein.


ABSTRACT: CCCH type zinc finger antiviral protein (ZAP) is a host restriction factor that inhibits the replication of a variety of viruses in mammals. However, little is known about its antiviral activity on avian tumor virus. Avian leukosis virus subgroup J (ALV-J), an oncogenic retrovirus, induces myelocytomas and various other tumors in meat and egg type chickens. Here, we identified a chicken ZAP (chZAP) that increased at early stage, and subsequently decreased after infection of ALV-J in DF-1 cells, indicating the inducible feature of the endogenous chZAP. To demonstrate the inhibitory effect on ALV-J replication by chZAP, we expressed exogenous chZAP by lentivirus based vectors in DF-1 cells that infected by ALV-J. The result showed that overexpression of chZAP significantly inhibited ALV-J replication at both mRNA level and protein level. Consequently, knockdown of endogenous chZAP by RNAi facilitated ALV-J replication in DF-1 cells. Further, we demonstrated that chZAP interacts with SU protein (encode by gp85 gene) of ALV-J in cytoplasm. Taken together, our results demonstrated that chZAP inhibits ALV-J by both mRNA and protein pathway and it may shed light on a novel antiviral approach in poultry.

SUBMITTER: Zhu M 

PROVIDER: S-EPMC5601699 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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Inhibition of avian tumor virus replication by CCCH-type zinc finger antiviral protein.

Zhu Mingjun M   Ma Xiaoqian X   Cui Xiyao X   Zhou Jing J   Li Chengui C   Huang Libo L   Shang Yingli Y   Cheng Ziqiang Z  

Oncotarget 20170719 35


CCCH type zinc finger antiviral protein (ZAP) is a host restriction factor that inhibits the replication of a variety of viruses in mammals. However, little is known about its antiviral activity on avian tumor virus. Avian leukosis virus subgroup J (ALV-J), an oncogenic retrovirus, induces myelocytomas and various other tumors in meat and egg type chickens. Here, we identified a chicken ZAP (chZAP) that increased at early stage, and subsequently decreased after infection of ALV-J in DF-1 cells,  ...[more]

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