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题名: IFN Regulatory Factor 10 Is a Negative Regulator of the IFN Responses in Fish
作者: Li, Shun1; Lu, Long-Feng1; Feng, Hong1; Wu, Nan1; Chen, Dan-Dan1; Zhang, Yi-Bing1; Gui, Jian-Fang1; Nie, Pin1; Zhang, Yong-An1
关键词: INNATE IMMUNE-RESPONSE ; INTERFERON ANTIVIRAL RESPONSE ; I INTERFERON ; RIG-I ; ONCORHYNCHUS-MYKISS ; ATLANTIC SALMON ; RAINBOW-TROUT ; FACTOR IRF ; FUNCTIONAL-CHARACTERIZATION ; FEEDBACK-REGULATION
刊名: JOURNAL OF IMMUNOLOGY
发表日期: 2014-08-01
DOI: 10.4049/jimmunol.1400253
卷: 193, 期:3, 页:1100-1109
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Immunology
研究领域[WOS]: Immunology
英文摘要: IFN regulatory factor (IRF) 10 belongs to the IRF family and exists exclusively in birds and fish. Most IRFs have been identified as critical regulators in the IFN responses in both fish and mammals; however, the role of IRF10 is unclear. In this study, we identified IRF10 in zebrafish (Danio rerio) and found that it serves as a negative regulator to balance the innate antiviral immune responses. Zebrafish IRF10 (DrIRF10) was induced by intracellular polyinosinic:polycytidylic acid in ZF4 (zebrafish embryo fibroblast-like) cells. DrIRF10 inhibited the activation of zebrafish IFN1 (DrIFN1) and DrIFN3 promoters in epithelioma papulosum cyprinid cells in the presence or absence of polyinosinic:polycytidylic acid stimulation through direct interaction with the IFN promoters, and this inhibition was also shown to block IFN signaling. Overexpression of DrIRF10 was able to abolish the induction of DrIFN1 and DrIFN3 mediated by the retinoic acid inducible gene I like receptors. In addition, functional domain analysis of DrIRF10 showed that either the DNA binding domain or the IRF association domain is sufficient for its inhibitory activity for IFN signaling. Lastly, overexpression of DrIRF10 decreased the transcription level of several IFN-stimulated genes, resulting in the susceptibility of host cells to spring viremia of carp virus infection. Collectively, these data suggest that DrIRF10 inhibits the expression of DrIFN1 and DrIFN3 to avoid an excessive immune response, a unique regulation mechanism of the IFN responses in lower vertebrates.
关键词[WOS]: INNATE IMMUNE-RESPONSE ; INTERFERON ANTIVIRAL RESPONSE ; I INTERFERON ; RIG-I ; ONCORHYNCHUS-MYKISS ; ATLANTIC SALMON ; RAINBOW-TROUT ; FACTOR IRF ; FUNCTIONAL-CHARACTERIZATION ; FEEDBACK-REGULATION
语种: 英语
WOS记录号: WOS:000339422000016
ISSN号: 0022-1767
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20385
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
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