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First Study on Interferon Regulatory Factor in Sturgeon: Expression Pattern of Interferon Regulatory Factor in Dabry's Sturgeon Acipenser dabryanus

文献类型： 外文期刊

作者： Li, Youshen 1 ; Zhang, Shuhuan 2 ; Luo, Kai 1 ; Xia, Lihai 1 ; Hu, Wei 1 ; Tian, Guangming 1 ; Qi, Zhitao 1 ; Xu, Qiaoqin 1 ;

作者机构： 1.Yangtze Univ, Sch Anim Sci, Jingzhou 434020, Peoples R China

2.Chinese Acad Fishery Sci, Minist Agr China, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat, Wuhan 430223, Hubei, Peoples R China

关键词： Dabry's sturgeon (Acipenser dabryanus);interferon regulatory factors (IRFs);expression

期刊名称：JOURNAL OF INTERFERON AND CYTOKINE RESEARCH （ 影响因子：2.607； 五年影响因子：2.941 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： IRFs ) are crucial regulators in initiating the host innate immune response against pathogen invasions. Dabry's sturgeon ( Acipenser dabryanus ) is particularly a valuable fish species found in the Yangtze River, China for which there is scarce immunological data. In the present study, we investigated the expression profile of sturgeon IRF genes. All adIRFs were composed of 8 exons and 7 introns, except adIRF1 , which possessed 9 exons interrupted by 8 introns. Moreover, the predicted protein sequence has a DNA-binding domain (DBD) sharing high identity with spotted gar ( Lepisosteus oculatus ). Regarding the expression patterns, 5 adIRF genes were found to be constitutively expressed in all tissues examined, and were significantly higher in lymphoid organs (eg, blood, kidney, intestine, and spleen). Following Aeromonas hydrophila infection, the expression of adIRF1 and adIRF3 were upregulated in the spleen and caudal kidney, while both the adIRF5 and adIRF8 genes were downregulated in caudal kidney. In addition, adIRF4 was significantly upregulated at 3?h postinfection by A. hydrophila in the spleen and caudal kidney. These results suggest that adIRF s are related to the immune response to bacterial infection, which will help clarify the function of these IRFs and provide a fundamental basis for protecting the Dabry's sturgeon.

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