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Growth arrest and DNA damage-inducible 45 ab gene targeted by miR-20b-5p executes the inflammation and apoptosis by regulating MAPK and NF-κB pathways in black rockfish

文献类型： 外文期刊

作者： Gao, Chengbin 1 ; Sun, Peng 4 ; Cai, Xin 1 ; Ma, Le 3 ; Zhu, Ying 1 ; Cao, Min 1 ; Li, Chao 1 ;

作者机构： 1.Qingdao Agr Univ, Sch Marine Sci & Engn, Qingdao 266109, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Shandong, Peoples R China

3.Murdoch Univ, Harry Butler Inst, Ctr Sustainable Aquat Ecosyst, Murdoch, WA 6150, Australia

4.Ctr Ecol Environm Monitoring, Weifang 261111, Shandong, Peoples R China

关键词： Ss _ gadd45ab; Inflammation; Apoptosis; Black rockfish; Regulatory mechanism

期刊名称：AQUACULTURE （ 影响因子：4.5； 五年影响因子：4.6 ）

ISSN： 0044-8486

年卷期： 2024 年 580 卷

页码：

收录情况： SCI

摘要： Growth arrest and DNA damage-inducible 45 alpha, b gene (gadd45ab) is a key homologue of gadd45a subfamily, which participates in several biological processes, such as inflammation and apoptosis. Black rockfish (Sebastes schlegelii) is an important commercial fish species in China. In current study, black rockfish gadd45ab (Ss_gadd45ab) was characterized as a target gene of miR-20b-5p. The results indicated that high evolutionary conservations were found in the sequence and structure of Ss_gadd45ab, which was also detected to locate on the cytomembrane in the black rockfish intestine. The expressions of Ss_gadd45ab and diverse cytokines related to immune response were significantly induced with different patterns by the infection of E. tarda. Moreover, all tested immune genes were dramatically up-regulated when Ss_gadd45ab was overexpressed in the intestine cells, and significant up-regulations and down-regulations of almost these immune genes were observed in the overexpressed cells during the LPS stimulation at 12 h and 24 h, respectively, which implied the potential regulations of Ss_gadd45ab in the immune system. Meanwhile, the overexpression of Ss_gadd45ab was found to prevent the invasion of E. tarda and promote the cell apoptosis in the intestine cells of black rockfish. Therefore, a profile of a novel regulatory mechanism of Ss_gadd45ab targeted by miR-20b-5p in the inflammatory and apoptotic responses of black rockfish during pathogenic infections was hypothesized. Even though the potential functions of Ss_gadd45ab on the inflammation and apoptosis in the black rockfish intestine during pathogenic infections have been described preliminarily in this study, more efforts are still urgent to be done for the further verification of this regulatory mechanism in black rockfish.

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