Identification and functional characterization of activating transcription factor 6 (ATF6) from the mud crab (Scylla paramamosain) in response to hydrogen peroxide and bacterial challenge
文献类型： 外文期刊
作者： Liu, Guang-Xin 1 ; Tian, Yu 1 ; Cheng, Chang-Hong 1 ; Ma, Hong-Ling 1 ; Fan, Si-Gang 1 ; Deng, Yi-Qin 1 ; Feng, Juan 1 ; Jiang, Jian-Jun 1 ; Guo, Zhi-Xun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Minist Agr & Rural Affairs, Guangzhou 510300, Guangdong, Peoples R China
关键词： ATF6; Endoplasmic reticulum stress; Innate immunity; Unfolded protein response
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.7； 五年影响因子：4.7 ）
ISSN： 1050-4648
年卷期： 2023 年 143 卷
页码：
收录情况： SCI
摘要： Activating transcription factor 6 (ATF6) is critical for regulation of unfolded protein response (UPR), which is involved in the endoplasmic reticulum (ER) proteostasis maintenance and cellular redox regulation. In the present study, a ATF6 gene from the mud crab (designated as Sp-ATF6) has been cloned and identified. The open reading frame of Sp-ATF6 was 1917 bp, encoding a protein of 638 amino acids. The deduced amino acid sequences of Sp-ATF6 contained a typical basic leucine zipper (BZIP domain). Sp-ATF6 was widely expressed in all tested tissues, with the highest expression levels in the hemocytes and the lowest in the muscle. Subcellular localization showed that Sp-ATF6 was expressed in both nucleus and cytoplasm of S2 cells. The expression level of Sp-ATF6 was induced by hydrogen peroxide and V. parahaemolyticus challenge, indicating that the ATF6 pathway was activated in response to ER stress. In order to know more about the regulation mechanism of the SpATF6, RNA interference experiment was investigated. Knocking down Sp-ATF6 in vivo can decrease the expression of antioxidant-related genes (CAT and SOD) and heat shock proteins (HSP90 and HSP70) after V. parahaemolyticus infection. All these results suggested that Sp-ATF6 played a crucial role in the defense against environmental stress and pathogen infection in crustaceans.
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