A novel Laccase gene from Litopenaeus vannamei is involved in the immune responses to pathogen infection and oxidative stress
文献类型： 外文期刊
作者： Chen, Yi-Hong 1 ; Song, Fei 1 ; Miao, Yu-Tao 1 ; He, Hong-Hui 3 ; Lian, Yu-Ying 4 ; Li, Xin-Cang 5 ; Li, Ming 6 ;
作者机构： 1.South China Normal Univ, Coll Life Sci, Guangdong Prov Key Lab Hlth & Safe Aquaculture, IMASE,Guangzhou Key Lab Subtrop Biodivers & Biomo, Guangzhou 510631, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
3.Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontro, 135 Xingang Rd West, Guangzhou 510275, Peoples R China
4.Sun Yat Sen Univ, Sch Marine Sci, State Key Lab Biocontro, 135 Xingang Rd West, Guangzhou 510275, Peoples R China
5.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
6.Guangxi Inst Fisheries, Guangxi Key Lab Aquat Genet Breeding & Hlth Aquac, Nanning, Peoples R China
关键词： Litopenaeus vannamei; Laccase; Oxidative stress; NF-E2-related factor 2
期刊名称：DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY （ 影响因子：3.636； 五年影响因子：3.654 ）
ISSN： 0145-305X
年卷期： 2020 年 105 卷
页码：
收录情况： SCI
摘要： Laccases (Lacs) are copper-containing oxidase enzymes that are found in various plants, fungi, and microorganisms. For invertebrates, particularly insects and crustaceans, Lacs have been shown to be involved in immune responses. In shrimp, a Lac gene has been cloned and functionally characterized, which revealed that it is involved in shrimp anti-pathogen infection. In the present study, a novel Lac gene (LvLac2) was cloned from Litopenaeus vannamei. Real-time RT-PCR analysis showed that LvLac2 is induced by white spot syndrome virus (WSSV)- or Vibrio alginolyticus infection. In addition, the downregulated expression of LvLac2 decreased the cumulative mortality of WSSV- or V. alginolyticus infected shrimps. Moreover, LvLac2 is also induced by oxidative stress. Knocking down the expression of LvLac2 decreased the severity of hepatopancreatic injury caused by oxidative stress, as well as reduced the cumulative shrimp mortality during oxidative stress. Furthermore, gene reporter assays showed that the expression of LvLac2 is regulated by NF-E2-related factor 2, which is the key transcription factor of the oxidative stress response signaling pathway. Our study revealed that LvLac2 not only participates in immune responses against infections in L. vannamei but is also involved in oxidative stress responses.
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