title: The GRIM-19 plays a vital role in shrimps' responses to Vibrio alginolyticus.
abstract: GRIM-19 (gene associated with retinoid-interferon-induced mortality 19), a novel cell death regulatory gene, plays important roles in cell apoptosis, mitochondrial respiratory chain and immune response. It has been reported to interact physically with STAT3 and inhibit STAT3-dependent signal transduction. In this study, a new GRIM-19 gene, which is a 789-bp gene encoding a 149 amino acids protein, is identified and characterized from Litopenaeus vannamei. The tissue distribution patterns showed that LvGRIM-19 was widely expressed in all examined tissues, with the highest expression in muscle. Quantitative real-time PCR revealed that LvGRIM-19 was down-regulated in hepatopancreas after infection with the Vibrio alginolyticus. Knockdown of LvGRIM-19 by RNA interference resulted in a lower mortality of L. vannamei under V. alginolyticus infection, as well as an enhancement in the protein expression of STAT gene and JAK gene. V. alginolyticus infection caused an increase apoptotic cell ratio and ROS production of L. vannamei, while LvGRIM-19 silenced shrimps showed significantly lower than GFP group. Our results suggest that the GRIM-19 plays a vital role in shrimps' responses to V. alginolyticus. Interferenced LvGRIM-19 treatment during V. alginolyticus infection could increase 12 h survival rate, which might indicated that LvGRIM-19 is closely related to death of shrimps.
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Ting
authors.initials: T
authors.lastname: Peng
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Mei-Mei
authors.initials: MM
authors.lastname: Gu
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Chang-Sheng
authors.initials: CS
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China. Electronic address: wangwn@scnu.edu.cn.
authors.forename: Wei-Na
authors.initials: WN
authors.lastname: Wang
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Ming-Zhu
authors.initials: MZ
authors.lastname: Huang
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Chen-Ying
authors.initials: CY
authors.lastname: Xie
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Yu-Chao
authors.initials: YC
authors.lastname: Xiao
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Gui-Hong
authors.initials: GH
authors.lastname: Cha
authors.affiliation: Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou 510631, PR China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000818:Animals; D060829:Arthropod Proteins / Q000235:genetics* / Q000378:metabolism; D015536:Down-Regulation; D043143:Hepatopancreas / Q000378:metabolism; D007113:Immunity, Innate; D053612:Janus Kinases / Q000235:genetics / Q000378:metabolism; D008969:Molecular Sequence Data; D009247:NADH, NADPH Oxidoreductases / Q000235:genetics* / Q000378:metabolism; D033561:Penaeidae / Q000235:genetics / Q000276:immunology* / Q000382:microbiology*; D060888:Real-Time Polymerase Chain Reaction; D050791:STAT Transcription Factors / Q000235:genetics / Q000378:metabolism; D017422:Sequence Analysis, DNA
chemical_list: D060829:Arthropod Proteins; D050791:STAT Transcription Factors; D009247:NADH, NADPH Oxidoreductases; D053612:Janus Kinases
keywords: GRIM-19; JAK/STAT pathway; Litopenaeus vannamei; dsRNA interfering technique