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Huang Y, Zhang J, Liu J, Hu Y, Ni S, Yang Y, Yu Y, Huang X, Qin Q. Fish TRIM35 negatively regulates the interferon signaling pathway in response to grouper nodavirus infection. FISH & SHELLFISH IMMUNOLOGY 2017; 69:142-152. [PMID: 28823982 DOI: 10.1016/j.fsi.2017.08.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/07/2017] [Accepted: 08/16/2017] [Indexed: 06/07/2023]
Abstract
Tripartite motif-containing protein 35 (TRIM35) has been demonstrated to exert critical roles in cancer, cell death and other multiple cell processes. However, the precisely roles of TRIM35 during virus infection still remained largely unknown. In the current study, we cloned a TRIM35 gene from orange spotted grouper (EcTRIM35) and uncovered its roles in response to nodavirus infection. EcTRIM35 encoded a 456-aa protein which showed 65% and 32% identity to large yellow croaker (Larimichthys crocea) and human (Homo sapiens), respectively. Structure prediction and amino acid alignment analysis indicated that EcTRIM35 contained three conserved domains, including RING domain, B-BOX and SPRY domain. In healthy grouper, the high expression level of EcTRIM35 could be detected in liver, spleen and intestine. After infection with red-spotted grouper nervous necrosis (RGNNV) and Singapore grouper iridovirus (SGIV) in GS cells, the transcript of EcTRIM35 was significantly up-regulated with the infection time increased. Under fluorescence microscopy, the bright fluorescence aggregates were observed in EcTRIM35 transfected cells, but the fluorescence distribution was obviously altered in the EcTRIM35-ΔRING transfected cells. After incubation with RGNNV, the overexpression of EcTRIM35 in vitro significantly enhanced the viral replication, evidenced by the enhancement of cytopathic effect (CPE) severity and the up-regulation of the viral gene transcription. Moreover, the ectopic expression of EcTRIM35 significantly decreased the expression of interferon signaling molecules or effectors. Further studies elucidated that EcTRIM35 overexpression significantly weakened the MAVS-, MITA- or TBK1-induced interferon immune response, but showed no effects on MDA5-induced immune response. Thus, our results will shed new lights on the roles of fish TRIM35 in innate immune response against grouper virus infection.
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Affiliation(s)
- Youhua Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jingcheng Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Jiaxin Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yin Hu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Songwei Ni
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Ying Yang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Yepin Yu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xiaohong Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
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Luo K, Li Y, Xia L, Hu W, Gao W, Guo L, Tian G, Qi Z, Yuan H, Xu Q. Analysis of the expression patterns of the novel large multigene TRIM gene family (finTRIM) in zebrafish. FISH & SHELLFISH IMMUNOLOGY 2017; 66:224-230. [PMID: 28461211 DOI: 10.1016/j.fsi.2017.04.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/24/2017] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
Tripartite motif (TRIM) proteins are receiving increased research interest because of their roles in a wide range of cellular biological processes in innate immunity. In zebrafish (Danio rerio), the functions of the finTRIM (ftr) family are unclear. In the present study, we investigated the expression pattern of ftr12, ftr51, ftr67, ftr82, ftr83, and ftr84 in zebrafish for the first time. The results showed that ftr12, ftr67, and ftr84 are maternally expressed in the oocyte and highly expressed at the early stage (0-4 hpf) of embryo (P < 0.05), suggesting their involvement in the embryonic innate defense system. The ftr82 gene was highly expressed at 8 hpf (P < 0.05), which implied that the embryos could synthesize their own immunity-related mRNAs. However, ftr51 and ftr83 were highest at 8 hpf (2.33 and 51.53 relative to β-actin respectively) and might mediate embryonic development. The expression levels of ftr12, ftr51, and ftr67 were highest in the gill, intestines, and liver, respectively. Ftr82, ftr83, and ftr84 were predominantly expressed in the kidney, suggesting that these finTRIMs might play roles in both immunity and non-immunity-related tissue compartments. Zebrafish embryonic fibroblast (ZF4) cells were infected with Grass carp reovirus (GCRV) and Spring viremia of carp virus (SVCV). During GCRV infection, the expression of ftr12 was significantly upregulated from 12 h to 24 h; and ftr51 and ftr67 increased from 3 h to 12 h. The expressions of ftr82, ftr83, and ftr84 were only upregulated at 12 h, 12 h, and 24 h, respectively. All of these genes were significantly downregulated at 48 h (P < 0.05). Challenge with SVCV upregulated the expressions of ftr12 and ftr51 at 12 h and 48 h (P < 0.05), respectively, and ftr67 reached its highest expression level at 3 h. ftr82 showed only a slight upregulation at 6 h and 48 h, and ftr83 and ftr84 were consecutively increased, reaching their highest levels at 12 h (P < 0.05). Meanwhile, ftr67 and ftr83 were significantly downregulated at 48 h (P < 0.05). Our research demonstrated that ftr12, ftr51, ftr67, ftr82, ftr83, and ftr84 probably have important roles in innate immune responses and in non-immunity-related tissues.
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Affiliation(s)
- Kai Luo
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Youshen Li
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Lihai Xia
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Wei Hu
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China; School of Animal Science, Yangtze University, Jingzhou 434020, China
| | - Weihua Gao
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China; School of Animal Science, Yangtze University, Jingzhou 434020, China
| | - Liwei Guo
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Guangming Tian
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Zhitao Qi
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China
| | - Hanwen Yuan
- College of Marine and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi 530006, China; Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Nanning, Guangxi 530006, China.
| | - Qiaoqing Xu
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou 434020, China; School of Animal Science, Yangtze University, Jingzhou 434020, China.
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Abstract
The TRIM family protein was known to play an important role in many cellular processes, including potential antiviral activity, which has attracted lots of attention. In this study, a TRIM47 homolog from common carp (Cyprinus carpio) was cloned and the full length coding DNA sequence (CDS) of this gene was analyzed, results showed that there was a 97% similarity between common carp and zebrafish (Danio rerio), but only 18% similarity with that of human (Homo sapiens) and mouse (Mus musculus). The tissue distribution analysis showed TRIM47 had the highest mRNA level in the brain, a few immune related organs such as liver and kidney also had a relatively high level of TRIM47 expression. SVCV infection decreased TRIM47 mRNA level significantly both in vitro and in vivo, but its expression was not affected by the virus at the protein level. The recombinant plasmid pcDNA4-TRIM47-His was constructed, the subcellular localization in FHM cells showed that TRIM47 uniformly distributed in the cytoplasm at the form of tiny spots, and partially localized in the mitochondria. Overexpression TRIM47 in FHM cells significantly decreased the mRNA level of SVCV-G gene, and it was accompanied with the increasing of IFN1, a member of type I IFN, at the case of SVCV stimulation. In summary, our results had first demonstrated that TRIM47 of the common carp played an important role in viral resistance processes as well as the regulation of IFN signaling pathway.
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