Genomic structure, expression pattern and polymorphisms of GILT in golden pompano Trachinotus ovatus (Linnaeus 1758)

文献类型： 外文期刊

第一作者： Zhu, Kecheng

作者： Zhu, Kecheng;Yu, Wenbo;Guo, Huayang;Zhang, Nan;Guo, Liang;Liu, Baosuo;Jiang, Shigui;Zhang, Dianchang;Zhu, Kecheng;Guo, Huayang;Zhang, Nan;Guo, Liang;Liu, Baosuo;Jiang, Shigui;Zhang, Dianchang;Zhu, Kecheng;Guo, Huayang;Zhang, Nan;Guo, Liang;Liu, Baosuo;Jiang, Shigui;Zhang, Dianchang

作者机构：

关键词： Trachinotus ovatus; GILT; SNP site; Gene expression; Bacterial challenge

期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）

ISSN： 0378-1119

年卷期： 2018 年 665 卷

页码：

收录情况： SCI

摘要： The interferon-g-inducible lysosomal thiol reductase (GILT) plays a significant character in the processing and presentation of MHC class II restricted antigen (Ag) by catalyzing disulfide bond reduction in mammals. To explore the function of GILT in the immune system of fish, we cloned a GILT gene homologue from Trachinotus ovatus, the full-length cDNA of GILT, which consisted of 2, 747 bp with a 771 bp open reading frame, encoding a protein of 256 amino acids. Moreover, similar to other species GILT gene, 7 exons and 6 introns were identified in T. ovatus, the deduced protein also possessed a representative characteristic of known GILT proteins. The result of real-time quantitative PCR showed that GILT mRNA was dramatically expressed in immune-associated tissues, such as spleen (p < 0.01) and kidney (p < 0.05). Bacterial challenge revealed that GILT mRNA level remarkably up-regulation in liver, spleen, kidney and intestine after induction with Photobacterium damsela. Furthermore, based on cloned sequences and genome BLAST, only one SNP site (ToGILT-S1-g.148C > G) was identified, and the allele C was significantly associated with high-susceptibility (HS) group, nevertheless, the allele G was dramatically associated with high-resistance (HR) group, indicating potential application for disease resistant breeding selection in T. ovatus.

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