Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8644886 | Gene | 2018 | 27 Pages |
Abstract
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, 747â¯bp with a 771â¯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 (pâ¯<â¯0.01) and kidney (pâ¯<â¯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.
Keywords
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Biochemistry, Genetics and Molecular Biology
Genetics
Authors
Kecheng Zhu, Wenbo Yu, Huayang Guo, Nan Zhang, Liang Guo, Baosuo Liu, Shigui Jiang, Dianchang Zhang,