Signal transducer and activator of transcription 3 (STAT3) homologue in turbot (Scophthalmus maximus): Molecular characterization and expression analysis
文献类型： 外文期刊
作者： Wang, Na 1 ; Yang, Chang-Geng 1 ; Sun, Zhong-Zhi 1 ; Wang, Xian-Li 1 ; Chen, Song-Lin 1 ;
作者机构： 1.Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
2.Shanghai Ocean Univ, Inst E, Shanghai Municipal Educ Commiss, Shanghai 201306, Peoples R China
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）
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收录情况： SCI
摘要： Signal transducer and activator of transcription 3 (STAT3) acts as an important mediator in multiple biological processes induced by different cytokines. So far, little information is available in fish STAT3. In this study, turbot (Scophthalmus maximus) STAT3 gene was cloned and characterized for the first time. The turbot STAT3 full-length cDNA consists of 2355 nucleotides encoding a polypeptide of 784 amino acids with four conserved domains including STAT_int, STAT_alpha, STAT_bind and SH2 domain. The phylogenetic tree showed that turbot STAT3 shared the closest relationship with mandarin fish (Siniperca chuatsi) STAT3. The autoactivation experiment in yeast proved that turbot STAT3 was a strong transcription factor. The quantitative RT-PCR experiment indicated that Stat3 mRNA was expressed in widespread tissues with the highest expression levels in the liver. And the further expression patterns analysis revealed that turbot Stat3 expression levels were increased in liver, spleen, kidney of fish infected with Vibrio anguillarum and liver of fish infected with LCDV. Meantime, hepcidin, one of STAT3 target gene, was also up-regulated in liver of fish infected with two pathogens. These results suggested that turbot Stat3 may involved in the immune defense process as a transcription factor.
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