Molecular characterization and expression regulation of the factor-inhibiting HIF-1 (FIH-1) gene under hypoxic stress in bighead carp (Aristichthys nobilis)

被引:12
|
作者
Feng, Xiu [1 ]
Yu, Xiaomu [1 ]
Pang, Meixia [2 ]
Tong, Jingou [1 ]
机构
[1] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
[2] Shenzhen Polytech, Sch Appl Chem & Biol Technol, Shenzhen 518055, Peoples R China
关键词
Aristichthys nobilis; Factor-inhibiting HIF-1; Gene expression; Hypoxia; FACTOR-ALPHA SUBUNITS; INDUCIBLE FACTOR HIF; HIF-1-ALPHA; PROTEIN; CLONING; VHL; OVEREXPRESSION; RESPONSES; ISOFORMS; DISTINCT;
D O I
10.1007/s10695-018-0597-7
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Factor-inhibiting HIF-1 (FIH-1) is an asparagine hydroxylase that interacts with hypoxia-inducible factor 1 (HIF-1) to regulate transcriptional activity of HIF-1. Few studies of fish FIH-1 have been reported to date. In this study, the cDNA of FIH-1 gene was cloned and characterized for bighead carp, Aristichthys nobilis (AnFIH-1). The AnFIH-1 cDNA is 2065bp in length, encoding a protein of 357 amino acid (aa) residues, which contains a JmjC homology region of the jumonji transcription factors. AnFIH-1 shares high identities with other vertebrate FIH-1 (79.1-96.4%), especially in the JmjC homology region, suggesting its conserved function. During the embryonic stages of A. nobilis, AnFIH-1 had significantly high expression levels in unfertilized egg and blastula. In healthy tissues, its predominant mRNA expression was detected in muscle. The mRNA levels of AnFIH-1 were significantly upregulated in the liver, gill, hypothalamus, and spleen after hypoxic treatment, and then decreased to pretreatment levels after 6-h re-oxygenation. However, in the muscle, continual increasing of mRNA expression was observed after hypoxic shock and re-oxygenation. These results indicate that FIH-1 may play an important role in physiological regulation for adapting to hypoxia stress in A. nobilis.
引用
收藏
页码:657 / 665
页数:9
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