Molecular cloning and gene/protein expression of FAT/CD36 from grass carp (Ctenopharyngodon idella) and the regulation of its expression by dietary energy
文献类型: 外文期刊
第一作者: Tian, Juan
作者: Tian, Juan;Liu, Wei;Wu, Fan;Yu, Lijuan;Lu, Xing;Yang, Chang-Geng;Jiang, Ming;Wen, Hua;Tian, Juan;Jiang, Ming;Gao, Weihua
作者机构:
关键词: Fatty acid translocase;Cluster of differentiation 36;Grass carp;Dietary energy;Molecular cloning
期刊名称:FISH PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:2.794; 五年影响因子:2.876 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Fatty acid translocase/cluster of differentiation 36 (FAT/CD36) functions as a membrane long-chain fatty acid transporter in various tissues in land animals. Not much is known about the CD36 molecule in teleost fish. Therefore, we studied CD36 in grass carp (Ctenopharyngodon idella, ciCD36). The full-length complementary DNA sequence of ciCD36 was 1976 bp, with an ORF of 468 amino acids, which had high sequence similarity to the CD36 of common carp. The messenger RNA (mRNA) expression of ciCD36 was high in the intestine, heart, liver, visceral tissue, and brain, but absent in the kidney. The protein expression of ciCD36 was high in the brain, intestine, liver, heart, muscle, eye, visceral tissue, gonad, and gill, but not in the kidney. Four groups of grass carp (16 tanks) were fed three times daily to satiation with 17.2 kJ gross energy/g diet (control, CON), 19.4 kJ gross energy/g diet (more energy supplied by proteins, HP), 19.9 kJ gross energy/g diet (more energy supplied by fat, HF), and 19.1 kJ gross energy/g diet (more energy supplied by carbohydrate, HC) for 11 weeks, respectively. At the end of the feeding experiment, the fish were fasted for 48 h, and the brain, heart, intestine, and liver were sampled and designated as the 0-h samples. The fish were then fed a single meal of the above four diets, and these tissues were collected at 8- and 24-h intervals after refeeding to analyze ciCD36 mRNA and protein expression levels. The results showed that at the transcriptional and translational levels, ciCD36 expression was significantly affected by refeeding time and the different diets (P < 0.05), and the regulation of its transcription in different tissues varied. At the translational level, the protein expression levels decreased in the CON and HC groups, and increased in the HP and HF groups after refeeding. The results indicated that ciCD36 has a modulatory role in the adaptation to dietary high energy in grass carp. Translational regulation might be responsible for the observed variations in ciCD36 expression.
分类号: S9
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