Insights into response to food intake in anadromous Coilia nasus through stomach transcriptome analysis
文献类型： 外文期刊
作者： Ma, Fengjiao 1 ; Yin, Denghua 1 ; Fang, Di-An 1 ; Yang, Yanping 1 ; Jiang, Min 1 ; You, Lei 3 ; Tian, Jia-Li 1 ; Xu, Pao; 1 ;
作者机构： 1.CAFS, Sci Observing & Expt Stn Fishery Resources & Envi, Minist Agr & Rural Affairs, Freshwater Fisheries Res Ctr, Wuxi 214081, Jiangsu, Peoples R China
2.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai, Peoples R China
3.Nanjing Agr Univ, Wuxi Fishery Coll, Wuxi, Jiangsu, Peoples R China
关键词： Coilia nasus; food intake; metabolic regulation; transcriptome
期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）
ISSN： 1355-557X
年卷期：
页码：
收录情况： SCI
摘要： Coilia nasus is a valuable commercial migratory fish species with ecological and economic importance in China. To explore the molecular mechanisms underlying the response to food intake, the stomach transcriptomes of feeding and non-feeding C. nasus were analysed via RNA-seq. A total of 610,640,864 clean reads were obtained, and annotation to six databases identified 63,567 unigenes. Comparative analysis of the gene expression in feeding and non-feeding C. nasus identified 1,968 differentially expressed genes (p < .05), including 1,180 up-regulated and 788 down-regulated genes. Our results showed that stomach distention activated the vagal afferent neurons, resulting in satiation. Several of the most relevant appetite genes (e.g. leptin receptor [LepR], somatostatin [SS], nucleobindin-2 [NUCB2], 5-hydroxytryptamine receptor [5-HTR], growth hormone receptor [GHR]) were also involved in the regulation of food intake and led to the termination of feeding. Furthermore, significant differences were observed in the genes encoding key enzymes involved in metabolism such as the tricarboxylic acid cycle (TCA) pathways, fatty acid synthesis and glycolysis, indicating that C. nasus utilizes food for its energy and nutrient contents to support life and gonadal development. These findings provide valuable insights into the mechanisms underlying appetite and metabolic regulation in anadromous fish and create a foundation for further research on C. nasus artificial breeding and migration energetics.
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