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Alterations of the circular RNA profile in the jejunum of neonatal calves in response to colostrum and milk feeding

文献类型: 外文期刊

作者: Zhao, X. W. 1 ; Huang, D. W. 1 ; Zhu, H. L. 1 ; Pan, X. C. 1 ; Wang, X. X. 1 ; Qi, Y. X. 1 ; Cheng, G. L. 1 ; Zhao, H. L. 1 ;

作者机构: 1.Anhui Acad Agr Sci, Inst Anim Sci & Vet Med, Hefei 230031, Anhui, Peoples R China

关键词: circular RNA; colostrum; jejunum; newborn calf

期刊名称:JOURNAL OF DAIRY SCIENCE ( 影响因子:4.034; 五年影响因子:4.354 )

ISSN: 0022-0302

年卷期: 2019 年 102 卷 8 期

页码:

收录情况: SCI

摘要: Circular RNA (circRNA) have been suggested to contribute to regulating gene expression in various tissues and cells of eukaryotes. However, little is known regarding the expression pattern of circRNA and their potential function in the small intestine of neonatal calves that receive colostrum. In the current study, jejunum tissue samples were collected from control calves (2 h after birth; CT; n = 3) and neonatal calves that ingested colostrum (24 h after birth; CO; n = 3) or milk (24 h after birth; MK; n = 3) to compare the circRNA expression patterns using a high-throughput RNA sequencing approach. A total of 21,213, 17,861, and 21,737 circRNA were identified in the CT, CO, and MK groups, respectively. Only 13,254 of these circRNA were common to the 3 groups, suggesting high specificity of circRNA expression depending on nutrient type. In total, 243, 249, and 283 circRNA were differentially expressed in the CO versus CT, CO versus MK, and MK versus CT comparisons, respectively. Gene ontology analysis showed that the differentially expressed circRNA and their predicted or known target genes from the CO and MK groups were mainly involved in macromolecule metabolic process, response to stress, and vesicle-mediated transport. Moreover, pathway analysis showed that the Rap1 signaling pathway, focal adhesion, ubiquitin-mediated proteolysis, and extracellular matrix-receptor interaction were the most significantly enriched pathways. These data collectively indicate that circRNA are abundant and dynamically expressed when calves receive colostrum and act as microRNA sponges to regulate their target genes for jejunum function during the early development of newborn calves.

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