Dynamic Transcriptomic Analysis of Breast Muscle Development From the Embryonic to Post-hatching Periods in Chickens
文献类型： 外文期刊
作者： Liu, Jie 1 ; Lei, Qiuxia 1 ; Li, Fuwei 1 ; Zhou, Yan 1 ; Gao, Jinbo 1 ; Liu, Wei 1 ; Han, Haixia 1 ; Cao, Dingguo 1 ;
作者机构： 1.Shandong Acad Agr Sci, Poultry Inst, Jinan, Peoples R China
2.Poultry Breeding Engn Technol Ctr Shandong Prov, Jinan, Peoples R China
3.Shandong Prov Key Lab Poultry Dis Diag & Immunol, Jinan, Peoples R China
关键词： breast muscle; chickens; development; differential gene expression; RNA sequencing
期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.599； 五年影响因子：4.888 ）
ISSN：
年卷期： 2020 年 10 卷
页码：
收录情况： SCI
摘要： Skeletal muscle development and growth are closely associated with efficiency of poultry meat production and its quality. We performed whole transcriptome profiling based on RNA sequencing of breast muscle tissue obtained from Shouguang chickens at embryonic days (E) 12 and 17 to post-hatching days (D) 1, 14, 56, and 98. A total of 9,447 differentially expressed genes (DEGs) were filtered (Q < 0.01, fold change > 2). Time series expression profile clustering analysis identified five significantly different expression profiles that were divided into three clusters. DEGs from cluster I with downregulated pattern were significantly enriched in cell proliferation processes such as cell cycle, mitotic nuclear division, and DNA replication. DEGs from cluster II with upregulated pattern were significantly enriched in metabolic processes such as glycolysis/gluconeogenesis, insulin signaling pathway, calcium signaling pathway, and biosynthesis of amino acids. DEGs from cluster III, with a pattern that increased from E17 to D1 and then decreased from D1 to D14, mainly contributed to lipid metabolism. Therefore, this study may help us explain the mechanisms underlying the phenotype that myofiber hyperplasia occurs predominantly during embryogenesis and hypertrophy occurs mainly after birth at the transcriptional level. Moreover, lipid metabolism may contribute to the early muscle development and growth. These findings add to our knowledge of muscle development in chickens.
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