Characterization of Chromatin Accessibility in Fetal Bovine Chondrocytes
文献类型: 外文期刊
第一作者: Zhang, Qi
作者: Zhang, Qi;Li, Qian;Wang, Yahui;Zhang, Yapeng;Peng, Ruiqi;Wang, Zezhao;Zhu, Bo;Xu, Lingyang;Gao, Xue;Chen, Yan;Gao, Huijiang;Li, Junya;Zhang, Lupei;Hu, Junwei;Qian, Cong;Ma, Minghao;Duan, Rui;Zhang, Lupei
作者机构:
关键词: ATAC-seq; bovine fetal chondrocytes; transcription factors
期刊名称:ANIMALS ( 影响因子:3.0; 五年影响因子:3.2 )
ISSN: 2076-2615
年卷期: 2023 年 13 卷 11 期
页码:
收录情况: SCI
摘要: Cartilage development plays a crucial role in human health and animal agriculture, and fetal development takes on particular importance in this process. In this study, we identified open chromatin regions in bovine fetal chondrocytes and peaks enriched in the promoter region. By integrating chromatin accessibility with transcriptome data and Genome-Wide Association Studies results of bovine stature traits, we further described the regulatory functions of these regulatory elements defined by open chromatin accessibility. Overall, these findings provide valuable information for understanding the regulatory mechanisms in cartilage development and conducting beef cattle genetic improvement programs. Despite significant advances of the bovine epigenome investigation, new evidence for the epigenetic basis of fetal cartilage development remains lacking. In this study, the chondrocytes were isolated from long bone tissues of bovine fetuses at 90 days. The Assay for Transposase-Accessible Chromatin with high throughput sequencing (ATAC-seq) and transcriptome sequencing (RNA-seq) were used to characterize gene expression and chromatin accessibility profile in bovine chondrocytes. A total of 9686 open chromatin regions in bovine fetal chondrocytes were identified and 45% of the peaks were enriched in the promoter regions. Then, all peaks were annotated to the nearest gene for Gene Ontology (GO) and Kyoto Encylopaedia of Genes and Genomes (KEGG) analysis. Growth and development-related processes such as amide biosynthesis process (GO: 0043604) and translation regulation (GO: 006417) were enriched in the GO analysis. The KEGG analysis enriched endoplasmic reticulum protein processing signal pathway, TGF- fi signaling pathway and cell cycle pathway, which are closely related to protein synthesis and processing during cell proliferation. Active transcription factors (TFs) were enriched by ATAC-seq, and were fully verified with gene expression levels obtained by RNA-seq. Among the top50 TFs from footprint analysis, known or potential cartilage development-related transcription factors FOS, FOSL2 and NFY were found. Overall, our data provide a theoretical basis for further determining the regulatory mechanism of cartilage development in bovine.
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