华北农学报 ›› 2024, Vol. 39 ›› Issue (3): 215-223. doi: 10.7668/hbnxb.20194709

所属专题: 畜牧

• 畜牧·水产·兽医 • 上一篇    下一篇

牛Bta-miR-494序列特征及其组织表达分析

徐俊杰, 丁燕玲, 李承隆, 周小南, 苏总华, 曲畅, 史远刚, 康晓龙   

  1. 宁夏大学 动物科技学院,宁夏 银川 750021
  • 收稿日期:2023-12-10 出版日期:2024-06-28
  • 通讯作者:
    康晓龙(1982—),男,宁夏吴忠人,教授,博士后,博士生导师,主要从事动物基因组与分子育种研究。
  • 作者简介:

    徐俊杰(1999—),男,河南安阳人,在读硕士,主要从事动物遗传育种研究。

  • 基金资助:
    国家自然科学基金项目(32160776); 中国科学院“西部之光”人才培养计划项目(XAB2022YW11); 现代农业产业技术体系(CARS-36)

Sequence Characterization and Tissue Expression Analysis of Bovine Bta-miR-494

XU Junjie, DING Yanling, LI Chenglong, ZHOU Xiaonan, SU Zonghua, QU Chang, SHI Yuangang, KANG Xiaolong   

  1. College of Animal Science and Technology,Ningxia University,Yinchuan 750021,China
  • Received:2023-12-10 Published:2024-06-28

摘要:

为探究牛Bta-miR-494的序列特征及其组织表达情况,运用生物信息学方法分析其上游序列的 CpG岛、启动子及转录因子特征及其在不同物种间的保守性;之后对牛Bta-miR-494的靶基因进行预测及功能富集分析;最后通过qRT-PCR方法检测其在牛不同组织及不同时期同一组织间的时空表达特征。结果表明,Bta-miR-494在不同物种间高度保守且与山羊亲缘关系最近,其上游不含CpG岛、存在2个转录起始位点;预测靶基因富集分析表明,Bta-miR-494的靶基因显著富集在PI3K-Akt、p53及MAPK等与肌肉生长发育及代谢相关的信号通路;qRT-PCR结果显示,Bta-miR-494在成年牛肝脏中的表达量最高,睾丸中表达量最低;且Bta-miR-494在成年牛股二头肌中的表达量显著高于初生犊牛,而心肌和背最长肌中的表达量显著低于初生犊牛。这种组织间差异性表达提示,Bta-miR-494可能在牛不同生长阶段的肌肉组织发育过程中主导不同的生肌表达模式。

关键词: 牛, Bta-miR-494, 功能富集, 组织表达, 骨骼肌

Abstract:

In order to investigate the sequence characteristics of bovine Bta-miR-494 and its tissue expression,bioinformatics methods were used to analyze the characteristics of CpG islands,promoters and transcription factors of its upstream sequence and their conservatism among different species;then predicted and functionally enriched the target genes of bovine Bta-miR-494;and finally detected its spatial and temporal expression characteristics among different tissues and the same tissue at different periods of time of the bovine Bta-miR-494 by qRT-PCR method.The results showed that Bta-miR-494 was highly conserved among different species and had the closest affinity to goat,with no CpG island upstream and two transcriptional start sites;the target gene enrichment analysis showed that the target genes of Bta-miR-494 were significantly enriched in the signaling pathways related to muscle growth and metabolism,such as PI3K-Akt,p53 and MAPK; the predictive target gene enrichment analysis showed that the target genes of Bta-miR-494 were significantly enriched in the signaling pathways related to muscle growth and metabolism.qRT-PCR results showed that the expression of Bta-miR-494 was highest in the liver and lowest in the testis of adult cows;and the expression of Bta-miR-494 was significantly higher in the biceps femoris of adult cows than that of newborn calves,whereas the expression of Bta-miR-494 in the cardiac muscle and longitudinal muscle of dorsal cows was significantly lower than that of newborn calves,while the expression of Bta-miR-494 in the cardiac muscle and the longissimus dorsi muscle was significantly lower than that of newborn calves.This inter-tissue differential expression suggests that Bta-miR-494 may dominate different myogenic expression patterns during the development of muscle tissues at different growth stages in cattle.

Key words: Bovine, Bta-miR-494, Functional enrichment, Tissue expression, Skeletal muscle

引用本文

徐俊杰, 丁燕玲, 李承隆, 周小南, 苏总华, 曲畅, 史远刚, 康晓龙. 牛Bta-miR-494序列特征及其组织表达分析[J]. 华北农学报, 2024, 39(3): 215-223. doi: 10.7668/hbnxb.20194709.

XU Junjie, DING Yanling, LI Chenglong, ZHOU Xiaonan, SU Zonghua, QU Chang, SHI Yuangang, KANG Xiaolong. Sequence Characterization and Tissue Expression Analysis of Bovine Bta-miR-494[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(3): 215-223. doi: 10.7668/hbnxb.20194709.