《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (3): 673-678.doi: 10.16431/j.cnki.1671-7236.2017.03.008

• 生物技术 • 上一篇    下一篇

利用miRNA芯片筛选不同月龄香猪肝脏中差异表达的miRNA

李升1, 许亚楠1, 牛熙1, 冉雪琴2   

  1. 1. 贵州大学农业生物工程研究院, 贵阳 550025;
    2. 贵州大学动物科学学院, 贵阳 550025
  • 收稿日期:2016-09-07 出版日期:2017-03-20 发布日期:2017-03-21
  • 通讯作者: 李升 E-mail:listen318@163.com
  • 作者简介:李升(1982-),男,重庆人,博士,副教授,研究方向:分子生物学与基因工程
  • 基金资助:

    国家自然科学基金(31401091);贵州省科学技术基金(黔科合J字[2013]2100号)

Determine the Different Expression miRNAs in Different Months Old Xiang Pigs by miRNA Microarray

LI Sheng1, XU Ya-nan1, NIU Xi1, RAN Xue-qin2   

  1. 1. Institute of Agro-bio Engineering, Guizhou University, Guiyang 550025, China;
    2. Faculty of Animal Science, Guizhou University, Guiyang 550025, China
  • Received:2016-09-07 Online:2017-03-20 Published:2017-03-21

摘要:

为研究miRNA在香猪发育时期的调控功能,试验对3和7月龄香猪肝脏组织中存在表达差异的miRNA进行了筛选。提取3和7月龄香猪肝脏组织总RNA,通过与miRNA芯片杂交,经统计学分析,以变化倍数≥2倍(P<0.05)为阈值,筛选3和7月龄香猪肝脏中表达丰度差异的miRNA,并运用实时荧光定量PCR进行验证。结果发现,与3月龄相比,7月龄香猪肝脏中有11条miRNA表达下调和9条miRNA表达上调,下调倍数最多的是miR-27b,上调倍数最多的是miR-155。对选取的4条差异表达的miRNA进行实时荧光定量PCR反应,结果显示,4条miRNA表达变化趋势与芯片结果一致。本研究结果表明,不同月龄香猪肝脏中的miRNA表达丰度有差异,其中一些可能参与了机体生长发育时期肝细胞的脂肪代谢过程。

关键词: miRNA表达谱; 香猪; 肝脏

Abstract:

To determine the roles of miRNA in the developmental stages of Xiang pig,we investigated the miRNA expression patterns in different months old of Xiang pigs.The total RNA from 3 and 7 months old of Xiang pigs were collected separately. Then,the total RNA were hybridized with the miRNA microarray and the threshold (fold-change>2, P<0.05) were used to identify the different expression miRNA. The quantitative Real-time PCR was performed to verify the microarray result. Compared to the 3 months old group,there were 11 miRNA down regulated and 9 miRNA were up regulated in the 7 months old group. The lowest down regulated miRNA was miR-27b whereas the highest up regulated one was miR-155.The result of quantitative Real-time PCR consistented with the microarray result. The result suggested that some of the dysregulated expression of miRNA might participate in the lipid metabolism in hepatic cells.

Key words: miRNA expression profile; Xiang pig; liver

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