畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (8): 1317-1324.doi: 10.11843/j.issn.0366-6964.2015.08.006

• 遗传繁育 • 上一篇    下一篇

应用生物信息学预测牛新microRNA及验证

崔晓钢,杨少华,谢岩,张胜利,张勤,孙东晓*   

  1. (中国农业大学动物科技学院,农业部动物遗传育种与繁殖重点实验室,畜禽育种国家工程实验室,北京 100193)
  • 收稿日期:2014-04-30 出版日期:2015-08-23 发布日期:2015-08-18
  • 通讯作者: 孙东晓,教授,E-mail:sundx@cau.edu.cn
  • 作者简介:崔晓钢(1985-),男,山西太原人,博士,主要从事动物分子数量遗传学研究,Tel:010-62732768,E-mail:398304310@qq.com
  • 基金资助:

    863课题(2013AA102504);现代农业产业技术体系北京市奶牛创新团队

Computational and Experimental Identification of Novel MicroRNAs in Bovine by Bioinformatics

CUI Xiao-gang,YANG Shao-hua,XIE Yan,ZHANG Sheng-li,ZHANG Qin,SUN Dong-xiao*   

  1. (National Engineering Laboratory for Animal Breeding,Key Laboratory of Animal Genetics,Breeding and Reproduction of Ministry of Agriculture,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China)
  • Received:2014-04-30 Online:2015-08-23 Published:2015-08-18

摘要:

本研究旨在通过比较基因组学和结构序列分析方法预测牛基因组中的新miRNAs并进行试验验证。根据miRNA 分子序列具有一定保守性,将人、小鼠、绵羊、猪和狗5种哺乳动物已知的miRNA 分子与NCBI中牛的全基因组序列(UMD3.1)对比,获得牛miRNAs;随机选取部分预测的miRNAs进行实时荧光定量PCR(qRT-PCR)验证。结果,基于物种间序列同源比对共计预测到44条新的牛miRNAs,选取其中4条miRNAs,通过qRT-PCR方法,发现他们在泌乳期中国荷斯坦牛乳腺、心、子宫和肝组织中均有表达。结果表明,基于比较基因组学和生物信息学预测新的miRNA 分子可行,为奶牛基因表达调控及其性状形成机制研究提供了前期基础。

关键词: 牛, miRNA, 预测, 生物信息学

Abstract:

This study aimed to predict novel miRNAs of bovine by comparative genomics and bioinformatics analysis.According to the conservation of miRNAs sequence,we compared the known miRNAs in human,mouse,sheep,pig and dog with the bovine genome sequence (UMD3.1) in NCBI to predict novel miRNAs,some of which were validated by qRT-PCR.A total of 44 novel miRNAs of bovine were obtained.Four of these were randomly selected to be validated.It was found that the 4 predicted miRNAs were expressed in mammary gland,cardiac muscle,uterus and liver of lactating Chinese Holstein cows.The methodology provides an alternative approach to predict the novel miRNAs and provide a groundwork for gene expression and trait formation mechanisms in dairy cattle.

Key words: bovine, miRNA, prediction, bioinformatics

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