畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (9): 1496-1501.doi: 10.11843/j.issn.0366-6964.2015.09.003

• 遗传繁育 • 上一篇    下一篇

L-FABP启动子区C/EBPα结合位点的定点突变分析

贺綦1,2,3,孙婴宁1,2,3,李辉1,2,3*,王启贵1,2,4*   

  1. (1.农业部鸡遗传育种重点实验室,哈尔滨 150030; 2.黑龙江省普通高等学校动物遗传育种与繁殖重点实验室,哈尔滨 150030; 3.东北农业大学动物科学技术学院,哈尔滨 150030; 4.重庆市畜牧科学院,重庆 402460)
  • 收稿日期:2014-11-21 出版日期:2015-09-23 发布日期:2015-09-23
  • 通讯作者: 李辉,博士,教授,主要从事动物遗传育种研究,E-mail:lihui@neau.edu.cn;王启贵,博士,教授,主要从事动物遗传育种研究,E-mail:wangqigui@hotmail.com
  • 作者简介:贺綦(1988-),女,黑龙江哈尔滨人,硕士生,主要从事动物遗传育种与繁殖研究,E-mail:heqidongke@163.com
  • 基金资助:

    国家自然科学基金(30972087);博士后研究人员落户黑龙江科研启动资助金(LBH-Q08131);重庆市现代农业人才培育工程(14401)

Site Directed Mutagenesis for C/EBPα Binding Sites in Chicken L-FABP Promoter

HE Qi1,2,3,SUN Ying-ning1,2,3,LI Hui1,2,3* ,WANG Qi-gui1,2,4*   

  1. (1.Key Laboratory of Chicken Genetics and Breeding,Ministry of Agriculture,Harbin 150030,China;2.Key Laboratory of Animal Genetics,Breeding and Reproduction,Education Department of Heilongjiang Province,Harbin 150030,China;3.College of Animal Science and Technology,Northeast Agricultural University,Harbin 150030,China;4.Chongqing Academy of Animal Science,Chongqing 402460,China)
  • Received:2014-11-21 Online:2015-09-23 Published:2015-09-23

摘要:

为进一步分析L-FABP启动子区域中的C/EBPα结合位点以确定其在L-FABP转录中的调控作用。本研究采用定点突变方法将L-FABP启动子区域中的C/EBPα结合位点进行有效突变。结果显示,C/EBPα外源过表达可以抑制L-FABP启动子活性,突变L-FABP启动子区域中C/EBPα结合位点后L-FABP的启动子活性明显升高。这些结果表明,鸡L-FABP基因受到C/EBPα基因负调控作用,且C/EBPα很可能通过与该位点结合参与L-FABP的转录调控,为进一步研究C/EBPαL-FABP基因转录调控中的作用提供重要依据。

Abstract:

In order to further determine the C/EBPα binding site of L-FABP and analyze its role in the regulation of L-FABP transcription,the C/EBPα binding site in L-FABP promoter was effectively mutated using site-directed mutagenesis in the current study.The results showed that the expression of L-FABP was significantly repressed by C/EBPα,but the L-FABP promoter activity was significantly promoted after the mutation of C/EBPα binding site.In a conclusion,the expression of L-FABP was significantly repressed by C/EBPα,and C/EBPα probably involved in the regulation of L-FABP expression through this binding site.These results will provide a foundation for further research on the regulatory mechanism and function of chicken C/EBPα on L-FABP gene.

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