畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (11): 1793-1798.doi: 10.11843/j.issn.0366-6964.2014.11.008

• 遗传繁育 • 上一篇    下一篇

内蒙古白绒山羊FGF5基因克隆及其靶向shRNA表达载体的构建和鉴定

鲍文蕾,其布日,姚睿原,郭志新,朝格图,王彦凤,王志钢*   

  1. (内蒙古大学生命科学学院, 呼和浩特 010021)
  • 收稿日期:2014-01-25 出版日期:2014-11-23 发布日期:2014-11-23
  • 通讯作者: 王志钢,教授, Tel:+86-471-4992435,E-mail:lswzg@imu.edu.cn
  • 作者简介:鲍文蕾(1986-),女,内蒙古赤峰人,博士生,主要从事微生物和动物基因工程研究,E-mail:bwlnhm@sina.com
  • 基金资助:

    国家自然科学基金(31160469);国家转基因重大专项 (2013ZX08008-002)

Cloning FGF5 from Inner Mongolia Cashmere Goat and Construction and Identification of shRNA Expression Vectors Targeting FGF5 Gene

BAO Wen-lei,HE Qi-buri,YAO Rui-yuan,GUO Zhi-xin,BAO Chao-getu,WANG Yan-feng,WANG Zhi-gang*   

  1. (College of Life Science,Inner Mongolia University,Hohhot 010021,China)
  • Received:2014-01-25 Online:2014-11-23 Published:2014-11-23

摘要:

旨在构建内蒙古白绒山羊成纤维细胞生长因子Ⅴ(Fibroblast growth factor 5,FGF5)基因shRNA真核表达载体(pRNAT-shRNA)。以内蒙古白绒山羊胎儿成纤维细胞总RNA为模板,PCR扩增FGF5基因。设计并合成3条FGF5基因的靶向shRNA序列,分别插入pRNAT-U6.1/Neo载体中,构建重组干扰质粒载体pRNAT-shRNA1、pRNAT-shRNA2和pRNAT-shRNA3,用脂质体LipofectamineTM2000将各重组干扰质粒转染内蒙古白绒山羊胎儿成纤维细胞,Real time PCR检测FGF5 mRNA表达量。结果表明:克隆获得813 bp的目的基因,包含了完整的ORF,编码270个氨基酸。核苷酸序列及推导的氨基酸序列与绵羊FGF5基因(NM_001246263.1)及氨基酸序列同源性均为99%。FGF5基因shRNA 重组质粒经测序鉴定证明构建成功。重组表达质粒转染绒山羊胎儿成纤维细胞 48 h 后可见绿色荧光表达;pRNAT-shRNA1组、pRNAT-shRNA2组和pRNAT-shRNA3组FGF5的 mRNA表达水平均低于干扰空载体对照组(P<0.01),pRNAT-shRNA2对FGF5的表达具有最佳的抑制效应。综上表明,成功构建pRNAT-U6.1/Neo- FGF5表达载体,为探讨FGF5在毛囊生长中的作用奠定了基础。

Abstract:

To construct the shRNA vector(pRNAT-shRNA) for Inner Mongolia Cashmere goat fibroblast growth factor 5(FGF5).Total RNA as templates was extracted from Inner Mongolia Cashmere goat fetal fibroblasts(GFb) cells,FGF5 CDs was amplified by PCR.Three shRNA sequences targeting FGF5 were designed and linked with interference vector pRNAT-U6.1/Neo,labeled as pRNAT-shRNA1,pRNAT-shRNA2 and pRNAT-shRNA3,which were transfected into GFb cells by lipofectamineTM2000.FGF5 mRNA expression was detected by real time PCR.The results showed that the cloned FGF5 CDs from Inner Mongolia Cashmere goat was 813 bp in length including integral ORF which encodes 270 amino acids residues.The homology of nucleotide sequence and predicted amino acid sequences were all 99% compared with ovis aries FGF5.pRNAT-shRNA was constructed successfully.Green fluorescence could be seen from transfected cells for 48 h.FGF5 mRNA expression levels were significantly lower than control group(P<0.01) in transfected pRNAT-shRNAs groups,The interference effect of pRNAT-shRNA2 group was the best in 3 groups.pRNAT-shRNA vector may provide a novel applicable strategy for the function of FGF5 in hair follicle.

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