›› 2008, Vol. 28 ›› Issue (5): 289-298.

• 论文 • 上一篇    下一篇

长爪沙鼠载脂蛋白E4外显子的克隆初报

  

  1. 浙江省医学科学院,杭州 310013
  • 收稿日期:2008-05-30 出版日期:2008-05-31 发布日期:2008-05-30
  • 基金资助:
    浙江省自然科学基金(Y3080126);浙江省医药卫生青年优秀人才基金(2007QN001)

Analysis and Clone of Apolipoprotein E Extron 4 in Mongolian Gerbil

  1. Zhejiang Academy of Medical Sciences, Hangzhou 310013, China
  • Received:2008-05-30 Online:2008-05-31 Published:2008-05-30

摘要: 目的 克隆并获得长爪沙鼠载脂蛋白ApoE基因E4外显子的序列。方法 根据Genbank中的相关序列,用自行设计的引物,通过常规的RT-PCR方法,从长爪沙鼠肝脏中克隆及测序得到所需要的基因序列。结果 长爪沙鼠载脂蛋白ApoE基因E4外显子长约987bp,经比较发现最终测序的结果与大小鼠ApoE基因的同源性达到了73%-74%,与人ApoE基因的同源性达到了62%,与猪、牛ApoE基因的同源性达到了60%以上,与非人灵长类ApoE基因的同源性达到了57%,用DNAstar进行编码氨基酸预测,基因共编码263个氨基酸,已向genbank提交,登录号码EU780067。结论 利用基因进化的保守性通过PCR方法可以得到长爪沙鼠载脂蛋白E4基因的序列,本实验为筛选长爪沙鼠高脂血症模型的遗传多样性标记,为培育长爪沙鼠的血脂代谢新品系打下基础。

关键词: 载脂蛋白E基因外显子4, 克隆, 长爪沙鼠, 高脂血症

Abstract: Objective To clone the apolipoprotein E gene Extron 4 of the Mongolian gerbil. Methods The primers was designed according to the published sequences in GenBank. A RT-PCR method was applied to clone the apolipoprotein E Extron 4 in liver of the Mongolian gerbil. The PCR products was sequenced and blast with related sequences. Results The results of PCR and sequence presented that the sequence of the apolipoprotein E gene Extron 4 in the Mongolian gerbil was a 987 bp sequences. The result of blast showed the identification between Mongolian gerbil and rat or mouse is 73%~74%, between Mongolian gerbil and human is 62%, between Mongolian gerbil and pig or bovine is above 60%, between Mongolian gerbil and no-human primates is 57%. The coding protein is 263 amino acid residuals. Conclusions The RT-PCR products was the sequence of the apolipoprotein E4 gene of Mongolian gerbil.

Key words: Apolipoprotein E Extron 4, cloning, Mongolian gerbil, Hyperlipidemia