›› 2007, Vol. 34 ›› Issue (5): 22-25.

• 动物营养与饲料科学 • 上一篇    下一篇

富含ω-3多不饱和脂肪酸克隆猪制备的关键技术研究

潘登科1,陈红星2,冯书堂1,李奎1,邓继先2
  

  1. 1.中国农业科学院北京畜牧兽医研究所基因与细胞工程室, 北京 100094; 2.军事医学科学院生物工程研究所,北京 100071
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-05-20 发布日期:2007-05-20

Recent Research Advances of Cloning Transgenic Pigs Rich in Omega-3 Fatty Acids

PAN Dengke1, CHENG Hongxing2, FENG Shutang1, LI Kui1, DENG Jixian2
  

  1. 1.Department of Gene and Cell Engineering, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094, China; 2. Institute of Biotechnology,Academy of Military Medical Sciences, Beijing 100071, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-05-20 Published:2007-05-20

摘要: 作者综述了制备富含ω-3多不饱和脂肪酸克隆猪的研究意义和国内外的研究现状,并介绍了自己的研究进展。用化学合成的方法获得了C briggsae的ω-3脂肪酸去饱和酶基因sFat-1,并构建了哺乳动物细胞表达载体。通过显微注射的方法制备了转基因小鼠,sFat-1基因能够在转基因小鼠中产生更多更长链的而且更有价值的DHA以及DPA。在确认sFat-1基因功能的基础上,将载体转染到猪胎儿成纤维细胞,利用阳性的细胞克隆通过核移植方式制备富含ω-3多不饱和脂肪酸克隆猪。

关键词: ω-3脂肪酸去饱和酶基因; 多不饱和脂肪酸; sFat1; 转基因小鼠; 克隆猪 

Abstract: In this paper, the significance and rencent progress of transgenic pigs rich in omega-3 fatty acids are presented. In our study,the sFat-1 gene was chemically synthesized according to the sequence from Caenorhabditis briggssae,and constructed into a mammal expression vector pcDNA3.1sFat-lEGFP. Transgenic sFat-1 gene mice were generated by microinjection of vector into pronuclear zygotes. A modified n-3 fatty acid desaturase gene from C. Briggsae produced high proportion of DHA and DPA in transgenic mice. Based on Function Analysis of n-3 Fatty Acid Desaturase Gene sFat-1, porcine fetal fibroblasts were transfected with vector pcDNA3.1sFat-lEGFP. Positive colony was chosed as donors for nuclear transfer to enucleated MⅡoocytes, cloning transgenic pigs rich in omega-3 fatty acids.

Key words: ω-3 fatty acid desaturase gene; polyunsaturated fatty acids; sFat1; transgenic mouse; Cloning pig 

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