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Transgic Ovine Embryos Production by Means of Pronuclear Microinjection
Author(s): 
Pages: 660-664
Year: Issue:  6
Journal: JOURNAL OF INNER MONGOLIA UNIVERSITY(ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS NEIMONGOL)

Keyword:  原核显微注射增强绿色荧光蛋白转基因绵羊胚胎;
Abstract: 体外采集绵羊卵丘卵母细胞复合体,成熟培养24 h,经过体外受精培养17 h,比较高速离心对胚胎发育的影响;高速离心可以使黑色脂滴甩到一边从而使受精卵原核清晰可见.然后将绵羊乳腺特异表达人肝细胞再生增强因子和真核细胞表达增强绿色荧光蛋白(Enhanced Green fluorescence protein,EGFP)的载体DNA显微注射于绵羊受精卵雄原核中,并将异构胚在SOF液中发育培养.结果表明:高速离心组囊胚率低于对照组,但是没有显著性差异(P》0.05);显微注射外源基因2天后在激光共聚焦显微镜下可见荧光胚胎;PCR检测5个荧光胚胎均可见特异性条带.在原核显微注射生产转基因胚胎中,绿色荧光蛋白可作为标记基因进行早期胚胎筛选,为提高转基因动物移植效率奠定实验基础.
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