›› 2013, Vol. 40 ›› Issue (11): 16-20.

• 生物技术 • 上一篇    下一篇

绵羊羊水干细胞外源基因高效转染及快速筛选方法的建立

王凤武1,2, 郝斐3, 魏著英3, 刘东军3, 荣威恒2   

  1. 1. 内蒙古农业大学动物科学学院, 内蒙古呼和浩特 010018;
    2. 内蒙古农牧业科学院, 内蒙古呼和浩特 010031;
    3. 内蒙古大学国家动物转基因技术中心, 内蒙古呼和浩特 010021
  • 收稿日期:2013-04-18 出版日期:2013-11-20 发布日期:2013-12-19
  • 作者简介:王凤武(1973-),男,内蒙古人,博士,研究方向:分子生物学与牛羊育种。
  • 基金资助:
    内蒙古自然科学基金(2011MS0410)。

Exogenous Gene Efficient Transfection in vitro and Rapid Screening of Sheep Amniotic Fluid Stem Cells

WANG Feng-wu1,2, HAO Fei3, WEI Zhu-ying3, LIU Dong-jun3, RONG Wei-heng2   

  1. 1. College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Inner Mongolia Academy of Agricultural and Animal Husbandry, Hohhot 010031, China;
    3. The National Animal Transgenic Technology Centre, Inner Mongolia University, Hohhot 010021, China
  • Received:2013-04-18 Online:2013-11-20 Published:2013-12-19

摘要: 试验旨在建立绵羊羊水来源多潜能干细胞(amniotic fluid-derived stem cells,AFSC)外源基因高效转染及快速筛选方法,同时保持其多潜能特性。采用脂质体法,以pCMV-DsRed为报告质粒,转染绵羊AFSC,36 h后,流式细胞仪分析外源基因的瞬时转染效率为69.17%。以浓度为6 mg/mL的G418筛选5 h获得纯化转基因绵羊AFSC单克隆。转基因绵羊AFSC RT-PCR检测表达Oct-4、SSEA-1,体外悬浮培养可形成类胚体。结果表明,转基因标记绵羊AFSC保持了发育全能性的潜能,构建的转基因绵羊AFSC可以示踪性研究其在体内的分化路径和最终宿主。

关键词: 绵羊; 羊水干细胞; 报告质粒; 基因转染; 高效转染; 快速筛选

Abstract: The study was designed to establish a method for the efficient gene transfection in vitro and rapid screening of amniotic fluid-derived stem cells (AFSC), while maintaining their pluripotency. pCMV-DsRed was used as the reporter plasmid to transfect amniotic fluid-derived stem cells by liposome. 36 h later, transient transfection efficiency was 69.17% by flow cytometry. The purified transgenic sheep AFSC monoclones were obtained through the selection of G418 at the concentration of 6 mg/mL after the treatment of 5 h. The transgenic sheep AFSC was positive for Oct-4, SSEA-1 by RT-PCR. AFSC could also formed embryoid bodies by in vitro suspension culture. The results implied a possibility that the transgenic sheep AFSC could be used to track down in vivo differentiation path and the definitive host.

Key words: sheep; amniotic fluid stem cells; reporter plasmid; gene transfection; efficient transfection; rapid screening

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