畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (9): 1399-1403.doi: 10.11843/j.issn.0366-6964.2014.09.003

• 遗传繁育 • 上一篇    下一篇

appA-MxA基因猪PCR检测灵敏度及环境安全评价研究

刘小丹#,辛磊磊#,樊俊华,孔思远,杨述林*,李奎   

  1. (中国农业科学院北京畜牧兽医研究所 农业部畜禽遗传资源与利用重点开放实验室,北京 100193)
  • 收稿日期:2014-02-26 出版日期:2014-09-23 发布日期:2014-09-23
  • 通讯作者: 杨述林,副研究员,E-mail:yangshulin@caas.cn
  • 作者简介:刘小丹(1989-),女,湖北宜都人,硕士生,主要从事细胞工程与基因工程研究,Tel:010-62818180,E-mail:857414958@qq.com;辛磊磊(1986-),男,山东泰安人,硕士。二者并列为第一作者
  • 基金资助:

    “948”课题(2011-G11);国家科技重大专项(2013ZX08010-003);中国农业科学院科技创新工程(ASTIP-IAS05);国家自然科学基金(31372276)

Analysis on PCR Detection Ability and Environmental Safety Assessment in appA-MxA Co-transgenic Pigs

LIU Xiao-dan#,XIN Lei-lei#,FAN Jun-hua,KONG Si-yuan,YANG Shu-lin*,LI Kui   

  1. (Key Laboratory of Farm Animal Genetic Resource and Utilization of Ministry of Agriculture,Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
  • Received:2014-02-26 Online:2014-09-23 Published:2014-09-23

摘要:

本试验旨在研究转appA-MxA基因猪中PCR检测外源基因的灵敏度及其通过粪便漂移到外界环境中的可能性。根据转基因猪目的基因植酸酶(appA)和抗粘液病毒(MxA)引物对不同浓度梯度的pcDNA-appA-MxA质粒进行PCR检测,评价常规PCR检测目的基因的能力;对适宜浓度的粪便DNA进行PCR检测来评价转appA-MxA基因猪外源基因是否经粪便漂移到环境中。PCR扩增结果表明,在10 μL PCR体系中对CMV-appACMV-MxA基因检测的最低浓度分别为2.4×104和2.4×103拷贝•μL-1。克服粪便PCR抑制反应量的适宜转基因猪粪便DNA检测结果表明,其粪便DNA中不含任何外源基因。本试验结果表明,转appA-MxA基因猪体内的外源基因通过粪便漂移到外界环境中的概率极小,从一定程度上证明了转基因猪不存在环境安全问题。

Abstract:

This experiment was conducted to analyze PCR detection ability of exogenous gene in appA-MxA transgenic pigs and to study the possibility of exogenous gene drifting to the environment through feces.To analyze PCR detection ability of exogenous gene,a series of pcDNA-appA-MxA plasmids 10-fold diluted were amplified by PCR which taking primers designed according to appA and MxA genes in appA-MxA co-transgenic pig.Appropriate fecal DNA in transgenic pigs also be amplified by PCR to detect gene drift between feces and environment.Results of PCR showed that,the minimal concentration of CMV-appA and CMV-MxA in 10 μL PCR system were 2.4×10 and 2.4×103 copy•μL-1,respectively.Detection results of appropriate fecal DNA from transgenic pigs which could overcome PCR inhibition showed that appA and MxA were not existed in feces from appA-MxA co-transgenic pigs.These results indicated that exogenous genes in transgenic pig could hardly be drifted into the environment through feces,and to some extent,transgenic pigs are safe to the environment.

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