畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (1): 207-212.doi: 10.11843/j.issn.0366-6964.2016.01.028

• 研究简报 • 上一篇    

利用CRISPR-Cas9系统定点突变猪MSTN基因的研究

张冬杰,刘娣*,张旭,汪亮,杨国伟   

  1. (黑龙江省农业科学院畜牧研究所,哈尔滨 150086)
  • 收稿日期:2015-01-07 出版日期:2016-01-23 发布日期:2016-01-23
  • 通讯作者: 刘娣,教授,E-mail:liudi1963@163.com
  • 作者简介:张冬杰(1980-),女,黑龙江桦南人,副研究员,博士,主要从事猪分子遗传学研究,Tel:0451-87502330,E-mail:djzhang8109@163.com
  • 基金资助:

    哈尔滨市科技局项目(2013RFQYJ037)

Study of Pig MSTN Gene Point Mutation Based on the CRISPR-Cas9 System

ZHANG Dong-jie,LIU Di*,ZHANG Xu,WANG Liang,YANG Guo-wei   

  1. (Institute of Animal Husbandry,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)
  • Received:2015-01-07 Online:2016-01-23 Published:2016-01-23

摘要:

为了今后能够有效的利用CRISPR-Cas9系统进行基因功能研究及转基因动物的培育,本研究将带有绿色荧光蛋白(GFP)和肌肉生长抑制素基因(Myostatin,MSTN)靶序列的CRISPR-Cas9系统转染入PK15细胞系,利用流式细胞仪分离并收集转染成功的阳性细胞,使用PCR扩增结合克隆测序的方法检测和分析CRISPR-Cas9系统的定点突变情况,以评价CRISPR-Cas9系统的作用效果。结果发现,随机挑选的100个阳性克隆中,38个发生了变异,突变效率为38%,其中32个为插入突变,6个为缺失突变。插入突变中突变1(Mutation1)所占比例最高,为47.4%。本研究中CRISPR-Cas9系统的突变效率达到了38%,是目前进行基因组编辑的一个有效工具,推测其突变类型具有一定的偏好性。

Abstract:

In order to more effectively apply CRISPR-Cas9 in researches on gene functions and transgenetic animals,we transfected the PK15 cell line with the CRISPR-Cas9 system containing GFP and Myostatin.Positive cells were separated and collected by flow cytometry.Point mutations were detected and analyzed by PCR and DNA sequencing.The results showed that,among 100 randomly-selected positive clones,the mutation rate was 38%,including 32 insertions and 6 deletions.Mutant 1(one of the insertions) had the highest frequency(47.4%).In this experiment,the mutation rate of CRISPR-Cas9 system is 38% and certain mutation type bias is observed.

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