畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (6): 1266-1271.doi: 10.11843/j.issn.0366-6964.2016.06.024

• 研究简报 • 上一篇    下一篇

CRISPR/Cas技术可有效介导家鸡基因敲除

左其生,王颖洁,赵瑞丰,程少泽,汪怡临,靳锴,王飞,纪艳芹,路镇宇,张文慧,张亚妮*,李碧春*   

  1. (扬州大学动物科学与技术学院,扬州 225009)
  • 收稿日期:2015-10-08 出版日期:2016-06-23 发布日期:2016-06-23
  • 通讯作者: 李碧春,教授,博士,主要从事动物胚胎工程与遗传工程研究,E-mail:yubcli@yzu.edu.cn;张亚妮,副教授,博士,主要从事动物胚胎工程与遗传工程研究,E-mail:ynzhang@yzu.edu.cn
  • 作者简介:左其生(1992-),男,江苏盐城人,博士生,主要从事动物胚胎工程与遗传工程研究,E-mail:744366503@qq.com
  • 基金资助:

    国家自然科学基金(31301959;31272429;31472087);高等学校博士学科点专项科研基金资助课题(20123250120009);中国博士后基金(2012M511326;2014T70550);江苏高校优势学科建设工程资助项目;大学生创新创业训练计划项目(201411117033Z)

CRISPR/Cas Techniques Can Knockout the Gene of Chicken Effectively

ZUO Qi-sheng,WANG Ying-jie,ZHAO Rui-feng,CHENG Shao-ze,WANG Yi-lin,JIN Kai,WANG Fei,JI Yan-qin,LU Zhen-yu,ZHANG Wen-hui,ZHANG Ya-ni*,LI Bi-chun*   

  1. (College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China)
  • Received:2015-10-08 Online:2016-06-23 Published:2016-06-23

摘要:

本研究旨在家鸡上建立一种高效、稳定的基因组定点编辑技术体系,实现目的基因定点敲除,为后续家鸡基因编辑提供操作依据。基于NCBI数据库提供的CDS序列克隆C2EIP (chr2,Expression In PGC) 基因全长,并根据基因序列中APM的位置设计特异性gRNA1、gRNA2和gRNA3,并构建cas9/gRNA载体;将设计好的cas9/gRNA转染状态良好的DF-1,利用Luciferase SSA重组检测法、T7E1酶切法以及TA克隆测序法检测gRNA在DF-1细胞中基因的敲除效率。Luciferase SSA重组检测结果表明,只有cas9/gRNA3载体具有基因敲除活性,荧光活性比对照组高两倍,T7E1酶切结果显示cas9/gRNA3基因的敲除活性为27%,TA克隆测序结果表明,30个测序菌液中有8个菌液出现不同数目的碱基缺失或增加,初步估计基因敲除效率为26%。通过本研究在家鸡中初步建立了cas9介导的基因敲除技术,该技术能够稳定的在鸡的细胞DF-1上介导基因敲除。

Abstract:

This study aimed to establish a highly efficient and stable gene editing technique mediated by CRISPR/Cas to knock out the targeted gene,and explore its application in chicken preliminarily,and to provide the operation basis for the subsequent poultry genetic edition.We cloned the full-length of C2EIP (chr2,Expression in PGC) gene according to sequence in NCBI Database,and designed 3 gRNAs named gRNA1,gRNA2 and gRNA3 based on the location of APM in the sequence to construct the cas9/gRNA vector.SSA activity assay,T7E1 digestion method and sequencing of TA cloning were used to detect the knock-out efficiency of the gRNA after the cas9/gRNA vector transfected into DF-1.Results of SSA activity assay showed that only cas9/gRNA3 vector could knock out the gene effectively,fluorescence activity which transfected cas9/gRNA3 was twice higher than the control group;Result of T7E1 digestion showed that activity of cas9/gRNA3 was 27%,sequencing of TA cloning results showed there were 8 mutational samples in 30 samples,and the efficiency of gene-knockout was 26%.In this study we established the technology of gene knockout mediated by CRISPR/Cas in chicken,which can be used to konck out genes in DF-1 stably.

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