遗传 ›› 2021, Vol. 43 ›› Issue (3): 280-288.doi: 10.16288/j.yczz.20-212

• 技术与方法 • 上一篇    

鸡原始生殖细胞转染条件优化

邹娴1(), 何燕华1, 何静怡1, 王艳1, 舒鼎铭1(), 罗成龙1()   

  1. 1 广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,广东省畜禽育种与营养研究重点实验室,广州 510640
  • 收稿日期:2020-07-07 出版日期:2021-03-16 发布日期:2021-01-29
  • 基金资助:
    广东省自然科学基金项目(2018B030311044);,广东省科技计划项目(2017B020232003);,广东省科技计划项目(2019A050505007);,2020年省级现代农业科技联盟建设共性关键技术创新团队项目(2020KJ106);国家肉鸡产业技术体系岗位科学家项目(CARS-41);科技创新战略专项资金—高水平农科院建设项目(R2017PY-QY007)

Optimization of transfection conditions of chicken primordial germ cells

Xian Zou1(), Yanhua He1, Jingyi He1, Yan Wang1, Dingming Shu1(), Chenglong Luo1()   

  1. 1 State Key Laboratory of Livestock and Poultry Breeding & Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
  • Received:2020-07-07 Online:2021-03-16 Published:2021-01-29
  • Supported by:
    the National Natural Science Foundation of Guangdong Province(2018B030311044);the Science and Technology Program of Guangdong Province(2017B020232003);the Science and Technology Program of Guangdong Province(2019A050505007);2020 Provincial Modern Agricultural Science and Technology Alliance Construction of Common Key Technology Innovation Team Project(2020KJ106);the Earmarked Fund for Modern Agro-Industry Technology Research System(CARS-41);Special Fund for Scientific Innovation Strategy-construction of High Level Academy of Agriculture Science(R2017PY-QY007)

摘要:

为获得鸡原始生殖细胞(primordial germ cells, PGCs)的最佳转染效率,本研究比较不同质粒用量和不同细胞数在3种转染试剂(Lipofectamine 2000、3000和LTX & Plus Reagent)中PGCs的转染效率,利用荧光激活细胞分选技术(fluorescence activated cell sorting technology, FACS)辅助优化Lipofectamine 3000转染试剂,经FACS进一步分选获得带绿色荧光蛋白(GFP)的PGCs,继续培养3周后,移植回注到受体鸡胚中,移植3.5 d后分离性腺拍照观察。结果显示,转染试剂Lipofectamine 3000的转染效率最高,质粒、Lipofectamine 3000转染试剂和PGCs细胞数的配比为3 μg: 4 μL: 0.5×10 4个,转染5 h转染效率最高,达到23.4%,与现有的研究结果相比提高了2倍以上。移植回注PGCs到受体鸡胚中,荧光显微镜观察到鸡胚性腺中有GFP阳性细胞。本研究综合考虑转染试剂、质粒用量和细胞数量的影响因素以优化PGCs的转染条件,为高效制备转基因鸡及基因编辑鸡的研究奠定基础。

关键词: 鸡, 原始生殖细胞, 稳定转染, 脂质体

Abstract:

To improve the transfection efficiency of chicken primordial germ cells (PGCs), the present study evaluated the plasmid dosage and cell number on the efficiencies of three transfection reagents (Lipofectamine 2000, 3000 and LTX & Plus Reagent). PGCs was isolated from embryonic gonads of Huiyang bearded chicken. After 60 days of culture in vitro, the cells were transfected by using Lipofectamine transfection reagents with piggyBac vectors coding for the green fluorescence protein (GFP). PGCs were passaged in culture and fluorescent cells were screened and selected by flow cytometry at three days after transfection. At three weeks post transfection, about 2000 cells were injected into the stage 16 Hamburger and Hamilton (HH) embryos and incubated until stage 30 HH. The results showed that Lipofectamine 3000 was the best for transfection of PGCs. The highest transfection efficiency of PGCs could be achieved with a combination of 3 μg plasmid, 4 μL Lipofectamine 3000 transfection reagent and 0.5×10 4PGCs cells. Flow cytometry analysis showed a 23.4% efficiency of stable transfection of PGCs using Lipofectamine 3000 with piggyBac vector, which was improved 2 times or more over current commonly used methods. After reinjecting PGCs into recipient chicken embryos, GFP-positive cells were observed in the gonads of the recipient chicken embryo by fluorescence microscopy. The study comprehensively evaluated the factors of transfection reagents, plasmid dosage and cell number to optimize the transfection of PGCs, thereby providing a foundation for the efficient preparation of transgenic and gene-edited chickens.

Key words: chicken, primordial germ cells, stable transfection, Lipofectamine