Xinjiang Agricultural Sciences ›› 2020, Vol. 57 ›› Issue (1): 190-196.DOI: 10.6048/j.issn.1001-4330.2020.01.022

Previous Articles    

Effect of Donor Cell on the Efficiency of Ovine Somatic Cell Cloning

GUO Yanhua1, XU Fangye1, LI Yingli2, ZHANG Yiyuan1, WANG Limin1, TANG Hong1, PI Wenhui1, ZHOU Ping1,   

  1. 1. State Key Laboratory of Sheep Genetic Improvement and Healthy Production/ Institute of Animal Husbandry and Veterinary, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi Xinjiang 832000, China;
    2.Shihezi Veterinary Health and Quarantine Institute, Shihezi Xinjiang 832000, China
  • Received:2019-07-25 Online:2020-01-20 Published:2020-02-06
  • Correspondence author: ZHOU Ping(1974-),male, native of Leshan, doctor, professor, mainly engaged in research with somatic cell cloning and embryonic development,(E-mail)zhqxqf@163.com
  • Supported by:
    Supported by the National Major Special Project on New Cultivation for Transgenic Organisms (2016zx08008-001);the National Natural Science Foundation of China (3166090049);Open Ssubject of Key Laboratory of Ovine Genetic Improvement and Healthy Production Laboratory (2013KLS05); the Ear-marked Fund of Academician in Production and Construction of Xinjiang (2014BB023,2016AG022,2016AG021)

供核细胞对绵羊体细胞克隆效率的影响

郭延华1, 徐方野1, 李迎利2, 张译元1, 王立民1, 唐红1, 皮文辉1, 周平1   

  1. 1. 省部共建绵羊遗传改良与健康养殖国家重点实验室/新疆农垦科学院畜牧兽医研究所,新疆石河子 832000;
    2. 石河子市兽医卫生检疫所,新疆石河子 832000
  • 通讯作者: 周平(1974-),男,四川乐山人,研究员,博士,研究方向为绵羊体细胞克隆与胚胎发育,(E-mail)zhpxqf@163.com
  • 作者简介:郭延华(1983-),男,新疆喀什人,助理研究员,硕士,研究方向为绵羊体细胞克隆与表观遗传学,(E-mail)282437680@qq.com
  • 基金资助:
    国家转基因生物新品种培育重大专项(2016zx08008-001);国家自然科学基金(3166090049);绵羊繁育重点实验室开放课题 (2013KLS05);新疆生产建设兵团院士基金专项(2014BB023,2016AG022,2016AG021)

Abstract: 【Objective】 In the production of cloned embryos, nuclear donor cells directly restrict the fusion number and developmental potential of focused embryos. Therefore, the purpose of this study is to investigate the static time, passage times and cycle treatment of donor cells, different cloned lines of donor cells and different sheep cells, and to determine the effect of single factor donor cells on cloned embryos by using reconstructed embryo fusion rate and blastocyst development rate as detection indexes.【Result】 The fusion rates of pelleted cells on 15-30 minutes in operation liquid drop was higher than longtime (about 2 h) pelleted cells after being removed from plates and re-suspension in centrifugal tube (90.10% vs78.84% )(P<0.01). Embryonic development competence had no significant difference (15.58% vs 14.65%)(P>0.05).Thawed fibroblast cells were cultured one to three passages and to full confluency on the plateau phase of cell growth curve 24 h and 48h, fusion rate of cytoplast-donor cell couplets had no significant difference (70.37%、76.03%、71.92% vs 72.97%)(P>0.05),but embryonic development competence rose gradually(5.96%, 9.06%, 15.85% vs 20.16%); Fusion rates and blastocyst rates of cloned embryos had significant difference(P<0.05) or remarkable difference (P<0.01). On the different lines from mono adult fibroblast cell; coincidentally, it was same to the different lines from multiple adult fibroblast cell.【Conclusion】 These data showed that static time of resuspension somatic cells among 15-30 minutes in liquid drop, passage several times and prolong the G1 phase of somatic cell formed a confluent monolayer, and multiple somatic cells were conducive to the production of cloned embryos in ovine.

Key words: donor cell; static time; passage; cell line; cloned embryo

摘要: 【目的】在制作克隆胚胎时,供核细胞直接制约着重构胚的融合数量和发育潜力。研究供核细胞对绵羊体细胞对克隆效率的影响。【方法】从供核细胞的静置时间,研究传代次数与周期处理,供核细胞不同克隆株,不同羊源细胞等,以重构胚融合率和囊胚发育率为检测指标,判定单因素供核细胞对克隆胚胎的影响。【结果】在供核细胞静置时间方面,供核细胞静置15~30 min内完成重构胚制作的融合率极显著高于静置2 h左右的供核细胞组(90.10% vs 78.84%)(P< 0. 01),但囊胚率差异不显著(15.58%vs 14.65%)(P>0.05);在供核细胞传代次数(d1~d3)和汇合期生长时间方面(24 and 48 h ),各组的融合率差异不显著(70.37%、76.03%、71.92% vs 72.97%)(P>0.05),但囊胚率有增高的趋势(5.96%、9.06%、15.85% vs 20.16%);在同一供核细胞不同克隆株方面,供核细胞对融合率和囊胚率存在显著(P<0.05)或极显著(P<0.01)的影响;在不同个体方面,供核细胞株对融合率和囊胚率存在极显著的影响(P<0.01)。【结论】15~30 min内的静置供核细胞、传代3次并延长汇合期细胞生长时间(48 h),多选细胞株更有利于克隆胚的制作。

关键词: 供核细胞, 静置时间, 传代次数, 细胞株, 克隆胚胎

CLC Number: