畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (5): 733-739.doi: 10.11843/j.issn.0366-6964.2014.05.008

• 遗传繁育 • 上一篇    下一篇

cPouVcNanog基因在鸡胚多能性细胞发育过程中的表达定位

李东升1,2,陈志胜2,王丙云2* ,彭特1,2,陈胜锋2,计慧琴2,陈金顶1*   

  1. (1.华南农业大学兽医学院,广州 510642; 2.佛山科学技术学院生命科学学院,佛山 528231)
  • 收稿日期:2013-12-10 出版日期:2014-05-23 发布日期:2014-05-23
  • 通讯作者: 王丙云,博士,教授,E-mail:bywang63@163.com;陈金顶,博士,教授,E-mail:jdchen@scau.edu.cn
  • 作者简介:李东升(1991-),男,安徽东至人,硕士生,主要从事预防兽医学和鸡胚胎干细胞的研究,E-mail:dong614lds@126.com
  • 基金资助:

    国家自然科学基金(31072101;31201871);广东省自然科学基金(S201101004876;S2012010010526)

Expression and Localization of cPouV and cNanog Genes in the Chicken Embryo Pluripotent Cells Development

LI Dong-sheng1,2, CHEN Zhi-sheng2, WANG Bing-yun2*, PENG Te1,2,CHEN Sheng-feng2, JI Hui-qin2, CHEN Jin-ding1*   

  1. (1.College of Veterinary Medicine,South China Agricultural University,Guangzhou 510642, China;2.School of Life Science,Foshan University,Foshan 528231, China)
  • Received:2013-12-10 Online:2014-05-23 Published:2014-05-23

摘要:

研究cPouVcNanog基因在鸡早期胚胎中的时空表达规律,探索鸡胚早期发育过程中胚胎干细胞的增殖分化规律,为进一步研究2基因在鸡胚早期发育中的作用奠定基础。本试验分别构建了pMD-18T-cPouV和pMD-18T-cNanog重组质粒,制备了地高辛(DIG)标记cPouVcNanog基因的cDNA探针,采用原位杂交的方法检测cPouVcNanog在鸡早期胚胎中的表达模式。结果表明:在原条发生前,cPouVcNanog基因均匀表达于明区。原条期,cPouV基因在原条及其周围表达,cNanog基因则表达于原条周围,原条上未见表达。随着神经板的形成,2基因大量表达于神经板、神经管和脑部周围。待鸡胚发育至14HH阶段,2基因主要集中表达于头部和心等血管富集处,在外周血管中也能检测到其表达信号。综上表明:随着胚胎的发育,能够表达cPouVcNanog基因的多能性干细胞逐渐由中央明区向外周迁移。

Abstract:

Spatio-temporal expression of cNanog and cPouV genes in the early chicken embryos was studied to provide basic information for studing functions of those two genes on chicken embryonic stem cells (CES) self-renewal and differentiation.Digoxigenin(DIG)-labeled cPouV and cNanog probes were produced by cDNA synthesization from the plasmids of pMD-18T-cPouV and pMD-18T-cNanog respectively according to a standard protocol.The expression patterns of cPouV and cNanog in the early chicken embryos were detected using in situ hybridization with the synthesized probes.The results showed that at pre-primitive streak stage,cPouV and cNanog genes were uniformly expressed in the pellucid area of embryos.At primitive streak stage,cPouV genes were strongly expressed in primitive streak and surrounding area.Hybridization signals of cNanog genes were detected only in surrounding area of primitive streak,no signals were detected inside streak.As the neural plate formed,two genes were strongly expressed in the neural plate,neuraltube and the anterior hindbrain/posterior midbrain.Later,at stage 14 HH and subsequently,two genes were strongly expressed in the head,the heart and peripheral vessels.As chicken embryo development,the pluripotent stem cells which can express cPouV and cNanog genes migrated from pellucid area to peripheral area.

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