畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (8): 1282-1287.doi: 10.11843/j.issn.0366-6964.2014.08.011

• 遗传繁育 • 上一篇    下一篇

外源Wnt3a对体外培养奶牛乳腺上皮细胞数量及Frizzled 1受体和β-catenin表达的影响

崔亚利1,孙海云1,李建国2*,高艳霞2,赵艳姣1,李三吓1   

  1. (1.河北农业大学动物医学院,保定 071001; 2.河北农业大学动物科技学院,保定 071001 )
  • 收稿日期:2014-01-25 出版日期:2014-08-23 发布日期:2014-08-23
  • 通讯作者: 李建国,教授,E-mail:jgliauh@sohu.com
  • 作者简介:崔亚利(1970-),女,河北保定人,副教授,博士,主要从事动物组织胚胎学研究,E-mail:cuiyalidk@hebau.edu.cn,Tel:0312-7528472
  • 基金资助:

    现代农业产业技术体系建设专项资金项目(CARS-37)

Effect of Exogenous Wnt3a on Mammary Cell Number in Cow and the Expression of Frizzled 1 Receptor and β-catenin

CUI Ya-li1,SUN Hai-yun1,LI Jian-guo2*,GAO Yan-xia2,ZHAO Yan-jiao1,LI San-xia1   

  1. (1.College of Veterinary Medicine,Agricultural University of Hebei,Baoding 071001,China;2.College of Animal Science and Technology,Agricultural University of Hebei,Baoding 071001,China)
  • Received:2014-01-25 Online:2014-08-23 Published:2014-08-23

摘要:

旨在研究外源性重组Wnt3a蛋白对奶牛乳腺组织中上皮细胞数量及其Wnt信号通路中Frizzled 1受体和β-catenin mRNA表达的影响。采用组织块法培养奶牛乳腺上皮细胞,Western-blot方法对培养液中的β-酪蛋白进行鉴定。待组织块贴壁后,向培养液中分别加入0、10、25和50 ng•mL-1的Wnt3a蛋白,并收集培养至10 d的细胞培养液和细胞。荧光定量PCR检测细胞中Frizzled 1受体和β-catenin mRNA的表达量。结果表明:50 ng•mL-1的Wnt3a蛋白对增加乳腺上皮细胞数量的作用较明显,Frizzled 1受体 mRNA表达量显著增加,β-catenin mRNA表达量与对照组间没有差异。结果提示,外源Wnt 3a能够影响体外培养奶牛乳腺上皮细胞Frizzled 1受体表达量,增加乳腺上皮细胞的数量,提示Wnt信号通路可能参与乳腺组织生长发育的调控。

Abstract:

This experiment was aimed at studying the effects of exogenous Wnt3a on bovine mammary epithelial cell (BMEC) number and the expression of Frizzled 1 receptor and β-catenin.BMEC was cultured by adherent tissue culture.β-casein of culture medium was detected by Western-blot.BMEC was cultured in medium with 0,10,25 and 50 ng•mL-1 Wnt3a separately,and then the BMEC and culture medium at 10 days were collected.The expression of Frizzled 1 receptor and β-catenin mRNA was checked by real time RT-PCR.The results showed that cell numbers in 50 ng•mL-1 Wnt3a group were significantly higher than those of control group.The expression of Frizzled 1 receptor significantly increased,and there was not much difference in β-catenin expression between control group and Wnt3a group.It was concluded that Wnt3a exerts effects on the expression of Frizzled 1 receptor,moreover,promotes the number of BMEC.Current evidence suggested that Wnt signal played roles in the regulation of mammary development.

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