›› 2013, Vol. 40 ›› Issue (4): 121-124.

• 生理生化 • 上一篇    下一篇

王不留行对奶牛乳蛋白合成信号转导通路的影响

孟海洋, 孙晓旭, 王立娜, 林叶, 袁肖寒, 李庆章, 高学军   

  1. 东北农业大学,乳品科学教育部重点实验室,黑龙江哈尔滨 150030
  • 收稿日期:2012-10-22 出版日期:2013-04-20 发布日期:2013-04-19
  • 通讯作者: 高学军,男,博士,教授,博士生导师,从事乳业生物技术领域的研究。E-mail:gaoxj5390@sina.com E-mail:gaoxj5390@sina.com
  • 作者简介:孟海洋(1988-),男,河南人,硕士生,研究方向:泌乳生物学与乳腺功能调控。
  • 基金资助:
    国家重点基础研究发展规划(973)项目(2011CB100804)。

Effect of Vaccaria segetalis on Cellular Signal Transduction Pathway Associated with Milk Protein Synthesis in Dairy Cow

MENG Hai-yang, SUN Xiao-xu, WANG Li-na, LIN Ye, YUAN Xiao-han, LI Qing-zhang, GAO Xue-jun   

  1. Key Laboratory of Dairy Science, Ministry of Education,Northeast Agricultural University,Harbin 150030,China
  • Received:2012-10-22 Online:2013-04-20 Published:2013-04-19

摘要: 为确定王不留行对奶牛乳蛋白合成信号转导通路的影响,本试验通过水浸提方法制备王不留行提取液,采用Western blotting方法分别检测经王不留行水浸提液、雌激素及催乳素处理的泌乳期奶牛乳腺上皮细胞中乳蛋白合成信号分子的表达变化。结果显示,王不留行水浸提液、雌激素及催乳素都可以促进p-STAT5、p100、GAS、S6K1及p-mTOR的表达,进而促进乳蛋白合成,且添加蛋氨酸可以促进这一作用。提示,王不留行具有和雌激素、催乳素相似的作用,并在转录和翻译水平调节泌乳基因表达。

关键词: 王不留行; 蛋氨酸; 雌激素; 催乳素; 奶牛; 信号转导通路; 乳蛋白

Abstract: To study the effect of Vaccaria segetalis on cellular signal transduction pathway associated with milk protein synthesis in dairy cow,water extraction of Vaccaria segetalis was prepared.Western blotting was used to study the changes of the signal molecules associated with milk protein synthesis of dairy cow mammary gland epithelial cells (DCMECs), treated with estrogen (ER), prolactin (PRL) and Vaccaria segetalis. The results showed that the Vaccaria segetalis extraction liquid, ER and PRL could promote milk protein synthesis and up-regulate the expression of p-STAT5,p100,GAS,S6K1 and p-mTOR, furthmore, methionine could enhance this action. These datas suggested that Vaccaria segetalis had a similar role with ER/PRL and up-regulated expression of the genes of DCMECs for lactation on the translational and transcriptional level.

Key words: Vaccaria segetalis; methionine; estrogen; prolactin; dairy cow; signal transduction pathway; milk protein

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