中国畜牧兽医

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胰岛素样生长因子-Ⅰ、肝细胞生长因子、转化生长因子-β1、干扰素-γ对奶牛乳腺上皮细胞增殖活性的影响

李莹莹1,夏小静2,吴云娣2,何伯萍2,闫新武1,高媛媛1,王玉平1,雷连成2   

  1. 1.吉林大学动物科学学院,吉林长春 130062;2.吉林大学动物医学学院,吉林长春 130062)
  • 收稿日期:2013-09-28 出版日期:2014-04-20 发布日期:2014-05-27
  • 通讯作者: 雷连成,教授,博士生导师。E-mail:leiliancheng@163.com
  • 作者简介:李莹莹(1988—),女,湖北人,硕士,研究方向:奶牛泌乳生物学。
  • 基金资助:

    国家重点基础研究发展计划(“973”计划)资助(2011CB100805)。

Effects of IGF-Ⅰ, HGF, TGF-β1, IFN-γ on Proliferation of Bovine Mammary Epithelial Cells

LI Ying-ying1, XIA Xiao-jing2, WU Yun-di2, HE Bo-ping2, YAN Xin-wu1, GAO Yuan-yuan1, WANG Yu-ping1, LEI Lian-cheng2   

  1. 1.College of Animal Science, Jilin University, Changchun 130062, China;2.College of Veterinary Medicine, Jilin University, Changchun 130062, China)
  • Received:2013-09-28 Online:2014-04-20 Published:2014-05-27

摘要: 本试验应用组织块培养和差速消化法获取原代奶牛乳腺上皮细胞,免疫荧光鉴定正确后MTT法评价不同浓度的胰岛素样生长因子-Ⅰ(insulin-like growth factor-Ⅰ,IGF-Ⅰ)、肝细胞生长因子(hepatocyte growth factor, HGF)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)、干扰素-γ (interferon-γ,IFN-γ)对奶牛乳腺上皮细胞体外增殖的影响。结果表明,IGF-Ⅰ、HGF分别在 10~200和0.1~100 ng/mL对乳腺上皮细胞的增殖呈正相关,而TGF-β1(2.5~100 ng/mL)、IFN-γ(5~160 ng/mL)则剂量依赖性地抑制乳腺上皮细胞增殖。提示,IGF-Ⅰ、HGF均能促进奶牛乳腺上皮细胞的体外增殖,该作用在一定浓度范围内有剂量依赖性;TGF-β1、IFN-γ对乳腺上皮细胞的增殖作用出现剂量抑制效应。

关键词: 细胞因子; 乳腺上皮细胞; 原代培养; 细胞增殖

Abstract: This experiment was conducted to investigate the regulation of insulin-like growth factor-Ⅰ(IGF-Ⅰ), hepatocyte growth factor (HGF), transforming growth factor-β1 (TGF-β1) and interferon-γ (IFN-γ) in the growth of bovine mammary epithelial cells in vitro.The bovine mammary epithelial cells were isolated by explant culture technique and differential adhesion method and identified by immunochemistry.The effect of cytokines regulating the growth of bovine mammary epithelial cells in different concentrations was measured by MTT.The results showed that when the concentrations of IGF-Ⅰ and HGF were 10 to 200 and 0.1 to 100 ng/mL, respectively, the growth of bovine mammary epithelial cells increased. While when the concentrations of TGF-β1 and IFN-γ were 2.5 to 100 and 5 to 160 ng/mL, respectively, the growth of bovine mammary epithelial cells decreased in a dose-dependent manner.These results indicated that IGF-Ⅰ and HGF could upregulate the proliferation of bovine mammary epithelial cells in vitro in a dose-dependent manner.TGF-β1 and IFN-γ could inhibit the proliferation of bovine mammary epithelial cells in vitro.

Key words: cytokine; mammary epithelial cells; primary culture; cell proliferation