畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (4): 693-699.doi: 10.11843/j.issn.0366-6964.2016.04.008

• 遗传繁育 • 上一篇    下一篇

脂多糖对体外培养猪颗粒细胞增殖、凋亡和雌二醇分泌的影响

果双双1,李辉2,施振旦2,马卫明1*   

  1. (1.山东农业大学动物科技学院,泰安 271018; 2.江苏省农业科学院畜牧研究所,南京 210014)
  • 收稿日期:2015-09-25 出版日期:2016-04-23 发布日期:2016-04-23
  • 通讯作者: 马卫明,副教授,E-mail: mawm@sdau.edu.cn
  • 作者简介:果双双(1989-),女,山东济南人,硕士生,主要从事动物繁殖内分泌学研究, E-mail: qicaitianping7777@163.com
  • 基金资助:

    江苏省自然科学基金(BK20151365);国家自然科学基金(31402080);江苏省农业科学院基本科研业务专项[ZX(15)4031]

Effects of Lipopolysaccharide on Proliferation,Apoptosis and Estradiol Secretion of in vitro Cultured Porcine Granulosa Cells

GUO Shuang-shuang1,LI Hui2,SHI Zhen-dan2,MA Wei-ming1*   

  1. (1.College of Animal Science and Veterinary Medicine,Shandong Agricultural University,Tai’an 271018,China;2.Institute of Animal Science,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)
  • Received:2015-09-25 Online:2016-04-23 Published:2016-04-23

摘要:

旨在探讨脂多糖(LPS)对猪颗粒细胞增殖、凋亡及雌二醇(E2)分泌的影响。采用不同浓度的LPS(0、500、1 000和2 000 ng•mL-1)处理体外培养的猪颗粒细胞,并测定细胞增殖、凋亡及相关基因FN1、IGF2、IGFBP2、Cyclin D1、Cyclin D2和P27kip的表达,同时对E2的分泌及P450arom的表达进行检测。结果表明,1 000或2 000 ng•mL-1 LPS均可显著促进颗粒细胞增殖、抑制细胞凋亡、提高活细胞百分率(P<0.05)。而500 ng•mL-1 LPS即可促进与细胞生长增殖、周期相关基因FN1(P<0.01),IGF2、IGFBP2(P<0.05),Cyclin D1、Cyclin D2(P<0.01)的表达,抑制阻碍细胞周期的基因P27kipP<0.01)的表达,同时可以通过强烈抑制芳香化酶P450arom基因的表达(P<0.01),显著抑制E2的分泌(P<0.01)。综上表明,LPS可以促进颗粒细胞增殖并抑制细胞凋亡,同时抑制颗粒细胞分泌E2的功能。

Abstract:

 In order to study the effects of Lipopolysaccharide(LPS) on proliferation,apoptosis and estradiol (E2) secretion of porcine granulosa cells.Primary porcine granulosa cells were cultured in vitro and treated by LPS at different concentrations (0,500,1 000 and 2 000 ng•mL-1).Then cell proliferation,apoptosis,secretion of E2 and related gene expressions,FN1,IGF2,IGFBP2,Cyclin D1,Cyclin D2,P27kip and P450arom were determined individually.The results showed that cell proliferation and survival ratio were significantly promoted at LPS concentrations of 1 000 or 2 000 ng•mL-1(P<0.05),on the contrary,cell apoptosis was inhibited.However,gene expression levels of FN1 (P<0.01),IGF2,IGFBP2 (P<0.05),Cyclin D1 and Cyclin D2 (P<0.01) were up-regulated at 500 ng•mL-1 of LPS,P27kip (P<0.01) which hindered cell cycle was inhibited.P450arom gene expression was decreased,resulting the inhibition of E2 secretion when treated by LPS.These results suggested that granulosa cell proliferation could be promoted by LPS,while cell apoptosis and E2 secretion were inhibited.

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