畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (1): 79-84.doi: 10.11843/j.issn.0366-6964.2016.01.011

• 遗传繁育 • 上一篇    下一篇

LPS通过TLR4影响绵羊输卵管上皮细胞SBD-1的表达

李琦,智达夫,延沁,刘默宁,郑欣欣,曹贵方*   

  1. (内蒙古农业大学兽医学院 动物组织胚胎与发育生物学研究室,呼和浩特 010018)
  • 收稿日期:2015-06-02 出版日期:2016-01-23 发布日期:2016-01-19
  • 通讯作者: 曹贵方,教授,博士生导师,E-mail:guifangcao@126.com
  • 作者简介:李琦(1987-),女,呼和浩特人,博士生,主要从事组织胚胎学与分子生物学研究,E-mail:liqi253762@163.com
  • 基金资助:

    国家自然科学基金项目(31360593;31060328);内蒙古自治区科技计划项目(20130317)

LPS Induces SBD-1 Expression via TLR4 in Ovine Oviduct Epithelial Cells

LI Qi,ZHI Da-fu,YAN Qin,LIU Mo-ning,ZHENG Xin-xin,CAO Gui-fang*   

  1. (Center of Histology and Developmental Biology,College of Veterinary Medicine,Inner Mongolia Agricultural University,Huhhot 010018,China)
  • Received:2015-06-02 Online:2016-01-23 Published:2016-01-19

摘要:

旨在研究脂多糖(LPS)对绵羊输卵管上皮细胞β-防御素-1(SBD-1)表达的影响及其调控途径,本研究设置不同浓度(10 ng•mL-1、50 ng•mL-1、100 ng•mL-1、200 ng•mL-1、1 mg•mL-1)LPS,分别作用不同时间(0、1、3、6、12和24 h),检测绵羊输卵管上皮细胞SBD-1和Toll样受体-4 (TLR4) mRNA表达水平,通过免疫组化检测SBD-1表达定位,并进一步通过TLR4阻断试验来证实TLR4介导LPS引起SBD-1表达。结果表明,SBD-1蛋白表达于输卵管上皮细胞。LPS以浓度和时间依赖方式影响绵羊输卵管上皮细胞中SBD-1的表达,且100 ng•mL-1 LPS在作用12 h后,SBD-1的表达水平达到最高。阻断试验表明,TLR4介导LPS对SBD-1的表达调控。综上表明,LPS可以影响绵羊输卵管上皮细胞表达SBD-1,且该过程通过TLR4介导。

关键词: 输卵管, 脂多糖, 绵羊β-防御素-1, Toll样受体-4

Abstract:

 The aim of this study was to explore the effect of lipopolyscharride (LPS) on induction of sheep beta defensin-1 (SBD-1) in ovine oviduct epithelial cells (OOECs).In this study,OOECs were cultured and then exposed to LPS for up to 24 hours,with a range of concentrations (10 ng•mL-1-1 mg•mL-1).qRT-PCR was performed to detect SBD-1 mRNA.The results showed that LPS stimulated the expression of SBD-1 in a time-(maximal at 12 hours) and concentration-(maximal at 100 ng•mL-1) dependent manner.Moreover,IHC staining showed that SBD-1 was mainly expressed in epithelial cells.Importantly,TLR4 was detected in OOECs and stimulated by LPS.LPS induced SBD-1 mRNA expression was markedly inhibited by blockage of TLR4 activity using anti-TLR4 antibody.In conclusion,these results suggest that LPS might induce the expression of SBD-1 in the ovine oviduct epithelial cells,and the expression are mediated by TLR4.

Key words: oviduct, lipopolyscharride, sheep β-defensin-1 (SBD-1), toll-like receptor 4 (TLR4)

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