›› 2009, Vol. 36 ›› Issue (5): 72-74.

• 生物技术 • 上一篇    下一篇

TLR4基因表达水平与沙门氏菌感染关系的研究

李鹏1,2,夏平安1,宋咏梅2,赵桂苹2   

  1. (1.河南农业大学牧医工程学院, 郑州 450002; 2.中国农业科学院北京畜牧兽医研究所, 北京 100193)
  • 收稿日期:1900-01-01 修回日期:2009-02-10 出版日期:2009-05-20 发布日期:2009-05-20
  • 通讯作者: 赵桂苹

Study on the Relationship between Chicken Toll Like Receptor 4 Expression Level and Salmonella Infection

LI Peng1,2XIA Ping-an1,SONG Yong-mei2, ZHAO Gui-ping2   

  1. (1.Engineering College of Animal Husbandry and Veterinary Science, Henan Agriculture University, Zhengzhou 450002, China; 2.Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China)
  • Received:1900-01-01 Revised:2009-02-10 Online:2009-05-20 Published:2009-05-20
  • Contact: ZHAO Gui-ping

摘要: 为了研究鸡TLR4(toll like receptor 4)基因表达在调控鸡沙门氏菌感染中的作用,80只3日龄SPF鸡按随机分为2组,处理组经口注射鸡白痢沙门氏菌悬液108 CFU/mL 0.50 mL,对照组注射同剂量生理盐水。每个处理组分别在感染后1、3、7和14 d随机取8只鸡处死,迅速取脾脏样品用于RNA提取。采用SYBR GreenⅠ染料实时荧光定量PCR(QPCR),比较处理组和对照组TLR4基因mRNA相对表达量的变化。结果显示,在4个时间点,与对照组相比,处理组TLR4基因高表达,差异显著(P<0.05);尤其在感染后3和7 d,差异达到极显著水平(P<0.01)。结果表明,鸡沙门氏菌感染后,TLR4基因mRNA表达上调,TLR4基因在沙门氏菌感染中发挥重要作用。

关键词: 鸡; TLR4基因; 沙门氏菌; 荧光定量PCR

Abstract: In order to study the role of chicken toll like receptor 4 playing in Salmonella infection, eighty three-day-old specific-pathogen-free chickens were randomly divided into 2 groups. The treatment group chickens were orally inoculated with 0.5 mL of the bacterial suspension containing 108 CFU/mL Salmonella Serovar Pullorum. The control groups were inoculated with 0.5 mL saline. Eight chickens of each group were randomly chosen and killed at day 1, 3, 7 and 14 post infection. Spleen was sampled for RNA extraction. SYBR GreenⅠquantitative real-time PCR method was applied to compare the relative expression quantity of chicken TLR4 gene. The following results were obtained: TLR4 gene expression levels were significantly higher in chickens from treatment group than those in the control group at 4 time points (P<0.05), especially at day 3 and 7 post infection (P<0.01). These results indicated that the expression of chicken TLR4 gene was up-regulated during Salmonella infection.

Key words: chicken; TLR4 gene; Salmonella; real-time PCR

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