›› 2010, Vol. 37 ›› Issue (3): 78-83.

• 生物技术 • 上一篇    下一篇

H5N1亚型禽流感病毒和新城疫病毒感染鸡胚成纤维细胞IFN-β基因的动态表达

高艳1,2, 杨松沛3, 雷小文1,2, 岳华1,2, 李明义4, 汤承1,2   

  1. (1.西南民族大学生命科学与技术学院, 成都 610041; 2.动物医学四川省高校重点实验室, 成都 610041;3.四川省兽药监察所, 成都 610041; 4.中国动物卫生与流行病学中心, 青岛 266032)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-20 发布日期:2010-03-20
  • 通讯作者: 汤承

The Dynamics of IFN-β mRNA Expression in Chick Embryo Fibroblast Infected with H5N1 Avian Influenza Virusand Virulent Newcastle Disease Virus

GAO Yan1,2, YANG Song-pei3, LEI Xiao-wen1,2, YUE Hua1,2, LI Ming-yi4, TANG Cheng1,2   

  1. (1.College of Life Science and Technology, Southwest University for Nationalities, Chengdu 610041, China; 2.Sichuan Province Key Laboratory of Veterinary Medicine, Chengdu 610041, China; 3.Sichuan Province Institute of Veterinary Drugs Control,Chengdu 610041, China; 4.China Animal and Epidemiology Center, Qingdao 266032, China )
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-20 Published:2010-03-20
  • Contact: TANG Cheng

摘要: 根据鸡β-干扰素(ChIFN-β)基因保守序列设计引物建立了检测鸡IFN-β mRNA表达水平的荧光定量RT-PCR (RRT-PCR)方法,并对H5N1亚型禽流感病毒(AIV)和新城疫病毒强毒株(vNDV)感染后3、6、12、24、30 h的鸡胚成纤维细胞(CEF)中IFN-β mRNA表达水平进行了检测。结果显示,建立的RRT-PCR特异性好,对鸡IFN-β mRNA的扩增效率为94.18%,线性范围为10-8~10-3,相关系数为0.992,最低能检出48拷贝/反应。AIV在感染CEF后6、12 h显著抑制IFN-β mRNA的表达,24 h开始诱导IFN-β mRNA表达,30 h时IFN-β mRNA水平显著升高;vNDV在感染CEF后的24 h内显著抑制IFN-β mRNA的表达,30 h时则显著诱导 IFN-β mRNA表达。本试验结果为进一步研究H5N1和NDV与机体的相互作用提供了有价值的信息。 

关键词: β-干扰素; 荧光定量RT-PCR; 禽流感病毒; 新城疫病毒; 鸡胚成纤维细胞

Abstract: According to the chicken’s IFN-β (ChIFN-β) gene sequences, a pair of primers was designed for developing a SYBR Green I quantitative real-time reverse-transcription PCR (RRT-PCR) to detect the IFN-β gene of chicken, and the expression levels of IFN-β mRNA in chick embryo fibroblast (CEF) at 3, 6, 12, 24 and 30 h after infected with H5N1 avian influenza virus (AIV) and virulent Newcastle disease virus (vNDV) were detected. The results showed that the assay was specific for ChIFN-β gene with amplification efficiency of 94.18%, and the linear range was 10-8 to 10-3 with good correlation coefficient of 0.992, as well as the detection limit reached to 48 copies per reaction. The expression of IFN-β mRNA in CEF infected with AIV H5N1 and vNDV showed, the expression of IFN-β mRNA in CEF was suppressed significantly at 6 and 12 h, then induced at 24 h and significantly induced at the 30 h after infected with AIV H5N1; the IFN-β mRNA expression of CEF was suppressed significantly at 24 h and induced significantly at 30 h after infected with vNDV. The results provided valuable information for further researching the interaction of H5N1/NDV and organism.

Key words: interferon-β; real-time RT-PCR; avian influenza virus; Newcastle disease virus; chick embryo fibroblast

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