›› 2012, Vol. 39 ›› Issue (6): 22-26.

• 生物技术 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒主要结构蛋白基因半定量 RT-PCR方法的建立及其在RNA干扰研究中的应用

黄娟, 单虎   

  1. 青岛农业大学动物科技学院,山东青岛 266109
  • 修回日期:2011-11-18 出版日期:2012-06-20 发布日期:2012-07-02
  • 作者简介:黄娟(1977-),女,河南人,博士,副教授,研究方向:动物传染病防制。
  • 基金资助:
    青岛农业大学高层次人才启动基金(6630719);国家科技支撑计划子课题(2009BADB4B04-1)。

Development and Application of Semi-quantitive RT-PCR for the Main Structural Protein Genes of Porcine Reproductive and Respiratory Syndrome Virus

HUANG Juan, SHAN Hu   

  1. College of Veterinary Medicine and Animal Science, Qingdao Agricultural University, Qingdao 266109, China
  • Revised:2011-11-18 Online:2012-06-20 Published:2012-07-02

摘要: 为了建立以GAPDH基因为参照的半定量RT-PCR检测方法,根据PRRSV VR2332株病毒基因组和GAPDH序列设计4对特异性引物,分别扩增GP5、M、NGAPDH基因序列,将shRNA表达质粒和GP5、M、N真核表达质粒共转染HEK293A细胞,应用该法检测了转染孔中GP5、M、N的相对表达量。同管和分管扩增法均建立了以GAPDH基因为参照的半定量RT-PCR检测方法。靶向GP5、M和N蛋白基因的shRNA表达质粒对其各自蛋白的抑制率为36%~69%,其中pSi-N3和pSi-G1抑制效果最为显著。结果表明,建立的半定量RT-PCR可以用于PRRSV主要结构蛋白基因表达水平的检测分析中。

关键词: PRRSV; 结构蛋白; 半定量RT-PCR; RNA干扰

Abstract: Three pairs of primers were designed according to the sequence of PRRSV VR2332 strain to amplify GP5、M and N protein gene respectively, a semi-quantitative RT-PCR method was developed. Different shRNA expressing vectors were cotransfected into HEK293A cells with vectors expressing structural proteins of PRRSV, and the mRNA levels of target gene were assayed by semi-quantitative RT-PCR. The results showed that the mRNA levels of structural proteins were inhibited from 36% to 69%, and pSi-N3 and pSi-G1 showed the strongest inhibition effect. It indicated that the method was suitable for relative quantitation of the main structural proteins of PRRSV.

Key words: PRRSV; structural protein; semi-quantitative RT-PCR; RNA interference

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