畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (12): 2000-2005.doi: 10.11843/j.issn.0366-6964.2014.12.013

• 预防兽医 • 上一篇    下一篇

新型脱氧核酶ASON-Bulge-DNAzyme靶向M蛋白抑制PRRSV在MARC-145细胞中的复制

李红,刘成倩,高骏,易建中*   

  1. (上海市农业科学院畜牧兽医研究所,上海 201106)
  • 收稿日期:2014-04-25 出版日期:2014-12-23 发布日期:2014-12-23
  • 通讯作者: 易建中,Tel:021-62204612,E-mail:yijianzhong@yahoo.com
  • 作者简介:李红(1983-),女,山东烟台人,助理研究员,博士,主要从事动物分子生物学和免疫学的研究,Tel:021-62204612,E-mail:lihong20061029@163.com
  • 基金资助:

    上海市农业科学院青年基金项目(农科QJ08)

Inhibition of Porcine Reproductive and Respiratory Syndrome Virus Replication by M-ASON-Bulge-DNAzyme in MARC-145 Cells

LI Hong,LIU Cheng-qian,GAO Jun,YI Jian-zhong*   

  1. (Institute of Animal Husbandry & Veterinary Science,Shanghai Academy of Agricultural Sciences,Shanghai 201106,China)
  • Received:2014-04-25 Online:2014-12-23 Published:2014-12-23

摘要:

在细胞水平探讨新型脱氧核酶(ASON-Bulge-DNAzyme)对猪繁殖与呼吸综合征病毒(PRRSV)的抑制效果。针对PRRSV JX株M基因设计了2个新型的脱氧核酶,经RT-PCR、TCID50、CPE、间接免疫荧光试验(IFA)对新型脱氧核酶抑制PRRSV复制效果进行评价。结果针对M基因M-1新型脱氧核酶表现良好的抑制效果,其抑制效果高达82.7%,M-2新型脱氧核酶抑制效率最高可达到83.9%,研究表明M基因的这2个位点可能是PRRSV复制所必需的。本研究对今后PRRSV复制及基因组功能研究、抗病毒药物开发和PRRSV的致病机制及防制研究有重要意义。

Abstract:

This study aimed to explore,on the cell level,the possibility of using ASON-Bugle-DNAzyme,as a new genetherapy in inhibiting reproductive and respiratory syndrome virus (PRRSV).Two novel DNAzymes targeting the PRRSV M gene were designed.MARC-145 cells were infected with PRRSV 10 h after the active ASON-Bulge-DNAzymes were delivered,efficiency of ASON-Bulge-DNAzymes were assayed by RT-PCR,TCID50,CPE and indirect immunofluorescence assay (IFA).The experiment successfully derived the active ASON-Bulge-DNAzyme inhibition of PRRSV replication procedure in MARC-145 cells and showed that the two interference target sites may be necessary for PRRSV replication.The outcomes from this study will increase our knowledge and lead to the development of DNAzyme in virus diseases control.The results may be used for future study of PRRSV replication,antiviral therapy and prevention of PRRSV.

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