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Journal of Biomedical Science

, Volume 4, Issue 4, pp 139–145 | Cite as

Inhibition of the synthesis of proteins needed for Epstein-Barr virus replication by antisense RNA against the zta gene

  • Mei-Ying Liu
  • Jen-Yang Chen
  • Ching-Hwa Ann Tsai
  • Tsuey-Ying Hsu
  • Czau-Siung Yang
Original Paper

Abstract

Antisense RNA complementary to the Epstein-Barr virus (EBV) Zta gene, an immediate-early gene encoding a transactivator, was applied to inhibit EBV protein synthesis during its lytic cycle. A DNA fragment containing the Zta gene sequence was inserted into an expression vector, pMAMneo, in a sense and antisense direction under a dexamethasone-inducible murine mammary tumor virus LTR promoter, resulting in the construction of plasmids pZ(+) and pZ(−), respectively. Synthesis of Zta protein was reduced in pZ(−)-transfected cells upon dexamethasone induction. Because D-form early antigen and DNA polymerase are essential for viral DNA replication, the contents of these two viral proteins were examined. Amounts of the two lytic proteins were observed to be significantly repressed in pZ(−)-transfected cells. In contrast, both proteins were normally expressed in the sense plasmid pZ(+) or cells transfected with vector alone. Above results demonstrate that Zta antisense RNA can reduce the production of Zta protein and the other lytic proteins, possibly resulting in the inhibition of EBV replication.

Key Words

Epstein-Barr virus Antisense RNA Zta 

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Copyright information

© National Science Council 1997

Authors and Affiliations

  • Mei-Ying Liu
    • 1
  • Jen-Yang Chen
    • 1
  • Ching-Hwa Ann Tsai
    • 1
  • Tsuey-Ying Hsu
    • 1
  • Czau-Siung Yang
    • 1
  1. 1.Graduate Institute of Microbiology College of MedicineNational Taiwan University, Number 1, Section 1TaipeiTaiwan (ROC)

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