Abstract
For long-term gene expression in tissues, we constructed an Epstein–Barr virus (EBV) replicon-based plasmid, pEB, containing the latent viral DNA replication origin (oriP) and EBV nuclear antigen-1 (EBNA-1). When pEB was transferred to human cells (HeLa-S3, HEK 293 and FS 3) and rodent cells (BHK-21) using HVJ-cationic liposomes, luciferase expression was observed in those cells for at least 10 days. Luciferase activity was two to 10 times higher in those cell lines on and after day 3 post-transfection of pEBActLuc compared with plasmids without the EBV replicon sequence. Southern blot analysis showed that the pEB vector luciferase gene was maintained extra- chromosomally in BHK-21 cells. In human cells, transformation was five to 20 times more efficient with pEBc than with pcDNA3, and 18–35% of the introduced EBV replicon plasmid was replicated autonomously. The luciferase gene or lacZ gene was introduced into mouse liver using HVJ–AVE liposomes. Luciferase gene expression was observed for at least 35 days in cells transfected with pEBActLuc, whereas it was not detected on day 14 in cells transfected with pActLuc, which lacks the EBV sequence. By the transfer of pEBActNlacF, the lacZ gene expression rate in hepatocytes was approximately 35 and 12% on days 7 and 35, respectively.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Saeki, Y., Wataya-Kaneda, M., Tanaka, K. et al. Sustained transgene expression in vitro and in vivo using an Epstein–Barr virus replicon vector system combined with HVJ liposomes. Gene Ther 5, 1031–1037 (1998). https://doi.org/10.1038/sj.gt.3300711
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.gt.3300711
Keywords
This article is cited by
-
Liver-directed gene therapy of diabetic rats using an HVJ-E vector containing EBV plasmids expressing insulin and GLUT 2 transporter
Gene Therapy (2006)
-
Genetic modification of hematopoietic stem cells with nonviral systems: past progress and future prospects
Gene Therapy (2005)
-
Prolonged gene expression in mouse lung endothelial cells following transfection with Epstein–Barr virus-based episomal plasmid
Gene Therapy (2003)
-
Activation of p38 MAPK suppresses matrix metalloproteinase-1 gene expression induced by platelet-derived growth factor
Archives of Dermatological Research (2003)
-
Current status and future prospects of gene therapy technologies toward the treatment of intractable skin diseases
Archives of Dermatological Research (2003)