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A transient three-plasmid expression system for the production of high titer retroviral vectors

Open access
Soneoka, Yuko, Cannon, Paula M., Ramsdale, Emma E., Griffiths, Joanne C., Romano, Gaetano, Kingsman, Susan M., Kingsman, Alan J.·1995·Nucleic Acids Research

Abstract

We have constructed a series of MLV-based retroviral vectors and packaging components expressed from the CMV promoter and carried on plasmids containing SV40 origins of replication. These two features greatly enhanced retroviral gene expression when introduced into cell lines carrying the SV40 large T antigen. The two packaging components, gag-pol and env, were placed on separate plasmids to reduce helper virus formation. Using a highly transfectable human cell line and sodium butyrate to further increase expression of each component, we achieved helper-free viral stocks of approximately 10(7) infectious units/ml by 48 h after transient co-transfection with the three plasmid components. This system can be used both for the generation of high titer retroviral stocks for transduction and for the rapid screening of a large number of MLV gag-pol or env mutants.

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Metadata

Authors
Soneoka, Y., Cannon, P. M., Ramsdale, E. E., Griffiths, J. C., Romano, G., Kingsman, S. M., & Kingsman, A. J.
Venue
Nucleic Acids Research
Published
1995
Volume
23
Issue
4
Pages
628-633
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2147153603
Cited by
690
References
0
FWCI
9.94
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A transient three-plasmid expression system for the production of high titer retroviral vectors. https://app.cochat.ai/papers/10.1093/nar/23.4.628
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Soneoka, Y., Cannon, P. M., Ramsdale, E. E., Griffiths, J. C., Romano, G., Kingsman, S. M., & Kingsman, A. J. (1995). A transient three-plasmid expression system for the production of high titer retroviral vectors. Nucleic Acids Research. https://doi.org/10.1093/nar/23.4.628

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