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Proc Natl Acad Sci U S A. 1996 April 16; 93(8): 3176–3181. | PMCID: PMC39578 |
A serum-resistant cytofectin for cellular delivery of antisense oligodeoxynucleotides and plasmid DNA. J G Lewis, K Y Lin, A Kothavale, W M Flanagan, M D Matteucci, R B DePrince, R A Mook, Jr, R W Hendren, and R W Wagner Gilead Sciences, Foster City, CA 94404, USA. Abstract Development of antisense technology has focused in part on creating improved methods for delivering oligodeoxynucleotides (ODNs) to cells. In this report, we describe a cationic lipid that, when formulated with the fusogenic lipid dioleoylphosphatidyliethanolamine, greatly improves the cellular uptake properties of antisense ODNs, as well as plasmid DNA. This lipid formulation, termed GS 2888 cytofectin, (i) efficiently transfects ODNs and plasmids into many cell types in the presence or absence of 10% serum in the medium, (ii) uses a 4- to 10-fold lower concentration of the agent as compared to the commercially available Lipofectin liposome, and (iii) is > or = 20-fold more effective at eliciting antisense effects in the presence of serum when compared to Lipofectin. Here we show antisense effects using GS 2888 cytofectin together with C-5 propynyl pyrimidine phosphorothioate ODNs in which we achieve inhibition of gene expression using low nanomolar concentrations of ODN. This agent expands the utility of antisense ODNs for their use in understanding gene function and offers the potential for its use in DNA delivery applications in vivo. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (1.7M), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References. Images in this article Click on the image to see a larger version. These references are in PubMed. This may not be the complete list of references from this article. - Wagner RW. Gene inhibition using antisense oligodeoxynucleotides. Nature. 1994 Nov 24;372(6504):333–335. [PubMed]
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