Functional DNA Delivery Enabled by Lipid-Modified Charge-Altering Releasable Transporters (CARTs)
2018
Benner, Nancy L. | Near, Katherine E. | Bachmann, Michael H. | Contag, Christopher H. | Waymouth, Robert M. | Wender, Paul A.
Safe and effective DNA delivery systems are required to enable or enhance clinical strategies and research involving gene therapy and DNA vaccinations. To address this delivery problem, a series of charge-altering releasable transporters (CARTs) with varied lipid content were prepared and evaluated for plasmid DNA (pDNA) delivery into cultured cells. These lipid-modified CART co-oligomers were synthesized in only two steps via sequential organocatalytic ring-opening polymerization of lipid-containing cyclic carbonate monomers and morpholinone monomers. Lipid variations of the CARTs substantially impacted the delivery efficiency of pDNA, with oleyl- and linoleyl-based CARTs showing enhanced performance relative to the commercial transfection agent Lipofectamine 2000 (L2000). The best-performing oleyl CART was carried forward to study stable luciferase transfection with a Sleeping Beauty (SB) transposon system. The oleyl CART outperformed the L2000 positive control with respect to stable transfection efficiency. CART–pDNA complexes represent a new DNA delivery system for research and clinical applications.
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