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A series of thiocholesterol-based cationic lipids (TCL) has been designed and synthesized by the attachment of thiocholesterol to a cationic amine via a disulfide bond. TCL can be incorporated into liposomes and used to package DNA into a lipoplex, thereby protecting it from DNase digestion. DNA is rapidly released from the complex in the presence of low concentrations of reducing agents. The lipoplex...
Cationic lipids are widely used for gene delivery, and inclusion of dioleoylphosphatidylethanolamine (DOPE) as a helper lipid in cationic lipid–DNA formulations often promotes transfection efficacy. To investigate the significance of DOPE’s preference to adopt a hexagonal phase in the mechanism of transfection, the properties and transfection efficiencies of SAINT-2/DOPE lipoplexes were compared to...
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