The molar ratio of DOTAP and DOPE with PEG-PE is 1:1:0.01 and they were dissolved in chloroform methanol solution (3:1, volume ratio). Cationic liposomes were prepared using an extrusion method.
The Cationic liposomes have high transfection efficiency whether in vitro or in vivo.
The Cationic liposomes have no significant adverse consequences in liposomes treated mice.