| abstract |
1) a lipid and a biocompatible hydrophilic polymer directly attached to the PEI backbone, or 2) a polyethyleneimine (lipid attached to the PEI backbone via a biocompatible hydrophilic polymer) Biodegradable cationic lipopolymer consisting of PEI), lipids, and biocompatible hydrophilic polymers. The cationic lipopolymers of the present invention can be utilized for delivery of nucleic acids or anionic bioactive factors to various organs and tissues after local or systemic administration. [Selection figure] None |