LIPID NANOPARTICLES FOR DRUG DELIVERY SYSTEM CONTAINING CATIONIC LIPIDS

摘要

The present invention provides a lipid nano-particles, which allow nucleic acids to be easily introduced into cells, comprising a cationic lipid represented by formula (I) (wherein: R 1 and R 2 are, the same or different, alkenyl, etc, and X 3 is absent or is alkyl, etc, X 1 and X 2 are hydrogen atoms, or are combined together to form a single bond or alkylene, and Y 1 is absent or anion, L 1 is a single bond, etc, R 3 is alkyl, etc), and the like.