摘要:
The present invention provides a cationic lipid, which allow nucleic acids to be easily introduced into cells, represented by formula (I) (wherein: R 1 and R 2 are, the same or different, alkenyl, etc, and X 1 and X 2 are hydrogen atoms, or are combined together to form a single bond or alkylene, and X 3 is absent or is alkyl, etc, Y is absent or anion, a and b are, the same or different, 0 to 3, and L 3 is a single bond, etc, R 3 is alkyl, etc, L 1 and L 2 are -O-, -CO-O- or -O-CO-), a composition comprising the cationic lipid and a nucleic acid, and a method for introducing a nucleic acid into a cell by using the composition comprising the cationic lipid and the nucleic acid, and the like.
摘要:
An object of the present invention is to provide a method of easily producing fine particles comprising a lipid, a fatty acid, or a derivative thereof, surface-modified with a water-soluble substance, etc. There are provided a method of producing a fine particles, surface-modified with a water-soluble substance, which contains the process of dispersing fine particles comprising a lipid, a fatty acid, or a derivative thereof, and dissolving or dispersing a surface modifier which is a lipid derivative, a fatty acid derivative, or an aliphatic hydrocarbon derivative of a water-soluble substance, in a liquid containing a polar organic solvent, and the like.