Amphiphilic derivative of 3-((2-dimethylamino)ethyl(methyl)amino)propionic acid, and use thereof

The invention relates to an amphiphilic derivative of 3-((2-dimethylamino)ethyl(methyl)amino)propionic acid, and a use thereof, and also relates to a liposome prepared from the above amphiphilic compound. The use is the use of the liposome as a drug carrier delivery system. The liposome prepared from the amphiphilic compound has many positive charges in acidic environment, and can be well compounded with gene drug siRNA to form a compound with small particle size and uniform particle size distribution. The amphiphilic compound is electrically neutral in environment with the pH value of 7.4, increases the in vivo stability of the lipid compound and reduces cytotoxicity caused by too many positive charges. The liposome can specifically inhibit gene expression in human non-small cell lung cancer H1299-Pg13 cells in vitro, and can specifically transship fluorescence gene drugs into normal mouse liver cells in vivo.