Provided are a micelle composition for nucleic acid delivery using a temperature-sensitive polymer, and a method for producing the micelle. For example, provided is a polyion complex comprising a temperature-sensitive copolymer and a nucleic acid, wherein the temperature-sensitive copolymer comprises a cationic block and a temperature-sensitive block, the cationic block optionally carrying a hydrophilic block linked thereto, and the polyion complex is obtained by mixing the temperature-sensitive copolymer with the nucleic acid under temperature conditions equal to or lower than the lower critical solution temperature (LCST) of the temperature-sensitive copolymer.
本发明提供了一种利用温敏聚合物递送核酸的胶束组合物,以及生产该胶束的方法。例如,提供了一种由感温共聚物和核酸组成的多离子复合物,其中感温共聚物由阳离子嵌段和感温嵌段组成,阳离子嵌段可选择带有与其相连的亲
水嵌段,多离子复合物是通过在等于或低于感温共聚物的下临界溶液温度(LCST)的温度条件下将感温共聚物与核酸混合而得到的。