Described herein are copolymers, and methods of making and utilizing such copolymers. Such copolymers have at least two blocks: a first block that has at least one unit that is hydrophilic at physiologic pH, and a second block that has hydrophobic groups. This second block further has at least one unit with a group that is anionic at about physiologic pH. The described copolymers are disruptive of a cellular membrane including an extracellular membrane, an intracellular membrane, a vesicle, an organelle, an endosome, a liposome, or a red blood cell. Preferably, in certain instances, the copolymer disrupts the membrane and enters the intracellular environment. In specific examples, the copolymer is endosomolytic.
本文描述的是共聚物以及制造和利用这种共聚物的方法。此类共聚物至少有两个嵌段:第一嵌段至少有一个单元在生理 pH 值下具有亲
水性,第二嵌段具有疏
水基团。第二嵌段至少还有一个单元带有在生理 pH 值下为阴离子的基团。所述共聚物可破坏细胞膜,包括细胞外膜、细胞内膜、囊泡、细胞器、内体、脂质体或红细胞。优选地,在某些情况下,共聚物会破坏膜并进入细胞内环境。在具体例子中,共聚物具有内溶解作用。