Novel microgels, microparticles and related polymeric materials capable of delivering bioactive materials to cells for use as vaccines or therapeutic agents. The materials are made using a crosslinker molecule that contains a linkage cleavable under mild acidic conditions. The crosslinker molecule is exemplified by a bisacryloyl acetal crosslinker. The new materials have the common characteristic of being able to degrade by acid hydrolysis under conditions commonly found within the endosomal or lysosomal compartments of cells thereby releasing their payload within the cell. The materials can also be used for the delivery of therapeutics to the acidic regions of tumors and sites of inflammation.
新型微凝胶、微粒子和相关聚合物材料,能够传递
生物活性物质到细胞,用作疫苗或治疗剂。这些材料使用一种含有在温和酸性条件下可断裂的连接剂分子制成。这种
交联剂分子的例子是双
丙烯酰基
缩醛交联剂。新材料的共同特点是能够在细胞内体液泡或溶酶体内常见的条件下通过酸
水解降解,从而在细胞内释放它们的有效载荷。这些材料还可以用于将治疗剂传递到肿瘤和炎症部位的酸性区域。