The invention provides immunoconjugates of Formula I comprising a cell-binding agent linked by conjugation to one or more immunostimulatory moieties where the linker is a substrate for elastase. The invention also provides immunostimulant intermediate compositions comprising a reactive functional group. Such intermediate compositions are suitable substrates for formation of the immunoconjugates through a linker or linking moiety. The invention further provides methods of treating cancer with the immunoconjugates.
本发明提供了一种公式I的免疫偶联物,包括一个细胞结合剂通过偶联与一个或多个免疫刺激分子相连,其中连接器是
弹性蛋白酶的底物。本发明还提供了一种包含反应性功能基团的免疫刺激中间体组合物。这样的中间体组合物适合作为通过连接器或连接部分形成免疫偶联物的底物。本发明进一步提供了使用免疫偶联物治疗癌症的方法。