Peptide-drug conjugates comprising p-aminobenzyl carbamoyl or p-aminobenzolyl carbonate self-immolating linkers are disclosed. The peptide-drug conjugates comprise a peptide moiety that can be cleaved by cellular proteases, bound to the self-immolating linker, which linker is bound to a cytotoxic drug moiety. Upon cleavage of the peptide moiety, the linker self-immolates, releasing the cytotoxic drug in active form. Dimeric structures of the peptide drug conjugates comprising two molecules of cytotoxic drug per conjugate are also disclosed.
本发明揭示了包含p-
氨基苯甲酰基或p-
氨基
苯甲酸酯自解链剂的肽-药物共轭物。该肽-药物共轭物包括可以被细胞
蛋白酶切割的肽基团,与自解链剂结合,该链剂与细胞毒性药物基团结合。在肽基团被切割后,链剂自解,释放出活性形式的细胞毒性药物。本发明还揭示了由两个细胞毒性药物分子组成的肽药物共轭物的二聚体结构。