The present invention relates to an antibody comprising a GlcNAc-S(A)x substituent, wherein S(A)x is a sugar derivative comprising x functional groups A wherein A is independently selected from the group consisting of an azido group, a keto group and an alkynyl group and x is 1, 2, 3 or 4, wherein said GlcNAc-S(A)x substituent is bonded to the antibody via CI of the N-acetylglucosamine of said GlcNAc-S(A)x substituent, and wherein said N-acetylglucosamine is optionally fucosylated. The invention also relates to an antibody-conjugate, in particular to an antibody-conjugate according to the Formula (20) or (20b), wherein AB is an antibody, S is a sugar or a sugar derivative, D is a molecule of interest, and wherein said N-acetylglucosamine is optionally fucosylated (b is 0 or 1). The invention further relates to a process for the preparation of a modified antibody, to a process for the preparation of an antibody-conjugate, and to said antibody-conjugate for use as a medicament. In addition, the invention relates to a kit of parts comprising an azide-modified antibody and a linker-conjugate, wherein said linker-conjugate comprises a (hetero)cycloalkynyl group and one or more molecules of interest.
本发明涉及一种包含 GlcNAc-S(A)x 取代基的
抗体,其中 S(A)x 是包含 x 个官能团 A 的糖衍
生物,其中 A 独立选自由
叠氮基、酮基和炔基组成的组,且 x 为 1、2、3 或 4、其中所述 GlcNAc-S(A)x 取代基通过所述 GlcNAc-S(A)x 取代基的 N-乙酰
葡糖胺的 CI 键合到
抗体上,且所述 N-乙酰
葡糖胺任选被岩藻糖基化。本发明还涉及一种
抗体结合物,特别是涉及一种符合式(20)或(20b)的
抗体结合物,其中 AB 是
抗体,S 是糖或糖衍
生物,D 是相关分子,并且其中所述 N-乙酰
葡糖胺是可选的岩藻糖基化(b 为 0 或 1)。本发明还涉及一种制备修饰
抗体的工艺、一种制备
抗体结合物的工艺以及用作药物的所述
抗体结合物。此外,本发明还涉及一种由
叠氮修饰的
抗体和连接体-共轭物组成的试剂盒,其中所述连接体-共轭物包括一个(杂)环炔基和一个或多个相关分子。