首页> 外国专利> ANTIBODY-CONJUGATES WITH IMPROVED THERAPEUTIC INDEX FOR TARGETING CD30 TUMOURS AND METHOD FOR IMPROVING THERAPEUTIC INDEX OF ANTIBODY-CONJUGATES

ANTIBODY-CONJUGATES WITH IMPROVED THERAPEUTIC INDEX FOR TARGETING CD30 TUMOURS AND METHOD FOR IMPROVING THERAPEUTIC INDEX OF ANTIBODY-CONJUGATES

机译:用于靶向CD30肿瘤的具有改善的治疗指数的抗体-缀合物和改善抗体-缀合物的治疗指数的方法

摘要

The present invention concerns novel and improved antibody-conjugates for targeting CD30. The inventors found that when antibody-conjugates were prepared using a specific mode of conjugation, they exhibit an improved therapeutic index. The mode of conjugation comprises a first step (i) of contacting a glycoprotein comprising 1 - 4 core N-acetylglucosamine moieties with a compound of the formula S(F1)x-P in the presence of a catalyst, wherein S(F1)x is a sugar derivative comprising x functional groups F1 capable of reacting with a functional group Q1, x is 1 or 2 and P is a nucleoside mono- ordiphosphate, and wherein the catalyst is capable of transferring the S(F1)X moiety to the core-GlcNAc moiety, to obtain a modified antibody; and a second step (ii) of reacting the modified antibody with a linker-conjugate comprising a functional group Q1 capable of reacting with functional group F1 and a target molecule D connected to Q1 via a linker L2 to obtain the antibody-conjugate wherein linker L comprises S-Z3-L2 and wherein Z3 is a connecting group resulting from the reaction between Q1 and F1. The invention also relates to use for improving the therapeutic index of an antibody-conjugate and to a method for targeting CD30-expressing cells.
机译:本发明涉及用于靶向CD30的新型和改良的抗体-缀合物。发明人发现,当使用特定的缀合方式制备抗体-缀合物时,它们表现出改善的治疗指数。共轭模式包括第一步(i),在催化剂的存在下,使包含1-4个核心N-乙酰氨基葡糖部分的糖蛋白与式S(F1)xP的化合物接触,其中S(F1)x为包含x个能够与官能团Q1反应的官能团F1的糖衍生物,x是1或2,P是核苷一磷酸或二磷酸酯,并且其中催化剂能够将S(F1)X部分转移至核心-GlcNAc部分,以获得修饰的抗体;第二步(ii),使修饰的抗体与包含能够与官能团F1反应的官能团Q1和经由接头L2连接到Q1的靶分子D的接头缀合物反应,得到抗体缀合物,其中,接头L包含S-Z3-L2,并且其中Z3是由Q1和F1之间的反应产生的连接基团。本发明还涉及用于改善抗体-缀合物的治疗指数的用途和靶向于表达CD30的细胞的方法。

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