Galactose Oxidase Enables Modular Assembly of Conjugates from Native Antibodies with High Drug-to-Antibody Ratios.

Galactose Oxidase Enables Modular Assembly of Conjugates from Native Antibodies with High Drug-to-Antibody Ratios.
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DOI:
10.1002/cssc.202102592
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发表时间:
2022-05-06
期刊:
影响因子:
8.4
通讯作者:
--
中科院分区:
化学2区
文献类型:
--
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最近,Trastuzumab deruxtecan 和 Sacituzumab govitecan 的批准凸显了高载药量抗体偶联物在抗癌治疗中的潜力。这些生物制药方法激发了人们对具有高且明确的药物抗体比(DAR)的生物结合策略的兴趣,特别是对于天然抗体。在此,开发了一种糖工程方法,通过将高选择性酶促半乳糖基化和氧化与双正交串联 Knoevenagel-Michael 加成化学相结合,生成 DAR 高达 8 的抗体药物缀合物。这种四步方法提供了从具有高载药量的天然抗体缀合物的选择性途径,从而说明了如何利用生物催化在温和的反应条件下生产生物药物。 糖工程:从天然抗体合成具有高载药量的抗体-药物偶联物对于生物制药的开发具有很大的意义。在这里,使用半乳糖氧化酶的选择性生物催化和串联 Knoevenagel-Michael 加成偶联化学相结合,以实现高达 8 的分子药物与抗体比率。
The potential of antibody conjugates with high drug loading in anticancer therapy has recently been highlighted by the approval of Trastuzumab deruxtecan and Sacituzumab govitecan. These biopharmaceutical approaches have spurred interest in bioconjugation strategies with high and defined degrees of drug‐to‐antibody ratio (DAR), in particular on native antibodies. Here, a glycoengineering methodology was developed to generate antibody drug conjugates with DAR of up to eight, by combining highly selective enzymatic galactosylation and oxidation with biorthogonal tandem Knoevenagel–Michael addition chemistry. This four‐step approach offers a selective route to conjugates from native antibodies with high drug loading, and thus illustrates how biocatalysis can be used for the generation of biopharmaceuticals using mild reaction conditions. Glycoengineering: The synthesis of antibody–drug conjugates with high drug loading from native antibodies is of great interest for development of biopharmaceuticals. Here, selective biocatalysis using galactose oxidase and tandem Knoevenagel–Michael addition conjugation chemistry are combined to achieve molecular drug‐to‐antibody ratios of up to eight.
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