Ethynylphosphonamidates for the Rapid and Cysteine‐Selective Generation of Efficacious Antibody–Drug Conjugates
作者:Marc‐André Kasper、Andreas Stengl、Philipp Ochtrop、Marcus Gerlach、Tina Stoschek、Dominik Schumacher、Jonas Helma、Martin Penkert、Eberhard Krause、Heinrich Leonhardt、Christian P. R. Hackenberger
DOI:10.1002/anie.201904193
日期:2019.8.19
from native non‐engineered monoclonal antibodies through a simple one‐pot reduction and alkylation. Ethynylphosphonamidates can be easily substituted with hydrophilic residues, giving rise to electrophilic labeling reagents with tunable solubility properties. We demonstrate that ethynylphosphonamidate‐linked ADCs have excellent properties for next‐generation antibody therapeutics in terms of serum stability
抗体-药物偶联物(ADC)合成对新型生物偶联反应的要求异常高,这是因为偶联选择性以及接头和有效负载的稳定性和疏水性极大地影响了最终产品的性能和安全性。我们报道了Cys选择性乙炔基膦酰胺盐作为通过简单的一锅还原和烷基化从天然非工程化单克隆抗体中快速生成有效ADC的新试剂。乙炔基膦酸酯可以很容易地被亲水性残基取代,从而产生具有可调溶解性的亲电标记试剂。我们证明乙炔基氨基膦酸酯连接的ADC在血清稳定性和体内抗肿瘤活性方面对下一代抗体治疗具有卓越的性能。