Effect of Linker Stereochemistry on the Activity of Indolinobenzodiazepine Containing Antibody–Drug Conjugates (ADCs)
作者:Emily E. Reid、Katie E. Archer、Manami Shizuka、Alan Wilhelm、Nicholas C. Yoder、Chen Bai、Nathan E. Fishkin、Luke Harris、Erin K. Maloney、Paulin Salomon、Erica Hong、Rui Wu、Olga Ab、Shan Jin、Katharine C. Lai、Surina Sikka、Ravi V. J. Chari、Michael L. Miller
DOI:10.1021/acsmedchemlett.9b00240
日期:2019.8.8
determine the role of amino acid stereochemistry on antitumor activity and tolerability, we incorporated l- and d-alanyl groups in the dipeptide, synthesized all four diastereomers, and prepared and tested the corresponding ADCs. Results of our preclinical evaluation showed that the l-Ala-l-Ala configuration provided the ADC with the highest therapeutic index (antitumor activity vs toxicity).
结合有效的吲哚基二氮杂卓DNA烷基化剂作为有效载荷成分的抗体-药物偶联物(ADC)目前正在临床评估中。在一个ADC设计中,有效负载分子通过肽酶不稳定的连接到抗体升-Ala-升-Ala接头。为了确定氨基酸立体化学对抗肿瘤活性和耐受性的作用,我们在二肽中掺入了l和d-丙氨酰基,合成了所有四种非对映异构体,并制备并测试了相应的ADC。我们的临床前评估结果表明,l- Ala- 1 -Ala构型为ADC提供了最高的治疗指数(抗肿瘤活性与毒性)。