Modulating Therapeutic Activity and Toxicity of Pyrrolobenzodiazepine Antibody-Drug Conjugates with Self-Immolative Disulfide Linkers

被引:53
|
作者
Pillow, Thomas H. [1 ]
Schutten, Melissa [1 ]
Yu, Shang-Fan [1 ]
Ohri, Rachana [1 ]
Sadowsky, Jack [1 ]
Poon, Kirsten Achilles [1 ,4 ]
Solis, Willy [1 ,5 ]
Zhong, Fiona [1 ]
Del Rosario, Geoffrey [1 ]
Go, Mary Ann T. [1 ]
Lau, Jeffrey [1 ]
Yee, Sharon [1 ]
He, Jintang [1 ]
Liu, Luna [1 ]
Ng, Carl [1 ]
Xu, Keyang [1 ]
Leipold, Douglas D. [1 ]
Kamath, Amrita V. [1 ]
Zhang, Donglu [1 ]
Masterson, Luke [2 ]
Gregson, Stephen J. [2 ]
Howard, Philip W. [2 ]
Fang, Fan [3 ]
Chen, Jinhua [3 ]
Gunzner-Toste, Janet [1 ]
Kozak, Katherine K. [1 ]
Spencer, Susan [1 ]
Polakis, Paul [1 ]
Polson, Andrew G. [1 ]
Flygare, John A. [1 ]
Junutula, Jagath R. [1 ,6 ]
机构
[1] Genentech Inc, San Francisco, CA 94030 USA
[2] Spirogen Ltd, QMBInnovat Ctr, London, England
[3] WuXi AppTec Co Ltd, Shanghai, Peoples R China
[4] Denali Therapeut, San Francisco, CA USA
[5] Bristol Myers Squibb, Princeton, NJ USA
[6] Cellerant Therapeut, San Carlos, CA USA
关键词
BIOLOGICAL EVALUATION; TARGETED TREATMENT; CANCER-THERAPY; IN-VIVO; DESIGN; CHEMISTRY; SELECTION; STABILITY; LYMPHOMA; DELIVERY;
D O I
10.1158/1535-7163.MCT-16-0641
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
A novel disulfide linker was designed to enable a direct connection between cytotoxic pyrrolobenzodiazepine (PBD) drugs and the cysteine on a targeting antibody for use in antibody-drug conjugates (ADCs). ADCs composed of a cysteine-engineered antibody were armed with a PBD using a self-immolative disulfide linker. Both the chemical linker and the antibody site were optimized for this new bioconjugation strategy to provide a highly stable and efficacious ADC. This novel disulfide ADC was compared with a conjugate containing the same PBD drug, but attached to the antibody via a peptide linker. Both ADCs had similar efficacy in mice bearing human tumor xenografts. Safety studies in rats revealed that the disulfide-linked ADC had a higher MTD than the peptide-linked ADC. Overall, these data suggest that the novel self-immolative disulfide linker represents a valuable way to construct ADCs with equivalent efficacy and improved safety. (C) 2017 AACR.
引用
收藏
页码:871 / 878
页数:8
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