Dual-site molecular glues for enhancing protein-protein interactions of the CDK12-DDB1 complex.
Zemin Zhang, Yuanqing Li, Jie Yang, Jiacheng Li, Xiongqiang Lin, Ting Liu, Shiling Yang, Jin Lin, Shengyu Xue, Jiamin Yu, Cailing Tang, Ziteng Li, Liping Liu, Zhengzheng Ye, Yanan Deng, Zhihai Li, Kaixian Chen, Hong Ding, Cheng Luo, Hua Lin
Author Information
Zemin Zhang: The School of Pharmacy, Fujian Medical University, Fuzhou, China. ORCID
Yuanqing Li: School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.
Jie Yang: Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou, China.
Jiacheng Li: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
Xiongqiang Lin: The School of Pharmacy, Fujian Medical University, Fuzhou, China.
Ting Liu: The School of Pharmacy, Fujian Medical University, Fuzhou, China.
Shiling Yang: Key Laboratory of Microbial Pathogenesis and Interventions of Fujian Province University, the Key Laboratory of Innate Immune Biology of Fujian Province, Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou, China.
Jin Lin: The School of Pharmacy, Fujian Medical University, Fuzhou, China.
Shengyu Xue: School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.
Jiamin Yu: School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.
Cailing Tang: School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.
Ziteng Li: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. ORCID
Liping Liu: Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, China.
Zhengzheng Ye: School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.
Yanan Deng: School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China. ORCID
Zhihai Li: School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.
Kaixian Chen: School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, China.
Hong Ding: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. hding@simm.ac.cn.
Cheng Luo: The School of Pharmacy, Fujian Medical University, Fuzhou, China. cluo@simm.ac.cn. ORCID
Hua Lin: State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. hlin@fjnu.edu.cn. ORCID
Protein-protein interactions (PPIs) stabilization with molecular glues plays a crucial role in drug discovery, albeit with significant challenges. In this study, we propose a dual-site approach, targeting the PPI region and its dynamic surroundings. We conduct molecular dynamics simulations to identify critical sites on the PPI that stabilize the cyclin-dependent kinase 12 - DNA damage-binding protein 1 (CDK12-DDB1) complex, resulting in further cyclin K degradation. This exploration leads to the creation of LL-K12-18, a dual-site molecular glue, which enhances the glue properties to augment degradation kinetics and efficiency. Notably, LL-K12-18 demonstrates strong inhibition of gene transcription and anti-proliferative effects in tumor cells, showing significant potency improvements in MDA-MB-231 (88-fold) and MDA-MB-468 cells (307-fold) when compared to its precursor compound SR-4835. These findings underscore the potential of dual-site approaches in disrupting CDK12 function and offer a structural insight-based framework for the design of cyclin K molecular glues.
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