journal article·2020-07Open access

Covalent Inhibitors Allosterically Block the Activation of Rho Family Proteins and Suppress Cancer Cell Invasion

Zhongya Sun, Hao Zhang, Yuanyuan Zhang, Liping Liao, Wen Zhou, Fengcai Zhang, Fulin Lian, Jing Huang, Pan Xu, Rukang Zhang, Wenchao Lu, Mingrui Zhu, Hongru Tao, Feng Yang, Hong Ding, Shijie Chen, Liyan Yue, Bing Zhou, Naixia Zhang, Minjia Tan, Hualiang Jiang, Kaixian Chen, Bo Liu, Chuanpeng Liu, Yongjun Dang, Cheng Luo

Advanced Science· Volume 7· Issue 14

Abstract

Abstract The Rho family GTPases are crucial drivers of tumor growth and metastasis. However, it is difficult to develop GTPases inhibitors due to a lack of well‐characterized binding pockets for compounds. Here, through molecular dynamics simulation of the RhoA protein, a groove around cysteine 107 (Cys107) that is relatively well‐conserved within the Rho family is discovered. Using a combined strategy, the novel inhibitor DC‐Rhoin is discovered, which disrupts interaction of Rho proteins with guanine nucleotide exchange factors (GEFs) and guanine nucleotide dissociation inhibitors (GDIs). Crystallographic studies reveal that the covalent binding of DC‐Rhoin to the Cys107 residue stabilizes and captures a novel allosteric pocket. Moreover, the derivative compound DC‐Rhoin04 inhibits the migration and invasion of cancer cells, through targeting this allosteric pocket of RhoA. The study reveals a novel allosteric regulatory site within the Rho family, which can be exploited for anti‐metastasis drug development, and also provides a novel strategy for inhibitor discovery toward “undruggable” protein targets.
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Research context

OpenAlex topics: Protein Kinase Regulation and GTPase Signaling · Enzyme Structure and Function · Enzyme function and inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Life Science and Technology Harbin Institute of Technology Harbin 150001 China

Drug Discovery and Design Center State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China

School of Pharmacy University of Chinese Academy of Sciences Beijing 100049 China

The Second Clinical Medical College, and Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome Guangzhou University of Chinese Medicine Guangzhou 510006 China

School of Pharmacy Nanchang University Jiangxi 330006 China

School of Pharmacy Fudan University Shanghai 201203 China

Open Studio for Druggability Research of Marine Natural Products Pilot National Laboratory for Marine Science and Technology (Qingdao) 1 Wenhai Road, Aoshanwei, Jimo Qingdao 266237 China

Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine Guangzhou 510006 China

Key Laboratory of Metabolism and Molecular Medicine the Ministry of Education Department of Biochemistry and Molecular Biology School of Basic Medical Sciences Department of Pulmonary and Critical Care Medicine Huashan Hospital Fudan University Shanghai 200032 China

Department of Pharmacology College of Pharmac Fujian Medical University Fuzhou 350004 China

Department of Pharmacy Guizhou University of Traditional Chinese Medicine South Dong Qing Road, Huaxi District Guizhou 550025 China

Funding

National Natural Science Foundation of China · K. C. Wong Education Foundation · Science and Technology Commission of Shanghai Municipality · Chinese Academy of Sciences · Ministry of Science and Technology of the People's Republic of China · National Major Science and Technology Projects of China

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