期刊
FEBS LETTERS
卷 595, 期 2, 页码 195-205出版社
WILEY
DOI: 10.1002/1873-3468.14003
关键词
drug design; structure-activity relationship; tubulin; Vinca-domain ligands; X-ray crystallography
资金
- National Natural Science Foundation of China [81703553]
- Sichuan Science and Technology Program [2019YFS0003]
- China Postdoctoral Science Foundation [2018T110984, 2017M610607]
- National Major Scientific and Technological Special Project for 'Significant New Drugs Development' [2018ZX09201018-021]
- Post-Doctor Research Project, West China Hospital, Sichuan University [2018HXBH057]
This study investigated the interaction between tubulin vinca-domain ligands and tubulin, providing high-resolution crystal structures and revealing critical residues involved in the molecular mechanism. The designed novel triazolopyrimidine derivatives show potential for establishing new interactions with tubulin. This research lays the groundwork for developing innovative tubulin vinca-domain ligands.
Tubulin vinca-domain ligands can inhibit microtubule polymerization, causing cell death in mitosis, and their potential against multiple cancer types has been demonstrated. However, due to drug resistance and toxicities, development of novel vinca-domain ligands is still needed. In this study, we determined the high-resolution crystal structures of vinorelbine, YXD, and Phomopsin A in complex with tubulin at 2.5 angstrom. Additionally, we recapitulated all previously published high-resolution crystal structures of the vinca binding site to reveal critical residues and the molecular mechanism of vinca-domain ligands interacting with tubulin. Furthermore, we designed putatively novel triazolopyrimidine derivatives by introducing secondary amine groups to establish salt-bridge and H-bond interactions with Asp179(beta 1) and Asn329(alpha 2). Our studies provided the structural basis for designing novel tubulin vinca-domain ligands.
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