Journal of medicinal and pharmaceutical chemistry 2013-04-25

Potent fibrinolysis inhibitor discovered by shape and electrostatic complementarity to the drug tranexamic acid.

Jonas Boström, J Andrew Grant, Ola Fjellström, Anders Thelin, David Gustafsson

文献索引：J. Med. Chem. 56(8) , 3273-80, (2013)

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摘要

Protein-protein interfaces provide an important class of drug targets currently receiving increased attention. The typical design strategy to inhibit protein-protein interactions usually involves large molecules such as peptides and macrocycles. One exception is tranexamic acid (TXA), which, as a lysine mimetic, inhibits binding of plasminogen to fibrin. However, the daily dose of TXA is high due to its modest potency and pharmacokinetic properties. In this study, we report a computational approach, where the focus was on finding electrostatic potential similarities to TXA. Coupling this computational technique with a high-quality low-throughput screen identified 5-(4-piperidyl)-3-isoxazolol (4-PIOL) as a potent plasminogen binding inhibitor with the potential for the treatment of various bleeding disorders. Remarkably, 4-PIOL was found to be more than four times as potent as the drug TXA.

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