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Thrombin inhibitors identified by computer-assisted multiparameter design.

Daniel Riester¹, Frank Wirsching, Gabriela Salinas

¹Abteilung für Molekulare Genetik und Präparative Molekularbiologie, Institut für Mikrobiologie und Genetik, Grisebachstrasse 8, 37077 Göttingen, Germany.

Proceedings of the National Academy of Sciences of the United States of America

|June 7, 2005

Summary

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This summary is machine-generated.

Researchers developed novel thrombin inhibitors using computer-assisted optimization. These highly selective and potent compounds show promise for anticoagulant therapy with favorable pharmacokinetic properties.

Area of Science:

Medicinal Chemistry
Pharmacology
Biochemistry

Background:

Thrombin is a key enzyme in the coagulation cascade.
Development of selective thrombin inhibitors is crucial for anticoagulant therapies.
Existing inhibitors may have limitations in selectivity or pharmacokinetic profiles.

Purpose of the Study:

To generate novel, highly selective synthetic thrombin inhibitors.
To optimize inhibitor properties using a multiparameter approach.
To characterize the pharmacokinetic and pharmacodynamic profile of lead compounds.

Main Methods:

Computer-assisted multiparameter optimization.
Iterative design cycles combining combinatorial synthesis and bioassays.
Algorithmic data processing for compound selection.

Related Experiment Videos

In vitro and in vivo characterization of inhibitor properties.

X-ray crystallography for binding mode analysis.

Main Results:

Identified lead compounds with thrombin inhibitory constants in the lower nanomolar range.
Achieved >100,000-fold selectivity over other proteases (e.g., Factor Xa, Factor XIIa).
Demonstrated favorable profiles: non-toxic, metabolically stable, low protein binding, good solubility, high anticoagulant activity.
Observed slow, exclusively renal elimination in a rat model.
X-ray crystallography revealed inhibitor binding in the S1 pocket of thrombin.

Conclusions:

The computer-assisted multiparameter optimization is effective for developing potent and selective thrombin inhibitors.
The identified compounds represent a promising new class of anticoagulants.
These inhibitors possess a favorable drug-like profile, warranting further investigation for clinical application.