Design and Synthesis of α-Ketoamides as Cathepsin S Inhibitors with Potential Applications against Tumor Invasion and Angiogenesis

Journal of Medicinal Chemistry
2010.0

Abstract

A series of small molecules bearing an alpha-ketoamide warhead were synthesized and evaluated for their ability to inhibit cathepsin S, a key proteolytic enzyme upregulated in many cancers during tumor progression and metastasis. Most of the synthetic compounds were noncytotoxic, but several robustly inhibited cathepsin S (IC(50) < 10 nM) and potently suppressed cell migration, invasion, and capillary tube formation. These results highlight the potential of alpha-ketoamide therapy for preventing or delaying cancer spread.

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