Abstract
Cysteine cathepsins are an important class of enzymes that coordinate a variety of important cellular processes, and are implicated in various types of human diseases. However, small molecule inhibitors that are cell-permeable and non-peptidyl in nature are scarcely available. Herein the synthesis and development of sulfonyloxiranes as covalent inhibitors of cysteine cathepsins are reported. From a library of compounds, compound 5 is identified as a selective inhibitor of cysteine cathepsins. Live cell imaging and immunocytochemistry of metastatic human breast carcinoma MDA-MB-231 cells document the efficacy of compound 5 in inhibiting cysteine cathepsin activity in living cells. A cell-motility assay demonstrates that compound 5 is effective in mitigating the cell-migratory potential of highly metastatic breast carcinoma MDA-MB-231 cells.
Original language | English (US) |
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Pages (from-to) | 2975-2987 |
Number of pages | 13 |
Journal | Bioorganic and Medicinal Chemistry |
Volume | 21 |
Issue number | 11 |
DOIs | |
State | Published - Jun 1 2013 |
Bibliographical note
Funding Information:The authors wish to gratefully acknowledge the funding support provided by the PSC-CUNY Research Award Program , and Queensborough Community College (QCC)/Queens College NSF-STEP and NIH Bridges programs .
Keywords
- Cancer metastasis
- Cathepsin inhibitor
- Cell migration
- Cysteine protease inhibitor
- Sulfonyloxiranes