N-Acetyl-S-(p-chlorophenylcarbamoyl)cysteine (NACC) was identified as a metabolite of sulofenur. Sulofenur was demonstrated to have broad activity against solid tumors in preclinical studies but exhibited disappointing clinical responses due to its high protein binding related adverse effects. NACC exhibited low protein binding and excellent activity against a sulofenur sensitive human colon cancer cell line. In this study, analogs of NACC were synthesized and evaluated with four human cancer cell lines. Two of the NACC analogs showed excellent activity against two human melanoma cell lines, while NACC remains the most potent of the series. All three compounds were more potent than dacarbazine, which is used extensively in treating melanoma. NACC was shown to induce apoptosis without affecting the cell cycle. Further, NACC exhibited low toxicity against monkey kidney cells. The selective anticancer activity, low toxicity, an unknown yet but unique anticancer mechanism and ready obtainability through synthesis make NACC and its analogs promising anticancer agents.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3026848 | PMC |
| http://dx.doi.org/10.1016/j.bmc.2010.11.026 | DOI Listing |
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