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Overexpressing myeloid cell leukemia sequence 1 (Mcl-1) protein is an important way to confer the resistance of cancer cells to conventional anti-cancer treatments. Therefore, developing Mcl-1 inhibitors has become an attractive strategy for cancer therapy. In the studies, a series of new indazole-acylsulfonamide hybrids were designed, synthesized and evaluated as potent Mcl-1 inhibitors. Among them, the most potent compound 17 (Ki = 0.43 μM) showed a little better inhibitory activity against Mcl-1 protein than positive control AT-101 (Ki = 0.45 μM). Pleasingly, it displayed > 40-fold selectivity over Bcl-2 (Ki = 18 μM) and Bcl-xL (no activity). Furthermore, compound 17 had good inhibitory activities against PC-3, MDA-MB-231 and K562 cells (IC50 = 12.3, 10.6 and 6.62 μM, respectively) and could effectively induce apoptosis and the activation of caspase-3 in a dose-dependent manner in K562 cells. Copyright © 2020 Elsevier Inc. All rights reserved.


Yichao Wan, Yuanhua Li, Chunxing Yan, Jiajun Wen, Zilong Tang. Discovery of novel indazole-acylsulfonamide hybrids as selective Mcl-1 inhibitors. Bioorganic chemistry. 2020 Nov;104:104217

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PMID: 32911192

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