ENMD-2076

11c displayed comparable therapeutic efficacy in an MDA-MB-231 xenograft mouse model relative to the positive control ENMD-2076, while requiring only half the dose of ENMD-2076. These results confirmed that 11c may be a promising drug candidate for the treatment of triple negative breast cancer (TNBC). Our work may provide a new perspective on the design of covalent inhibitors of Aurora kinase.

We demonstrated that using HTS can considerably shorten drug discovery time scales, leading to the identification of promising lead compounds. Our study is the first to provide preclinical evidence of the antileukemic activity of AURKAi, with particular focus on NPM1-mutated AML.

In the validation assay, 2 compounds (MK-5108 and MK-8745) were confi rmed as more active against NPM1-mutated than NPM1–wild-type AML cells by either CyQUANT or apoptosis assay. Strikingly, we confi rmed selectivity for two additional AURKAi (Alisertib and ENMD-2076, both isoform-selective inhibitors of AURKA) that were not included in the screening library... We demonstrated that using HTS can considerably shorten drug discovery time scales, leading to the identifi cation of promising lead compounds. Our study is the fi rst to provide preclinical evidence of the antileukemic activity of AURKAi, with particular focus on NPM1-mutated AML.

The cell-based cytotoxicity assays showed that compound 16h was the most potent cytotoxic agent against all tested cancer cells and had a lower IC value than ENMD-2076 against MDA-MB-231 cells...Accordingly, 16h caused aberrant mitotic phenotypes and obvious G2/M phase arrest in MDA-MB-231 cells and induced caspase-dependent apoptosis in MDA-MB-231 cells. These results demonstrated that 16h is a potential candidate for the development of anticancer agents targeting Aurora A kinase.

The study provided no rationale for further studying ENMD-2076 as a single agent in FLC.