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AAPK-25 is a potent and selective Aurora/PLK dual inhibitor with anti-tumor activity, which can cause mitotic delay and arrest cells in a prometaphase, reflecting by the biomarker histone H3Ser10 phosphorylation and followed by a surge in apoptosis. AAPK-25 targets Aurora-A, -B, and -C with Kd values ranging from 23-289 nM, as well as PLK-1, -2, and -3 with Kd values ranging from 55-456 nM[1]. Kd: 23 nM (Aurora-A), 78 nM (Aurora-B), 289 nM (Aurora-C), 55 nM (PLK-1), 272 nM (PLK-2), 456 nM (PLK-3), 5.32 μM (ERK), 7.11 μM (PI3K), 8.02 μM (CDK)[1]

AAPK-25 inhibits HCT-116, Calu6, A549 and MCF-7 cells growth with IC50s of 0.4, 5.3, 11.6, and 2.3 μM, respectively[1].AAPK-25 induces apoptosis as a dose-dependent manner in HCT-116 cell line[1].AAPK-25 has significantly increased histone H3Ser10 phosphorylation, indicating a markedly mitotic block[1].AAPK-25 is in notably inhibition of the mitotic spindle checkpoint, which is mainly mediated by cell cycle signaling and mitotic pathways[1].

AAPK-25 enhances survival rate in the BALB/c nude mice tumor xenograft model[1].

[1]. Qi B, et al. Discovery of inhibitors of Aurora/PLK targets as anti-cancer agents. J Med Chem. 2019 Aug 5.

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