European Journal of Medicinal Chemistry p. 105 - 115 (2019)
Update date:2022-08-16
Topics:
Zhou, Yuan
Tao, Pingde
Wang, Meigui
Xu, Peng
Lu, Wei
Lei, Pan
You, Qiuyun
Human lactate dehydrogenase A (LDHA) plays a critical role in the glycolytic process, making the enzyme an ideal of anti-cancer drug target. Herein, we report the discovery of novel potent LDHA inhibitors by screening an in-house library. The hit-to-lead modification enabled us to identify compound 24c, which inhibited LDHA activity with an EC50 value of 90 nM, and reduced MiaPaCa-2 cancer cell proliferation with an IC50 value of 2.1 μM. In line with the in vitro anticancer activity, 24c suppressed the tumor growth at a dose of 10 mg/kg in a MiaPaCa-2 cells xenograft model, but with little effect to the mice weight. Moreover, 24c strongly inhibited MiaPaCa-2 cell colonies formation, induced MiaPaCa-2 cell apoptosis, and arrested MiaPaCa-2 cell cycle at G2 phase. In addition, the mitochondrial bioenergetics analysis suggested that 24c could reprogram cancer cell metabolic pathways from glycolysis to oxidation phosphorylation, which verified by decreasing the extracellular acidification rates and lactate formation, and increasing oxygen consumption rate in cancer cell. All these results indicate 24c is a promising metabolic modulator for the anticancer drug development.
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(2019)