Monactin displays strong antiproliferative activity against A2780 ovarian cancer cells (IC
50
0.13 μM), A2058 melanoma cells (0.02 μM), and H522-T1 non small-cell cancer lung cells (0.01 μM).
Monactin inhibits TCF/β-catenin transcriptional activity.
At a concentration of 10 μM, nigericin and monactin inhibited growth of Streptococcus faecalis, and the inhibition was reversed by addition of excess K(+).
Monactin is potent uncoupler of oxidative phosphorylation and inducer of ATP hydrolysis in rat liver mitochondria.