Description
Methylstat is a methyl ester prodrug of a Jumonji C domain-containing histone demethylase (JMJD) inhibitor that has favorable cell permeability. The free acid of methylstat inhibits JMJD2A, JMJD2C, JMJD2E, PHF8, and JMJD3 with IC50 values of approximately 4.3, 3.4, 5.9, 10, and 43uM, respectively, in an in vitro assay. Methylstat inhibits growth of the JMJD2C-sensitive esophageal cancer cell line KYSE150 with a GI50 of 5.1uM, whereas the free acid of methylstat did not inhibit cell growth up to 100uM. Methylstat induces histone hypermethylation at multiple sites in a concentration-dependent manner (EC50 for H3K4me3 and H3K9me3=10.3 and 8.6uM in KYSE150 cells and 6.7 ad 6.3uM in MCF-7 cells, respectively)