In Vitro: |
SGI-1027 is a DNMT inhibitor, with IC50s of 7.5 μM, 8 μM, and 12.5 μM for DNMT3B, DNMT3A, and DNMT1 with poly(dI-dC) as substrate. SGI-1027 shows an IC50 of 6 μM for DNMT1 (hemimethylated DNA). SGI-1027 (1, 2.5, or 5 µM) causes selective degradation of DNMT1 in several human cancer cell lines, but shows little or no cytotoxic effect on rat hepatoma cells, and does not induce apoptosis in rat hepatoma cells[1]. SGI-1027 shows an EC50 of 0.9 μM for hDNMT3A, and causes cytotoxicity on KG-1 cells, with an EC50 of 4.4 μM[2]. |