In Vitro: MC0704 (0-50 μM; 72 h) shows cytotoxicity to HEK-293, lung epithelial normal (MRC-5), MDA-MB 231, MDA-MB-231 paclitaxel-resistant (MDA-MB-231-PTR) and MDA-MB-231 docetaxel-resistant (MDA-MB-231-DTR) cells with IC50 values of 3.11, 33.25, 2.98, 3.24 and 2.87 μM, respectively.MC0704 (0, 0.4, 2, 10 and 50 μM; 24 h) inhibits activity of STAT3 with an IC50 value of 2.13 μM.MC0704 (5 μM; 24 h) suppresses the activation of STAT3.MC0704 (0, 2.5, 5 and 10 μM; 36-48 h) increases the cell cycle arrest at the G2/M phase and induces apoptosis in MDA-MB-231-DTR cells.
In Vivo: MC0704 (10 mg/kg; i.p., 10 mg/kg, once daily for 12 days) inhibits cancer growth of mice with MDA-MB-231-DTR cells transplant.