ERK5-IN-2 is an orally active, sub-micromolar, selective ERK5 inhibitor with IC50s of 0.82 μM, 3 μM for ERK5 and ERK5 MEF2D, respectively. ERK5-IN-2 does not interact with the BRD4 bromodomain. ERK5-IN-2 suppresses both tumor xenograft growth and basic fibroblast growth factor (bFGF) driven Matrigel plug angiogenesis[1]. ERK5|0.82 μM (IC50)|ERK5 MEF2D|3 μM (IC50)
ERK5-IN-2 (compound 46) (p.o.; 100mg/kg; CD1 mice for 7 days and CD1 nude (nu/nu) mice for 10 days) has an anti-angiogenic effect and low concentrations of haemoglobin[1]. ERK5-IN-2 (i.v. or p.o.; 10mg/kg for 0.083-24?hours) exhibits low intrinsic clearance and has high flux and a low efflux ratio (ER) in a caco-2?cell permeability assay in both human and mouse[1]. Animal Model: Female CD1 mice (8-10 weeks old) with Matrigel inoculation and female CD1 nude (nu/nu) mice (8-10 weeks old) bearing A2780 human ovarian carcinoma xenografts[1]
[1]. Myers SM, et al. Identification of a novel orally bioavailable ERK5 inhibitor with selectivity over p38α and BRD4. Eur J Med Chem. 2019 May 25;178:530-543.