EZM 2302 (Synonyms: GSK3359088)

Cell experiment:

Cultured cells in linear/log phase growth are split to a seeding density of 2e5 cells/mL in 2–20mLs of media, depending on the yield required at the end of the growth period. EZM 2302 is diluted in DMSO and added to each culture vessel with a final DMSO concentration of 0.2%. Cells are allowed to grow for 96 hours. At the conclusion of each treatment period, cells are harvested by centrifugation (5 minutes, 1200 rpm), and cell pellets are rinsed once with PBS before being frozen on dry ice pending further processing[1].

Animal experiment:

Rats[1]Male Sprague-Dawley rats (n=3) are treated with a single dose of EZM2302 at 2 mg/kg by intravenous (i.v.) injection and 10 mg/kg by oral gavage administration (p.o.; mouse only), formulated in 5% dextrose in water, pH 3.5. An additional group of rats, cannulated in both the jugular and portal veins are dosed by oral gavage (10 mg/kg, in 0.5% methylcellulose in water). Approximately 110 μL of blood is taken from the animals by retro-orbital bleeding (mouse), tail vein (rat i.v.) or both jugular and portal vein sampling (rat p.o.) at pre-specified time intervals. The 2 h samples are split for parallel determination of blood and plasma concentration[1].Mice[1]RPMI-8226 cells are inoculated at 5×106 cells/mouse and treatment began when the mean tumor sizes reach 120 mm3 (28 days post-inoculation). CB-17 SCID Mice are assigned into groups using a randomized block design. EZM2302 or vehicle (0.5% methylcellulose in water) is administered orally BID at a dose volume of 37.5, 75, 150, or 300 mg/kg for 21 days. Body weights are measured twice a week for the duration of the study. Tumor size is measured twice weekly in two dimensions using a caliper, and the volume is expressed in cubic millimeters. Animals are euthanized 3 hours post-final dose, with blood and tissues collected for analysis[1].

References:

[1]. Drew AE, et al. Identification of a CARM1 Inhibitor with Potent In Vitro and In Vivo Activity in Preclinical Models of Multiple Myeloma. Sci Rep. 2017 Dec 21;7(1):17993.