ML327

Cell experiment:

in vitro experiments.--> Cells are seeded onto 96-well plates at equivalent density (3,000 to 10,000 depending upon cell line), permitted to attach overnight, and treated with either ML327 (10 μM) or vehicle. Daily absorbance measurements (450 nm) using the cell counting kit are obtained. For estimation of IC50 values, cells are plated at equal density, permitted to attach, and baseline absorbance is obtained using cell counting kit. Cells are then treated with varying doses of ML327 (0.1 to 30 μM) and cell viability is measured 72 h after treatment[1].

Animal experiment:

in vivo experiments.--> Male athymic nude mice (4 to 6 weeks old) are maintained as described. BE(2)-C cells xenografts are established as previously described. Briefly, 1×106 cells/100 µL of HBSS are injected subcutaneously into flanks using a 26-gauge needle (n=10 per group). Mice are monitored daily for xenograft formation and assessed by measuring the two greatest perpendicular tumor diameter with venier calipers. Xenograft volumes are estimated using the following formula [(length×width2)/2]. Once tumors reach 75 to 100 mm3, mice are randomized to receive either 50 mg/kg of ML327 or control vehicle (70% polyethylene glycol) via intraperitoneal injection twice daily for 14d. Weight and tumor volume are recorded daily. After completion of two weeks of treatment, mice are euthanized and tumors are excised, weighed, and RNA is isolated[1].

References:

[1]. Rellinger EJ, et al. Isoxazole compound ML327 blocks MYC expression and tumor formation in neuroblastoma. Oncotarget. 2017 Jul 20;8(53):91040-91051.
[2]. An H, et al. Small molecule/ML327 mediated transcriptional de-repression of E-cadherin and inhibition of epithelial-to-mesenchymal transition.Oncotarget. 2015 Sep 8;6(26):22934-48.