ARN-21934

ARN-21934 is a potent, highly selective, blood-brain barrier (BBB) penetrant inhibitor for human topoisomerase II α over β. ARN-21934 inhibits DNA relaxation with an IC 50 of 2 μM as compared to the anticancer agent Etoposide (IC 50 =120 μM). ARN-21934 exhibits a favorable in vivo pharmacokinetic profile and is a promising lead compound for anticancer research

In Vitro

ARN-21934 display a different affinity for topoIIα and topoIIβ. ARN-21934 is more potent against the α isoform, the IC 50 value for the inhibition of DNA relaxation by topoIIα is 2 μM, the value for inhibition of DNA relaxation by topoIIβ is 120 μM. ARN-21934 exhibits a small panel of human cancer cell lines. It against melanoma (A375 and G-361), breast (MCF7), endometrial (HeLa), lung (A549), and androgen-independent prostate (DU145) cancer cells with IC 50 values of 12.6 μM, 8.1 μM, 15.8 μM, 38.2 μM, 17.1 μM, and 11.5 μM, respectively. MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

ARN-21934 (intraperitoneal injection; 10 mg/kg; single dose) reaches a maximal plasma concentration of 0.68 μg/mL after 15 min. The half-life is 149 min in circulation, still being present in plasma 360 min after injection. The compound also exhibits good clearance values (0.116 L/(min kg)). Besides, ARN-21934 is able to reach the brain, with a maximum concentration of compound at 60 min, and is still present in the brain 360 min after injection MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Form:Solid

IC50& Target:topoisomerase II alpha topoisomerase II beta