Proscillaridin A is a potent poison of topoisomerase I/II activity with IC50 values of 30 nM and 100 nM, respectively[1].
[1]. Bielawski K, et al. Inhibition of DNA topoisomerases I and II, and growth inhibition of breast cancer MCF-7 cells by ouabain, digoxin and proscillaridin A.Biol Pharm Bull. 2006 Jul;29(7):1493-7.
















