LMP517 (NSC 781517) a indenoisoquinoline, is a potent a dual TOP1 and TOP2 inhibitor. LMP517 shows better antitumor activity than its parent compound LMP744 against H82 (Small Cell Lung Cancer) xenografts. LMP517 induces TOP1 cleavage complexes (TOP1ccs) and TOP2ccs.
References:
[1]. Marzi L, et al. The Indenoisoquinoline LMP517: A Novel Antitumor Agent Targeting both TOP1 and TOP2. Mol Cancer Ther. 2020 Aug;19(8):1589-1597.
















