CPT-Se4, a selenoprodrug of Camptothecin (CPT), shows improved potency in killing cancer cells and inhibiting tumor growth. CPT-Se4 decreases the GSH/GSSG ratio and total thiols, elevates the ROS level in Hep G2 cells, and eventually induces apoptosis of cancer cells. CPT-Se4 shows cytotoxicity against HeLa, Hep G2, A549, and SMMC-7721 cells (IC50= 2.54-6.4 μM).

Corydamine, 3-arylisoquinoline alkaloid, is a potent DNA topoisomerase I/II inhibitor. Corydamine has anti-cancer activity.

Topoisomerase I/II inhibitor 2 (compound 1a) is a potent Topoisomerase inhibitor (IC50= 9.82 μM on Huh7 cells and 6.83 μM on LM9 cells). Topoisomerase I/II inhibitor 2 has dual inhibition on DNA topoisomerase I/II, also can obviously reduce the growth of xenograft tumor in mice model. Topoisomerase I/II inhibitor 2 has the potential value in treating liver cancer.

HH-N25 is a a potent and selective topoisomerase I (TOP1) inhibitor with potent antiproliferative activities against a panel of human breast cancer cell lines (IC50=0.045-4.2 uM).HH-N25 shows potent antitumor activities in human breast cancer cells in vitro and in vivo.

Lapcin is a potent dual topoisomerase I/II inhibitor with nM to pM IC50s against diverse cancer cell lines (Colon cancer HT29 cell IC50=0.516 nM); Lapcin showed weak activity against DNA gyrase (IC50>20.5 uM). While only weakly active against DNA gyrase, lapcin was a potent of inhibitor of both DNA relaxation by topoisomerase I (IC50=2.17 uM) and DNA decatenation by topoisomerase II (IC50=7.53uM), 14 times more potent than the alkaloid camptothecin. Lapcin was more potent than the topoisomerase II inhibitor etoposide against all of the cell lines we tested, with the exception of the lung cancer cell NCI-H226, against which it was essentially equipotent. Cell lines expressing wild-type p53 (HCT116, H226, MCF7) tended to show higher IC50s than p53 reduced cell lines (NCI-H1299, HT29, Colo205, Hela).

LMP517 (NSC 781517) is a non-camptothecin, dual TOP1 and TOP2 topoisomerase inhibitor.LMP517 showed better antitumor activity than its parent compound LMP744 against H82 (small cell lung cancer) xenografts.

AZD5099, an antibacterial agent, is a potent and selective bacterial topoisomerase II inhibitor. AZD5099 potently inhibits the infections caused by Gram-positive and fastidious Gram-negative bacteria.

Lurtotecan (GI147211; OSI-211), a semisynthetic Camptothecin analog, is a topoisomerase I inhibitor. Lurtotecan has anticancer effects.

SDOX is the Doxorubicin (DOX) prodrug. The loaded DOX prodrugs (SDOX) which can release the parent drugs DOX triggered by excessive GSH in tumor cells, minimize the unexpected side effects on normal tissues without compromising the potency.

Berberine sulfate is an alkaloid isolated from the Chinese herbal medicine Huanglian, as an antibiotic. Berberine sulfate induces reactive oxygen species (ROS) generation and inhibits DNA topoisomerase. Berberine sulfate has antineoplastic properties.

Mitoxantrone diacetate is a potent topoisomerase II inhibitor. Mitoxantrone diacetate also inhibits protein kinase C (PKC) activity with an IC50 of 8.5 μM. Mitoxantrone diacetate induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone diacetate shows antitumor activity.

Topotecan hydrochloride hydrate is an orally active and potent Topoisomerase I inhibitor. Topotecan hydrochloride hydrate induces cell cycle arrest in G0/G1 and S phases and promotes apoptosis. Topotecan hydrochloride hydrate shows anticancer activity.

Daunorubicin (Daunomycin) citrate is a topoisomerase II inhibitor with potent anti-tumor activity. Daunorubicin citrate inhibits DNA and RNA synthesis. Daunorubicin citrate is a cytotoxin that inhibits cancer cell viability and induces apoptosis and necrosis. Daunorubicin citrate is also an anthracycline antibiotic. Daunorubicin citrate can be used in the research of infection and variety of cancers, including leukemia, non-Hodgkin lymphomas, Ewing's sarcoma, Wilms' tumor.

Pixantrone (BBR 2778 (free base)) hydrochloride, a mitoxantrone analog, is a topoisomerase II inhibitor and DNA intercalator, with anti-tumor activity.

TP0480066 is a selective topoisomerase II inhibitor with IC50s of 1.10 and 62.89 nM for DNA gyrase and topo IV, respectively. TP0480066 shows good activity of againsting various bacterial species including drug-resistant strains. TP0480066 also exhibits potent inhibitory activity to N. gonorrhoeae, can be used in study of gonorrhea.

Belotecan (CKD-602 free base) is a DNA topoisomerase I inhibitor. Belotecan induces cell apoptosis and cell-cycle arrest. Belotecan is a camptothecin analogue with anti-tumor effects, it can be used for the research of cancer.

Elomotecan (BN 80927 free base) is a potent inhibitor of topoisomerases I and II. Elomotecan is a camptothecin analog belonging to the homocamptothecin family (hCPT). Elomotecan reduces the proliferation of different tumor cells with higher potency than other anticancer drugs of reference targeting topoisomerases I and II.

LMP744 (MJ-III-65, NSC706744) is a small molecule TOP1 inhibitor antitumoral activity.