Doxorubicin hydrochloride (Adriamycin) 属于蒽环类抗生素,是人类 DNA 拓扑异构酶 I II 抑制剂 (IC50=0.8 2.67 μM)。Doxorubicin hydrochloride 具有细胞毒性和抗肿瘤活性。Doxorubicin hydrochloride 可降低 AMPK 及其下游靶蛋白乙酰辅酶 A 羧化酶的磷酸化,还可诱导凋亡和自噬。
TopoisomeraseI II inhibitor 6(compound 3i)作为topoisomerase I 和 II 的抑制剂显示出优异的效能,其IC50值分别为4.77 µM和 15 µM。此外,该化合物在人类黑色素瘤LOX IMVI癌细胞系中展示了显著的抗增殖效果,IC50值达到了26.7 µM和25.4 µM。
S39625, an E-ring camptothecin keto analogue, is a stable, potent, and selective topoisomerase I inhibitor without being substrates of drug efflux transporters. Nanomolar concentrations of S39625 induces intense and persistent histone gamma-H2AX. The chem
TAS-103 is a dual inhibitor of DNA topoisomerase I II, used for cancer research. TAS-103 is a dual inhibitor of DNA topoisomerase I II. TAS-103 (0.1-10 μM) is active on CCRF-CEM cells, with an IC50 value of 5 nM. TAS-103 (0.1 μM) significantly increases levels of topo IIα FITC immunofluorescence in individual CCRF-CEM cells[1]. TAS-103 (0.01-1 μM) is highly cytotoxic to Lewis lung carcinoma (LLC) cells, and Liposomal TAS-103 is almost as active as free TAS-103[2]. TAS-103 inhibits the viability of HeLa cells, with an IC50 of 40 nM. TAS-103 (10 μM) disrupts signal recognition particle (SRP) complex formation, and induces destabilization of SRP14 and SRP19 and its eventual degradation[3]. TAS-103 (30 mg kg, i.v.) causes significant tumor growth suppression in mice bearing Lewis lung carcinoma (LLC) cells, without obvious body weight loss, and the liposomal TAS-103 is more active than free TAS-103[2]. [1]. Padget K, et al. An investigation into the formation of N- [2-(dimethylamino)ethyl]acridine-4-carboxamide (DACA) and 6-[2-(dimethylamino)ethylamino]- 3-hydroxy-7H-indeno[2, 1-C]quinolin-7-one dihydrochloride (TAS-103) stabilised DNA topoisomerase I and II cleavable complexes in human leukaemia cells. Biochem Pharmacol. 2000 Sep 15;60(6):817-21. [2]. Shimizu K, et al. Cancer chemotherapy by liposomal 6-[12-(dimethylamino)ethyl]aminol-3-hydroxy-7H-indeno[2,1-clquinolin-7-one dihydrochloride (TAS-103), a novel anti-cancer agent. Biol Pharm Bull. 2002 Oct;25(10):1385-7. [3]. Yoshida M, et al. A new mechanism of 6-((2-(dimethylamino)ethyl)amino)-3-hydroxy-7H-indeno(2,1-c)quinolin-7-one dihydrochloride (TAS-103) action discovered by target screening with drug-immobilized affinity beads. Mol Pharmacol. 2008 Mar;73(3):987-94. Epub 2007 Dec 18.
Isodiospyrin is a novel human DNA topoisomerase I inhibitor, it exhibits cytotoxic activity to tumor cell lines. Isodiospyrin has antibacterial activity, the minimum inhibitory concentrations (MICs) against Gram-positive bacteria ranged from 0.78 to 50 mi