Description
Gimatecan (ST1481) is a potent topoisomerase I inhibitor. Gimatecan is an orally bioavailable camptothecin analogue with antitumor activityIn VitroGimatecan (3 to 300 ng/mL) significantly inhibits the growth of human bladder cancer models (HT1376 and MCR), thus reflecting antiproliferative potency. Gimatecan causes a persistent S-phase arrest At 0.003 µg/mL and the number of S-phase cells increased after treatment with a higher concentration (0.03 µg/mL). MCE has not independently confirmed the accuracy of these methods. They are for reference only. Cell Proliferation AssayCell Line: HT1376 cells harbor a p53 mutation; MCR cells harbor two p53 mutations: one in exon 4 (CGC→CCC) and one in exon 9 (CAG→TAG) Concentration: 3 to 300 ng/mL Incubation Time: 1, 6, and 24 hours Result: IC 50 s of 90±3 and 9.0±0.4 ng/mL for MCR and HT1376 cells after treatment for 1 hours. IC 50 s of 5.0±0.2 and 2.8±0.1 ng/mL for MCR and HT1376 cells after treatment for 24 hours. The growth-inhibitory effect was dose-dependent and time-dependent. HT1376 cells were more sensitive than MCR cells at least following a short-term exposure.In VivoGimatecan (2 mg/kg; treatment per os, every fourth day for four times) is effective for inhibiting tumor growth. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: Athymic Swiss nude mice bearing HT1376 model Dosage: 2 mg/kg Administration: Treatment per os, every fourth day for four times Result: Caused a marked tumor growth inhibition during treatment.Form:SolidIC50& Target:Topoisomerase I