拓扑替康 ≥98%(HPLC)
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| 包装规格: | 20mg in glass bottle |
| 产品简介: | 一种拓扑异构酶I抑制剂。 |
| 溶解性: | DMSO:100 mg/mL(237.28 mM;超声助溶) |
| 储备液保存: | -80°C, 6 months; -20°C, 1 month。 |
| 体内实验: | 1、请依序添加每种溶剂: 10% DMSO→40% PEG300→5% Tween-80→45% Saline Solubility: 2.5 mg/mL (5.93 mM); 澄清溶液; 超声助溶 此方案可获得 2.5 mg/mL 的澄清溶液。 以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;再向上述体系中加入50 μL Tween-80,混合均匀;然后再继续加入 450 μL 生理盐水 定容至 1 mL。 2、请依序添加每种溶剂: 10% DMSO→90% (20% SBE-β-CD in Saline) Solubility: 2.5 mg/mL (5.93 mM); 澄清溶液; 超声助溶 此方案可获得 2.5 mg/mL 的澄清溶液。 以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液 中,混合均匀。2 g SBE-β-CD(磺丁基醚 β-环糊精)粉末定容于 10 mL 的生理盐水中,完全溶解至澄清透明。 <1mg/ml表示微溶或不溶。 普西唐提供的所有化合物浓度为内部测试所得,实际溶液度可能与公布值有所偏差,属于正常的批间细微差异现象。 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 |
| 靶点: | Topoisomerase I |
| 体外研究: | Topotecan obviously inhibits proliferation of human glioma cells and glioma stem cells (GSCs)in a dose- and time-dependent manner. Topotecan (0-40 μM) obviously inhibits the cell viability compared with the control groups, in a dose-dependent manner. Topotecan shows anti-proliferation activity against U251, U87, GSCs-U251 and GSCs-U87 cells, with IC50 values of 2.73±0.25, 2.95±0.23, 5.46±0.41, and 5.95±0.24 μM, respectively. |
| 体内研究: | NUB-7 metastatic model, the animals belonging to all the 4 groups are sacrificed after 14 days treatment. Compared with the control, Low dose metronomic (LDM) Topotecan (TP) and TP+Pazopanib (PZ) liver weights are significantly lower in TP+PZ-treated animals, compared with PZ. Microscopic tumors are visible in the livers of mice belonging to all the groups except TP+PZ confirming the ability of TP+PZ to control liver metastasis. Topotecan (0.5, 1.0, and 1.5 mg/kg; Orally, daily) causes greater reduction in microvascular density in an ovarian cancer model, but the mice treated with 1.5 mg/kg daily, oral Topotecan show decreased food intake, and a lesser antitumor effect. |
| 保存条件: | 2-8℃ 充氮保存 |
| 注意事项: | 1、为了您的安全和健康,请穿实验服并戴一次性手套操作。 2、以上信息仅做参考交流之用。 |
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