产品描述: | Dexrazoxane HCl (ADR-529,Totect, ICRF-187, Zinecard, Cardioxane)是一种胞内铁螯合剂,能够减少氧自由基 的生成,是心脏保护剂。也是topoisomerase II的抑制剂 |
靶点: |
Topo II(Cell-free assay);Topoisomerase |
体外研究: |
在大鼠心肌细胞中,Dexrazoxane (10 mM),临床上限制蒽环类药物的心脏毒性,防止daunorubicin诱导的细胞凋亡,但不影响高浓度anthracycline诱导的坏死。在大鼠心肌细胞中,Dexrazoxane通过结合自由的铁或松散结合的铁络合doxorubicin而发挥其心脏保护作用,从而防止或减少损害的细胞成分的位点特定的氧自由基产生。在H9C2心肌细胞中,Dexrazoxane特异抑制doxorubicin诱导的DNA损伤γ-H2AX信号,但不影响camptothecin或过氧化氢。Dexrazoxane也诱导Top2beta的快速降解,这和doxorubicin诱导的DNA损伤的减少是相辅相成的。Dexrazoxane通过干扰Top2beta拮抗doxorubicin诱导的DNA损伤,表明Top2beta在doxorubicin心脏毒性中的作用。在H9C2心肌细胞中,Dexrazoxane在细胞内水解成其活性形式并结合铁,以防止形成超氧自由基,从而防止线粒体的破坏 |
体内研究: |
在B6D2F1小鼠中,Dexrazoxane和doxorubicin, daunorubicin或idarubicin联用减少组织病变(伤口大小和时间曲线)分别达96%,70%,87%。Dexrazoxane和doxorubicin, daunorubicin或idarubicin联用导致伤口数量以及伤口的持续时间显著减少 |
细胞实验: |
Cell lines: 新生大鼠心肌细胞 Concentrations: 30 μM Incubation Time: 3 h Method: 用dexrazoxane (DEX), sobuzoxane (SOB) 或 merbarone (MER) 预处理新生大鼠心肌细胞3小时后,加入anthracyclines daunorubicin或doxorubicin孵育3小时,然后在anthracycline-free条件下孵育48小时或在hydrogen peroxide (H2O2)孵育48小时 |
动物实验: |
Animal Models: female B6D2FI Dosages: 62.5 mg/kg Administration: i.p. |
参考文献: |
1. Sawyer DB, et al. Daunorubicin-induced apoptosis in rat cardiac myocytes is inhibited by dexrazoxane. Circ Res, 1999, 84(3), 257-265. 2. Hasinoff BB, et al. Chemical, biological and clinical aspects of dexrazoxane and other bisdioxopiperazines. Curr Med Chem, 1998, 5(1), 1-28. 3. Lyu YL, et al. Topoisomerase IIbeta mediated DNA double-strand breaks: implications in doxorubicin cardiotoxicity and prevention by dexrazoxane. Cancer Res, 2007, 67(18), 8839-8846. 4. Seifert CF, et al. Dexrazoxane in the prevention of doxorubicin-induced cardiotoxicity. Ann Pharmacother, 1994, 28(9), 1063-1072. 5. Langer SW, et al. Treatment of anthracycline extravasation with dexrazoxane. Clin Cancer Res, 2000, 6(9), 3680-3686. 6. Vavrova A, et al. Catalytic inhibitors of topoisomerase II differently modulate the toxicity of anthracyclines in cardiac and cancer cells. PLoS One. 2013, 8(10):e76676. 7. SW Langer, et al. Dexrazoxane is a potent and specific inhibitor of anthracycline induced subcutaneous lesions in mice. Annals of Oncology. 2001, 12: 405-4 |
溶解性: |
Soluble in DMSO、H2O |
保存条件: |
-20℃ |
配置溶液浓度参考: |
|
1mg |
5mg |
10mg |
1 mM |
3.282 ml |
16.408 ml |
32.816 ml |
5 mM |
0.656 ml |
3.282 ml |
6.563 ml |
10 mM |
0.328 ml |
1.641 ml |
3.282 ml |
50 mM |
0.066 ml |
0.328 ml |
0.656 ml |
|
注意: |
部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。 |