产品信息
抗原名称
Tubulin
商品描述
Fosbretabulin disodium is the disodium salt of a water-soluble phosphate derivative of a natural stilbenoid phenol derived from the African bush willow (Combretum caffrum) with potential vascular disrupting and antineoplastic activities.
分子量
440.29
纯度
>98%
可溶性
Water ：26 mg/mL (59.1 mM)
外观
白色至米色粉末
In vitro(体外研究)
Fosbretabulin disodium (Combretastatin A-4 phosphate disodium, CA4P disodium) is the water-soluble prodrug of combretastatin A4 (CA4), which is originally isolated from African tree Combretum caffrum. CA4 is a tubulin-binding agent that binds at or near the colchicine binding site of β-tubulin (Kd = 0.40 μM), inhibits tubulin assembly with IC50 of 2.4 μM. CA4 is cytotoxic towards proliferating but not quiescent endothelial cells, has potent and selective toxicity towards tumor vasculature. CA4P (1 mM, 30 minutes) disrupts the endothelial microtubule cytoskeleton and mediates changes in endothelial cell morphology. CA4P stimulates actin stress fiber formation and membrane blebbing and increases monolayer permeability via Rho/Rho-kinase. CA4P increases endothelial cell permeability, while inhibiting endothelial cell migration and capillary tube formation predominantly through disruption of VE-cadherin/β-catenin/Akt signaling pathway, thereby leading to rapid vascular collapse and tumor necrosis.
In vivo(体内研究)
CA4P causes rapid, extensive and irreversible vascular shutdown in experimental tumor models following the administration of a single dose at 10% of the maximum tolerated dose (MTD). CA4P causes a 93% reduction in vascular volume 6 h following drug administration. CA4P(100 mg/kg, 6 h following administration) reduces tumor blood by approximately 100-fold, compared with approximately 7-fold in the spleen.
背景
别名
康普瑞汀磷酸二钠；CA 4DP；CA 4P；Combretastatin A4 disodium phosphate
分子式
C18H19O8P·2Na
CAS号
168555-66-6
制备和贮存
保存方式
Store at -20℃ for one year（Powder）；Store at 2-4℃ for two weeks；Store at -20℃ for six months after dissolution.
参考图片
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