Targeting and Treatment of Tumor Hypoxia by Newly Designed Prodrug Possessing High Permeability in Solid Tumors
作者:Yutaka Ikeda、Hikaru Hisano、Yuji Nishikawa、Yukio Nagasaki
DOI:10.1021/acs.molpharmaceut.6b00011
日期:2016.7.5
cancer, is known to lead to resistance to radiotherapy and anticancer chemotherapy. Impaired drug penetration in hypoxic regions has been recognized as an essential barrier to drug development in solid tumors. Here, we propose novel hypoxia-activated prodrugs, which drastically improved the penetration property of commonly used anticancer drugs in the hypoxic region. In this design, conventional anticancer
肿瘤缺氧与癌症的预后不良有关,已知会导致对放射疗法和抗癌化学疗法的抵抗。缺氧区域的药物渗透受损已被认为是实体瘤药物开发的基本障碍。在这里,我们提出了一种新型的缺氧激活前药,可以显着改善缺氧区域常用抗癌药物的渗透性。在这种设计中,常规的抗癌药物用2-硝基咪唑衍生物进行了修饰。这项研究最重要的一点是,设计的前药形成了一个六元环状结构,以允许活性药物在缺氧区域内释放。这种设计显着提高了以缺氧为目标的前药的选择性,从而显着降低了常氧区域中的不良反应。体外研究证实了在低氧条件下的选择性激活。体内研究表明,与传统抗癌药物相关的不良反应大大减少,小鼠存活率提高。免疫荧光分析证实,与仅位于常氧区的常规抗癌药物相比,所设计的前药具有定位于低氧区的趋势。