Methods and compositions for enhancing the ability of hypoxia-activated bioreductive agents to kill tumor cells within solid tumors are provided. Local regions of hypoxia are created within a tumor, or within a region containing a tumor, resulting in enhanced activation of hypoxia-activated bioreductive agents (e.g. tirapazamine) within the local region. The activated hypoxia-activated bioreductive agents kill tumor cells in the hypoxic region by to catalyzing DNA stand breakage within the tumor cells. Because the activity is localized, side effects that typically occur as a result of systemic administration of bioreductive agents are reduced.
本文提供了增强缺氧激活
生物还原剂杀死实体瘤内肿瘤细胞能力的方法和组合物。 在肿瘤内或含有肿瘤的区域内形成局部缺氧区域,从而增强局部区域内缺氧激活的
生物还原剂(如替拉帕扎胺)的活化。 活化的缺氧活化
生物还原剂通过催化肿瘤细胞内的 DNA 支架断裂,杀死缺氧区域内的肿瘤细胞。 由于
生物还原剂的活性是局部的,因此可减少因全身使用
生物还原剂而产生的副作用。