The purpose of the invention is to provide a tumor sealant to be used for therapy that enables curative treatment, by improving an extremely simple, minimally-invasive therapy consisting of starving tumor cells without radiation exposure or causing serious side effects by drugs. The invention provides a tumor sealant that utilizes the EPR effect specific to tumor cells, that covers the tumor cells of each tissue by particles that permeate only tumor blood vessels and accumulate and settle in the tumor, that does not release angiogenesis-inducing factors, that does not separate tumor cells having improved mobility in a hypoxic state and move them to another location, that permeates gaps of from 50 nm to 500 nm of the tumor vascular endothelial cells, and that biodegrades after adhering to the tumor cells and extracellular matrix near the gaps.
本发明的目的是提供一种可用于治疗的肿瘤密封剂,通过改进一种极其简单的微创疗法,使肿瘤细胞处于饥饿状态,而无需接受辐射照射或通过药物引起严重的副作用,从而实现治愈性治疗。本发明提供了一种肿瘤密封剂,它利用肿瘤细胞特有的 EPR 效应,通过只渗透肿瘤血管的微粒覆盖各组织的肿瘤细胞,并在肿瘤内积聚和沉淀,不释放血管生成诱导因子、不释放血管生成诱导因子,不会分离缺氧状态下移动性增强的肿瘤细胞并将其转移到其他位置,可渗透肿瘤血管内皮细胞 50 纳米至 500 纳米的间隙,并在粘附到间隙附近的肿瘤细胞和细胞外基质后发生
生物降解。