This present invention relates to a polymer of γ-glutamyl transpeptidase catalyzing hydrolysis-induced charge reversal. The polymer comprises a γ-glutamyl transpeptidase-responsive element represented by Formula (I). When the polymer is used as drug carrier for anticancer drug, it can have a long circulation time in the blood, and can realize a charge reversal from negatively charged or the neutral to positively charged around the tumor blood vessel region, so that the positively charged polymer effectively penetrates deep into the tumor tissue, fast entering into the tumor cells, and greatly improves the therapeutic effect of the drug on the tumor. This overcomes the problems of slow diffusion of traditional polymer drug carriers in tumors and weak interaction with tumor cells, and has great significance in the field of anticancer treatment in the medical field.
本发明涉及一种催化
水解诱导电荷反转的γ-谷
氨酰转肽酶聚合物。该聚合物包括由式(I)表示的γ-谷
氨酰转肽酶响应元素。当该聚合物被用作抗癌药物的载体时,它可以在血液中具有长循环时间,并且可以实现从阴性或中性到肿瘤血管区域周围的正电荷反转,使得带正电荷的聚合物有效地深入肿瘤组织,快速进入肿瘤细胞,并极大地提高药物对肿瘤的治疗效果。这克服了传统聚合物药物载体在肿瘤中扩散缓慢和与肿瘤细胞相互作用弱的问题,在医学领域的抗癌治疗领域具有重要意义。