with greatly improved colloidal stability. The lipid and carboxylate‐modified nanoparticles containing 40 wt % drug caused S‐phase arrest and inhibited cell proliferation in pancreatic cancer cells at submicromolar concentrations similar to carrier‐free P1A1. The most striking feature of nanoparticle‐delivered P1A1 was that the payload did not escape from the acidified lysosomal vesicles into the cytoplasm
制备了大孔介孔
二氧化硅纳米粒子(MSN)并对其进行了功能化,以用作
铂ac啶(PA)抗癌药的高度健壮且
生物相容的递送平台。该材料显示了对亲
水性杂合性双离子[PtCl(en)(N- [acridin-9-ylaminoethyl] -N-甲基丙ion )]二
硝酸盐(P1A1)的高负载能力,并且在中性pH下几乎完全保留了有效负载。高
氯化物缓冲液。在模拟细胞溶酶体内部pH的酸性介质中,P1A1迅速,爆发状释放从纳米颗粒观察到。
磷脂双层中材料的涂层产生具有大大改善的胶体稳定性的纳米颗粒。脂质和
羧酸盐修饰的纳米颗粒含有40 wt%的药物,在亚微摩尔浓度下类似于无载体的P1A1,可导致S期阻滞并抑制胰腺癌细胞的细胞增殖。纳米颗粒递送的P1A1的最显着特征是有效载荷不会从酸化的溶酶体囊泡逃逸到细胞质中,而是被穿梭到核膜并释放到核中。