A methotrexate (MTX)-layered double hydroxide (LDH) hybrid have been developed as a drug delivery system, in which an anticancer drug, MTX, was intercalated into a 2-dimensional LDH nanovehicle to form a nanohybrid. According to the comparative cell viability studies between MTX only and its LDH nanohybrid on MTX sensitive and resistant cell culture lines, it was found that the MTX-LDH nanohybrid could bypass the MTX resistance and eventually inhibit cancer cell proliferation very effectively compared to free MTX, due to an enhanced permeability and retention effect of MTX-LDH nanoparticles even in dihydrofolate reductase-overexpressing MTX-resistant cells. This is definitely associated with the uptake mechanism via a clathrin-mediated endocytic pathway for the MTX-LDH nanohybrid particles, the same as for the LDH nanocarrier only, which is completely different from the cellular uptake mechanism for MTX only, the reduced folate carrier (RFC) and/or the folate receptor entries.
甲氨蝶呤(
MTX)层状双氢氧化物(LDH)杂化物已被开发为药物递送系统,其中抗癌药物
MTX被插入二维LDH纳米载体中形成纳米杂化物。根据仅
MTX与其LDH纳米杂化物在
MTX敏感和耐药
细胞培养系上的比较细胞活力研究,发现与游离
MTX相比,
MTX-LDH纳米杂化物可以绕过
MTX耐药性并最终非常有效地抑制癌细胞增殖。这是因为即使在二氢叶酸还原酶过表达的
MTX 抗性细胞中,
MTX-LDH 纳米颗粒也具有增强的渗透性和保留作用。这肯定与
MTX-LDH 纳米杂化颗粒通过网格蛋白介导的内吞途径的摄取机制有关,与仅 LDH 纳米载体相同,这与仅
MTX(还原叶酸载体)的细胞摄取机制完全不同。 RFC)和/或叶酸受体条目。