College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
College of Traditional Chinese Medicine, Jilin Agricultural Science and Technology University, Jilin, 132109, China.
Biochem Biophys Res Commun. 2021 Jan 1;534:902-907. doi: 10.1016/j.bbrc.2020.10.076. Epub 2020 Nov 5.
Glioma is the most typical malignant brain tumor, and the chemotherapy to glioma is limited by poor permeability for crossing blood-brain-barrier (BBB) and insufficient availability. In this study, angiopep-2 modified lipid-coated mesoporous silica nanoparticle loading paclitaxel (ANG-LP-MSN-PTX) was developed to transport paclitaxel (PTX) across BBB mediated by low-density lipoprotein receptor-related protein 1 (LRP1), which is over-expressed on both BBB and glioma cells. ANG-LP-MSN-PTX was characterized with homogeneous hydrodynamic size, high drug loading capacity (11.08%) and a sustained release. In vitro experiments demonstrated that the targeting efficiency of PTX was enhanced by ANG-LP-MSN-PTX with higher penetration ability (10.74%) and causing more C6 cell apoptosis. ANG-LP-MSN-PTX (20.6%) revealed higher targeting efficiency compared with LP-MSN-PTX (10.6%) via blood and intracerebral microdialysis method in the pharmacokinetic study. The therapy of intracranial C6 glioma bearing rats was increasingly efficient, and ANG-LP-MSN-PTX could prolong the survival time of model rats. Taken together, ANG-LP-MSN-PTX might hold great promise as a targeting delivery system for glioma treatment.
神经胶质瘤是最典型的恶性脑肿瘤,针对神经胶质瘤的化疗受到血脑屏障(BBB)通透性差和利用率不足的限制。在这项研究中,开发了载紫杉醇的载脂蛋白-2 修饰的脂质包覆介孔硅纳米粒子(ANG-LP-MSN-PTX),以通过在 BBB 和神经胶质瘤细胞上过表达的低密度脂蛋白受体相关蛋白 1(LRP1)介导将紫杉醇(PTX)转运穿过 BBB。ANG-LP-MSN-PTX 的特点是均一的水动力粒径、高载药能力(11.08%)和持续释放。体外实验表明,ANG-LP-MSN-PTX 增强了 PTX 的靶向效率,具有更高的穿透能力(10.74%),并导致更多的 C6 细胞凋亡。通过血脑微透析法的药代动力学研究表明,与 LP-MSN-PTX(10.6%)相比,ANG-LP-MSN-PTX(20.6%)具有更高的靶向效率。颅内 C6 神经胶质瘤荷瘤大鼠的治疗效果逐渐提高,ANG-LP-MSN-PTX 可以延长模型大鼠的存活时间。综上所述,ANG-LP-MSN-PTX 可能是一种很有前途的用于治疗神经胶质瘤的靶向递药系统。