Key Laboratory of Smart Drug Delivery, Ministry of Education & PLA, School of Pharmacy, Fudan University, Lane 826, Zhangheng Road, Shanghai 201203, China.
Biomaterials. 2012 Nov;33(32):8167-76. doi: 10.1016/j.biomaterials.2012.07.046. Epub 2012 Aug 11.
Therapeutic effect of glioma is often limited due to low permeability of delivery systems across the Blood-Brain Barrier (BBB) and poor penetration into the tumor tissue. In order to overcome the two barriers, we proposed Angiopep-conjugated PEG-PCL nanoparticles (ANG-PEG-NP) as a dual targeting drug delivery system for glioma treatment basing on low density lipoprotein receptor related protein (LRP) receptor not only over-expressed on BBB but also on glioma cells. This system could transport across BBB through LRP-mediated transcytosis and then targeted glioma via LRP-mediated endocytosis. In this study, we evaluated the preliminary availability and safety of ANG-PEG-NP for glioma treatment. The penetration, distribution, and accumulation into 3D glioma spheroid and in vivo glioma region of ANG-PEG-NP were obviously higher than that of plain PEG-PCL nanoparticles (PEG-NP). The anti-glioblastoma efficacy of paclitaxel (PTX) loading ANG-PEG-NP was significantly enhanced as compared to that of Taxol and PEG-NP. Preliminary safety results showed that no acute toxicity to hematological system, liver, kidney and brain tissue was observed after intravenous administration with a dose of 100 mg/kg blank ANG-PEG-NP per day for a week. Results indicate that Angiopep-conjugated dual targeting PEG-PCL nanoparticle is a potential brain targeting drug delivery system for glioma treatment.
由于递药系统穿越血脑屏障(BBB)的通透性低和难以渗透进入肿瘤组织,胶质瘤的治疗效果往往受到限制。为了克服这两个障碍,我们提出了载有 Angiopep 的聚乙二醇-聚己内酯纳米粒(ANG-PEG-NP)作为一种双重靶向药物递送系统,用于治疗基于低密度脂蛋白受体相关蛋白(LRP)受体的脑胶质瘤,LRP 受体不仅在 BBB 上过度表达,而且在神经胶质瘤细胞上也过度表达。该系统可以通过 LRP 介导的胞吞作用穿过 BBB 进行转运,然后通过 LRP 介导的内吞作用靶向神经胶质瘤。在本研究中,我们评估了 ANG-PEG-NP 用于治疗脑胶质瘤的初步可用性和安全性。ANG-PEG-NP 对 3D 神经胶质瘤球体的穿透、分布和积累以及体内神经胶质瘤区域明显高于普通聚乙二醇-聚己内酯纳米粒(PEG-NP)。与紫杉醇(PTX)负载 Taxol 和 PEG-NP 相比,载有紫杉醇的 ANG-PEG-NP 的抗神经胶质瘤功效显著增强。初步安全性结果表明,静脉注射 100mg/kg ANG-PEG-NP 空白纳米粒每天一次,连续一周,对血液系统、肝脏、肾脏和脑组织均无急性毒性。结果表明,载有 Angiopep 的双重靶向 PEG-PCL 纳米粒是一种用于治疗脑胶质瘤的潜在脑靶向药物递送系统。
J Control Release. 2012-3-3