Matrix metalloproteinase 2-sensitive multifunctional polymeric micelles for tumor-specific co-delivery of siRNA and hydrophobic drugs.

Matrix metalloproteinase 2-sensitive multifunctional polymeric micelles for tumor-specific co-delivery of siRNA and hydrophobic drugs.
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DOI:
10.1016/j.biomaterials.2014.01.060
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发表时间:
2014-04
期刊:
影响因子:
14
通讯作者:
Torchilin VP
Torchilin VP
中科院分区:
工程技术1区
文献类型:
--
作者:
Zhu L;Perche F;Wang T;Torchilin VP

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亲水性 siRNA 和疏水性药物的共同递送是基于纳米材料的医学的主要挑战之一。在这里,我们提出了一个简单但多功能的胶束平台,该平台由基质金属蛋白酶 2 (MMP2) 敏感的共聚物 (PEG-pp-PEI-PE) 通过自组装构建,用于肿瘤靶向 siRNA 和药物共递送。胶束纳米载体具有用于 siRNA 和药物递送的几个关键特征,包括 (i) 优异的稳定性; (ii) 通过 PEI 有效浓缩 siRNA; (iii) 疏水性药物在脂质“核心”中的溶解; (iv) 通过增强渗透性和保留(EPR)效应被动肿瘤靶向; (v)由上调的肿瘤MMP2触发的肿瘤靶向; (vi) MMP2 激活的先前隐藏的 PEI 暴露后细胞内化增强。这些协同功能确保了共载 siRNA 和药物的肿瘤靶向性提高、肿瘤细胞内化增强以及协同抗肿瘤活性。
Co-delivery of hydrophilic siRNA and hydrophobic drugs is one of the major challenges for nanomaterial-based medicine. Here, we present a simple but multifunctional micellar platform constructed by a matrix metalloproteinase 2 (MMP2)-sensitive copolymer (PEG-pp-PEI-PE) via self-assembly for tumor-targeted siRNA and drug co-delivery. The micellar nanocarrier possesses several key features for siRNA and drug delivery, including (i) excellent stability; (ii) efficient siRNA condensation by PEI; (iii) hydrophobic drug solubilization in the lipid “core”; (iv) passive tumor targeting via the enhanced permeability and retention (EPR) effect; (v) tumor targeting triggered by the up-regulated tumoral MMP2; and (vi) enhanced cell internalization after MMP2-activated exposure of the previously hidden PEI. These cooperative functions ensure the improved tumor targetability, enhanced tumor cell internalization, and synergistic antitumor activity of co-loaded siRNA and drug.
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