Synthetic nanoparticles functionalized with biomimetic leukocyte membranes possess cell-like functions.

Synthetic nanoparticles functionalized with biomimetic leukocyte membranes possess cell-like functions.
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DOI:
10.1038/nnano.2012.212
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发表时间:
2013-01
影响因子:
38.3
通讯作者:
--
中科院分区:
材料科学1区
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--
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全身性药物递送载体的治疗功效取决于它们逃避免疫系统、穿过身体的生物屏障和定位于靶组织的能力。白细胞具有所有这些功能,并通过细胞膜相互作用发挥其靶向能力。在这里,我们表明,纳米多孔硅颗粒(纳米硅)可以成功地执行所有这些行动时,从白色血细胞纯化的细胞膜涂层。这些被称为LeukoLike Vectors(LLV)的混合颗粒能够:防止免疫系统吞噬细胞的快速清除;通过受体-配体相互作用与内皮细胞通信;运输和释放有效载荷穿过发炎的重建内皮。此外,LLV在体内注射时保留了它们的功能,显示出循环时间的延长和肿瘤中积累的改善。
The therapeutic efficacy of systemic drug delivery vehicles depends on their ability to evade the immune system, cross the biological barriers of the body and localize at target tissues. Leukocytes possess all of these functions and exert their targeting ability through cellular membrane interactions. Here we show that NanoPorous Silicon particles (NPS) can successfully perform all these actions when coated with cellular membranes purified from white blood cells. These hybrid particles called LeukoLike Vectors (LLV) were able to: prevent rapid clearance of phagocytic cells of the immune system; communicate with endothelial cells through receptor-ligand interaction; transport and release a payload across an inflamed reconstructed endothelium. Furthermore, LLV retained their functions when injected in vivo, showing enhanced circulation time and improved accumulation in the tumour.
VCAM-1和ICAM-1与粘附白细胞的新型内皮对接结构中的动态相互作用。
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