Magnetic targeting of nanoparticles across the intact blood-brain barrier.
Magnetic targeting of nanoparticles across the intact blood-brain barrier.
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DOI:
10.1016/j.jconrel.2012.09.021
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发表时间:
2012-11-28
期刊:
影响因子:
--
通讯作者:
Jin S
中科院分区:
文献类型:
--
作者:
Kong SD;Lee J;Ramachandran S;Eliceiri BP;Shubayev VI;Lal R;Jin S
Delivery of therapeutic or diagnostic agents across an intact blood–brain barrier (BBB) remains a major challenge. Here we demonstrate in a mouse model that magnetic nanoparticles (MNPs) can cross the normal BBB when subjected to an external magnetic field. Following a systemic administration, an applied external magnetic field mediates the ability of MNPs to permeate the BBB and accumulate in a perivascular zone of the brain parenchyma. Direct tracking and localization inside endothelial cells and in the perivascular extracellular matrix in vivo was established using fluorescent MNPs. These MNPs were inert and associated with low toxicity, using a non-invasive reporter for astrogliosis, biochemical and histological studies. Atomic force microscopy demonstrated that MNPs were internalized by endothelial cells, suggesting that trans-cellular trafficking may be a mechanism for the MNP crossing of the BBB observed. The silica-coated magnetic nanocapsules (SiMNCs) allow on-demand drug release via remote radio frequency (RF) magnetic field. Together, these results establish an effective strategy for regulating the biodistribution of MNPs in the brain through the application of an external magnetic field.
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影响因子:
3
作者:
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通讯作者:
Chang, Jin
影响因子:
7.4
作者:
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通讯作者:
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影响因子:
11.4
作者:
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通讯作者:
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DOI:
10.1602/neurorx.2.1.108
发表时间:
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期刊:
NeuroRx : the journal of the American Society for Experimental NeuroTherapeutics
影响因子:
--
作者:
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通讯作者:
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影响因子:
17.1
作者:
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通讯作者:
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