Uptake and transcytosis of functionalized superparamagnetic iron oxide nanoparticles in an in vitro blood brain barrier model
Date
2018
Authors
Ivask, A.
Pilkington, E.H.
Blin, T.
Käkinen, A.
Vija, H.
Visnapuu, M.
Quinn, J.F.
Whittaker, M.R.
Qiao, R.
Davis, T.P.
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Journal article
Citation
Biomaterials Science, 2018; 6(2):314-323
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Abstract
Two major hurdles in nanomedicine are the limited strategies for synthesizing stealth nanoparticles and the poor efficacy of the nanoparticles in translocating across the blood brain barrier (BBB). Here we examined the uptake and transcytosis of iron oxide nanoparticles (IONPs) grafted with biomimetic phosphorylcholine (PC) b rushes in an in vitro BBB model system, and compared them with bare, PEG or PC-PEG mixture grafted IONPs. Hyperspectral imaging indicated IONP co-localization with cells. Quantitative analysis with total reflection X-ray fluorescence spectrometry showed that after 24 h, 78% of PC grafted, 68-69% of PEG or PC-PEG grafted, and 30% of bare IONPs were taken up by the BBB. Transcytosis of IONPs was time-dependent and after 24 h, 16-17% of PC or PC-PEG mixture grafted IONPs had passed the BBB model, significantly more than PEG grafted or bare IONPs. These findings point out that grafting of IONPs with PC is a viable strategy for improving the uptake and transcytosis of nanoparticles.
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Data source: Supplementary information, http://www.rsc.org/suppdata/c7/bm/c7bm01012e/c7bm01012e1.pdf
Link to a related website: http://wrap.warwick.ac.uk/98814/1/WRAP-uptake-transcytosis-functionalized-superparamagnetic-iron-oxide-nanoparticles--Thomas-2018.pdf, Open Access via Unpaywall
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Copyright 2018 Royal Society of Chemistry