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  • Magnetically Controllable Polymer Nanotubes from a Cyclized Crosslinker for Site-Specific Delivery of Doxorubicin.

Magnetically Controllable Polymer Nanotubes from a Cyclized Crosslinker for Site-Specific Delivery of Doxorubicin.

Scientific reports (2015-12-02)
Ben Newland, Daniel Leupelt, Yu Zheng, Laurent S V Thomas, Carsten Werner, Martin Steinhart, Wenxin Wang
ABSTRACT

Externally controlled site specific drug delivery could potentially provide a means of reducing drug related side effects whilst maintaining, or perhaps increasing therapeutic efficiency. The aim of this work was to develop a nanoscale drug carrier, which could be loaded with an anti-cancer drug and be directed by an external magnetic field. Using a single, commercially available monomer and a simple one-pot reaction process, a polymer was synthesized and crosslinked within the pores of an anodized aluminum oxide template. These polymer nanotubes (PNT) could be functionalized with iron oxide nanoparticles for magnetic manipulation, without affecting the large internal pore, or inherent low toxicity. Using an external magnetic field the nanotubes could be regionally concentrated, leaving areas devoid of nanotubes. Lastly, doxorubicin could be loaded to the PNTs, causing increased toxicity towards neuroblastoma cells, rendering a platform technology now ready for adaptation with different nanoparticles, degradable pre-polymers, and various therapeutics.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Hexane, HPLC Plus, for HPLC, GC, and residue analysis, ≥95%
Sigma-Aldrich
Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size, 5 mg/mL in toluene
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Iron oxide(II,III), magnetic nanoparticles solution, 10 nm avg. part. size, 5 mg/mL in toluene
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Iron(II,III) oxide, 99.99% trace metals basis
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Copper(II) chloride, 99.999% trace metals basis
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Iron(II,III) oxide, powder, <5 μm, 95%
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Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size, 5 mg/mL in H2O
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Iron oxide(II,III), magnetic nanoparticles solution, 20 nm avg. part. size, 5 mg/mL in H2O
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Dichloromethane, anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer
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Hexane, puriss. p.a., ACS reagent, ≥99.0% (GC)
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Supelco
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Copper(II) chloride, powder, 99%
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Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size (TEM), amine functionalized, 1 mg/mL Fe in H2O, dispersion
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Hexane, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (GC)
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Dichloromethane, ACS reagent, ≥99.5%, contains 40-150 ppm amylene as stabilizer
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2-Butanone, ACS reagent, ≥99.0%
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