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POZylation: a new approach to enhance nanoparticle diffusion through mucosal barriers

Mansfield, E. D.H., Sillence, K., Hole, P., Williams, A. C. ORCID: and Khutoryanskiy, V. V. ORCID: (2015) POZylation: a new approach to enhance nanoparticle diffusion through mucosal barriers. Nanoscale, 7 (32). pp. 13671-13679. ISSN 2040-3364

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To link to this item DOI: 10.1039/C5NR03178H


The increasing use of nanoparticles in the pharmaceutical industry is generating concomitant interest in developing nanomaterials that can rapidly penetrate into, and permeate through, biological membranes to facilitate drug delivery and improve the bioavailability of active pharmaceutical ingredients. Here, we demonstrate that the permeation of thiolated silica nanoparticles through porcine gastric mucosa can be significantly enhanced by their functionalization with either 5 kDa poly(2-ethyl-2-oxazoline) or poly(ethylene glycol). Nanoparticle diffusion was assessed using two independent techniques; Nanoparticle Tracking Analysis, and fluorescence microscopy. Our results show that poly(2-ethyl-2-oxazoline) and poly(ethylene glycol) have comparable abilities to enhance diffusion of silica nanoparticles in mucin dispersions and through the gastric mucosa. These findings provide a new strategy in the design of nanomedicines, by surface modification or nanoparticle core construction, for enhanced transmucosal drug delivery.

Item Type:Article
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Optical Spectroscopy (CAF)
Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Thermal Analysis (CAF)
Life Sciences > School of Chemistry, Food and Pharmacy > School of Pharmacy > Pharmaceutics Research Group
ID Code:41110
Publisher:The Royal Society of Chemistry


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