Nanoparticle-infused-biodegradable-microneedles as drug-delivery systems: preparation and characterisation

Sully, Rachel E., Garelick, Hemda ORCID logoORCID:, Loizidou, Eriketi ORCID logoORCID:, Podoleanu, Adrian G. and Gubala, Vladimir (2021) Nanoparticle-infused-biodegradable-microneedles as drug-delivery systems: preparation and characterisation. Materials Advances, 2 (16) . pp. 5432-5442. ISSN 2633-5409 [Article] (doi:10.1039/D1MA00135C)

PDF - Published version (with publisher's formatting)
Download (4MB) | Preview
[img] PDF - Final accepted version (with author's formatting)
Restricted to Repository staff and depositor only

Download (1MB)


For almost two decades, scientists were exploring the use of nanoparticles as drug vesicles capable of protecting their cargo and deliver it to the target site while evading detection by the body. However, their translation to clinical use has been slower than expected. To a large degree, this is due to the difficulty to formulate the nanomaterial into a usable form, in which they retain their unique, size-dependent properties without aggregating into a bulk material. In this work, we describe a simple methodology for synthesising novel biodegradable microneedle systems infused with silica nanoparticles (SiNP). SiNP were doped with small library of model anti-cancer drugs or drug surrogates before being characterised and encapsulated into biodegradable microneedles. Detailed preparation and characterisation methods for both the nanoparticles and the microneedles-infused with nanoparticles is presented here. We demonstrated the distribution of the nanoparticles within the microneedle matrix in a uniform, un-aggregated form, which enabled the release of the nanoparticles in a sustained manner. Formulating nanomaterial into biodegradable, hydrogel-like microneedles showed to be effective in preserving their colloidal properties, whilst simultaneously enabling the transdermal delivery of the nanomaterial into the body. Although the concepts of nanoparticles and biodegradable microneedles have been researched individually, the combination of the two, to the best of our knowledge, offers a new pathway to nanomedicine-related applications.

Item Type: Article
Additional Information: This article can be cited before page numbers have been issued, to do this please use: R. E. Sully, H.
Garelick, E. Z. Loizidou, A. Podoleanu and V. Gubala, Mater. Adv., 2021, DOI: 10.1039/D1MA00135C.
Research Areas: A. > School of Science and Technology > Natural Sciences > Biophysics and Bioengineering group
Item ID: 33546
Notes on copyright: © Author(s). Open Access Article. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
Useful Links:
Depositing User: Erika Loizidou
Date Deposited: 16 Jul 2021 08:48
Last Modified: 29 Nov 2022 17:45

Actions (login required)

View Item View Item


Activity Overview
6 month trend
6 month trend

Additional statistics are available via IRStats2.