Influence of size and shape on the anatomical distribution of endotoxin-free gold nanoparticles

Talamini, L., Violato, M. B., Cai, Q., Monopoli, M., Kantner, K., Krpetic, Z. ORCID:, Perez-Potti, A., Cookman, J., Garry, D., Silveira, C. P., Boselli, L., Pelaz, B., Sechi, T., Cambier, S., Gutleb, A. C., Feliu, N., Yan, Y., Salmona, M., Parak, W. J., Dawson, K. A. and Bigini, P. 2017, 'Influence of size and shape on the anatomical distribution of endotoxin-free gold nanoparticles' , ACS Nano, 11 (6) , pp. 5519-5529.

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The transport and the delivery of drugs through nanocarriers is a great challenge of pharmacology. Since the production of liposomes to reduce the toxicity of doxorubicin in patients, a plethora of nanomaterials have been produced and characterized. Although it is widely known that elementary properties of nanomaterials influence their in vivo kinetics, such interaction is often poorly investigated in many preclinical studies. The present study aims to evaluate the actual effect of size and shape on the biodistribution of a set of gold nanoparticles (GNPs) after intravenous administration in mice. To this goal, quantitative data achieved by Inductively Coupled Plasma Mass Spectrometry and observational results emerging from histochemistry (autometallography and enhanced dark field hyperspectral microscopy) were combined. Since the immune system plays a role in bio-nano interaction we used healthy immune-competent mice. To keep the immune-surveillance on the physiological levels we synthesized endotoxin-free GNPs to be tested in specific pathogen free animals. Our study mainly reveals that: a) the size and the shape greatly influence the kinetics of accumulation and excretion of GNPs in filter organs; b) spherical and star-like GNPs showed the same percentage of accumulation, but a different localization in liver; c) only star-like GNPs are able to accumulate in lung; d) changes in the geometry did not improve the passage of the blood brain barrier. Overall, this study can be considered as a reliable starting point to drive the synthesis and the functionalization of potential candidates for theranostic purposes in many fields of research.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Biomedical Research Centre
Journal or Publication Title: ACS Nano
Publisher: ACS Publications
ISSN: 1936-0851
Related URLs:
Funders: European Commission, Science Foundation Ireland, Science Foundation Ireland, European Commission, European Commission, Science Foundation Ireland, Chinese Scholarship Council, Irish Research Council, Ministry of Science, Technology and Innovation of Brazil
Depositing User: Dr Zeljka Krpetic
Date Deposited: 09 Jun 2017 12:39
Last Modified: 15 Feb 2022 22:05

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