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Gold nanoparticle interactions in human blood: a model evaluation.

Ajdari, N; Vyas, C; Bogan, SL; Lwaleed, BA; Cousins, BG; (2017) Gold nanoparticle interactions in human blood: a model evaluation. Nanomedicine 10.1016/j.nano.2017.01.019. (In press). Green open access

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Abstract

In this study, we investigated gold nanoparticle (AuNP) interactions in blood using thromboelastography as a rapid screening tool to monitor their influence on blood coagulation. 1.2 nM colloidal AuNPs ranging from 12 to 85 nm have no effect in the blood, however, 5 nM AuNPs demonstrate pro-thrombogenic concentration dependent effects with a reduction in clot formation. Size effects exhibit a non-linear trend with 45 and 85 nm particles resulting in a faster pro-thrombotic response. Clot strength decreased with AuNP size with the greatest reduction with 28 nm particles. We assessed AuNP interactions in the blood focusing on their biological activity. AuNP-RGD possessed pro-coagulant activities, while PEG-thiol, human fibrinogen and clopidogrel prevented blood clot formation and influenced platelet activity, and were more efficient when bound to nanocarriers than unbound ligands. Such tests could fill the knowledge gaps in thrombogenicity of NPs between in vitro test methods and predict in vivo haemocompatibility.

Type: Article
Title: Gold nanoparticle interactions in human blood: a model evaluation.
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nano.2017.01.019
Publisher version: http://dx.doi.org/10.1016/j.nano.2017.01.019
Language: English
Additional information: © 2017 The Author. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords: Blood coagulation, Gold nanoparticles, Haemocompatibility, Protein corona, Thromboelastography, Thrombogenicity
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci > Department of Surgical Biotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/1544758
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