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Enrichment of immunoregulatory proteins in the biomolecular corona of nanoparticles within human respiratory tract lining fluid
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2016 (English)In: Nanomedicine: Nanotechnology, Biology and Medicine, ISSN 1549-9634, E-ISSN 1549-9642, Vol. 12, no 4, 1033-1043 p.Article in journal (Refereed) PublishedText
Abstract [en]

When inhaled nanoparticles deposit in the lungs, they transit through respiratory tract lining fluid (RTLF) acquiring a biomolecular corona reflecting the interaction of the RTLF with the nanomaterial surface. Label-free snapshot proteomics was used to generate semiquantitative profiles of corona proteins formed around silica (SiO2) and poly(vinyl) acetate (PVAc) nanoparticles in RTLF, the latter employed as an archetype drug delivery vehicle. The evolved PVAc corona was significantly enriched compared to that observed on SiO2 nanoparticles (698 vs. 429 proteins identified); however both coronas contained a substantial contribution from innate immunity proteins, including surfactant protein A, napsin A and complement (C1q and C3) proteins. Functional protein classification supports the hypothesis that corona formation in RTLF constitutes opsonisation, preparing particles for phagocytosis and clearance from the lungs. These data highlight how an understanding of the evolved corona is necessary for the design of inhaled nanomedicines with acceptable safety and tailored clearance profiles. From the Clinical Editor: Inhaled nanoparticles often acquire a layer of protein corona while they go through the respiratory tract. Here, the authors investigated the identity of these proteins. The proper identification would improve the understanding of the use of inhaled nanoparticles in future therapeutics. (C) 2016 Published by Elsevier Inc.

Place, publisher, year, edition, pages
2016. Vol. 12, no 4, 1033-1043 p.
Keyword [en]
Protein corona, Nanoparticle, Respiratory tract lining fluid, Plasma, Silica, Poly(vinyl) acetate, Proteomics
National Category
Nano Technology Other Medical Biotechnology
URN: urn:nbn:se:umu:diva-121464DOI: 10.1016/j.nano.2015.12.369ISI: 000375577300017PubMedID: 26767511OAI: diva2:941123
Available from: 2016-06-22 Created: 2016-06-02 Last updated: 2016-06-22Bibliographically approved

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Edwards, KatarinaBehndig, Annelie F.Blomberg, Anders
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