Colloidal Stability and Surface Chemistry Are Key Factors for the Composition of the Protein Corona of Inorganic Gold Nanoparticles. (26th September 2017)

• Record Type: Journal Article
• Authors: Johnston, Blair D.; Kreyling, Wolfgang G.; Pfeiffer, Christian; Schäffler, Martin; Sarioglu, Hakan; Ristig, Simon; Hirn, Stephanie; Haberl, Nadine; Thalhammer, Stefan; Hauck, Stefanie M.; Semmler‐Behnke, Manuela; Epple, Matthias; Hühn, Jonas; Del Pino, Pablo; Parak, Wolfgang J.
• Is Part Of: Advanced functional materials. Volume 27:Number 42(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-09-26
• Subjects: colloidal stability -- gold nanoparticles -- protein coronas -- surface chemistry dependence; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201701956
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: To study the influence of colloidal stability on protein corona formation, gold nanoparticles are synthesized with five distinct surface modifications: coating with citric acid, bis( p ‐sulfonatophenyl)phenylphosphine dihydrate dipotassium salt, thiol‐terminated methoxy‐polyethylene glycol, dodecylamine‐grafted poly(isobutylene‐ alt ‐maleic anhydride), and dodecylamine‐grafted poly(isobutylene‐ alt ‐maleic anhydride) conjugated with polyethylene glycol. The nanoparticles are incubated with serum or bronchoalveolar lavage fluid from C57BL/6 mice (15 min or 24 h) to assess the effect of differential nanoparticle surface presentation on protein corona formation in the air–blood barrier exposure pathway. Proteomic quantification and nanoparticle size measurements are used to assess protein corona formation. We show that surface modification has a clear effect on the size and the composition of the protein corona that is related to the colloidal stability of the studied nanoparticles. Additionally, differences in the composition and size of the protein corona are shown between biological media and duration of exposure, indicating evolution of the corona through this exposure pathway. Consequently, a major determinant of protein corona formation is the colloidal stability of nanoparticles in biological media and chemical or environmental modification of the nanoparticles alters the surface presentation of the functional epitope in vivo. Therefore, the colloidal stability of nanoparticles has a decisive influence on nano–bio interactions. Abstract : Colloidal stability effects on protein corona formation using 5 nm gold nanoparticles (Au NPs) with five distinct surface modifications are investigated. NPs are incubated with serum or bronchoalveolar lavage from C57BL/6 mice for 15 min or 24 h. Proteomic quantification and NP size measurements demonstrate that the colloidal stability of NPs is a major determinant of protein corona formation and evolution in biological media.