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Authors: Alberg, Irina
Kramer, Stefan
Leps, Christian
Tenzer, Stefan
Zentel, Rudolf
Title: Effect of core-crosslinking on protein corona formation on polymeric micelles
Online publication date: 17-Nov-2022
Year of first publication: 2021
Language: english
Abstract: Most nanomaterials acquire a protein corona upon contact with biological fluids. The magnitude of this effect is strongly dependent both on surface and structure of the nanoparticle. To define the contribution of the internal nanoparticle structure, protein corona formation of block copolymer micelles with poly(N-2-hydroxypropylmethacrylamide) (pHPMA) as hydrophilic shell, which are crosslinked—or not—in the hydrophobic core is comparatively analyzed. Both types of micelles are incubated with human blood plasma and separated by asymmetrical flow field-flow fractionation (AF4). Their size is determined by dynamic light scattering and proteins within the micellar fraction are characterized by gel electrophoresis and quantified by liquid chromatography-high-resolution mass spectrometry-based label-free quantitative proteomics. The analyses reveal only very low amounts of plasma proteins associated with the micelles. Notably, no significant enrichment of plasma proteins is detectable for core-crosslinked micelles, while noncrosslinked micelles show a significant enrichment of plasma proteins, indicative of protein corona formation. The results indicate that preventing the reorganization of micelles (equilibrium with unimers) by core-crosslinking is crucial to reduce the interaction with plasma proteins.
DDC: 540 Chemie
540 Chemistry and allied sciences
610 Medizin
610 Medical sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 04 Medizin
FB 09 Chemie, Pharmazie u. Geowissensch.
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY-NC
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Journal: Macromolecular bioscience
Pages or article number: 2000414
Publisher: Wiley-VCH
Publisher place: Weinheim
Issue date: 2021
ISSN: 1616-5195
Publisher DOI: 10.1002/mabi.202000414
Appears in collections:JGU-Publikationen

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