Issue 19, 2013

Specific biomolecule corona is associated with ring-shaped organization of silver nanoparticles in cells

Abstract

We correlate the localization of silver nanoparticles inside cells with respect to the cellular architecture with the molecular information in the vicinity of the particle surface by combining nanoscale 3D cryo-soft X-ray tomography (cryo-SXT) with surface-enhanced Raman scattering (SERS). The interaction of the silver nanoparticle surface with small molecules and biopolymers was monitored by SERS in vitro over time in living cells. The spectra indicate a stable, time-independent surface composition of silver nanoparticles, despite the changing environment in the endosomal structure. Cryo-SXT reveals a characteristic ring-shaped organization of the silver nanoparticles in endosomes of different cell types. The ring-like structures inside the endosomes suggest a strong association among silver particles and with membrane structures. The comparison of the data with those obtained with gold nanoparticles suggests that the interactions between the nanoparticles and with the endosomal component are influenced by the molecular composition of the corona.

Graphical abstract: Specific biomolecule corona is associated with ring-shaped organization of silver nanoparticles in cells

Supplementary files

Article information

Article type
Paper
Submitted
28 Apr 2013
Accepted
17 Jul 2013
First published
19 Jul 2013

Nanoscale, 2013,5, 9193-9198

Specific biomolecule corona is associated with ring-shaped organization of silver nanoparticles in cells

D. Drescher, P. Guttmann, T. Büchner, S. Werner, G. Laube, A. Hornemann, B. Tarek, G. Schneider and J. Kneipp, Nanoscale, 2013, 5, 9193 DOI: 10.1039/C3NR02129G

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