Protein adsorption on nanoparticles: Model development using computer simulation

Qing Shao, Carol K. Hall

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The adsorption of proteins on nanoparticles results in the formation of the protein corona, the composition of which determines how nanoparticles influence their biological surroundings. We seek to better understand corona formation by developing models that describe protein adsorption on nanoparticles using computer simulation results as data. Using a coarse-grained protein model, discontinuous molecular dynamics simulations are conducted to investigate the adsorption of two small proteins (Trp-cage and WW domain) on a model nanoparticle of diameter 10.0 nm at protein concentrations ranging from 0.5 to 5 mM. The resulting adsorption isotherms are well described by the Langmuir, Freundlich, Temkin and Kiselev models, but not by the Elovich, Fowler-Guggenheim and Hill-de Boer models. We also try to develop a generalized model that can describe protein adsorption equilibrium on nanoparticles of different diameters in terms of dimensionless size parameters. The simulation results for three proteins (Trp-cage, WW domain, and GB3) on four nanoparticles (diameter = 5.0, 10.0, 15.0, and 20.0 nm) illustrate both the promise and the challenge associated with developing generalized models of protein adsorption on nanoparticles.

Original languageEnglish
Article number414019
JournalJournal of Physics Condensed Matter
Volume28
Issue number41
DOIs
StatePublished - Aug 22 2016

Bibliographical note

Publisher Copyright:
© 2016 IOP Publishing Ltd.

Keywords

  • adsorption model
  • discontinuous molecular dynamics simulation
  • protein corona

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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