Issue 4, 2019

Metal-dependent inhibition of amyloid fibril formation: synergistic effects of cobalt–tannic acid networks

Abstract

Metal–phenolic networks (MPNs) have received widespread interest owing to their modular incorporation of functional metal ions and phenolic ligands. However, the interaction between MPNs and biomolecules is still relatively unexplored. Herein, we studied the effects of MPN-coated gold nanoparticles on amyloid fibril formation (which is associated with Alzheimer's disease) as a function of the metal ion in the MPN systems. All coated particles examined inhibited amyloid formation, with cobalt(II) MPN-coated particles exhibiting the highest inhibition activity (90%). Molecular dynamics simulations and quantum mechanics calculations suggested that the geometry of the exposed cobalt coordination site in the cobalt–tannic acid networks facilitates its interactions with histidine and methionine residues in the amyloid beta peptides. Furthermore, the unique structure of cobalt MPNs may enable a wider variety of biomedical applications.

Graphical abstract: Metal-dependent inhibition of amyloid fibril formation: synergistic effects of cobalt–tannic acid networks

Supplementary files

Article information

Article type
Paper
Submitted
15 noy 2018
Accepted
04 yan 2019
First published
15 yan 2019

Nanoscale, 2019,11, 1921-1928

Metal-dependent inhibition of amyloid fibril formation: synergistic effects of cobalt–tannic acid networks

W. Zhang, A. J. Christofferson, Q. A. Besford, J. J. Richardson, J. Guo, Y. Ju, K. Kempe, I. Yarovsky and F. Caruso, Nanoscale, 2019, 11, 1921 DOI: 10.1039/C8NR09221D

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