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Interaction of beta-Amyloid Interactions with Peptide Functionalized Gold Nanoparticles
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry.
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2012 (English)In: Journal of Nanoscience and Nanotechnology, ISSN 1533-4880, E-ISSN 1533-4899, Vol. 12, no 3, 2179-2184 p.Article in journal (Refereed) Published
Abstract [en]

The physicochemical properties of gold nanoparticles (GNPs) functionalized with peptides and N-methylated peptides were studied with respect to their interaction with beta-amyloid (1-42). Peptides with sequences of CGGIGLMVG and CGGGGGIGLMVG linked with GNPs of an average diameter of 13 nm were employed for this study. The peptide-GNPs were found to be soluble and dispersed at pH 7.4 in a sodium phosphate aqueous buffer solution. The resonance spectra of each peptide coated GNP was measured in the absence and presence of beta-amyloid (1-42). The difference in the intensity of the lambda(max) of the resonance absorption bands was attributed to the interaction of the functionalized GNPs with the protein. Particles bearing the CGGGGGIGLMVG sequence exhibited the largest change in lambda(max) intensity; the prevention of fibril formation and inhibition of cytotoxicity was also examined.

Place, publisher, year, edition, pages
2012. Vol. 12, no 3, 2179-2184 p.
Keyword [en]
Gold Nanoparticles (GNPs), Peptides, Resonance Spectroscopy, beta-Amyloid (A beta)
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-178929DOI: 10.1166/jnn.2012.5791ISI: 000305039700062OAI: oai:DiVA.org:uu-178929DiVA: diva2:542840
Available from: 2012-08-03 Created: 2012-08-02 Last updated: 2017-12-07Bibliographically approved

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Arvidsson, Per I.

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