Testing Synthetic Amyloid-β Aggregation Inhibitor Using Single Molecule Force Spectroscopy

TitleTesting Synthetic Amyloid-β Aggregation Inhibitor Using Single Molecule Force Spectroscopy
Publication TypeJournal Article
Year of Publication2014
AuthorsHane, F., B. Y. Lee, A. Petoyan, A. Rauk, and Z. Leonenko
JournalBiosensors and Bioelectronics
Start Page492
Date Published04/2014
Keywordsaggregation inhibitor, Alzheimer's disease, amyloid-β aggregation, fibril formation, molecular dynamics simulations, single molecule force spectroscopy

Alzheimer's disease is a neurodegenerative disease with no known cure and few effective treatment options. The principal neurotoxic agent is an oligomeric form of the amyloid-β peptide and one of the treatment options currently being studied is the inhibition of amyloid aggregation. In this work, we test a novel pseudopeptidic aggregation inhibitor designated as SG1. SG1 has been designed to bind at the amyloid-β self-recognition site and prevent amyloid-β from misfolding into β sheet. We used atomic force spectroscopy, a nanoscale measurement technique, to quantify the binding forces between two single amyloid peptide molecules. For the first time, we demonstrate that single molecule atomic force spectroscopy can be used to assess the effectiveness of amyloid aggregation inhibitors by measuring the experimental yield of binding and can potentially be used as a screening technique for quick testing of efficacy of inhibitor drugs for amyloid aggregation.

Refereed DesignationRefereed
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