Competitive Mirror Image Phage Display Derived Peptide Modulates Amyloid Beta Aggregation and Toxicity

Stephan Rudolph, Antonia Nicole Klein, Markus Tusche, Christine Schlosser, Anne Elfgen, Oleksandr Brener, Charlotte Teunissen, Lothar Gremer, Susanne Aileen Funke, Janine Kutzsche, Dieter Willbold

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Alzheimer Ls disease is the most prominent type of dementia and currently no causative treatment is available. According to recent studies, oligomeric species of the amyloid beta (Aβ) peptide appear to be the most toxic Aβ assemblies. Aβ monomers, however, may be not toxic per se and may even have a neuroprotective role. Here we describe a competitive mirror image phage display procedure that allowed us to identify preferentially Aβ1-42 monomer binding and thereby stabilizing peptides, which destabilize and thereby eliminate toxic oligomer species. One of the peptides, called Mosd1 (monomer specific d-peptide 1), was characterized in more detail. Mosd1 abolished oligomers from a mixture of Aβ1-42 species, reduced Aβ1-42 toxicity in cell culture, and restored the physiological phenotype in neuronal cells stably transfected with the gene coding for human amyloid precursor protein.

Original languageEnglish
Article numbere0147470
JournalPLoS ONE
Volume11
Issue number2
DOIs
Publication statusPublished - 1 Feb 2016

Cite this

Rudolph, S., Klein, A. N., Tusche, M., Schlosser, C., Elfgen, A., Brener, O., ... Willbold, D. (2016). Competitive Mirror Image Phage Display Derived Peptide Modulates Amyloid Beta Aggregation and Toxicity. PLoS ONE, 11(2), [e0147470]. https://doi.org/10.1371/journal.pone.0147470