Peptidomimetics That Inhibit and Partially Reverse the Aggregation of Aβ1–42
Abstract
The peptide sequence KLVFF resembles the hydrophobic core of the Aβ peptide known to form amyloid plaques in Alzheimer’s disease. Starting from its retro-inverso peptide, we have synthesized three generations of peptidomimetics. Step by step natural amino acids have been replaced by aromatic building blocks accessible from the Pd-catalyzed Catellani reaction. The final compound 18 is stable against proteolytic decay and largely prevents the aggregation of Aβ 1–42 over extended periods of time. The activity of the new inhibitors was tested first by fluorescence correlation spectroscopy. For closer examination of compound 18, additional techniques were also applied: laser-induced liquid bead ion desorption mass spectrometry, confocal laser scanning microscopy, thioflavin T fluorescence, and gel electrophoresis. Compound 18 not only retards the aggregation of chemically synthesized Aβ but also can partially dissolve the oligomeric structures. Thioflavin binding mature fibrils, however, seem to resist the inhibitor.
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KLVFF is a peptide sequence that mimics the hydrophobic center region of Aβ and eventually replaces natural polypeptides; it is resistant to proteolytic degradation and can break down oligomerics to a limited level.
“Another promising treatment is KLVFF, a peptide sequence that mimics the hydrophobic center region of the Aβ and eventually replaces natural polypeptides. The KLVFF compound, which is resistant to proteolytic degradation and can also break down oligomerics to a limited level, is the final compound, can also break down oligomerics to a minor amount. (Stark et al., 2017).”
From An update on the novel and approved drugs for Alzheimer disease (2022) · cites this paper as Stark et al., 2017
KLVFF is a peptide sequence that resembles the hydrophobic central part of Aβ and gradually replaces natural polypeptides.
“KLVFF is a peptide sequence that resembles the hydrophobic central part of the Aβ and gradually replaces natural polypeptides.”
From Current and Future Treatments in Alzheimer Disease: An Update (2020) · cites this paper as [51]
Peptidomimetics that inhibit and partially reverse aggregation of Aβ42 are tested in transmission electron microscopic studies.
“Nowadays, specific agents in the form of peptidomimetics that inhibit and partially reverse the aggregation of Aβ42 are tested in transmission electron microscopic studies.”
From Current and Future Treatments in Alzheimer Disease: An Update (2020) · cites this paper as [51]
Compound 18 mainly prevents aggregation of Aβ42 and can also dissolve oligomerics to a limited extent; it is resilient in proteolytic decomposition.
“The KLVFF compound that mainly prevents the aggregation of Aβ42 and can also dissolve the oligomerics to a limited extend is the final compound 18, which is resilient in proteolytic decomposition.51”
From Current and Future Treatments in Alzheimer Disease: An Update (2020) · cites this paper as [51]
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- Authors
- Stark, T., Lieblein, T., Pohland, M., Kalden, E., Freund, P., Zangl, R., Grewal, R., Heilemann, M., Eckert, G. P., Morgner, N., & Göbel, M. W.
- Affiliations
- Goethe University Frankfurt (DE)
- Justus-Liebig-Universität Gießen (DE)
- Corresponding author
- Göbel, Michael W.
- Venue
- Biochemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-08-25
- Volume
- 56
- Issue
- 36
- Pages
- 4840-4849
- ISSN
- 0006-2960 (ISSN-L)
- 1520-4995
- OpenAlex
- W2750503782
- Cited by
- 17
- References
- 54
- Citations by year
- 2025: 1 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 4 · 2020: 3 · 2019: 1 · 2018: 1
- FWCI
- 1.01
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biochemistry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Deutsche Forschungsgemeinschaft (1986)
- European Commission (337567)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
- Health Sciences › Medicine › Pharmacology › Cholinesterase and Neurodegenerative Diseases
- Keywords
- peptidomimetics, amyloid-beta 42, peptide aggregation inhibition, Alzheimer's disease, KLVFF peptide, Catellani reaction, palladium-catalyzed cross-coupling, aromatic amino acid substitution, amyloid fibrils, thioflavin T binding, peptide stability
- MeSH terms
- Cell Line, Cell Survival, Humans, Peptide Fragments, Protein Binding, Molecular Structure, Amyloid beta-Peptides, Lactate Dehydrogenases, Cell Proliferation, Peptidomimetics
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