Cited by 1,687Alzheimer's disease research and treatmentsPrion Diseases and Protein MisfoldingSupramolecular Self-Assembly in Materials

Self-Propagating, Molecular-Level Polymorphism in Alzheimer's ß-Amyloid Fibrils

Petkova, Aneta T., Leapman, Richard D., Guo, Zhihong, Yau, Wai-Ming, Mattson, Mark P., Tycko, Robert·2005·Science

Abstract

Amyloid fibrils commonly exhibit multiple distinct morphologies in electron microscope and atomic force microscope images, often within a single image field. By using electron microscopy and solid-state nuclear magnetic resonance measurements on fibrils formed by the 40-residue β-amyloid peptide of Alzheimer's disease (Aβ 1–40 ), we show that different fibril morphologies have different underlying molecular structures, that the predominant structure can be controlled by subtle variations in fibril growth conditions, and that both morphology and molecular structure are self-propagating when fibrils grow from preformed seeds. Different Aβ 1–40 fibril morphologies also have significantly different toxicities in neuronal cell cultures. These results have implications for the mechanism of amyloid formation, the phenomenon of strains in prion diseases, the role of amyloid fibrils in amyloid diseases, and the development of amyloid-based nano-materials.

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Crossref · 10.1126/science.1105850

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Authors
Petkova, A. T., Leapman, R. D., Guo, Z., Yau, W.-M., Mattson, M. P., & Tycko, R.
Affiliations
National Institutes of Health (US)
Corresponding author
Tycko, Robert
Venue
Science
Published
2005-01-14
Volume
307
Issue
5707
Pages
262-265
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2004098528
Cited by
1,687
References
31
Citations by year
2026: 34 · 2025: 43 · 2024: 45 · 2023: 57 · 2022: 47 · 2021: 72 · 2020: 67 · 2019: 74 · 2018: 92 · 2017: 84 · 2016: 93 · 2015: 73 · 2014: 93 · 2013: 114 · 2012: 102
FWCI
57.13
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
  • Physical Sciences › Materials Science › Biomaterials › Supramolecular Self-Assembly in Materials
Keywords
amyloid fibrils, beta-amyloid peptide, Aβ(1-40), Alzheimer's disease, fibril polymorphism, fibril morphology, self-propagation, amyloid toxicity, prion disease
MeSH terms
Animals, Cells, Cultured, Chemistry, Physical, Hippocampus, Humans, Hydrogen Bonding, Neurons, Peptide Fragments, Protein Conformation, Molecular Structure, Amyloid beta-Peptides, Protein Structure, Secondary, Microscopy, Atomic Force, Nuclear Magnetic Resonance, Biomolecular, Amino Acid Motifs, Microscopy, Electron, Transmission, Rats, Chemical Phenomena

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