Cited by 1,046Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchPrion Diseases and Protein Misfolding

Amyloid β-Protein Fibrillogenesis

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Walsh, Dominic M., Hartley, Dean M., Kusumoto, Yoko, Fezoui, Youcef, Condron, Margaret M., Lomakin, Aleksey, Benedek, George B., Selkoe, Dennis J. +1 more·1999·Journal of Biological Chemistry

Abstract

Alzheimer's disease is characterized by extensive cerebral amyloid deposition. Amyloid deposits associated with damaged neuropil and blood vessels contain abundant fibrils formed by the amyloid beta-protein (Abeta). Fibrils, both in vitro and in vivo, are neurotoxic. For this reason, substantial effort has been expended to develop therapeutic approaches to control Abeta production and amyloidogenesis. Achievement of the latter goal is facilitated by a rigorous mechanistic understanding of the fibrillogenesis process. Recently, we discovered a novel intermediate in the pathway of Abeta fibril formation, the amyloid protofibril (Walsh, D. M., Lomakin, A., Benedek, G. B., Condron, M. M., and Teplow, D. B. (1997) J. Biol. Chem. 272, 22364-22372). We report here results of studies of the assembly, structure, and biological activity of these polymers. We find that protofibrils: 1) are in equilibrium with low molecular weight Abeta (monomeric or dimeric); 2) have a secondary structure characteristic of amyloid fibrils; 3) appear as beaded chains in rotary shadowed preparations examined electron microscopically; 4) give rise to mature amyloid-like fibrils; and 5) affect the normal metabolism of cultured neurons. The implications of these results for the development of therapies for Alzheimer's disease and for our understanding of fibril assembly are discussed.

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Crossref · 10.1074/jbc.274.36.25945

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65 of 65 references verified0 citation errors · 0 not checkable

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  • Oligomeric Aβ rather than fibril Aβ is regarded as the toxic species of this peptide.

    “oligomeric Aβ rather than fibril Aβ is regarded as the toxic species of this peptide [143,144,145,146].”

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Authors
Walsh, D. M., Hartley, D. M., Kusumoto, Y., Fezoui, Y., Condron, M. M., Lomakin, A., Benedek, G. B., Selkoe, D. J., & Teplow, D. B.
Affiliations
  • Brigham and Women's Hospital (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Teplow, David B.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1999-09
Volume
274
Issue
36
Pages
25945-25952
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2073516240
Cited by
1,046
References
65
Citations by year
2026: 5 · 2025: 10 · 2024: 14 · 2023: 15 · 2022: 18 · 2021: 20 · 2020: 24 · 2019: 13 · 2018: 23 · 2017: 26 · 2016: 39 · 2015: 43 · 2014: 38 · 2013: 34 · 2012: 58
FWCI
21.57
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Amgen
  • Brigham and Women's Hospital
  • Foundation for Neurologic Diseases
  • National Institutes of Health (5p01ag014366-05)
  • National Institute on Aging (1PO1 AG14366, 1RO1 AG12749, R01AG012749)
  • National Institute of Neurological Disorders and Stroke (R01NS038328, 1RO1 NS38328)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
Keywords
amyloid-beta, fibril formation, amyloid protofibrils, Alzheimer's disease, amyloid deposition, neurotoxicity, secondary structure, neuronal metabolism, amyloid fibril formation, Alzheimer's disease treatment
MeSH terms
Alzheimer Disease, Humans, Amyloid beta-Peptides, Protein Structure, Secondary, Protein Folding, Dimerization

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