Cited by 335Alzheimer's disease research and treatmentsPrion Diseases and Protein MisfoldingAmyloidosis: Diagnosis, Treatment, Outcomes

Soluble protein oligomers as emerging toxins in Alzheimer’s and other amyloid diseases

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Ferreira, Sergio T., Vieira, Marcelo N. N., De Felice, Fernanda G.·2007·IUBMB Life

Abstract

Amyloid diseases are a group of degenerative disorders characterized by cell/tissue damage caused by toxic protein aggregates. Abnormal production, processing and/or clearance of misfolded proteins or peptides may lead to their accumulation and to the formation of amyloid aggregates. Early histopathological investigation of affected organs in different amyloid diseases revealed the ubiquitous presence of fibrillar protein aggregates forming large deposits known as amyloid plaques. Further in vitro biochemical and cell biology studies, as well as studies using transgenic animal models, provided strong support to what initially seemed to be a solid concept, namely that amyloid fibrils played crucial roles in amyloid pathogenesis. However, recent studies describing tissue-specific accumulation of soluble protein oligomers and their strong impact on cell function have challenged the fibril hypothesis and led to the emergence of a new view: Fibrils are not the only toxins derived from amyloidogenic proteins and, quite possibly, not the most important ones with respect to disease etiology. Here, we review some of the recent findings and concepts in this rapidly developing field, with emphasis on the involvement of soluble oligomers of the amyloid-beta peptide in the pathogenesis of Alzheimer's disease. Recent studies suggesting that soluble oligomers from different proteins may share common mechanisms of cytotoxicity are also discussed. Increased understanding of the cellular toxic mechanisms triggered by protein oligomers may lead to the development of rational, effective treatments for amyloid disorders.

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Authors
Ferreira, S. T., Vieira, M. N. N., & De Felice, F. G.
Affiliations
Universidade Federal do Rio de Janeiro (BR)
Venue
IUBMB Life
Publisher
Wiley
Published
2007-01
Volume
59
Issue
4-5
Pages
332-345
ISSN
  • 1521-6543 (ISSN-L)
  • 1521-6551
OpenAlex
W2116489922
Cited by
335
References
162
Citations by year
2026: 4 · 2025: 5 · 2024: 13 · 2023: 5 · 2022: 7 · 2021: 9 · 2020: 10 · 2019: 10 · 2018: 22 · 2017: 13 · 2016: 22 · 2015: 28 · 2014: 23 · 2013: 23 · 2012: 27
FWCI
2.87
Type
journal article
Language
en
Open access
Locations
  • IUBMB Life (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Amyloidosis: Diagnosis, Treatment, Outcomes
Keywords
amyloidosis, Alzheimer's disease, amyloid-beta, protein aggregation, cytotoxicity, amyloid plaques, amyloid pathogenesis, transgenic animal models
MeSH terms
Alzheimer Disease, Animals, Calcium, Humans, Neurons, Proteins, Receptors, Cell Surface, Amyloid beta-Peptides, tau Proteins, Oxidative Stress, Protein Structure, Quaternary, Tauopathies

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