Cited by 46Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Comparative pathobiology of β-amyloid and the unique susceptibility of humans to Alzheimer's disease

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Rosen, Rebecca F., Tomidokoro, Yasushi, Farberg, Aaron S., Dooyema, Jeromy, Ciliax, Brian, Preuss, Todd M., Neubert, Thomas A., Ghiso, Jorge A. +2 more·2016·Neurobiology of Aging

Abstract

The misfolding and accumulation of the protein fragment β-amyloid (Aβ) is an early and essential event in the pathogenesis of Alzheimer's disease (AD). Despite close biological similarities among primates, humans appear to be uniquely susceptible to the profound neurodegeneration and dementia that characterize AD, even though nonhuman primates deposit copious Aβ in senile plaques and cerebral amyloid-β angiopathy as they grow old. Because the amino acid sequence of Aβ is identical in all primates studied to date, we asked whether differences in the properties of aggregated Aβ might underlie the vulnerability of humans and the resistance of other primates to AD. In a comparison of aged squirrel monkeys (Saimiri sciureus) and humans with AD, immunochemical and mass spectrometric analyses indicate that the populations of Aβ fragments are largely similar in the 2 species. In addition, Aβ-rich brain extracts from the brains of aged squirrel monkeys and AD patients similarly seed the deposition of Aβ in a transgenic mouse model. However, the epitope exposure of aggregated Aβ differs in sodium dodecyl sulfate-stable oligomeric Aβ from the 2 species. In addition, the high-affinity binding of (3)H Pittsburgh Compound B to Aβ is significantly diminished in tissue extracts from squirrel monkeys compared with AD patients. These findings support the hypothesis that differences in the pathobiology of aggregated Aβ among primates are linked to post-translational attributes of the misfolded protein, such as molecular conformation and/or the involvement of species-specific cofactors.

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Crossref · 10.1016/j.neurobiolaging.2016.04.019

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  • Squirrel monkeys have all major Aβ species that are present in the human brain, including Aβ1-40, Aβ1-42, Aβ1-34, Aβ4-40, Aβ4-42, AβN3pE and oxidized Aβ.

    “A recent mass spectrometry study showed that squirrel monkeys have all major Aβ species that are present in the human brain (including Aβ1–40, Aβ1–42, Aβ1–34, Aβ4–40, Aβ4–42, AβN3pE and oxidized Aβ)[125].”

    From Alzheimer's disease: experimental models and reality (2017) · cites this paper as [125]

  • Squirrel monkey Aβ oligomers likely have a different tertiary or quaternary structure from human species.

    “While squirrel monkey Aβ also formed SDS stable dimers and trimers similar to humans, these oligomers likely have a different tertiary or quaternary structure from human species [125].”

    From Alzheimer's disease: experimental models and reality (2017) · cites this paper as [125]

  • Squirrel monkey Aβ formed SDS stable dimers and trimers similar to humans.

    “While squirrel monkey Aβ also formed SDS stable dimers and trimers similar to humans, these oligomers likely have a different tertiary or quaternary structure from human species [125].”

    From Alzheimer's disease: experimental models and reality (2017) · cites this paper as [125]

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Research works printed but not linked: 3

  1. Kim J Onstead L Randle S Price R Smithson L Zwizinski C Dickson DW Golde T McGowan E Abeta40 inhibits amyloid deposition in vivo. J Neurosci 2007 27 3 627 33 17234594 PMC6672801
  2. Selkoe DJ Terry RD R.K. Bick KL Sisodia SS Biology of beta-amyloid precursor protein and the mechanism of Alzheimer disease. Alzheimer Disease 1999 293 310 Lippincott Williams and Wilkins Philadelphia
  3. Walker LC Cork LC Terry RD The neurobiology of aging in nonhuman primates. Alzheimer Disease 1999 233 43 Lippincott Williams and Wilkins Philadelphia, PA

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Authors
Rosen, R. F., Tomidokoro, Y., Farberg, A. S., Dooyema, J., Ciliax, B., Preuss, T. M., Neubert, T. A., Ghiso, J. A., LeVine, H., & Walker, L. C.
Affiliations
  • Emory University (US)
  • NYU Langone Health (US)
  • University of Kentucky (US)
Corresponding author
  • Rosen, Rebecca F.
  • Walker, Lary C.
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
2016-08
Volume
44
Pages
185-196
ISSN
0197-4580 (ISSN-L)
OpenAlex
W2345680808
Cited by
46
References
127
Citations by year
2026: 3 · 2025: 6 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 9 · 2020: 8 · 2019: 1 · 2018: 4 · 2017: 6 · 2016: 2
FWCI
3.48
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Aging (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • MetLife Foundation (P51RR165, P51OD11132, R21NS077049, P30 NS050276, P50AG025688)
  • BrightFocus Foundation (P01AG026423, R21NS080576, R21AG051266)
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 › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta, Alzheimer's disease, squirrel monkey, Saimiri sciureus, amyloid fibril formation, epitope exposure, oligomeric amyloid, transgenic mouse model, amyloid plaques
MeSH terms
Aging, Alzheimer Disease, Animals, Brain, Disease Models, Animal, Disease Susceptibility, Humans, Mice, Transgenic, Saimiri, Amyloid beta-Peptides, Tauopathies

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