Cited by 1,471Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

An Increased Percentage of Long Amyloid β Protein Secreted by Familial Amyloid β Protein Precursor (βApp 717 ) Mutants

Suzuki, Nobuhiro, Cheung, Tobun T., Cai, Xiao-Dan, Odaka, Asano, Otvos, Laszlo, Eckman, Christopher, Golde, Todd E., Younkin, Steven G.·1994·Science

Abstract

Normal processing of the amyloid β protein precursor (βAPP) results in secretion of a soluble 4-kilodalton protein essentially identical to the amyloid β protein (Aβ) that forms insoluble fibrillar deposits in Alzheimer's disease. Human neuroblastoma (M17) cells transfected with constructs expressing wild-type βAPP or the βAPP 717 mutants linked to familial Alzheimer's disease were compared by (i) isolation of metabolically labeled 4-kilodalton Aβ from conditioned medium, digestion with cyanogen bromide, and analysis of the carboxyl-terminal peptides released, or (ii) analysis of the Aβ in conditioned medium with sandwich enzyme-linked immunosorbent assays that discriminate Aβ 1-40 from the longer Aβ 1-42 . Both methods demonstrated that the 4-kilodalton Aβ released from wild-type βAPP is primarily but not exclusively Aβ 1-40 . The βAPP 717 mutations, which are located three residues carboxyl to Aβ 43 , consistently caused a 1.5- to 1.9-fold increase in the percentage of longer Aβ generated. Long Aβ (for example, Aβ 1-42 ) forms insoluble amyloid fibrils more rapidly than Aβ 1-40 . Thus, the βAPP 717 mutants may cause Alzheimer's disease because they secrete increased amounts of long Aβ, thereby fostering amyloid deposition.

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Registry

Crossref · 10.1126/science.8191290

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6 of 6 references verified0 citation errors · 0 not checkable

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  • The sandwich ELISAs used specifically detect Aβs ending at Aβ40 or at Aβ42(43).

    “The monoclonal antibodies employed were BAN-50 (anti-A{31-16), 4G8 (anti-Af3l7-24) (19), BA-27, which is specific for A{3 ending at A{340, and BC-05, which is specific for A{3 ending at A{342(43).”

    From Amyloid β Protein (Aβ) in Alzheimeri's Disease Brain (1995) · cites this paper as [9]

  • β-APP mutations (AI, AF) linked to familial AD increase the percentage of long Aβ1-42(43) secreted.

    “Moreover, we have recently used transfected cultured cells to show that (3-APP mutations (AI, AF) linked to familial AD increase the percentage of long A{31-42(43) secreted (9).”

    From Amyloid β Protein (Aβ) in Alzheimeri's Disease Brain (1995) · cites this paper as [9]

  • Aβs ending at Aβ42(43) are a minor component of the Aβ in human cerebrospinal fluid and plasma.

    “These observations indicate that Aps ending at Ap42(43), which are a minor component of the Ap in human cerebrospinal fluid and”

    From Amyloid β Protein (Aβ) in Alzheimeri's Disease Brain (1995) · cites this paper as [9]

  • Aβs ending at Aβ42(43) are critically important in AD where they deposit selectively in plaques of all kinds.

    “These observations indicate that Aps ending at Ap42(43), which are a minor component of the Ap in human cerebrospinal fluid and plasma, are critically important in AD where they deposit selectively in plaques of all kinds.”

    From Amyloid β Protein (Aβ) in Alzheimeri's Disease Brain (1995) · cites this paper as [9]

  • Secreted Aβ is readily detected in CSF, plasma, and medium conditioned by a wide variety of cultured cells.

    “Secreted A␤ is readily detected in CSF, plasma, and in medium conditioned by a wide variety of cultured cells”

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Authors
Suzuki, N., Cheung, T. T., Cai, X.-D., Odaka, A., Otvos, L., Eckman, C., Golde, T. E., & Younkin, S. G.
Affiliations
  • Takeda (Japan) (JP)
  • Case Western Reserve University (US)
  • Wistar Institute of Anatomy and Biology, Philadelphia, PA 19104, USA.
Venue
Science
Published
1994-05-27
Volume
264
Issue
5163
Pages
1336-1340
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1980906872
Cited by
1,471
References
6
Citations by year
2026: 8 · 2025: 18 · 2024: 23 · 2023: 19 · 2022: 27 · 2021: 12 · 2020: 28 · 2019: 23 · 2018: 27 · 2017: 27 · 2016: 23 · 2015: 27 · 2014: 27 · 2013: 33 · 2012: 45
FWCI
67.37
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (AG06656, R01AG006656)
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, amyloid precursor protein, familial Alzheimer's disease, amyloid fibril formation, amyloid deposition, carboxyl-terminal peptide, neuroblastoma cells
MeSH terms
Alzheimer Disease, Enzyme-Linked Immunosorbent Assay, Humans, Mutation, Neuroblastoma, Transfection, Tumor Cells, Cultured, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Culture Media, Conditioned

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