Cited by 569Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Generation of beta-amyloid in the secretory pathway in neuronal and nonneuronal cells.

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Busciglio, J, Gabuzda, D H, Matsudaira, P, Yankner, B A·1993·Proceedings of the National Academy of Sciences

Abstract

The cellular mechanism underlying the generation of beta-amyloid in Alzheimer disease and its relationship to the normal metabolism of the amyloid precursor protein are unknown. In this report, we show that 3- and 4-kDa peptides derived from amyloid precursor protein are normally secreted. Epitope mapping and radiolabel sequence analysis suggest that the 4-kDa peptide is closely related to full-length beta-amyloid and the 3-kDa species is a heterogeneous set of peptides truncated at the beta-amyloid N terminus. The beta-amyloid peptides are secreted in parallel with amyloid precursor protein. Inhibitors of Golgi processing inhibit secretion of beta-amyloid peptides, whereas lysosomal inhibitors have no effect. The secretion of beta-amyloid-related peptides occurs in a wide variety of cell types, but which peptides are produced and their absolute levels are dependent on cell type. Human astrocytes generated higher levels of beta-amyloid than any other cell type examined. These results suggest that beta-amyloid is generated in the secretory pathway and provide evidence that glial cells are a major source of beta-amyloid production in the brain.

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Crossref · 10.1073/pnas.90.5.2092

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  • APP mutations occurring near the β-secretase cleavage site, such as the Swedish mutation (K670N/M671L), appear to result in increased production of total Aβ.

    “mutations occurring near the βsecretase cleavage site, such as the Swedish mutation (K670N/M671L), appear to result in increased production of total Aβ [34, 35].”

    From Genetic architecture of Alzheimer's disease (2020) · cites this paper as [34]

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Authors
Busciglio, J., Gabuzda, D. H., Matsudaira, P., & Yankner, B. A.
Affiliations
Harvard University (US)
Venue
Proceedings of the National Academy of Sciences
Published
1993-03
Volume
90
Issue
5
Pages
2092-2096
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1984996311
Cited by
569
References
4
Citations by year
2026: 5 · 2025: 8 · 2024: 9 · 2023: 3 · 2022: 8 · 2021: 8 · 2020: 7 · 2019: 7 · 2018: 9 · 2017: 14 · 2016: 18 · 2015: 2 · 2014: 5 · 2013: 8 · 2012: 5
FWCI
40.44
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Association
  • American Federation for Aging Research
  • National Institutes of Health (5r29ag009229-05)
  • National Institute on Aging (AG09229)
  • National Institute of Neurological Disorders and Stroke (R01NS030352, NS30352)
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, Alzheimer's disease, secretory pathway, Golgi apparatus, protein secretion, astrocytes, glial cells, neurons, lysosomal inhibitors, epitope mapping
MeSH terms
Amino Acid Sequence, Animals, Astrocytes, Cells, Cultured, Chlorocebus aethiops, Golgi Apparatus, Lysosomes, Molecular Sequence Data, Neurons, Peptide Fragments, Recombinant Proteins, Solubility, Time Factors, Transfection, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, In Vitro Techniques

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