Cited by 150Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Enhanced Amyloidogenic Processing of the β-Amyloid Precursor Protein in Gene-targeted Mice Bearing the Swedish Familial Alzheimer's Disease Mutations and a “Humanized” Aβ Sequence

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Reaume, Andrew G., Howland, David S., Trusko, Stephen P., Savage, Mary J., Lang, Diane M., Greenberg, Barry D., Siman, Robert, Scott, Richard W.·1996·Journal of Biological Chemistry

Abstract

The processing of the beta-amyloid precursor protein (APP) in vivo has been characterized in a novel animal model that recapitulates, in part, the APP genotype of a familial form of Alzheimer's disease (AD). A gene-targeting strategy was used to introduce the Swedish familial AD mutations and convert mouse Abeta to the human sequence. The mutant APP is expressed at normal levels in brain, and cleavage at the mutant beta-secretase site is both accurate and enhanced. Furthermore, human Abeta production is significantly increased to levels 9-fold greater than those in normal human brain while nonamyloidogenic processing is depressed. The results on Abeta production extend similar findings obtained in cell culture to the brain of an animal and substantiate Abeta as a etiological factor in Swedish familial AD. These animals provide several distinguishing features over others created by conventional transgenic methodologies. The spatial and temporal expression patterns of human Abeta are expected to be faithfully reproduced because the gene encoding the mutant APP remains in its normal chromosomal context. Thus, the neuropathological consequences of human Abeta overproduction can be evaluated longitudinally in the absence of potential mitigating effects of APP overexpression or presence of the mouse Abeta peptide.

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Crossref · 10.1074/jbc.271.38.23380

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Authors
Reaume, A. G., Howland, D. S., Trusko, S. P., Savage, M. J., Lang, D. M., Greenberg, B. D., Siman, R., & Scott, R. W.
Corresponding author
Scott, Richard W.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1996-09
Volume
271
Issue
38
Pages
23380-23388
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2001834310
Cited by
150
References
69
Citations by year
2026: 2 · 2025: 6 · 2024: 4 · 2023: 2 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 6 · 2016: 2 · 2015: 3 · 2014: 7 · 2013: 7 · 2012: 8
FWCI
5.27
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
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 precursor protein, amyloidogenic processing, gene-targeted mice, animal models of Alzheimer's disease
MeSH terms
Alzheimer Disease, Animals, Base Sequence, Brain Chemistry, Chimera, Disease Models, Animal, Genotype, Humans, Molecular Sequence Data, Mutation, Peptide Fragments, Endopeptidases, Protein Processing, Post-Translational, Sweden, Aspartic Acid Endopeptidases, Amyloid beta-Protein Precursor, Gene Targeting, Mice, Amyloid Precursor Protein Secretases

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