Cited by 122Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Rodent Aβ Modulates the Solubility and Distribution of Amyloid Deposits in Transgenic Mice

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Jankowsky, Joanna L., Younkin, Linda H., Gonzales, Victoria, Fadale, Daniel J., Slunt, Hilda H., Lester, Henry A., Younkin, Steven G., Borchelt, David R.·2007·Journal of Biological Chemistry

Abstract

The amino acid sequence of amyloid precursor protein (APP) is highly conserved, and age-related A beta aggregates have been described in a variety of vertebrate animals, with the notable exception of mice and rats. Three amino acid substitutions distinguish mouse and human A beta that might contribute to their differing properties in vivo. To examine the amyloidogenic potential of mouse A beta, we studied several lines of transgenic mice overexpressing wild-type mouse amyloid precursor protein (moAPP) either alone or in conjunction with mutant PS1 (PS1dE9). Neither overexpression of moAPP alone nor co-expression with PS1dE9 caused mice to develop Alzheimer-type amyloid pathology by 24 months of age. We further tested whether mouse A beta could accelerate the deposition of human A beta by crossing the moAPP transgenic mice to a bigenic line expressing human APPswe with PS1dE9. The triple transgenic animals (moAPP x APPswe/PS1dE9) produced 20% more A beta but formed amyloid deposits no faster and to no greater extent than APPswe/PS1dE9 siblings. Instead, the additional mouse A beta increased the detergent solubility of accumulated amyloid and exacerbated amyloid deposition in the vasculature. These findings suggest that, although mouse A beta does not influence the rate of amyloid formation, the incorporation of A beta peptides with differing sequences alters the solubility and localization of the resulting aggregates.

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  • Multiple reports indicate that there are endogenous differences in rodent and human APP, which could significantly alter the production of Aβ after TBI.

    “For example, multiple reports indicate that there are endogenous differences in rodent and human APP (136), which could significantly alter the production on Aβ after TBI.”

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  1. Calhoun, M. E., Burgermeister, P., Phinney, A. L., Stalder, M., Tolnay, M., Wiederhold, K. H., Abramowski, D., Sturchler-Pierrat, C., Sommer, B., Staufenbiel, M., and Jucker, M. (1999) Proc. Natl. Acad. Sci. U. S. A. 96, 14088 -14093
  2. Borchelt, D. R., Lee, M. K., Slunt, H. S., Guarnieri, M., Xu, Z. S., Wong, P. C., Brown, R. H., Jr., Price, D. L., Sisodia, S. S., and Cleveland, D. W. (1994) Proc. Natl. Acad. Sci. U. S. A. 91, 8292-8296

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Authors
Jankowsky, J. L., Younkin, L. H., Gonzales, V., Fadale, D. J., Slunt, H. H., Lester, H. A., Younkin, S. G., & Borchelt, D. R.
Affiliations
  • California Institute of Technology (US)
  • Mayo Clinic (US)
  • Johns Hopkins University (US)
  • University of Florida (US)
Corresponding author
  • Jankowsky, Joanna L.
  • Borchelt, David R.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2007-08
Volume
282
Issue
31
Pages
22707-22720
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2156398762
Cited by
122
References
56
Citations by year
2026: 4 · 2025: 5 · 2024: 5 · 2023: 8 · 2022: 4 · 2021: 13 · 2020: 9 · 2019: 3 · 2018: 7 · 2017: 4 · 2016: 3 · 2015: 7 · 2014: 4 · 2013: 6 · 2012: 10
FWCI
3.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Funders
  • John Douglas French Alzheimer's Foundation
  • National Institutes of Health
  • National Institute on Aging (K01 AG26144-01, AG06656, 1 P01 AG-98-003, K01AG026144, 1 P50 AG-14-248)
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, APPswe, transgenic mice, Alzheimer's disease, amyloid deposition, detergent solubility, vascular amyloid, triple transgenic mice
MeSH terms
Amino Acid Sequence, Amyloid, Animals, Humans, Mice, Inbred C57BL, Mice, Transgenic, Molecular Sequence Data, Peptides, Solubility, Amyloid beta-Peptides, Sequence Homology, Amino Acid, Protein Structure, Tertiary, Transgenes, Mice, Presenilin-1

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