Cited by 145Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Astroglial Expression of Human α1-Antichymotrypsin Enhances Alzheimer-like Pathology in Amyloid Protein Precursor Transgenic Mice

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Mucke, Lennart, Yu, Gui-Qiu, McConlogue, Lisa, Rockenstein, Edward M., Abraham, Carmela R., Masliah, Eliezer·2000·The American Journal of Pathology

Abstract

Proteases and their inhibitors play key roles in physiological and pathological processes. Cerebral amyloid plaques are a pathological hallmark of Alzheimer's disease (AD). They contain amyloid-ss (Ass) peptides in tight association with the serine protease inhibitor alpha(1)-antichymotrypsin.(1,2) However, it is unknown whether the increased expression of alpha(1)-antichymotrypsin found in AD brains counteracts or contributes to the disease. We used regulatory sequences of the glial fibrillary acidic protein gene(3) to express human alpha(1)-antichymotrypsin (hACT) in astrocytes of transgenic mice. These mice were crossed with transgenic mice that produce human amyloid protein precursors (hAPP) and Ass in neurons.(4,5) No amyloid plaques were found in transgenic mice expressing hACT alone, whereas hAPP transgenic mice and hAPP/hACT doubly transgenic mice developed typical AD-like amyloid plaques in the hippocampus and neocortex around 6 to 8 months of age. Co-expression of hAPP and hACT significantly increased the plaque burden at 7 to 8, 14, and 20 months. Both hAPP and hAPP/hACT mice showed significant decreases in synaptophysin-immunoreactive presynaptic terminals in the dentate gyrus, compared with nontransgenic littermates. Our results demonstrate that hACT acts as an amyloidogenic co-factor in vivo and suggest that the role of hACT in AD is pathogenic.

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  1. [50]Wyss-Coray T, Lacombe P, Von Euw D, Lin C, McConlogue L, Masliah E, Mucke L: TGF-β1 modulates brain amyloid deposition and induces Alzheimer’s disease like microvascular abnormalities in transgenic mice. Soc Neurosci Abstr 1999, 25:22 [Google Scholar]
  2. [54]Davis JN, Chisholm JC: The ‘amyloid cascade hypothesis’ of AD: decoy or real McCoy? Trends Neurosci 1997, 20:558-559 [DOI] [PubMed] [Google Scholar]
  3. [57]McLean CA, Cherny RA, Fraser FW, Fuller SJ, Smith MJ, Beyreuther K, Bush AI, Masters CL: Soluble pool of Aβ amyloid as a determinant of severity of neurodegeneration in Alzheimer’s disease. Ann Neurol 1999, 46:860-866 [DOI] [PubMed] [Google Scholar]

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Authors
Mucke, L., Yu, G.-Q., McConlogue, L., Rockenstein, E. M., Abraham, C. R., & Masliah, E.
Affiliations
  • University of California, San Francisco (US)
  • Elan Pharmaceuticals, Inc. (Ireland) (IE)
  • University of California San Diego (US)
  • Boston University (US)
Corresponding author
Mucke, Lennart
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2000-12
Volume
157
Issue
6
Pages
2003-2010
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2104932745
Cited by
145
References
60
Citations by year
2026: 3 · 2025: 3 · 2024: 9 · 2023: 10 · 2022: 5 · 2021: 6 · 2020: 3 · 2019: 1 · 2017: 2 · 2015: 3 · 2014: 6 · 2013: 1 · 2012: 10
FWCI
6.32
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (AG11385, AG5131, AG10869, AG09905)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
alpha-1-antichymotrypsin, Alzheimer's disease, amyloid plaques, amyloid-beta, amyloid precursor protein, astrocytes, transgenic mice, synaptophysin, presynaptic terminals, glial fibrillary acidic protein promoter
MeSH terms
alpha 1-Antichymotrypsin, Alzheimer Disease, Animals, Astrocytes, Brain, Humans, Mice, Inbred C57BL, Mice, Inbred Strains, Mice, Transgenic, Synapses, Serine Proteinase Inhibitors, Gene Expression, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Transgenes, Mice, Plaque, Amyloid

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