Cited by 304Alzheimer's disease research and treatmentsRedox biology and oxidative stressDementia and Cognitive Impairment Research

Oxidative Stress Induces Intracellular Accumulation of Amyloid β-Protein (Aβ) in Human Neuroblastoma Cells

Misonou, Hiroaki, Morishima-Kawashima, Maho, Ihara, Yasuo·2000·Biochemistry

Abstract

Several lines of evidence suggest that enhanced oxidative stress is involved in the pathogenesis and/or progression of Alzheimer's disease (AD). Amyloid beta-protein (Abeta) that composes senile plaques, a major neuropathological hallmark of AD, is considered to have a causal role in AD. Thus, we have studied the effect of oxidative stress on Abeta metabolism within the cell. Here, we report that oxidative stress induced by H(2)O(2) (100-250 microM) caused an increase in the levels of intracellular Abeta in human neuroblastoma SH-SY5Y cells. Treatment with 200 microM H(2)O(2) caused significant decreases in the protein levels of full-length beta-amyloid precursor protein (APP) and its COOH-terminal fragment that is generated by beta-cleavage, while the gene expression of APP was not altered under these conditions. A pulse-chase experiment further showed a decrease in the half-life of this amyloidogenic COOH-terminal fragment but not in that of nonamyloidogenic counterpart in the H(2)O(2)-treated cells. These results suggest that oxidative stress promotes intracellular accumulation of Abeta through enhancing the amyloidogenic pathway.

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Crossref · 10.1021/bi000169p

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Authors
Misonou, H., Morishima-Kawashima, M., & Ihara, Y.
Affiliations
  • Japan Science and Technology Agency (JP)
  • Department of Neuropathology, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation (JST), Kawaguchi, Saitama 332-0012, Japan
Corresponding author
Ihara, Yasuo
Venue
Biochemistry
Published
2000-05-19
Volume
39
Issue
23
Pages
6951-6959
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2048360633
Cited by
304
References
19
Citations by year
2026: 4 · 2025: 3 · 2024: 11 · 2023: 12 · 2022: 6 · 2021: 9 · 2020: 9 · 2019: 8 · 2018: 19 · 2017: 14 · 2016: 12 · 2015: 10 · 2014: 13 · 2013: 8 · 2012: 15
FWCI
6.80
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
oxidative stress, amyloid-beta, Alzheimer's disease, hydrogen peroxide, amyloid precursor protein, APP cleavage, amyloidogenic pathway, intracellular accumulation, SH-SY5Y cells, protein half-life, amyloid plaques
MeSH terms
Alzheimer Disease, Animals, Antioxidants, Cell Survival, Chromans, Dimethyl Sulfoxide, Cricetinae, Humans, Hydrogen Peroxide, Neuroblastoma, Peptide Fragments, Phosphatidylserines, RNA, Messenger, Tetrazolium Salts, Thiazoles, Transfection, Tumor Cells, Cultured, Amyloid beta-Peptides, CHO Cells, Amyloid beta-Protein Precursor, Apoptosis, Oxidative Stress

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