Cited by 71Alzheimer's disease research and treatmentsHeme Oxygenase-1 and Carbon MonoxideDementia and Cognitive Impairment Research

Long-term overexpression of heme oxygenase 1 promotes tau aggregation in mouse brain by inducing tau phosphorylation

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Hui, Yang, Wang, Dayong, Li, Wenjing, Zhang, Lina, Jin, Jianfeng, Ma, Ning, Zhou, Lingyun, Nakajima, Osamu +2 more·2011·Journal of Alzheimer s Disease

Abstract

Intracellular tau aggregates composed of neurofibrillary tangles (NFTs) are a defining feature of Alzheimer's disease (AD). Increased expression of heme oxygenase-1 (HO-1) is a common phenomenon in AD. Interestingly, the spatial distribution of HO-1 expression is essentially identical to that of pathological accumulation of tau in AD. In this study, we developed a new transgenic mouse overexpressing HO-1, called CAG-HO-1 Tg mice, to explore the relationship between HO-1 and tau aggregation. In this model, we found that long-term overexpression of HO-1 significantly promoted tau aggregation in brain, by analyzing changes in morphology and insoluble tau expression levels. Moreover, our research provides the first in vivo evidence that HO-1 can enhance iron loading and tau (Ser199/202/396) phosphorylation in brains of transgenic mice. Cellular evidence indicates that HO-1 can induce the phosphorylation of tau through iron accumulation in Neuro2a cells stably transfected with HO-1. Our data suggest that long-term overexpression of HO-1 can promote tau aggregation. This mechanism involves excessive iron production mediated by HO-1 overexpression, which induces tau phosphorylation. Our results provide a potential pathway for the pathogenesis of tauopathies, which remains largely unknown.

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Crossref · 10.3233/jad-2011-102061

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  • Overexpression of HO-1 in mice leads to iron loading and tau aggregation in the brain, which are characteristic of Alzheimer's disease.

    “Overexpression of HO-1 in mice leads to iron loading and tau aggregation in the brain, which are characteristic of Alzheimer’s disease.97”

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Authors
Hui, Y., Wang, D., Li, W., Zhang, L., Jin, J., Ma, N., Zhou, L., Nakajima, O., Zhao, W., & Gao, X.
Affiliations
  • Harbin Medical University (CN)
  • Yamagata University (JP)
Venue
Journal of Alzheimer s Disease
Published
2011-09-09
Volume
26
Issue
2
Pages
299-313
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1825967587
Cited by
71
References
54
Citations by year
2026: 4 · 2025: 6 · 2024: 8 · 2023: 4 · 2022: 4 · 2021: 1 · 2020: 5 · 2019: 3 · 2018: 5 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 7 · 2013: 6 · 2012: 4
FWCI
3.93
Type
journal article
Language
en
Open access
Locations
  • Journal of Alzheimer s Disease (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (30971059)
  • Natural Science Foundation of Heilongjiang Province
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
heme oxygenase-1, tau aggregation
MeSH terms
Alzheimer Disease, Animals, Brain, Disease Models, Animal, Mice, Transgenic, Neurons, Phosphorylation, Neurofibrillary Tangles, tau Proteins, Mice, Heme Oxygenase-1

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