Cited by 348Alzheimer's disease research and treatmentsMitochondrial Function and PathologyDementia and Cognitive Impairment Research

Abnormal interaction of VDAC1 with amyloid beta and phosphorylated tau causes mitochondrial dysfunction in Alzheimer’s disease

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Manczak, M., Reddy, P. H.·2012·Human Molecular Genetics

Abstract

The purpose of our study was to determine the relationship between voltage-dependent anion channel 1 protein (VDAC1) and amyloid beta (Aβ) and phosphorylated tau in Alzheimer's disease (AD). Using brain specimens from AD patients, control subjects and 6-, 12- and 24-month-old Aβ precursor protein (APP) transgenic mice, we studied VDAC1 protein levels. Further, we also studied the interaction between VDAC1 and Aβ (monomers and oligomers) and phosphorylated tau, using cortical issues from AD patients, control subjects, APP, APP/PS1 and 3XTg.AD mice. We also studied age- and VDAC1-linked, mutant APP/Aβ-induced mitochondrial dysfunction in APP and non-transgenic wild-type (WT) mice. We found progressively increased levels of VDAC1 in the cortical tissues from the brains of patients with AD, relative to control subjects, and significantly increased levels of VDAC1 in the cerebral cortices of 6-, 12- and 24-month-old APP transgenic mice, relative to the age-matched control WT mice. Interestingly, we found VDAC1 interacted with Aβ and phosphorylated tau in the brains from AD patients and from APP, APP/PS1 and 3XTg.AD mice. We found progressively increased mitochondrial dysfunction in APP mice relative to WT mice. These observations led us to conclude that VDAC1 interacts with Aβ, and phosphorylated tau may in turn block mitochondrial pores, leading to mitochondrial dysfunction in AD pathogenesis. Based on current study observations, we propose that reduced levels of VDAC1, Aβ and phosphorylated tau may reduce the abnormal interaction between VDAC1 and APP, VDAC1 and Aβ, and VDAC1 and phosphorylated tau; and that reduced levels of VDAC1, Aβ and phosphorylated tau may maintain normal mitochondrial pore opening and pore closure, ultimately leading to normal mitochondrial function, mitochondria supplying ATP to nerve terminals and boosting synaptic and cognitive function in AD.

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  • VDAC1 overexpression, which favors oligomerization and promotes apoptosis, is present in AD brain and increases as the disease progresses.

    “VDAC1 overexpression, which favors oligomerization and promotes apoptosis [103], is present in AD brain and increases as the disease progresses [104].”

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Authors
Manczak, M., & Reddy, P. H.
Affiliations
Oregon National Primate Research Center (US)
Corresponding author
Reddy, P. H.
Venue
Human Molecular Genetics
Published
2012-08-27
Volume
21
Issue
23
Pages
5131-5146
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2144956444
Cited by
348
References
78
Citations by year
2026: 22 · 2025: 35 · 2024: 33 · 2023: 37 · 2022: 33 · 2021: 38 · 2020: 36 · 2019: 15 · 2018: 17 · 2017: 18 · 2016: 15 · 2015: 18 · 2014: 14 · 2013: 15 · 2012: 1
FWCI
10.30
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Oregon Health and Science University
  • National Institutes of Health (RR000163)
  • Oregon National Primate Research Center (RR000163)
  • National Institute on Aging (R01AG042178, R01AG028072, AG028072, AG042178)
  • National Institute of Neurological Disorders and Stroke (P30NS061800)
  • National Center for Research Resources (RR000163)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
VDAC1, amyloid-beta, phosphorylated tau, Alzheimer's disease, mitochondrial dysfunction, APP transgenic mice, APP/PS1 mice, 3xTg-AD mice, protein-protein interaction, cortical tissue
MeSH terms
Age Factors, Alzheimer Disease, Animals, Brain, Disease Models, Animal, Humans, Mice, Transgenic, Mitochondria, Phosphorylation, Protein Binding, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, tau Proteins, Voltage-Dependent Anion Channel 1, Mice

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