Cited by 16Antioxidant Activity and Oxidative StressRedox biology and oxidative stressAlzheimer's disease research and treatments

Neurofilaments are the major neuronal target of hydroxynonenal-mediated protein cross-links

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Perry, E. A., Castellani, R. J., Moreira, P. I., Nunomura, A., Lui, Q., Harris, P. L. R., Sayre, L. M., Szweda, P. A. +4 more·2013·Free Radical Research

Abstract

Lipid peroxidation generates reactive aldehydes, most notably hydroxynonenal (HNE), which covalently binds amino acid residue side chains leading to protein inactivation and insolubility. Specific adducts of lipid peroxidation have been demonstrated to be intimately associated with pathological lesions of Alzheimer's disease (AD), suggesting that oxidative stress is a major component in the disease. Here, we examined the HNE-cross-linking modifications by using an antibody specific for a lysine-lysine cross-link. Since in a prior study we noted no immunolabeling of neuritic plaques or neurofibrillary tangles but instead found strong labeling of axons, we focused this study on axons. Axonal labeling was examined in mouse sciatic nerve, and immunoblotting showed the cross-link was restricted to neurofilament heavy and medium subunits, which while altering migration, did not indicate larger NF aggregates, indicative of intermolecular cross-links. Examination of mice at various ages showed the extent of modification remaining relatively constant through the life span. These findings demonstrate lipid-cross-linking peroxidation primarily involves lysine-rich neurofilaments and is restricted to intramolecular cross-links.

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Authors
Perry, E. A., Castellani, R. J., Moreira, P. I., Nunomura, A., Lui, Q., Harris, P. L. R., Sayre, L. M., Szweda, P. A., Szweda, L. I., Zhu, X., Smith, M. A., & Perry, G.
Affiliations
  • The University of Texas at San Antonio (US)
  • University of Maryland, Baltimore (US)
  • Centro de Neurociências e Biologia Celular (PT)
  • University of Yamanashi (JP)
  • Case Western Reserve University (US)
  • Oklahoma Medical Research Foundation (US)
Corresponding author
Perry, G.
Venue
Free Radical Research
Published
2013-05-10
Volume
47
Issue
6-7
Pages
507-510
ISSN
  • 1029-2470 (ISSN-L)
  • 1071-5762
OpenAlex
W2023611061
Cited by
16
References
15
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2022: 1 · 2021: 2 · 2019: 2 · 2018: 2 · 2016: 2 · 2015: 3 · 2013: 1
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Free Radical Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Minority Health and Health Disparities (G12MD007591)
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
4-hydroxynonenal, neurofilaments, lipid peroxidation, protein cross-linking, oxidative stress, Alzheimer's disease, axons, intramolecular cross-links, lysine-rich proteins, aging
MeSH terms
Aldehydes, Animals, Antibodies, Fluorescence, Lysine, Mice, Inbred Strains, Sciatic Nerve, Neurofilament Proteins, Mice

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