Cited by 53Antioxidant Activity and Oxidative StressFatty Acid Research and HealthRedox biology and oxidative stress

Formation of Nɛ-(succinyl)lysine in vivo: a novel marker for docosahexaenoic acid-derived protein modification

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Kawai, Yoshichika, Fujii, Hiroyuki, Okada, Miki, Tsuchie, Yoshikazu, Uchida, Koji, Osawa, Toshihiko·2006·Journal of Lipid Research

Abstract

Free radical-catalyzed peroxidation of docosahexaenoic acid (DHA, C22:6/omega-3) generates various lipid peroxidation products that covalently modify biomolecules such as proteins. Under a free radical-generating system, DHA significantly modified lysine residues in bovine serum albumin. Upon incubation of oxidized DHA with an amino-compound pyridoxamine or a lysine-containing peptide, N-propanoyl and N-succinyl adducts were determined to be the major modification products. The hydroperoxide levels in the oxidized DHA closely reflected the formation of the N(epsilon)-(succinyl)lysine (SUL) upon reaction with the peptide, indicating that the hydroperoxides of DHA represent a potential pathway for the formation of SUL. To detect the DHA-derived protein modification in vivo, we developed a monoclonal antibody (mAb2B12) specific to SUL and found that the antibody specifically reacts with the SUL moiety. The formation of SUL was then immunochemically demonstrated in the liver of mice fed with DHA followed by intraperitoneal injection of carbon tetrachloride (CCl(4)), a hepatic lipid peroxidation model. Immunoreactive materials with mAb2B12 were observed in the DHA + CCl(4) group, but were not significant in the control, DHA-alone, and CCl(4)-alone groups. These data suggest that the formation of DHA-derived adducts such as SUL may be implicated in the oxidative damage observed in DHA-enriched tissues.

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Authors
Kawai, Y., Fujii, H., Okada, M., Tsuchie, Y., Uchida, K., & Osawa, T.
Affiliations
Nagoya University (JP)
Corresponding author
Kawai, Yoshichika
Venue
Journal of Lipid Research
Publisher
Elsevier BV
Published
2006-07
Volume
47
Issue
7
Pages
1386-1398
ISSN
0022-2275 (ISSN-L)
OpenAlex
W2156086508
Cited by
53
References
50
Citations by year
2025: 3 · 2024: 1 · 2022: 2 · 2021: 5 · 2020: 3 · 2018: 3 · 2017: 2 · 2016: 1 · 2014: 1 · 2013: 10 · 2012: 3
FWCI
2.47
Type
journal article
Language
en
Open access
Locations
  • Journal of Lipid Research (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
docosahexaenoic acid, lipid peroxidation, protein modification, lysine adducts, hydroperoxides, monoclonal antibodies, carbon tetrachloride, hepatic lipid peroxidation, oxidative damage, omega-3 fatty acids, bovine serum albumin
MeSH terms
Animals, Antibodies, Monoclonal, Docosahexaenoic Acids, Immunohistochemistry, Liver, Lysine, Male, Mice, Inbred ICR, Protein Processing, Post-Translational, Proteins, Succinates, Lipid Peroxidation, Biomarkers, Mice, In Vitro Techniques

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