Cited by 85Drug-Induced Hepatotoxicity and ProtectionRedox biology and oxidative stressCell death mechanisms and regulation

Robust protein nitration contributes to acetaminophen-induced mitochondrial dysfunction and acute liver injury

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Abdelmegeed, Mohamed A., Jang, Sehwan, Banerjee, Atrayee, Hardwick, James P., Song, Byoung-Joon·2013·Free Radical Biology and Medicine

Abstract

Acetaminophen (APAP), a widely used analgesic/antipyretic agent, can cause liver injury through increased nitrative stress, leading to protein nitration. However, the identities of nitrated proteins and their roles in hepatotoxicity are poorly understood. Thus, we aimed at studying the mechanism of APAP-induced hepatotoxicity by systematic identification and characterization of nitrated proteins in the absence or presence of an antioxidant, N-acetylcysteine (NAC). The levels of nitrated proteins markedly increased at 2h in mice exposed to a single APAP dose (350mg/kg ip), which caused severe liver necrosis at 24h. Protein nitration and liver necrosis were minimal in mice exposed to nontoxic 3-hydroxyacetanilide or animals co-treated with APAP and NAC. Mass-spectral analysis of the affinity-purified nitrated proteins identified numerous mitochondrial and cytosolic proteins, including mitochondrial aldehyde dehydrogenase, Mn-superoxide dismutase, glutathione peroxidase, ATP synthase, and 3-ketoacyl-CoA thiolase, involved in antioxidant defense, energy supply, or fatty acid metabolism. Immunoprecipitation followed by immunoblot with anti-3-nitrotyrosine antibody confirmed that the aforementioned proteins were nitrated in APAP-exposed mice but not in NAC-cotreated mice. Consistently, NAC cotreatment significantly restored the suppressed activity of these enzymes. Thus, we demonstrate a new mechanism by which many nitrated proteins with concomitantly suppressed activity promotes APAP-induced mitochondrial dysfunction and hepatotoxicity.

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Crossref · 10.1016/j.freeradbiomed.2013.02.018

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Authors
Abdelmegeed, M. A., Jang, S., Banerjee, A., Hardwick, J. P., & Song, B.-J.
Affiliations
  • National Institutes of Health (US)
  • Northeast Ohio Medical University (US)
Corresponding author
Song, Byoung-Joon
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2013-07
Volume
60
Pages
211-222
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2009705589
Cited by
85
References
70
Citations by year
2026: 1 · 2025: 2 · 2024: 12 · 2023: 2 · 2022: 5 · 2021: 5 · 2020: 6 · 2019: 3 · 2018: 7 · 2017: 8 · 2016: 9 · 2015: 15 · 2014: 6 · 2013: 4
FWCI
12.37
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Alcohol Abuse and Alcoholism
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Drug-Induced Hepatotoxicity and Protection
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
paracetamol, hepatotoxicity, protein nitration, nitrated proteins, mitochondrial dysfunction, N-acetylcysteine, antioxidant defense, nitrotyrosine, mitochondrial aldehyde dehydrogenase, Mn superoxide dismutase, glutathione peroxidase, ATP synthase, 3-ketoacyl-CoA thiolase, liver necrosis, oxidative stress
MeSH terms
Acetaminophen, Acetanilides, Acetylcysteine, Animals, Antioxidants, Mitochondria, Liver, Nitrates, Proteins, Superoxide Dismutase, Oxidative Stress, Mice, Chemical and Drug Induced Liver Injury

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