Cited by 1,854Mitochondrial Function and PathologyDNA Repair MechanismsRedox biology and oxidative stress

Mitochondrial DNA damage is more extensive and persists longer than nuclear DNA damage in human cells following oxidative stress

Open access
Yakes, F. Michael, Van Houten, Bennett·1997·Proceedings of the National Academy of Sciences

Abstract

A significant amount of reactive oxygen species (ROS) is generated during mitochondrial oxidative phosphorylation. Several studies have suggested that mtDNA may accumulate more oxidative DNA damage relative to nuclear DNA. This study used quantitative PCR to examine the formation and repair of hydrogen peroxide-induced DNA damage in a 16.2-kb mitochondrial fragment and a 17.7-kb fragment flanking the β-globin gene. Simian virus 40-transformed fibroblasts treated with 200 μM hydrogen peroxide for 15 or 60 min exhibited 3-fold more damage to the mitochondrial genome compared with the nuclear fragment. Following a 60-min treatment, damage to the nuclear fragment was completely repaired within 1.5 hr, whereas no DNA repair in the mitochondrion was observed. Mitochondrial function, as assayed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide reduction, also showed a sharp decline. These cells displayed arrested-cell growth, large increases in p21 protein levels, and morphological changes consistent with apoptosis. In contrast, when hydrogen peroxide treatments were limited to 15 min, mtDNA damage was repaired with similar kinetics as the nuclear fragment, mitochondrial function was restored, and cells resumed division within 12 hr. These results indicate that mtDNA is a critical cellular target for ROS. A model is presented in which chronic ROS exposure, found in several degenerative diseases associated with aging, leads to decreased mitochondrial function, increased mitochondrial-generated ROS, and persistent mitochondrial DNA damage. Thus persistent mitochondrial DNA damage may serve as a useful biomarker for ROS-associated diseases.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.94.2.514

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Unhealthy mitochondria emit higher levels of ROS, increasing oxidative stress and lipid peroxidation, and causing damage to mitochondrial and nuclear DNA.

    “Beyond the oxidative stress generated as a byproduct of neuronal metabolism and the aberrant ROS production catalyzed by amyloid β peptide, there is also evidence that unhealthy mitochondria emit higher levels of ROS, increasing oxidative stress and lipid peroxidation, and causing damage to mitochondrial and nuclear DNA [60,61,62].”

    From Rlip76: An Unexplored Player in Neurodegeneration and Alzheimer’s Disease? (2022) · cites this paper as [62]

    The Discussion (page not provided) proposes that disruption of mitochondrial function could increase mitochondrial ROS and that lipid peroxidation could sustain DNA damage. The Results show damage to both mitochondrial and nuclear DNA after hydrogen peroxide exposure, but do not establish that ROS emitted by unhealthy mitochondria caused lipid peroxidation or the nuclear DNA damage. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 5

  1. [7]Richter, C., Park, J.-W. & Ames, B. (1988) Proc. Natl. Acad. Sci. USA 85, 6465-6467.
  2. [10]Ames, B. N., Shigenaga, M. K. & Hagen, T. M. (1993) Proc. Natl. Acad. Sci. USA 90, 7915-7922.
  3. [11]Shigenaga, M., Hagen, T. M. & Ames, B. N. (1994) Proc. Natl. Acad. Sci. USA 91, 10771-10778.
  4. [13]Chen, Q. & Ames, B. (1994) Proc. Natl. Acad. Sci. USA 91, 4130-4134.
  5. [24]Yakes, F. M., Chen, Y. & Van Houten, B. (1996) in Technologies for Detection of DNA Damage and Mutations , ed. Pfeifer, G. P. (Plenum, New York), pp. 169-182.

Cited by

Sorted by citations

Authors
Yakes, F. M., & Van Houten, B.
Affiliations
  • The University of Texas Medical Branch at Galveston (US)
  • Sealy Center for Molecular Science and Department of Human Biological Chemistry and Genetics, University of Texas Medical Branch, Galveston, TX 77555-1068
Venue
Proceedings of the National Academy of Sciences
Published
1997-01-21
Volume
94
Issue
2
Pages
514-519
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1650754258
Cited by
1,854
References
1
Citations by year
2026: 57 · 2025: 68 · 2024: 78 · 2023: 64 · 2022: 61 · 2021: 89 · 2020: 93 · 2019: 74 · 2018: 87 · 2017: 78 · 2016: 79 · 2015: 67 · 2014: 92 · 2013: 68 · 2012: 88
FWCI
16.87
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Environmental Health Sciences (R01ES007038, ES07281, ES-07038)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
mitochondrial DNA damage, oxidative DNA damage, reactive oxygen species, hydrogen peroxide, oxidative stress, DNA repair, mitochondrial function, apoptosis, p21, aging, biomarkers, mitochondrial oxidative phosphorylation, SV40-transformed fibroblasts
MeSH terms
Cell Line, Cell Nucleus, DNA, DNA Damage, DNA Repair, DNA, Mitochondrial, Humans, Hydrogen Peroxide, Oxidation-Reduction, Apoptosis, Oxidative Stress

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review