Evidence map›Paper›PMID 23690562›Full record

ArticleThe Journal of physiology2013

Acute exercise induces tumour suppressor protein p53 translocation to the mitochondria and promotes a p53-Tfam-mitochondrial DNA complex in skeletal muscle.

Ayesha Saleem, David A Hood

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

79 citing papers in PubMed, 1 synthesis or guideline pooled it, 137 citations in OpenAlex.

  1. A systematic review of p53 regulation of oxidative stress in skeletal muscle.Redox report : communications in free radical research · 2018
    Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Review
  8. Review
  9. Article
  10. Mitochondrial Biogenesis in Skeletal Muscle.Advances in experimental medicine and biology · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Exercise metabolism and adaptation in skeletal muscle.Nature reviews. Molecular cell biology · 2023
    Review
  16. Article
  17. Article
  18. Review
  19. Mitochondrial epigenetics in aging and cardiovascular diseases.Frontiers in cardiovascular medicine · 2023
    Review
  20. Article

19 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Ayesha SaleemSchool of Kinesiology and Health Science, Muscle Health Research Centre, York University, Toronto, Ontario, Canada.
David A Hood
York University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The major tumour suppressor protein p53 plays an important role in maintaining mitochondrial content and function in skeletal muscle. p53 has been shown to reside in the mitochondria complexed with mitochondrial DNA (mtDNA); however, the physiological repercussions of mitochondrial p53 remain unknown. We endeavoured to elucidate whether an acute bout of endurance exercise could mediate an increase in mitochondrial p53 levels. C57Bl6 mice (n = 6 per group) were randomly assigned to sedentary, acute exercise (AE, 15 m min(-1) for 90 min) or acute exercise + 3 h recovery (AER) groups. Exercise concomitantly increased the mRNA content of nuclear-encoded (PGC-1α, Tfam, NRF-1, COX-IV, citrate synthase) and mtDNA-encoded (COX-I) genes in the AE group, and further by ∼5-fold in the AER group. Nuclear p53 protein levels were reduced in the AE and AER groups, while in contrast, the abundance of p53 was drastically enhanced by ∼2.4-fold and ∼3.9-fold in subsarcolemmal and intermyofibrillar mitochondria, respectively, in the AER conditions. Within the mitochondria, the interaction of p53 with mtDNA at the D-loop and with Tfam was elevated by ∼4.6-fold and ∼3.6-fold, respectively, in the AER group. In the absence of p53, the enhanced COX-I mRNA content observed with AE and AER was abrogated. This study is the first to indicate that endurance exercise can signal to localize p53 to the mitochondria where it may serve to positively modulate the activity of the mitochondrial transcription factor Tfam. Our findings help us understand the mechanisms underlying the effects of exercise as a therapeutic intervention designed to trigger the pro-metabolic functions of p53.

Indexed as

AnimalsCitrate (si)-SynthaseDNA-Binding ProteinsDNA, MitochondrialElectron Transport Complex IVFemaleHigh Mobility Group ProteinsHumansMaleMice, Inbred C57BLMice, KnockoutMitochondria, MuscleMuscle, SkeletalNuclear Respiratory Factor 1Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPhysical Conditioning, AnimalCitrate (si)-SynthaseDNA-Binding ProteinsDNA, MitochondrialElectron Transport Complex IVHigh Mobility Group ProteinsNrf1 protein, mouseNuclear Respiratory Factor 1Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPpargc1a protein, mouseRNA, MessengerTfam protein, mouseTranscription FactorsTumor Suppressor Protein p53

Identifiers

PMID23690562
PMCPMC3731618
OpenAlexW2105618103

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.