Evidence map›Paper›PMID 19272840›Full record

ArticleDNA repair2009

Novel DNA mismatch-repair activity involving YB-1 in human mitochondria.

Nadja C de Souza-Pinto, Penelope A Mason, Kazunari Hashiguchi, Lior Weissman, Jingyan Tian, David Guay, Michel Lebel, Tinna V Stevnsner, Lene Juel Rasmussen, Vilhelm A Bohr

Open access · greenAbstract read
In one paragraph

Article in DNA repair, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed, 1 pooled it
7.4field-weighted citation impact, top 2% 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

100 citing papers in PubMed, 1 synthesis or guideline pooled it, 212 citations in OpenAlex.

  1. Mitochondrial microsatellite instability in patients with metastatic colorectal cancer.Virchows Archiv : an international journal of pathology · 2015
    Pooled it
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  15. Decoding mitochondrial DNA damage and repair associated withFrontiers in cellular and infection microbiology · 2024
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Mitochondrial DNA Repair in Neurodegenerative Diseases and Ageing.International journal of molecular sciences · 2022
    Review

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

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 3 countries.

Nadja C de Souza-PintoLaboratory of Molecular Gerontology, National Institute on Aging/Intramural Research Program (NIA-IRP), National Institutes of Health, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA.
Penelope A Mason
Kazunari Hashiguchi
Lior Weissman
Jingyan Tian
David Guay
Michel Lebel
Tinna V Stevnsner
Lene Juel Rasmussen
Vilhelm A Bohr
National Institutes of Health · USHôtel-Dieu de Québec · CANational Institute on Aging · USAarhus University · DKRoskilde University · DK

Funding

Mitochondrial DNA Repair Processes In Oxidative Stress And AgingZIAAG000733 · NIA · NATIONAL INSTITUTE ON AGING · PI FERRUCCI, LUIGI · 2009 to 2022
$9.2M
Oxidative DNA Damage And Its ProcessingZIAAG000727 · NIA · NATIONAL INSTITUTE ON AGING · PI FERRUCCI, LUIGI · 2009 to 2022
$8.4M
OXIDATIVE STRESS MITOCHONDRIAZ01AG000733 · NIA · NATIONAL INSTITUTE ON AGING · PI BOHR, VILHELM A · 1996 to 2008
$1.6M
Intramural NIH HHS Z01 AG000733
6 · The paper itself

Abstract

Maintenance of the mitochondrial genome (mtDNA) is essential for proper cellular function. The accumulation of damage and mutations in the mtDNA leads to diseases, cancer, and aging. Mammalian mitochondria have proficient base excision repair, but the existence of other DNA repair pathways is still unclear. Deficiencies in DNA mismatch repair (MMR), which corrects base mismatches and small loops, are associated with DNA microsatellite instability, accumulation of mutations, and cancer. MMR proteins have been identified in yeast and coral mitochondria; however, MMR proteins and function have not yet been detected in human mitochondria. Here we show that human mitochondria have a robust mismatch-repair activity, which is distinct from nuclear MMR. Key nuclear MMR factors were not detected in mitochondria, and similar mismatch-binding activity was observed in mitochondrial extracts from cells lacking MSH2, suggesting distinctive pathways for nuclear and mitochondrial MMR. We identified the repair factor YB-1 as a key candidate for a mitochondrial mismatch-binding protein. This protein localizes to mitochondria in human cells, and contributes significantly to the mismatch-binding and mismatch-repair activity detected in HeLa mitochondrial extracts, which are significantly decreased when the intracellular levels of YB-1 are diminished. Moreover, YB-1 depletion in cells increases mitochondrial DNA mutagenesis. Our results show that human mitochondria contain a functional MMR repair pathway in which YB-1 participates, likely in the mismatch-binding and recognition steps.

Indexed as

DNA Mismatch RepairCell NucleusChloramphenicol ResistanceDNA-Binding ProteinsDNA, MitochondrialElectrophoretic Mobility Shift AssayHeLa CellsHumansMitochondriaNuclear ProteinsOxygen ConsumptionSubcellular FractionsY-Box-Binding Protein 1DNA-Binding ProteinsDNA, MitochondrialNuclear ProteinsY-Box-Binding Protein 1YBX1 protein, human

Identifiers

PMID19272840
PMCPMC2693314
OpenAlexW2109099295

What OpenQuestion holds

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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.