Evidence map›Paper›PMID 21466975›Full record

ArticleDNA repair2011

Subtelomeric regions in mammalian cells are deficient in DNA double-strand break repair.

Douglas Miller, Gloria E Reynolds, Ricardo Mejia, Jeremy M Stark, John P Murnane

Abstract read
In one paragraph

Article in DNA repair, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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

25 citing papers in PubMed.

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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

5 authors.

Douglas MillerDepartment of Radiation Oncology, University of California San Francisco, 94143-1331, United States.
Gloria E Reynolds
Ricardo Mejia
Jeremy M Stark
John P Murnane

Funding

Chromosome instability resulting from double-strand breaks near telomeresR01CA120205 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MURNANE, JOHN P. · 2006 to 2015
$2.6M
Mechanistic steps of homologous repair in mammalian cellsR01CA120954 · NCI · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI STARK, JEREMY MICHAEL · 2006 to 2016
$2.2M
NCI NIH HHS CA120205NCI NIH HHS CA120954NCI NIH HHS R01 CA120205NCI NIH HHS R01 CA120954
6 · The paper itself

Abstract

We have previously demonstrated that double-strand breaks (DSBs) in regions near telomeres are much more likely to result in large deletions, gross chromosome rearrangements, and chromosome instability than DSBs at interstitial sites within chromosomes. In the present study, we investigated whether this response of subtelomeric regions to DSBs is a result of a deficiency in DSB repair by comparing the frequency of homologous recombination repair (HRR) and nonhomologous end joining (NHEJ) at interstitial and telomeric sites following the introduction of DSBs by I-SceI endonuclease. We also monitored the frequency of small deletions, which have been shown to be the most common mutation at I-SceI-induced DSBs at interstitial sites. We observed no difference in the frequency of small deletions or HRR at interstitial and subtelomeric DSBs. However, the frequency of NHEJ was significantly lower at DSBs near telomeres compared to interstitial sites. The frequency of NHEJ was also lower at DSBs occurring at interstitial sites containing telomeric repeat sequences. We propose that regions near telomeres are deficient in classical NHEJ as a result of the presence of cis-acting telomere-binding proteins that cause DSBs to be processed as though they were telomeres, resulting in excessive resection, telomere loss, and eventual chromosome rearrangements by alternative NHEJ.

Indexed as

DNA Breaks, Double-StrandedCell Line, TumorDeoxyribonucleases, Type II Site-SpecificDNA RepairGene DeletionGene OrderHumansTelomereDeoxyribonucleases, Type II Site-Specific

Identifiers

PMID21466975
PMCPMC3084351

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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.