Evidence map›Paper›PMID 15625623›Full record

ArticleAmerican journal of human genetics2005

Role of replication and CpG methylation in fragile X syndrome CGG deletions in primate cells.

Kerrie Nichol Edamura, Michelle R Leonard, Christopher E Pearson

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

26 citing papers in PubMed, 51 citations in OpenAlex.

  1. Creation and resolution of non-B-DNA structural impediments during replication.Critical reviews in biochemistry and molecular biology · 2022
    Article
  2. Mechanisms of theInternational journal of molecular sciences · 2022
    Review
  3. Review
  4. The G-rich Repeats inGenetics · 2018
    Article
  5. Review
  6. Of Men and Mice: Modeling the Fragile X Syndrome.Frontiers in molecular neuroscience · 2018
    Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
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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

3 authors at 2 institutions in 1 country.

Kerrie Nichol EdamuraProgram of Genetics and Genomic Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.
Michelle R Leonard
Christopher E Pearson
University of Toronto · CAHospital for Sick Children · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Instability of the fragile X CGG repeat involves both maternally derived expansions and deletions in the gametes of full-mutation males. It has also been suggested that the absence of aberrant CpG methylation may enhance repeat deletions through an unknown process. The effect of CGG tract length, DNA replication direction, location of replication initiation, and CpG methylation upon CGG stability were investigated using an SV40 primate replication system. Replication-dependant deletions with 53 CGG repeats were observed when replication was initiated proximal to the repeat, with CGG as the lagging-strand template. When we initiated replication further from the repeat, while maintaining CGG as the lagging-strand template or using CCG as the lagging-strand template, significant instability was not observed. CpG methylation of the unstable template stabilized the repeat, decreasing both the frequency and the magnitude of deletion events. Furthermore, CpG methylation slowed the efficiency of replication for all templates. Interestingly, replication forks displayed no evidence of a block at the CGG repeat tract, regardless of replication direction or CpG methylation status. Templates with 20 CGG repeats were stable under all circumstances. These results reveal that CGG deletions occur during replication and are sensitive to replication-fork dynamics, tract length, and CpG methylation.

Indexed as

DNA MethylationGene DeletionCell Culture TechniquesChromosomal InstabilityCpG IslandsDNA ReplicationFragile X SyndromeHumansTrinucleotide Repeats

Identifiers

PMID15625623
PMCPMC1196375
OpenAlexW2142440824

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.