Evidence map›Paper›PMID 21044947›Full record

ArticleHuman molecular genetics2011

Expanded CTG repeat demarcates a boundary for abnormal CpG methylation in myotonic dystrophy patient tissues.

Arturo López Castel, Masayuki Nakamori, Stephanie Tomé, David Chitayat, Geneviève Gourdon, Charles A Thornton, Christopher E Pearson

Open access · bronzeAbstract read
In one paragraph

Article in Human molecular genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
5.2field-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

83 citing papers in PubMed, 151 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Article
  5. Review
  6. Local Non-Coding Regulatory Elements in Muscular Dystrophies.International journal of molecular sciences · 2025
    Review
  7. Article
  8. Review
  9. Article
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  11. Article
  12. Article
  13. Article
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  19. Article
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23 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

7 authors at 4 institutions in 3 countries.

Arturo López CastelGenetics and Genome Biology, Department of Pediatrics, The Hospital for Sick Children, and Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.
Masayuki Nakamori
Stephanie Tomé
David Chitayat
Geneviève Gourdon
Charles A Thornton
Christopher E Pearson
Canada Research Chairs · CAInserm · FRUniversity of Rochester · USSickKids Foundation · CA

Funding

Training and Educational CoreU54NS048843 · NINDS · UNIVERSITY OF ROCHESTER · PI DIRKSEN, ROBERT T · 2003 to 2017
$21.9M
TISSUE DISTRIBUTION FOR RARE DISEASE RESEARCHU42RR006042 · NCRR · NATIONAL DISEASE RESEARCH INTERCHANGE · PI LONSDALE, JOHN T · 1991 to 2011
$16.5M
RNA-mediated Mechanisms in the Myotonic DystrophiesR01AR049077 · NIAMS · UNIVERSITY OF ROCHESTER · PI THORNTON, CHARLES A · 2002 to 2011
$3.0M
Integrative Pathophysiology of Myotonic DystrophyK24AR048143 · NIAMS · UNIVERSITY OF ROCHESTER · PI THORNTON, CHARLES A · 2002 to 2012
$1.1M
NCRR NIH HHS 5U42RR006042-19NCRR NIH HHS U42 RR006042NIAMS NIH HHS K24 AR048143NIAMS NIH HHS R01 AR049077NINDS NIH HHS U54NS48843
6 · The paper itself

Abstract

Myotonic dystrophy (DM1) affects multiple organs, shows age-dependent progression and is caused by CTG expansions at the DM1 locus. We determined the DM1 CpG methylation profile and CTG length in tissues from DM1 foetuses, DM1 adults, non-affected individuals and transgenic DM1 mice. Analysis included CTCF binding sites upstream and downstream of the CTG tract, as methylation-sensitive CTCF binding affects chromatinization and transcription of the DM1 locus. In humans, in a given foetus, expansions were largest in heart and smallest in liver, differing by 40-400 repeats; in adults, the largest expansions were in heart and cerebral cortex and smallest in cerebellum, differing by up to 5770 repeats in the same individual. Abnormal methylation was specific to the mutant allele. In DM1 adults, heart, liver and cortex showed high-to-moderate methylation levels, whereas cerebellum, kidney and skeletal muscle were devoid of methylation. Methylation decreased between foetuses and adults. Contrary to previous findings, methylation was not restricted to individuals with congenital DM1. The expanded repeat demarcates an abrupt boundary of methylation. Upstream sequences, including the CTCF site, were methylated, whereas the repeat itself and downstream sequences were not. In DM1 mice, expansion-, tissue- and age-specific methylation patterns were similar but not identical to those in DM1 individuals; notably in mice, methylation was present up- and downstream of the repeat, but greater upstream. Thus, in humans, the CpG-free expanded CTG repeat appears to maintain a highly polarized pattern of CpG methylation at the DM1 locus, which varies markedly with age and tissues.

Indexed as

AdolescentAdultAged, 80 and overAllelesAnimalsBase SequenceCCCTC-Binding FactorDNA MethylationFemaleHumansMaleMiceMice, TransgenicMicrosatellite InstabilityMiddle AgedMolecular Sequence DataCCCTC-Binding FactorCTCF protein, humanCtcf protein, mouseDMPK protein, humanDMPK protein, mouseMyotonin-Protein KinaseProtein Serine-Threonine KinasesRepressor Proteins

Identifiers

PMID21044947
PMCPMC3000673
OpenAlexW2106539538

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.