Evidence map›Paper›PMID 14762061›Full record

ArticleGenome research2004

A comprehensive analysis of allelic methylation status of CpG islands on human chromosome 21q.

Yoichi Yamada, Hidemi Watanabe, Fumihito Miura, Hidenobu Soejima, Michiko Uchiyama, Tsuyoshi Iwasaka, Tsunehiro Mukai, Yoshiyuki Sakaki, Takashi Ito

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Genome research, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing 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

62 citing papers in PubMed, 169 citations in OpenAlex.

  1. Review
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  5. Review
  6. DNA methylation studies in cattle.Journal of applied genetics · 2021
    Review
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  20. Clustered transcripts that escape X inactivation at mouse XqD.Mammalian genome : official journal of the International Mammalian Genome Society · 2011
    Article

2 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

9 authors at 4 institutions in 1 country.

Yoichi YamadaDivision of Genome Biology, Cancer Research Institute, Kanazawa University, Kanazawa 920-0934, Japan.
Hidemi Watanabe
Fumihito Miura
Hidenobu Soejima
Michiko Uchiyama
Tsuyoshi Iwasaka
Tsunehiro Mukai
Yoshiyuki Sakaki
Takashi Ito
Saga University · JPKanazawa University · JPRIKEN Center for Integrative Medical Sciences · JPTokyo University of Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Approximately half of all human genes have CpG islands (CGIs)around their promoter regions. Although CGIs usually escape methylation, those on Chromosome X in females and those in the vicinity of imprinted genes are exceptions: They have both methylated and unmethylated alleles to display a "composite" pattern in methylation analysis. In addition, aberrant methylation of CGIs is known to often occur in cancer cells. Here we developed a simple HpaII-McrBC PCR method for discrimination of full, null, incomplete, and composite methylation patterns, and applied it to all computationally identified CGIs on human Chromosome 21q. This comprehensive analysis revealed that, although most CGIs (103 out of 149)escape methylation, a sizable fraction (31 out of 149)are fully methylated even in normal peripheral blood cells. Furthermore, we identified seven CGIs showing the composite methylation, and demonstrated that three of them are indeed methylated monoallelically. Further analyses using informative pedigrees revealed that two of the three are subject to maternal allele-specific methylation. Intriguingly, the other CGI is methylated in an allele-specific but parental-origin-independent manner. Thus, the cell seems to have a broader repertoire of methylating CGIs than previously thought, and our approach may contribute to uncover novel modes of allelic methylation.

Indexed as

AllelesDNA MethylationChromosome MappingChromosomes, Human, Pair 21Computational BiologyCpG IslandsDNAFemaleHumansLeukocytesMaleMosaicismPlacentaPolymerase Chain ReactionPolymorphism, Single NucleotideResearch DesignDNA

Identifiers

PMID14762061
PMCPMC327100
OpenAlexW2027408624

What OpenQuestion holds

Textmetadata
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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.