Evidence map›Paper›PMID 24402520›Full record

ArticleGenome research2014

Genome-wide parent-of-origin DNA methylation analysis reveals the intricacies of human imprinting and suggests a germline methylation-independent mechanism of establishment.

Franck Court, Chiharu Tayama, Valeria Romanelli, Alex Martin-Trujillo, Isabel Iglesias-Platas, Kohji Okamura, Naoko Sugahara, Carlos Simón, Harry Moore, Julie V Harness and 11 more

Abstract read
In one paragraph

Article in Genome research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 222 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
222citing papers in PubMed, 3 pooled it
–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

222 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Article
  9. The complete genome of the KOLF2.1J reference iPSC line.bioRxiv : the preprint server for biology · 2026
    Article
  10. Article
  11. Review
  12. Species-Specific Parent-Of-Origin Expression of Adam23 in the Mammalian Brain.Genes to cells : devoted to molecular & cellular mechanisms · 2026
    Article
  13. Article
  14. Article
  15. Epigenetics · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

162 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

21 authors.

Franck CourtImprinting and Cancer Group, Cancer Epigenetic and Biology Program, Institut d'Investigació Biomedica de Bellvitge, Hospital Duran i Reynals, 08908 Barcelona, Spain;
Chiharu Tayama
Valeria Romanelli
Alex Martin-Trujillo
Isabel Iglesias-Platas
Kohji Okamura
Naoko Sugahara
Carlos Simón
Harry Moore
Julie V Harness
Hans Keirstead
Jose Vicente Sanchez-Mut
Eisuke Kaneki
Pablo Lapunzina
Hidenobu Soejima
Norio Wake
Manel Esteller
Tsutomu Ogata
Kenichiro Hata
Kazuhiko Nakabayashi
David Monk

Funding

Medical Research Council G0300496
6 · The paper itself

Abstract

Differential methylation between the two alleles of a gene has been observed in imprinted regions, where the methylation of one allele occurs on a parent-of-origin basis, the inactive X-chromosome in females, and at those loci whose methylation is driven by genetic variants. We have extensively characterized imprinted methylation in a substantial range of normal human tissues, reciprocal genome-wide uniparental disomies, and hydatidiform moles, using a combination of whole-genome bisulfite sequencing and high-density methylation microarrays. This approach allowed us to define methylation profiles at known imprinted domains at base-pair resolution, as well as to identify 21 novel loci harboring parent-of-origin methylation, 15 of which are restricted to the placenta. We observe that the extent of imprinted differentially methylated regions (DMRs) is extremely similar between tissues, with the exception of the placenta. This extra-embryonic tissue often adopts a different methylation profile compared to somatic tissues. Further, we profiled all imprinted DMRs in sperm and embryonic stem cells derived from parthenogenetically activated oocytes, individual blastomeres, and blastocysts, in order to identify primary DMRs and reveal the extent of reprogramming during preimplantation development. Intriguingly, we find that in contrast to ubiquitous imprints, the majority of placenta-specific imprinted DMRs are unmethylated in sperm and all human embryonic stem cells. Therefore, placental-specific imprinting provides evidence for an inheritable epigenetic state that is independent of DNA methylation and the existence of a novel imprinting mechanism at these loci.

Indexed as

Germ CellsAllelesCpG IslandsDNA MethylationEmbryonic Stem CellsFemaleGene ExpressionGenome, HumanGenomic ImprintingHumansPlacentaPregnancy

Identifiers

PMID24402520
PMCPMC3975056

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.