Evidence map›Paper›PMID 23530188›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

The human placenta methylome.

Diane I Schroeder, John D Blair, Paul Lott, Hung On Ken Yu, Danna Hong, Florence Crary, Paul Ashwood, Cheryl Walker, Ian Korf, Wendy P Robinson and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 197 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
197citing papers in PubMed, 6 pooled it
13.2field-weighted citation impact, top 1% 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

197 citing papers in PubMed, 6 syntheses or guidelines pooled it, 312 citations in OpenAlex.

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137 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

11 authors at 3 institutions in 2 countries.

Diane I SchroederDepartment of Medical Microbiology and Immunology, UC Davis School of Medicine, Davis, CA 95616, USA.
John D Blair
Paul Lott
Hung On Ken Yu
Danna Hong
Florence Crary
Paul Ashwood
Cheryl Walker
Ian Korf
Wendy P Robinson
Janine M LaSalle
University of California, Davis · USUniversity of British Columbia · CACenter for Environmental Health · US

Funding

The Role of MeCP2 in Rett SyndromeR01HD041462 · NICHD · UNIVERSITY OF CALIFORNIA DAVIS · PI LASALLE, JANINE M · 2002 to 2011
$2.8M
The Role of MeCP2 in Rett SyndromeR01NS081913 · NINDS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LASALLE, JANINE M · 2012 to 2016
$1.9M
Methylomic and genomic impacts of organic pollutants in Dup15q syndromeR01ES021707 · NIEHS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LASALLE, JANINE M · 2012 to 2016
$1.8M
CIHR FRN 119402NICHD NIH HHS R01 HD041462NICHD NIH HHS R01HD041462NIEHS NIH HHS R01 ES021707NIEHS NIH HHS R01ES021707NINDS NIH HHS R01 NS081913
6 · The paper itself

Abstract

Tissue-specific DNA methylation is found at promoters, enhancers, and CpG islands but also over larger genomic regions. In most human tissues, the vast majority of the genome is highly methylated (>70%). Recently, sequencing of bisulfite-treated DNA (MethylC-seq) has revealed large partially methylated domains (PMDs) in some human cell lines. PMDs cover up to 40% of the genome and are associated with gene repression and inactive chromatin marks. However, to date, only cultured cells and cancers have shown evidence for PMDs. Here, we performed MethylC-seq in full-term human placenta and demonstrate it is the first known normal tissue showing clear evidence of PMDs. We found that PMDs cover 37% of the placental genome, are stable throughout gestation and between individuals, and can be observed with lower sensitivity in Illumina 450K Infinium data. RNA-seq analysis confirmed that genes in PMDs are repressed in placenta. Using a hidden Markov model to map placental PMDs genome-wide and compare them to PMDs in other cell lines, we found that genes within placental PMDs have tissue-specific functions. For regulatory regions, methylation levels in promoter CpG islands are actually higher for genes within placental PMDs, despite the lower overall methylation of surrounding regions. Similar to PMDs, polycomb-regulated regions are hypomethylated but smaller and distinct from PMDs, with some being hypermethylated in placenta compared with other tissues. These results suggest that PMDs are a developmentally dynamic feature of the methylome that are relevant for understanding both normal development and cancer and may be of use as epigenetic biomarkers.

Indexed as

DNA MethylationBiomarkersChildChild, PreschoolChromatinCpG IslandsEpigenesis, GeneticFemaleGenome, HumanHumansMaleOligonucleotide Array Sequence AnalysisPlacentaPregnancySequence Analysis, RNASulfitesBiomarkersChromatinhydrogen sulfiteSulfites

Identifiers

PMID23530188
PMCPMC3625261
OpenAlexW2159308963

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.