Evidence map›Paper›PMID 22156296›Full record

ArticleGenome research2012

Global DNA hypomethylation coupled to repressive chromatin domain formation and gene silencing in breast cancer.

Gary C Hon, R David Hawkins, Otavia L Caballero, Christine Lo, Ryan Lister, Mattia Pelizzola, Armand Valsesia, Zhen Ye, Samantha Kuan, Lee E Edsall and 7 more

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 338 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
338citing papers in PubMed, 2 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

338 citing papers in PubMed, 2 syntheses or guidelines pooled it, 615 citations in OpenAlex.

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278 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

17 authors at 5 institutions in 2 countries.

Gary C HonLudwig Institute for Cancer Research, La Jolla, California 92093, USA.
R David Hawkins
Otavia L Caballero
Christine Lo
Ryan Lister
Mattia Pelizzola
Armand Valsesia
Zhen Ye
Samantha Kuan
Lee E Edsall
Anamaria Aranha Camargo
Brian J Stevenson
Joseph R Ecker
Vineet Bafna
Robert L Strausberg
Andrew J Simpson
Bing Ren
Ludwig Cancer Research · USJohns Hopkins University · USSalk Institute for Biological Studies · USUniversity of California San Diego · USSIB Swiss Institute of Bioinformatics · CH

Funding

Algorithmic strategies for detecting structural variation in genomesR01HG004962 · NHGRI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BAFNA, VINEET · 2009 to 2012
$1.3M
NHGRI NIH HHS 5R01-HG004962NHGRI NIH HHS R01 HG004962
6 · The paper itself

Abstract

While genetic mutation is a hallmark of cancer, many cancers also acquire epigenetic alterations during tumorigenesis including aberrant DNA hypermethylation of tumor suppressors, as well as changes in chromatin modifications as caused by genetic mutations of the chromatin-modifying machinery. However, the extent of epigenetic alterations in cancer cells has not been fully characterized. Here, we describe complete methylome maps at single nucleotide resolution of a low-passage breast cancer cell line and primary human mammary epithelial cells. We find widespread DNA hypomethylation in the cancer cell, primarily at partially methylated domains (PMDs) in normal breast cells. Unexpectedly, genes within these regions are largely silenced in cancer cells. The loss of DNA methylation in these regions is accompanied by formation of repressive chromatin, with a significant fraction displaying allelic DNA methylation where one allele is DNA methylated while the other allele is occupied by histone modifications H3K9me3 or H3K27me3. Our results show a mutually exclusive relationship between DNA methylation and H3K9me3 or H3K27me3. These results suggest that global DNA hypomethylation in breast cancer is tightly linked to the formation of repressive chromatin domains and gene silencing, thus identifying a potential epigenetic pathway for gene regulation in cancer cells.

Indexed as

Chromatin Assembly and DisassemblyDNA MethylationGene SilencingAllelesBreast NeoplasmsCell Line, TumorChromatinCluster AnalysisEpigenesis, GeneticFemaleGene Expression Regulation, NeoplasticHistonesHumansModels, GeneticRepetitive Sequences, Nucleic AcidTranscription, GeneticChromatinHistones

Identifiers

PMID22156296
PMCPMC3266032
OpenAlexW2114912562

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.