Evidence map›Paper›PMID 21865393›Full record

ArticleJournal of virology2011

Evidence for alteration of EZH2, BMI1, and KDM6A and epigenetic reprogramming in human papillomavirus type 16 E6/E7-expressing keratinocytes.

Paula L Hyland, Simon S McDade, Rachel McCloskey, Glenda J Dickson, Ken Arthur, Dennis J McCance, Daksha Patel

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
5.6field-weighted citation impact, top 4% 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

67 citing papers in PubMed, 103 citations in OpenAlex.

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  19. Role of Virus-Induced Host Cell Epigenetic Changes in Cancer.International journal of molecular sciences · 2021
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7 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 1 institution in 1 country.

Paula L HylandCentre for Cancer Research and Cell Biology, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom.
Simon S McDade
Rachel McCloskey
Glenda J Dickson
Ken Arthur
Dennis J McCance
Daksha Patel
Queen's University Belfast · GB

Funding

Medical Research Council G0700754Wellcome TrustWellcome Trust WT082840AIA
6 · The paper itself

Abstract

A number of epigenetic alterations occur in both the virus and host cellular genomes during human papillomavirus (HPV)-associated carcinogenesis, and investigations of such alterations, including changes in chromatin proteins and histone modifications, have the potential to lead to therapeutic epigenetic reversion. We report here that transformed HPV16 E6/E7-expressing primary human foreskin keratinocytes (HFKs) (E6/E7 cells) demonstrate increased expression of the PRC2 methyltransferase EZH2 at both the mRNA and protein levels but do not exhibit the expected increase in trimethylated H3K27 (H3K27me3) compared to normal keratinocytes. In contrast, these cells show a reduction in global H3K27me3 levels in vitro, as well as upregulation of the KDM6A demethylase. We further show for the first time that transformation with the HPV16 E6 and E7 oncogenes also results in an increase in phosphorylated EZH2 serine 21 (P-EZH2-Ser21), mediated by active Akt, and in a downregulation of the PRC1 protein BMI1 in these cells. High-grade squamous cervical intraepithelial lesions also showed a loss of H3K27me3 in the presence of increased expression of EZH2. Correlating with the loss of H3K27me3, E6/E7 cells exhibited derepression of specific EZH2-, KMD6A-, and BMI1-targeted HOX genes. These results suggest that the observed reduction in H3K27me3 may be due to a combination of reduced activities/levels of specific polycomb proteins and increases in demethylases. The dysregulation of multiple chromatin proteins resulting in the loss of global H3K27me3 and the transcriptional reprogramming in HPV16 E6/E7-infected cells could provide an epigenetic signature associated with risk and/or progression of HPV16-associated cancers, as well as the potential for epigenetic reversion in the future.

Indexed as

Epigenesis, GeneticCells, CulturedDNA-Binding ProteinsEnhancer of Zeste Homolog 2 ProteinGene Expression ProfilingHistone DemethylasesHost-Pathogen InteractionsHuman papillomavirus 16HumansKeratinocytesNuclear ProteinsOncogene Proteins, ViralPapillomavirus E7 ProteinsPolycomb Repressive Complex 1Polycomb Repressive Complex 2Proto-Oncogene ProteinsBMI1 protein, humanDNA-Binding ProteinsE6 protein, Human papillomavirus type 16Enhancer of Zeste Homolog 2 ProteinEZH2 protein, humanHistone DemethylasesKDM6A protein, humanNuclear Proteinsoncogene protein E7, Human papillomavirus type 16Oncogene Proteins, ViralPapillomavirus E7 ProteinsPolycomb Repressive Complex 1Polycomb Repressive Complex 2Proto-Oncogene ProteinsRepressor ProteinsTranscription Factors

Identifiers

PMID21865393
PMCPMC3194988
OpenAlexW1990914575

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.