Evidence map›Paper›PMID 34906184›Full record

ArticleEpigenetics & chromatin2021

The DNMT1 inhibitor GSK-3484862 mediates global demethylation in murine embryonic stem cells.

Nathalia Azevedo Portilho, Deepak Saini, Ishtiaque Hossain, Jacinthe Sirois, Christopher Moraes, William A Pastor

Open access · goldAbstract read
In one paragraph

Article in Epigenetics & chromatin, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

40 citing papers in PubMed, 65 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Nathalia Azevedo PortilhoDepartment of Biochemistry, McGill University, Montreal, QC, H3G 1Y6, Canada.
Deepak Saini *Department of Biochemistry, McGill University, Montreal, QC, H3G 1Y6, Canada.
Ishtiaque Hossain *Department of Biochemistry, McGill University, Montreal, QC, H3G 1Y6, Canada.
Jacinthe SiroisDepartment of Biochemistry, McGill University, Montreal, QC, H3G 1Y6, Canada.
Christopher MoraesDepartment of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada.
William A PastorDepartment of Biochemistry, McGill University, Montreal, QC, H3G 1Y6, Canada. william.pastor@mcgill.ca.ORCID 0000-0003-4176-5299
McGill University · CAMcGill University Health Centre · CA

Funding

CIHR PJT-166169
6 · The paper itself

Abstract

backgroundDNA methylation plays an important role in regulating gene expression in mammals. The covalent DNMT1 inhibitors 5-azacytidine and decitabine are widely used in research to reduce DNA methylation levels, but they impart severe cytotoxicity which limits their demethylation capability and confounds interpretation of experiments. Recently, a non-covalent inhibitor of DNMT1 called GSK-3484862 was developed by GlaxoSmithKline. We sought to determine whether GSK-3484862 can induce demethylation more effectively than 5-azanucleosides. Murine embryonic stem cells (mESCs) are an ideal cell type in which to conduct such experiments, as they have a high degree of DNA methylation but tolerate dramatic methylation loss.

resultsWe determined the cytotoxicity and optimal concentration of GSK-3484862 by treating wild-type (WT) or Dnmt1/3a/3b triple knockout (TKO) mESC with different concentrations of the compound, which was obtained from two commercial sources. Concentrations of 10 µM or below were readily tolerated for 14 days of culture. Known DNA methylation targets such as germline genes and GLN-family transposons were upregulated within 2 days of the start of GSK-3484862 treatment. By contrast, 5-azacytidine and decitabine induced weaker upregulation of methylated genes and extensive cell death. Whole-genome bisulfite sequencing showed that treatment with GSK-3484862 induced dramatic DNA methylation loss, with global CpG methylation levels falling from near 70% in WT mESC to less than 18% after 6 days of treatment with GSK-3484862. The treated cells showed a methylation level and pattern similar to that observed in Dnmt1-deficient mESCs.

conclusionsGSK-3484862 mediates striking demethylation in mESCs with minimal non-specific toxicity.

Indexed as

DNA (Cytosine-5-)-MethyltransferasesEmbryonic Stem CellsAnimalsAzacitidineDemethylationDNA MethylationMiceAzacitidineDNA (Cytosine-5-)-Methyltransferases5-AzacytidineDecitabineDemethylationDNA methylationDNMT1GSK-3484862GSK-3685032Whole-genome bisulfite sequencing

Identifiers

PMID34906184
PMCPMC8672470
OpenAlexW4200604587

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.