Evidence map›Paper›PMID 24833465›Full record

ArticleMolecular and cellular biochemistry2014

Histone methyltransferase G9a and H3K9 dimethylation inhibit the self-renewal of glioma cancer stem cells.

Hong Tao, Haiying Li, Yanhuang Su, Danni Feng, Xilong Wang, Chun Zhang, Hui Ma, Qikuan Hu

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In one paragraph

Article in Molecular and cellular biochemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

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  17. EHMT2/G9a as an Epigenetic Target in Pediatric and Adult Brain Tumors.International journal of molecular sciences · 2021
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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

8 authors at 4 institutions in 1 country.

Hong TaoDepartment of Physiology, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750004, Ningxia, China.
Haiying Li
Yanhuang Su
Danni Feng
Xilong Wang
Chun Zhang
Hui Ma
Qikuan Hu
Ningxia Medical University · CNHigh Magnetic Field Laboratory · CNInner Mongolia Medical College Hospital · CNNingxia Medical University General Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Epigenetic modification is crucial to keep the self-renewal and the "stemness" states of stem cells, not letting them to differentiate. The actual roles of Histone 3 Lysine 9 dimethylation (H3K9me2) and its methyltransferase G9a in this process are still unclear, especially in cancer stem cells. In our study, we found an interesting observation that most CD133-positive cells were H3K9me2 negative, both in glioma tissues and in cultured cells, although most cancer cells were detected to be H3K9me2 immunopositive. This implied that the G9a-dependent H3K9me2 was one of the crucial barriers of cancer stem cell self-renewal. To test the hypothesis, we examined the loss-of-function and gain-of-function of G9a. We found that bix01294, the selective inhibitor of G9a, can stimulate the sphere formation rate of glioma cancer stem cells, together with increasing Sox2 and CD133 expressions. The increase of CD133-active stem cells was confirmed by flow cytometry. On the other aspect, overexpression of G9a increased the H3K9me2 and decreased the sphere formation rate as well as the CD133 and Sox2 expressions. Since H3K9me2 modification is the major repressive switch, we predict that the repressive H3K9me2 modification may happen at the CD133 promoter regions. By chromatin precipitation assay, we confirmed that the CD133 and Sox2 promoter regions were modified by the H3K9me2. Therefore, we concluded that the G9a-dependent H3K9me2 repression on CD133 and Sox2 was one of the main switches of the self-renewal in glioma cancer stem cells.

Indexed as

Cell ProliferationAC133 AntigenAntigens, CDAzepinesBrain NeoplasmsCell Line, TumorEnzyme InhibitorsGene Expression Regulation, NeoplasticGliomaGlycoproteinsHistocompatibility AntigensHistone-Lysine N-MethyltransferaseHistonesHumansLysineMethylationAC133 AntigenAntigens, CDAzepinesBIX 01294EHMT2 protein, humanEnzyme InhibitorsGlycoproteinsHistocompatibility AntigensHistone-Lysine N-MethyltransferaseHistonesLysinePeptidesPROM1 protein, humanQuinazolinesSOX2 protein, humanSOXB1 Transcription Factors

Identifiers

PMID24833465
OpenAlexW2060196800

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.