Evidence map›Paper›PMID 26983574›Full record

ArticleBMC cancer2016

Epigenetic silencing of miR-181c by DNA methylation in glioblastoma cell lines.

Erandi Ayala-Ortega, Rodrigo Arzate-Mejía, Rosario Pérez-Molina, Edgar González-Buendía, Karin Meier, Georgina Guerrero, Félix Recillas-Targa

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. MicroRNA-181 in cardiovascular disease: Emerging biomarkers and therapeutic targets.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
    Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Epigenetic Control of a Local Chromatin Landscape.International journal of molecular sciences · 2020
    Review
  10. Article
  11. Review
  12. Dancing from bottoms up - Roles of the POZ-ZF transcription factor Kaiso in Cancer.Biochimica et biophysica acta. Reviews on cancer · 2019
    Review
  13. Review
  14. Article
  15. Article
  16. Developing in 3D: the role of CTCF in cell differentiation.Development (Cambridge, England) · 2018
    Review
  17. Epigenetics and MicroRNAs in Cancer.International journal of molecular sciences · 2018
    Review
  18. Article
  19. Review
  20. MicroRNA in Glioblastoma: An Overview.International journal of genomics · 2017
    Review
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.

Erandi Ayala-OrtegaInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Rodrigo Arzate-MejíaInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Rosario Pérez-MolinaInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Edgar González-BuendíaInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Karin MeierInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Georgina GuerreroInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México.
Félix Recillas-TargaInstituto de Fisiología Celular, Departamento de Genética Molecular, Universidad Nacional Autónoma de México, Ciudad de México, México. frecilla@ifc.unam.mx.
Universidad Nacional Autónoma de México · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPost-transcriptional regulation by microRNAs is recognized as one of the major pathways for the control of cellular homeostasis. Less well understood is the transcriptional and epigenetic regulation of genes encoding microRNAs. In the present study we addressed the epigenetic regulation of the miR-181c in normal and malignant brain cells.

methodsTo explore the epigenetic regulation of the miR-181c we evaluated its expression using RT-qPCR and the in vivo binding of the CCCTC-binding factor (CTCF) to its regulatory region in different glioblastoma cell lines. DNA methylation survey, chromatin immunoprecipitation and RNA interference assays were used to assess the role of CTCF in the miR-181c epigenetic silencing.

resultsWe found that miR-181c is downregulated in glioblastoma cell lines, as compared to normal brain tissues. Loss of expression correlated with a notorious gain of DNA methylation at the miR-181c promoter region and the dissociation of the multifunctional nuclear factor CTCF. Taking advantage of the genomic distribution of CTCF in different cell types we propose that CTCF has a local and cell type specific regulatory role over the miR-181c and not an architectural one through chromatin loop formation. This is supported by the depletion of CTCF in glioblastoma cells affecting the expression levels of NOTCH2 as a target of miR-181c.

conclusionTogether, our results point to the epigenetic role of CTCF in the regulation of microRNAs implicated in tumorigenesis.

Indexed as

Biomarkers, TumorCCCTC-Binding FactorCell Line, TumorDNA MethylationEpigenesis, GeneticGene Expression Regulation, NeoplasticGene SilencingGlioblastomaHumansMicroRNAsReceptor, Notch2Repressor ProteinsBiomarkers, TumorCCCTC-Binding FactorCTCF protein, humanMicroRNAsMIRN-181 microRNA, humanNOTCH2 protein, humanReceptor, Notch2Repressor ProteinsCCCTC-binding factor (CTCF)DNA methylationEpigeneticsGlioblastoma cellsRNA interference

Identifiers

PMID26983574
PMCPMC4794844
OpenAlexW2299940155

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.