Evidence map›Paper›PMID 24691920›Full record

ArticleInternational journal of cancer2014

Calcium-sensing receptor silencing in colorectal cancer is associated with promoter hypermethylation and loss of acetylation on histone 3.

Irfete S Fetahu, Julia Höbaus, Abhishek Aggarwal, Doris M Hummel, Samawansha Tennakoon, Ildiko Mesteri, Sabina Baumgartner-Parzer, Enikő Kállay

Open access · hybridAbstract read
In one paragraph

Article in International journal of cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
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

18 citing papers in PubMed, 39 citations in OpenAlex.

  1. Molecular regulation of calcium-sensing receptor (CaSR)-mediated signaling.Chronic diseases and translational medicine · 2024
    Review
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  17. Persistence of furan-induced epigenetic aberrations in the livers of F344 rats.Toxicological sciences : an official journal of the Society of Toxicology · 2015
    Article
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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 1 institution in 1 country.

Irfete S FetahuDepartment of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria.
Julia Höbaus
Abhishek Aggarwal
Doris M Hummel
Samawansha Tennakoon
Ildiko Mesteri
Sabina Baumgartner-Parzer
Enikő Kállay
Medical University of Vienna · AT

Funding

Austrian Science Fund FWF P 22200
6 · The paper itself

Abstract

The calcium-sensing receptor (CaSR) is suggested to mediate the antiproliferative effects of calcium in colon. However, in colorectal cancer (CRC) the expression of the CaSR is silenced and the underlying mechanisms leading to its loss are poorly understood. We investigated whether loss of the CaSR expression in colorectal tumors is caused by DNA hypermethylation and imbalance of transcriptionally permissive/repressive histone alterations. We observed significantly lower CaSR mRNA expression (n = 65, p < 0.001) in colorectal tumors compared with the adjacent mucosa from the same patient. Immunofluorescence staining confirmed downregulation of the CaSR protein also. The CaSR promoter was methylated to a greater extent in tumors compared with adjacent mucosa as determined by bisulfite sequencing (n = 20, p < 0.01) and by pyrosequencing (n = 45, p < 0.001), and methylation correlated inversely with mRNA expression (n = 20, ρ = -0.310, p < 0.05 and n = 45, ρ = -0.588, p < 0.001). Treatments with 5-aza-2'-deoxycytidine (DAC), a DNA methyltransferase inhibitor and/or with two different histone deacetylase inhibitors, trichostatin A (TSA) or suberoylanilide hydroxamic acid (SAHA) restored the expression of CaSR in colon cancer cells. Restored CaSR expression in Coga1A and HT29 cells was functional. Inhibition of lysine-specific demethylase 1 (LSD1) to prevent demethylation of mono- and dimethylated H3K4, increased CaSR expression only marginally. Our data show that hypermethylation of the CaSR promoter and H3K9 deacetylation, but not H3K4me2 demethylation are important factors that cause silencing of the CaSR in colorectal cancer.

Indexed as

DNA MethylationGene SilencingAcetylationAgedApoptosisBlotting, WesternCell ProliferationChromatin ImmunoprecipitationColorectal NeoplasmsFemaleFluorescent Antibody TechniqueHistone Deacetylase InhibitorsHistonesHumansHydroxamic AcidsMaleCASR protein, humanHistone Deacetylase InhibitorsHistonesHydroxamic AcidsReceptors, Calcium-SensingRNA, Messengertrichostatin Acalcium-sensing receptorcolorectal cancerDNA methylationhistone acetylationhistone methylation

Identifiers

PMID24691920
PMCPMC4282356
OpenAlexW1914590533

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.