Evidence map›Paper›PMID 26421063›Full record

ArticleClinical epigenetics2015

Transgelin gene is frequently downregulated by promoter DNA hypermethylation in breast cancer.

Nilufer Sayar, Gurbet Karahan, Ozlen Konu, Betul Bozkurt, Onder Bozdogan, Isik G Yulug

Open access · goldAbstract read
In one paragraph

Article in Clinical epigenetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Evolution and function of calponin and transgelin.Frontiers in cell and developmental biology · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Quantitative Expression ofGenetics research · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. OncogenicOncotarget · 2018
    Article
  19. Article
  20. Article
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.

Nilufer SayarDepartment of Molecular Biology and Genetics, Bilkent University, Faculty of Science, TR-06800 Ankara, Turkey.
Gurbet KarahanDepartment of Molecular Biology and Genetics, Bilkent University, Faculty of Science, TR-06800 Ankara, Turkey.
Ozlen KonuDepartment of Molecular Biology and Genetics, Bilkent University, Faculty of Science, TR-06800 Ankara, Turkey.
Betul BozkurtDepartment of General Surgery, Ankara Numune Training and Research Hospital, 06100 Ankara, Turkey.
Onder BozdoganDepartment of Pathology, Ankara Numune Training and Research Hospital, 06100 Ankara, Turkey.
Isik G YulugDepartment of Molecular Biology and Genetics, Bilkent University, Faculty of Science, TR-06800 Ankara, Turkey.
Bilkent University · TRAnkara Numune Eğitim ve Araştırma Hastanesi · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCpG hypermethylation in gene promoters is a frequent mechanism of tumor suppressor gene silencing in various types of cancers. It usually occurs at early steps of cancer progression and can be detected easily, giving rise to development of promising biomarkers for both detection and progression of cancer, including breast cancer. 5-aza-2'-deoxycytidine (AZA) is a DNA demethylating and anti-cancer agent resulting in induction of genes suppressed via DNA hypermethylation.

resultsUsing microarray expression profiling of AZA- or DMSO-treated breast cancer and non-tumorigenic breast (NTB) cells, we identified for the first time TAGLN gene as a target of DNA hypermethylation in breast cancer. TAGLN expression was significantly and frequently downregulated via promoter DNA hypermethylation in breast cancer cells compared to NTB cells, and also in 13/21 (61.9 %) of breast tumors compared to matched normal tissues. Analyses of public microarray methylation data showed that TAGLN was also hypermethylated in 63.02 % of tumors compared to normal tissues; relapse-free survival of patients was worse with higher TAGLN methylation; and methylation levels could discriminate between tumors and healthy tissues with 83.14 % sensitivity and 100 % specificity. Additionally, qRT-PCR and immunohistochemistry experiments showed that TAGLN expression was significantly downregulated in two more independent sets of breast tumors compared to normal tissues and was lower in tumors with poor prognosis. Colony formation was increased in TAGLN silenced NTB cells, while decreased in overexpressing BC cells.

conclusionsTAGLN gene is frequently downregulated by DNA hypermethylation, and TAGLN promoter methylation profiles could serve as a future diagnostic biomarker, with possible clinical impact regarding the prognosis in breast cancer.

Indexed as

Breast cancerDiagnosisDNA methylationHypermethylationPrognosisSM22 alphaTAGLN

Identifiers

PMID26421063
PMCPMC4587865
OpenAlexW1786493501

What OpenQuestion holds

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LicenceCC BY
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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.