Evidence map›Paper›PMID 17456767›Full record

ArticleThe American journal of pathology2007

Epigenetic silencing through DNA and histone methylation of fibroblast growth factor receptor 2 in neoplastic pituitary cells.

Xuegong Zhu, Katie Lee, Sylvia L Asa, Shereen Ezzat

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of pathology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
2.5field-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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 93 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. DNA Methylation in Pituitary Adenomas: A Scoping Review.International journal of molecular sciences · 2025
    Article
  5. Review
  6. Targeting FGFR for cancer therapy.Journal of hematology & oncology · 2024
    Review
  7. Potential roles of FGF5 as a candidate therapeutic target in prostate cancer.American journal of clinical and experimental urology · 2023
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. FGF/FGFR signaling in health and disease.Signal transduction and targeted therapy · 2020
    Review
  14. Review
  15. Review
  16. The Genetics of Pituitary Adenomas.Journal of clinical medicine · 2019
    Review
  17. The Epigenomics of Pituitary Adenoma.Frontiers in endocrinology · 2019
    Review
  18. Article
  19. Article
  20. Animal models of pituitary neoplasia.Molecular and cellular endocrinology · 2016
    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

4 authors at 3 institutions in 1 country.

Xuegong ZhuDepartment of Medicine, Mount Sinai Hospital and University of Toronto, Canada.
Katie Lee
Sylvia L Asa
Shereen Ezzat
Ontario Institute for Cancer Research · CAUniversity Health Network · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Four members of the fibroblast growth factor receptor (FGFR) family of tyrosine kinases transduce signals of a diverse group of more than 23 fibroblast growth factor (FGF) ligands. Each prototypic receptor is composed of three immunoglobulin-like extracellular domains, two of which are involved in ligand binding. Alternative RNA splicing of one of two exons results in two different forms of the second half of the third immunoglobulin-like domain, the IIIb or IIIc isoforms. The contribution of each receptor and their isoforms in tumorigenesis remains unknown. In the pituitary, FGFR2 is expressed primarily as the IIIb isoform in normal adenohypophysial cells. In contrast, FGFR2 is significantly down-regulated in mouse corticotroph AtT20 tumor cells where the 5' promoter is methylated. Treatment of AtT20 cells with 5'-azacytidine resulted in FGFR2 re-expression, mainly as the FGFR2-IIIb isoform. Chromatin immunoprecipitation revealed evidence of histone methylation, but not of deacetylation, in the silencing of FGFR2 in AtT20 cells. Exposure of these cells to the cognate FGFR2-IIIb ligand FGF-7 resulted in diminished Rb phosphorylation and accumulation of p21 and p27, indicating diminished cell cycle progression. Examination of primary human pituitary adenomas revealed FGFR2 down-regulation in 52% (11 of 21) of samples and FGFR2 promoter DNA methylation in 45% (10 of 22) of samples. These data highlight the contribution from DNA and histone methylation as epigenetic mechanisms responsible for FGFR2 silencing in pituitary neoplasia.

Indexed as

DNA MethylationGene SilencingAlternative SplicingAnimalsBase SequenceBlotting, WesternFemaleHistonesHumansImmunohistochemistryImmunoprecipitationMaleMicePituitary NeoplasmsProtein IsoformsReceptor, Fibroblast Growth Factor, Type 2HistonesProtein IsoformsReceptor, Fibroblast Growth Factor, Type 2

Identifiers

PMID17456767
PMCPMC1854956
OpenAlexW2010625291

What OpenQuestion holds

Textmetadata
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.