Evidence map›Paper›PMID 17329407›Full record

ArticleNeuro-oncology2007

Dickkopf-1 is an epigenetically silenced candidate tumor suppressor gene in medulloblastoma.

Rajeev Vibhakar, Greg Foltz, Jae-Geun Yoon, Lorie Field, Hwahyung Lee, Gi-Yung Ryu, Jessica Pierson, Beverly Davidson, Anup Madan

Abstract read
In one paragraph

Article in Neuro-oncology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
–field-weighted citation impact
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

45 citing papers in PubMed.

  1. Review
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  4. Differential molecular mechanistic behavior of HDACs in cancer progression.Medical oncology (Northwood, London, England) · 2022
    Review
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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

9 authors.

Rajeev VibhakarDepartment of Pediatric, University of Iowa, Iowa City, IA 52242, USA. Rajeev-Vibhakar@uiowa.edu
Greg Foltz
Jae-Geun Yoon
Lorie Field
Hwahyung Lee
Gi-Yung Ryu
Jessica Pierson
Beverly Davidson
Anup Madan

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Medulloblastoma is a heterogeneous pediatric brain tumor with significant therapy-related morbidity, its five-year survival rates ranging from 30% to 70%. Improvement in diagnosis and therapy requires better understanding of medulloblastoma pathology. We used whole-genome microarray analysis to identify putative tumor suppressor genes silenced by epigenetic mechanisms in medulloblastoma. This analysis yielded 714 up-regulated genes in immortalized medulloblastoma cell line D283 on treatment with histone deacetylase (HDAC) inhibitor trichostatin A (TSA). Dickkopf-1 (DKK1), a Wnt antagonist, was found to be up-regulated on HDAC inhibition. We examined DKK1 expression in primary medulloblastoma cells and patient samples by reverse transcriptase PCR and found it to be significantly down-regulated relative to normal cerebellum. Transfection of a DKK1 gene construct into D283 cell lines suppressed medulloblastoma tumor growth in colony focus assays by 60% (P < 0.001). In addition, adenoviral vector-mediated expression of DKK1 in medulloblastoma cells increased apoptosis fourfold (P < 0.001). These data reveal that inappropriate histone modifications might deregulate DKK1 expression in medulloblastoma tumorigenesis and block its tumor-suppressive activity.

Indexed as

Genes, Tumor SuppressorCell DivisionCerebellar NeoplasmsChromatinColony-Forming Units AssayEnzyme InhibitorsGene Expression Regulation, NeoplasticGene SilencingHistone Deacetylase InhibitorsHumansHydroxamic AcidsIntercellular Signaling Peptides and ProteinsMedulloblastomaOligonucleotide Array Sequence AnalysisReverse Transcriptase Polymerase Chain ReactionSurvival AnalysisChromatinDKK1 protein, humanEnzyme InhibitorsHistone Deacetylase InhibitorsHydroxamic AcidsIntercellular Signaling Peptides and Proteinstrichostatin A

Identifiers

PMID17329407
PMCPMC1871668

What OpenQuestion holds

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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.