Evidence map›Paper›PMID 17325663›Full record

ArticleOncogene2007

Epigenetic inactivation of the tissue inhibitor of metalloproteinase-2 (TIMP-2) gene in human prostate tumors.

S M Pulukuri, S Patibandla, J Patel, N Estes, J S Rao

Open access · greenAbstract read
In one paragraph

Article in Oncogene, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 7% 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

58 citing papers in PubMed, 2 syntheses or guidelines pooled it, 95 citations in OpenAlex.

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  19. A survey of metastasis suppressors in Metazoa.Laboratory investigation; a journal of technical methods and pathology · 2018
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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

5 authors at 3 institutions in 1 country.

S M PulukuriDepartment of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL 61656, USA.
S Patibandla
J Patel
N Estes
J S Rao
University of Illinois Chicago · USPeoria campus of the University of Illinois System · USUniversity of Illinois Urbana-Champaign · US

Funding

Cath B and uPAR si RNA constructs regressed glioma growthR01CA116708 · NCI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI O'BRYAN, JOHN P · 2005 to 2014
$2.9M
Inhibition of glioma tumor growth by antisense MMP-9R01NS047699 · NINDS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI RAO, JASTI S. · 2003 to 2011
$2.5M
Role of uPA and uPAR in Human Glioma InvasivenessR01CA075557 · NCI · UNIVERSITY OF TEXAS MD ANDERSON CAN CTR · PI RAO, JASTI S. · 1998 to 2009
$2.3M
Growth inhibition of brain tumors by cord blood stem cellsR01NS057529 · NINDS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI RAO, JASTI S. · 2006 to 2010
$1.8M
Role of TFPI-2 in human gliomas invasivenessR01CA095058 · NCI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI RAO, JASTI S. · 2003 to 2007
$1.5M
Suppression of glioma invasion by a bicistronic constuctR01CA092393 · NCI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI RAO, JASTI S. · 2003 to 2007
$1.4M
NCI NIH HHS CA116708NCI NIH HHS CA75557NCI NIH HHS CA92393NCI NIH HHS CA95058NCI NIH HHS R01 CA075557NCI NIH HHS R01 CA092393NCI NIH HHS R01 CA095058NCI NIH HHS R01 CA116708NINDS NIH HHS NS47699NINDS NIH HHS NS57529NINDS NIH HHS R01 NS047699NINDS NIH HHS R01 NS057529
6 · The paper itself

Abstract

Gene silencing via CpG island methylation in the promoter region is one of the mechanisms by which tumor suppressor genes are inactivated in human cancers. Previous studies have shown that the tissue inhibitors of metalloproteinases (TIMP)-2 gene, which is an endogenous inhibitor of matrix metalloproteinases involved in cell invasion and tumorigenesis, is downregulated or silenced in a variety of human cancer cell lines. Here, we investigated the mechanism underlying TIMP-2 expression in prostate cancer cell lines and primary prostate tumor samples. We observed a strong correlation between promoter hypermethylation and lost expression of TIMP-2 gene, which was supported by other results demonstrating that promoter demethylation by 5-aza-2'-deoxycytidine and trichostatin A reactivated TIMP-2 and restored its expression in TIMP-2-silenced metastatic prostate cell lines. These results were further substantiated by a chromatin immunoprecipitation assay, showing the preferential binding of MeCP2 to methylated CpG island in TIMP-2-silenced metastatic prostate cell lines. In vitro Matrigel invasion assays showed that re-expression of TIMP-2 after a combined treatment with 5-aza and trichostatin-A in metastatic prostate cells resulted in a significant reduction of tumor cell invasion. Furthermore, CpG methylation of TIMP-2 promoter was also shown in primary prostate tumors that expressed decreased TIMP-2 protein levels. These results suggest that the downregulation of the TIMP-2 gene is associated with promoter methylation and that this may play an important role in prostate cancer progression during the invasive and metastatic stages of the disease.

Indexed as

Epigenesis, GeneticGene SilencingBase SequenceDNA MethylationDNA PrimersDown-RegulationHumansImmunohistochemistryMaleNeoplasm MetastasisPromoter Regions, GeneticProstatic NeoplasmsReverse Transcriptase Polymerase Chain ReactionTissue Inhibitor of Metalloproteinase-2DNA PrimersTissue Inhibitor of Metalloproteinase-2

Identifiers

PMID17325663
PMCPMC2084378
OpenAlexW2054084446

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.