Evidence map›Paper›PMID 25347326›Full record

ArticlePloS one2014

Down regulation of Wnt signaling mitigates hypoxia-induced chemoresistance in human osteosarcoma cells.

Donald J Scholten, Christine M Timmer, Jacqueline D Peacock, Dominic W Pelle, Bart O Williams, Matthew R Steensma

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

23 citing papers in PubMed, 41 citations in OpenAlex.

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  20. Bone microenvironment signals in osteosarcoma development.Cellular and molecular life sciences : CMLS · 2015
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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

6 authors at 5 institutions in 1 country.

Donald J ScholtenMichigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America; Van Andel Research Institute, Grand Rapids, Michigan, United States of America.
Christine M TimmerMichigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America.
Jacqueline D PeacockVan Andel Research Institute, Grand Rapids, Michigan, United States of America.
Dominic W PelleMichigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America; Van Andel Research Institute, Grand Rapids, Michigan, United States of America; Helen DeVos Childen's Hospital, Spectrum Health System, Grand Rapids, Michigan, United States of America.
Bart O WilliamsVan Andel Research Institute, Grand Rapids, Michigan, United States of America.
Matthew R SteensmaMichigan State University College of Human Medicine, Grand Rapids, Michigan, United States of America; Van Andel Research Institute, Grand Rapids, Michigan, United States of America; Helen DeVos Childen's Hospital, Spectrum Health System, Grand Rapids, Michigan, United States of America.
Van Andel Institute · USGrand Rapids Community College · USMichigan State University · USMichigan United · USSpectrum Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Osteosarcoma (OS) is the most common type of solid bone cancer and remains the second leading cause of cancer-related death for children and young adults. Hypoxia is an element intrinsic to most solid-tumor microenvironments, including that of OS, and is associated with resistance to therapy, poor survival, and a malignant phenotype. Cells respond to hypoxia through alterations in gene expression, mediated most notably through the hypoxia-inducible factor (HIF) class of transcription factors. Here we investigate hypoxia-induced changes in the Wnt/β-catenin signaling pathway, a key signaling cascade involved in OS pathogenesis. We show that hypoxia results in increased expression and signaling activation of HIF proteins in human osteosarcoma cells. Wnt/β-catenin signaling is down-regulated by hypoxia in human OS cells, as demonstrated by decreased active β-catenin protein levels and axin2 mRNA expression (p<0.05). This down-regulation appears to rely on both HIF-independent and HIF-dependent mechanisms, with HIF-1α standing out as an important regulator. Finally, we show that hypoxia results in resistance of human OS cells to doxorubicin-mediated toxicity (6-13 fold increase, p<0.01). These hypoxic OS cells can be sensitized to doxorubicin treatment by further inhibition of the Wnt/β-catenin signaling pathway (p<0.05). These data support the conclusion that Wnt/β-catenin signaling is down-regulated in human OS cells under hypoxia and that this signaling alteration may represent a viable target to combat chemoresistant OS subpopulations in a hypoxic niche.

Indexed as

Down-RegulationDrug Resistance, NeoplasmWnt Signaling PathwayCell HypoxiaCell Line, TumorDoxorubicinHumansHypoxia-Inducible Factor 1, alpha SubunitOsteosarcomaOxygenDoxorubicinHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitOxygen

Identifiers

PMID25347326
PMCPMC4210185
OpenAlexW2032583877

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.