Evidence map›Paper›PMID 20935456›Full record

ArticleCancer biology & therapy2010

Inhibition of NADPH oxidase by glucosylceramide confers chemoresistance.

Brian M Barth, Sally J Gustafson, Megan M Young, Todd E Fox, Sriram S Shanmugavelandy, James M Kaiser, Myles C Cabot, Mark Kester, Thomas B Kuhn

Open access · bronzeAbstract read
In one paragraph

Article in Cancer biology & therapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

20 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. The Role of Ceramide and Sphingolipid Metabolism in Cancer Therapeutics.Journal of oncology research and therapy · 2024
    Article
  3. Article
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  5. Article
  6. Review
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  11. Article
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  13. Article
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  15. Review
  16. Article
  17. Gaucher's disease and cancer: a sphingolipid perspective.Critical reviews in oncogenesis · 2013
    Review
  18. 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

9 authors at 3 institutions in 1 country.

Brian M BarthProgram in Biochemistry and Molecular Biology, Department of Chemistry and Biochemistry, University of Alaska-Fairbanks, Fairbanks, AK, USA.
Sally J Gustafson
Megan M Young
Todd E Fox
Sriram S Shanmugavelandy
James M Kaiser
Myles C Cabot
Mark Kester
Thomas B Kuhn
Pennsylvania State University · USUniversity of Alaska Fairbanks · USSaint John's Health Center · US

Funding

Rac-1 mediated superoxide signaling in neuronsU54NS041069 · NINDS · UNIVERSITY OF ALASKA FAIRBANKS · PI DUFFY, LAWRENCE K · 2000 to 2011
$14.1M
Ceramide, Membrane Glycolipids and Glycoprotein ExpressionR01GM077391 · NIGMS · SAINT JOHN'S CANCER INSTITUTE · PI CABOT, MYLES C. · 2007 to 2010
$1.9M
NIGMS NIH HHS GM77391NIGMS NIH HHS R01 GM077391NINDS NIH HHS U54 NS041069NINDS NIH HHS U54 NS41069
6 · The paper itself

Abstract

The bioactive sphingolipid ceramide induces oxidative stress by disrupting mitochondrial function and stimulating NADPH oxidase (NOX) activity, both implicated in cell death mechanisms. Many anticancer chemotherapeutics (anthracyclines, Vinca alkaloids, paclitaxel, and fenretinide), as well as physiological stimuli such as tumor necrosis factor α (TNFα), stimulate ceramide accumulation and increase oxidative stress in malignant cells. Consequently, ceramide metabolism in malignant cells and, in particular the up-regulation of glucosylceramide synthase (GCS), has gained considerable interest in contributing to chemoresistance. We hypothesized that increases in GCS activity and thus glucosylceramide, the product of GCS activity, represents an important resistance mechanism in glioblastoma. In our study, we determined that increased GCS activity effectively blocked reactive oxygen species formation by NOX. We further showed, in both glioblastoma and neuroblastoma cells that glucosylceramide directly interfered with NOX assembly, hence delineating a direct resistance mechanism. Collectively, our findings indicated that pharmacological or molecular targeting of GCS, using non-toxic nanoliposome delivery systems, successfully augmented NOX activity, and improved the efficacy of known chemotherapeutic agents.

Indexed as

CatalaseCell Line, TumorCell SurvivalDoxorubicinDrug Resistance, NeoplasmGlioblastomaGlucosylceramidesGlucosyltransferasesHumansNADPH OxidasesNeuroblastomaOxidative StressReactive Oxygen SpeciesRNA, Small InterferingSuperoxide DismutaseTumor Necrosis Factor-alphaCatalaseceramide glucosyltransferaseDoxorubicinGlucosylceramidesGlucosyltransferasesNADPH OxidasesReactive Oxygen SpeciesRNA, Small InterferingSuperoxide DismutaseTumor Necrosis Factor-alpha

Identifiers

PMID20935456
PMCPMC3047104
OpenAlexW2065140134

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.