Evidence map›Paper›PMID 22533343›Full record

ArticleCancer science2012

Isocitrate dehydrogenase 1 is downregulated during early skin tumorigenesis which can be inhibited by overexpression of manganese superoxide dismutase.

Delira Robbins, Jennifer A Wittwer, Sarah Codarin, Magdalena L Circu, Tak Yee Aw, Ting-Ting Huang, Holly Van Remmen, Arlan Richardson, David B Wang, Stephan N Witt and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Cancer science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.8field-weighted citation impact, top 26% 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

11 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Observational
  6. Review
  7. Article
  8. New Challenges to Study Heterogeneity in Cancer Redox Metabolism.Frontiers in cell and developmental biology · 2017
    Review
  9. Article
  10. Manganese superoxide dismutase in cancer prevention.Antioxidants & redox signaling · 2014
    Review
  11. 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

12 authors at 4 institutions in 1 country.

Delira RobbinsDepartment of Pharmacology, LSU Health Sciences Center, Shreveport, Louisiana, USA.
Jennifer A Wittwer
Sarah Codarin
Magdalena L Circu
Tak Yee Aw
Ting-Ting Huang
Holly Van Remmen
Arlan Richardson
David B Wang
Stephan N Witt
Ronald L Klein
Yunfeng Zhao
Louisiana State University Health Sciences Center Shreveport · USThe University of Texas Health Science Center at San Antonio · USThe Ohio State University · USVA Palo Alto Health Care System · US

Funding

Mechanisms of protection against alpha-synuclein-induced oxidative stressR01NS057656 · NINDS · LOUISIANA STATE UNIV HSC SHREVEPORT · PI WITT, STEPHAN N. · 2008 to 2012
$1.4M
PKM2 inhibition and redox regulation in chemopreventionR03CA167689 · NCI · LOUISIANA STATE UNIV HSC SHREVEPORT · PI ZHAO, YUNFENG · 2012 to 2013
$140k
BLRD VA I01 BX000517NCI NIH HHS R03 CA167689NINDS NIH HHS NS057656NINDS NIH HHS R01 NS057656
6 · The paper itself

Abstract

Isocitrate dehydrogenase 1 (IDH1), a cytosolic enzyme that converts isocitrate to alpha-ketoglutarate, has been shown to be dysregulated during tumorigenesis. However, at what stage of cancer development IDH1 is dysregulated and how IDH1 may affect cell transformation and tumor promotion during early stages of cancer development are unclear. We used a skin cell transformation model and mouse skin epidermal tissues to study the role of IDH1 in early skin tumorigenesis. Our studies demonstrate that both the tumor promoter TPA and UVC irradiation decreased expression and activity levels of IDH1, not IDH2, in the tumor promotable JB6 P+ cell model. Skin epidermal tissues treated with dimethylbenz[α]anthracene/TPA also showed decreases in IDH1 expression and activity. In non-promotable JB6 P-cells, IDH1 was upregulated upon TPA treatment, whereas IDH2 was maintained at similar levels with TPA treatment. Interestingly, IDH1 knockdown enhanced, whereas IDH1 overexpression suppressed, TPA-induced cell transformation. Finally, manganese superoxide dismutase overexpression suppressed tumor promoter induced decreases in IDH1 expression and mitochondrial respiration, while intracellular alpha-ketoglutarate levels were unchanged. These results suggest that decreased IDH1 expression in early stage skin tumorigenesis is highly correlated with tumor promotion. In addition, oxidative stress might contribute to IDH1 inactivation, because manganese superoxide dismutase, a mitochondrial antioxidant enzyme, blocked decreases in IDH1 expression and activity.

Indexed as

AnimalsAntioxidantsBlotting, WesternCell Transformation, NeoplasticDown-RegulationFluorescent Antibody TechniqueIsocitrate DehydrogenaseKeratinocytesMiceMice, Inbred DBAOxidative StressOxygen ConsumptionPapillomaRNA, Small InterferingSkinSkin NeoplasmsAntioxidantsIsocitrate DehydrogenaseRNA, Small InterferingSuperoxide DismutaseSuperoxide Dismutase 2

Identifiers

PMID22533343
PMCPMC3407305
OpenAlexW2067720603

What OpenQuestion holds

Textmetadata
LicenceTDM
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.