Evidence map›Paper›PMID 20446773›Full record

ArticleAntioxidants & redox signaling2010

Gain of Nrf2 function in non-small-cell lung cancer cells confers radioresistance.

Anju Singh, Manish Bodas, Nobunao Wakabayashi, Fred Bunz, Shyam Biswal

Abstract read
In one paragraph

Article in Antioxidants & redox signaling, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 3% 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

119 citing papers in PubMed, 1 synthesis or guideline pooled it, 212 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. TheCancer management and research · 2026
    Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Role of STING in the treatment of non-small cell lung cancer.Cell communication and signaling : CCS · 2024
    Review
  18. Article
  19. Article
  20. Review

59 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Anju SinghDepartment of Environmental Health Sciences, Johns Hopkins University, Baltimore, Maryland, USA.
Manish Bodas
Nobunao Wakabayashi
Fred Bunz
Shyam Biswal
Johns Hopkins University · USJohns Hopkins Medicine · US

Funding

TARGETING EARLY CHANGES FOR NEW SCREENING STRATEGIESP50CA058184 · NCI · JOHNS HOPKINS UNIVERSITY · PI BISWAL, SHYAM · 1992 to 2013
$30.5M
PILOT STUDY--ACID FOG, AN EXPERIMENTAL MODELP30ES003819 · NIEHS · JOHNS HOPKINS UNIVERSITY · PI GROOPMAN, JOHN D · 1985 to 2012
$22.6M
Regulation of Tumorigenesis and therapeutic resistance by Nrf2 in lung cancerR01CA140492 · NCI · JOHNS HOPKINS UNIVERSITY · PI BISWAL, SHYAM · 2010 to 2014
$1.8M
NCI NIH HHS P50 CA058184NCI NIH HHS R01 CA140492NIEHS NIH HHS P30 ES003819
6 · The paper itself

Abstract

Nuclear factor erythroid-2 related factor 2 (Nrf2), a redox-sensitive transcription factor, regulates the expression of antioxidant enzymes and several anti-apoptotic proteins, which confer cytoprotection against oxidative stress and apoptosis. Constitutive activation of Nrf2 in lung cancer cells promotes tumorigenicity and contributes to chemoresistance by upregulation of glutathione, thioredoxin, and the drug efflux pathways involved in detoxification of electrophiles and broad spectrum of drugs. In this study, we show that RNAi-mediated lowering of Nrf2 levels in non-small-cell lung cancer (NSCLC) cell lines (A549 and H460) led to a dramatic increase in endogenous reactive oxygen species (ROS) levels. Similarly, γ-irradiation-induced formation of protein carbonyls were significantly higher in Nrf2-depleted lung cancer cells, suggesting increased lethality of ionizing radiation in the absence of Nrf2. Radiation-induced protein oxidation in Nrf2shRNA cells correlated with reduced survival as measured by clonogenic assay. Radiation-induced cell death was abrogated by pretreatment with antioxidants such as N-acetyl-L-cysteine, glutathione, and vitamin-E, highlighting the importance of antioxidants in conferring protection against radiation injury. Using genetically-modified gain and loss of function models of Nrf2, in mouse embryonic fibroblasts, we establish that constitutive activation of Nrf2 protects against ionizing radiation toxicity and confers radioresistance. Thus, targeting Nrf2 activity in radioresistant tumors could be a promising strategy to circumvent radioresistance.

Indexed as

Radiation ToleranceAnimalsAntioxidantsApoptosisCarcinoma, Non-Small-Cell LungCell Line, TumorDown-RegulationFibroblastsHumansMiceMice, KnockoutNF-E2-Related Factor 2Oxidation-ReductionOxidative StressReactive Oxygen SpeciesRNA InterferenceAntioxidantsNFE2L2 protein, humanNfe2l2 protein, mouseNF-E2-Related Factor 2Reactive Oxygen SpeciesRNA, Small Interfering

Identifiers

PMID20446773
PMCPMC3541552
OpenAlexW2168973737

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.