Evidence map›Paper›PMID 19437244›Full record

ArticleInternational journal of radiation biology2009

Radioresistance of Stat1 over-expressing tumour cells is associated with suppressed apoptotic response to cytotoxic agents and increased IL6-IL8 signalling.

Elena V Efimova, Hua Liang, Sean P Pitroda, Edwardine Labay, Thomas E Darga, Vera Levina, Anna Lokshin, Bernard Roizman, Ralph R Weichselbaum, Nikolai N Khodarev

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in International journal of radiation biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

24 citing papers in PubMed, 54 citations in OpenAlex.

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  11. Melittin radiosensitizes esophageal squamous cell carcinoma with induction of apoptosis in vitro and in vivo.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
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  12. Review
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  20. Breast cancer stem cells: we've got them surrounded.Clinical cancer research : an official journal of the American Association for Cancer Research · 2013
    Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Elena V EfimovaDepartment of Radiation and Cellular Oncology, The University of Chicago, Illinois 60637, USA.
Hua Liang
Sean P Pitroda
Edwardine Labay
Thomas E Darga
Vera Levina
Anna Lokshin
Bernard Roizman
Ralph R Weichselbaum
Nikolai N Khodarev
University of Pittsburgh · USUniversity of Illinois Chicago · US

Funding

Virus Production CoreP01CA071933 · NCI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI WEICHSELBAUM, RALPH R · 1997 to 2013
$14.5M
Mechanisms of Resistance to Radio Inducible Gene TherapyR01CA111423 · NCI · UNIVERSITY OF CHICAGO · PI WEICHSELBAUM, RALPH R · 2005 to 2009
$1.5M
DNA Damage Targeted Gene Therapy in Head &Neck CancerR01CA113662 · NCI · UNIVERSITY OF CHICAGO · PI WEICHSELBAUM, RALPH R · 2005 to 2009
$1.4M
NCI NIH HHS P01 CA071933NCI NIH HHS P01-CA71933NCI NIH HHS R01 CA111423NCI NIH HHS R01 CA113662NCI NIH HHS R01-CA113662
6 · The paper itself

Abstract

purposeTo determine the mechanisms of Signal Transducer and Activator of Transcription 1 (Stat1)-associated radioresistance developed by nu61 tumour selected in vivo by fractionated irradiation of the parental radiosensitive tumour SCC61. MATERIALS AND

methodsRadioresistence of nu61 and SCC61 in vitro was measured by clonogenic assay. Apoptotic response of nu61 and SCC61 cells to genotoxic stress was examined using caspase-based apoptotic assays. Co-cultivation of carboxyfluorescein diacetate, succinimidyl ester (CFDE-SE)-labeled nu61 with un-labeled SCC61 was performed at 1:1 ratio. Production of interleukin-6, interleukin-8 and soluble receptor of interleukin 6 (IL6, IL8 and sIL6R) was measured using Enzyme-Linked Immunosorbent Assay (ELISA).

resultsRadioresistant nu61 was also resistant to interferon-gamma (IFNgamma) and the death ligands of tumour necrosis factor alpha receptor (TNFR) family when compared to SCC61. This combined resistance is due to an impaired apoptotic response in nu61. Relative to SCC61, nu61 produced more IL6, IL8 and sIL6R. Using Stat1 knock-downs we demonstrated that IL6 and IL8 production is Stat1-dependent. Treatment with neutralising antibodies to IL6 and IL8, but not to either cytokine alone sensitised nu61 to genotoxic stress induced apoptosis.

conclusionNu61, which over-expresses Stat1 pathway, is deficient in apoptotic response to ionising radiation and cytotoxic ligands. This resistance to apoptosis is associated with Stat1-dependent production of IL6 and IL8 and suppression of caspases 8, 9 and 3.

Indexed as

Radiation ToleranceSignal TransductionAnimalsApoptosisCaspasesCell Line, TumorCell SurvivalCoculture TechniquesCytokinesCytotoxinsDNA DamageGene Expression Regulation, NeoplasticHumansInterferon-gammaInterleukin-6Interleukin-8CaspasesCytokinesCytotoxinsInterferon-gammaInterleukin-6Interleukin-8InterleukinsReceptors, Tumor Necrosis FactorSTAT1 Transcription Factor

Identifiers

PMID19437244
PMCPMC2690884
OpenAlexW2017214930

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.