Evidence map›Paper›PMID 17460778›Full record

ArticleNeoplasia (New York, N.Y.)2007

Oncogenic K-Ras signals through epidermal growth factor receptor and wild-type H-Ras to promote radiation survival in pancreatic and colorectal carcinoma cells.

Keith A Cengel, K Rahn Voong, Sanjay Chandrasekaran, Laurence Maggiorella, Thomas B Brunner, Eric Stanbridge, Gary D Kao, W Gillies McKenna, Eric J Bernhard

Open access · goldAbstract read
In one paragraph

Article in Neoplasia (New York, N.Y.), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

42 citing papers in PubMed, 88 citations in OpenAlex.

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  12. Ferroptosis: A Novel Anti-tumor Action for Cisplatin.Cancer research and treatment · 2018
    Article
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  15. The role of wild type RAS isoforms in cancer.Seminars in cell & developmental biology · 2016
    Review
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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

9 authors at 5 institutions in 4 countries.

Keith A CengelDepartment of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA. cengel@xrt.upenn.edu
K Rahn Voong
Sanjay Chandrasekaran
Laurence Maggiorella
Thomas B Brunner
Eric Stanbridge
Gary D Kao
W Gillies McKenna
Eric J Bernhard
University of Pennsylvania · USUniversity of Oxford · GBCentre Antoine Lacassagne · FRFriedrich-Alexander-Universität Erlangen-Nürnberg · DEUniversity of California, Irvine · US

Funding

ROLE OF ATAXIA TELANGIECTASIA IN CHECKPOINT CONTROLP01CA075138 · NCI · UNIVERSITY OF PENNSYLVANIA · PI HAHN, STEPHEN M · 1998 to 2007
$11.6M
TUMOR RADIOSENSITIZATION BY PRENYLTRANSFERASE INHIBITORSR01CA073820 · NCI · UNIVERSITY OF PENNSYLVANIA · PI BERNHARD, ERIC J · 1998 to 2008
$1.6M
Medical Research Council G0700730NCI NIH HHS P01 CA075138NCI NIH HHS P01 CA75138NCI NIH HHS R01 CA073820NCI NIH HHS R01 CA73820
6 · The paper itself

Abstract

Pancreatic and colorectal carcinomas frequently express oncogenic/mutant K-Ras that contributes to both tumorigenesis and clinically observed resistance to radiation treatment. We have previously shown that farnesyltransferase inhibitors (FTI) radiosensitize many pancreatic and colorectal cancer cell lines that express oncogenic K-ras at doses that inhibit the prenylation and activation of H-Ras but not K-Ras. In the present study, we have examined the mechanism of FTI-mediated radiosensitization in cell lines that express oncogenic K-Ras and found that wild-type H-Ras is a contributor to radiation survival in tumor cells that express oncogenic K-Ras. In these experiments, inhibiting the expression of oncogenic K-Ras, wild-type H-Ras, or epidermal growth factor receptor (EGFR) led to similar levels of radiosensitization as treatment with the FTI tipifarnib. Treatment with the EGFR inhibitor gefitinib led to similar levels of radiosensitization, and the combinations of tipifarnib or gefitinib plus inhibition of K-Ras, H-Ras, or EGFR expression did not provide additional radiosensitization compared with tipifarnib or gefitinib alone. Finally, supplementing culture medium with the EGFR ligand transforming growth factor alpha was able to reverse the radiosensitizing effect of inhibiting K-ras expression. Taken together, these findings suggest that EGFR-activated H-Ras signaling is initiated by oncogenic K-Ras to promote radiation survival in pancreatic and colorectal cancers.

Indexed as

Cell Line, TumorCell SurvivalColorectal NeoplasmsErbB ReceptorsGene Expression Regulation, NeoplasticGenes, rasHumansPancreatic NeoplasmsSignal TransductionErbB Receptors

Identifiers

PMID17460778
PMCPMC1854847
OpenAlexW2092798137

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.