Evidence map›Paper›PMID 18400375›Full record

ArticleCancer letters2008

Priming with EGFR tyrosine kinase inhibitor and EGF sensitizes ovarian cancer cells to respond to chemotherapeutical drugs.

Cong Cao, Shan Lu, Alex Sowa, Rebecca Kivlin, Ashley Amaral, Wenming Chu, Hui Yang, Wen Di, Yinsheng Wan

Open access · greenAbstract read
In one paragraph

Article in Cancer letters, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
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  12. EGFR/HER-targeted therapeutics in ovarian cancer.Future medicinal chemistry · 2012
    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 3 institutions in 2 countries.

Cong CaoDepartment of Biology, Providence College, 549 River Avenue, Providence, RI 02918-0001, USA.
Shan Lu
Alex Sowa
Rebecca Kivlin
Ashley Amaral
Wenming Chu
Hui Yang
Wen Di
Yinsheng Wan
Providence College · USBrown University · USRenji Hospital · CN

Funding

UNDERGRADUATE RESEARCH AND SEMINARSP20RR016457 · NCRR · UNIVERSITY OF RHODE ISLAND · PI SHAKARIAN, ALISON M · 2001 to 2011
$35.5M
NCRR NIH HHS P20 RR016457
6 · The paper itself

Abstract

Over-expression of EGFR, as in most cases of ovarian cancer, is associated with advanced-stage disease and poor prognosis. Activation of EGFR signaling pathway is involved in increased cell proliferation, angiogenesis, metastasis and decreased apoptosis. Tyrosine kinase activity is essential for signal transduction and receptor down-regulation. However, we found in this study that tyrosine kinase activity is not necessary in ligand-induced EGFR down-regulation in ovarian cancer cell line CaOV3 cells. EGFR tyrosine kinase inhibitors, such as PD153035, AG1478, as well as non-specific tyrosine kinase inhibitor PP2 cannot reverse EGF-induced down-regulation of EGFR. These findings thus permit us to develop the following exciting but unconventional strategy to sensitize cancer cells, namely, by priming ovarian cancer cells with EGF and EGFR inhibitor PD153035, before chemotherapy. This priming procedure down-regulates EGFR without induction of mitogenic signals such as ERK and PI3K/AKT. EGF plus EGFR inhibitor-primed ovarian cancer cells display increased sensitivity to taxol-induced cell death, resistant to EGF-induced cell migration and cell proliferation as well as ERK and PI3K/AKT activation. Further studies showed that PD153035, which does not reverse ligand-induced EGFR down-regulation, blocks EGF-induced EGFR activation as well as EGFR's binding to c-cbl and Grb2. Taken together, we contend that priming with EGFR inhibitors plus EGF inhibits cell signaling pathways leading to cell proliferation and survival, while down-regulating EGFR. This priming approach sensitizes ovarian cancer cells and would ultimately result in better chemotherapeutical outcome.

Indexed as

AnimalsAntineoplastic AgentsCell Line, TumorCell MovementCell ProliferationDown-RegulationEpidermal Growth FactorErbB ReceptorsFemaleMiceOvarian NeoplasmsPaclitaxelProtein Kinase InhibitorsQuinazolinesSignal Transduction4-((3-bromophenyl)amino)-6,7-dimethoxyquinazolineAntineoplastic AgentsEpidermal Growth FactorErbB ReceptorsPaclitaxelProtein Kinase InhibitorsQuinazolines

Identifiers

PMID18400375
PMCPMC2519958
OpenAlexW2105511717

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.