Evidence map›Paper›PMID 21660955›Full record

ArticleJournal of cellular physiology2011

Lipid raft localization of EGFR alters the response of cancer cells to the EGFR tyrosine kinase inhibitor gefitinib.

Mary E Irwin, Kelly L Mueller, Natacha Bohin, Yubin Ge, Julie L Boerner

Abstract read
In one paragraph

Article in Journal of cellular physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

106 citing papers in PubMed, 177 citations in OpenAlex.

  1. Review
  2. Protein-enhanced small molecule disruptors of ordered membrane domains.Proceedings of the National Academy of Sciences of the United States of America · 2026
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46 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.

Mary E IrwinDepartment of Pharmacology, Wayne State University, Detroit, Michigan, USA.
Kelly L Mueller
Natacha Bohin
Yubin Ge
Julie L Boerner
Wayne State University · USThe Barbara Ann Karmanos Cancer Institute · US

Funding

Tumor Biology and Microenvironment (Program 1)P30CA022453 · NCI · WAYNE STATE UNIVERSITY · PI PAUL M STEMMER · 1985 to 2026
$68.4M
CORE 6 : PROJECT LEADERSHIP AND ADMINISTRATIONU54RR020843 · NCRR · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI SMITH, JEFFREY W · 2004 to 2009
$19.1M
RESEARCH CORE-- SIGNAL TRANSDUCTIONP30ES006639 · NIEHS · WAYNE STATE UNIVERSITY · PI DERESKI, MARY O · 1994 to 2008
$13.1M
TRAINING PROGRAM IN THE BIOLOGY OF CANCERT32CA009531 · NCI · WAYNE STATE UNIVERSITY · PI Larry H Matherly · 1985 to 2026
$5.3M
NCI NIH HHS P30 CA022453NCI NIH HHS T32 CA009531NCI NIH HHS T32-CA009531NCRR NIH HHS U54 RR020843NIEHS NIH HHS P30 ES006639PHS HHS KG081416
6 · The paper itself

Abstract

Epidermal growth factor receptor (EGFR) is overexpressed in many cancer types including ~30% of breast cancers. Several small molecule tyrosine kinase inhibitors (TKIs) targeting EGFR have shown clinical efficacy in lung and colon cancers, but no benefit has been noted in breast cancer. Thirteen EGFR expressing breast cancer cell lines were analyzed for response to EGFR TKIs. Seven were found to be EGFR TKI resistant; while shRNA knockdown of EGFR determined that four of these cell lines retained the requirement of EGFR protein expression for growth. Interestingly, EGFR localized to plasma membrane lipid rafts in all four of these EGFR TKI-resistant cell lines, as determined by biochemical raft isolation and immunofluorescence. When lipid rafts were depleted of cholesterol using lovastatin, all four cell lines were sensitized to EGFR TKIs. In fact, the effects of the cholesterol biosynthesis inhibitors and gefitinib were synergistic. While gefitinib effectively abrogated phosphorylation of Akt- and mitogen-activated protein kinase in an EGFR TKI-sensitive cell line, phosphorylation of Akt persisted in two EGFR TKI-resistant cell lines, however, this phosphorylation was abrogated by lovastatin treatment. Thus, we have shown that lipid raft localization of EGFR correlates with resistance to EGFR TKI-induced growth inhibition and pharmacological depletion of cholesterol from lipid rafts decreases this resistance in breast cancer cell lines. Furthermore, we have presented evidence to suggest that when EGFR localizes to lipid rafts, these rafts provide a platform to facilitate activation of Akt signaling in the absence of EGFR kinase activity.

Indexed as

AtorvastatinBenzylaminesbeta-CyclodextrinsBreast NeoplasmsCell Line, TumorCell ProliferationCell SurvivalCholesterolDrug Resistance, NeoplasmDrug Screening Assays, AntitumorDrug SynergismErbB ReceptorsFemaleGefitinibHeptanoic AcidsHumansAtorvastatinBenzylaminesbeta-CyclodextrinsbetadexCholesterolErbB ReceptorsGefitinibHeptanoic AcidsLovastatinNB 598Protein Kinase InhibitorsProto-Oncogene Proteins c-aktPyrrolesQuinazolinesThiophenes

Identifiers

PMID21660955
PMCPMC3103760
OpenAlexW2052988773

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.