Evidence map›Paper›PMID 9576951›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

Drug resistance of human glioblastoma cells conferred by a tumor-specific mutant epidermal growth factor receptor through modulation of Bcl-XL and caspase-3-like proteases.

M Nagane, A Levitzki, A Gazit, W K Cavenee, H J Huang

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 136 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
136citing papers in PubMed, 1 pooled it
5.8field-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

136 citing papers in PubMed, 1 synthesis or guideline pooled it, 352 citations in OpenAlex.

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  8. Targeting drug resistance in glioblastoma (Review).International journal of oncology · 2024
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76 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 2 countries.

M NaganeLudwig Institute for Cancer Research, University of California at San Diego, La Jolla, CA 92093-0660, USA.
A Levitzki
A Gazit
W K Cavenee
H J Huang
Hebrew University of Jerusalem · ILLudwig Cancer Research · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alterations of the epidermal growth factor receptor (EGFR) gene occur frequently in human malignant gliomas. The most common of these is deletion of exons 2-7, resulting in truncation of the extracellular domain (DeltaEGFR or EGFRvIII), which occurs in a large fraction of de novo malignant gliomas (but not in progressive tumors or those lacking p53 function) and enhances tumorigenicity, in part by decreasing apoptosis through up-regulation of Bcl-XL. Here, we demonstrate that the DeltaEGFR concomitantly confers resistance to the chemotherapeutic drug cisplatin (CDDP) by suppression of CDDP-induced apoptosis. Expression of Bcl-XL was elevated in U87MG.DeltaEGFR cells prior to and during CDDP treatment, whereas it decreased considerably in CDDP-treated parental cells. CDDP-induced activation of caspase-3-like proteases was suppressed significantly in U87MG.DeltaEGFR cells. These responses were highly specific to constitutively kinase-active DeltaEGFR, because overexpression of kinase-deficient DeltaEGFR (DK) or wild-type EGFR had no such effects. Correspondingly, DeltaEGFR specific tyrosine kinase inhibitors reduced Bcl-XL expression and potentiated CDDP-induced apoptosis in U87MG.DeltaEGFR cells. Ectopic overexpression of Bcl-XL in parental U87MG cells also resulted in suppression of both caspase activation and apoptosis induced by CDDP. These results may have important clinical implications for the use of CDDP in the treatment of those malignant gliomas expressing DeltaEGFR.

Indexed as

CaspasesTyrphostinsAntineoplastic AgentsApoptosisbcl-X ProteinCaspase 3CisplatinCysteine EndopeptidasesDrug Resistance, NeoplasmEnzyme ActivationEnzyme InhibitorsEnzyme PrecursorsErbB ReceptorsGlioblastomaHumansNitrilesAntineoplastic AgentsBCL2L1 protein, humanbcl-X ProteinCASP3 protein, humanCaspase 3CaspasesCisplatinCysteine EndopeptidasesEnzyme InhibitorsEnzyme PrecursorsErbB ReceptorsNitrilesProtein-Tyrosine KinasesProto-Oncogene Proteins c-bcl-2QuinazolinesRTKI cpdTyrphostins

Identifiers

PMID9576951
PMCPMC20446
OpenAlexW2023563217

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.