Evidence map›Paper›PMID 16007122›Full record

ArticleOncogene2005

PI3K-AKT pathway negatively controls EGFR-dependent DNA-binding activity of Stat3 in glioblastoma multiforme cells.

Mrinal K Ghosh, Pankaj Sharma, Phyllis C Harbor, Shaik O Rahaman, S Jaharul Haque

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

36 citing papers in PubMed, 56 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Mrinal K GhoshDepartment of Cancer Biology, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA.
Pankaj Sharma
Phyllis C Harbor
Shaik O Rahaman
S Jaharul Haque
Cleveland Clinic · US

Funding

Cytokine Signaling in Glioblastoma CellsR01CA095006 · NCI · CLEVELAND CLINIC LERNER COM-CWRU · PI HAQUE, SAIKH JAHARUL · 2003 to 2007
$1.7M
NEGATIVE REGULATION OF INTERLEUKIN-4 SIGNALINGR01GM060533 · NIGMS · CLEVELAND CLINIC LERNER COL/MED-CWRU · PI HAQUE, SAIKH JAHARUL · 2000 to 2004
$957k
NCI NIH HHS R01-CA095006NIGMS NIH HHS R01-GM60533
6 · The paper itself

Abstract

Glioblastoma multiforme (GBM) cells frequently harbor amplification and/or gain-of-function mutation of the EGFR gene leading to the activation of multiple signaling pathways. Blockade of EGFR activation inhibited the activation of both AKT and Stat3 in U87 and D54 GBM cells and induced spontaneous apoptosis, which were associated with reduction in the steady-state level of Mcl-1. Surprisingly, inhibition of PI3 kinase (PI3K) activity, which in turn inhibited AKT activation, significantly increased the DNA-binding activity of Stat3 in U87 and D54 cells. This was not due to an increase in the level of tyrosine-phosphorylated Stat3. Conversely, ectopic expression of constitutively activated AKT significantly decreased the DNA-binding activity of Stat3 in 293T cells. Interestingly, blockade of protein phosphatase 2A activity in GBM or 293T cells by calyculin A, which activated AKT, stabilized the phosphorylation of multiple Ser/Thr residues that were located in the transactivation domain (TAD) of Stat3 and this in turn completely ablated the DNA-binding activity of Stat3. Collectively, these results suggest that both Stat3 and AKT provide survival signals in U87 and D54 cells, and Ser/Thr phosphorylation of Stat3-TAD by the PI3K-AKT pathway negatively controls the DNA-binding function of Stat3.

Indexed as

Signal TransductionApoptosisBlotting, WesternCells, CulturedChromatin ImmunoprecipitationDNAElectrophoretic Mobility Shift AssayEnzyme ActivationErbB ReceptorsGene Expression Regulation, NeoplasticGlioblastomaHumansImmunoprecipitationInterleukin-6KidneyMutagenesis, Site-DirectedDNAErbB ReceptorsInterleukin-6Myeloid Cell Leukemia Sequence 1 ProteinNeoplasm ProteinsPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsPhosphoprotein PhosphatasesProtein Phosphatase 2Proto-Oncogene Proteins c-aktProto-Oncogene Proteins c-bcl-2STAT3 protein, humanSTAT3 Transcription FactorTyrosine

Identifiers

PMID16007122
OpenAlexW2029388676

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.