Evidence map›Paper›PMID 17215852›Full record

ArticleLeukemia2007

Multidrug resistance-associated protein 1 expression is under the control of the phosphoinositide 3 kinase/Akt signal transduction network in human acute myelogenous leukemia blasts.

P L Tazzari, A Cappellini, F Ricci, C Evangelisti, V Papa, T Grafone, G Martinelli, R Conte, L Cocco, J A McCubrey and 1 more

Abstract read
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In one paragraph

Article in Leukemia, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
6.6field-weighted citation impact, top 2% 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

82 citing papers in PubMed, 198 citations in OpenAlex.

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    Review
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22 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

11 authors at 5 institutions in 2 countries.

P L TazzariServizio di Immunoematologia e Trasfusionale, Policlinico S.Orsola-Malpighi, Bologna, Italy.
A Cappellini
F Ricci
C Evangelisti
V Papa
T Grafone
G Martinelli
R Conte
L Cocco
J A McCubrey
A M Martelli
University of Bologna · ITPoliclinico S.Orsola-Malpighi · ITEast Carolina University · USIstituto di Ematologia di Bologna · ITPromoFirenze · IT

Funding

PHS HHS R01098195
6 · The paper itself

Abstract

A high incidence of relapses following induction chemotherapy is a major hindrance to patient survival in acute myelogenous leukemia (AML). There is strong evidence that activation of the phosphoinositide 3 kinase (PI3K)/Akt signaling network plays a significant role in rendering AML blasts drug resistant. An important mechanism underlying drug resistance is represented by overexpression of membrane drug transporters such as multidrug resistance-associated protein 1 (MRP1) or 170-kDa P-glycoprotein (P-gp). Here, we present evidence that MRP1, but not P-gp, expression is under the control of the PI3K/Akt axis in AML blasts. We observed a highly significant correlation between levels of phosphorylated Akt and MRP1 expression in AML cells. Furthermore, incubation of AML blasts with wortmannin, a PI3K pharmacological inhibitor, resulted in lower levels of phosphorylated Akt, downregulated MRP1 expression, and decreased Rhodamine 123 extrusion in an in vitro functional dye efflux assay. We also demonstrate that wortmannin-dependent PI3K/Akt inhibition upregulated p53 protein levels in most AML cases, and this correlated with diminished MRP1 expression and enhanced phosphorylation of murine double minute 2 (MDM2). Taken together, these data suggest that PI3K/Akt activation may lead to the development of chemoresistance in AML blasts through a mechanism involving a p53-dependent suppression of MRP1 expression.

Indexed as

Acute DiseaseAdultAgedAged, 80 and overAndrostadienesATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily B, Member 1Bone NeoplasmsCell Line, TumorDrug Resistance, NeoplasmFemaleFluorescent DyesGene Expression Regulation, LeukemicGenes, p53HumansJurkat CellsAndrostadienesATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily B, Member 1Fluorescent DyesMDM2 protein, humanmultidrug resistance-associated protein 1Neoplasm ProteinsPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsProto-Oncogene Proteins c-aktProto-Oncogene Proteins c-mdm2Rhodamine 123Tumor Suppressor Protein p53Wortmannin

Identifiers

PMID17215852
OpenAlexW2048206336

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.