Evidence map›Paper›PMID 22797067›Full record

ArticleOncogene2013

Gemcitabine triggers a pro-survival response in pancreatic cancer cells through activation of the MNK2/eIF4E pathway.

L Adesso, S Calabretta, F Barbagallo, G Capurso, E Pilozzi, R Geremia, G Delle Fave, C Sette

Registry-linked trialOpen access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04098081 (1911GCCC), which is not on this map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
4.7field-weighted citation impact, top 4% 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.

NCT04098081 phase2active not recruitingnot on this mapstarted 2019, after this paper: background citation

1911GCCC: Open Label, Phase 2 Trial of Galeterone Combined With Gemcitabine for Patients With Metastatic Pancreatic Adenocarcinoma Refractory to Standard Chemotherapy

TypeinterventionalSponsorUniversity of Maryland, BaltimoreRan2019 to 2026Enrolled15ConditionsAdvanced Pancreatic CancerArmsgaleterone, Gemcitabine
3 · Its place in the literature

Who cites it

83 citing papers in PubMed, 132 citations in OpenAlex.

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23 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

8 authors at 2 institutions in 1 country.

L AdessoDepartment of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
S Calabretta
F Barbagallo
G Capurso
E Pilozzi
R Geremia
G Delle Fave
C Sette
Sapienza University of Rome · ITUniversity of Rome Tor Vergata · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pancreatic ductal adenocarcinoma (PDAC) is an aggressive neoplastic disease. Gemcitabine, the currently used chemotherapeutic drug for PDAC, elicits only minor benefits, because of the development of escape pathways leading to chemoresistance. Herein, we aimed at investigating the involvement of the mitogen activating protein kinase interacting kinase (MNK)/eIF4E pathway in the acquired drug resistance of PDAC cells. Screening of a cohort of PDAC patients by immunohistochemistry showed that eIF4E phosphorylation correlated with disease grade, early onset of disease and worse prognosis. In PDAC cell lines, chemotherapeutic drugs induced MNK-dependent phosphorylation of eIF4E. Importantly, pharmacological inhibition of MNK activity synergistically enhanced the cytostatic effect of gemcitabine, by promoting apoptosis. RNA interference (RNAi) experiments indicated that MNK2 is mainly responsible for eIF4E phosphorylation and gemcitabine resistance in PDAC cells. Furthermore, we found that gemcitabine induced the expression of the oncogenic splicing factor SRSF1 and splicing of MNK2b, a splice variant that overrides upstream regulatory pathways and confers increased resistance to the drug. Silencing of SRSF1 by RNAi abolished this splicing event and recapitulated the effects of MNK pharmacological or genetic inhibition on eIF4E phosphorylation and apoptosis in gemcitabine-treated cells. Our results highlight a novel pro-survival pathway triggered by gemcitabine in PDAC cells, which leads to MNK2-dependent phosphorylation of eIF4E, suggesting that the MNK/eIF4E pathway represents an escape route utilized by PDAC cells to withstand chemotherapeutic treatments.

Indexed as

AdultAgedAged, 80 and overAntimetabolites, AntineoplasticApoptosisCarcinoma, Pancreatic DuctalCell Line, TumorCell SurvivalDeoxycytidineDrug Resistance, NeoplasmDrug SynergismEnzyme InhibitorsEukaryotic Initiation Factor-4EGemcitabineHumansIntracellular Signaling Peptides and ProteinsAntimetabolites, AntineoplasticDeoxycytidineEnzyme InhibitorsEukaryotic Initiation Factor-4EGemcitabineIntracellular Signaling Peptides and ProteinsIsoenzymesMKNK2 protein, humanNuclear ProteinsProtein Serine-Threonine KinasesRNA-Binding ProteinsSerine-Arginine Splicing Factors

Identifiers

PMID22797067
OpenAlexW2082834726

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.