Evidence map›Paper›PMID 22927971›Full record

ArticlePloS one2012

Expression of eukaryotic initiation factor 5A and hypusine forming enzymes in glioblastoma patient samples: implications for new targeted therapies.

Michael Preukschas, Christian Hagel, Alexander Schulte, Kristoffer Weber, Katrin Lamszus, Henning Sievert, Nora Pällmann, Carsten Bokemeyer, Joachim Hauber, Melanie Braig and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Pooled it
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  16. Functions and Regulation of Translation Elongation Factors.Frontiers in molecular biosciences · 2021
    Review
  17. Role of RONS and eIFs in Cancer Progression.Oxidative medicine and cellular longevity · 2021
    Review
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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

11 authors at 3 institutions in 1 country.

Michael PreukschasDepartment of Oncology, Haematology and Bone Marrow Transplantation with Section Pneumology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Christian Hagel
Alexander Schulte
Kristoffer Weber
Katrin Lamszus
Henning Sievert
Nora Pällmann
Carsten Bokemeyer
Joachim Hauber
Melanie Braig
Stefan Balabanov
Universität Hamburg · DEUniversity Medical Center Hamburg-Eppendorf · DELeibniz Institute of Virology (LIV) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glioblastomas are highly aggressive brain tumors of adults with poor clinical outcome. Despite a broad range of new and more specific treatment strategies, therapy of glioblastomas remains challenging and tumors relapse in all cases. Recent work demonstrated that the posttranslational hypusine modification of the eukaryotic initiation factor 5A (eIF-5A) is a crucial regulator of cell proliferation, differentiation and an important factor in tumor formation, progression and maintenance. Here we report that eIF-5A as well as the hypusine-forming enzymes deoxyhypusine synthase (DHS) and deoxyhypusine hydroxylase (DOHH) are highly overexpressed in glioblastoma patient samples. Importantly, targeting eIF-5A and its hypusine modification with GC7, a specific DHS-inhibitor, showed a strong antiproliferative effect in glioblastoma cell lines in vitro, while normal human astrocytes were not affected. Furthermore, we identified p53 dependent premature senescence, a permanent cell cycle arrest, as the primary outcome in U87-MG cells after treatment with GC7. Strikingly, combined treatment with clinically relevant alkylating agents and GC7 had an additive antiproliferative effect in glioblastoma cell lines. In addition, stable knockdown of eIF-5A and DHS by short hairpin RNA (shRNA) could mimic the antiproliferative effects of GC7. These findings suggest that pharmacological inhibition of eIF-5A may represent a novel concept to treat glioblastomas and may help to substantially improve the clinical course of this tumor entity.

Indexed as

Gene Expression Regulation, NeoplasticMolecular Targeted TherapyAdultAgedAged, 80 and overAntineoplastic Agents, AlkylatingApoptosisCarmustineCell CycleCell Line, TumorCell ProliferationCellular SenescenceDacarbazineEukaryotic Translation Initiation Factor 5AFemaleGene Knockdown TechniquesAntineoplastic Agents, AlkylatingCarmustineDacarbazinedeoxyhypusine hydroxylasedeoxyhypusine synthaseEukaryotic Translation Initiation Factor 5AGuaninehypusineLysineMixed Function OxygenasesN(1)-guanyl-1,7-diaminoheptaneOxidoreductases Acting on CH-NH Group DonorsPeptide Initiation FactorsRNA-Binding ProteinsTemozolomide

Identifiers

PMID22927971
PMCPMC3424167
OpenAlexW1989844355

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.