Evidence map›Paper›PMID 25361208›Full record

ArticleInternational journal of molecular sciences2014

Betulinic acid derivatives NVX-207 and B10 for treatment of glioblastoma--an in vitro study of cytotoxicity and radiosensitization.

Matthias Bache, Stephan Bernhardt, Sarina Passin, Henri Wichmann, Anja Hein, Martin Zschornak, Matthias Kappler, Helge Taubert, Reinhard Paschke, Dirk Vordermark

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 36 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

10 authors at 3 institutions in 1 country.

Matthias BacheDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. matthias.bache@medizin.uni-halle.de.
Stephan BernhardtDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. s.bernhardt@dkfz-heidelberg.de.
Sarina PassinDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. Sarina.Passin@web.de.
Henri WichmannDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. wichmann.henri@medizin.uni-halle.de.
Anja HeinDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. anjahn@hein-reica.de.
Martin ZschornakDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. mc_scop@gmx.net.
Matthias KapplerDepartment of Oral and Maxillofacial Plastic Surgery, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. matthias.kappler@medizin.uni-halle.de.
Helge TaubertClinic of Urology, Friedrich Alexander University Hospital Erlangen, Hartmann Str. 14, D-91054 Erlangen, Germany. Helge.Taubert@uk-erlangen.de.
Reinhard PaschkeBiozentrum, Martin Luther Universität Halle-Wittenberg, Weinbergweg 22, D-06120 Halle, Germany. reinhard.paschke@biozentrum.uni-halle.de.
Dirk VordermarkDepartment of Radiotherapy, Martin Luther University Halle-Wittenberg, Ernst Grube Straße 40, D-06120 Halle, Germany. dirk.vordermark@medizin.uni-halle.de.
Martin Luther University Halle-Wittenberg · DEFriedrich-Alexander-Universität Erlangen-Nürnberg · DEGerman Cancer Research Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Betulinic acid (BA), a pentacyclic triterpene, represents a new therapeutic substance that has potential benefits for treating glioblastoma. Recently, new strategies for producing BA derivatives with improved properties have evolved. However, few studies have examined the combination of BA or BA derivatives using radiotherapy. The effects of two BA derivatives, NVX-207 and B10, on cellular and radiobiological behavior were analyzed using glioblastoma cell lines (U251MG, U343MG and LN229). Based on IC50 values under normoxic conditions, we detected a 1.3-2.9-fold higher cytotoxicity of the BA derivatives B10 and NVX-207, respectively, compared to BA. Incubation using both BA derivatives led to decreased cell migration, cleavage of PARP and decreased protein expression levels of Survivin. Weak radiation sensitivity enhancement was observed in U251MG cells after treatment with both BA derivatives. The enhancement factors at an irradiation dose of 6 Gy after treatment with 5 µM NVX-207 and 5 µM B10 were 1.32 (p=0.029) and 1.55 (p=0.002), respectively. In contrast to BA, neither NVX-207 nor B10 had additional effects under hypoxic conditions. Our results suggest that the BA derivatives NVX-207 and B10 improve the effects of radiotherapy on human malignant glioma cells, particularly under normoxic conditions.

Indexed as

Antineoplastic Agents, PhytogenicBetulinic AcidBrain NeoplasmsCell Line, TumorCell MovementCell SurvivalGlioblastomaGlucosidesHumansInhibitor of Apoptosis ProteinsPentacyclic TriterpenesPoly(ADP-ribose) PolymerasesPropanolaminesRadiation, IonizingSurvivinTriterpenes28-O-acetylbetulin-3-ylglucopyranoside2-amino-3-hydroxy-2-hydroxymethylpropyl 3-acetylbetulinoateAntineoplastic Agents, PhytogenicBetulinic AcidBIRC5 protein, humanGlucosidesInhibitor of Apoptosis ProteinsPentacyclic TriterpenesPoly(ADP-ribose) PolymerasesPropanolaminesSurvivinTriterpenes

Identifiers

PMID25361208
PMCPMC4264138
OpenAlexW1999000699

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.