Evidence map›Paper›PMID 12825816›Full record

ArticleJournal of neuro-oncology2003

Interaction of transforming growth factor-beta (TGF-beta) and epidermal growth factor (EGF) in human glioma cells.

Janka Held-Feindt, Björn Lütjohann, Hendrik Ungefroren, Hubertus M Mehdorn, Rolf Mentlein

Abstract read
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Article in Journal of neuro-oncology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. 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

5 authors.

Janka Held-FeindtDepartment of Neurosurgery, University of Kiel, Kiel, Germany. held-feindt@anat.uni-kiel.de
Björn Lütjohann
Hendrik Ungefroren
Hubertus M Mehdorn
Rolf Mentlein

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gliomas are characterized by a deregulation of growth factor production and growth factor receptors expression, e.g. overproduction of the cytokine transforming growth factor-beta (TGF-beta) and overexpression/constitutive activation of receptors for the epidermal growth factor (EGF). Potential interactions of such growth factors and their signaling cascades could enhance the malignancy of these tumors. Therefore, we investigated the effects of TGF-beta and EGF alone and in combination on the proliferation of glioma cells cultivated from eight solid human WHO grade IV gliomas and one glioma cell line, analyzed the expression and intactness of the TGF-beta-signaling molecules Samd-4 and -2, and the phosphorylation of the EGF-signaling kinases ERK 1/2. The effects were divergent and complex: Whereas EGF mostly stimulated glioma cell proliferation, TGF-beta either enhanced, inhibited or had no significant effect on proliferation. In combination, co-stimulation and inhibition of the EGF-induced mitogenic activity could be observed. Smad-4/-2 were expressed in all glioma cells, one point mutation at base 1595 in Smad-4 did not affect its protein sequence. In part of the glioma cells, reduced phosphorylation of ERK 1/2 and expression of cyclin-dependent kinase inhibitor 1 or p21 was observed in co-stimulation experiments. These experiments show that TGF-beta can inhibit EGF-mediated effects only in some gliomas, whereas it enhances it in others. The interaction of both factors is very complex and varies between different gliomas.

Indexed as

AstrocytomaBrain NeoplasmsCell Cycle ProteinsCell DivisionCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27CyclinsDNA PrimersEpidermal Growth FactorErbB ReceptorsHumansImmunoenzyme TechniquesKi-67 AntigenMAP Kinase Signaling SystemMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3CDKN1A protein, humanCell Cycle ProteinsCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27CyclinsDNA PrimersEpidermal Growth FactorErbB ReceptorsKi-67 AntigenMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Mitogen-Activated Protein KinasesTransforming Growth Factor betaTumor Suppressor Proteins

Identifiers

What OpenQuestion holds

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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.