Article (Périodiques scientifiques)
The angiogenic switch leads to a metabolic shift in human glioblastoma.
Talasila, Krishna M; Røsland, Gro V; Hagland, Hanne R et al.
2017In Neuro-Oncology, 19 (3), p. 383-393
Peer reviewed vérifié par ORBi
 

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Mots-clés :
Transcription Factors; Animals; Brain Neoplasms/blood supply/genetics/metabolism/pathology; Cell Hypoxia; Gene Expression Profiling; Gene Expression Regulation, Neoplastic; Glioblastoma/blood supply/genetics/metabolism/pathology; Glycolysis; Humans; Neovascularization, Pathologic/genetics/metabolism/pathology; Rats; Rats, Nude; Transcription Factors/metabolism; Transcriptional Activation; Tumor Cells, Cultured; Xenograft Model Antitumor Assays; angiogenesis; glioblastoma; glycolysis; hypoxia; invasion
Résumé :
[en] BACKGROUND: Invasion and angiogenesis are major hallmarks of glioblastoma (GBM) growth. While invasive tumor cells grow adjacent to blood vessels in normal brain tissue, tumor cells within neovascularized regions exhibit hypoxic stress and promote angiogenesis. The distinct microenvironments likely differentially affect metabolic processes within the tumor cells. METHODS: In the present study, we analyzed gene expression and metabolic changes in a human GBM xenograft model that displayed invasive and angiogenic phenotypes. In addition, we used glioma patient biopsies to confirm the results from the xenograft model. RESULTS: We demonstrate that the angiogenic switch in our xenograft model is linked to a proneural-to-mesenchymal transition that is associated with upregulation of the transcription factors BHLHE40, CEBPB, and STAT3. Metabolic analyses revealed that angiogenic xenografts employed higher rates of glycolysis compared with invasive xenografts. Likewise, patient biopsies exhibited higher expression of the glycolytic enzyme lactate dehydrogenase A and glucose transporter 1 in hypoxic areas compared with the invasive edge and lower-grade tumors. Analysis of the mitochondrial respiratory chain showed reduction of complex I in angiogenic xenografts and hypoxic regions of GBM samples compared with invasive xenografts, nonhypoxic GBM regions, and lower-grade tumors. In vitro hypoxia experiments additionally revealed metabolic adaptation of invasive tumor cells, which increased lactate production under long-term hypoxia. CONCLUSIONS: The use of glycolysis versus mitochondrial respiration for energy production within human GBM tumors is highly dependent on the specific microenvironment. The metabolic adaptability of GBM cells highlights the difficulty of targeting one specific metabolic pathway for effective therapeutic intervention.
Disciplines :
Oncologie
Auteur, co-auteur :
Talasila, Krishna M;  Department of Biomedicine, University of Bergen, Norway. ; KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway.
Røsland, Gro V;  Department of Biomedicine, University of Bergen, Norway.
Hagland, Hanne R;  Department of Biomedicine, University of Bergen, Norway.
Eskilsson, Eskil;  The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Flønes, Irene H;  Department of Neurology, Haukeland University Hospital, Bergen, Norway.
FRITAH, Sabrina ;  NorLux Neuro-oncology Laboratory, Luxembourg Institute of Health, Luxembourg.
AZUAJE, Francisco ;  NorLux Neuro-oncology Laboratory, Luxembourg Institute of Health, Luxembourg.
Atai, Nadia;  Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, The Netherlands.
Harter, Patrick N;  Institute of Neurology (Edinger Institute), Goethe University, Frankfurt, Germany, German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany.
MITTELBRONN, Michel ;  Institute of Neurology (Edinger Institute), Goethe University, Frankfurt, Germany, German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany.
Andersen, Michael;  Department of Pathology, Haukeland University Hospital, Bergen, Norway.
Joseph, Justin V;  Department of Biomedicine, University of Bergen, Norway. ; KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway.
Hossain, Jubayer Al;  Department of Biomedicine, University of Bergen, Norway. ; KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway. ; Department of Pathology, Haukeland University Hospital, Bergen, Norway.
Vallar, Laurent;  Department of Oncology, Luxembourg Institute of Health, Luxembourg.
Noorden, Cornelis J F van;  Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, The Netherlands.
NICLOU, Simone P. ;  KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway. ; NorLux Neuro-oncology Laboratory, Luxembourg Institute of Health, Luxembourg.
Thorsen, Frits;  KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway. ; Molecular Imaging Center, Department of Biomedicine, University of Bergen, Norway.
Tronstad, Karl Johan;  Department of Biomedicine, University of Bergen, Norway.
Tzoulis, Charalampos;  Department of Neurology, Haukeland University Hospital, Bergen, Norway.
Bjerkvig, Rolf;  Department of Biomedicine, University of Bergen, Norway. ; KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway. ; Department of Neurology, Haukeland University Hospital, Bergen, Norway.
Miletic, Hrvoje;  Department of Biomedicine, University of Bergen, Norway. ; KG Jebsen Brain Tumor Research Centre, University of Bergen, Norway. ; Department of Pathology, Haukeland University Hospital, Bergen, Norway.
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Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
The angiogenic switch leads to a metabolic shift in human glioblastoma.
Date de publication/diffusion :
01 mars 2017
Titre du périodique :
Neuro-Oncology
ISSN :
1522-8517
eISSN :
1523-5866
Maison d'édition :
Oxford University Press
Volume/Tome :
19
Fascicule/Saison :
3
Pagination :
383-393
Peer reviewed :
Peer reviewed vérifié par ORBi
Commentaire :
© The Author(s) 2017. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com
Disponible sur ORBilu :
depuis le 27 février 2024

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