Article (Scientific journals)
Epilepsy associates with decreased HIF-1α/STAT5b signaling in glioblastoma
Berendsen, S.; Spliet, W. G. M.; Geurts, M. et al.
2019In Cancers, 11 (1)
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Keywords :
Epilepsy; Glioblastoma; GSEA; HIF-1α; Hypoxia; Mesenchymal transformation; STAT5b; Tissue microarrays; Translational research
Abstract :
[en] Epilepsy at presentation is an independent favorable prognostic factor in glioblastoma (GBM). In this study, we analyze the oncologic signaling pathways that associate with epilepsy in human GBMs, and that can underlie this prognostic effect. Following ethical approval and patient consent, fresh frozen GBM tissue was obtained from 76 patient surgeries. Hospital records were screened for the presence of seizures at presentation of the disease. mRNA and miRNA expression-based and gene set enrichment analyses were performed on these tissues, to uncover candidate oncologic pathways that associate with epilepsy. We performed qPCR experiments and immunohistochemistry on tissue microarrays containing 286 GBMs to further explore the association of these candidate pathways and of markers of mesenchymal transformation (NF-κB, CEBP-β, STAT3, STAT5b, VEGFA, SRF) with epilepsy. Gene sets involved in hypoxia/HIF-1α, STAT5, CEBP-β and epithelial-mesenchymal transformation signaling were significantly downregulated in epileptogenic GBMs. On confirmatory protein expression analyses, epileptogenic tumors were characterized by a significant downregulation of phospho-STAT5b, a target of HIF-1α. Epilepsy status did not associate with molecular subclassification or miRNA expression patterns of the tumors. Epileptogenic GBMs correlate with decreased hypoxia/ HIF-17alpha;/STAT5b signaling compared to glioblastomas that do not present with epilepsy. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Disciplines :
Genetics & genetic processes
Author, co-author :
Berendsen, S.;  Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Spliet, W. G. M.;  Department of Pathology, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Geurts, M.;  Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Van Hecke, W.;  Department of Pathology, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Seute, T.;  Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Snijders, T. J.;  Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center of Utrecht, Heidelberglaan 100, Utrecht, 3584 CX, Netherlands
Bours, Vincent ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Génétique humaine
Bell, E. H.;  Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center-Arthur G. James Cancer Hospital, The Ohio State University, West 10th Avenue, Columbus, OH 43210, United States
Chakravarti, A.;  Department of Radiation Oncology, The Ohio State University Comprehensive Cancer Center-Arthur G. James Cancer Hospital, The Ohio State University, West 10th Avenue, Columbus, OH 43210, United States
Robe, Pierre ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Language :
English
Title :
Epilepsy associates with decreased HIF-1α/STAT5b signaling in glioblastoma
Publication date :
2019
Journal title :
Cancers
eISSN :
2072-6694
Publisher :
MDPI AG
Volume :
11
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 February 2020

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