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Skaga E, Trewin-Nybråten CB, Niehusmann P, Johannesen TB, Marienhagen K, Oltedal L, Schipman S, Skjulsvik AJ, Solheim O, Solheim TS, Sundstrøm T, Vik-Mo EO, Petter Brandal, Ingebrigtsen T. Stable glioma incidence and increased patient survival over the past two decades in Norway: a nationwide registry-based cohort study. Acta Oncol 2024; 63:83-94. [PMID: 38501768 DOI: 10.2340/1651-226x.2024.24970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/08/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Surveillance of incidence and survival of central nervous system tumors is essential to monitor disease burden and epidemiological changes, and to allocate health care resources. Here, we describe glioma incidence and survival trends by histopathology group, age, and sex in the Norwegian population. MATERIAL AND METHODS We included patients with a histologically verified glioma reported to the Cancer Registry of Norway from 2002 to 2021 (N = 7,048). Population size and expected mortality were obtained from Statistics Norway. Cases were followed from diagnosis until death, emigration, or 31 December 2022, whichever came first. We calculated age-standardized incidence rates (ASIR) per 100,000 person-years and age-standardized relative survival (RS). Results: The ASIR for histologically verified gliomas was 7.4 (95% CI: 7.3-7.6) and was higher for males (8.8; 95% CI: 8.5-9.1) than females (6.1; 95% CI: 5.9-6.4). Overall incidence was stable over time. Glioblastoma was the most frequent tumor entity (ASIR = 4.2; 95% CI: 4.1-4.4). Overall, glioma patients had a 1-year RS of 63.6% (95% CI: 62.5-64.8%), and a 5-year RS of 32.8% (95% CI: 31.6-33.9%). Females had slightly better survival than males. For most entities, 1- and 5-year RS improved over time (5-year RS for all gliomas 29.0% (2006) and 33.1% (2021), p < 0.001). Across all tumor types, the RS declined with increasing age at diagnosis. INTERPRETATION The incidence of gliomas has been stable while patient survival has increased over the past 20 years in Norway. As gliomas represent a heterogeneous group of primary CNS tumors, regular reporting from cancer registries at the histopathology group level is important to monitor disease burden and allocate health care resources in a population.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Laboratory for Neurosurgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway; Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, USA.
| | - Cassia B Trewin-Nybråten
- Department of Registration, Cancer Registry of Norway, Norwegian Institute of Public Health, Oslo, Norway
| | - Pitt Niehusmann
- Department of Pathology, Oslo University Hospital, Oslo, Norway
| | - Tom Børge Johannesen
- Department of Registration, Cancer Registry of Norway, Norwegian Institute of Public Health, Oslo, Norway
| | | | - Leif Oltedal
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Stephanie Schipman
- Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway; Medical Faculty, University Hospital Muenster, Germany
| | - Anne Jarstein Skjulsvik
- Department of Pathology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ole Solheim
- Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway; Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Tora Skeidsvoll Solheim
- Cancer Clinic, St. Olavs University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Terje Sundstrøm
- Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway; Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Petter Brandal
- Department of Oncology, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway; Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | - Tor Ingebrigtsen
- Department of Clinical Medicine, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway; Department of Neurosurgery, Otorhinolaryngology and Ophthalmology, University Hospital of North Norway, Tromsø, Norway
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Brynjulvsen M, Solli E, Walewska M, Zucknick M, Djirackor L, Langmoen IA, Mughal AA, Skaga E, Vik-Mo EO, Sandberg CJ. Functional and Molecular Heterogeneity in Glioma Stem Cells Derived from Multiregional Sampling. Cancers (Basel) 2023; 15:5826. [PMID: 38136371 PMCID: PMC10741477 DOI: 10.3390/cancers15245826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Glioblastoma (GBM) is an aggressive and highly heterogeneous primary brain tumor. Glioma stem cells represent a subpopulation of tumor cells with stem cell traits that are presumed to be the cause of tumor relapse. There exists complex tumor heterogeneity in drug sensitivity patterns between glioma stem cell (GSC) cultures derived from different patients. Here, we describe that heterogeneity also exists between GSC cultures derived from multiple biopsies within a single tumor. From biopsies harvested within spatially distinct regions representing the entire tumor mass, we established seven GSC cultures and compared their stem cell properties, mutations, gene expression profiles, and drug sensitivity patterns against 115 different anticancer drugs. The results were compared to 14 GSC cultures derived from other patients. Between the multiregional-derived GSC cultures, we observed only minor differences in their phenotype, proliferative capacity, and global gene expression. Further, they displayed intratumoral heterogeneity in mutational profiles and sensitivity patterns to anticancer drugs. This heterogeneity, however, did not exceed the extensive heterogeneity found between GSC cultures derived from other GBM patients. Our results suggest that the use of GSC cultures from one single focal biopsy may underestimate the overall complexity of the GSC population and display the importance of including GSC cultures reflecting the entire tumor mass in drug screening strategies.
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Affiliation(s)
- Marit Brynjulvsen
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Blindern, P.O. Box 1112, 0317 Oslo, Norway
| | - Elise Solli
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
| | - Maria Walewska
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
| | - Manuela Zucknick
- Department of Biostatistics, Oslo Centre for Biostatistics and Epidemiology, University of Oslo, Blindern, P.O. Box 1122, 0317 Oslo, Norway
| | - Luna Djirackor
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
| | - Iver A. Langmoen
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Blindern, P.O. Box 1112, 0317 Oslo, Norway
| | - Awais Ahmad Mughal
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
| | - Erlend Skaga
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
| | - Einar O. Vik-Mo
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Blindern, P.O. Box 1112, 0317 Oslo, Norway
| | - Cecilie J. Sandberg
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Nydalen, P.O. Box 4950, 0424 Oslo, Norway
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Mendoza Mireles EE, Skaga E, Server A, Leske H, Brandal P, Helseth E, Rønning PA, Vik-Mo EO. The benefit of complete resection of contrast enhancing tumor in glioblastoma patients: A population-based study. Neurooncol Pract 2023; 10:555-564. [PMID: 38026582 PMCID: PMC10666813 DOI: 10.1093/nop/npad037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
Background New treatment modalities have not been widely adopted for patients with glioblastoma (GBM) after the addition of temozolomide to radiotherapy. We hypothesize that increased extent of resection (EOR) has resulted in improved survival for surgically treated patients with glioblastoma at the population level. Methods Retrospective analysis of adult patients operated for glioblastoma in the population of South-Eastern Norway. Patients were stratified into Pre-temozolomide- (2003-2005), temozolomide- (2006-2012), and resection-focused period (2013-2019) and evaluated according to age and EOR. Results The study included 1657 adult patients operated on for supratentorial glioblastoma. The incidence of histologically confirmed glioblastoma increased from 3.7 in 2003 to 5.3 per 100 000 in 2019. The median survival was 11.4 months. Complete resection of contrast-enhancing tumor (CRCET) was achieved in 386 patients, and this fraction increased from 13% to 32% across the periods. Significant improvement in median survival was found between the first 2 periods and the last (10.5 and 10.6 vs. 12.3 months; P < .01), with a significant increase in 3- and 5-year survival probability to 12% and 6% (P < .01). Patients with CRCET survived longer than patients with non-CRCET (16.1 vs. 10.8 months; P < .001). The median survival doubled in patients ≥70 years and (12.1 months). Survival was similar between the time periods in patients where CRCET was achieved. Conclusions We demonstrate an improved survival of GBM patients at the population level associated with an increased fraction of patients with CRCET. The data support the importance of CRCET to improve glioblastoma patient outcomes.
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Affiliation(s)
- Eduardo Erasmo Mendoza Mireles
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Vilhelm Magnus Laboratory, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway
| | - Erlend Skaga
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Vilhelm Magnus Laboratory, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway
| | - Andres Server
- Department of Radiology, Oslo University Hospital, Oslo, Norway
| | - Henning Leske
- Department of Pathology, Oslo University Hospital, Oslo, Norway
| | - Petter Brandal
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Eirik Helseth
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Pål A Rønning
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Einar O Vik-Mo
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Vilhelm Magnus Laboratory, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Heggebø LC, Borgen IMH, Rylander H, Kiserud C, Nordenmark TH, Hellebust TP, Evensen ME, Gustavsson M, Ramberg C, Sprauten M, Magelssen H, Blakstad H, Moorthy J, Andersson K, Raunert I, Henry T, Moe C, Granlund C, Goplen D, Brekke J, Johannessen TCA, Solheim TS, Marienhagen K, Humberset Ø, Bergström P, Agrup M, Dahl L, Gubanski M, Gojon H, Brahme CJ, Rydén I, Jakola AS, Vik-Mo EO, Lie HC, Asphaug L, Hervani M, Kristensen I, Rueegg CS, Olsen IC, Ledal RJ, Degsell E, Werlenius K, Blomstrand M, Brandal P. Investigating survival, quality of life and cognition in PROton versus photon therapy for IDH-mutated diffuse grade 2 and 3 GLIOmas (PRO-GLIO): a randomised controlled trial in Norway and Sweden. BMJ Open 2023; 13:e070071. [PMID: 36940951 PMCID: PMC10030923 DOI: 10.1136/bmjopen-2022-070071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/22/2023] Open
Abstract
INTRODUCTION The use of proton therapy increases globally despite a lack of randomised controlled trials demonstrating its efficacy and safety. Proton therapy enables sparing of non-neoplastic tissue from radiation. This is principally beneficial and holds promise of reduced long-term side effects. However, the sparing of seemingly non-cancerous tissue is not necessarily positive for isocitrate dehydrogenase (IDH)-mutated diffuse gliomas grade 2-3, which have a diffuse growth pattern. With their relatively good prognosis, yet incurable nature, therapy needs to be delicately balanced to achieve a maximal survival benefit combined with an optimised quality of life. METHODS AND ANALYSIS PRO-GLIO (PROton versus photon therapy in IDH-mutated diffuse grade 2 and 3 GLIOmas) is an open-label, multicentre, randomised phase III non-inferiority study. 224 patients aged 18-65 years with IDH-mutated diffuse gliomas grade 2-3 from Norway and Sweden will be randomised 1:1 to radiotherapy delivered with protons (experimental arm) or photons (standard arm). First intervention-free survival at 2 years is the primary endpoint. Key secondary endpoints are fatigue and cognitive impairment, both at 2 years. Additional secondary outcomes include several survival measures, health-related quality of life parameters and health economy endpoints. ETHICS AND DISSEMINATION To implement proton therapy as part of standard of care for patients with IDH-mutated diffuse gliomas grade 2-3, it should be deemed safe. With its randomised controlled design testing proton versus photon therapy, PRO-GLIO will provide important information for this patient population concerning safety, cognition, fatigue and other quality of life parameters. As proton therapy is considerably more costly than its photon counterpart, cost-effectiveness will also be evaluated. PRO-GLIO is approved by ethical committees in Norway (Regional Committee for Medical & Health Research Ethics) and Sweden (The Swedish Ethical Review Authority) and patient inclusion has commenced. Trial results will be published in international peer-reviewed journals, relevant conferences, national and international meetings and expert forums. TRIAL REGISTRATION NUMBER ClinicalTrials.gov Registry (NCT05190172).
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Affiliation(s)
- Liv Cathrine Heggebø
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ida Maria Henriksen Borgen
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
| | | | - Cecilie Kiserud
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Tonje Haug Nordenmark
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
- Department of Psychology, Faculty of Social Sciences, University of Oslo, Oslo, Norway
| | - Taran Paulsen Hellebust
- Department of Medical Physics, Oslo University Hospital, Oslo, Norway
- Department of Physics, University of Oslo, Oslo, Norway
| | - Morten Egeberg Evensen
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Section of Oncology, Drammen Hospital, Drammen, Norway
| | - Magnus Gustavsson
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Medical Radiation Science, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
| | - Christina Ramberg
- Department of Medical Physics, Oslo University Hospital, Oslo, Norway
| | - Mette Sprauten
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | | | - Hanne Blakstad
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Janani Moorthy
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | | | - Ingela Raunert
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Thomas Henry
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Medical Radiation Science, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden
| | - Cecilie Moe
- Department of Research Support for Clinical Trials, Oslo University Hospital, Oslo, Norway
| | - Carin Granlund
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Dorota Goplen
- Department of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway
| | - Jorunn Brekke
- Department of Oncology and Medical Physics, Haukeland University Hospital, Bergen, Norway
| | | | - Tora Skeidsvoll Solheim
- Cancer Clinic, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - Øyvind Humberset
- Department of Oncology, University Hospital of North Norway, Tromso, Norway
| | - Per Bergström
- Department of Oncology, University Hospital of Umeå, Umeå, Sweden
| | - Måns Agrup
- Department of Oncology, Linköping University Hospital, Linköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Ludvig Dahl
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Michael Gubanski
- Department of Radiotherapy, Karolinska University Hospital, Stockholm, Sweden
| | - Helene Gojon
- Department of Radiotherapy, Karolinska University Hospital, Stockholm, Sweden
| | | | - Isabelle Rydén
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
| | - Asgeir S Jakola
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
- Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Einar O Vik-Mo
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Hanne C Lie
- Department of Behavioural Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Lars Asphaug
- Department of Research Support for Clinical Trials, Oslo University Hospital, Oslo, Norway
| | - Maziar Hervani
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Ingrid Kristensen
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Corina Silvia Rueegg
- Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital, Oslo, Norway
| | - Inge C Olsen
- Department of Research Support for Clinical Trials, Oslo University Hospital, Oslo, Norway
| | | | | | - Katja Werlenius
- Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Oncology, Institute of Clinical Sciences, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
| | - Malin Blomstrand
- Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Oncology, Institute of Clinical Sciences, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
| | - Petter Brandal
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
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Svensson SF, Halldórsson S, Latysheva A, Fuster-Garcia E, Hjørnevik T, Fraser-Green J, Bugge RAB, Grinband J, Holm S, Sinkus R, Vik-Mo EO, Emblem KE. MR Elastography Identifies Regions of Extracellular Matrix Reorganization Associated with Shorter Survival in Glioblastoma Patients. Neurooncol Adv 2023; 5:vdad021. [PMID: 37066109 PMCID: PMC10102831 DOI: 10.1093/noajnl/vdad021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Abstract
Background
Biomechanical tissue properties of glioblastoma tumors are heterogeneous, but the molecular mechanisms involved and the biological implications are poorly understood. Here, we combine magnetic resonance elastography (MRE) measurement of tissue stiffness with RNA sequencing of tissue biopsies to explore the molecular characteristics of the stiffness signal.
Methods
MRE was performed preoperatively in 13 patients with glioblastoma. Navigated biopsies were harvested during surgery and classified as ‘stiff’ or ‘soft’ according to MRE stiffness measurements (|G*|norm). Twenty-two biopsies from eight patients were analysed by RNA sequencing.
Results
The mean whole-tumor stiffness was lower than normal-appearing white matter. The surgeon’s stiffness evaluation did not correlate with the MRE measurements, which suggests that these measures assess different physiological properties. Pathway analysis of the differentially expressed genes between ‘stiff’ and ‘soft’ biopsies showed that genes involved in extracellular matrix reorganization and cellular adhesion were overexpressed in ‘stiff’ biopsies. Supervised dimensionality reduction identified a gene expression signal separating ‘stiff ‘and ‘soft’ biopsies. Using the NIH Genomic Data Portal, 265 glioblastoma patients were divided into those with (n=63) and without (n=202) this gene expression signal. The median survival time of patients with tumors expressing the gene signal associated with ‘stiff’ biopsies was 100 days shorter than that of patients not expressing it (360 versus 460 days, hazard ratio: 1.45, P<0.05).
Conclusion
MRE imaging of glioblastoma can provide non-invasive information on intratumoral heterogeneity. Regions of increased stiffness were associated with extracellular matrix reorganization. An expression signal associated with ‘stiff’ biopsies correlated with shorter survival of glioblastoma patients.
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Affiliation(s)
- Siri Fløgstad Svensson
- Dept. of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
- Department of Physics, University of Oslo , Oslo, Norway
| | | | - Anna Latysheva
- Department of Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
| | - Elies Fuster-Garcia
- Dept. of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
- BDSLab, Instituto Universitario de Tecnologías de la Información y Comunicaciones, Universitat Politècnica de València , València, Spain
| | - Trine Hjørnevik
- Dept. of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
| | | | - Robin A B Bugge
- Dept. of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
| | - Jack Grinband
- Department of Radiology, Columbia University , New York, USA
- Department of Psychiatry, Columbia University , New York, USA
| | - Sverre Holm
- Department of Physics, University of Oslo , Oslo, Norway
| | - Ralph Sinkus
- Division of Imaging Sciences and Biomedical Engineering, King’s College , London, United Kingdom
- INSERM U1148, LVTS, University Paris Diderot , Paris, France
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory, Dept. of Neurosurgery, Oslo University Hospital , Oslo, Norway
| | - Kyrre Eeg Emblem
- Dept. of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital , Oslo, Norway
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Skaga E, Kulesskiy E, Potdar S, Panagopoulos I, Micci F, Langmoen IA, Sandberg CJ, Vik-Mo EO. Functional temozolomide sensitivity testing of patient-specific glioblastoma stem cell cultures is predictive of clinical outcome. Transl Oncol 2022; 26:101535. [PMID: 36115076 PMCID: PMC9483808 DOI: 10.1016/j.tranon.2022.101535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/18/2022] [Accepted: 09/04/2022] [Indexed: 11/29/2022] Open
Abstract
Serum-free culturing of patient-derived glioblastoma biopsies enrich for glioblastoma stem cells (GSCs) and is recognized as a disease-relevant model system in glioblastoma (GBM). We hypothesized that the temozolomide (TMZ) drug sensitivity of patient-derived GSC cultures correlates to clinical sensitivity patterns and has clinical predictive value in a cohort of GBM patients. To this aim, we established 51 individual GSC cultures from surgical biopsies from both treatment-naïve primary and pretreated recurrent GBM patients. The cultures were evaluated for sensitivity to TMZ over a dosing range achievable in normal clinical practice. Drug efficacy was quantified by the drug sensitivity score. MGMT-methylation status was investigated by pyrosequencing. Correlative, contingency, and survival analyses were performed for associations between experimental and clinical data. We found a heterogeneous response to temozolomide in the GSC culture cohort. There were significant differences in the sensitivity to TMZ between the newly diagnosed and the TMZ-treated recurrent disease (p <0.01). There was a moderate correlation between MGMT-status and sensitivity to TMZ (r=0.459, p=0.0009). The relationship between MGMT status and TMZ efficacy was statistically significant on multivariate analyses (p=0.0051). We found a predictive value of TMZ sensitivity in individual GSC cultures to patient survival (p=0.0089). We conclude that GSC-enriched cultures hold clinical and translational relevance by their ability to reflect the clinical heterogeneity in TMZ-sensitivity, substantiate the association between TMZ-sensitivity and MGMT-promotor methylation status and appear to have a stronger predictive value than MGMT-promotor methylation on clinical responses to TMZ.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway.
| | - Evgeny Kulesskiy
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Swapnil Potdar
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, P.O. Box 4954 Nydalen, 0424, Oslo, Norway
| | - Francesca Micci
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Montebello, P.O. Box 4954 Nydalen, 0424, Oslo, Norway
| | - Iver A Langmoen
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112 Blindern, 0317, Oslo, Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway
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Munkvold BKR, Solheim O, Bartek J, Corell A, de Dios E, Gulati S, Helseth E, Holmgren K, Jensdottir M, Lundborg M, Mireles EEM, Mahesparan R, Tveiten ØV, Milos P, Redebrandt HN, Pedersen LK, Ramm-Pettersen J, Sjöberg RL, Sjögren B, Sjåvik K, Smits A, Tomasevic G, Vecchio TG, Vik-Mo EO, Zetterling M, Salvesen Ø, Jakola AS. Variations in the management of diffuse low-grade gliomas-A Scandinavian multicenter study. Neurooncol Pract 2021; 8:706-717. [PMID: 34777840 PMCID: PMC8579093 DOI: 10.1093/nop/npab054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background Early extensive surgery is a cornerstone in treatment of diffuse low-grade gliomas (DLGGs), and an additional survival benefit has been demonstrated from early radiochemotherapy in selected “high-risk” patients. Still, there are a number of controversies related to DLGG management. The objective of this multicenter population-based cohort study was to explore potential variations in diagnostic work-up and treatment between treating centers in 2 Scandinavian countries with similar public health care systems. Methods Patients screened for inclusion underwent primary surgery of a histopathologically verified diffuse WHO grade II glioma in the time period 2012 through 2017. Clinical and radiological data were collected from medical records and locally conducted research projects, whereupon differences between countries and inter-hospital variations were explored. Results A total of 642 patients were included (male:female ratio 1:4), and annual age-standardized incidence rates were 0.9 and 0.8 per 100 000 in Norway and Sweden, respectively. Considerable inter-hospital variations were observed in preoperative work-up, tumor diagnostics, surgical strategies, techniques for intraoperative guidance, as well as choice and timing of adjuvant therapy. Conclusions Despite geographical population-based case selection, similar health care organizations, and existing guidelines, there were considerable variations in DLGG management. While some can be attributed to differences in clinical implementation of current scientific knowledge, some of the observed inter-hospital variations reflect controversies related to diagnostics and treatment. Quantification of these disparities renders possible identification of treatment patterns associated with better or worse outcomes and may thus represent a step toward more uniform evidence-based care.
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Affiliation(s)
- Bodil Karoline Ravn Munkvold
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Ole Solheim
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Jiri Bartek
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden.,Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.,Department of Neurosurgery, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Alba Corell
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg, Sweden.,Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Eddie de Dios
- Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Sasha Gulati
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, NTNU, Trondheim, Norway.,Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Eirik Helseth
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Klas Holmgren
- Department of Clinical Sciences, Neuroscience, Umeå University, Umeå, Sweden.,Department of Neurosurgery, University Hospital of Northern Sweden, Umeå, Sweden
| | - Margret Jensdottir
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Mina Lundborg
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | | | - Ruby Mahesparan
- Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Øystein Vesterli Tveiten
- Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
| | - Peter Milos
- Department of Neurosurgery, Linköping University Hospital, Sweden
| | - Henrietta Nittby Redebrandt
- Department of Clinical Sciences, Lund University, Lund, Sweden.,Department of Neurosurgery, Skåne University Hospital, Lund, Sweden
| | | | | | - Rickard L Sjöberg
- Department of Clinical Sciences, Neuroscience, Umeå University, Umeå, Sweden.,Department of Neurosurgery, University Hospital of Northern Sweden, Umeå, Sweden
| | - Björn Sjögren
- Department of Neurosurgery, Linköping University Hospital, Sweden
| | - Kristin Sjåvik
- Department of Neurosurgery, University Hospital of North Norway, Tromsø, Norway
| | - Anja Smits
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg, Sweden
| | - Gregor Tomasevic
- Department of Neurosurgery, Skåne University Hospital, Lund, Sweden
| | - Tomás Gómez Vecchio
- Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg, Sweden
| | - Einar O Vik-Mo
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Maria Zetterling
- Department of Neuroscience, Uppsala University, Uppsala, Sweden.,Department of Neurosurgery, Uppsala University Hospital, Uppsala, Sweden
| | - Øyvind Salvesen
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Asgeir S Jakola
- Department of Neurosurgery, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.,Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg, Sweden.,Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
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8
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Halldorsson S, Svensson SF, Berg HE, Wolrab D, Rise F, Wilkins A, Wilson SR, Holcapek M, Emblem KE, Vik-Mo EO. OTEH-7. Molecular characterization of tumor stiffness in glioblastoma. Neurooncol Adv 2021. [PMCID: PMC8255452 DOI: 10.1093/noajnl/vdab070.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tumor heterogeneity is one of the hallmarks of glioblastoma multiforme (GBM). Morphology within a given GBM tumor can be extremely variable where some regions of the tumor have a soft, gel-like structure while other areas are dense and fibrous. Abnormal mechanical stress and tissue stiffening caused by cancer proliferation are believed to affect vascularity by compressing structurally weak blood vessels and restricting the supply of nutrients and oxygen to the tissue. These effects contribute to a hypoxic microenvironment that promotes disease progression and chemoresistance. The genetic and molecular mechanisms that govern tissue stiffness within GBM tumors, however, are largely unknown. Magnetic Resonance Elastography (MRE) is an emerging technique for quantifying tissue stiffness non-invasively. We have evaluated 10 GBM patients by MRE imaging obtained prior to surgical resection. During surgery, 2–7 stereotactically navigated biopsies were collected from locations within the tumor with varying degrees of measured stiffness. Biopsies were processed to extract RNA, proteins, polar metabolites and lipids. Biomolecules were analyzed on relevant -omics platforms (RNA sequencing, MS-proteomics and lipidomics, NMR of polar metabolites). Differential expression and gene set enrichment analysis of patient paired biopsies indicate an overall increase in macrophage infiltration and extracellular matrix re-organization associated with increased tumor stiffness. Among the most highly upregulated genes in stiff tumor tissue were lymphatic endothelial hyaluronic acid receptor 1 (LYVE-1) and macrophage receptor with collagenous structure (MARCO), both of which have been associated with immune cell infiltration and tissue stiffness. Our preliminary findings offer novel insights into tumor morphology in GBM that can be inferred from imaging prior to surgery. This can be used to identify tumor regions with high risk of progression and infiltration, thereby informing and guiding surgical strategy and may ultimately lead to novel treatment strategies.
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Affiliation(s)
- Skarphedinn Halldorsson
- Institute for Surgical Research, Vilhelm Magnus Laboratory, Oslo University Hospital, Oslo, Norway
| | - Siri Fløgstad Svensson
- Department of Diagnostic Physics, Clinic for Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Henriette Engen Berg
- Department of Chemistry, Section for Chemical Life Sciences, University of Oslo, Oslo, Norway
| | - Denise Wolrab
- Faculty of Chemical Technology, Department of Analytical Chemistry, University of Pardubice, Pardubice, Czech Republic
| | - Frode Rise
- Department of Chemistry, University of Oslo, Oslo, Norway
| | - Alistair Wilkins
- School of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | - Steven Ray Wilson
- Department of Chemistry, Section for Chemical Life Sciences, University of Oslo, Oslo, Norway
| | - Michal Holcapek
- Faculty of Chemical Technology, Department of Analytical Chemistry, University of Pardubice, Pardubice, Czech Republic
| | - Kyrre Eeg Emblem
- Department of Diagnostic Physics, Clinic for Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Einar O Vik-Mo
- Institute for Surgical Research, Vilhelm Magnus Laboratory, Oslo University Hospital, Oslo, Norway
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9
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Djirackor L, Halldorsson S, Niehusmann P, Leske H, Kuschel LP, Pahnke J, Due-Tønnessen BJ, Langmoen IA, Sandberg CJ, Euskirchen P, Vik-Mo EO. EPCT-15. RAPID EPIGENOMIC CLASSIFICATION OF BRAIN TUMORS ENABLES INTRAOPERATIVE NEUROSURGICAL RISK MODULATION. Neuro Oncol 2021. [PMCID: PMC8168188 DOI: 10.1093/neuonc/noab090.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background Clear identification of tumor subtype is the main predictor of patient outcome and ultimately what is considered an adequate level of surgical risk. At brain tumor resection, imaging modalities and intraoperative histology often give an ambigious diagnosis, complicating intraoperative surgical decision-making. Here, we report a nanopore DNA methylation analysis (NDMA) sequencing approach combined with machine learning for classification of tumor entities that could be used intraoperatively. Methods We analyzed 50 biopsies obtained from biobanked tissue (43, prospective) or sampled at surgery (7, intraoperative) from 20 female and 30 male patients with a median age of 8 years. DNA was extracted using spin columns, quantified on a Qubit fluorometer and assessed for purity using NanoDrop spectrophotometer. DNA was then barcoded with the Rapid Barcoding kit from Oxford Nanopore technologies and loaded onto a MinION flow cell. Sequencing was performed for 3 hours (intraoperative) and 24 hours (prospective). Raw reads were basecalled using the Guppy algorithm, then fed into a snakemake workflow (nanoDx pipeline). This generated a report showing the copy number profile, genome-wide methylation status and subclassification of the tumor according to the Heidelberg reference cohort. Results Twelve different tumor classes were discovered within our cohort spanning from WHO Grade I to Grade IV. The results generated by NDMA were concordant with standard neuropathological diagnosis in 43 out of 50 cases (86%). Of the discordant cases, six were due to the biological complexity of the tumor and one case was misclassified by the pipeline. NDMA enabled correct subclassification of 6/7 intraop cases within a mean of 129 minutes. Conclusion NDMA can accurately subclassify tumor entities intraoperatively and guide surgical procedures when preoperative imaging and frozen section evaluation are unclear.
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Affiliation(s)
- Luna Djirackor
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research/ Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Skarphedinn Halldorsson
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research/ Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Pitt Niehusmann
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine (KlinMED), Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Henning Leske
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine (KlinMED), Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Luis P Kuschel
- Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jens Pahnke
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Department of Pharmacology, Faculty of Medicine, University of Latvia, Riga, Latvia
| | | | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research/ Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research/ Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Philipp Euskirchen
- Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin, Germany
- German Cancer Consortium (DKTK), partner site Berlin, German Cancer Research Center (DKFZ), Berlin, Germany
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research/ Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
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10
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Skaga E, Skretteberg MA, Johannesen TB, Brandal P, Vik-Mo EO, Helseth E, Langmoen IA. Real-world validity of randomized controlled phase III trials in newly diagnosed glioblastoma: to whom do the results of the trials apply? Neurooncol Adv 2021; 3:vdab008. [PMID: 33665615 PMCID: PMC7914075 DOI: 10.1093/noajnl/vdab008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Background The survival rates in population-based series of glioblastoma (GBM) differ substantially from those reported in clinical trials. This discrepancy may be attributed to that patients recruited to trials tend to be younger with better performance status. However, the proportion and characteristics of the patients in a population considered either eligible or ineligible for trials is unknown. The generalizability of trial results is therefore also uncertain. Methods Using the Cancer Registry of Norway and the Brain Tumor Database at Oslo University Hospital, we tracked all patients within a well-defined geographical area with newly diagnosed GBM during the years 2012–2017. Based on data from these registries and the medical records, the patients were evaluated for trial eligibility according to criteria employed in recent phase III trials for GBM. Results We identified 512 patients. The median survival was 11.7 months. When we selected a potential trial population at the start of concurrent chemoradiotherapy (radiotherapy [RT]/ temozolomide [TMZ]) by the parameters age (18–70 y), passed surgery for a supratentorial GBM, Eastern Cooperative Oncology Group (ECOG) ≤2, normal hematologic, hepatic and renal function, and lack of severe comorbidity, 57% of the patients were excluded. Further filtering the patients who progressed during RT/TMZ and never completed RT/TMZ resulted in exclusion of 59% and 63% of the patients, respectively. The survival of patients potentially eligible for trials was significantly higher than of the patients not fulfilling trial eligibility criteria (P < .0001). Conclusions Patients considered eligible for phase III clinical trials represent a highly selected minority of patients in a real-world GBM population.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | | | | | - Petter Brandal
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Eirik Helseth
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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11
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Svensson SF, De Arcos J, Darwish OI, Fraser-Green J, Storås TH, Holm S, Vik-Mo EO, Sinkus R, Emblem KE. Robustness of MR Elastography in the Healthy Brain: Repeatability, Reliability, and Effect of Different Reconstruction Methods. J Magn Reson Imaging 2021; 53:1510-1521. [PMID: 33403750 DOI: 10.1002/jmri.27475] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Changes in brain stiffness can be an important biomarker for neurological disease. Magnetic resonance elastography (MRE) quantifies tissue stiffness, but the results vary between acquisition and reconstruction methods. PURPOSE To measure MRE repeatability and estimate the effect of different reconstruction methods and varying data quality on estimated brain stiffness. STUDY TYPE Prospective. SUBJECTS Fifteen healthy subjects. FIELD STRENGTH/SEQUENCE 3T MRI, gradient-echo elastography sequence with a 50 Hz vibration frequency. ASSESSMENT Imaging was performed twice in each subject. Images were reconstructed using a curl-based and a finite-element-model (FEM)-based method. Stiffness was measured in the whole brain, in white matter, and in four cortical and four deep gray matter regions. Repeatability coefficients (RC), intraclass correlation coefficients (ICC), and coefficients of variation (CV) were calculated. MRE data quality was quantified by the ratio between shear waves and compressional waves. STATISTICAL TESTS Median values with range are presented. Reconstruction methods were compared using paired Wilcoxon signed-rank tests, and Spearman's rank correlation was calculated between MRE data quality and stiffness. Holm-Bonferroni corrections were employed to adjust for multiple comparisons. RESULTS In the whole brain, CV was 4.3% and 3.8% for the curl and the FEM reconstruction, respectively, with 4.0-12.8% for subregions. Whole-brain ICC was 0.60-0.74, ranging from 0.20 to 0.89 in different regions. RC for the whole brain was 0.14 kPa and 0.17 kPa for the curl and FEM methods, respectively. FEM reconstruction resulted in 39% higher stiffness than the curl reconstruction (P < 0.05). MRE data quality, defined as shear-compression wave ratio, was higher in peripheral regions than in central regions of the brain (P < 0.05). No significant correlations were observed between MRE data quality and stiffness estimates. DATA CONCLUSION MRE of the human brain is a robust technique in terms of repeatability. Caution is warranted when comparing stiffness values obtained with different techniques. LEVEL OF EVIDENCE 1 TECHNICAL EFFICACY STAGE: 1.
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Affiliation(s)
- Siri F Svensson
- Department of Diagnostic Physics, Oslo University Hospital, Oslo, Norway.,Department of Physics, University of Oslo, Oslo, Norway
| | - José De Arcos
- Division of Imaging Sciences and Biomedical Engineering, King's College, London, UK.,INSERM U1148, LVTS, University Paris Diderot, Paris, France
| | - Omar Isam Darwish
- Division of Imaging Sciences and Biomedical Engineering, King's College, London, UK
| | | | - Tryggve H Storås
- Department of Diagnostic Physics, Oslo University Hospital, Oslo, Norway
| | - Sverre Holm
- Department of Physics, University of Oslo, Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory, Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Ralph Sinkus
- Division of Imaging Sciences and Biomedical Engineering, King's College, London, UK.,INSERM U1148, LVTS, University Paris Diderot, Paris, France
| | - Kyrre E Emblem
- Department of Diagnostic Physics, Oslo University Hospital, Oslo, Norway
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12
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Djirackor L, Halldorsson S, Niehusmann P, Leske H, Capper D, Kuschel LP, Pahnke J, Due-Tønnessen BJ, Langmoen IA, Sandberg CJ, Euskirchen P, Vik-Mo EO. Intraoperative DNA methylation classification of brain tumors impacts neurosurgical strategy. Neurooncol Adv 2021; 3:vdab149. [PMID: 34729487 PMCID: PMC8557693 DOI: 10.1093/noajnl/vdab149] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Brain tumor surgery must balance the benefit of maximal resection against the risk of inflicting severe damage. The impact of increased resection is diagnosis-specific. However, the precise diagnosis is typically uncertain at surgery due to limitations of imaging and intraoperative histomorphological methods. Novel and accurate strategies for brain tumor classification are necessary to support personalized intraoperative neurosurgical treatment decisions. Here, we describe a fast and cost-efficient workflow for intraoperative classification of brain tumors based on DNA methylation profiles generated by low coverage nanopore sequencing and machine learning algorithms. METHODS We evaluated 6 independent cohorts containing 105 patients, including 50 pediatric and 55 adult patients. Ultra-low coverage whole-genome sequencing was performed on nanopore flow cells. Data were analyzed using copy number variation and ad hoc random forest classifier for the genome-wide methylation-based classification of the tumor. RESULTS Concordant classification was obtained between nanopore DNA methylation analysis and a full neuropathological evaluation in 93 of 105 (89%) cases. The analysis demonstrated correct diagnosis in 6/6 cases where frozen section evaluation was inconclusive. Results could be returned to the operating room at a median of 97 min (range 91-161 min). Precise classification of the tumor entity and subtype would have supported modification of the surgical strategy in 12 out of 20 patients evaluated intraoperatively. CONCLUSION Intraoperative nanopore sequencing combined with machine learning diagnostics was robust, sensitive, and rapid. This strategy allowed DNA methylation-based classification of the tumor to be returned to the surgeon within a timeframe that supports intraoperative decision making.
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Affiliation(s)
- Luna Djirackor
- Institute for Surgical Research/Department of Neurosurgery, Vilhelm Magnus Laboratory for Neurosurgical Research, Oslo University Hospital, Oslo, Norway
| | - Skarphedinn Halldorsson
- Institute for Surgical Research/Department of Neurosurgery, Vilhelm Magnus Laboratory for Neurosurgical Research, Oslo University Hospital, Oslo, Norway
| | - Pitt Niehusmann
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine (KlinMED), University of Oslo, Oslo, Norway
| | - Henning Leske
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine (KlinMED), University of Oslo, Oslo, Norway
| | - David Capper
- Department of Neuropathology, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charité-Universitätsmedizin Berlin, Berlin, Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Luis P Kuschel
- Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin,Germany
| | - Jens Pahnke
- Section of Neuropathology, Department of Pathology, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine (KlinMED), University of Oslo, Oslo, Norway
- Department of Pharmacology, Faculty of Medicine, University of Latvia, Riga, Latvia
| | | | - Iver A Langmoen
- Institute for Surgical Research/Department of Neurosurgery, Vilhelm Magnus Laboratory for Neurosurgical Research, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine (KlinMED), University of Oslo, Oslo, Norway
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Cecilie J Sandberg
- Institute for Surgical Research/Department of Neurosurgery, Vilhelm Magnus Laboratory for Neurosurgical Research, Oslo University Hospital, Oslo, Norway
| | - Philipp Euskirchen
- German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Neurology, Charité-Universitätsmedizin Berlin, Berlin,Germany
- Berlin Institute of Health (BIH), Berlin, Germany
| | - Einar O Vik-Mo
- Institute for Surgical Research/Department of Neurosurgery, Vilhelm Magnus Laboratory for Neurosurgical Research, Oslo University Hospital, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine (KlinMED), University of Oslo, Oslo, Norway
- Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
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13
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Skaga E, Kulesskiy E, Brynjulvsen M, Sandberg CJ, Potdar S, Langmoen IA, Laakso A, Gaál-Paavola E, Perola M, Wennerberg K, Vik-Mo EO. Feasibility study of using high-throughput drug sensitivity testing to target recurrent glioblastoma stem cells for individualized treatment. Clin Transl Med 2019; 8:33. [PMID: 31889236 PMCID: PMC6937360 DOI: 10.1186/s40169-019-0253-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/19/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Despite the well described heterogeneity in glioblastoma (GBM), treatment is standardized, and clinical trials investigate treatment effects at population level. Genomics-driven oncology for stratified treatments allow clinical decision making in only a small minority of screened patients. Addressing tumor heterogeneity, we aimed to establish a clinical translational protocol in recurrent GBM (recGBM) utilizing autologous glioblastoma stem cell (GSC) cultures and automated high-throughput drug sensitivity and resistance testing (DSRT) for individualized treatment within the time available for clinical application. RESULTS From ten patients undergoing surgery for recGBM, we established individual cell cultures and characterized the GSCs by functional assays. 7/10 GSC cultures could be serially expanded. The individual GSCs displayed intertumoral differences in their proliferative capacity, expression of stem cell markers and variation in their in vitro and in vivo morphology. We defined a time frame of 10 weeks from surgery to complete the entire pre-clinical work-up; establish individualized GSC cultures, evaluate drug sensitivity patterns of 525 anticancer drugs, and identify options for individualized treatment. Within the time frame for clinical translation 5/7 cultures reached sufficient cell yield for complete drug screening. The DSRT revealed significant intertumoral heterogeneity to anticancer drugs (p < 0.0001). Using curated reference databases of drug sensitivity in GBM and healthy bone marrow cells, we identified individualized treatment options in all patients. Individualized treatment options could be selected from FDA-approved drugs from a variety of different drug classes in all cases. CONCLUSIONS In recGBM, GSC cultures could successfully be established in the majority of patients. The individual cultures displayed intertumoral heterogeneity in their in vitro and in vivo behavior. Within a time frame for clinical application, we could perform DSRT in 50% of recGBM patients. The DSRT revealed a remarkable intertumoral heterogeneity in sensitivity to anticancer drugs in recGBM that could allow tailored therapeutic options for functional precision medicine.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway. .,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway.
| | - Evgeny Kulesskiy
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Marit Brynjulvsen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
| | - Swapnil Potdar
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
| | - Aki Laakso
- Department of Neurosurgery, Helsinki University Hospital and Clinical Neurosciences, University of Helsinki, Topeliuksenkatu 5, 00260, Helsinki, Finland
| | - Emília Gaál-Paavola
- Department of Neurosurgery, Helsinki University Hospital and Clinical Neurosciences, University of Helsinki, Topeliuksenkatu 5, 00260, Helsinki, Finland
| | - Markus Perola
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Krister Wennerberg
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
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Skaga E, Kulesskiy E, Fayzullin A, Sandberg CJ, Potdar S, Kyttälä A, Langmoen IA, Laakso A, Gaál-Paavola E, Perola M, Wennerberg K, Vik-Mo EO. Intertumoral heterogeneity in patient-specific drug sensitivities in treatment-naïve glioblastoma. BMC Cancer 2019; 19:628. [PMID: 31238897 PMCID: PMC6593575 DOI: 10.1186/s12885-019-5861-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 06/20/2019] [Indexed: 02/15/2023] Open
Abstract
Background A major barrier to effective treatment of glioblastoma (GBM) is the large intertumoral heterogeneity at the genetic and cellular level. In early phase clinical trials, patient heterogeneity in response to therapy is commonly observed; however, how tumor heterogeneity is reflected in individual drug sensitivities in the treatment-naïve glioblastoma stem cells (GSC) is unclear. Methods We cultured 12 patient-derived primary GBMs as tumorspheres and validated tumor stem cell properties by functional assays. Using automated high-throughput screening (HTS), we evaluated sensitivity to 461 anticancer drugs in a collection covering most FDA-approved anticancer drugs and investigational compounds with a broad range of molecular targets. Statistical analyses were performed using one-way ANOVA and Spearman correlation. Results Although tumor stem cell properties were confirmed in GSC cultures, their in vitro and in vivo morphology and behavior displayed considerable tumor-to-tumor variability. Drug screening revealed significant differences in the sensitivity to anticancer drugs (p < 0.0001). The patient-specific vulnerabilities to anticancer drugs displayed a heterogeneous pattern. They represented a variety of mechanistic drug classes, including apoptotic modulators, conventional chemotherapies, and inhibitors of histone deacetylases, heat shock proteins, proteasomes and different kinases. However, the individual GSC cultures displayed high biological consistency in drug sensitivity patterns within a class of drugs. An independent laboratory confirmed individual drug responses. Conclusions This study demonstrates that patient-derived and treatment-naïve GSC cultures maintain patient-specific traits and display intertumoral heterogeneity in drug sensitivity to anticancer drugs. The heterogeneity in patient-specific drug responses highlights the difficulty in applying targeted treatment strategies at the population level to GBM patients. However, HTS can be applied to uncover patient-specific drug sensitivities for functional precision medicine. Electronic supplementary material The online version of this article (10.1186/s12885-019-5861-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway. .,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112 Blindern, 0317, Oslo, Norway.
| | - Evgeny Kulesskiy
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Artem Fayzullin
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112 Blindern, 0317, Oslo, Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway
| | - Swapnil Potdar
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Aija Kyttälä
- National Institute for Health and Welfare, Genomics and Biomarkers Unit, P.O. Box 30, FI-00271, Helsinki, Finland
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112 Blindern, 0317, Oslo, Norway
| | - Aki Laakso
- Department of Neurosurgery, Helsinki University Hospital and Clinical Neurosciences, University of Helsinki, Topeliuksenkatu 5, 00260, Helsinki, Finland
| | - Emília Gaál-Paavola
- Department of Neurosurgery, Helsinki University Hospital and Clinical Neurosciences, University of Helsinki, Topeliuksenkatu 5, 00260, Helsinki, Finland
| | - Markus Perola
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland.,National Institute for Health and Welfare, Genomics and Biomarkers Unit, P.O. Box 30, FI-00271, Helsinki, Finland
| | - Krister Wennerberg
- Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950 Nydalen, 0424, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, P.O. Box 1112 Blindern, 0317, Oslo, Norway
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Skaga E, Skaga IØ, Grieg Z, Sandberg CJ, Langmoen IA, Vik-Mo EO. The efficacy of a coordinated pharmacological blockade in glioblastoma stem cells with nine repurposed drugs using the CUSP9 strategy. J Cancer Res Clin Oncol 2019; 145:1495-1507. [PMID: 31028540 PMCID: PMC6527541 DOI: 10.1007/s00432-019-02920-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 04/15/2019] [Indexed: 12/22/2022]
Abstract
PURPOSE Constructed from a theoretical framework, the coordinated undermining of survival paths in glioblastoma (GBM) is a combination of nine drugs approved for non-oncological indications (CUSP9; aprepitant, auranofin, captopril, celecoxib, disulfiram, itraconazole, minocycline, quetiapine, and sertraline) combined with temozolomide (TMZ). The availability of these drugs outside of specialized treatment centers has led patients to embark on combination treatments without systematic follow-up. However, no experimental data on efficacy using the CUSP9 strategy in GBM have been reported. METHODS Using patient-derived glioblastoma stem cell (GSC) cultures from 15 GBM patients, we described stem cell properties of individual cultures, determined the dose-response relationships of the drugs in the CUSP9, and assessed the efficacy the CUSP9 combination with TMZ in concentrations clinically achievable. The efficacy was evaluated by cell viability, cytotoxicity, and sphere-forming assays in both primary and recurrent GSC cultures. RESULTS We found that CUSP9 with TMZ induced a combination effect compared to the drugs individually (p < 0.0001). Evaluated by cell viability and cytotoxicity, 50% of the GSC cultures displayed a high sensitivity to the drug combination. In clinical plasma concentrations, the effect of the CUSP9 with TMZ was superior to TMZ monotherapy (p < 0.001). The Wnt-signaling pathway has been shown important in GSC, and CUSP9 significantly reduces Wnt-activity. CONCLUSIONS Adding experimental data to the theoretical rationale of CUSP9, our results demonstrate that the CUSP9 treatment strategy can induce a combination effect in both treatment-naïve and pretreated GSC cultures; however, predicting response in individual cultures will require further profiling of GSCs.
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Affiliation(s)
- Erlend Skaga
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway.
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway.
| | - Ida Ø Skaga
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
| | - Zanina Grieg
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, P.O. Box 1112, Blindern, 0317, Oslo, Norway
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Hvinden IC, Berg HE, Sachse D, Skaga E, Skottvoll FS, Lundanes E, Sandberg CJ, Vik-Mo EO, Rise F, Wilson SR. Nuclear Magnetic Resonance Spectroscopy to Identify Metabolite Biomarkers of Nonresponsiveness to Targeted Therapy in Glioblastoma Tumor Stem Cells. J Proteome Res 2019; 18:2012-2020. [PMID: 30964684 DOI: 10.1021/acs.jproteome.8b00801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Glioblastoma is the most common and malignant brain tumor, and current therapies confer only modest survival benefits. A major obstacle is our ability to monitor treatment effect on tumors. Current imaging modalities are ambiguous, and repeated biopsies are not encouraged. To scout for markers of treatment response, we used NMR spectroscopy to study the effects of a survivin inhibitor on the metabolome of primary glioblastoma cancer stem cells. Applying high resolution NMR spectroscopy (1H resonance frequency: 800.03 MHz) to just 3 million cells per sample, we achieved sensitive and high resolving determinations of, e.g., amino acids, nucleosides, and constituents of the citric acid cycle. For control samples that were cultured, prepared, and measured at varying dates, peak area relative standard deviations were 15-20%. Analyses of unfractionated lysates were performed for straightforward compound identification with COLMAR and HMDB databases. Principal component analysis revealed that citrate levels were clearly upregulated in nonresponsive cells, while lactate levels substantially decreased following treatment for both responsive and nonresponsive cells. Hence, lactate and citrate may be potential markers of successful drug uptake and poor response to survivin inhibitors, respectively. Our metabolomics approach provided alternative biomarker candidates compared to spectrometry-based proteomics, underlining benefits of complementary methodologies. These initial findings make a foundation for exploring in vivo MR spectroscopy (MRS) of brain tumors, as citrate and lactate are MRS-visible. In sum, NMR metabolomics is a tool for addressing glioblastoma.
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Affiliation(s)
- Ingvild Comfort Hvinden
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway.,Department of Chemistry , Chemistry Research Laboratory, University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Henriette Engen Berg
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway
| | - Daniel Sachse
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway
| | - Erlend Skaga
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery , Oslo University Hospital , 4950 Nydalen NO-0424 , Oslo , Norway.,Institute of Clinical Medicine, Faculty of Medicine , University of Oslo , Post Box 1171, Blindern NO-0318 , Oslo , Norway
| | - Frøydis Sved Skottvoll
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway.,Hybrid Technology Hub, Centre of Excellence, Institute of Basic Medical Sciences, Faculty of Medicine , University of Oslo , PO Box 1112, Blindern NO-0317 , Oslo , Norway
| | - Elsa Lundanes
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway
| | - Cecilie J Sandberg
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery , Oslo University Hospital , 4950 Nydalen NO-0424 , Oslo , Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery , Oslo University Hospital , 4950 Nydalen NO-0424 , Oslo , Norway
| | - Frode Rise
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway
| | - Steven Ray Wilson
- Department of Chemistry , University of Oslo , Post Box 1033, Blindern NO-0315 , Oslo , Norway.,Hybrid Technology Hub, Centre of Excellence, Institute of Basic Medical Sciences, Faculty of Medicine , University of Oslo , PO Box 1112, Blindern NO-0317 , Oslo , Norway
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Mughal AA, Zhang L, Fayzullin A, Server A, Li Y, Wu Y, Glass R, Meling T, Langmoen IA, Leergaard TB, Vik-Mo EO. Patterns of Invasive Growth in Malignant Gliomas-The Hippocampus Emerges as an Invasion-Spared Brain Region. Neoplasia 2018; 20:643-656. [PMID: 29793116 PMCID: PMC6030235 DOI: 10.1016/j.neo.2018.04.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 03/07/2018] [Accepted: 04/02/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND: Widespread infiltration of tumor cells into surrounding brain parenchyma is a hallmark of malignant gliomas, but little data exist on the overall invasion pattern of tumor cells throughout the brain. METHODS: We have studied the invasive phenotype of malignant gliomas in two invasive mouse models and patients. Tumor invasion patterns were characterized in a patient-derived xenograft mouse model using brain-wide histological analysis and magnetic resonance (MR) imaging. Findings were histologically validated in a cdkn2a−/− PDGF-β lentivirus-induced mouse glioblastoma model. Clinical verification of the results was obtained by analysis of MR images of malignant gliomas. RESULTS: Histological analysis using human-specific cellular markers revealed invasive tumors with a non-radial invasion pattern. Tumors cells accumulated in structures located far from the transplant site, such as the optic white matter and pons, whereas certain adjacent regions were spared. As such, the hippocampus was remarkably free of infiltrating tumor cells despite the extensive invasion of surrounding regions. Similarly, MR images of xenografted mouse brains displayed tumors with bihemispheric pathology, while the hippocampi appeared relatively normal. In patients, most malignant temporal lobe gliomas were located lateral to the collateral sulcus. Despite widespread pathological fluid-attenuated inversion recovery signal in the temporal lobe, 74% of the “lateral tumors” did not show signs of involvement of the amygdalo-hippocampal complex. CONCLUSIONS: Our data provide clear evidence for a compartmental pattern of invasive growth in malignant gliomas. The observed invasion patterns suggest the presence of preferred migratory paths, as well as intra-parenchymal boundaries that may be difficult for glioma cells to traverse supporting the notion of compartmental growth. In both mice and human patients, the hippocampus appears to be a brain region that is less prone to tumor invasion.
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Affiliation(s)
- Awais A Mughal
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway; Department of Neurosurgery, Oslo University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway.
| | - Lili Zhang
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Artem Fayzullin
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway; Department of Neurosurgery, Oslo University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Andres Server
- Section of Neuroradiology, Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
| | - Yuping Li
- Neurosurgical Research, Ludwig-Maximilian University of Munich, Munich, Germany
| | - Yingxi Wu
- Neurosurgical Research, Ludwig-Maximilian University of Munich, Munich, Germany
| | - Rainer Glass
- Neurosurgical Research, Ludwig-Maximilian University of Munich, Munich, Germany
| | - Torstein Meling
- Department of Neurosurgery, Oslo University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway; Department of Neurosurgery, Oslo University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway; Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Norway
| | - Trygve B Leergaard
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research, Oslo University Hospital, Oslo, Norway; Department of Neurosurgery, Oslo University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway; SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway; Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Norway
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Fayzullin A, Tuvnes FA, Skjellegrind HK, Behnan J, Mughal AA, Langmoen IA, Vik-Mo EO. Time-lapse phenotyping of invasive glioma cells ex vivo reveals subtype-specific movement patterns guided by tumor core signaling. Exp Cell Res 2016; 349:199-213. [PMID: 27515001 DOI: 10.1016/j.yexcr.2016.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 07/28/2016] [Accepted: 08/02/2016] [Indexed: 01/13/2023]
Abstract
The biology of glioblastoma invasion and its mechanisms are poorly understood. We demonstrate using time-lapse microscopy that grafting of glioblastoma (GBM) tumorspheres into rodent brain slices results in experimental ex vivo tumors with invasive properties that recapitulate the invasion observed after orthotopic transplantation into the rodent brain. The migratory movements and mitotic patterns were clearly modified by signals extrinsic to the invading cells. The cells migrated away from the tumorspheres, and removal of the spheres reduced the directed invasive movement. The cell cultures contained different populations of invasive cells that had distinct morphology and invasive behavior patterns. Grafts of the most invasive GBM culture contained 91±8% cells with an invasive phenotype, characterized by small soma with a distinct leading process. Conversely, the majority of cells in less invasive GBM grafts were phenotypically heterogeneous: only 6.3±4.1% of the cells had the invasive phenotype. Grafts of highly and moderately invasive cultures had different proportions of cells that advanced into the brain slice parenchyma during the observation period: 89.2±2.2% and 23.1±6.8%, respectively. In grafts with moderately invasive properties, most of the cells (76.8±6.8%) invading the surrounding brain tissue returned to the tumor bulk or stopped centrifugal migration. Our data suggest that the invasion of individual GBM tumors can be conditioned by the prevalence of a cell fraction with particular invasive morphology and by signaling between the tumor core and invasive cells. These findings can be important for the development of new therapeutic strategies that target the invasive GBM cells.
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Affiliation(s)
- Artem Fayzullin
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway.
| | - Frode A Tuvnes
- Institute of Basic Medical Sciences, Department of Physiology, University of Oslo, 1103 Blindern, 0317 Oslo, Norway
| | - Håvard K Skjellegrind
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway
| | - Jinan Behnan
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway
| | - Awais A Mughal
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory of Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, 4950 Nydalen, 0424 Oslo, Norway
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Mughal AA, Grieg Z, Skjellegrind H, Fayzullin A, Lamkhannat M, Joel M, Ahmed MS, Murrell W, Vik-Mo EO, Langmoen IA, Stangeland B. Knockdown of NAT12/NAA30 reduces tumorigenic features of glioblastoma-initiating cells. Mol Cancer 2015; 14:160. [PMID: 26292663 PMCID: PMC4546247 DOI: 10.1186/s12943-015-0432-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 08/12/2015] [Indexed: 01/21/2023] Open
Abstract
Background Glioblastoma (GBM) is the most common primary brain malignancy and confers a dismal prognosis. GBMs harbor glioblastoma-initiating cells (GICs) that drive tumorigenesis and contribute to therapeutic resistance and tumor recurrence. Consequently, there is a strong rationale to target this cell population in order to develop new molecular therapies against GBM. Accumulating evidence indicates that Nα-terminal acetyltransferases (NATs), that are dysregulated in numerous human cancers, can serve as therapeutic targets. Methods Microarrays were used to study the expression of several NATs including NAT12/NAA30 in clinical samples and stem cell cultures. The expression of NAT12/NAA30 was analyzed using qPCR, immunolabeling and western blot. We conducted shRNA-mediated knockdown of NAT12/NAA30 gene in GICs and studied the effects on cell viability, sphere-formation and hypoxia sensitivity. Intracranial transplantation to SCID mice enabled us to investigate the effects of NAT12/NAA30 depletion in vivo. Using microarrays we identified genes and biochemical pathways whose expression was altered upon NAT12/NAA30 down-regulation. Results While decreased expression of the distal 3’UTR of NAT12/NAA30 was generally observed in GICs and GBMs, this gene was strongly up-regulated at the protein level in GBM and GICs. The increased protein levels were not caused by increased levels of the steady state mRNA but rather by other mechanisms. Also, shorter 3’UTR of NAT12/NAA30 correlated with poor survival in glioma patients. As well, we observed previously not described nuclear localization of this typically cytoplasmic protein. When compared to non-silencing controls, cells featuring NAT12/NAA30 knockdown exhibited reduced cell viability, sphere-forming ability, and mitochondrial hypoxia tolerance. Intracranial transplantation showed that knockdown of NAT12/NAA30 resulted in prolonged animal survival. Microarray analysis of the knockdown cultures showed reduced levels of HIF1α and altered expression of several other genes involved in the hypoxia response. Furthermore, NAT12/NAA30 knockdown correlated with expressional dysregulation of genes involved in the p53 pathway, ribosomal assembly and cell proliferation. Western blot analysis revealed reduction of HIF1α, phospho-MTOR(Ser2448) and higher levels of p53 and GFAP in these cultures. Conclusion NAT12/NAA30 plays an important role in growth and survival of GICs possibly by regulating hypoxia response (HIF1α), levels of p-MTOR (Ser2448) and the p53 pathway. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0432-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Awais A Mughal
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway.
| | - Zanina Grieg
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.
| | - Håvard Skjellegrind
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.
| | - Artem Fayzullin
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.
| | - Mustapha Lamkhannat
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.
| | - Mrinal Joel
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway. .,Laboratory of Neural Development and Optical Recording (NDEVOR), Department of Physiology, Institute of Basic Medical Sciences University of Oslo, Oslo, Norway.
| | - M Shakil Ahmed
- Institute for Surgical Research, Oslo University Hospital and Center for Heart Failure Research, University of Oslo, Oslo, Norway.
| | - Wayne Murrell
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway.
| | - Einar O Vik-Mo
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway. .,Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.
| | - Iver A Langmoen
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway. .,Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital, Oslo, Norway.
| | - Biljana Stangeland
- Vilhelm Magnus Laboratory for Neurosurgical Research, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway. .,SFI-CAST-Cancer Stem Cell Innovation Center, Oslo University Hospital, Oslo, Norway.
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Sandberg CJ, Vik-Mo EO, Behnan J, Helseth E, Langmoen IA. Transcriptional profiling of adult neural stem-like cells from the human brain. PLoS One 2014; 9:e114739. [PMID: 25514637 PMCID: PMC4267785 DOI: 10.1371/journal.pone.0114739] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 11/13/2014] [Indexed: 12/11/2022] Open
Abstract
There is a great potential for the development of new cell replacement strategies based on adult human neural stem-like cells. However, little is known about the hierarchy of cells and the unique molecular properties of stem- and progenitor cells of the nervous system. Stem cells from the adult human brain can be propagated and expanded in vitro as free floating neurospheres that are capable of self-renewal and differentiation into all three cell types of the central nervous system. Here we report the first global gene expression study of adult human neural stem-like cells originating from five human subventricular zone biopsies (mean age 42, range 33–60). Compared to adult human brain tissue, we identified 1,189 genes that were significantly up- and down-regulated in adult human neural stem-like cells (1% false discovery rate). We found that adult human neural stem-like cells express stem cell markers and have reduced levels of markers that are typical of the mature cells in the nervous system. We report that the genes being highly expressed in adult human neural stem-like cells are associated with developmental processes and the extracellular region of the cell. The calcium signaling pathway and neuroactive ligand-receptor interactions are enriched among the most differentially regulated genes between adult human neural stem-like cells and adult human brain tissue. We confirmed the expression of 10 of the most up-regulated genes in adult human neural stem-like cells in an additional sample set that included adult human neural stem-like cells (n = 6), foetal human neural stem cells (n = 1) and human brain tissues (n = 12). The NGFR, SLITRK6 and KCNS3 receptors were further investigated by immunofluorescence and shown to be heterogeneously expressed in spheres. These receptors could potentially serve as new markers for the identification and characterisation of neural stem- and progenitor cells or as targets for manipulation of cellular fate.
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Affiliation(s)
- Cecilie Jonsgar Sandberg
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- * E-mail:
| | - Einar O. Vik-Mo
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Jinan Behnan
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Eirik Helseth
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
| | - Iver A. Langmoen
- Vilhelm Magnus Lab, Institute for Surgical Research and Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
- Cancer Stem Cell Innovation Center (CAST), Oslo University Hospital and University of Oslo, Oslo, Norway
- Norwegian Stem Cell Center, Oslo University Hospital and University of Oslo, Oslo, Norway
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Behnan J, Isakson P, Joel M, Cilio C, Langmoen IA, Vik-Mo EO, Badn W. Recruited brain tumor-derived mesenchymal stem cells contribute to brain tumor progression. Stem Cells 2014; 32:1110-23. [PMID: 24302539 DOI: 10.1002/stem.1614] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 10/04/2013] [Accepted: 10/23/2013] [Indexed: 11/08/2022]
Abstract
The identity of the cells that contribute to brain tumor structure and progression remains unclear. Mesenchymal stem cells (MSCs) have recently been isolated from normal mouse brain. Here, we report the infiltration of MSC-like cells into the GL261 murine glioma model. These brain tumor-derived mesenchymal stem cells (BT-MSCs) are defined with the phenotype (Lin-Sca-1+CD9+CD44+CD166+/-) and have multipotent differentiation capacity. We show that the infiltration of BT-MSCs correlates to tumor progression; furthermore, BT-MSCs increased the proliferation rate of GL261 cells in vitro. For the first time, we report that the majority of GL261 cells expressed mesenchymal phenotype under both adherent and sphere culture conditions in vitro and that the non-MSC population is nontumorigenic in vivo. Although the GL261 cell line expressed mesenchymal phenotype markers in vitro, most BT-MSCs are recruited cells from host origin in both wild-type GL261 inoculated into green fluorescent protein (GFP)-transgenic mice and GL261-GFP cells inoculated into wild-type mice. We show the expression of chemokine receptors CXCR4 and CXCR6 on different recruited cell populations. In vivo, the GL261 cells change marker profile and acquire a phenotype that is more similar to cells growing in sphere culture conditions. Finally, we identify a BT-MSC population in human glioblastoma that is CD44+CD9+CD166+ both in freshly isolated and culture-expanded cells. Our data indicate that cells with MSC-like phenotype infiltrate into the tumor stroma and play an important role in tumor cell growth in vitro and in vivo. Thus, we suggest that targeting BT-MSCs could be a possible strategy for treating glioblastoma patients.
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Affiliation(s)
- Jinan Behnan
- Vilhelm Magnus Laboratory, Institute for Surgical Research, CAST-Cancer Stem Cell Innovation Center and Norwegian Center for Stem Cell Research, Oslo University Hospital, Oslo, Norway; Glioma Immunotherapy Group, Institute for Clinical Sciences, Department of Neurosurgery, Lund University, Lund, Sweden
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Joel M, Sandberg CJ, Boulland JL, Vik-Mo EO, Langmoen IA, Glover JC. Inhibition of tumor formation and redirected differentiation of glioblastoma cells in a xenotypic embryonic environment. Dev Dyn 2013; 242:1078-93. [DOI: 10.1002/dvdy.24001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 06/05/2013] [Accepted: 06/05/2013] [Indexed: 11/08/2022] Open
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Fossdal G, Vik-Mo EO, Sandberg C, Varghese M, Kaarbø M, Telmo E, Langmoen IA, Murrell W. Aqp 9 and brain tumour stem cells. ScientificWorldJournal 2012; 2012:915176. [PMID: 22262958 PMCID: PMC3259507 DOI: 10.1100/2012/915176] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 10/08/2011] [Indexed: 01/01/2023] Open
Abstract
Several studies have implicated the aquaporins (aqp) 1, 4, and 9 in the pathogenesis of malignant brain tumours, suggesting that they contribute to motility, invasiveness, and oedema formation and facilitate metabolism in tumour cells under hypoxic conditions. We have studied the expression of aqp1, 4, and 9 in biopsies from glioblastomas, isolated tumour stem cells grown in a tumoursphere assay and analyzed the progenitor and differentiated cells from these cultures. We have compared these to the situation in normal rat brain, its stem cells, and differentiated cells derived thereof. In short, qPCR in tumour tissue showed presence of aqp1, 4, and 9. In the tumour progenitor population, aqp9 was markedly more highly expressed, whilst in tumour-derived differentiated cells, aqp4 was downregulated. However, immunostaining did not reveal increased protein expression of aqp9 in the tumourspheres containing progenitor cells; in contrast, its expression (both mRNA and protein) was high in differentiated cultures. We, therefore, propose that aquaporin 9 may have a central role in the tumorigenesis of glioblastoma.
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Affiliation(s)
- Guri Fossdal
- Vilhelm Magnus laboratory, Institute for Surgical Research, Norwegian National Hospital, Oslo University Hospital, 0450 Oslo, Norway
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Varghese M, Olstorn H, Sandberg C, Vik-Mo EO, Noordhuis P, Nistér M, Berg-Johnsen J, Moe MC, Langmoen IA. A comparison between stem cells from the adult human brain and from brain tumors. Neurosurgery 2009; 63:1022-33; discussion 1033-4. [PMID: 19057315 DOI: 10.1227/01.neu.0000335792.85142.b0] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE To directly compare stem cells from the normal adult human brain (adult human neural stem cells [AHNSC]), Grade II astrocytomas (AC II), and glioblastoma multiforme (GBM), with respect to proliferative and tumor-forming capacity and differentiation potential. METHODS Cells were isolated from tissue obtained during epilepsy surgery (AHNSCs) or tumor surgery (glioma stem cells [GSC]). They were cultured and investigated in vitro or after transplantation in immunodeficient mice. RESULTS Under identical experimental conditions, the following were found: 1) GBM stem cells formed tumors after orthotopic transplantation; AHNSCs showed no sign of tumor formation; 2) GSCs showed a significantly higher growth rate and self-renewal capacity; 3) both the growth rate and telomerase expression were high in GSCs and correlated with malignancy grade (GBM higher than AC II); AHNSCs had low telomerase expression; 4) GSCs invaded normal neurospheres, not vice versa; 5) both AHNSCs and stem cells from AC II and GBM responded to differentiation cues with a dramatic decrease in the proliferation index (Ki-67); 6) GSCs differentiated faster than AHNSCs; 7) upon differentiation, AHNSCs produced normal glia and neurons; GSCs produced morphologically aberrant cells often expressing both glial and neuronal antigens; and 8) differentiation of AHNSCs resulted in 2 typical functional phenotypes: neurons (high electrical membrane resistance, ability to generate action potentials) and glial cells (low membrane resistance, no action potentials). In contrast, GSCs resulted in only 1 functional phenotype: cells with high electrical resistance and active membrane properties capable of generating action potentials. CONCLUSION AHNSCs and stem cells from AC II and GBM differ with respect to proliferation, tumor-forming capacity, and rate and pattern of differentiation.
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Affiliation(s)
- Mercy Varghese
- Vilhelm Magnus Laboratory, Institute for Surgical Research, University of Oslo, Oslo, Norway.
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Vik-Mo EO, Oltedal L, Hoivik EA, Kleivdal H, Eidet J, Davanger S. Sec6 is localized to the plasma membrane of mature synaptic terminals and is transported with secretogranin II-containing vesicles. Neuroscience 2003; 119:73-85. [PMID: 12763070 DOI: 10.1016/s0306-4522(03)00065-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The sec6/8 (exocyst) complex is implicated in targeting of vesicles for regulated exocytosis in various cell types and is believed to play a role in synaptogenesis and brain development. We show that the subunits sec6 and sec8 are present at significant levels in neurons of adult rat brain, and that immunoreactivity for the two subunits has a differential subcellular distribution. We show that in developing as well as mature neurons sec6 is concentrated at the inside of the presynaptic plasma membrane, while sec8 immunoreactivity shows a diffuse cytoplasmic distribution. Among established, strongly synaptophysin-positive neuronal boutons, sec6 displays highly differential concentrations, indicating a role for the complex independent of the ongoing synaptic-vesicle release activity. Sec6 is transported along neurites on secretogranin II-positive vesicles, while sec6-negative/secretogranin II-positive vesicles stay in the cell body. In PC12 cells, sec6-positive vesicles accumulate at the plasma membrane at sites of cell-cell contact. Neuronal induction of the PC12 cells with nerve growth factor shows that sec8 is not freely soluble, but may probably interact with cytoskeletal elements. The complex may facilitate the targeting of membrane material to presynaptic sites and may possibly shuttle vesicles from the cytoskeletal transport machinery to presynaptic membrane sites. Thus, we suggest that the exocyst complex serves to modulate exocytotic activity, by targeting membrane material to its presynaptic destination.
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Affiliation(s)
- E O Vik-Mo
- Department of Anatomy and Cell Biology, University of Bergen, Arstadveien 19, 5009 Bergen, Norway
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Abstract
The molecular events underlying vesicular trafficking probably involve the formation and dissolution of protein complexes between integral components of the vesicle and its target membrane. SNAP-25 is associated with the plasma membrane and is a component of a core protein complex thought to be essential for neurotransmitter release. We have previously characterized a protein, hrs-2, that interacts with SNAP-25 and inhibits secretion from permeabilized PC12 cells. The cellular localization and developmental expression patterns of a number of proteins involved in the secretion machinery have been documented. To understand more about the possible cellular role of hrs-2, we have examined hrs-2 distribution, developmental expression and subcellular localization in rat tissues and cell lines. We show herein that the distribution of hrs-2 in brain and periphery parallels that of SNAP-23/25, and that recombinant hrs-2 binds to both SNAP-23 and SNAP-25. Hrs-2 mRNA and protein are found almost ubiquitously in neurons in the brain. Hrs-2 mRNA is expressed in the neural tube at E10 and thereafter mRNA and protein levels remain relatively constant in the whole brain through adulthood. In cultured PC12 cells, endogenous hrs-2 is expressed in the cytoplasm and on the limiting membranes of multivesicular bodies. Overexpression of hrs-2 in mammalian cells results in the appearance of large intracellular compartments that are labelled with hrs-2 antibodies. The wide distribution, the interaction with SNAP-23 and the localization on multivesicular body membranes suggest a general role for hrs-2 in cellular machinery.
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Affiliation(s)
- S Tsujimoto
- Department of Neurobiology and Anatomy, The W.M. Keck Center for the Neurobiology of Learning and Memory, University of Texas Medical School, Houston 77030, USA
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