3
|
Canale S, Rodrigo S, Tourdias T, Mellerio C, Perrin M, Souillard R, Oppenheim C, Meder JF. [Grading of adults primitive glial neoplasms using arterial spin-labeled perfusion MR imaging]. J Neuroradiol 2011; 38:207-13. [PMID: 21353707 DOI: 10.1016/j.neurad.2010.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Revised: 12/05/2010] [Accepted: 12/12/2010] [Indexed: 11/29/2022]
Abstract
PURPOSE We investigated the relationship between tumor blood-flow measurement based on perfusion-imaging by arterial spin-labeling (ASL) and histopathologic findings in adults' primitive glial tumours. PATIENTS AND METHODS Thus, 40 primitive brain tumors (8 low-grade and 32 high-grade gliomas according to the Sainte-Anne classification) were imaged using pulsed (n=19) or continuous (n=21) ASL. Relative cerebral blood flow (rCBF=tumoral blood flow/normal cerebral blood flow) between high- and low-grade gliomas were compared. RESULTS Using pulsed ASL, differences in mean rCBF were observed in high- and low-grade gliomas although no significant (respectively 1.95 and 1.5). Using continuous ASL, mean rCBF were significantly higher for high-grade than for low-grade gliomas (P<0.05). High-grade gliomas could be discriminated using a CBF threshold of 1.18, with a sensitivity of 88%, specificity of 60%, predictive positive value of 88%, and predictive negative value of 60%. CONCLUSION ASL-based perfusion provides a quantitative, non-invasive alternative to dynamic susceptibility contrast perfusion MR methods for evaluating CBF. ASL is a suitable method for gliomas initial staging and could be useful to identify intermediate tumoral evolution.
Collapse
Affiliation(s)
- S Canale
- Service de neuroradiologie, centre hospitalier Sainte-Anne, université Paris Descartes, 1, rue Cabanis, 75014 Paris, France
| | | | | | | | | | | | | | | |
Collapse
|
4
|
Thirant C, Bessette B, Varlet P, Puget S, Cadusseau J, Dos Reis Tavares S, Studler JM, Silvestre DC, Susini A, Villa C, Miquel C, Bogeas A, Surena AL, Dias-Morais A, Léonard N, Pflumio F, Bièche I, Boussin FD, Sainte-Rose C, Grill J, Daumas-Duport C, Chneiweiss H, Junier MP. Clinical relevance of tumor cells with stem-like properties in pediatric brain tumors. PLoS One 2011; 6:e16375. [PMID: 21297991 PMCID: PMC3030582 DOI: 10.1371/journal.pone.0016375] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 12/19/2010] [Indexed: 11/19/2022] Open
Abstract
Background Primitive brain tumors are the leading cause of cancer-related death in children. Tumor cells with stem-like properties (TSCs), thought to account for tumorigenesis and therapeutic resistance, have been isolated from high-grade gliomas in adults. Whether TSCs are a common component of pediatric brain tumors and are of clinical relevance remains to be determined. Methodology/Principal Findings Tumor cells with self-renewal properties were isolated with cell biology techniques from a majority of 55 pediatric brain tumors samples, regardless of their histopathologies and grades of malignancy (57% of embryonal tumors, 57% of low-grade gliomas and neuro-glial tumors, 70% of ependymomas, 91% of high-grade gliomas). Most high-grade glioma-derived oncospheres (10/12) sustained long-term self-renewal akin to neural stem cells (>7 self-renewals), whereas cells with limited renewing abilities akin to neural progenitors dominated in all other tumors. Regardless of tumor entities, the young age group was associated with self-renewal properties akin to neural stem cells (P = 0.05, chi-square test). Survival analysis of the cohort showed an association between isolation of cells with long-term self-renewal abilities and a higher patient mortality rate (P = 0.013, log-rank test). Sampling of low- and high-grade glioma cultures showed that self-renewing cells forming oncospheres shared a molecular profile comprising embryonic and neural stem cell markers. Further characterization performed on subsets of high-grade gliomas and one low-grade glioma culture showed combination of this profile with mesenchymal markers, the radio-chemoresistance of the cells and the formation of aggressive tumors after intracerebral grafting. Conclusions/Significance In brain tumors affecting adult patients, TSCs have been isolated only from high-grade gliomas. In contrast, our data show that tumor cells with stem cell-like or progenitor-like properties can be isolated from a wide range of histological sub-types and grades of pediatric brain tumors. They suggest that cellular mechanisms fueling tumor development differ between adult and pediatric brain tumors.
Collapse
Affiliation(s)
- Cécile Thirant
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Barbara Bessette
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Pascale Varlet
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
| | - Stéphanie Puget
- Pediatric Neurosurgical Department. Hospital Necker, University Paris Descartes, Paris, France
- CNRS UMR 8203, Vectorology and Anticancer Therapeutics, Gustave Roussy Cancer Institute, Villejuif, France
| | | | | | - Jeanne-Marie Studler
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Collège de France, Paris, France
| | - David Carlos Silvestre
- Laboratoire de Radiopathologie UMR 967, CEA-INSERM-Université Paris VII, Fontenay-aux-Roses, France
| | - Aurélie Susini
- Laboratoire d'Oncogénétique - INSERM U735, Institut Curie/Hôpital René Huguenin, St-Cloud, France
| | - Chiara Villa
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
| | - Catherine Miquel
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
| | - Alexandra Bogeas
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Anne-Laure Surena
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Amélia Dias-Morais
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Nadine Léonard
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
| | - Françoise Pflumio
- Laboratoire des Cellules Souches Hématopoïétiques et Leucémiques, UMR U967, CEA-INSERM-Université Paris VII, Fontenay-aux-Roses, France
| | - Ivan Bièche
- Laboratoire d'Oncogénétique - INSERM U735, Institut Curie/Hôpital René Huguenin, St-Cloud, France
| | - François D. Boussin
- Laboratoire de Radiopathologie UMR 967, CEA-INSERM-Université Paris VII, Fontenay-aux-Roses, France
| | - Christian Sainte-Rose
- Pediatric Neurosurgical Department. Hospital Necker, University Paris Descartes, Paris, France
| | - Jacques Grill
- CNRS UMR 8203, Vectorology and Anticancer Therapeutics, Gustave Roussy Cancer Institute, Villejuif, France
| | - Catherine Daumas-Duport
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
| | - Hervé Chneiweiss
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
| | - Marie-Pierre Junier
- Inserm, UMR894, Team Glial Plasticity, University Paris Descartes, Paris, France
- Department of Neuropathology, Hospital Sainte-Anne, Paris, France
- * E-mail:
| |
Collapse
|