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Braidotti S, Curci D, Zampieri D, Covino C, Zanon D, Maximova N, Sala R. Iron Bioavailability in the Extracellular Environment Is More Relevant Than the Intracellular One in Viability and Gene Expression: A Lesson from Oligodendroglioma Cells. Biomedicines 2023; 11:2940. [PMID: 38001941 PMCID: PMC10668974 DOI: 10.3390/biomedicines11112940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/24/2023] [Accepted: 10/29/2023] [Indexed: 11/26/2023] Open
Abstract
Oligodendroglioma (OG) is a brain tumor that contributes to <1% of brain tumor diagnoses in the pediatric population. Unfortunately, pediatric OG remains without definitive molecular characteristics to aid in diagnosis, and little is known about the tumor microenvironment. Tumor cells' metabolism and proliferation rate are generally higher than those of healthy cells, so their iron demand is also significantly higher. This consideration underlines the great importance of iron for tumor development and progression. In this context, this study aims to evaluate the effect of iron in a cellular in vitro model of human oligodendroglioma brain tumor. Cell morphology, the effect of siderotic medium on cell growth, iron uptake, and the expression of iron-metabolism-related genes were evaluated via optic microscopy, ICP-MS, confocal microscopy, and real-time PCR, respectively. This study underlines the great importance of iron for tumor development and progression and also the possibility of reducing the available iron concentration to determine an antiproliferative effect on OG. Therefore, every attempt can be promising to defeat OG for which there are currently no long-term curative therapies.
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Affiliation(s)
- Stefania Braidotti
- Department of Pediatrics, Institute for Maternal and Child Health-IRCCS Burlo Garofolo, 34137 Trieste, Italy;
| | - Debora Curci
- Advanced Translational Diagnostic Laboratory, Institute for Maternal and Child Health-IRCCS Burlo Garofolo, 34137 Trieste, Italy;
| | - Daniele Zampieri
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy;
| | - Cesare Covino
- Advanced Light and Electron Microscopy Imaging Centre (ALEMBIC), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Davide Zanon
- Pharmacy and Clinical Pharmacology Department, Institute for Maternal and Child Health-IRCCS Burlo Garofolo, 34137 Trieste, Italy;
| | - Natalia Maximova
- Department of Pediatrics, Institute for Maternal and Child Health-IRCCS Burlo Garofolo, 34137 Trieste, Italy;
| | - Roberto Sala
- Department of Medicine and Surgery, University of Parma, 43121 Parma, Italy;
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Frazão L, do Carmo Martins M, Nunes VM, Pimentel J, Faria C, Miguéns J, Sagarribay A, Matos M, Salgado D, Nunes S, Mafra M, Roque L. BRAF V600E mutation and 9p21: CDKN2A/B and MTAP co-deletions - Markers in the clinical stratification of pediatric gliomas. BMC Cancer 2018; 18:1259. [PMID: 30558563 PMCID: PMC6296141 DOI: 10.1186/s12885-018-5120-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 11/21/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Genetic alterations in pediatric primary brain tumors can be used as diagnostic and prognostic markers and are the basis for the development of new target therapies that, ideally, would be associated with lower mortality and morbidity. This study evaluates the incidence and interplay of the presence of BRAF V600E mutation and chromosomal 9p21 deletions in a series of 100 pediatric gliomas, aiming to determine the role of these alterations in recurrence and malignant transformation, and to verify if they could be used in the clinical set for stratifying patients for tailored therapies and surveillance. METHODS Sanger sequencing was used for the assessment of BRAF mutations at exon 15 and Fluorescent In Situ Hybridization (FISH) with BAC: RP11-14192 for the detection of 9p21 alterations. Expression levels of the CDKN2A and MTAP by real-time PCR were evaluated in cases with 9p21 deletions. Statistical analysis of genetic and clinical data was performed using Graph Pad Prism 5 and SPSS Statistics 24 software. RESULTS In our cohort it was observed that 7 /78 (8,9%) of the low-grade tumors recurred and 2 (2,6%) showed malignant transformation. BRAF V600E mutations were detected in 15 cases. No statistically significant correlations were found between the presence of BRAF V600E mutation and patient's morphologic or clinical features. Deletions at 9p21 abrogating the CDKN2A/B and MTAP loci were rare in grade I gliomas (12.2%, p = 0.0178) but frequent in grade IV gliomas (62.5%, p = 0.0087). Moreover it was found that deletions at these loci were correlated with a shorter overall survival (p = 0.011) and a shorter progression-free survival (p = 0.016). CONCLUSIONS It was demonstrated that in these tumors BRAF V600E mutated and that CDKN2A/B MTAP co-deletions may be used for stratifying patients for a stricter surveillance. The Investigating and defining if glial tumors with CDKN2A/B and MTAP homozygous loss may be vulnerable to new forms of therapy, namely those affecting the methionine salvage pathway, was proven to be of importance.
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Affiliation(s)
- Laura Frazão
- Unidade de Investigação em Patobiologia Molecular (UIPM) – IPOFG Cytogenetic Laboratory, Portuguese Cancer Institute, R. Professor Lima Basto, 1099-023 Lisbon, Portugal
| | - Maria do Carmo Martins
- Unidade de Investigação em Patobiologia Molecular (UIPM) – IPOFG Cytogenetic Laboratory, Portuguese Cancer Institute, R. Professor Lima Basto, 1099-023 Lisbon, Portugal
| | - Vasco Moura Nunes
- Unidade de Investigação em Patobiologia Molecular (UIPM) – IPOFG Cytogenetic Laboratory, Portuguese Cancer Institute, R. Professor Lima Basto, 1099-023 Lisbon, Portugal
| | - José Pimentel
- Laboratory of Neuropathology, Department of Neurology, Hospital de Santa Maria (CHLN; EPE), Institute of Molecular Medicine, Medicine Faculty of the Lisbon University, Lisbon, Portugal
| | - Claudia Faria
- Neurosurgery Department, Hospital de Santa Maria, Lisbon (CHLN; EPE) Institute of Molecular Medicine, Medicine Faculty of the Lisbon University, Lisbon, Portugal
| | - José Miguéns
- Neurosurgery Department, Hospital de Santa Maria, Lisbon (CHLN; EPE) Institute of Molecular Medicine, Medicine Faculty of the Lisbon University, Lisbon, Portugal
| | - Amets Sagarribay
- Neurosurgery Department, Hospital Dona Estefânia, (CHLC; EPE), Lisbon, Portugal
| | - Mário Matos
- Neurosurgery Department, Hospital Dona Estefânia, (CHLC; EPE), Lisbon, Portugal
| | - Duarte Salgado
- Pediatric Neuro-Oncology Unit, IPOFG, Portuguese Cancer Institute, Lisbon, Portugal
| | - Sofia Nunes
- Pediatric Neuro-Oncology Unit, IPOFG, Portuguese Cancer Institute, Lisbon, Portugal
| | - Manuela Mafra
- Department of Pathology, IPOFG, Portuguese Cancer Institute, Lisbon, Portugal
| | - Lúcia Roque
- Unidade de Investigação em Patobiologia Molecular (UIPM) – IPOFG Cytogenetic Laboratory, Portuguese Cancer Institute, R. Professor Lima Basto, 1099-023 Lisbon, Portugal
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Yamanaka R, Hayano A, Kanayama T. Radiation-induced gliomas: a comprehensive review and meta-analysis. Neurosurg Rev 2016; 41:719-731. [DOI: 10.1007/s10143-016-0786-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/25/2016] [Accepted: 09/19/2016] [Indexed: 10/20/2022]
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Yamanaka R, Hayano A. Secondary glioma following acute lymphocytic leukemia: therapeutic implications. Neurosurg Rev 2016; 40:549-557. [DOI: 10.1007/s10143-016-0733-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/16/2016] [Accepted: 03/13/2016] [Indexed: 10/21/2022]
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Yoon SI, Park KJ, Park DH, Kang SH, Park JY, Chung YG. World Health Organization Grade II Oligodendroglioma Occurring after Successful Treatment for Childhood Acute Lymphoblastic Leukemia. Brain Tumor Res Treat 2016; 4:145-149. [PMID: 27867928 PMCID: PMC5114188 DOI: 10.14791/btrt.2016.4.2.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/14/2016] [Accepted: 09/22/2016] [Indexed: 11/20/2022] Open
Abstract
When treating childhood acute lymphoblastic leukemia (ALL), secondary neoplasms are a significant long term problem. Radiation is generally accepted to be a major cause of the development of secondary neoplasms. Following treatment for ALL, a variety of secondary tumors, including brain tumors, hematologic malignancies, sarcomas, thyroid cancers, and skin cancers have been reported. However, oligodendroglioma as a secondary neoplasm is extremely rare. Herein we present a case of secondary oligodendroglioma occurring 13 years after the end of ALL treatment.
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Affiliation(s)
- Sang-In Yoon
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Kyung-Jae Park
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Dong-Hyuk Park
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Shin-Hyuk Kang
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Jung-Yul Park
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Yong-Gu Chung
- Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea
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