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Sakaguchi M, Horie M, Ito Y, Tanaka S, Mizuguchi K, Ikeda H, Kiyokawa E, Nakada M, Maeda D. Comprehensive genomic analysis reveals clonal origin and subtype-specific evolution in a case of sporadic multiple meningiomas. Brain Tumor Pathol 2024:10.1007/s10014-024-00486-9. [PMID: 39066986 DOI: 10.1007/s10014-024-00486-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 06/30/2024] [Indexed: 07/30/2024]
Abstract
Meningioma is the most common primary intracranial tumor in adults, with up to 10% manifesting as multiple tumors. Data on the genomic and molecular changes in sporadic multiple meningiomas are scarce, leading to ongoing debates regarding their evolutionary processes. A comprehensive genetic analysis of a large number of lesions, including precursor lesions, is necessary to explore these two possible origins: clonal and independent. In the present study, we performed whole-exome sequencing and analyzed somatic single-nucleotide variants (SNVs), insertions/deletions (INDELs), and copy number alterations (CNAs) in a patient with sporadic multiple meningiomas. These meningiomas included two mass-forming lesions of different histological subtypes (transitional and chordoid) and two small meningothelial nests. Genetic analysis revealed CNAs on chromosomes 22q and Y as common abnormalities in the two largest tumors. Furthermore, we identified SNV/INDELs unique to each focus, with NF2 mutation prevalent in the transitional meningioma and CREBBP mutation in the chordoid meningioma. Loss of chromosome 22 was detected in two small meningothelial nests. Overall, we elucidated the clonal origin and subtype-specific evolution of multiple meningiomas in this case. CNAs may serve as the initial driving event in meningioma development.
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Affiliation(s)
- Maki Sakaguchi
- Department of Molecular and Cellular Pathology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Masafumi Horie
- Department of Molecular and Cellular Pathology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
| | - Yukinobu Ito
- Department of Molecular and Cellular Pathology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shingo Tanaka
- Department of Neurosurgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Etsuko Kiyokawa
- Department of Oncologic Pathology, Kanazawa Medical University, Kanazawa, Ishikawa, Japan
| | - Mitsutoshi Nakada
- Department of Neurosurgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Daichi Maeda
- Department of Molecular and Cellular Pathology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
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Tomanelli M, Florio T, Vargas GC, Pagano A, Modesto P. Domestic Animal Models of Central Nervous System Tumors: Focus on Meningiomas. Life (Basel) 2023; 13:2284. [PMID: 38137885 PMCID: PMC10744527 DOI: 10.3390/life13122284] [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: 10/13/2023] [Accepted: 11/09/2023] [Indexed: 12/24/2023] Open
Abstract
Intracranial primary tumors (IPTs) are aggressive forms of malignancies that cause high mortality in both humans and domestic animals. Meningiomas are frequent adult IPTs in humans, dogs, and cats, and both benign and malignant forms cause a decrease in life quality and survival. Surgery is the primary therapeutic approach to treat meningiomas, but, in many cases, it is not resolutive. The chemotherapy and targeted therapy used to treat meningiomas also display low efficacy and many side effects. Therefore, it is essential to find novel pharmacological approaches to increase the spectrum of therapeutic options for meningiomas. This review analyzes the similarities between human and domestic animal (dogs and cats) meningiomas by evaluating the molecular and histological characteristics, diagnosis criteria, and treatment options and highlighting possible research areas to identify novel targets and pharmacological approaches, which are useful for the diagnosis and therapy of this neoplasia to be used in human and veterinary medicine.
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Affiliation(s)
- Michele Tomanelli
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
| | - Tullio Florio
- Pharmacology Section, Department of Internal Medicine (DIMI), University of Genova, 16126 Genova, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Gabriela Coronel Vargas
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
| | - Aldo Pagano
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (G.C.V.); (A.P.)
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Paola Modesto
- National Reference Center for Veterinary and Comparative Oncology, Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, 10154 Torino, Italy
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3
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Sun S, Ren L, Miao Z, Hua L, Wang D, Deng J, Chen J, Liu N, Gong Y. Application of MRI-Based Radiomics in Preoperative Prediction of NF2 Alteration in Intracranial Meningiomas. Front Oncol 2022; 12:879528. [PMID: 36267986 PMCID: PMC9578175 DOI: 10.3389/fonc.2022.879528] [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: 02/19/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
PurposeThis study aimed to investigate the feasibility of predicting NF2 mutation status based on the MR radiomic analysis in patients with intracranial meningioma.MethodsThis retrospective study included 105 patients with meningiomas, including 60 NF2-mutant samples and 45 wild-type samples. Radiomic features were extracted from magnetic resonance imaging scans, including T1-weighted, T2-weighted, and contrast T1-weighted images. Student’s t-test and LASSO regression were performed to select the radiomic features. All patients were randomly divided into training and validation cohorts in a 7:3 ratio. Five linear models (RF, SVM, LR, KNN, and xgboost) were trained to predict the NF2 mutational status. Receiver operating characteristic curve and precision-recall analyses were used to evaluate the model performance. Student’s t-tests were then used to compare the posterior probabilities of NF2 mut/loss prediction for patients with different NF2 statuses.ResultsNine features had nonzero coefficients in the LASSO regression model. No significant differences was observed in the clinical features. Nine features showed significant differences in patients with different NF2 statuses. Among all machine learning algorithms, SVM showed the best performance. The area under curve and accuracy of the predictive model were 0.85; the F1-score of the precision-recall curve was 0.80. The model risk was assessed by plotting calibration curves. The p-value for the H-L goodness of fit test was 0.411 (p> 0.05), which indicated that the difference between the obtained model and the perfect model was statistically insignificant. The AUC of our model in external validation was 0.83.ConclusionA combination of radiomic analysis and machine learning showed potential clinical utility in the prediction of preoperative NF2 status. These findings could aid in developing customized neurosurgery plans and meningioma management strategies before postoperative pathology.
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Affiliation(s)
- Shuchen Sun
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Leihao Ren
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Zong Miao
- Department of Neurosurgery, Changhai Hospital, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Lingyang Hua
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Daijun Wang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Jiaojiao Deng
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Jiawei Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Ning Liu
- Department of Neurosurgery, Changhai Hospital, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Ye Gong
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Neurosurgery, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Department of Critical Care Medicine, Huashan Hospital, Fudan University, Shanghai, China
- *Correspondence: Ye Gong,
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4
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Nassiri F, Wang JZ, Singh O, Karimi S, Dalcourt T, Ijad N, Pirouzmand N, Ng HK, Saladino A, Pollo B, Dimeco F, Yip S, Gao A, Aldape KD, Zadeh G. Loss of H3K27me3 in meningiomas. Neuro Oncol 2021; 23:1282-1291. [PMID: 33970242 DOI: 10.1093/neuonc/noab036] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND There is a critical need for objective and reliable biomarkers of outcome in meningiomas beyond WHO classification. Loss of H3K27me3 has been reported as a prognostically unfavorable alteration in meningiomas. We sought to independently evaluate the reproducibility and prognostic value of H3K27me3 loss by immunohistochemistry (IHC) in a multicenter study. METHODS IHC staining for H3K27me3 and analyses of whole slides from 181 meningiomas across three centers was performed. Staining was analyzed by dichotomization into loss and retained immunoreactivity, and using a 3-tiered scoring system in 151 cases with clear staining. Associations of grouping with outcome were performed using Kaplan-Meier survival estimates. RESULTS A total of 21 of 151 tumors (13.9%) demonstrated complete loss of H3K27me3 staining in tumor with retained endothelial staining. Overall, loss of H3K27me3 portended a worse outcome with shorter times to recurrence in our cohort, particularly for WHO grade 2 tumors which were enriched in our study. There were no differences in recurrence-free survival (RFS) for WHO grade 3 patients with retained vs loss of H3K27me3. Scoring by a 3-tiered system did not add further insights into the prognostic value of this H3K27me3 loss. Overall, loss of H3K27me3 was not independently associated with RFS after controlling for WHO grade, extent of resection, sex, age, and recurrence status of tumor on multivariable Cox regression analysis. CONCLUSIONS Loss of H3K27me3 identifies a subset of WHO grade 2 and possibly WHO grade 1 meningiomas with increased recurrence risk. Pooled analyses of a larger cohort of samples with standardized reporting of clinical definitions and staining patterns are warranted.
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Affiliation(s)
- Farshad Nassiri
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada.,Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Justin Z Wang
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada.,Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Olivia Singh
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Shirin Karimi
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Tatyana Dalcourt
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Nazanin Ijad
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Neda Pirouzmand
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Ho-Keung Ng
- Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin N.T., Hong Kong SAR, People's Republic of China
| | - Andrea Saladino
- Unit of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Bianca Pollo
- Unit of Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Francesco Dimeco
- Unit of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Stephen Yip
- Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrew Gao
- Department of Pathology & Laboratory Medicine, University Health Network, Toronto, Ontario, Canada
| | - Kenneth D Aldape
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA
| | - Gelareh Zadeh
- MacFeeters Hamilton Neuro-Oncology Program, Princess Margaret Cancer Centre, University Health Network and University of Toronto, Toronto, Ontario, Canada.,Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
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5
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Abstract
Comprehensive genomic studies of meningioma have offered important insights about the molecular mechanisms underlying this common brain tumor. The use of next-generation sequencing techniques has identified driver mutations in approximately 80% of benign sporadic lesions, as well as epigenetic, regulatory, and copy number events that are associated with formation and disease progression. The events described to date fall into five mutually exclusive molecular subgroups that correlate with tumor location and embryological origin. Importantly, these subgroups also carry implications for clinical management, as they are predictive of histologic subtype and the likelihood of progression. Further work is necessary to understand the molecular mechanisms by which identified mutations drive tumorigenesis as well as the genomic pathways that transform benign lesions into malignancies. Progress made during the past decade has opened the door to potential molecular therapies as well as integration of meningioma genotyping data into clinical management decisions. Several pharmacologic trials are currently underway that leverage recent genomic findings to target established oncogenic pathways in refractory tumors. With the combined efforts of physicians and basic science investigators, the clinical management of meningioma will continue to make important strides in the coming years.
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6
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Havranek B, Islam SM. Prediction and evaluation of deleterious and disease causing non-synonymous SNPs (nsSNPs) in human NF2 gene responsible for neurofibromatosis type 2 (NF2). J Biomol Struct Dyn 2020; 39:7044-7055. [PMID: 32787631 DOI: 10.1080/07391102.2020.1805018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The majority of genetic variations in the human genome that lead to variety of different diseases are caused by non-synonymous single nucleotide polymorphisms (nsSNPs). Neurofibromatosis type 2 (NF2) is a deadly disease caused by nsSNPs in the NF2 gene that encodes for a protein called merlin. This study used various in silico methods, SIFT, Polyphen-2, PhD-SNP and MutPred, to investigate the pathogenic effect of 14 nsSNPs in the merlin FERM domain. The G197C and L234R mutations were found to be two deleterious and disease mutations associated with the mild and severe forms of NF2, respectively. Molecular dynamics (MD) simulations were conducted to understand the stability, structure and dynamics of these mutations. Both mutant structures experienced larger flexibility compared to the wildtype. The L234R mutant suffered from more prominent structural instability, which may help to explain why it is associated with the more severe form of NF2. The intramolecular hydrogen bonding in L234R mutation decreased from the wildtype, while intermolecular hydrogen bonding of L234R mutation with solvent greatly increased. The native contacts were also found to be important. Protein-protein docking revealed that L234R mutation decreased the binding complementarity and binding affinity of LATS2 to merlin, which may have an impact on merlin's ability to regulate the Hippo signaling pathway. The calculated binding affinity of the LATS2 to L234R mutant and wildtype merlin protein is found to be 21.73 and -11 kcal/mol, respectively. The binding affinity of the wildtype merlin agreed very well with the experimental value, -8 kcal/mol.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Brandon Havranek
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Shahidul M Islam
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, USA
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7
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Lee S, Karas PJ, Hadley CC, Bayley V JC, Khan AB, Jalali A, Sweeney AD, Klisch TJ, Patel AJ. The Role of Merlin/NF2 Loss in Meningioma Biology. Cancers (Basel) 2019; 11:E1633. [PMID: 31652973 PMCID: PMC6893739 DOI: 10.3390/cancers11111633] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Accepted: 10/19/2019] [Indexed: 02/06/2023] Open
Abstract
Mutations in the neurofibromin 2 (NF2) gene were among the first genetic alterations implicated in meningioma tumorigenesis, based on analysis of neurofibromatosis type 2 (NF2) patients who not only develop vestibular schwannomas but later have a high incidence of meningiomas. The NF2 gene product, merlin, is a tumor suppressor that is thought to link the actin cytoskeleton with plasma membrane proteins and mediate contact-dependent inhibition of proliferation. However, the early recognition of the crucial role of NF2 mutations in the pathogenesis of the majority of meningiomas has not yet translated into useful clinical insights, due to the complexity of merlin's many interacting partners and signaling pathways. Next-generation sequencing studies and increasingly sophisticated NF2-deletion-based in vitro and in vivo models have helped elucidate the consequences of merlin loss in meningioma pathogenesis. In this review, we seek to summarize recent findings and provide future directions toward potential therapeutics for this tumor.
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Affiliation(s)
- Sungho Lee
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Patrick J Karas
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Caroline C Hadley
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - James C Bayley V
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - A Basit Khan
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Ali Jalali
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Alex D Sweeney
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Tiemo J Klisch
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX 77030, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Akash J Patel
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, TX 77030, USA.
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX 77030, USA.
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8
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Nigim F, Kiyokawa J, Gurtner A, Kawamura Y, Hua L, Kasper EM, Brastianos PK, Cahill DP, Rabkin SD, Martuza RL, Carbonell WS, Wakimoto H. A Monoclonal Antibody Against β1 Integrin Inhibits Proliferation and Increases Survival in an Orthotopic Model of High-Grade Meningioma. Target Oncol 2019; 14:479-489. [DOI: 10.1007/s11523-019-00654-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Zhang X, Tang JZ, Vergara IA, Zhang Y, Szeto P, Yang L, Mintoff C, Colebatch A, McIntosh L, Mitchell KA, Shaw E, Rizos H, Long GV, Hayward N, McArthur GA, Papenfuss AT, Harvey KF, Shackleton M. Somatic Hypermutation of the YAP Oncogene in a Human Cutaneous Melanoma. Mol Cancer Res 2019; 17:1435-1449. [PMID: 30833299 DOI: 10.1158/1541-7786.mcr-18-0407] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 10/25/2018] [Accepted: 02/28/2019] [Indexed: 11/16/2022]
Abstract
Melanoma is usually driven by mutations in BRAF or NRAS, which trigger hyperactivation of MAPK signaling. However, MAPK-targeted therapies are not sustainably effective in most patients. Accordingly, characterizing mechanisms that co-operatively drive melanoma progression is key to improving patient outcomes. One possible mechanism is the Hippo signaling pathway, which regulates cancer progression via its central oncoproteins YAP and TAZ, although is thought to be only rarely affected by direct mutation. As YAP hyperactivation occurs in uveal melanoma, we investigated this oncogene in cutaneous melanoma. YAP protein expression was elevated in most benign nevi and primary cutaneous melanomas but present at only very low levels in normal melanocytes. In patient-derived xenografts and melanoma cell lines, we observed variable reliance of cell viability on Hippo pathway signaling that was independent of TAZ activity and also of classical melanoma driver mutations such as BRAF and NRAS. Finally, in genotyping studies of melanoma, we observed the first ever hyperactivating YAP mutations in a human cancer, manifest as seven distinct missense point mutations that caused serine to alanine transpositions. Strikingly, these mutate four serine residues known to be targeted by the Hippo pathway and we show that they lead to hyperactivation of YAP. IMPLICATIONS: Our studies highlight the YAP oncoprotein as a potential therapeutic target in select subgroups of melanoma patients, although successful treatment with anti-YAP therapies will depend on identification of biomarkers additional to YAP protein expression.
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Affiliation(s)
- Xiaomeng Zhang
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Jian Zhong Tang
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Olivia Newton John Cancer Research Institute & School of Cancer Medicine, La Trobe University, Heidelberg, Victoria, Australia
| | | | - Youfang Zhang
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Alfred Health, Melbourne, Victoria, Australia
| | - Pacman Szeto
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Alfred Health, Melbourne, Victoria, Australia
| | - Lie Yang
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- School of Medicine, Tsinghua University, Beijing, China
| | | | | | - Lachlan McIntosh
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- The Walter and Eliza Hall Institute, Melbourne, Victoria, Australia
- Department of Mathematics and Statistics, University of Melbourne, Melbourne, Victoria, Australia
| | | | - Evangeline Shaw
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Helen Rizos
- Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
- Melanoma Institute of Australia, Sydney, NSW, Australia
| | | | - Nicholas Hayward
- Melanoma Institute of Australia, Sydney, NSW, Australia
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Grant A McArthur
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Anthony T Papenfuss
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- The Walter and Eliza Hall Institute, Melbourne, Victoria, Australia
- Department of Mathematics and Statistics, University of Melbourne, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
| | - Kieran F Harvey
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia
- Department of Pathology, University of Melbourne, Melbourne, Victoria, Australia
| | - Mark Shackleton
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.
- Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Alfred Health, Melbourne, Victoria, Australia
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10
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Yeung YT, Guerrero-Castilla A, Cano M, Muñoz MF, Ayala A, Argüelles S. Dysregulation of the Hippo pathway signaling in aging and cancer. Pharmacol Res 2019; 143:151-165. [PMID: 30910741 DOI: 10.1016/j.phrs.2019.03.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 02/04/2019] [Accepted: 03/21/2019] [Indexed: 02/06/2023]
Abstract
Human beings are facing emerging degenerative and cancer diseases, in large part, as a consequence of increased life expectancy. In the near future, researchers will have to put even more effort into fighting these new challenges, one of which will be prevention of cancer while continuing to improve the aging process through this increased life expectancy. In the last few decades, relevance of the Hippo pathway on cancer has become an important study since it is a major regulator of organ size control and proliferation. However, its deregulation can induce tumors throughout the body by regulating cell proliferation, disrupting cell polarity, releasing YAP and TAZ from the Scribble complexes and facilitating survival gene expression via activation of TEAD transcription factors. This pathway is also involved in some of the most important mechanisms that control the aging processes, such as the AMP-activated protein kinase and sirtuin pathways, along with autophagy and oxidative stress response/antioxidant defense. This could be the link between two tightly connected processes that could open a broader range of targeted molecular therapies to fight aging and cancer. Therefore, available knowledge of the processes involved in the Hippo pathway during aging and cancer must necessarily be well understood.
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Affiliation(s)
- Yiu To Yeung
- China-US (Henan) Hormel Cancer Institute, Zhengzhou, China
| | | | - Mercedes Cano
- Department of Physiology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Mario F Muñoz
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Antonio Ayala
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Sandro Argüelles
- Department of Physiology, Faculty of Pharmacy, University of Seville, Seville, Spain.
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11
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Supartoto A, Sasongko MB, Respatika D, Mahayana IT, Pawiroranu S, Kusnanto H, Sakti DH, Nurlaila PS, Heriyanto DS, Haryana SM. Relationships Between Neurofibromatosis-2, Progesterone Receptor Expression, the Use of Exogenous Progesterone, and Risk of Orbitocranial Meningioma in Females. Front Oncol 2019; 8:651. [PMID: 30687635 PMCID: PMC6338020 DOI: 10.3389/fonc.2018.00651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 12/10/2018] [Indexed: 11/29/2022] Open
Abstract
Background: The pathogenesis of meningioma in females and its association with exogenous progesterone is remained unclear. This study was aimed to examine expression of Progesterone receptor (PR) and Neurofibromatosis-2 (NF2) and assess their relationships to history of exogenous progesterone use and risk of meningioma. Methods: Our study was a case-control study that involves 115 females, 40 cases who diagnosed with orbito-cranial meningioma and 75 controls of healthy, that has been presented in previous study. The demographic characteristics, reproductive factors, and history of progesterone use were obtained in–depth face-to-face interviews. PR and NF2 mRNA were assessed by real-time quantitative polymerase chain reaction (RT-qPCR) on serum specimens. Results: The mean age of participants in cases vs. controls were 46.6 ± 6.2 vs. 46.5 ± 7.45 (P = 0.969). The expression of PR and NF2 in cases was significantly lower than in controls. The longer duration of progesterone exposure was significantly associated with lower expression of PR and NF2. Significant association between lower expression of PR (OR 11.7; 95% CI 4.17–32.9; P < 0.001 comparing the lowest quartile vs. 3 highest quartile of PR) and NF2 (OR 4.23; 95% CI 1.85–9.67; P = 0.001 comparing the 2 lowest quartiles vs. 2 highest quartiles) with increased risk of meningioma were also reported. Conclusion: In this study we showed that the longer the exposure to exogenous progesterone, the lower the expression of PR and NF2 mRNA in the serum. Low expression of PR and NF2 were associated with higher risk of meningioma, suggesting that low PR expression and inactivation of NF2 might play a key role in progesterone-associated meningioma tumorigenesis and may be potential clinical marker for females at higher risk of meningioma.
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Affiliation(s)
- Agus Supartoto
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Muhammad Bayu Sasongko
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Datu Respatika
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Indra Tri Mahayana
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Suhardjo Pawiroranu
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Hari Kusnanto
- Department of Biostatistics Epidemiology and Population Health, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Dhimas Hari Sakti
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Prima Sugesty Nurlaila
- Department of Ophthalmology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada-Prof. Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Didik Setyo Heriyanto
- Department of Pathological Anatomy, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Sofia Mubarika Haryana
- Department of Histology and Cell Biology, Faculty of Medicine Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Osorio DS, Hu J, Mitchell C, Allen JC, Stanek J, Hagiwara M, Karajannis MA. Effect of lapatinib on meningioma growth in adults with neurofibromatosis type 2. J Neurooncol 2018; 139:749-755. [PMID: 29948766 DOI: 10.1007/s11060-018-2922-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 06/02/2018] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Epidermal growth factor receptors EGFR and ErbB2 are overexpressed in schwannomas and meningiomas. Preclinical and clinical data indicate that lapatinib, an EGFR/ErbB2 inhibitor, has antitumor activity against vestibular schwannomas in neurofibromatosis type 2 (NF2) patients. Its antitumor activity against meningiomas, however, is unknown. METHODS We conducted a retrospective review of patients with NF2 and progressive vestibular schwannomas treated on a phase 2 clinical trial with lapatinib (NCT00973739). We included patients with at least one volumetrically measurable meningioma (> 0.5 cm3) who received at least five 28-day courses of treatment. Patients received lapatinib 1500 mg daily. Meningioma response was assessed using 3-dimensional MRI volumetrics. Progressive meningioma growth and response were defined as + 20 and - 20% change in tumor volume from baseline, respectively. Off-treatment was defined as any period > 5 months without lapatinib. RESULTS Eight patients (ages: 20-58 years) who met criteria had 17 evaluable meningiomas with a combined volume of 61.35 cc at baseline, 61.17 cc during treatment, and 108.86 cc (+ 77.44% change) off-treatment, p = 0.0033. Median time on-treatment and off-treatment was 15.5 and 16.7 months, respectively. On-treatment mean and median annualized growth rates were 10.67 and 1.32%, respectively. Off-treatment mean and median annualized growth rates were 20.05 and 10.42%, respectively. The best volumetric response was - 26.1% after 23 months on lapatinib. Two tumors increased > 20% volumetrically on-treatment, compared to eight tumors off-treatment. CONCLUSIONS These data suggest that lapatinib may have growth-inhibitory effects on meningiomas in NF2 patients, and support prospective studies of lapatinib for NF2 patients with progressive meningiomas.
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Affiliation(s)
- Diana S Osorio
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - Jessica Hu
- Division of Neuroradiology, Department of Radiology, NYU Langone Health, New York, NY, USA
| | - Carole Mitchell
- Department of Pediatrics, NYU Langone Health, New York, NY, USA
| | - Jeffrey C Allen
- Department of Pediatrics, NYU Langone Health, New York, NY, USA
| | - Joseph Stanek
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, USA
| | - Mari Hagiwara
- Division of Neuroradiology, Department of Radiology, NYU Langone Health, New York, NY, USA
| | - Matthias A Karajannis
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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13
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Dai J, Ma Y, Chu S, Le N, Cao J, Wang Y. Identification of key genes and pathways in meningioma by bioinformatics analysis. Oncol Lett 2018; 15:8245-8252. [PMID: 29805558 PMCID: PMC5950024 DOI: 10.3892/ol.2018.8376] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 11/23/2017] [Indexed: 12/12/2022] Open
Abstract
Meningioma is the most frequently occurring type of brain tumor. The present study aimed to conduct a comprehensive bioinformatics analysis of key genes and relevant pathways involved in meningioma, and acquire further insight into the underlying molecular mechanisms. Initially, differentially expressed genes (DEGs) in 47 meningioma samples as compared with 4 normal meninges were identified. Subsequently, these DEGs were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses. In addition, a protein-protein interaction (PPI) network of the identified DEGs was constructed using the Search Tool for the Retrieval of Interacting Genes and visualized using Cytoscape. In total, 1,683 DEGs were identified, including 66 upregulated and 1,617 downregulated genes. The GO analysis results revealed that the DEGs were significantly associated with the ‘protein binding’, ‘cytoplasm’, ‘extracellular matrix (ECM) organization’ and ‘cell adhesion’ terms. The KEGG analysis results demonstrated the significant pathways included ‘AGE-RAGE signaling pathway in diabetic complications’, ‘PI3K-Akt signaling pathway’, ‘ECM-receptor interaction’ and ‘cell adhesion molecules’. The top five hub genes obtained from the PPI network were JUN, PIK3R1, FOS, AGT and MYC, and the most enriched KEGG pathways associated with the four obtained modules were ‘chemokine signaling pathway’, ‘cytokine-cytokine receptor interaction’, ‘allograft rejection’, and ‘complement and coagulation cascades’. In conclusion, bioinformatics analysis identified a number of potential biomarkers and relevant pathways that may represent key mechanisms involved in the development and progression of meningioma. However, these findings require verification in future experimental studies.
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Affiliation(s)
- Junxi Dai
- Department of Neurosurgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, P.R. China
| | - Yanbin Ma
- Department of Neurosurgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, P.R. China
| | - Shenghua Chu
- Department of Neurosurgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, P.R. China
| | - Nanyang Le
- Department of Neurosurgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, P.R. China
| | - Jun Cao
- Department of Neurosurgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, P.R. China
| | - Yang Wang
- Department of Emergency, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200082, P.R. China
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14
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Genetic/molecular alterations of meningiomas and the signaling pathways targeted. Oncotarget 2016; 6:10671-88. [PMID: 25965831 PMCID: PMC4484411 DOI: 10.18632/oncotarget.3870] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 04/04/2015] [Indexed: 01/10/2023] Open
Abstract
Meningiomas are usually considered to be benign central nervous system tumors; however, they show heterogenous clinical, histolopathological and cytogenetic features associated with a variable outcome. In recent years important advances have been achieved in the identification of the genetic/molecular alterations of meningiomas and the signaling pathways involved. Thus, monosomy 22, which is often associated with mutations of the NF2 gene, has emerged as the most frequent alteration of meningiomas; in addition, several other genes (e.g., AKT1, KLF4, TRAF7, SMO) and chromosomes have been found to be recurrently altered often in association with more complex karyotypes and involvement of multiple signaling pathways. Here we review the current knowledge about the most relevant genes involved and the signaling pathways targeted by such alterations. In addition, we summarize those proposals that have been made so far for classification and prognostic stratification of meningiomas based on their genetic/genomic features.
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15
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Nigim F, Esaki SI, Hood M, Lelic N, James MF, Ramesh V, Stemmer-Rachamimov A, Cahill DP, Brastianos PK, Rabkin SD, Martuza RL, Wakimoto H. A new patient-derived orthotopic malignant meningioma model treated with oncolytic herpes simplex virus. Neuro Oncol 2016; 18:1278-87. [PMID: 26951380 DOI: 10.1093/neuonc/now031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/06/2016] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Higher-grade meningiomas (HGMs; World Health Organization grades II and III) pose a clinical problem due to high recurrence rates and the absence of effective therapy. Preclinical development of novel therapeutics requires a disease model that recapitulates the genotype and phenotype of patient HGM. Oncolytic herpes simplex virus (oHSV) has shown efficacy and safety in cancers in preclinical and clinical studies, but its utility for HGM has not been well characterized. METHODS Tumorsphere cultures and serial orthotopic xenografting in immunodeficient mice were used to establish a patient-derived HGM model. The model was pathologically and molecularly characterized by immunohistochemistry, western blot, and genomic DNA sequencing and compared with the patient tumor. Anti-HGM effects of oHSV G47Δ were assessed using cell viability and virus replication assays in vitro and animal survival analysis following intralesional injections of G47Δ. RESULTS We established a serially transplantable orthotopic malignant meningioma model, MN3, which was lethal within 3 months after tumorsphere implantation. MN3 xenografts exhibited the pathological hallmarks of malignant meningioma such as high Ki67 and vimentin expression. Both the patient tumor and xenografts were negative for neurofibromin 2 (merlin) and had the identical NF2 mutation. Oncolytic HSV G47Δ efficiently spread and killed MN3 cells, as well as other patient-derived HGM lines in vitro. Treatment with G47Δ significantly extended the survival of mice bearing subdural MN3 tumors. CONCLUSIONS We established a new patient-derived meningioma model that will enable the study of targeted therapeutic approaches for HGM. Based on these studies, it is reasonable to consider a clinical trial of G47Δ for HGM.
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Affiliation(s)
- Fares Nigim
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Shin-Ichi Esaki
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Michael Hood
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Nina Lelic
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Marianne F James
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Vijaya Ramesh
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Anat Stemmer-Rachamimov
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel P Cahill
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Priscilla K Brastianos
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Samuel D Rabkin
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Robert L Martuza
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Hiroaki Wakimoto
- Department of Neurosurgery (F.N., S.-i.E., M.H., N.L., D.P.C., S.D.R., R.L.M., H.W.), Center for Human Genetic Research (M.F.J., V.R.), Department of Neuropathology (A.S.-R.), Division of Neuro-Oncology (P.K.B.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Petrilli AM, Fernández-Valle C. Role of Merlin/NF2 inactivation in tumor biology. Oncogene 2016; 35:537-48. [PMID: 25893302 PMCID: PMC4615258 DOI: 10.1038/onc.2015.125] [Citation(s) in RCA: 274] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 02/20/2015] [Accepted: 03/16/2015] [Indexed: 01/13/2023]
Abstract
Merlin (Moesin-ezrin-radixin-like protein, also known as schwannomin) is a tumor suppressor protein encoded by the neurofibromatosis type 2 gene NF2. Loss of function mutations or deletions in NF2 cause neurofibromatosis type 2 (NF2), a multiple tumor forming disease of the nervous system. NF2 is characterized by the development of bilateral vestibular schwannomas. Patients with NF2 can also develop schwannomas on other cranial and peripheral nerves, as well as meningiomas and ependymomas. The only potential treatment is surgery/radiosurgery, which often results in loss of function of the involved nerve. There is an urgent need for chemotherapies that slow or eliminate tumors and prevent their formation in NF2 patients. Interestingly NF2 mutations and merlin inactivation also occur in spontaneous schwannomas and meningiomas, as well as other types of cancer including mesothelioma, glioma multiforme, breast, colorectal, skin, clear cell renal cell carcinoma, hepatic and prostate cancer. Except for malignant mesotheliomas, the role of NF2 mutation or inactivation has not received much attention in cancer, and NF2 might be relevant for prognosis and future chemotherapeutic approaches. This review discusses the influence of merlin loss of function in NF2-related tumors and common human cancers. We also discuss the NF2 gene status and merlin signaling pathways affected in the different tumor types and the molecular mechanisms that lead to tumorigenesis, progression and pharmacological resistance.
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Affiliation(s)
- Alejandra M. Petrilli
- Department of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Cristina Fernández-Valle
- Department of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
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17
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Wang B, Cui Z, Zhong Z, Sun Y, Yang GY, Sun Q, Bian L. The role and regulatory mechanism of IL-1β on the methylation of the NF2 gene in benign meningiomas and leptomeninges. Mol Carcinog 2016; 55:2268-2277. [PMID: 26840621 DOI: 10.1002/mc.22467] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 11/01/2015] [Accepted: 01/08/2016] [Indexed: 12/12/2022]
Abstract
Methylation of the neurofibromatosis type 2 (NF2) gene in low-grade meningioma (WHO grade I) has crucial roles in tumorigenesis and development. Meningioma formation might also occur in the setting of an inflammatory microenvironment. However, the association between inflammation and the methylation of NF2 remains unclear. The present study investigates the role and regulatory mechanism of IL-1β, one of the most important pro-inflammatory cytokines, in the methylation of NF2 in benign meningioma. Three primary low-grade meningioma cells and leptomeningeal cells were cultured. CCK-8 and BrdU assays demonstrated that proliferation of meningioma/leptomeningeal cells treated with IL-1β occurred in a dose- and time-dependent manner. Methylation-specific PCR verified that IL-1β induced methylation of the NF2 promoter and decreased NF2/merlin expression in meningioma/leptomeningeal cells. Real-time PCR, western blotting, and immunofluorescence showed that IL-1β up-regulated DNMT1 in meningioma cells and DNMT1/3b in leptomeningeal cells but did not up-regulate DNMT3a. After co-treatment with the DNMT inhibitor 5-Aza-2'-deoxycytidine and DNMT siRNA, methylation of NF2 induced by IL-1β was attenuated and merlin expression was restored. Furthermore, we showed that DNMT1 in meningiomas and DNMT1/3b in leptomeninges were regulated via activation of the MAPK (p38, ERK, JNK) and NF-κB pathways. These results suggest that IL-1β induces methylation of NF2 by up-regulating DNMT1 in benign meningioma cells and DNMT1/3b in leptomeningeal cells via MAPK and NF-κB pathways. Therefore, NF2 methylation is a linker between IL-1β and tumor development, and DNMTs might be potential therapeutic targets in meningioma for regulating NF2 and inhibiting tumor development. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Baofeng Wang
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenwen Cui
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhihong Zhong
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhao Sun
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo-Yuan Yang
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China.,Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingfang Sun
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Neurosurgery, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liuguan Bian
- Department of Neurosurgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Hilton DA, Shivane A, Kirk L, Bassiri K, Enki DG, Hanemann CO. Activation of multiple growth factor signalling pathways is frequent in meningiomas. Neuropathology 2015; 36:250-61. [DOI: 10.1111/neup.12266] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/25/2015] [Accepted: 09/26/2015] [Indexed: 01/14/2023]
Affiliation(s)
- David A Hilton
- Department of Cellular and Anatomical Pathology; Derriford Hospital; Plymouth UK
| | - Aditya Shivane
- Department of Cellular and Anatomical Pathology; Derriford Hospital; Plymouth UK
| | - Leanne Kirk
- Department of Cellular and Anatomical Pathology; Derriford Hospital; Plymouth UK
| | - Kayleigh Bassiri
- Institute of Translational and Stratified Medicine; Plymouth University Peninsula Schools of Medicine & Dentistry; Plymouth UK
| | - Doyo G Enki
- Plymouth University Peninsula Schools of Medicine & Dentistry; Plymouth UK
| | - C Oliver Hanemann
- Institute of Translational and Stratified Medicine; Plymouth University Peninsula Schools of Medicine & Dentistry; Plymouth UK
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19
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Torres-Martín M, Kusak ME, Isla A, Burbano RR, Pinto GR, Melendez B, Castresana JS, Rey JA. Whole exome sequencing in a case of sporadic multiple meningioma reveals shared NF2, FAM109B, and TPRXL mutations, together with unique SMARCB1 alterations in a subset of tumor nodules. Cancer Genet 2015; 208:327-32. [DOI: 10.1016/j.cancergen.2015.03.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 03/19/2015] [Accepted: 03/30/2015] [Indexed: 12/19/2022]
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20
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Venza M, Visalli M, Beninati C, Catalano T, Biondo C, Teti D, Venza I. Involvement of epimutations in meningioma. Brain Tumor Pathol 2015; 32:163-8. [PMID: 25930103 DOI: 10.1007/s10014-015-0221-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/21/2015] [Indexed: 01/20/2023]
Abstract
Epimutations are heritable and reversible cell markers, which can influence cell function going beyond the effects of DNA mutations. They result from multiple and coordinated mechanisms able to modulate gene expression. Regarding the significance of epigenetics in meningioma, few and somehow contradictory results are available, although promising information has been obtained. Here we highlight the most recent advances about the impact of DNA methylation, histone modifications, and microRNA regulation on meningioma development as well as the interplay between genetic and epigenetic alterations. Data indicate that epigenetics can help to identify novel candidate genes for the management and treatment of meningioma.
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Affiliation(s)
- Mario Venza
- Department of Experimental Specialized Medical and Surgical and Odontostomatology Sciences, University of Messina, Messina, Italy
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21
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TORRES-MARTIN MIGUEL, LASSALETTA LUIS, ISLA ALBERTO, DE CAMPOS JOSEM, PINTO GIOVANNYR, BURBANO ROMMELR, CASTRESANA JAVIERS, MELENDEZ BARBARA, REY JUANA. Global expression profile in low grade meningiomas and schwannomas shows upregulation of PDGFD, CDH1 and SLIT2 compared to their healthy tissue. Oncol Rep 2014; 32:2327-34. [PMID: 25333347 PMCID: PMC4240498 DOI: 10.3892/or.2014.3526] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 08/26/2014] [Indexed: 12/20/2022] Open
Abstract
Schwannomas and grade I meningiomas are non‑metastatic neoplasms that share the common mutation of gene NF2. They usually appear in neurofibromatosis type 2 patients. Currently, there is no drug treatment available for both tumors, thus the use of wide expression technologies is crucial to identify therapeutic targets. Affymetrix Human Gene 1.0 ST was used to test global gene expression in 22 meningiomas, 31 schwannomas and, as non-tumoral controls, 3 healthy meningeal tissues, 8 non-tumoral nerves and 1 primary Schwann cell culture. A non-stringent P-value cut-off and fold change were used to establish deregulated genes. We identified a subset of genes that were upregulated in meningiomas and schwannomas when compared to their respectively healthy tissues, including PDGFD, CDH1 and SLIT2. Thus, these genes should be thoroughly studied as targets in a possible combined treatment.
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Affiliation(s)
- MIGUEL TORRES-MARTIN
- Molecular Neuro-Oncogenetics Laboratory, Research Unit, Hospital Universitario La Paz, IdiPAZ, Madrid, Spain
| | - LUIS LASSALETTA
- Department of Otolaryngology, Hospital Universitario La Paz, IdiPAZ, Madrid, Spain
| | - ALBERTO ISLA
- Department of Neurosurgery, Hospital Universitario La Paz, IdiPAZ, Madrid, Spain
| | | | - GIOVANNY R. PINTO
- Genetics and Molecular Biology Laboratory, Federal University of Piau, Parnaiba, Brazil
| | - ROMMEL R. BURBANO
- Human Cytogenetics Laboratory, Institute of Biological Sciences, Federal University of Para, Belem, Brazil
| | - JAVIER S. CASTRESANA
- Department of Biochemistry and Genetics, University of Navarra School of Sciences, Pamplona, Spain
| | - BARBARA MELENDEZ
- Molecular Pathology Research Unit, Virgen de la Salud Hospital, Toledo, Spain
| | - JUAN A. REY
- Molecular Neuro-Oncogenetics Laboratory, Research Unit, Hospital Universitario La Paz, IdiPAZ, Madrid, Spain
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Molecular biological determinations of meningioma progression and recurrence. PLoS One 2014; 9:e94987. [PMID: 24722350 PMCID: PMC3983248 DOI: 10.1371/journal.pone.0094987] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 03/20/2014] [Indexed: 01/11/2023] Open
Abstract
Meningiomas are tumors that arise from the coverings of the brain or spinal cord. 5% of the cases turn into malignant forms with aggressive clinical behavior and increased risk of tumor recurrence. One hundred and five patients with meningiomas were operated by open surgery. To investigate predictors of meningioma recurrence in total 124 samples of 105 patients were investigated by iFISH. Dual-probe hybridization was performed to access chromosomal alterations of chromosomes 1p-, 9p- and 22q. Additionally, methylation of TIMP3 and p16 was analyzed with MS-PCR. Of the 105 investigated tumors 59.1% (62/105) were WHO grade I, 33.3% (35/105) were WHO grade II and 7.7% (8/105) were anaplastic meningiomas (grade III), respectively. The histopathological data correlates with the recurrence rate of the investigated meningiomas. Hypermethylation of TIMP3 was detected in 13.3% of all meningiomas: 10.9% in WHO grade I meningiomas, 25.0% in grade II and 14.3% in grade III meningiomas, respectively. No correlation of TIMP3 hypermethylation with tumor recurrence or WHO grade (p = 0.2) was observed. Interestingly, deletion of 1p36 emerged as a significant predictor of shorter overall survival (log rank test, p<0.001), whereas TIMP3 promoter methylation had no significant effect on overall survival (log rank test, p = 0.799). The results of the current study support the finding that the deletion of chromosome 1p is an independent marker of meningioma recurrence and progression (p = 0.0097). Therefore the measurement of genetic aberrations in meningiomas allows in a combined histological approach a more precise assessment of the prognosis of meningiomas than histopathology alone.
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Abstract
This article will review the neuropathology of meningiomas. From the neurosurgeon's point of view, accurate neuropathological diagnosis will play an increasingly important role in clinical practice. Predicting an individual patient's prognosis will become ever more important with the advent of various new radiotherapeutic/radiosurgical modalities. Defining the optimal treatment for nonbenign meningiomas requires a robust and reproducible diagnosis. This review will therefore not only describe classical radiological and histopathological diagnosis, but will also focus on the emerging field of molecular neuropathology. Implementing these advances in our daily clinical routine holds the promise of improving diagnostic accuracy.
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Affiliation(s)
- Christian Hartmann
- Institut für Neuropathologie der Charité, Augustenburger Platz 1, 13353 Berlin, Germany.
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Tabernero M, Jara-Acevedo M, Nieto AB, Caballero AR, Otero A, Sousa P, Gonçalves J, Domingues PH, Orfao A. Association between mutation of the NF2 gene and monosomy 22 in menopausal women with sporadic meningiomas. BMC MEDICAL GENETICS 2013; 14:114. [PMID: 24171707 PMCID: PMC3818970 DOI: 10.1186/1471-2350-14-114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 10/28/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Meningioma was the first solid tumor shown to contain a recurrent genetic alteration e.g. monosomy 22/del(22q), NF2 being the most relevant gene involved. Although monosomy 22/del(22q) is present in half of all meningiomas, and meningiomas frequently carry NF2 mutations, no study has been reported so far in which both alterations are simultaneously assessed and correlated with the features of the disease. METHODS Here, we analyzed the frequency of both copy number changes involving chromosome 22 and NF2 mutations in 20 sporadic meningiomas using high-density SNP-arrays, interphase-FISH and PCR techniques. RESULTS Our results show a significant frequency of NF2 mutations (6/20 patients, 30%), most of which (5/6) had not been previously reported in sporadic meningiomas. NF2 mutations involved five different exons and led to a truncated protein (p.Leu163CysfsX46, p.Phe62LeufsX61, p.Asp281MetfsX15, p.Phe285LeufsX11, p.Gln389ArgfsX37) and an in frame deletion of Phe119. Interestingly, all NF2 mutated cases were menopausal women with monosomy 22 but not del(22q). CONCLUSIONS These results confirm and extend on previous observations about the high frequency and heterogeneity of NF2 mutations in sporadic meningiomas and indicate they could be restricted to a well-defined cytogenetic and clinical subgroup of menopausal women. Further studies in large series of patients are required to confirm our observations.
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Torres-Martín M, Martinez-Glez V, Peña-Granero C, Isla A, Lassaletta L, DE Campos JM, Pinto GR, Burbano RR, Meléndez B, Castresana JS, Rey JA. Gene expression analysis of aberrant signaling pathways in meningiomas. Oncol Lett 2013; 6:275-279. [PMID: 23946817 PMCID: PMC3742750 DOI: 10.3892/ol.2013.1363] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 05/15/2013] [Indexed: 12/28/2022] Open
Abstract
Examining aberrant pathway alterations is one method for understanding the abnormal signals that are involved in tumorigenesis and tumor progression. In the present study, expression arrays were performed on tumor-related genes in meningiomas. The GE Array Q Series HS-006 was used to determine the expression levels of 96 genes that corresponded to six primary biological regulatory pathways in a series of 42 meningiomas, including 32 grade I, four recurrent grade I and six grade II tumors, in addition to three normal tissue controls. Results showed that 25 genes that were primarily associated with apoptosis and angiogenesis functions were downregulated and 13 genes frequently involving DNA damage repair functions were upregulated. In addition to the inactivation of the neurofibromin gene, NF2, which is considered to be an early step in tumorigenesis, variations of other biological regulatory pathways may play a significant role in the development of meningioma.
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Li R, Wang R, Li Y, Li X, Feng Y, Li Y, Jiang C. Association study on MTHFR polymorphisms and meningioma in northern China. Gene 2012; 516:291-3. [PMID: 23276705 DOI: 10.1016/j.gene.2012.12.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 11/13/2012] [Accepted: 12/04/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND Meningioma is the second most common primary tumor of the central nervous system, and multiple genetic and environmental factors contribute to its etiology. Methylene tetrahydrofolate reductase (MTHFR) is a pivotal enzyme in folate metabolism. We conducted a case-control study to investigate the association of the MTHFR gene and meningioma in a Han population in northern China. METHODS We genotyped two SNPs (C677T and A1298C) using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). In this study 317 meningioma patients were compared to 320 normal controls. Data were analyzed by SPSS 13.0 and HaploView software. RESULTS We found a significant difference in the frequency distribution of 677CC and 677TT between cases and control groups; another SNP exhibited no differences in any genotype between the two cohorts. CONCLUSION The results revealed that variations of the MTHFR gene were associated with meningioma; this finding indicates that the MTHFR gene potentially plays an important role in the pathogenesis of meningioma in the Northern Chinese Han population.
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Affiliation(s)
- Ruiyan Li
- The Third Ward of Neurosurgery, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
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Lee JD, Kwon TJ, Kim UK, Lee WS. Genetic and epigenetic alterations of the NF2 gene in sporadic vestibular schwannomas. PLoS One 2012; 7:e30418. [PMID: 22295085 PMCID: PMC3266248 DOI: 10.1371/journal.pone.0030418] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 12/15/2011] [Indexed: 12/11/2022] Open
Abstract
Background Mutations in the neurofibromatosis type 2 (NF2) tumor-suppressor gene have been identified in not only NF2-related tumors but also sporadic vestibular schwannomas (VS). This study investigated the genetic and epigenetic alterations in tumors and blood from 30 Korean patients with sporadic VS and correlated these alterations with tumor behavior. Methodology/Principal Findings NF2 gene mutations were detected using PCR and direct DNA sequencing and three highly polymorphic microsatellite DNA markers were used to assess the loss of heterozygosity (LOH) from chromosome 22. Aberrant hypermethylation of the CpG island of the NF2 gene was also analyzed. The tumor size, the clinical growth index, and the proliferative activity assessed using the Ki-67 labeling index were evaluated. We found 18 mutations in 16 cases of 30 schwannomas (53%). The mutations included eight frameshift mutations, seven nonsense mutations, one in-frame deletion, one splicing donor site, and one missense mutation. Nine patients (30%) showed allelic loss. No patient had aberrant hypermethylation of the NF2 gene and correlation between NF2 genetic alterations and tumor behavior was not observed in this study. Conclusions/Significance The molecular genetic changes in sporadic VS identified here included mutations and allelic loss, but no aberrant hypermethylation of the NF2 gene was detected. In addition, no clear genotype/phenotype correlation was identified. Therefore, it is likely that other factors contribute to tumor formation and growth.
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Affiliation(s)
- Jong Dae Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Tae Jun Kwon
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
| | - Un-Kyung Kim
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
- * E-mail:
| | - Won-Sang Lee
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Kullar PJ, Pearson DM, Malley DS, Collins VP, Ichimura K. CpG island hypermethylation of the neurofibromatosis type 2 (NF2) gene is rare in sporadic vestibular schwannomas. Neuropathol Appl Neurobiol 2011; 36:505-14. [PMID: 20831745 DOI: 10.1111/j.1365-2990.2010.01090.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Loss of both wild-type copies of the neurofibromatosis type 2 (NF2) gene is found in both sporadic and neurofibromatosis type 2-associated vestibular schwannomas (VS). Previous studies have identified a subset of VS with no loss or mutation of NF2. We hypothesized that methylation of NF2 resulting in gene silencing may play a role in such tumours. METHODS Forty sporadic VS were analysed by array comparative genomic hybridization using 1 Mb whole genome and chromosome 22 tile path arrays. The NF2 genes were sequenced and methylation of NF2 examined by pyrosequencing. RESULTS Monosomy 22 was the only recurrent change found. Twelve tumours had NF2 mutations. Eight tumours had complete loss of wild-type NF2, four had one mutated and one wild-type allele, 11 had only one wild-type allele and 17 showed no abnormalities. Methylation analysis showed low-level methylation in four tumours at a limited number of CpGs. No high-level methylation was found. CONCLUSIONS This study shows that a significant proportion of sporadic VS (>40%) have unmethylated wild-type NF2 genes. This indicates that other mechanisms, yet to be identified, are operative in the oncogenesis of these VSs.
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Affiliation(s)
- P J Kullar
- Division of Molecular Histopathology, Department of Pathology, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK
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Mawrin C, Perry A. Pathological classification and molecular genetics of meningiomas. J Neurooncol 2010; 99:379-91. [PMID: 20809251 DOI: 10.1007/s11060-010-0342-2] [Citation(s) in RCA: 276] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 08/04/2010] [Indexed: 12/11/2022]
Abstract
Meningiomas are extremely common adult brain tumors originating from meningeal coverings of the brain and spinal cord. While most are slowly growing Word Health organization (WHO) grade I tumors, rare variants (clear cell, chordoid, papillary, and rhabdoid), as well as brain invasive (WHO grade II), atypical (WHO grade II), and anaplastic (WHO grade III) meningiomas are considerably more aggressive. This review summarizes the histopathological and genetic features of meningiomas, including differential diagnosis, pitfalls, and grading challenges. Early stages of meningioma tumorigenesis are closely linked to inactivation of one or more members of the 4.1 superfamily, including the neurofibromatosis type 2 (NF2) and 4.1B (DAL-1) genes, which interact with the 14-3-3 protein family. Other chromosome 22q genes implicated include BAM22, BCR (breakpoint cluster region), and TIMP-1, the last of which is implicated in higher-grade meningiomas. Atypical meningiomas also commonly show chromosomal losses of 1p, 6q, 10, 14q, and 18q, as well as multiple chromosomal gains. While most relevant genes remain unknown, two chromosome 14q candidates (MEG3 and NDRG2) have recently been identified. In addition to alterations of CDKN2A, p14(ARF), and CDKN2B tumor suppressor genes on 9p21, a contribution of the wingless (wnt) pathway with alterations of the E-cadherin and beta-catenin proteins, as well as alterations of the hedgehog signaling pathway have been implicated in anaplastic meningiomas. The integration of histopathological appearance, complex genetic/genomic data, and outcome will likely result in the identification of clinically distinct meningioma subgroups, which in turn can facilitate the development of targeted therapeutic strategies.
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Affiliation(s)
- Christian Mawrin
- Department of Neuropathology, Otto-von-Guericke-University Magdeburg, Leipziger Strasse 44, Magdeburg, Germany.
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Martínez-Glez V, Alvarez L, Franco-Hernández C, Torres-Martin M, de Campos JM, Isla A, Vaquero J, Lassaletta L, Castresana JS, Casartelli C, Rey JA. Genomic deletions at 1p and 14q are associated with an abnormal cDNA microarray gene expression pattern in meningiomas but not in schwannomas. ACTA ACUST UNITED AC 2009; 196:1-6. [PMID: 19963129 DOI: 10.1016/j.cancergencyto.2009.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 07/01/2009] [Accepted: 08/02/2009] [Indexed: 11/19/2022]
Abstract
The molecular pathology of meningiomas and shwannomas involve the inactivation of the NF2 gene to generate grade I tumors. Genomic losses at 1p and 14q are observed in both neoplasms, although more frequently in meningiomas. The inactivation of unidentified genes located in these regions appears associated with tumor progression in meningiomas, but no clues to its molecular/clinical meaning are available in schwannomas. Recent microarray gene expression studies have demonstrated the existence of molecular subgroups in both entities. In the present study, we correlated the presence of genomic deletions at 1p, 14q, and 22q with the expression patterns of 96 tumor-related genes obtained by cDNA low-density microarrays in a series of 65 tumors including 42 meningiomas and 23 schwannomas. Two expression pattern groups were identified by cDNA mycroarray analysis when compared to the expression pattern in normal control RNA in both meningiomas and schwannomas, each one with patterns similar and different from the normal control. Meningioma and schwannoma subgroups differed in the expression of 38 and 16 genes, respectively. Using MLPA and microsatellites, we identified genomic losses at 1p, 14q, and 22q at nonrandom frequencies (12.5-69%) in meningiomas and schwannomas. Losses at 22q were almost equally frequent in both molecular expression subgroups in both neoplasms. However, deletions at 1p and 14q accumulated in meningiomas with a gene expression pattern different from the normal pattern, whereas the inverse situation occurred in schwannomas. Those anomalies characterized the schwannomas with expression pattern similar to the normal control. These findings suggest that deletions at 1p and 14q enhance the development of an abnormal tumor-related gene expression pattern in meningiomas, but this fact is not corroborated in schwannomas.
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Affiliation(s)
- Victor Martínez-Glez
- Research Unit-Unidad de Investigación, Hospital Universiatrio La Paz, Paseo Castellana 261, 28046 Madrid, Spain
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Neurofibromatosis 2 [Bilateral acoustic neurofibromatosis, central neurofibromatosis, NF2, neurofibromatosis type II]. Genet Med 2009; 11:599-610. [PMID: 19652604 DOI: 10.1097/gim.0b013e3181ac9a27] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Neurofibromatosis 2 is a dominantly inherited tumor predisposition syndrome caused by mutations in the NF2 gene on chromosome 22. Affected individuals inevitably develop schwannomas typically affecting both vestibular nerves leading to deafness. Rehabilitation with brainstem implants is improving this outcome. Schwannomas also occur on other cranial nerves, on spinal nerve roots, and on peripheral nerves. Meningiomas and ependymomas are other tumor features. In excess of 50% of patients represent new mutations and as many as one third are mosaic for the underlying disease causing mutation. Although truncating mutations (nonsense and frameshifts) are the most frequent germline event and cause the most severe disease, single and multiple exon deletions are common. A strategy for detection of the latter is vital for a sensitive analysis. NF2 represents a difficult management problem with most patients facing substantial morbidity and reduced life expectancy. Surgery remains the focus of current management, although watchful waiting and occasionally radiation treatment have a role. In the future, the development of tailored drug therapies aimed at the genetic level are likely to provide huge improvements for this devastating, life limiting condition.
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Nagarajan RP, Costello JF. Molecular epigenetics and genetics in neuro-oncology. Neurotherapeutics 2009; 6:436-46. [PMID: 19560734 PMCID: PMC3981537 DOI: 10.1016/j.nurt.2009.04.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 03/26/2009] [Accepted: 04/09/2009] [Indexed: 01/25/2023] Open
Abstract
Gliomas arise through genetic and epigenetic alterations of normal brain cells, although the exact cell of origin for each glioma subtype is unknown. The alteration-induced changes in gene expression and protein function allow uncontrolled cell division, tumor expansion, and infiltration into surrounding normal brain parenchyma. The genetic and epigenetic alterations are tumor subtype and tumor-grade specific. Particular alterations predict tumor aggressiveness, tumor response to therapy, and patient survival. Genetic alterations include deletion, gain, amplification, mutation, and translocation, which result in oncogene activation and tumor suppressor gene inactivation, or in some instances the alterations may simply be a consequence of tumorigenesis. Epigenetic alterations in brain tumors include CpG island hypermethylation associated with tumor suppressor gene silencing, gene-specific hypomethylation associated with aberrant gene activation, and genome-wide hypomethylation potentially leading to loss of imprinting, chromosomal instability, and cellular hyperproliferation. Other epigenetic alterations, such as changes in the position of histone variants and changes in histone modifications are also likely to be important in the molecular pathology of brain tumors. Given that histone deacetylases are targets for drugs that are already in clinical trial, surprisingly little is known about histone acetylation in primary brain tumors. Although a majority of epigenetic alterations are independent of genetic alterations, there is interaction on specific genes, signaling pathways and within chromosomal domains. Next-generation sequencing technology is now the method of choice for genomic and epigenome profiling, allowing more comprehensive understanding of genetic and epigenetic contributions to tumorigenesis in the brain.
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Affiliation(s)
- Raman P. Nagarajan
- grid.266102.10000000122976811Brain Tumor Research Center, Department of Neurosurgery, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, 94143 San Francisco, California
| | - Joseph F. Costello
- grid.266102.10000000122976811Brain Tumor Research Center, Department of Neurosurgery, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, 94143 San Francisco, California
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Abstract
Neurofibromatosis type 2 (NF2) is a tumour-prone disorder characterised by the development of multiple schwannomas and meningiomas. Prevalence (initially estimated at 1: 200,000) is around 1 in 60,000. Affected individuals inevitably develop schwannomas, typically affecting both vestibular nerves and leading to hearing loss and deafness. The majority of patients present with hearing loss, which is usually unilateral at onset and may be accompanied or preceded by tinnitus. Vestibular schwannomas may also cause dizziness or imbalance as a first symptom. Nausea, vomiting or true vertigo are rare symptoms, except in late-stage disease. The other main tumours are schwannomas of the other cranial, spinal and peripheral nerves; meningiomas both intracranial (including optic nerve meningiomas) and intraspinal, and some low-grade central nervous system malignancies (ependymomas). Ophthalmic features are also prominent and include reduced visual acuity and cataract. About 70% of NF2 patients have skin tumours (intracutaneous plaque-like lesions or more deep-seated subcutaneous nodular tumours). Neurofibromatosis type 2 is a dominantly inherited tumour predisposition syndrome caused by mutations in the NF2 gene on chromosome 22. More than 50% of patients represent new mutations and as many as one-third are mosaic for the underlying disease-causing mutation. Although truncating mutations (nonsense and frameshifts) are the most frequent germline event and cause the most severe disease, single and multiple exon deletions are common. A strategy for detection of the latter is vital for a sensitive analysis. Diagnosis is based on clinical and neuroimaging studies. Presymptomatic genetic testing is an integral part of the management of NF2 families. Prenatal diagnosis and pre-implantation genetic diagnosis is possible. The main differential diagnosis of NF2 is schwannomatosis. NF2 represents a difficult management problem with most patients facing substantial morbidity and reduced life expectancy. Surgery remains the focus of current management although watchful waiting with careful surveillance and occasionally radiation treatment have a role. Prognosis is adversely affected by early age at onset, a higher number of meningiomas and having a truncating mutation. In the future, the development of tailored drug therapies aimed at the genetic level are likely to provide huge improvements for this devastating condition.
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35
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Evans DGR. Neurofibromatosis type 2 (NF2): a clinical and molecular review. Orphanet J Rare Dis 2009; 4:16. [PMID: 19545378 PMCID: PMC2708144 DOI: 10.1186/1750-1172-4-16] [Citation(s) in RCA: 317] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Accepted: 06/19/2009] [Indexed: 11/21/2022] Open
Abstract
Neurofibromatosis type 2 (NF2) is a tumour-prone disorder characterised by the development of multiple schwannomas and meningiomas. Prevalence (initially estimated at 1: 200,000) is around 1 in 60,000. Affected individuals inevitably develop schwannomas, typically affecting both vestibular nerves and leading to hearing loss and deafness. The majority of patients present with hearing loss, which is usually unilateral at onset and may be accompanied or preceded by tinnitus. Vestibular schwannomas may also cause dizziness or imbalance as a first symptom. Nausea, vomiting or true vertigo are rare symptoms, except in late-stage disease. The other main tumours are schwannomas of the other cranial, spinal and peripheral nerves; meningiomas both intracranial (including optic nerve meningiomas) and intraspinal, and some low-grade central nervous system malignancies (ependymomas). Ophthalmic features are also prominent and include reduced visual acuity and cataract. About 70% of NF2 patients have skin tumours (intracutaneous plaque-like lesions or more deep-seated subcutaneous nodular tumours). Neurofibromatosis type 2 is a dominantly inherited tumour predisposition syndrome caused by mutations in the NF2 gene on chromosome 22. More than 50% of patients represent new mutations and as many as one-third are mosaic for the underlying disease-causing mutation. Although truncating mutations (nonsense and frameshifts) are the most frequent germline event and cause the most severe disease, single and multiple exon deletions are common. A strategy for detection of the latter is vital for a sensitive analysis. Diagnosis is based on clinical and neuroimaging studies. Presymptomatic genetic testing is an integral part of the management of NF2 families. Prenatal diagnosis and pre-implantation genetic diagnosis is possible. The main differential diagnosis of NF2 is schwannomatosis. NF2 represents a difficult management problem with most patients facing substantial morbidity and reduced life expectancy. Surgery remains the focus of current management although watchful waiting with careful surveillance and occasionally radiation treatment have a role. Prognosis is adversely affected by early age at onset, a higher number of meningiomas and having a truncating mutation. In the future, the development of tailored drug therapies aimed at the genetic level are likely to provide huge improvements for this devastating condition.
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Affiliation(s)
- D Gareth R Evans
- Medical Genetics Research Group, Regional Genetics Service and National Molecular Genetics Reference Laboratory, Central Manchester Foundation Trust, St Mary's Hospital, Manchester M130JH, UK.
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36
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Nagarajan RP, Costello JF. Epigenetic mechanisms in glioblastoma multiforme. Semin Cancer Biol 2009; 19:188-97. [PMID: 19429483 DOI: 10.1016/j.semcancer.2009.02.005] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Accepted: 02/11/2009] [Indexed: 11/26/2022]
Abstract
Glioblastoma multiforme (GBM) is an aggressive and lethal cancer, accounting for the majority of primary brain tumors in adults. GBMs are characterized by genetic alterations large and small, affecting genes that control cell growth, apoptosis, angiogenesis, and invasion. Epigenetic alterations also affect the expression of cancer genes alone, or in combination with genetic mechanisms. For example, in each GBM, hundreds of genes are subject to DNA hypermethylation at their CpG island promoters. A subset of GBMs is also characterized by locus-specific and genome-wide decrease in DNA methylation, or DNA hypomethylation. Other epigenetic alterations, such as changes in the position of histone variants and changes in histone modifications are also likely important in the molecular pathology of GBM, but somewhat surprisingly there are very limited data about these in GBM. Alterations in histone modifications are especially important to understand, given that histone deacetylases are targets for drugs that are in clinical trial for GBMs. The technological wave of next-generation sequencing will accelerate GBM epigenome profiling, allowing the direct integration of DNA methylation, histone modification and gene expression profiles. Ultimately, genomic and epigenomic data should provide new predictive markers of response and lead to more effective therapies for GBM.
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Affiliation(s)
- Raman P Nagarajan
- Brain Tumor Research Center, Department of Neurosurgery, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94143, USA
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Bethke L, Webb E, Murray A, Schoemaker M, Feychting M, Lönn S, Ahlbom A, Malmer B, Henriksson R, Auvinen A, Kiuru A, Salminen T, Johansen C, Christensen HC, Muir K, McKinney P, Hepworth S, Dimitropoulou P, Lophatananon A, Swerdlow A, Houlston R. Functional polymorphisms in folate metabolism genes influence the risk of meningioma and glioma. Cancer Epidemiol Biomarkers Prev 2008; 17:1195-202. [PMID: 18483342 DOI: 10.1158/1055-9965.epi-07-2733] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Folate metabolism plays an important role in carcinogenesis. To test the hypothesis that polymorphic variation in the folate metabolism genes 5,10-methylenetetrahydrofolate reductase (MTHFR), methionine synthase (MTRR), and methionine synthase reductase (MTR) influences the risk of primary brain tumors, we genotyped 1,005 glioma cases, 631 meningioma cases, and 1,101 controls for the MTHFR C677A and A1298C, MTRR A66G, and MTR A2756G variants. MTHFR C677T-A1298C diplotypes were associated with risk of meningioma (P = 0.002) and glioma (P = 0.02); risks were increased with genotypes associated with reduced MTHFR activity. The highest risk of meningioma was associated with heterozygosity for both MTHFR variants [odds ratio (OR), 2.11; 95% confidence interval (95% CI), 1.42-3.12]. The corresponding OR for glioma was 1.23 (95% CI, 0.91-1.66). A significant association between risk of meningioma and homozygosity for MTRR 66G was also observed (OR, 1.41; 95% CI, 1.02-1.94). Our findings provide support for the role of folate metabolism in the development of primary brain tumors. In particular, genotypes associated with increased 5,10-methylenetetrahydrofolate levels are associated with elevated risk.
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Affiliation(s)
- Lara Bethke
- Section of Cancer Genetics, Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, United Kingdom
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Lillehei KO, Donson AM, Kleinschmidt-DeMasters BK. Radiation-induced meningiomas: clinical, cytogenetic, and microarray features. Acta Neuropathol 2008; 116:289-301. [PMID: 18604545 DOI: 10.1007/s00401-008-0401-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Revised: 06/03/2008] [Accepted: 06/04/2008] [Indexed: 10/21/2022]
Abstract
Limited information exists about the clinical and biological features of radiation-induced meningiomas (RIMs), particularly those that follow high-dose therapeutic radiation. We report our experience with 20 patients with RIMs (16 following high-dose radiotherapy) treated at our institution from 1993-2006. Patients (14 female, 6 male) had intervals from first radiotherapy to RIM diagnosis of 11-63 years; 12 had at least one RIM occur at an interval of 30 years or more after initial radiotherapy. Multiple RIMs were seen in six patients, with one patient developing his six RIMs sequentially over a 22-year interval. Most RIMs could be managed surgically, either with a single extensive resection or additional resection(s). Adjuvant stereotactic radiosurgery, external beam radiation, or chemotherapy were required in a minority (n = 6). Most were WHO grade I meningiomas. Complex karyotypes were found in three of four cases and abnormalities of chromosome 1p and/or LOH 1p36 were identified in five of 11 informative cases. Gene-expression microarray analysis of RIMs (n = 5) compared to non-RIMs (MEN, n = 6) and a panel of other tumors (n = 62) showed that RIM gene-expression was similar to that seen in MEN, and by clustering analysis did not separate from them. However, microarray comparative gene-expression analysis did demonstrate a few genes with significant differences in the expression level in RIM versus MEN. Of note, NF2 was under-expressed in four of five RIMs (P = 0.0065), at a similar level as measured in MEN.
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40
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Tabernero MD, Maillo A, Gil-Bellosta CJ, Castrillo A, Sousa P, Merino M, Orfao A. Gene expression profiles of meningiomas are associated with tumor cytogenetics and patient outcome. Brain Pathol 2008; 19:409-20. [PMID: 18637901 DOI: 10.1111/j.1750-3639.2008.00191.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Cytogenetic analysis is a powerful tool for predicting recurrence in meningiomas, even among histologically benign/grade I tumors. Despite this, no study has been reported in which the impact of tumor cytogenetics on the gene expression profiles (GEP) has been analyzed in meningiomas. Here, we analyzed the GEP of 47 tumors and correlated them with the most clinical relevant cytogenetic subgroups of meningiomas, as confirmed through the analysis of 172 patients. Additionally three normal meningeal samples were also studied. Overall, our results show a clear association between the clinically relevant cytogenetic subgroups of meningiomas including diploid tumors (n = 18), isolated -22/22q- (n = 12), del(1p36) alone (n = 4) and complex karyotypes associated with del(1p36) and/or -14q (n = 13) and their GEP. Accordingly, based on the expression of 85 genes (40 of which were coded in the altered chromosomes used for patient stratification) the cytogenetic class of the tumor could be predicted with an error of <1%, a clear association being found between the GEP and patient outcome (P = 0.03) but not tumor histopathology. In summary, we show a clear association between GEP of neoplastic cells and clinically relevant cytogenetic subgroups of meningiomas.
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Affiliation(s)
- Maria Dolores Tabernero
- Instituto de Estudios de Ciencias de la Salud de Castilla (IECSCYL) y León-Hospital Universitario de Salamanca, Spain
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41
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Yang E, Maguire T, Yarmush M, Androulakis I. Informative gene selection and design of regulatory networks using integer optimization. Comput Chem Eng 2008. [DOI: 10.1016/j.compchemeng.2007.01.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Simon M, Boström JP, Hartmann C. Molecular genetics of meningiomas: from basic research to potential clinical applications. Neurosurgery 2007; 60:787-98; discussion 787-98. [PMID: 17460514 DOI: 10.1227/01.neu.0000255421.78431.ae] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To review our current understanding of the molecular pathogenesis of meningiomas, to suggest topics for future investigations, and to present perspectives for clinical application. Significant progress has been made in recent years in delineating the molecular mechanisms involved in meningioma formation, growth, and malignant progression. However, many questions remain unanswered. Mutations in the NF2 gene probably account for the formation of more than half of all meningiomas. On the other hand, the molecular events underlying the initiation of meningiomas without NF2 mutations have yet to be identified. Investigating hereditary conditions associated with an increased meningioma incidence and the mechanisms underlying the development of radiation-induced meningiomas could potentially yield relevant insights. Meningioma growth is sustained by the dysregulated expression of steroid hormones, growth factors, their receptors, and activation of signal transduction cascades. The underlying genetic causes are unknown. Malignant progression of meningiomas probably involves the inactivation of tumor suppressor genes on chromosomes 1p, 9p, 10q, and 14q. However, with the possible exception of INK4A/INK4B, the actual targets of these chromosomal losses have remained largely elusive. Cell cycle dysregulation and telomerase activation have been recognized as important steps in meningioma progression. Telomere dynamics, cell cycle control, and the mechanisms responsible for deoxyribonucleic acid damage control are tightly interwoven. Investigating genes involved in the maintenance of genomic integrity might significantly deepen the understanding of meningioma progression. An area that has received relatively little attention thus far is the genetic background of meningioma spread and invasion. Possible clinical applications of the molecular data available may include a meningioma grading system based on genetic alterations, as well as therapeutic strategies for refractory meningiomas aimed at interfering with signal transduction pathways.
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Abstract
Intense research over the past four years has led to the discovery and characterization of a novel signalling network, known as the Salvador-Warts-Hippo (SWH) pathway, involved in tissue growth control in Drosophila melanogaster. At present, eleven proteins have been implicated as members of this pathway, and several downstream effector genes have been characterized. The importance of this pathway is emphasized by its evolutionary conservation, and by increasing evidence that its deregulation occurs in human tumours. Here, we review the main findings from Drosophila and the implications that these have for tumorigenesis in mammals.
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Affiliation(s)
- Kieran Harvey
- Peter MacCallum Cancer Centre, St Andrew's Place, East Melbourne, Victoria 3002 Australia.
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Martínez-Glez V, Franco-Hernández C, Lomas J, Peña-Granero C, de Campos JM, Isla A, Rey JA. Multiplex ligation-dependent probe amplification (MLPA) screening in meningioma. ACTA ACUST UNITED AC 2007; 173:170-2. [PMID: 17321335 DOI: 10.1016/j.cancergencyto.2006.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2006] [Accepted: 09/18/2006] [Indexed: 11/20/2022]
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Ahronowitz I, Xin W, Kiely R, Sims K, MacCollin M, Nunes FP. Mutational spectrum of the NF2 gene: a meta-analysis of 12 years of research and diagnostic laboratory findings. Hum Mutat 2007; 28:1-12. [PMID: 16983642 DOI: 10.1002/humu.20393] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The NF2 tumor suppressor gene on chromosome 22 is a member of the protein 4.1 family of cytoskeletal elements. A number of single- and multiple-tumor phenotypes have been linked to alterations of NF2 since its characterization in 1993. We present a meta-analysis of 967 constitutional and somatic NF2 alterations from 93 published reports, along with 59 additional unpublished events identified in our laboratory and 115 alterations identified in clinical samples submitted to the Massachusetts General Hospital (MGH) Neurogenetics DNA Diagnostic Laboratory. In total, these sources defined 1,070 small genetic changes detected primarily by exon scanning, 42 intragenic changes of one whole exon or larger, and 29 whole gene deletions and gross chromosomal rearrangements. Constitutional single-exon events (N=422) were significantly more likely to be nonsense or splice site changes than somatic events (N=533), which favored frameshift changes (chi(2) test; P<0.001). Somatic events also differed markedly between tumors of different pathology, most significantly in the tendency of somatic events in meningiomas to lie within the 5' FERM domain of the transcript (Fisher's exact test; P<0.01 in comparison to schwannomas) with a complete absence of mutations in exons 14 and 15. There was no statistically significant difference in mutation type or exon distribution between published constitutional events and those found by the clinical laboratory. Less than 10% of all published and unpublished small alterations are nontruncating (N=63) and these changes are clustered in exons 2 and 3, suggesting that this region may be especially crucial to tumor suppressor activity in the protein.
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Affiliation(s)
- Iris Ahronowitz
- Molecular Neurofibromatosis Laboratory, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
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Affiliation(s)
- Andrea I. McClatchey
- Center for Cancer Research, Massachusetts General Hospital, Charlestown, Massachusetts 02129 and Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115;
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47
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Hansson CM, Buckley PG, Grigelioniene G, Piotrowski A, Hellström AR, Mantripragada K, Jarbo C, Mathiesen T, Dumanski JP. Comprehensive genetic and epigenetic analysis of sporadic meningioma for macro-mutations on 22q and micro-mutations within the NF2 locus. BMC Genomics 2007; 8:16. [PMID: 17222329 PMCID: PMC1781436 DOI: 10.1186/1471-2164-8-16] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2006] [Accepted: 01/12/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Meningiomas are the most common intracranial neoplasias, representing a clinically and histopathologically heterogeneous group of tumors. The neurofibromatosis type 2 (NF2) tumor suppressor is the only gene known to be frequently involved in early development of meningiomas. The objective of this study was to identify genetic and/or epigenetic factors contributing to the development of these tumors. A large set of sporadic meningiomas were analyzed for presence of 22q macro-mutations using array-CGH in order to identify tumors carrying gene dosage aberrations not encompassing NF2. The NF2 locus was also comprehensively studied for point mutations within coding and conserved non-coding sequences. Furthermore, CpG methylation within the NF2 promoter region was thoroughly analyzed. RESULTS Monosomy 22 was the predominant finding, detected in 47% of meningiomas. Thirteen percent of the tumors contained interstitial/terminal deletions and gains, present singly or in combinations. We defined at least two minimal overlapping regions outside the NF2 locus that are small enough (approximately 550 kb and approximately 250 kb) to allow analysis of a limited number of candidate genes. Bialleinactivationo the NF2 gne was detected in 36% of meningiomas. Among the monosomy 22 cases, no additional NF2 mutations could be identified in 35% (17 out of 49) of tumors. Furthermore, the majority of tumors (9 out of 12) with interstitial/terminal deletions did not have any detectable NF2 mutations. Methylation within the NF2 promoter region was only identified at a single CpG site in one tumor sample. CONCLUSION We confirmed previous findings of pronounced differences in mutation frequency between different histopathological subtypes. There is a higher frequency of biallelic NF2 inactivation in fibroblastic (52%) compared to meningothelial (18%) tumors. The presence of macro-mutations on 22q also shows marked differences between fibroblastic (86%) and meningothelial (39%) subtypes. Thus, inactivation of NF2, often combined with the presence of macro-mutation on 22q, is likely not as important for the development of the meningothelial subtype, as opposed to the fibroblastic form. Analysis of 40 CpG sites distributed within 750 bp of the promoter region suggests that NF2 promoter methylation does not play a major role in meningioma development.
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Affiliation(s)
- Caisa M Hansson
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Patrick G Buckley
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Giedre Grigelioniene
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Arkadiusz Piotrowski
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | | | - Kiran Mantripragada
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Caroline Jarbo
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Tiit Mathiesen
- Department of Neurosurgery, Karolinska University Hospital, Solna, SE-171 76 Stockholm, Sweden
| | - Jan P Dumanski
- Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 751 85 Uppsala, Sweden
- University of Alabama at Birmingham, 1530 3rd. Ave. S., Kaul 420, Birmingham, AL 35294-0024, USA
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Bello MJ, Martinez-Glez V, Franco-Hernandez C, Pefla-Granero C, de Campos JM, Isla A, Lassaletta L, Vaquero J, Rey JA. DNA methylation pattern in 16 tumor-related genes in schwannomas. ACTA ACUST UNITED AC 2007; 172:84-6. [PMID: 17175387 DOI: 10.1016/j.cancergencyto.2006.02.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2006] [Accepted: 02/22/2006] [Indexed: 10/23/2022]
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49
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Baser ME. The distribution of constitutional and somatic mutations in the neurofibromatosis 2 gene. Hum Mutat 2006; 27:297-306. [PMID: 16521120 DOI: 10.1002/humu.20317] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Constitutional heterozygous inactivating mutations in the neurofibromatosis 2 (NF2) tumor suppressor gene cause the autosomal dominant disease NF2, and biallelic inactivating somatic NF2 mutations are found in a high proportion of unilateral sporadic vestibular schwannoma (USVS) and sporadic meningioma. We surveyed the distributions of constitutional NF2 mutations in 823 NF2 families, 278 somatic NF2 mutations in USVS, and 208 somatic NF2 mutations in sporadic meningioma. Based on the available NF2 mutation data, the most dominant influence on the spectra of mutations in exons 1-15 are C>T transitions that change arginine codons (CGA) to stop codons (TGA) due to spontaneous deamination of methylcytosine to thymine in CpG dinucleotides. The paucity of reported mutations in exon 9 and the absence of reported mutations in exons 16 and 17 may be related to structure-function relationships in the NF2 protein.
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Affiliation(s)
- Michael E Baser
- Academic Unit of Medical Genetics, St. Mary's Hospital, Manchester, United Kingdom
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50
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Okamoto H, Li J, Vortmeyer AO, Jaffe H, Lee YS, Gläsker S, Sohn TS, Zeng W, Ikejiri B, Proescholdt MA, Mayer C, Weil RJ, Oldfield EH, Zhuang Z. Comparative proteomic profiles of meningioma subtypes. Cancer Res 2006; 66:10199-204. [PMID: 17047085 DOI: 10.1158/0008-5472.can-06-0955] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Meningiomas are classified into three groups (benign, atypical, and anaplastic) based on morphologic characteristics. Atypical meningiomas, which are WHO grade 2 tumors, and anaplastic meningiomas, which are WHO grade 3 tumors, exhibit an increased risk of recurrence and premature death compared with benign WHO grade 1 tumors. Although atypical and anaplastic meningiomas account for <10% of all of meningiomas, it can be difficult to distinguish them from benign meningiomas by morphologic criteria alone. We used selective tissue microdissection to examine 24 human meningiomas and did two-dimensional gel electrophoresis to determine protein expression patterns. Proteins expressed differentially by meningiomas of each WHO grade were identified and sequenced. Proteomic analysis revealed protein expression patterns unique to WHO grade 1, 2, and 3 meningiomas and identified 24 proteins that distinguish each subtype. Fifteen proteins showed significant changes in expression level between benign and atypical meningiomas, whereas nine distinguished atypical from anaplastic meningiomas. Differential protein expression was confirmed by Western blotting and immunohistochemistry. We established differential proteomic profiles that characterize and distinguish meningiomas of increasing grades. The proteins and proteomic profiles enhance understanding of the pathogenesis of meningiomas and have implications for diagnosis, prognosis, and treatment.
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Affiliation(s)
- Hiroaki Okamoto
- Surgical Neurology Branch and Protein/Peptide Sequencing Facility, National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland 20892, USA
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