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Zhang Q, Song LR, Huo XL, Wang L, Zhang GB, Hao SY, Jia HW, Kong CL, Jia W, Wu Z, Xu BN, Jia GJ, Zhang JT. MicroRNA-221/222 Inhibits the Radiation-Induced Invasiveness and Promotes the Radiosensitivity of Malignant Meningioma Cells. Front Oncol 2020; 10:1441. [PMID: 32983973 PMCID: PMC7477324 DOI: 10.3389/fonc.2020.01441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/08/2020] [Indexed: 12/12/2022] Open
Abstract
The controversy of adjuvant radiotherapy of meningiomas is at least partially due to the insufficient understanding on meningioma cells' response to irradiation and the shortage of radiosensitivity-promotion methods. MicroRNA-221 and microRNA-222 were identified as critical regulators of radiosensitivity in several other tumors. However, their effect in meningiomas has yet to be confirmed. Therefore, the malignant meningioma IOMM-Lee cells were adopted, transfected with microRNA-221/222 mimics or inhibitors, and irradiated with different dosages. The effects of radiation and microRNA-221/222 were then assessed in vitro and in vivo. Radiation dose increases and microRNA-221/222 downregulation synergistically inhibited cell proliferation and colony formation, prevented xenograft tumor progression, and promoted apoptosis, but antagonistically regulated cell invasiveness. Pairwise comparisons revealed that only high-dose radiations (6 and 8 Gy) can significantly promote cell invasiveness in comparison with unirradiated counterparts. Further comparisons exhibited that downregulating the microRNA-221/222 expression can reverse this radiation-induced cell invasiveness to a level of untransfected and unirradiated cells only if cells were irradiated with no more than 6 Gy. In addition, this approach can promote IOMM-Lee's radiosensitivity. Meanwhile, we also detected that the dose rate of irradiation affects cell cycle distribution and cell apoptosis of IOMM-Lee. A high dose rate irradiation induces G0/G1 cell cycle arrest and apoptosis-promoting effect. Therefore, for malignant meningiomas, high-dose irradiation can facilitate cell invasiveness significantly. Downregulating the microRNA-221/222 level can reverse the radiation-induced cell invasiveness while enhancing the apoptosis-promoting and proliferation-inhibiting effects of radiation and promoting cell radiosensitivity.
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Affiliation(s)
- Qing Zhang
- Department of Neurosurgery, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Lai-Rong Song
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Xu-Lei Huo
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Liang Wang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Guo-Bin Zhang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Shu-Yu Hao
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Hai-Wei Jia
- Department of Radiotherapy, Beijing Fengtai You Anmen Hospital, Beijing, China
| | - Chui-Lin Kong
- Department of Radiotherapy, Beijing Fengtai You Anmen Hospital, Beijing, China
| | - Wang Jia
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Zhen Wu
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Bai-Nan Xu
- Department of Neurosurgery, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Gui-Jun Jia
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
| | - Jun-Ting Zhang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Key Laboratory of Brain Tumor, Beijing, China
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Beckmann A, Hainz N, Tschernig T, Meier C. Facets of Communication: Gap Junction Ultrastructure and Function in Cancer Stem Cells and Tumor Cells. Cancers (Basel) 2019; 11:cancers11030288. [PMID: 30823688 PMCID: PMC6468480 DOI: 10.3390/cancers11030288] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 12/28/2022] Open
Abstract
Gap junction proteins are expressed in cancer stem cells and non-stem cancer cells of many tumors. As the morphology and assembly of gap junction channels are crucial for their function in intercellular communication, one focus of our review is to outline the data on gap junction plaque morphology available for cancer cells. Electron microscopic studies and freeze-fracture analyses on gap junction ultrastructure in cancer are summarized. As the presence of gap junctions is relevant in solid tumors, we exemplarily outline their role in glioblastomas and in breast cancer. These were also shown to contain cancer stem cells, which are an essential cause of tumor onset and of tumor transmission into metastases. For these processes, gap junctional communication was shown to be important and thus we summarize, how the expression of gap junction proteins and the resulting communication between cancer stem cells and their surrounding cells contributes to the dissemination of cancer stem cells via blood or lymphatic vessels. Based on their importance for tumors and metastases, future cancer-specific therapies are expected to address gap junction proteins. In turn, gap junctions also seem to contribute to the unattainability of cancer stem cells by certain treatments and might thus contribute to therapeutic resistance.
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Affiliation(s)
- Anja Beckmann
- Department of Anatomy and Cell Biology, Saarland University, 66421 Homburg, Germany.
| | - Nadine Hainz
- Department of Anatomy and Cell Biology, Saarland University, 66421 Homburg, Germany.
| | - Thomas Tschernig
- Department of Anatomy and Cell Biology, Saarland University, 66421 Homburg, Germany.
| | - Carola Meier
- Department of Anatomy and Cell Biology, Saarland University, 66421 Homburg, Germany.
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3
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Zhang Q, Jia GJ, Zhang GB, Wang L, Wu Z, Jia W, Hao SY, Ni M, Li D, Wang K, Zhang JT. A Logistic Regression Model for Detecting the Presence of Malignant Progression in Atypical Meningiomas. World Neurosurg 2019; 126:e392-e401. [PMID: 30822595 DOI: 10.1016/j.wneu.2019.02.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 02/04/2019] [Accepted: 02/06/2019] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To develop a method to distinguish atypical meningiomas (AMs) with malignant progression (MP) from primary AMs without a clinical history. METHODS The clinical, radiologic, and pathologic data of 33 previously Simpson grade I resected (if any) as well as no radiotherapy treated intracranial AMs between January 2008 and December 2015 were reviewed. Immunohistochemical staining for connexin 43 (Cx43) and Ki-67 was performed. Descriptive analysis and univariate and multivariate logistic regression analyses were used to explore independent predictors of MP. A multivariable logistic model was developed to estimate the risk of MP, and its diagnostic value was determined from a receiver operating characteristic curve. RESULTS There were 11 AMs (33.3%) with histopathologically confirmed MP from benign meningiomas. The other 22 (66.7%) were initially diagnosed AMs with no histopathologically confirmed MP during a median 60.5 months (range, 42-126 months) of follow-up. Univariate and multivariate logistic analyses showed that irregular tumor shape (P = 0.010) and low Cx43 expression (P = 0.010) were independent predictors of the presence of MP, and the predicted probability was calculated by the following formula: P = 1/[1+exp.{1.218-(3.202×Shape)+(3.814×Cx43)}]. P > 0.5 for an irregularly shaped (score 1) AM with low Cx43 expression (score 0) indicated a high probability of MP. The sensitivity, specificity, positive predictive value, negative predictive value, and overall predictive accuracy were 63.6, 95.6, 87.5, 84.0, and 84.8%, respectively. CONCLUSIONS Low Cx43 expression and irregular tumor shape were independent predictors of the presence of MP. The relevant logistic regression model was found to be effective in distinguishing MP-AMs from primary AMs.
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Affiliation(s)
- Qing Zhang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Gui-Jun Jia
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Guo-Bin Zhang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Liang Wang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Zhen Wu
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Wang Jia
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Shu-Yu Hao
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Ming Ni
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Da Li
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Ke Wang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China
| | - Jun-Ting Zhang
- Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing, People's Republic of China; China National Clinical Research Center for Neurological Diseases, Beijing, People's Republic of China; Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, People's Republic of China; Beijing Key Laboratory of Brain Tumor, Beijing, People's Republic of China.
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Bose A, Basu R, Maulik M, Das Sarma J. Loss of Cx43-Mediated Functional Gap Junction Communication in Meningeal Fibroblasts Following Mouse Hepatitis Virus Infection. Mol Neurobiol 2018; 55:6558-6571. [PMID: 29327203 PMCID: PMC7090783 DOI: 10.1007/s12035-017-0861-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/21/2017] [Indexed: 10/28/2022]
Abstract
Mouse hepatitis virus (MHV) infection causes meningoencephalitis by disrupting the neuro-glial and glial-pial homeostasis. Recent studies suggest that MHV infection alters gap junction protein connexin 43 (Cx43)-mediated intercellular communication in brain and primary cultured astrocytes. In addition to astrocytes, meningeal fibroblasts also express high levels of Cx43. Fibroblasts in the meninges together with the basal lamina and the astrocyte endfeet forms the glial limitans superficialis as part of the blood-brain barrier (BBB). Alteration of glial-pial gap junction intercellular communication (GJIC) in MHV infection has the potential to affect the integrity of BBB. Till date, it is not known if viral infection can modulate Cx43 expression and function in cells of the brain meninges and thus affect BBB permeability. In the present study, we have investigated the effect of MHV infection on Cx43 localization and function in mouse brain meningeal cells and primary meningeal fibroblasts. Our results show that MHV infection reduces total Cx43 levels and causes its intracellular retention in the perinuclear compartments reducing its surface expression. Reduced trafficking of Cx43 to the cell surface in MHV-infected cells is associated with loss functional GJIC. Together, these data suggest that MHV infection can directly affect expression and cellular distribution of Cx43 resulting in loss of Cx43-mediated GJIC in meningeal fibroblasts, which may be associated with altered BBB function observed in acute infection.
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Affiliation(s)
- Abhishek Bose
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur, Nadia, West Bengal, 741246, India
| | - Rahul Basu
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur, Nadia, West Bengal, 741246, India
| | - Mahua Maulik
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur, Nadia, West Bengal, 741246, India
| | - Jayasri Das Sarma
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata (IISER-K), Mohanpur, Nadia, West Bengal, 741246, India.
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5
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Basu R, Bose A, Thomas D, Das Sarma J. Microtubule-assisted altered trafficking of astrocytic gap junction protein connexin 43 is associated with depletion of connexin 47 during mouse hepatitis virus infection. J Biol Chem 2017; 292:14747-14763. [PMID: 28566289 DOI: 10.1074/jbc.m117.786491] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/16/2017] [Indexed: 11/06/2022] Open
Abstract
Gap junctions (GJs) are important for maintenance of CNS homeostasis. GJ proteins, connexin 43 (Cx43) and connexin 47 (Cx47), play a crucial role in production and maintenance of CNS myelin. Cx43 is mainly expressed by astrocytes in the CNS and forms gap junction intercellular communications between astrocytes-astrocytes (Cx43-Cx43) and between astrocytes-oligodendrocytes (Cx43-Cx47). Mutations of these connexin (Cx) proteins cause dysmyelinating diseases in humans. Previously, it has been shown that Cx43 localization and expression is altered due to mouse hepatitis virus (MHV)-A59 infection both in vivo and in vitro; however, its mechanism and association with loss of myelin protein was not elaborated. Thus, we explored potential mechanisms by which MHV-A59 infection alters Cx43 localization and examined the effects of viral infection on Cx47 expression and its association with loss of the myelin marker proteolipid protein. Immunofluorescence and total internal reflection fluorescence microscopy confirmed that MHV-A59 used microtubules (MTs) as a conduit to reach the cell surface and restricted MT-mediated Cx43 delivery to the cell membrane. Co-immunoprecipitation experiments demonstrated that Cx43-β-tubulin molecular interaction was depleted due to protein-protein interaction between viral particles and MTs. During acute MHV-A59 infection, oligodendrocytic Cx47, which is mainly stabilized by Cx43 in vivo, was down-regulated, and its characteristic staining remained disrupted even at chronic phase. The loss of Cx47 was associated with loss of proteolipid protein at the chronic stage of MHV-A59 infection.
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Affiliation(s)
- Rahul Basu
- From the Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Abhishek Bose
- From the Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Deepthi Thomas
- From the Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
| | - Jayasri Das Sarma
- From the Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, India
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6
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Ferumoxytol-enhanced MRI differentiation of meningioma from dural metastases: a pilot study with immunohistochemical observations. J Neurooncol 2016; 129:301-9. [PMID: 27393348 DOI: 10.1007/s11060-016-2175-0] [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: 12/21/2015] [Accepted: 06/04/2016] [Indexed: 11/27/2022]
Abstract
Malignant dural neoplasms are not reliably distinguished from benign dural neoplasms with contrast-enhanced magnetic resonance imaging (MRI). MRI enhancement in central nervous system (CNS) diseases imaged with ferumoxytol has been attributed to intracellular uptake in macrophages rather than vascular leakage. We compared imaging to histopathology and immunohistochemistry in meningiomas and dural metastases having ferumoxytol-enhanced MRI (FeMRI) and gadolinium-enhanced MRI (GdMRI) in order to correlate enhancement patterns to macrophage presence and vascular state. All patients having extraaxial CNS tumors were retrospectively selected from one of two ongoing FeMRI studies. Enhancement was compared between GdMRI and FeMRI. Diagnoses were confirmed histologically and/or by characteristic imaging. Tumor and vascular histology was reviewed. Immunohistochemical staining for CD68 (a macrophage marker), Connexin-43 (Cx43) (a marker of normal gap junctions), and smooth muscle actin (SMA) as a marker of vascularity, was performed in seven study cases with available tissue. Immunohistochemistry was performed on archival material from 33 subjects outside of the current study as controls: 20 WHO grade I cases of meningioma and 13 metastatic tumors. Metastases displayed marked delayed enhancement on FeMRI, similar to GdMRI. Four patients with dural metastases and one patient with meningioma showed similar enhancement on FeMRI and GdMRI. Five meningiomas with typical enhancement on GdMRI lacked enhancement on FeMRI. Enhancement on FeMRI was better associated with decreased Cx43 expression than intralesional macrophages. These pilot data suggest that FeMRI may better differentiate metastatic disease from meningiomas than GdMRI, and that differences in tumor vasculature rather than macrophage presence could underlie differences in contrast enhancement.
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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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Dong Y, Zhou X, Wu B, Wang J, Ma H, Zhou H, Jiang S, Lu G, Hu Q. Four cases of distinctive meningiomas with Zellballen growth pattern. APMIS 2010; 117:936-40. [PMID: 20078559 DOI: 10.1111/j.1600-0463.2009.02551.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Meningiomas are attributed to those tumours with slow-growing pattern occurring predominantly in middle-aged or elderly patients. Fifteen histological variants have been described based on the variable histomorphological features. Herein we report four cases with specific Zellballen growth pattern, giving the tumours a 'paraganglioma-like' general aspect. The diagnosis of meningiomas was confirmed by immunohistochemical and ultrastructural findings. Histopathologists should be aware of this specific morphology which can lead to misdiagnosis.
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Affiliation(s)
- Yingchun Dong
- Department of Pathology, Clinical School of Medical College of Nanjing University/Nanjing Jinling Hospital, Nanjing, China
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9
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Yamazaki K, Eyden B. An Ultrastructural and Immunohistochemical Study of Microcystic Meningioma with Emphasis on Matrix Proteins and Connexin 26 Type Gap Junctions. Ultrastruct Pathol 2009; 28:247-53. [PMID: 15693636 DOI: 10.1080/019131290505257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Although the histopathological subtypes of meningioma do not themselves appear to have prognostic significance, they are collectively important for defining the overall histopathological entity of microcystic meningioma (MCM) and allowing a distinction from other intracranial tumors, such as capillary hemangioblastoma, glioma, and metastatic renal cell carcinoma showing similar histology. Four cases of MCM were analyzed by conventional histology, immunohistochemistry, and electron microscopy. The present series of MCM was characterized by spindle- or cobweb-shaped tumor cells, characteristically associated small blood vessels, and a peculiar microcystic pattern. Among the microcystic meningeal tumor tissue, small areas of conventional subtypes were identified. Immunohistochemically, tumor cells showed the mesenchymal features of vimentin positivity and a rich distribution of matrix proteins around tumor cells. They lacked epithelial marker positivity but were faintly EMA positive. Ultrastructurally, primitive cellular junctions, desmosomes, and gap junctions were frequently seen between tumor cells. The gap junctions correlated with connexin 26 immunoreactivity. Although lacking an obvious epithelial nature, these features could be interpreted as showing an abortive differentiation mimicking meningothelial (arachnoidal) cells, which, physiologically, regulate cerebrospinal fluid between blood vessels and brain parenchyma.
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Affiliation(s)
- Kazuto Yamazaki
- Department of Pathology, Saiseikai Central Hospital, Tokyo, Japan.
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10
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Holman DW, Grzybowski DM, Mehta BC, Katz SE, Lubow M. Characterization of cytoskeletal and junctional proteins expressed by cells cultured from human arachnoid granulation tissue. Cerebrospinal Fluid Res 2005; 2:9. [PMID: 16223448 PMCID: PMC1285366 DOI: 10.1186/1743-8454-2-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Accepted: 10/13/2005] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The arachnoid granulations (AGs) are projections of the arachnoid membrane into the dural venous sinuses. They function, along with the extracranial lymphatics, to circulate the cerebrospinal fluid (CSF) to the systemic venous circulation. Disruption of normal CSF dynamics may result in increased intracranial pressures causing many problems including headaches and visual loss, as in idiopathic intracranial hypertension and hydrocephalus. To study the role of AGs in CSF egress, we have grown cells from human AG tissue in vitro and have characterized their expression of those cytoskeletal and junctional proteins that may function in the regulation of CSF outflow. METHODS Human AG tissue was obtained at autopsy, and explanted to cell culture dishes coated with fibronectin. Typically, cells migrated from the explanted tissue after 7-10 days in vitro. Second or third passage cells were seeded onto fibronectin-coated coverslips at confluent densities and grown to confluency for 7-10 days. Arachnoidal cells were tested using immunocytochemical methods for the expression of several common cytoskeletal and junctional proteins. Second and third passage cultures were also labeled with the common endothelial markers CD-31 or VE-cadherin (CD144) and their expression was quantified using flow cytometry analysis. RESULTS Confluent cultures of arachnoidal cells expressed the intermediate filament protein vimentin. Cytokeratin intermediate filaments were expressed variably in a subpopulation of cells. The cultures also expressed the junctional proteins connexin43, desmoplakin 1 and 2, E-cadherin, and zonula occludens-1. Flow cytometry analysis indicated that second and third passage cultures failed to express the endothelial cell markers CD31 or VE-cadherin in significant quantities, thereby showing that these cultures did not consist of endothelial cells from the venous sinus wall. CONCLUSION To our knowledge, this is the first report of the in vitro culture of arachnoidal cells grown from human AG tissue. We demonstrated that these cells in vitro continue to express some of the cytoskeletal and junctional proteins characterized previously in human AG tissue, such as proteins involved in the formation of gap junctions, desmosomes, epithelial specific adherens junctions, as well as tight junctions. These junctional proteins in particular may be important in allowing these arachnoidal cells to regulate CSF outflow.
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Affiliation(s)
- David W Holman
- Biomedical Engineering Center, The Ohio State University, 260 Bevis Hall, 1080 Carmack Rd, Columbus, OH 43210, USA
- Neuroophthalmic Research Group, Department of Ophthalmology, The Ohio State University, Cramblett Hall 5A, 456 W. 10th Ave., Columbus, Ohio 43210, USA
| | - Deborah M Grzybowski
- Biomedical Engineering Center, The Ohio State University, 260 Bevis Hall, 1080 Carmack Rd, Columbus, OH 43210, USA
- Neuroophthalmic Research Group, Department of Ophthalmology, The Ohio State University, Cramblett Hall 5A, 456 W. 10th Ave., Columbus, Ohio 43210, USA
| | - Bhavya C Mehta
- Department of Chemical and Biomolecular Engineering, The Ohio State University, 125A Koffolt Laboratories, 140 W. 19th Ave., Columbus, OH 43210, USA
| | - Steven E Katz
- Neuroophthalmic Research Group, Department of Ophthalmology, The Ohio State University, Cramblett Hall 5A, 456 W. 10th Ave., Columbus, Ohio 43210, USA
| | - Martin Lubow
- Neuroophthalmic Research Group, Department of Ophthalmology, The Ohio State University, Cramblett Hall 5A, 456 W. 10th Ave., Columbus, Ohio 43210, USA
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Abstract
Meningiomas are common central nervous system tumors that originate from the meningeal coverings of the brain and the spinal cord. Most meningiomas are slowly growing benign tumors that histologically correspond to World Health Organization (WHO) grade I. However, certain rare histological variants (clear cell, chordoid, papillary, and rhabdoid), as well as atypical (WHO grade II) and anaplastic (WHO grade III) meningiomas show a more aggressive biological behavior and are clinically associated with a high risk of local recurrence and a less favorable prognosis. This review summarizes the most important features of meningioma pathology and provides an up-to-date overview about the molecular mechanisms involved in meningioma initiation and progression. Current data indicate that meningioma initiation is closely linked to the inactivation of one or more members of the highly conserved protein 4.1 superfamily, including the neurofibromatosis type 2 gene product merlin/schwannomin, protein 4.IB (DAL-1) and protein 4.1R. The genetic alterations in atypical meningiomas are complex and involve losses on 1p, 6q, 10, 14q and 18q, as well as gains on multiple chromosomes. The relevant genes are still unknown. Anaplastic meningiomas show even more complex genetic alterations, including frequent alteration of the CDKN2A, p14ARF, and CDKN2B tumor suppressor genes at 9p21, as well as gene amplification on 17q23. A better understanding of the molecular mechanisms involved in meningioma pathogenesis may not only lead to the identification of novel diagnostic and prognostic marker but will also facilitate the development of new pathogenesis-based therapeutic strategies.
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Affiliation(s)
- Arie Perry
- Division of Neuropathology, Washington University School of Medicine, St Louis, MO 63110-1093, USA.
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Desai K, Nadkarni T, Fattepurkar S, Goel A, Shenoy A, Chitale A, Muzumdar G. Hemangiopericytoma in the Trigone of the Lateral Ventricle-Case Report-. Neurol Med Chir (Tokyo) 2004; 44:484-8. [PMID: 15600284 DOI: 10.2176/nmc.44.484] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A 40-year-old male presented with hemangiopericytoma in the lateral ventricle manifesting as headaches persisting for 6 months associated with vomiting and visual obscurations for one month. Computed tomography and magnetic resonance imaging of the brain showed a large tumor in the trigone of the right lateral ventricle. The highly vascular tumor was completely excised. The histological diagnosis was hemangiopericytoma. Hemangiopericytoma is rarely located in the lateral ventricle and is difficult to differentiate from meningioma by neuroimaging methods.
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Affiliation(s)
- Ketan Desai
- Department of Neurosurgery, King Edward Memorial Hospital, Seth G. S. Medical College, Parel, Mumbai, India.
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