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White AJ, Harary M, Casaos J, Everson RG. Current immunotherapy techniques in meningioma. Expert Rev Anticancer Ther 2024; 24:931-941. [PMID: 39233324 DOI: 10.1080/14737140.2024.2399252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 08/28/2024] [Indexed: 09/06/2024]
Abstract
INTRODUCTION Although meningiomas are the most common primary brain tumor, there are limited treatment options for recurrent or aggressive lesions. Compared to other brain tumors, meningiomas may be uniquely amenable to immunotherapy by virtue of their location outside the blood-brain barrier. AREAS COVERED This review describes our current understanding of the immunology of the meninges, as well as immune cell infiltration and immune signaling in meningioma. Current literature on meningioma immunology and immunotherapy was comprehensively reviewed and summarized by a comprehensive search of MEDLINE (1/1/1990-6/1/2024). Further, we describe the current state of immunotherapeutic approaches, as well as potential future targets. Potential immunotherapeutic approaches include immune checkpoint inhibition, CAR-T approaches, tumor vaccine therapy, and immunogenic molecular markers. EXPERT OPINION Meningioma immunotherapy is in early stages, as no immunotherapies are currently included in treatment guidelines. There is substantial heterogeneity in immune cell infiltration, immunogenicity, and immune escape across tumors, even within tumor grade. Furthering our understanding of meningioma immunology and tumor classification will allow for careful selection of tumors and patient populations that may benefit from primary or adjunctive immunotherapy for meningioma.
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Affiliation(s)
- Alexandra J White
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, USA
| | - Maya Harary
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, USA
| | - Joshua Casaos
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, USA
| | - Richard G Everson
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, USA
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Lotsch C, Warta R, Herold-Mende C. The Molecular and Immunological Landscape of Meningiomas. Int J Mol Sci 2024; 25:9631. [PMID: 39273576 PMCID: PMC11394785 DOI: 10.3390/ijms25179631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 09/02/2024] [Accepted: 09/04/2024] [Indexed: 09/15/2024] Open
Abstract
Meningiomas are the most common primary intracranial tumors in adults and typically have a slow-growing and benign nature. However, there is also a substantial subset of meningiomas that shows aggressive clinical behavior and is refractory to standard treatment modalities, which are still limited to surgery and/or radiotherapy. Despite intensive research, no systemic treatment options are yet available in the clinic for these challenging tumors, resulting in poor patient outcome. Intensive research on the molecular pathogenesis of meningiomas has led to improved diagnostic tools, but so far there is no standardized implementation for the molecular profiling of these tumors for clinical practice. Recent research advances have also focused on the immunophenotyping of meningiomas, leading to several clinical trials examining the use of immune checkpoint blockade therapy in patients with clinically aggressive subtypes. In this review, we aim to summarize the current knowledge on the molecular and immunological landscape of meningiomas in detail and provide current and progressive ideas for future directions.
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Affiliation(s)
- Catharina Lotsch
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Rolf Warta
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Christel Herold-Mende
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital Heidelberg, 69120 Heidelberg, Germany
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3
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Dave F, Herrera K, Lockley A, van de Weijer LL, Henderson S, Sofela AA, Hook L, Adams CL, Ercolano E, Hilton DA, Maze EA, Kurian KM, Ammoun S, Hanemann CO. Targeting MERTK on tumour cells and macrophages: a potential intervention for sporadic and NF2-related meningioma and schwannoma tumours. Oncogene 2024:10.1038/s41388-024-03131-z. [PMID: 39179860 DOI: 10.1038/s41388-024-03131-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/26/2024]
Abstract
Meningioma and schwannoma are common tumours of the nervous system. They occur sporadically or as part of the hereditary NF2-related schwannomatosis syndrome. There is an unmet need for new effective drug treatments for both tumour types. In this paper, we demonstrate overexpression/activation of TAM (TYRO3/AXL/MERTK) receptors (TAMs) and overexpression/release of ligand GAS6 in patient-derived meningioma tumour cells and tissue. For the first time, we reveal the formation of MERTK/TYRO3 heterocomplexes in meningioma and schwannoma tissue. We demonstrate the dependence of AXL and TYRO3 expression on MERTK in both tumour types, as well as interdependency of MERTK and AXL expression in meningioma. We show that MERTK and AXL contribute to increased proliferation and survival of meningioma and schwannoma cells, which we inhibited in vitro using the MERTK/FLT3 inhibitor UNC2025 and the AXL inhibitor BGB324. UNC2025 was effective in both tumour types with superior efficacy over BGB324. Finally, we found that TAMs are expressed by tumour-associated macrophages in meningioma and schwannoma tumours and that UNC2025 strongly depleted macrophages in both tumour types.
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Affiliation(s)
- Foram Dave
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Kevin Herrera
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Alex Lockley
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Laurien L van de Weijer
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Summer Henderson
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Agbolahan A Sofela
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Laura Hook
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Claire L Adams
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Emanuela Ercolano
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - David A Hilton
- Department of Cellular and Anatomical Pathology, University Hospitals Plymouth NHS Trust, Derriford, Plymouth, PL6 8DH, UK
| | - Emmanuel A Maze
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Kathreena M Kurian
- University of Bristol Medical School & North Bristol Trust, Southmead Hospital, Bristol, BS1 0NB UK, Bristol, BS1 0NB, UK
| | - Sylwia Ammoun
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK.
| | - C Oliver Hanemann
- University of Plymouth, Faculty of Health, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK.
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Chávez-López LM, Carballo-López GI, Lugo-Ibarra KDC, Castro-Ceseña AB. A comprehensive framework for managing metabolic dysfunction-associated steatotic liver disease: analyzing novel risk factors and advances in nanotechnology-based treatments and diagnosis. RSC Med Chem 2024; 15:2622-2642. [PMID: 39149095 PMCID: PMC11324041 DOI: 10.1039/d4md00420e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 08/17/2024] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) presents a growing global health challenge requiring innovative approaches for effective management. This comprehensive review examines novel risk factors, including environmental pollutants like heavy metals, and underscores the complexity of personalized medicine tailored to individual patient profiles, influenced by gender and sex differences. Traditional treatments for MASLD, such as glucose- and lipid-lowering agents, show mixed results, highlighting the necessity for larger, long-term studies to establish safety and efficacy. Alternative therapies, including antioxidants, stem cells, and antiplatelets, although promising, demand extensive clinical trials for validation. This review highlights the importance of personalized medicine, considering individual variations and specific factors such as gender and sex, to optimize treatment responses. The shift from metabolic-associated fatty liver disease (MAFLD) to MASLD terminology underscores the metabolic components of the disease, aligning with the multiple-hit theory and highlighting the necessity for comprehensive risk factor management. Our vision advocates for an integrated approach to MASLD, encompassing extensive risk factor analysis and the development of safer, more effective treatments. Primary prevention and awareness initiatives are crucial in addressing the rising prevalence of MASLD. Future research must prioritize larger, long-term studies and personalized medicine principles to ensure the effective use of emerging therapies and technologies. The review underscores the need for continuous exploration and innovation, balancing the benefits and challenges of nanotechnology, to combat MASLD and improve patient outcomes comprehensively.
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Affiliation(s)
- Lucia M Chávez-López
- Facultad de Medicina, Centro de Estudios Universitarios Xochicalco Campus Ensenada San Francisco 1139, Fraccionamiento Misión C.P. 22830 Ensenada Baja California Mexico
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE) Carretera Ensenada-Tijuana No. 3918, Zona Playitas C.P. 22860 Ensenada Baja California Mexico
| | - Gabriela I Carballo-López
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE) Carretera Ensenada-Tijuana No. 3918, Zona Playitas C.P. 22860 Ensenada Baja California Mexico
| | | | - Ana B Castro-Ceseña
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE) Carretera Ensenada-Tijuana No. 3918, Zona Playitas C.P. 22860 Ensenada Baja California Mexico
- CONAHCYT - Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE) Carretera Ensenada-Tijuana No. 3918, Zona Playitas C.P. 22860 Ensenada Baja California Mexico
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Laraba L, Hillson L, de Guibert JG, Hewitt A, Jaques MR, Tang TT, Post L, Ercolano E, Rai G, Yang SM, Jagger DJ, Woznica W, Edwards P, Shivane AG, Hanemann CO, Parkinson DB. Inhibition of YAP/TAZ-driven TEAD activity prevents growth of NF2-null schwannoma and meningioma. Brain 2023; 146:1697-1713. [PMID: 36148553 PMCID: PMC10115179 DOI: 10.1093/brain/awac342] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 08/19/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
Schwannoma tumours typically arise on the eighth cranial nerve and are mostly caused by loss of the tumour suppressor Merlin (NF2). There are no approved chemotherapies for these tumours and the surgical removal of the tumour carries a high risk of damage to the eighth or other close cranial nerve tissue. New treatments for schwannoma and other NF2-null tumours such as meningioma are urgently required. Using a combination of human primary tumour cells and mouse models of schwannoma, we have examined the role of the Hippo signalling pathway in driving tumour cell growth. Using both genetic ablation of the Hippo effectors YAP and TAZ as well as novel TEAD palmitoylation inhibitors, we show that Hippo signalling may be successfully targeted in vitro and in vivo to both block and, remarkably, regress schwannoma tumour growth. In particular, successful use of TEAD palmitoylation inhibitors in a preclinical mouse model of schwannoma points to their potential future clinical use. We also identify the cancer stem cell marker aldehyde dehydrogenase 1A1 (ALDH1A1) as a Hippo signalling target, driven by the TAZ protein in human and mouse NF2-null schwannoma cells, as well as in NF2-null meningioma cells, and examine the potential future role of this new target in halting schwannoma and meningioma tumour growth.
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Affiliation(s)
- Liyam Laraba
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Lily Hillson
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Julio Grimm de Guibert
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Amy Hewitt
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Maisie R Jaques
- Department of Life Sciences, University of Bath, Bath, Somerset BA2 7AY, UK
| | - Tracy T Tang
- Vivace Therapeutics Inc., San Mateo, CA 94403, USA
| | - Leonard Post
- Vivace Therapeutics Inc., San Mateo, CA 94403, USA
| | - Emanuela Ercolano
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Ganesha Rai
- National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA
| | - Shyh-Ming Yang
- National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA
| | - Daniel J Jagger
- UCL Ear Institute, University College London, London WC1X 8EE, UK
| | - Waldemar Woznica
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - Philip Edwards
- Department of Cellular and Anatomical Pathology, University Hospitals Plymouth NHS Trust, Derriford, Plymouth, Devon PL6 8DH, UK
| | - Aditya G Shivane
- Department of Cellular and Anatomical Pathology, University Hospitals Plymouth NHS Trust, Derriford, Plymouth, Devon PL6 8DH, UK
| | - C Oliver Hanemann
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
| | - David B Parkinson
- Faculty of Heath: Medicine, Dentistry and Human Sciences, Derriford Research Facility, University of Plymouth, Plymouth, Devon PL6 8BU, UK
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Abdelrahman A, Negroni C, Sahm F, Adams CL, Urbanic-Purkart T, Khalil M, Vergura R, Morelli C, Hanemann CO. miR-497 and 219 in blood aid meningioma classification. J Neurooncol 2022; 160:137-147. [PMID: 36076132 DOI: 10.1007/s11060-022-04126-0] [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: 07/25/2022] [Accepted: 08/30/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The current WHO classification and methylation status help predict meningioma recurrence and prognosis. However, up to date, there is no circulating biomarker showing clinical value in meningioma diagnosis or classification. Circulating miRNAs showed the potential to be used as cancer biomarkers in various tumours. This research evaluated specific miRNAs, miR-497 and miR-219, as convenient and efficient predictors of meningioma grades. METHODS We studied serum and exosomal levels of miR-497 in 74 meningioma samples (WHO grade I = 25, WHO grade II = 25, and WHO grade III = 24) and 53 healthy controls. The serum level of miR-219 was studied in 56 meningioma samples WHO grade I = 22, WHO grade II = 14, and WHO grade III = 20). We used qPCR for miRNA quantification. We also tested two different normalisers, endogenous and external, and evaluated their impact on the diagnostic value of miR-497. RESULTS The serum and exosomal levels of miR-497 distinguished meningioma from the control samples. Moreover, miR-497 was a suitable identifier for meningioma grade. When we combined miR-497 and miR-219, the efficacy of the combined biomarker was higher than miR-497 or miR-219 when used individually in meningioma classification. Both miR-497 and miR-219 showed a noticeable change with the methylation class of meningioma. CONCLUSION This study shows that serum miR-497 is an effective and easy-to-measure biomarker for meningioma diagnosis and classification. Moreover, when we combined miR-497 and miR-219, the combined biomarker showed enhanced accuracy in meningioma classification. Furthermore, this is the first study to evaluate the correlation between serum circulating miRNA and the methylation status in meningioma.
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Affiliation(s)
- Ahmed Abdelrahman
- Peninsula Medical School, Faculty of Health, Medicine, Dentistry and Human Sciences, University of Plymouth, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Caterina Negroni
- Peninsula Medical School, Faculty of Health, Medicine, Dentistry and Human Sciences, University of Plymouth, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Felix Sahm
- Department of Neuropathology, Institute of Pathology, University Hospital Heidelberg, 69126, Heidelberg, Germany
| | - Claire L Adams
- Peninsula Medical School, Faculty of Health, Medicine, Dentistry and Human Sciences, University of Plymouth, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK
| | - Tadeja Urbanic-Purkart
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036, Graz, Austria
| | - Michael Khalil
- Department of Neurology, Medical University of Graz, Auenbruggerplatz 22, 8036, Graz, Austria
| | | | | | - Clemens Oliver Hanemann
- Peninsula Medical School, Faculty of Health, Medicine, Dentistry and Human Sciences, University of Plymouth, The John Bull Building, Plymouth Science Park, Research Way, Plymouth, PL6 8BU, UK.
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Kannapadi NV, Shah PP, Mathios D, Jackson CM. Synthesizing Molecular and Immune Characteristics to Move Beyond WHO Grade in Meningiomas: A Focused Review. Front Oncol 2022; 12:892004. [PMID: 35712492 PMCID: PMC9194503 DOI: 10.3389/fonc.2022.892004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/02/2022] [Indexed: 11/22/2022] Open
Abstract
No portion of this manuscript has previously been presented. Meningiomas, the most common primary intracranial tumors, are histologically categorized by the World Health Organization (WHO) grading system. While higher WHO grade is generally associated with poor clinical outcomes, a significant subset of grade I tumors recur or progress, indicating a need for more reliable models of meningioma behavior. Several groups have developed risk scores based on molecular or immunologic characteristics. These classification schemes show promise, with several models preliminarily demonstrating similar or superior accuracy to WHO grading. Improved understanding of immune system recognition and targeting of meningioma subtypes is necessary to advance the predictive power, as well as develop new therapies. Here, we characterize meningioma molecular drivers, predictive of recurrence and progression, and describe specific aspects of the immune response to meningiomas while highlighting critical questions and ongoing research. Relevant manuscripts of interest were identified using a systematic approach and synthesized into this focused review. Finally, we summarize the ongoing and completed clinical trials for immunotherapy in meningiomas and offer perspective on future directions.
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Affiliation(s)
- Nivedha V Kannapadi
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Pavan P Shah
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Dimitrios Mathios
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Christopher M Jackson
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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Inflammatory Tumor Microenvironment in Cranial Meningiomas: Clinical Implications and Intraindividual Reproducibility. Diagnostics (Basel) 2022; 12:diagnostics12040853. [PMID: 35453901 PMCID: PMC9029024 DOI: 10.3390/diagnostics12040853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/21/2022] [Accepted: 03/29/2022] [Indexed: 02/01/2023] Open
Abstract
The MIB-1 index was demonstrated to be significantly correlated to meningioma recurrence. However, to date, the relationship of the intraindividual course of the MIB-1 index and the growth fraction, respectively, to clinical tumor recurrence has not been demonstrated in cranial WHO grade 1 and 2 meningiomas. In the present paper, we compare the MIB-1 indices of 16 solely surgically treated primary meningiomas and their recurrent tumors regarding the course of the MIB-1 indices, time to recurrence, reproducibility and factors influencing the intraindividual MIB-1 indices. Regression analyses revealed (1) a strong intra-lab reproducibility (r = 0.88) of the MIB-1 index at the second versus the first operation, corresponding to a constant intrinsic growth activity of an individual meningioma, (2) a significant inverse correlation of both primary (r = −0.51) and secondary (r = −0.70) MIB-1 indices to time to recurrence, and (3) male sex, low plasma fibrinogen and diffuse CD68+ macrophage infiltrates contribute to an increase in the MIB-1 index. A strong intraindividual reproducibility of the MIB-1 index and a direct relationship of the MIB-1 index to the time to recurrence were observed. Individual MIB-1 indices might be used for tailored follow-up imaging intervals. Further research on the role of macrophages and inflammatory burden in the regrowth potential of meningiomas are needed.
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Maze EA, Agit B, Reeves S, Hilton DA, Parkinson DB, Laraba L, Ercolano E, Kurian KM, Hanemann CO, Belshaw RD, Ammoun S. Human endogenous retrovirus type K promotes proliferation and confers sensitivity to anti-retroviral drugs in Merlin-negative schwannoma and meningioma. Cancer Res 2021; 82:235-247. [PMID: 34853069 DOI: 10.1158/0008-5472.can-20-3857] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/04/2021] [Accepted: 11/15/2021] [Indexed: 11/16/2022]
Abstract
Deficiency of the tumour suppressor Merlin causes development of schwannoma, meningioma, and ependymoma tumours, which can occur spontaneously or in the hereditary disease neurofibromatosis type 2 (NF2). Merlin mutations are also relevant in a variety of other tumours. Surgery and radiotherapy are current first-line treatments; however, tumours frequently recur with limited treatment options. Here, we use human Merlin-negative schwannoma and meningioma primary cells to investigate the involvement of the endogenous retrovirus HERV-K in tumour development. HERV-K proteins previously implicated in tumorigenesis were overexpressed in schwannoma and all meningioma grades, and disease-associated CRL4DCAF1 and YAP/TEAD pathways were implicated in this overexpression. In normal Schwann cells, ectopic overexpression of HERV-K Env increased proliferation and upregulated expression of c-Jun and pERK1/2, which are key components of known tumorigenic pathways in schwannoma, JNK/c-Jun and RAS/RAF/MEK/ERK. Furthermore, FDA-approved retroviral protease inhibitors ritonavir, atazanavir, and lopinavir reduced proliferation of schwannoma and grade I meningioma cells. These results identify HERV-K as a critical regulator of progression in Merlin-deficient tumours and offer potential strategies for therapeutic intervention.
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Affiliation(s)
- Emmanuel A Maze
- School of Biomedical Sciences, Faculty of Health Medicine, Dentistry and Human Sciences, Plymouth University
| | - Bora Agit
- Faculty of Health Medicine, Dentistry and Human Sciences, Plymouth University
| | - Shona Reeves
- Faculty of Health Medicine, Dentistry and Human Sciences, Plymouth University
| | - David A Hilton
- Faculty of Health Medicine, Dentistry and Human Sciences, Plymouth University
| | - David B Parkinson
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry
| | - Liyam Laraba
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry
| | | | - Kathreena M Kurian
- Department of Neuropathology, Brain Tumour Research Group, Frenchay Hospital, University of Bristol
| | - C Oliver Hanemann
- Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry
| | | | - Sylwia Ammoun
- Faculty of Health Medicine, Dentistry and Human Sciences, Plymouth University
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10
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Yeung J, Yaghoobi V, Aung TN, Vesely MD, Zhang T, Gaule P, Gunel M, Rimm DL, Chen L. Spatially Resolved and Quantitative Analysis of the Immunological Landscape in Human Meningiomas. J Neuropathol Exp Neurol 2021; 80:150-159. [PMID: 33393633 DOI: 10.1093/jnen/nlaa152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The immunological status of human meningiomas is not well understood, hindering the development of rational immunotherapeutic strategies. We measured the levels of PD-L1, PD-L2, and immune cell subsets using multiplex quantitative immunofluorescence in a tissue microarray composed of 73 human meningiomas (56 WHO Grade 1, 13 WHO Grade 2, and 4 WHO Grade 3). We analyzed tumor-infiltrating immune cell populations, T-cell activation/dysfunction, and macrophage phenotypes. PD-L1 and PD-L2 were detected in 5.8% and 68.7% of cases, respectively. There was a higher PD-L1 expression in CD68+ macrophages compared with tumor cells (p < 0.001). There was a weak positive correlation between PD-L1 expression and CD3+ T-cell infiltration. The level of CD3+ cells and T-cell activation/proliferation in human meningiomas were highly variable with an increased CD4-to-CD8 ratio in higher grade tumors (p < 0.05). There was a stronger correlation between GZMB/Ki67 with PD-L2 than PD-L1. We found that 15.23%, 6.66%, and 5.49% of macrophages were CD163+, CD68+, and CD163+CD68+, respectively. In cases where there is high CD3+ T-cell infiltration, 23.5% and 76.5% had dormant and activated T-cell phenotypes, respectively. We conclude that human meningiomas are either PD-L1low TILlow or PD-L1low TILhigh tumors and harbor variable TIL infiltration and phenotypes.
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Affiliation(s)
- Jacky Yeung
- From the Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Vesal Yaghoobi
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Thazin N Aung
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Matthew D Vesely
- Department of Dermatology, Yale University School of Medicine, New Haven, Connecticut, USA.,Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Tianxiang Zhang
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Patricia Gaule
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Murat Gunel
- From the Department of Neurological Surgery, Yale University School of Medicine, New Haven, Connecticut, USA
| | - David L Rimm
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Lieping Chen
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
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11
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Keane L, Cheray M, Blomgren K, Joseph B. Multifaceted microglia - key players in primary brain tumour heterogeneity. Nat Rev Neurol 2021; 17:243-259. [PMID: 33692572 DOI: 10.1038/s41582-021-00463-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2021] [Indexed: 01/31/2023]
Abstract
Microglia are the resident innate immune cells of the immune-privileged CNS and, as such, represent the first line of defence against tissue injury and infection. Given their location, microglia are undoubtedly the first immune cells to encounter a developing primary brain tumour. Our knowledge of these cells is therefore important to consider in the context of such neoplasms. As the heterogeneous nature of the most aggressive primary brain tumours is thought to underlie their poor prognosis, this Review places a special emphasis on the heterogeneity of the tumour-associated microglia and macrophage populations present in primary brain tumours. Where available, specific information on microglial heterogeneity in various types and subtypes of brain tumour is included. Emerging evidence that highlights the importance of considering the heterogeneity of both the tumour and of microglial populations in providing improved treatment outcomes for patients is also discussed.
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Affiliation(s)
- Lily Keane
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, Stockholm, Sweden
| | - Mathilde Cheray
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, Stockholm, Sweden
| | - Klas Blomgren
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Department of Paediatric Oncology, Karolinska University Hospital, Stockholm, Sweden
| | - Bertrand Joseph
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, Stockholm, Sweden.
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Karimi S, Mansouri S, Nassiri F, Bunda S, Singh O, Brastianos PK, Dunn IF, Zadeh G. Clinical significance of checkpoint regulator "Programmed death ligand-1 (PD-L1)" expression in meningioma: review of the current status. J Neurooncol 2021; 151:443-449. [PMID: 33611710 PMCID: PMC7897616 DOI: 10.1007/s11060-020-03584-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/11/2020] [Indexed: 12/18/2022]
Abstract
Introduction Meningioma is the most common primary brain tumor. Most meningiomas are benign; however, a subset of these tumors can be aggressive, presenting with early or multiple tumor recurrences that are refractory to neurosurgical resection and radiotherapy. There is no standard systemic therapy for these patients, and post-surgical management of these patients is usually complicated due to lack of accurate prediction for tumor progression. Methods In this review, we summarise the crucial immunosuppressive role of checkpoint regulators, including PD-1 and PD-L1 interacting in the tumor microenvironment, which has led to efforts aimed at targeting this axis. Results Since their discovery, checkpoint inhibitors have significantly improved the outcome in many types of cancers. Currently, targeted therapy for PD-1 and PD-L1 proteins are being tested in several ongoing clinical trials for brain tumors such as glioblastoma. More recently, there have been some reports implicating increased PD-L1 expression in high-grade (WHO grades II and III) meningiomas. Several clinical trials are underway to assess the efficacy of checkpoint inhibitors in the therapeutic management of patients with aggressive meningiomas. Here, we review the immune suppressive microenvironment in meningiomas, and then focus on clinical and pathological characterization and tumor heterogeneity with respect to PD-L1 expression as well as challenges associated with the assessment of PD-L1 expression in meningioma. Conclusion We conclude with a brief review of ongoing clinical trials using checkpoint inhibitors for the treatment of high-grade and refractory meningiomas.
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Affiliation(s)
- Shirin Karimi
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada
| | - Sheila Mansouri
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada
| | - Farshad Nassiri
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada
- Division of Neurosurgery, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Severa Bunda
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada
| | - Olivia Singh
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada
| | | | - Ian F Dunn
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Gelareh Zadeh
- MacFeeters-Hamilton Center for Neuro-Oncology Research, Princess Margaret Cancer Center, 14-701, Toronto Medical Discovery Tower (TMDT), 101 College St, Toronto, ON, M5G 1L7, Canada.
- Division of Neurosurgery, University Health Network, University of Toronto, Toronto, ON, Canada.
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Fibulin-2: A Novel Biomarker for Differentiating Grade II from Grade I Meningiomas. Int J Mol Sci 2021; 22:ijms22020560. [PMID: 33429944 PMCID: PMC7827565 DOI: 10.3390/ijms22020560] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/21/2022] Open
Abstract
There is an unmet need for the identification of biomarkers to aid in the diagnosis, clinical management, prognosis and follow-up of meningiomas. There is currently no consensus on the optimum management of WHO grade II meningiomas. In this study, we identified the calcium binding extracellular matrix glycoprotein, Fibulin-2, via mass-spectrometry-based proteomics, assessed its expression in grade I and II meningiomas and explored its potential as a grade II biomarker. A total of 87 grade I and 91 grade II different meningioma cells, tissue and plasma samples were used for the various experimental techniques employed to assess Fibulin-2 expression. The tumours were reviewed and classified according to the 2016 edition of the Classification of the Tumours of the central nervous system (CNS). Mass spectrometry proteomic analysis identified Fibulin-2 as a differentially expressed protein between grade I and II meningioma cell cultures. Fibulin-2 levels were further evaluated in meningioma cells using Western blotting and Real-time Quantitative Polymerase Chain Reaction (RT-qPCR); in meningioma tissues via immunohistochemistry and RT-qPCR; and in plasma via Enzyme-Linked Immunosorbent Assay (ELISA). Proteomic analyses (p < 0.05), Western blotting (p < 0.05) and RT-qPCR (p < 0.01) confirmed significantly higher Fibulin-2 (FBLN2) expression levels in grade II meningiomas compared to grade I. Fibulin-2 blood plasma levels were also significantly higher in grade II meningioma patients compared to grade I patients. This study suggests that elevated Fibulin-2 might be a novel grade II meningioma biomarker, when differentiating them from the grade I tumours. The trend of Fibulin-2 expression observed in plasma may serve as a useful non-invasive biomarker.
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Garzon-Muvdi T, Bailey DD, Pernik MN, Pan E. Basis for Immunotherapy for Treatment of Meningiomas. Front Neurol 2020; 11:945. [PMID: 32982948 PMCID: PMC7483661 DOI: 10.3389/fneur.2020.00945] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 07/21/2020] [Indexed: 12/15/2022] Open
Abstract
Meningiomas are common tumors that account for approximately one third of CNS tumors diagnosed every year. They are classified by the World Health Organization in grades I-III. Higher grades have an increased rate of growth, invasiveness, rate of recurrence, and worse outcomes than lower grades. Most meningiomas are grade I, while ~18% of meningiomas are grade II and III in hospital-based series. Meningiomas are typically "benign" tumors that are treated with surgery and radiation. However, when they recur or are unresectable, treatment options are very limited, especially since they are chemotherapy-resistant. Recent advances in the treatment of cancers with immunotherapy have focused on checkpoint blockade as well as other types of immunotherapy. There is emerging evidence supporting the use of immunotherapy as a potentially effective treatment strategy for meningioma patients. The immune microenvironment of meningiomas is a complex interplay of genetic alterations, immunomodulatory protein expression, and tumor-immune cell interactions. Meningiomas are known to be infiltrated by immune cells including microglia, macrophages, B-cells, and T-cells. Several mechanisms contribute to decreased an ti-tumor immune response, allowing tumor growth and evasion of the immune system. We discuss the most current knowledge on the immune micro-environment of meningiomas, preclinical findings of immunotherapy in meningiomas, meningioma immunotherapy clinical trials, and also offer insight into future prospects for immunotherapies in meningiomas.
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Affiliation(s)
- Tomas Garzon-Muvdi
- Department of Neurosurgery, UT Southwestern Medical Center, Dallas, TX, United States
| | - Destiny D. Bailey
- Department of Neurosurgery, UT Southwestern Medical Center, Dallas, TX, United States
| | - Mark N. Pernik
- Department of Neurosurgery, UT Southwestern Medical Center, Dallas, TX, United States
| | - Edward Pan
- Department of Neurology, UT Southwestern Medical Center, Dallas, TX, United States
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