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Xu C, Xiao M, Li X, Xin L, Song J, Zhan Q, Wang C, Zhang Q, Yuan X, Tan Y, Fang C. Origin, activation, and targeted therapy of glioma-associated macrophages. Front Immunol 2022; 13:974996. [PMID: 36275720 PMCID: PMC9582955 DOI: 10.3389/fimmu.2022.974996] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 09/22/2022] [Indexed: 12/02/2022] Open
Abstract
The glioma tumor microenvironment plays a crucial role in the development, occurrence, and treatment of gliomas. Glioma-associated macrophages (GAMs) are the most widely infiltrated immune cells in the tumor microenvironment (TME) and one of the major cell populations that exert immune functions. GAMs typically originate from two cell types-brain-resident microglia (BRM) and bone marrow-derived monocytes (BMDM), depending on a variety of cytokines for recruitment and activation. GAMs mainly contain two functionally and morphologically distinct activation types- classically activated M1 macrophages (antitumor/immunostimulatory) and alternatively activated M2 macrophages (protumor/immunosuppressive). GAMs have been shown to affect multiple biological functions of gliomas, including promoting tumor growth and invasion, angiogenesis, energy metabolism, and treatment resistance. Both M1 and M2 macrophages are highly plastic and can polarize or interconvert under various malignant conditions. As the relationship between GAMs and gliomas has become more apparent, GAMs have long been one of the promising targets for glioma therapy, and many studies have demonstrated the therapeutic potential of this target. Here, we review the origin and activation of GAMs in gliomas, how they regulate tumor development and response to therapies, and current glioma therapeutic strategies targeting GAMs.
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Affiliation(s)
- Can Xu
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
| | - Menglin Xiao
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
| | - Xiang Li
- Hebei University School of Basic Medical Sciences, Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China
| | - Lei Xin
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
| | - Jia Song
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
- Hebei University School of Basic Medical Sciences, Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China
| | - Qi Zhan
- Tianjin Key Laboratory of Composite and Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin, China
| | - Changsheng Wang
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
| | - Qisong Zhang
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
| | - Xiaoye Yuan
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
- Hebei University School of Basic Medical Sciences, Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China
| | - Yanli Tan
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
- Hebei University School of Basic Medical Sciences, Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China
- *Correspondence: Chuan Fang, ; Yanli Tan,
| | - Chuan Fang
- School of Clinical Medicine, Hebei University, Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China
- Hebei Key Laboratory of Precise Diagnosis and Treatment of Glioma, Baoding, China
- *Correspondence: Chuan Fang, ; Yanli Tan,
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Menna G, Mattogno PP, Donzelli CM, Lisi L, Olivi A, Della Pepa GM. Glioma-Associated Microglia Characterization in the Glioblastoma Microenvironment through A ‘Seed-and Soil’ Approach: A Systematic Review. Brain Sci 2022; 12:brainsci12060718. [PMID: 35741603 PMCID: PMC9220868 DOI: 10.3390/brainsci12060718] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 12/04/2022] Open
Abstract
Background and aim: Ever since the discovery of tumor-associated immune cells, there has been growing interest in the understanding of the mechanisms underlying the crosstalk between these cells and tumor cells. A “seed and soil” approach has been recently introduced to describe the glioblastoma (GBM) landscape: tumor microenvironments act as fertile “soil” and interact with the “seed” (glial and stem cells compartment). In the following article, we provide a systematic review of the current evidence pertaining to the characterization of glioma-associated macrophages and microglia (GAMs) and microglia and macrophage cells in the glioma tumor microenvironment (TME). Methods: An online literature search was launched on PubMed Medline and Scopus using the following research string: “((Glioma associated macrophages OR GAM OR Microglia) AND (glioblastoma tumor microenvironment OR TME))”. The last search for articles pertinent to the topic was conducted in February 2022. Results: The search of the literature yielded a total of 349 results. A total of 235 studies were found to be relevant to our research question and were assessed for eligibility. Upon a full-text review, 58 articles were included in the review. The reviewed papers were further divided into three categories based on their focus: (1) Microglia maintenance of immunological homeostasis and protection against autoimmunity; (2) Microglia crosstalk with dedifferentiated and stem-like glioblastoma cells; (3) Microglia migratory behavior and its activation pattern. Conclusions: Aggressive growth, inevitable recurrence, and scarce response to immunotherapies are driving the necessity to focus on the GBM TME from a different perspective to possibly disentangle its role as a fertile ‘soil’ for tumor progression and identify within it feasible therapeutic targets. Against this background, our systematic review confirmed microglia to play a paramount role in promoting GBM progression and relapse after treatments. The correct and extensive understanding of microglia–glioma crosstalk could help in understanding the physiopathology of this complex disease, possibly opening scenarios for improvement of treatments.
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Affiliation(s)
- Grazia Menna
- Institute of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.M.); (P.P.M.); (C.M.D.); (A.O.)
| | - Pier Paolo Mattogno
- Institute of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.M.); (P.P.M.); (C.M.D.); (A.O.)
| | - Carlo Maria Donzelli
- Institute of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.M.); (P.P.M.); (C.M.D.); (A.O.)
| | - Lucia Lisi
- Institute of Pharmacology, Catholic University of Rome, 00168 Rome, Italy;
| | - Alessandro Olivi
- Institute of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.M.); (P.P.M.); (C.M.D.); (A.O.)
| | - Giuseppe Maria Della Pepa
- Institute of Neurosurgery, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (G.M.); (P.P.M.); (C.M.D.); (A.O.)
- Correspondence: ; Tel.: +39-0630154120
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3
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Crosstalk between β-Catenin and CCL2 Drives Migration of Monocytes towards Glioblastoma Cells. Int J Mol Sci 2022; 23:ijms23094562. [PMID: 35562953 PMCID: PMC9101913 DOI: 10.3390/ijms23094562] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 02/06/2023] Open
Abstract
Isocitrate dehydrogenase (IDH)-wildtype glioblastoma (GBM) is a fast growing and highly heterogeneous tumor, often characterized by the presence of glioblastoma stem cells (GSCs). The plasticity of GSCs results in therapy resistance and impairs anti-tumor immune response by influencing immune cells in the tumor microenvironment (TME). Previously, β-catenin was associated with stemness in GBM as well as with immune escape mechanisms. Here, we investigated the effect of β-catenin on attracting monocytes towards GBM cells. In addition, we evaluated whether CCL2 is involved in β-catenin crosstalk between monocytes and tumor cells. Our analysis revealed that shRNA targeting β-catenin in GBMs reduces monocytes attraction and impacts CCL2 secretion. The addition of recombinant CCL2 restores peripheral blood mononuclear cells (PBMC) migration towards medium (TCM) conditioned by shβ-catenin GBM cells. CCL2 knockdown in GBM cells shows similar effects and reduces monocyte migration to a similar extent as β-catenin knockdown. When investigating the effect of CCL2 on β-catenin activity, we found that CCL2 modulates components of the Wnt/β-catenin pathway and alters the clonogenicity of GBM cells. In addition, the pharmacological β-catenin inhibitor MSAB reduces active β-catenin, downregulates the expression of associated genes and alters CCL2 secretion. Taken together, we showed that β-catenin plays an important role in attracting monocytes towards GBM cells in vitro. We hypothesize that the interactions between β-catenin and CCL2 contribute to maintenance of GSCs via modulating immune cell interaction and promoting GBM growth and recurrence.
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Immune Landscape in PTEN-Related Glioma Microenvironment: A Bioinformatic Analysis. Brain Sci 2022; 12:brainsci12040501. [PMID: 35448032 PMCID: PMC9029006 DOI: 10.3390/brainsci12040501] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/30/2022] [Accepted: 04/12/2022] [Indexed: 02/04/2023] Open
Abstract
Introduction: PTEN gene mutations are frequently found in the genetic landscape of high-grade gliomas since they influence cell proliferation, proangiogenetic pathways, and antitumoral immune response. The present bioinformatics analysis explores the PTEN gene expression profile in HGGs as a prognostic factor for survival, especially focusing on the related immune microenvironment. The effects of PTEN mutation on the susceptibility to conventional chemotherapy were also investigated. Methods: Clinical and genetic data of GBMs and normal tissue samples were acquired from The Cancer Genome Atlas (TCGA)-GBM and Genotype-Tissue Expression (GTEx) online databases, respectively. The genetic differential expressions were analyzed in both groups via the one-way ANOVA test. Kaplan−Meier survival curves were applied to estimate the overall survival (OS) and disease-free survival (DFS). The Genomics of Drug Sensitivity in Cancer platform was chosen to assess the response of PTEN-mutated GBMs to temozolomide (TMZ). p < 0.05 was fixed as statistically significant. On Tumor Immune Estimation Resource and Gene Expression Profiling Interactive Analysis databases, the linkage between immune cell recruitment and PTEN status was assessed through Spearman’s correlation analysis. Results: PTEN was found mutated in 22.2% of the 617 TCGA-GBMs patients, with a higher log2-transcriptome per million reads compared to the GTEx group (255 samples). Survival curves revealed a worse OS and DFS, albeit not significant, for the high-PTEN profile GBMs. Spearman’s analysis of immune cells demonstrated a strong positive correlation between the PTEN status and infiltration of Treg (ρ = 0.179) and M2 macrophages (ρ = 0.303). The half-maximal inhibitor concentration of TMZ was proven to be lower for PTEN-mutated GBMs compared with PTEN wild-types. Conclusions: PTEN gene mutations prevail in GBMs and are strongly related to poor prognosis and least survival. The infiltrating immune lymphocytes Treg and M2 macrophages populate the glioma microenvironment and control the mechanisms of tumor progression, immune escape, and sensitivity to standard chemotherapy. Broader studies are required to confirm these findings and turn them into new therapeutic perspectives.
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Challenges and Opportunities for Immunotherapeutic Intervention against Myeloid Immunosuppression in Glioblastoma. J Clin Med 2022; 11:jcm11041069. [PMID: 35207340 PMCID: PMC8880446 DOI: 10.3390/jcm11041069] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/05/2022] [Accepted: 02/10/2022] [Indexed: 12/25/2022] Open
Abstract
Glioblastoma multiforme (GBM), the most common and deadly brain cancer, exemplifies the paradigm that cancers grow with help from an immunosuppressive tumor microenvironment (TME). In general, TME includes a large contribution from various myeloid lineage-derived cell types, including (in the brain) altered pathogenic microglia as well as monocyte-macrophages (Macs), myeloid-derived suppressor cells (MDSC) and dendritic cell (DC) populations. Each can have protective roles, but has, by definition, been coopted by the tumor in patients with progressive disease. However, evidence demonstrates that myeloid immunosuppressive activities can be reversed in different ways, leading to enthusiasm for this therapeutic approach, both alone and in combination with potentially synergistic immunotherapeutic and other strategies. Here, we review the current understanding of myeloid cell immunosuppression of anti-tumor responses as well as potential targets, challenges, and developing means to reverse immunosuppression with various therapeutics and their status. Targets include myeloid cell colony stimulating factors (CSFs), insulin-like growth factor 1 (IGF1), several cytokines and chemokines, as well as CD40 activation and COX2 inhibition. Approaches in clinical development include antibodies, antisense RNA-based drugs, cell-based combinations, polarizing cytokines, and utilizing Macs as a platform for Chimeric Antigen Receptors (CAR)-based tumor targeting, like with CAR-T cells. To date, promising clinical results have been reported with several of these approaches.
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6
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Pediatric glioblastoma: mechanisms of immune evasion and potential therapeutic opportunities. Cancer Immunol Immunother 2022; 71:1813-1822. [PMID: 35020009 DOI: 10.1007/s00262-021-03131-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 12/09/2021] [Indexed: 12/13/2022]
Abstract
Pediatric glioblastoma is relatively rare compared with its adult counterpart but is associated with a similarly grim prognosis. Available data indicate that pediatric glioblastomas are molecularly distinct from adult tumors, and relatively little is known about the pediatric glioblastoma tumor microenvironment (TME). Cancer immunotherapy has emerged as a new pillar of cancer treatment and is revolutionizing the care of patients with many advanced solid tumors, including melanoma, non-small cell lung cancer, head and neck cancer, and renal cell carcinoma. Unfortunately, attempts to treat adult glioblastoma with current immunotherapies have had limited success to date. Nevertheless, the immune milieu in pediatric glioblastoma is distinct from that found in adult tumors, and evidence suggests that pediatric tumors are less immunosuppressive. As a result, immunotherapies should be specifically evaluated in the pediatric context. The purpose of this review is to explore known and emerging mechanisms of immune evasion in pediatric glioblastoma and highlight potential opportunities for implementing immunotherapy in the treatment of these devastating pediatric brain tumors.
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Kemmerer CL, Schittenhelm J, Dubois E, Neumann L, Häsler LM, Lambert M, Renovanz M, Kaeser SA, Tabatabai G, Ziemann U, Naumann U, Kowarik MC. Cerebrospinal fluid cytokine levels are associated with macrophage infiltration into tumor tissues of glioma patients. BMC Cancer 2021; 21:1108. [PMID: 34654395 PMCID: PMC8520299 DOI: 10.1186/s12885-021-08825-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 10/01/2021] [Indexed: 12/24/2022] Open
Abstract
Background Diffuse gliomas are the most common malignant tumors of the central nervous system with poor treatment efficacy. Infiltration of immune cells into tumors during immunosurveillance is observed in multiple tumor entities and often associated with a favorable outcome. The aim of this study was to evaluate the infiltration of immune cells in gliomas and their association with cerebrospinal fluid (CSF) cytokine concentrations. Methods We applied immunohistochemistry in tumor tissue sections of 18 high-grade glioma (HGG) patients (4 anaplastic astrocytoma, IDH-wildtype WHO-III; 14 glioblastomas (GBM), IDH-wildtype WHO-IV) in order to assess and quantify leucocytes (CD45) and macrophages (CD68, CD163) within the tumor core, infiltration zone and perivascular spaces. In addition, we quantified the concentrations of 30 cytokines in the same patients’ CSF and in 14 non-inflammatory controls. Results We observed a significantly higher percentage of CD68+ macrophages (21–27%) in all examined tumor areas when compared to CD45+ leucocytes (ca. 3–7%); CD163+ cell infiltration was between 5 and 15%. Compared to the tumor core, significantly more macrophages and leucocytes were detectable within the perivascular area. The brain parenchyma showing a lower tumor cell density seems to be less infiltrated by macrophages. Interleukin (IL)-7 was significantly downregulated in CSF of GBM patients compared to controls. Additionally, CD68+ macrophage infiltrates showed significant correlations with the expression of eotaxin, interferon-γ, IL-1β, IL-2, IL-10, IL-13, IL-16 and vascular endothelial growth factor. Conclusions Our findings suggest that the infiltration of lymphocytes is generally low in HGG, and does not correlate with cytokine concentrations in the CSF. In contrast, macrophage infiltrates in HGG are associated with CSF cytokine changes that possibly shape the tumor microenvironment. Although results point towards an escape from immunosurveillance or even exploitation of immune cells by HGG, further studies are necessary to decipher the exact role of the immune system in these tumors. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08825-1.
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Affiliation(s)
- Constanze L Kemmerer
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany
| | - Jens Schittenhelm
- Department of Pathology and Neuropathology, University Hospital Tübingen, Calwerstr. 3, Tübingen, Germany.,Center for Neuro-Oncology, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tübingen, Germany.,German Cancer Consortium (DKTK), DKFZ partner site Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Evelyn Dubois
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany
| | - Laura Neumann
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany
| | - Lisa M Häsler
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, Eberhard-Karls University of Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), Otfried-Müller-Straße 23, Tübingen, Germany
| | - Marius Lambert
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, Eberhard-Karls University of Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), Otfried-Müller-Straße 23, Tübingen, Germany
| | - Mirjam Renovanz
- Center for Neuro-Oncology, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tübingen, Germany.,Department of Neurology and Interdisciplinary Neuro-Oncology, Hertie Institute for Clinical Brain Research, Eberhard-Karls University of Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany.,Department of Neurosurgery, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Stephan A Kaeser
- Department of Cellular Neurology, Hertie Institute for Clinical Brain Research, Eberhard-Karls University of Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), Otfried-Müller-Straße 23, Tübingen, Germany
| | - Ghazaleh Tabatabai
- Center for Neuro-Oncology, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tübingen, Germany.,German Cancer Consortium (DKTK), DKFZ partner site Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany.,Department of Neurology and Interdisciplinary Neuro-Oncology, Hertie Institute for Clinical Brain Research, Eberhard-Karls University of Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany
| | - Ulf Ziemann
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany.,Department of Neurology & Stroke, Eberhard-Karls University Tübingen, Tübingen, Germany
| | - Ulrike Naumann
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany
| | - Markus C Kowarik
- Department of Vascular Neurology, Hertie-Institute for Clinical Brain Research, Eberhard-Karls University Tübingen, Otfried-Müller-Straße 27, Tübingen, Germany. .,Department of Neurology & Stroke, Eberhard-Karls University Tübingen, Tübingen, Germany. .,Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, Munich, Germany.
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Goldshmit Y, Perelroizen R, Yakovchuk A, Banyas E, Mayo L, David S, Benbenishty A, Blinder P, Shalom M, Ruban A. Blood glutamate scavengers increase pro-apoptotic signaling and reduce metastatic melanoma growth in-vivo. Sci Rep 2021; 11:14644. [PMID: 34282238 PMCID: PMC8290021 DOI: 10.1038/s41598-021-94183-8] [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: 01/20/2021] [Accepted: 07/06/2021] [Indexed: 11/09/2022] Open
Abstract
Inhibition of extracellular glutamate (Glu) release decreases proliferation and invasion, induces apoptosis, and inhibits melanoma metastatic abilities. Previous studies have shown that Blood-glutamate scavenging (BGS), a novel treatment approach, has been found to be beneficial in attenuating glioblastoma progression by reducing brain Glu levels. Therefore, in this study we evaluated the ability of BGS treatment to inhibit brain metastatic melanoma progression in-vivo. RET melanoma cells were implanted in C56BL/6J mice to induce brain melanoma tumors followed by treatment with BGS or vehicle administered for fourteen days. Bioluminescent imaging was conducted to evaluate tumor growth, and plasma/CSF Glu levels were monitored throughout. Immunofluorescence staining of Ki67 and 53BP1 was used to analyze tumor cell proliferation and DNA double-strand breaks. In addition, we analyzed CD8, CD68, CD206, p-STAT1 and iNOS expression to evaluate alterations in tumor micro-environment and anti-tumor immune response due to treatment. Our results show that BGS treatment reduces CSF Glu concentration and consequently melanoma growth in-vivo by decreasing tumor cell proliferation and increasing pro-apoptotic signaling in C56BL/6J mice. Furthermore, BGS treatment supported CD8+ cell recruitment and CD68+ macrophage invasion. These findings suggest that BGS can be of potential therapeutic relevance in the treatment of metastatic melanoma.
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Affiliation(s)
- Yona Goldshmit
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel.,Australian Regenerative Medicine Institute, Monash Biotechnology, 15 Innovation Walk, Clayton, VIC, 3800, Australia
| | - Rita Perelroizen
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Alex Yakovchuk
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel
| | - Evgeni Banyas
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel
| | - Lior Mayo
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Sari David
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel
| | - Amit Benbenishty
- Department of Biological Regulation, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Pablo Blinder
- Sagol School of Neuroscience, Tel Aviv University, 6997801, Tel Aviv, Israel.,Neurobiology Department, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Moshe Shalom
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel
| | - Angela Ruban
- Steyer School of Health Professions, Sackler Faculty of Medicine, Tel-Aviv University, P.O. Box 39040, 6997801, Tel Aviv, Israel. .,Sagol School of Neuroscience, Tel Aviv University, 6997801, Tel Aviv, Israel.
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9
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Krane GA, O'Dea CA, Malarkey DE, Miller AD, Miller CR, Tokarz DA, Jensen HL, Janardhan KS, Shockley KR, Flagler N, Rainess BA, Mariani CL. Immunohistochemical evaluation of immune cell infiltration in canine gliomas. Vet Pathol 2021; 58:952-963. [PMID: 34196247 DOI: 10.1177/03009858211023946] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Evasion of the immune response is an integral part of the pathogenesis of glioma. In humans, important mechanisms of immune evasion include recruitment of regulatory T cells (Tregs) and polarization of macrophages toward an M2 phenotype. Canine glioma has a robust immune cell infiltrate that has not been extensively characterized. The purpose of this study was to determine the distribution of immune cells infiltrating spontaneous intracranial canine gliomas. Seventy-three formalin-fixed, paraffin-embedded tumor samples were evaluated using immunohistochemistry for CD3, forkhead box 3 (FOXP3), CD20, Iba1, calprotectin (Mac387), CD163, and indoleamine 2,3-dioxygenase (IDO). Immune cell infiltration was present in all tumors. Low-grade and high-grade gliomas significantly differed in the numbers of FoxP3+ cells, Mac387+ cells, and CD163+ cells (P = .006, .01, and .01, respectively). Considering all tumors, there was a significant increase in tumor area fraction of CD163 compared to Mac387 (P < .0001), and this ratio was greater in high-grade tumors than in low-grade tumors (P = .005). These data warrant further exploration into the roles of macrophage repolarization or Treg interference therapy in canine glioma.
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Affiliation(s)
- Gregory A Krane
- 6857National Institute of Environmental Health Sciences, National Toxicology Program, Cellular and Molecular Pathology Branch, Research Triangle Park, NC, USA.,Department of Clinical Sciences, North Carolina State University, Raleigh, NC, USA.,Comparative Neuroimmunology and Neuro-Oncology Laboratory, North Carolina State University, Raleigh, NC, USA
| | | | - David E Malarkey
- 6857National Institute of Environmental Health Sciences, National Toxicology Program, Cellular and Molecular Pathology Branch, Research Triangle Park, NC, USA
| | | | | | - Debra A Tokarz
- Experimental Pathology Laboratories Inc, Research Triangle Park, NC, USA
| | - Heather L Jensen
- 6857National Institute of Environmental Health Sciences, National Toxicology Program, Cellular and Molecular Pathology Branch, Research Triangle Park, NC, USA
| | | | - Keith R Shockley
- Division of Intramural Research, Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Norris Flagler
- 6857National Institute of Environmental Health Sciences, National Toxicology Program, Cellular and Molecular Pathology Branch, Research Triangle Park, NC, USA
| | - Brittani A Rainess
- Comparative Neuroimmunology and Neuro-Oncology Laboratory, North Carolina State University, Raleigh, NC, USA
| | - Christopher L Mariani
- Comparative Neuroimmunology and Neuro-Oncology Laboratory, North Carolina State University, Raleigh, NC, USA
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10
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Chen JWE, Lumibao J, Leary S, Sarkaria JN, Steelman AJ, Gaskins HR, Harley BAC. Crosstalk between microglia and patient-derived glioblastoma cells inhibit invasion in a three-dimensional gelatin hydrogel model. J Neuroinflammation 2020; 17:346. [PMID: 33208156 PMCID: PMC7677841 DOI: 10.1186/s12974-020-02026-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/05/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Glioblastoma is the most common and deadly form of primary brain cancer, accounting for more than 13,000 new diagnoses annually in the USA alone. Microglia are the innate immune cells within the central nervous system, acting as a front-line defense against injuries and inflammation via a process that involves transformation from a quiescent to an activated phenotype. Crosstalk between GBM cells and microglia represents an important axis to consider in the development of tissue engineering platforms to examine pathophysiological processes underlying GBM progression and therapy. METHODS This work used a brain-mimetic hydrogel system to study patient-derived glioblastoma specimens and their interactions with microglia. Here, glioblastoma cells were either cultured alone in 3D hydrogels or in co-culture with microglia in a manner that allowed secretome-based signaling but prevented direct GBM-microglia contact. Patterns of GBM cell invasion were quantified using a three-dimensional spheroid assay. Secretome and transcriptome (via RNAseq) were used to profile the consequences of GBM-microglia interactions. RESULTS Microglia displayed an activated phenotype as a result of GBM crosstalk. Three-dimensional migration patterns of patient-derived glioblastoma cells showed invasion was significantly decreased in response to microglia paracrine signaling. Potential molecular mechanisms underlying with this phenotype were identified from bioinformatic analysis of secretome and RNAseq data. CONCLUSION The data demonstrate a tissue engineered hydrogel platform can be used to investigate crosstalk between immune cells of the tumor microenvironment related to GBM progression. Such multi-dimensional models may provide valuable insight to inform therapeutic innovations to improve GBM treatment.
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Affiliation(s)
- Jee-Wei Emily Chen
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jan Lumibao
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Current Address: Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Sarah Leary
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
| | - Andrew J Steelman
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - H Rex Gaskins
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Brendan A C Harley
- Department of Chemical & Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA.
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11
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Zhao L, Tang Y, Lei N, Zhou D, Chen B, Gan T, Yang X, Zhang Y. Clinical features and monocyte/macrophage subsets characterization in granulomatous vs non-granulomatous Crohn's disease. Scand J Gastroenterol 2020; 55:442-448. [PMID: 32285715 DOI: 10.1080/00365521.2020.1748222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Aims: Granuloma, mainly composed of macrophages, is a histological feature of Crohn's disease (CD). However, its significance in CD has not been investigated adequately. Our study aims to address this issue by comparing the clinical manifestations and monocyte/macrophage subtypes between granulomatous and non-granulomatous CD.Materials and methods: Demographics, symptoms, endoscopic manifestations, histopathological features, and Montreal classification of patients with and without granulomas were compared. Flow cytometry was used to determine the phagocytosis and subsets of monocytes. ELISA was used to measure the plasma levels of TNF-α, IL-6, IL-1β, IL-10, CCL22, and TGF-β1. Immunohistochemistry was performed to quantify the expression of CD68, CD163 and iNOS.Results: Of the222 CD patients enrolled, granulomas were detected in 90. Compared with non-granulomatous CD patients, those with granulomas had younger age, increased rates of diarrhea and perianal complications, along with higher endoscopic score. Intestinal stenosis and crypt abscess were more frequently observed in granulomatous CD patients. A defective phagocytosis of monocytes was observed in granulomatous CD patients. Meanwhile, higher percentages of intermediate and non-classic monocytes, with a lower percentage of classic monocyte were found in them. Besides, they had higher levels of TGF-β1 and IL-10, a lower level of TNF-α, an increased ratio of CD163+/CD68+cells, and a decreased ratio of iNOS+/CD68+ cells.Conclusions: Granulomatous CD patients exhibited different manifestations compared with their non-granulomatous counterparts. More aggressive therapy may be needed in granulomatous CD patients. Furthermore, the heterogeneity of monocyte/macrophage subsets and altered plasma cytokine may underlie the difference between those two groups.
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Affiliation(s)
- Li Zhao
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Tang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Na Lei
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Dandan Zhou
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Bingrun Chen
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Gan
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoli Yang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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12
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Presta I, Donato A, Zaffino P, Spadea MF, Mancuso T, Malara N, Chiefari E, Donato G. Does a polarization state exist for mast cells in cancer? Med Hypotheses 2019; 131:109281. [PMID: 31443770 DOI: 10.1016/j.mehy.2019.109281] [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: 04/03/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 12/19/2022]
Abstract
The data of literature are discordant about the role of mast cells in different types of neoplasms. In this paper the authors propose the hypothesis that tumor-associated mast cells may switch to different polarization states, conditioning the immunogenic capacities of the different neoplasms. Anti-inflammatory polarized mast cells should express cytokines such as interleukin-10 (IL-10) and then mast cells number should be inversely related to the intensity of inflammatory infiltrate. On the contrary, when mast cells do not express anti-inflammatory cytokines their number should be directly related to the intensity of the inflammatory infiltrate. In this paper we briefly argue around feasible approaches, based on the retrospective studies of tumor tissue samples from neoplasms considered "immunologically hot" and neoplasms considered "immunologically cold", through immunohistochemistry and immunofluorescence techniques (confocal microscopy). The establishment of the actual existence of a polarization interchange of mast cells, could lead to a new vision in prognostic terms, useful to contrive new approaches in immunotherapy of tumors.
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Affiliation(s)
- Ivan Presta
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy.
| | - Annalidia Donato
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Paolo Zaffino
- Department of Clinical and Experimental Medicine, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Maria Francesca Spadea
- Department of Clinical and Experimental Medicine, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Teresa Mancuso
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Natalia Malara
- Department of Medical and Surgical Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Eusebio Chiefari
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy
| | - Giuseppe Donato
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Catanzaro, Italy
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13
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The Role of Brain Vasculature in Glioblastoma. Mol Neurobiol 2019; 56:6645-6653. [DOI: 10.1007/s12035-019-1561-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 03/13/2019] [Indexed: 01/16/2023]
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14
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Zeiner PS, Preusse C, Golebiewska A, Zinke J, Iriondo A, Muller A, Kaoma T, Filipski K, Müller-Eschner M, Bernatz S, Blank AE, Baumgarten P, Ilina E, Grote A, Hansmann ML, Verhoff MA, Franz K, Feuerhake F, Steinbach JP, Wischhusen J, Stenzel W, Niclou SP, Harter PN, Mittelbronn M. Distribution and prognostic impact of microglia/macrophage subpopulations in gliomas. Brain Pathol 2019; 29:513-529. [PMID: 30506802 PMCID: PMC6849857 DOI: 10.1111/bpa.12690] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/14/2018] [Indexed: 12/28/2022] Open
Abstract
While the central nervous system is considered an immunoprivileged site and brain tumors display immunosuppressive features, both innate and adaptive immune responses affect glioblastoma (GBM) growth and treatment resistance. However, the impact of the major immune cell population in gliomas, represented by glioma‐associated microglia/macrophages (GAMs), on patients’ clinical course is still unclear. Thus, we aimed at assessing the immunohistochemical expression of selected microglia and macrophage markers in 344 gliomas (including gliomas from WHO grade I–IV). Furthermore, we analyzed a cohort of 241 IDH1R132H‐non‐mutant GBM patients for association of GAM subtypes and patient overall survival. Phenotypical properties of GAMs, isolated from high‐grade astrocytomas by CD11b‐based magnetic cell sorting, were analyzed by immunocytochemistry, mRNA microarray, qRT‐PCR and bioinformatic analyses. A higher amount of CD68‐, CD163‐ and CD206‐positive GAMs in the vital tumor core was associated with beneficial patient survival. The mRNA expression profile of GAMs displayed an upregulation of factors that are considered as pro‐inflammatory M1 (eg, CCL2, CCL3L3, CCL4, PTGS2) and anti‐inflammatory M2 polarization markers (eg, MRC1, LGMN, CD163, IL10, MSR1), the latter rather being associated with phagocytic functions in the GBM microenvironment. In summary, we present evidence that human GBMs contain mixed M1/M2‐like polarized GAMs and that the levels of different GAM subpopulations in the tumor core are positively associated with overall survival of patients with IDH1R132H‐non‐mutant GBMs.
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Affiliation(s)
- Pia S Zeiner
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,Department of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Corinna Preusse
- Department of Neuropathology, Charité Berlin, Berlin, Germany
| | - Anna Golebiewska
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg
| | - Jenny Zinke
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Ane Iriondo
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Arnaud Muller
- Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg
| | - Tony Kaoma
- Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg
| | - Katharina Filipski
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Monika Müller-Eschner
- Institute of Neuroradiology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Simon Bernatz
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Anna-Eva Blank
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Peter Baumgarten
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,Department of Neurosurgery, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Elena Ilina
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg.,Luxembourg Centre of Neuropathology (LCNP), Luxembourg
| | - Anne Grote
- Institute of Pathology and Neuropathology, Medical University Hannover, Hannover, Germany
| | - Martin L Hansmann
- Senckenberg Institute of Pathology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Marcel A Verhoff
- Institute of Legal Medicine, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Kea Franz
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, Frankfurt am Main, Germany.,Department of Neurosurgery, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Friedrich Feuerhake
- Institute of Pathology and Neuropathology, Medical University Hannover, Hannover, Germany.,Institute of Neuropathology, University Clinic Freiburg, Freiburg, Germany
| | - Joachim P Steinbach
- Dr. Senckenberg Institute of Neurooncology, Goethe University Frankfurt, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jörg Wischhusen
- Department of Gynecology, University of Wuerzburg, Wuerzburg, Germany
| | - Werner Stenzel
- Department of Neuropathology, Charité Berlin, Berlin, Germany
| | - Simone P Niclou
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg.,KG Jebsen Brain Tumour Research Center, Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Patrick N Harter
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michel Mittelbronn
- Edinger Institute, Institute of Neurology, Goethe University Frankfurt, Frankfurt am Main, Germany.,NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg.,German Cancer Consortium (DKTK), Heidelberg, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany.,Luxembourg Centre of Neuropathology (LCNP), Luxembourg.,Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Luxembourg.,Laboratoire national de santé (LNS), Dudelange, Luxembourg
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15
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Zhu C, Kros JM, Cheng C, Mustafa D. The contribution of tumor-associated macrophages in glioma neo-angiogenesis and implications for anti-angiogenic strategies. Neuro Oncol 2018; 19:1435-1446. [PMID: 28575312 DOI: 10.1093/neuonc/nox081] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
"Tumor-associated macrophages" (TAMs) form a significant cell population in malignant tumors and contribute to tumor growth, metastasis, and neovascularization. Gliomas are characterized by extensive neo-angiogenesis, and knowledge of the role of TAMs in neovascularization is important for future anti-angiogenic therapies. The phenotypes and functions of TAMs are heterogeneous and more complex than a classification into M1 and M2 inflammation response types would suggest. In this review, we provide an update on the current knowledge of the ontogeny of TAMs, focusing on diffuse gliomas. The role of TAMs in the regulation of the different processes in tumor angiogenesis is highlighted and the most recently discovered mechanisms by which TAMs mediate resistance against current antivascular therapies are mentioned. Novel compounds tested in clinical trials are discussed and brought in relation to different TAM-related angiogenesis pathways. In addition, potential therapeutic targets used to intervene in TAM-regulated tumor angiogenesis are summarized.
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Affiliation(s)
- Changbin Zhu
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Johan M Kros
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Caroline Cheng
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Dana Mustafa
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
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16
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Guadagno E, Presta I, Maisano D, Donato A, Pirrone CK, Cardillo G, Corrado SD, Mignogna C, Mancuso T, Donato G, Del Basso De Caro M, Malara N. Role of Macrophages in Brain Tumor Growth and Progression. Int J Mol Sci 2018; 19:ijms19041005. [PMID: 29584702 PMCID: PMC5979398 DOI: 10.3390/ijms19041005] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/10/2018] [Accepted: 03/23/2018] [Indexed: 12/16/2022] Open
Abstract
The role of macrophages in the growth and the progression of tumors has been extensively studied in recent years. A large body of data demonstrates that macrophage polarization plays an essential role in the growth and progression of brain tumors, such as gliomas, meningiomas, and medulloblastomas. The brain neoplasm cells have the ability to influence the polarization state of the tumor associated macrophages. In turn, innate immunity cells have a decisive role through regulation of the acquired immune response, but also through humoral cross-talking with cancer cells in the tumor microenvironment. Neoangiogenesis, which is an essential element in glial tumor progression, is even regulated by the tumor associated macrophages, whose activity is linked to other factors, such as hypoxia. In addition, macrophages play a decisive role in establishing the entry into the bloodstream of cancer cells. As is well known, the latter phenomenon is also present in brain tumors, even if they only rarely metastasize. Looking ahead in the future, we can imagine that characterizing the relationships between tumor and tumor associated macrophage, as well as the study of circulating tumor cells, could give us useful tools in prognostic evaluation and therapy. More generally, the study of innate immunity in brain tumors can boost the development of new forms of immunotherapy.
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Affiliation(s)
- Elia Guadagno
- Department of Advanced Biomedical Sciences-Pathology Section, University of Naples "Federico II"-via Pansini 5, 80131 Naples, Italy.
| | - Ivan Presta
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Domenico Maisano
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Annalidia Donato
- Department of Medical and Surgical Sciences-University of Catanzaro "Magna Graecia"-viale Europa, 88100 Catanzaro, Italy.
| | - Caterina Krizia Pirrone
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Gabriella Cardillo
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Simona Domenica Corrado
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Chiara Mignogna
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Teresa Mancuso
- Department of Medical and Surgical Sciences-University of Catanzaro "Magna Graecia"-viale Europa, 88100 Catanzaro, Italy.
| | - Giuseppe Donato
- Department of Health Sciences, University of Catanzaro "Magna Græcia"-viale Europa, 88100 Catanzaro, Italy.
| | - Marialaura Del Basso De Caro
- Department of Advanced Biomedical Sciences-Pathology Section, University of Naples "Federico II"-via Pansini 5, 80131 Naples, Italy.
| | - Natalia Malara
- Department of Clinical and Experimental Medicine-University of Catanzaro "Magna Graecia"-viale Europa, 88100 Catanzaro, Italy.
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17
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Di Vito A, Santise G, Mignogna C, Chiefari E, Cardillo G, Presta I, Arturi F, Malara N, Brunetti F, Donato A, Maisano D, Leonetti S, Maselli D, Barni T, Donato G. Innate immunity in cardiac myxomas and its pathological and clinical correlations. Innate Immun 2017; 24:47-53. [PMID: 29145790 PMCID: PMC6830761 DOI: 10.1177/1753425917741678] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Cardiac myxomas are the most common benign cardiac tumor. We investigated the
immunohistochemical properties of 11 surgically excised cardiac myxomas, in
order to analyze the correlation between macrophages and mast cell populations
and clinical parameters. CD68+/CD163−/iNOS−
(M0) cells represent the most abundant macrophage phenotype; however,
CD68+/CD163+ cells (M2) were also frequent.
CD68+/iNOS+ (M1) elements were rare. Mast cells,
defined as a population of c-kit (CD117)+ and/or tryptase+
cells were also detected. Statistical analysis showed significant correlations
between c-kit (CD117)+ and tryptase, CD68 and erythrocyte
sedimentation rate (ESR), ESR and red blood cell count (RBC), and prothrombin
time and platelet count. The inverse correlation between RBCs in peripheral
blood and ESR suggested that anemia associated with chronic inflammatory disease
is a noncasual event in patients suffering from cardiac myxoma. Mechanical
hemolysis may be only a minor component of anemia, according to the lack of
correlation between echographic surface and RBCs. Moreover, tumor size did not
correlate with ESR, showing that inflammatory state may depend from both tumor
cells population and inflammatory infiltrate. In the future, modulation of
macrophage polarization in cardiac myxomas might represent important therapeutic
target.
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Affiliation(s)
- Anna Di Vito
- 1 Department of Experimental and Clinical Medicine, 9325 Magna Græcia University , Catanzaro, Italy
| | - Gianluca Santise
- 2 Cardiothoracic Surgery Unit, Sant'Anna Hospital, Catanzaro, Italy
| | - Chiara Mignogna
- 3 Department of Health Science, 9325 Magna Græcia University , Catanzaro, Italy
| | - Eusebio Chiefari
- 3 Department of Health Science, 9325 Magna Græcia University , Catanzaro, Italy
| | - Gabriella Cardillo
- 3 Department of Health Science, 9325 Magna Græcia University , Catanzaro, Italy
| | - Ivan Presta
- 3 Department of Health Science, 9325 Magna Græcia University , Catanzaro, Italy
| | - Franco Arturi
- 4 Department of Medical and Surgical Sciences, 9325 Magna Græcia University , Catanzaro, Italy
| | - Natalia Malara
- 1 Department of Experimental and Clinical Medicine, 9325 Magna Græcia University , Catanzaro, Italy
| | | | - Annalidia Donato
- 4 Department of Medical and Surgical Sciences, 9325 Magna Græcia University , Catanzaro, Italy
| | - Domenico Maisano
- 6 Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy
| | | | - Daniele Maselli
- 2 Cardiothoracic Surgery Unit, Sant'Anna Hospital, Catanzaro, Italy
| | - Tullio Barni
- 1 Department of Experimental and Clinical Medicine, 9325 Magna Græcia University , Catanzaro, Italy
| | - Giuseppe Donato
- 3 Department of Health Science, 9325 Magna Græcia University , Catanzaro, Italy
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18
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Séhédic D, Chourpa I, Tétaud C, Griveau A, Loussouarn C, Avril S, Legendre C, Lepareur N, Wion D, Hindré F, Davodeau F, Garcion E. Locoregional Confinement and Major Clinical Benefit of 188Re-Loaded CXCR4-Targeted Nanocarriers in an Orthotopic Human to Mouse Model of Glioblastoma. Am J Cancer Res 2017; 7:4517-4536. [PMID: 29158842 PMCID: PMC5695146 DOI: 10.7150/thno.19403] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 09/11/2017] [Indexed: 02/02/2023] Open
Abstract
PURPOSE Gold standard beam radiation for glioblastoma (GBM) treatment is challenged by resistance phenomena occurring in cellular populations well prepared to survive or to repair damage caused by radiation. Among signals that have been linked with radio-resistance, the SDF1/CXCR4 axis, associated with cancer stem-like cell, may be an opportune target. To avoid the problem of systemic toxicity and blood-brain barrier crossing, the relevance and efficacy of an original system of local brain internal radiation therapy combining a radiopharmaceutical with an immuno-nanoparticle was investigated. EXPERIMENT DESIGN The nanocarrier combined lipophilic thiobenzoate complexes of rhenium-188 loaded in the core of a lipid nanocapsule (LNC188Re) with a function-blocking antibody, 12G5 directed at the CXCR4, on its surface. The efficiency of 12G5-LNC188Re was investigated in an orthotopic and xenogenic GBM model of CXCR4-positive U87MG cells implanted in the striatum of Scid mice. RESULTS We demonstrated that 12G5-LNC188Re single infusion treatment by convection-enhanced delivery resulted in a major clinical improvement in median survival that was accompanied by locoregional effects on tumor development including hypovascularization and stimulation of the recruitment of bone marrow derived CD11b- or CD68-positive cells as confirmed by immunohistochemistry analysis. Interestingly, thorough analysis by spectral imaging in a chimeric U87MG GBM model containing CXCR4-positive/red fluorescent protein (RFP)-positive- and CXCR4-negative/RFP-negative-GBM cells revealed greater confinement of DiD-labeled 12G5-LNCs than control IgG2a-LNCs in RFP compartments. Main conclusion: These findings on locoregional impact and targeting of disseminated cancer cells in tumor margins suggest that intracerebral active targeting of nanocarriers loaded with radiopharmaceuticals may have considerable benefits in clinical applications.
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19
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Sørensen MD, Dahlrot RH, Boldt HB, Hansen S, Kristensen BW. Tumour-associated microglia/macrophages predict poor prognosis in high-grade gliomas and correlate with an aggressive tumour subtype. Neuropathol Appl Neurobiol 2017; 44:185-206. [PMID: 28767130 DOI: 10.1111/nan.12428] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 07/27/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023]
Abstract
AIMS Glioblastomas are highly aggressive and treatment resistant. Increasing evidence suggests that tumour-associated macrophages/microglia (TAMs) facilitate tumour progression by acquiring a M2-like phenotype. Our objective was to investigate the prognostic value of TAMs in gliomas using automated quantitative double immunofluorescence. METHODS Samples from 240 patients with primary glioma were stained with antibodies against ionized calcium-binding adaptor molecule-1 (IBA-1) and cluster of differentiation 204 (CD204) to detect TAMs and M2-like TAMs. The expression levels were quantified by software-based classifiers. The associations between TAMs, gemistocytic cells and glioblastoma subtype were examined with immuno- and haematoxylin-eosin stainings. Three tissue arrays containing glioblastoma specimens were included to study IBA-1/CD204 levels in central tumour and tumour periphery and to characterize CD204+ cells. RESULTS Our data revealed that the amount of especially CD204+ TAMs increases with malignancy grade. In grade III-IV, high CD204 expression was associated with shorter survival, while high IBA-1 intensity correlated with a longer survival. In grade IV, CD204 showed independent prognostic value when adjusting for clinical data and the methylation status of O6-methylguanine-DNA methyltransferase. Our findings were confirmed in two bioinformatics databases. TAMs were more abundant in central tumour tissue, mesenchymal glioblastomas and gliomas with many gemistocytic cells. CD204+ TAMs co-expressed proteins related to tumour aggressiveness including matrix metallopeptidase-14 and hypoxia-inducible factor-1α. CONCLUSIONS This is the first study to use automated quantitative immunofluorescence to determine the prognostic impact of TAMs. Our results suggest that M2-like TAMs hold an unfavourable prognostic value in high-grade gliomas and may contribute to a pro-tumourigenic microenvironment.
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Affiliation(s)
- M D Sørensen
- Department of Pathology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - R H Dahlrot
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - H B Boldt
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - S Hansen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark.,Department of Oncology, Odense University Hospital, Odense, Denmark
| | - B W Kristensen
- Department of Pathology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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20
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Poon CC, Sarkar S, Yong VW, Kelly JJP. Glioblastoma-associated microglia and macrophages: targets for therapies to improve prognosis. Brain 2017; 140:1548-1560. [PMID: 28334886 DOI: 10.1093/brain/aww355] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/20/2016] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma is the most common and most malignant primary adult human brain tumour. Diagnosis of glioblastoma carries a dismal prognosis. Treatment resistance and tumour recurrence are the result of both cancer cell proliferation and their interaction with the tumour microenvironment. A large proportion of the tumour microenvironment consists of an inflammatory infiltrate predominated by microglia and macrophages, which are thought to be subverted by glioblastoma cells for tumour growth. Thus, glioblastoma-associated microglia and macrophages are logical therapeutic targets. Their emerging roles in glioblastoma progression are reflected in the burgeoning research into therapeutics directed at their modification or elimination. Here, we review the biology of glioblastoma-associated microglia and macrophages, and model systems used to study these cells in vitro and in vivo. We discuss translation of results using these model systems and review recent advances in immunotherapies targeting microglia and macrophages in glioblastoma. Significant challenges remain but medications that affect glioblastoma-associated microglia and macrophages hold considerable promise to improve the prognosis for patients with this disease.
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Affiliation(s)
- Candice C Poon
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Susobhan Sarkar
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - V Wee Yong
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - John J P Kelly
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
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21
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Gravina GL, Mancini A, Colapietro A, Vitale F, Vetuschi A, Pompili S, Rossi G, Marampon F, Richardson PJ, Patient L, Patient L, Burbidge S, Festuccia C. The novel CXCR4 antagonist, PRX177561, reduces tumor cell proliferation and accelerates cancer stem cell differentiation in glioblastoma preclinical models. Tumour Biol 2017. [PMID: 28639900 DOI: 10.1177/1010428317695528] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Glioblastoma is the most frequent and the most lethal primary brain tumor among adults. Standard of care is the association of radiotherapy with concomitant or adjuvant temozolomide. However, to date, recurrence is inevitable. The CXCL12/CXCR4 pathway is upregulated in the glioblastoma tumor microenvironment regulating tumor cell proliferation, local invasion, angiogenesis, and the efficacy of radio-chemotherapy. In this study, we evaluated the effects of the novel CXCR4 antagonist, PRX177561, in preclinical models of glioblastoma. CXCR4 expression and PRX177561 effects were assessed on a panel of 12 human glioblastoma cells lines and 5 patient-derived glioblastoma stem cell cultures. Next, the effect of PRX177561 was tested in vivo, using subcutaneous injection of U87MG, U251, and T98G cells as well as orthotopic intrabrain inoculation of luciferase-transfected U87MG cells. Here we found that PRX177561 impairs the proliferation of human glioblastoma cell lines, increases apoptosis, and reduces CXCR4 expression and cell migration in response to stromal cell-derived factor 1alpha in vitro. PRX177561 reduced the expression of stem cell markers and increased that of E-cadherin and glial fibrillary acidic protein in U87MG cells consistent with a reduction in cancer stem cells. In vivo, PRX177561 reduced the weight and increased the time to progression of glioblastoma subcutaneous tumors while increasing disease-free survival and overall survival of mice bearing orthotopic tumors. Our findings suggest that targeting stromal cell-derived factor 1 alpha/CXCR4 axis by PRX177561 might represent a novel therapeutic approach against glioblastoma and support further investigation of this compound in more complex preclinical settings in order to determine its therapeutic potential.
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Affiliation(s)
- Giovanni Luca Gravina
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy.,2 Department of Biotechnological and Applied Clinical Sciences, Division of Radiotherapy, University of L'Aquila, L'Aquila, Italy
| | - Andrea Mancini
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Alessandro Colapietro
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Flora Vitale
- 3 Department of Biotechnological and Applied Clinical Sciences, Neurobiology Laboratory, University of L'Aquila, L'Aquila, Italy
| | - Antonella Vetuschi
- 4 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Human Anatomy, University of L'Aquila, L'Aquila, Italy
| | - Simona Pompili
- 4 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Human Anatomy, University of L'Aquila, L'Aquila, Italy
| | - Giulia Rossi
- 5 Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Francesco Marampon
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | | | - Lee Patient
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | - Lee Patient
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
| | | | - Claudio Festuccia
- 1 Department of Biotechnological and Applied Clinical Sciences, Laboratory of Radiobiology, University of L'Aquila, L'Aquila, Italy
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22
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Crielaard BJ, Lammers T, Rivella S. Targeting iron metabolism in drug discovery and delivery. Nat Rev Drug Discov 2017; 16:400-423. [PMID: 28154410 PMCID: PMC5455971 DOI: 10.1038/nrd.2016.248] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Iron fulfils a central role in many essential biochemical processes in human physiology; thus, proper processing of iron is crucial. Although iron metabolism is subject to relatively strict physiological control, numerous disorders, such as cancer and neurodegenerative diseases, have recently been linked to deregulated iron homeostasis. Consequently, iron metabolism constitutes a promising and largely unexploited therapeutic target for the development of new pharmacological treatments for these diseases. Several iron metabolism-targeted therapies are already under clinical evaluation for haematological disorders, and these and newly developed therapeutic agents are likely to have substantial benefit in the clinical management of iron metabolism-associated diseases, for which few efficacious treatments are currently available.
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Affiliation(s)
- Bart J. Crielaard
- Department of Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Groningen, The Netherlands
- W.J. Kolff Institute for Biomedical Engineering and Materials Science, University Medical Center Groningen, Groningen, The Netherlands
| | - Twan Lammers
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, University Clinic and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
- Department of Targeted Therapeutics, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Stefano Rivella
- Children’s Hospital of Philadelphia, Abramson Research Center, Philadelphia, PA, United States of America
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23
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McConnell HL, Kersch CN, Woltjer RL, Neuwelt EA. The Translational Significance of the Neurovascular Unit. J Biol Chem 2016; 292:762-770. [PMID: 27920202 DOI: 10.1074/jbc.r116.760215] [Citation(s) in RCA: 183] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The mammalian brain is supplied with blood by specialized vasculature that is structurally and functionally distinct from that of the periphery. A defining feature of this vasculature is a physical blood-brain barrier (BBB). The BBB separates blood components from the brain microenvironment, regulating the entry and exit of ions, nutrients, macromolecules, and energy metabolites. Over the last two decades, physiological studies of cerebral blood flow dynamics have demonstrated that substantial intercellular communication occurs between cells of the vasculature and the neurons and glia that abut the vasculature. These findings suggest that the BBB does not function independently, but as a module within the greater context of a multicellular neurovascular unit (NVU) that includes neurons, astrocytes, pericytes, and microglia as well as the blood vessels themselves. Here, we describe the roles of these NVU components as well as how they act in concert to modify cerebrovascular function and permeability in health and in select diseases.
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Affiliation(s)
- Heather L McConnell
- From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941
| | - Cymon N Kersch
- From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941
| | - Randall L Woltjer
- From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941
| | - Edward A Neuwelt
- From the Departments of Neurology, Pathology, Neurosurgery, and Veterans Affairs, Oregon Health & Science University, Portland, Oregon 97239-2941
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24
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Sasaki A. Microglia and brain macrophages: An update. Neuropathology 2016; 37:452-464. [DOI: 10.1111/neup.12354] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Atsushi Sasaki
- Department of Pathology; Saitama Medical University; Saitama Japan
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