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Tumor Cell Infiltration into the Brain in Glioblastoma: From Mechanisms to Clinical Perspectives. Cancers (Basel) 2022; 14:cancers14020443. [PMID: 35053605 PMCID: PMC8773542 DOI: 10.3390/cancers14020443] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 01/04/2022] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma is the most common and malignant primary brain tumor, defined by its highly aggressive nature. Despite the advances in diagnostic and surgical techniques, and the development of novel therapies in the last decade, the prognosis for glioblastoma is still extremely poor. One major factor for the failure of existing therapeutic approaches is the highly invasive nature of glioblastomas. The extreme infiltrating capacity of tumor cells into the brain parenchyma makes complete surgical removal difficult; glioblastomas almost inevitably recur in a more therapy-resistant state, sometimes at distant sites in the brain. Therefore, there are major efforts to understand the molecular mechanisms underpinning glioblastoma invasion; however, there is no approved therapy directed against the invasive phenotype as of now. Here, we review the major molecular mechanisms of glioblastoma cell invasion, including the routes followed by glioblastoma cells, the interaction of tumor cells within the brain environment and the extracellular matrix components, and the roles of tumor cell adhesion and extracellular matrix remodeling. We also include a perspective of high-throughput approaches utilized to discover novel players for invasion and clinical targeting of invasive glioblastoma cells.
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2
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Bezdekova R, Jelinek T, Kralova R, Stork M, Polackova P, Vsianska P, Brozova L, Jarkovsky J, Almasi M, Boichuk I, Knechtova Z, Penka M, Pour L, Sevcikova S, Hajek R, Rihova L. Necessity of flow cytometry assessment of circulating plasma cells and its connection with clinical characteristics of primary and secondary plasma cell leukaemia. Br J Haematol 2021; 195:95-107. [PMID: 34500493 PMCID: PMC9292932 DOI: 10.1111/bjh.17713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/30/2021] [Indexed: 01/23/2023]
Abstract
Plasma cell leukaemia (PCL) is a rare and very aggressive plasma cell disorder. Preventing a dismal outcome of PCL requires early diagnosis with appropriate analytical tools. Therefore, the investigation of 33 patients with primary and secondary PCL was done when the quantity of circulating plasma cells (PCs) using flow cytometry (FC) and morphology assessment was evaluated. The phenotypic profile of the PCs was also analysed to determine if there is an association with clinical outcomes and to evaluate the prognostic value of analysed markers. Our results revealed that FC is an excellent method for identifying circulating PCs as a significantly higher number was identified by FC than by morphology (26·7% vs. 13·5%, P = 0·02). None of secondary PCL cases expressed CD19 or CD20. A low level of expression with similar positivity of CD27, CD28, CD81 and CD117 was found in both PCL groups. A decrease of CD44 expression was detected only in secondary PCL. Expression of CD56 was present in more than half of PCL cases as well as cytoplasmic nestin. A decreased level of platelets, Eastern Cooperative Oncology Group score of 2-3 and lack of CD20+ PC were associated with a higher risk of death. FC could be incorporated in PCL diagnostics not only to determine the number of circulating PCs, but also to assess their phenotype profile and this information should be useful in patients' diagnosis and possible prognosis.
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Affiliation(s)
- Renata Bezdekova
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Tomas Jelinek
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Romana Kralova
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Martin Stork
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Petra Polackova
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic
| | - Pavla Vsianska
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lucie Brozova
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Martina Almasi
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ivanna Boichuk
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Zdenka Knechtova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Miroslav Penka
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic
| | - Ludek Pour
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Sabina Sevcikova
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Roman Hajek
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Lucie Rihova
- Department of Clinical Hematology, University Hospital Brno, Brno, Czech Republic.,Babak Myeloma Group, Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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3
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Rusciano I, Marvi MV, Owusu Obeng E, Mongiorgi S, Ramazzotti G, Follo MY, Zoli M, Morandi L, Asioli S, Fabbri VP, McCubrey JA, Suh PG, Manzoli L, Cocco L, Ratti S. Location-dependent role of phospholipase C signaling in the brain: Physiology and pathology. Adv Biol Regul 2020; 79:100771. [PMID: 33303387 DOI: 10.1016/j.jbior.2020.100771] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 11/16/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022]
Abstract
Phosphoinositide-specific phospholipases C (PI-PLCs) are a class of enzymes involved in the phosphatidylinositol metabolism, which is implicated in the activation of several signaling pathways and which controls several cellular processes. The scientific community has long accepted the existence of a nuclear phosphoinositide (PI) metabolism, independent from the cytoplasmic one, critical in nuclear function control. Indeed, nuclear PIs are involved in many activities, such as cell cycle regulation, cell proliferation, cell differentiation, membrane transport, gene expression and cytoskeletal dynamics. There are several types of PIs and enzymes implicated in brain activities and among these enzymes, PI-PLCs contribute to a specific and complex network in the developing nervous system. Moreover, considering the abundant presence of PI-PLCβ1, PI-PLCγ1 and PI-PLCβ4 in the brain, a specific role for each PLC subtype has been suggested in the control of neuronal activity, which is important for synapse function, development and other mechanisms. The focus of this review is to describe the latest research about the involvement of PI-PLC signaling in the nervous system, both physiologically and in pathological conditions. Indeed, PI-PLC signaling imbalance seems to be also linked to several brain disorders including epilepsy, movement and behavior disorders, neurodegenerative diseases and, in addition, some PI-PLC subtypes could become potential novel signature genes for high-grade gliomas.
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Affiliation(s)
- Isabella Rusciano
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Maria Vittoria Marvi
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Eric Owusu Obeng
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Sara Mongiorgi
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Giulia Ramazzotti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Matilde Y Follo
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Matteo Zoli
- Center for the Diagnosis and Treatment of Hypothalamic-Pituitary Diseases - Pituitary Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna (Institute of Neurological Sciences of Bologna), Bologna, Italy; Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Italy
| | - Luca Morandi
- Functional MR Unit, Bellaria Hospital, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40139, Bologna, Italy
| | - Sofia Asioli
- Dipartimento di Scienze Biomediche e Neuromotorie, U.O.C. Anatomia Patologica, AUSL, Università di Bologna, Bologna, Italy; IRCCS Istituto delle Scienze Neurologiche di Bologna, Programma Neurochirurgia Ipofisi, Bologna, Italy
| | - Viscardo Paolo Fabbri
- Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Italy
| | - James A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC, USA
| | - Pann-Ghill Suh
- Korea Brain Research Institute, Daegu, Republic of Korea; School of Life Sciences, UNIST, Ulsan, Republic of Korea
| | - Lucia Manzoli
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Lucio Cocco
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Stefano Ratti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
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Suska A, Vesole DH, Castillo JJ, Kumar SK, Parameswaran H, Mateos MV, Facon T, Gozzetti A, Mikala G, Szostek M, Mikhael J, Hajek R, Terpos E, Jurczyszyn A. Plasma Cell Leukemia - Facts and Controversies: More Questions than Answers? Clin Hematol Int 2020; 2:133-142. [PMID: 34595454 PMCID: PMC8432408 DOI: 10.2991/chi.k.200706.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/01/2020] [Indexed: 11/18/2022] Open
Abstract
Plasma cell leukemia (PCL) is an aggressive hematological malignancy characterized by an uncontrolled clonal proliferation of plasma cells (PCs) in the bone marrow and peripheral blood. PCL has been defined by an absolute number of circulating PCs exceeding 2.0 × 109/L and/or >20% PCs in the total leucocyte count. It is classified as primary PCL, which develops de novo, and secondary PCL, occurring at the late and advanced stages of multiple myeloma (MM). Primary and secondary PCL are clinically and biologically two distinct entities. After the diagnosis, treatment should be immediate and should include a proteasome inhibitor and immunomodulator-based combination regimens as induction, followed by stem cell transplantation (SCT) in transplant-eligible individuals who have cleared the peripheral blood of circulating PCs. Due to the rarity of the condition, there have been very few clinical trials. Furthermore, virtually all of the myeloma trials exclude patients with active PCL. The evaluation of response has been defined by the International Myeloma Working Group and consists of both acute leukemia and MM criteria. With conventional chemotherapy, the prognosis of primary PCL has been ominous, with reported overall survival (OS) ranging from 6.8 to 12.6 months. The use of novel agents and autologous SCT appears to be associated with deeper response and an improved survival, although it still remains low. The PCL prognostic index provides a simple score to risk-stratify PCL. The prognosis of secondary PCL is extremely poor, with OS of only 1 month.
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Affiliation(s)
- Anna Suska
- Department of Hematology, Jagiellonian University Medical College, Kopernika 17, Krakow 31-501, Poland
| | - David H Vesole
- The John Theurer Cancer Center at Hackensack UMC, Hackensack, NJ, USA
| | - Jorge J Castillo
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Shaji K Kumar
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | | | - Maria V Mateos
- Complejo Asistencial Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (CAUSA/IBSAL), Salamanca, Spain
| | - Thierry Facon
- Service des Maladies du Sang, Hôpital Claude Huriez, Lille, France
| | | | - Gabor Mikala
- Department of Hematology and Stem Cell Transplantation, South-Pest Central Hospital, Natl. Inst. Hematol. Infectol, Budapest, Hungary
| | - Marta Szostek
- Department of Hematology, Jagiellonian University Medical College, Kopernika 17, Krakow 31-501, Poland
| | - Joseph Mikhael
- Translational Genomics Research Institute, City of Hope Cancer Center, Phoenix, Arizona, USA
| | - Roman Hajek
- University Hospital Ostrava and Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Evangelos Terpos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Artur Jurczyszyn
- Department of Hematology, Jagiellonian University Medical College, Kopernika 17, Krakow 31-501, Poland
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Adhesion molecules and the extracellular matrix as drug targets for glioma. Brain Tumor Pathol 2016; 33:97-106. [PMID: 26992378 DOI: 10.1007/s10014-016-0261-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 03/07/2016] [Indexed: 12/14/2022]
Abstract
The formation of tumor vasculature and cell invasion along white matter tracts have pivotal roles in the development and progression of glioma. A better understanding of the mechanisms of angiogenesis and invasion in glioma will aid the development of novel therapeutic strategies. The processes of angiogenesis and invasion cause the production of an array of adhesion molecules and extracellular matrix (ECM) components. This review focuses on the role of adhesion molecules and the ECM in malignant glioma. The results of clinical trials using drugs targeted against adhesion molecules and the ECM for glioma are also discussed.
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Abstract
Gliomas are the most frequent type of primary brain tumor in adults. Their highly proliferative nature, complex cellular composition, and ability to escape therapies have confronted investigators for years, hindering the advancement toward an effective treatment. Agents that are safe and can be administered as dietary supplements have always remained priority to be most feasible for cancer therapy. Withania somnifera (ashwagandha) is an essential ingredient of Ayurvedic preparations and is known to eliminate cancer cells derived from a variety of peripheral tissues. Although our previous studies have addressed the in vitro anti-proliferative and differentiation-inducing properties of ashwagandha on neuronal cell lines, in vivo studies validating the same are lacking. While exploring the mechanism of its action in vitro, we observed that the ashwagandha water extract (ASH-WEX) induced the G2/M phase blockade and caused the activation of multiple pro-apoptotic pathways, leading to suppression of cyclin D1, bcl-xl, and p-Akt, and reduced the expression of polysialylated form of neural cell adhesion molecule (PSA-NCAM) as well as the activity of matrix metalloproteinases. ASH-WEX reduced the intracranial tumor volumes in vivo and suppressed the tumor-promoting proteins p-nuclear factor kappa B (NF-κB), p-Akt, vascular endothelial growth factor (VEGF), heat shock protein 70 (HSP70), PSA-NCAM, and cyclin D1 in the rat model of orthotopic glioma allograft. Reduction in glial fibrillary acidic protein (GFAP) and upregulation of mortalin and neural cell adhesion molecule (NCAM) expression specifically in tumor-bearing tissue further indicated the anti-glioma efficacy of ASH-WEX in vivo. Combining this enhanced understanding of the molecular mechanisms of ASH-WEX in glioma with in vivo model system offers new opportunities to develop therapeutic strategy for safe, specific, and effective formulations for treating brain tumors.
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8
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Lo Vasco VR. Phosphoinositide pathway and the signal transduction network in neural development. Neurosci Bull 2012; 28:789-800. [PMID: 23152330 DOI: 10.1007/s12264-012-1283-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 05/07/2012] [Indexed: 12/21/2022] Open
Abstract
The development of the nervous system is under the strict control of a number of signal transduction pathways, often interconnected. Among them, the phosphoinositide (PI) pathway and the related phospholipase C (PI-PLC) family of enzymes have been attracting much attention. Besides their well-known role in the regulation of intracellular calcium levels, PI-PLC enzymes interact with a number of molecules belonging to further signal transduction pathways, contributing to a specific and complex network in the developing nervous system. In this review, the connections of PI signalling with further transduction pathways acting during neural development are discussed, with special regard to the role of the PI-PLC family of enzymes.
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Affiliation(s)
- Vincenza Rita Lo Vasco
- Department Organi di Senso, Policlinico Umberto I, Faculty of Medicine, Sapienza University of Rome, viale del Policlinico 33, Rome 00185, Italy.
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9
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Abstract
Primary plasma cell leukemia (pPCL) is a rare and aggressive plasma cell proliferative disorder with a very poor prognosis and with distinct biologic, clinical, and laboratory features. Compared with multiple myeloma, pPCL presents more often with extramedullary involvement, anemia, thrombocytopenia, hypercalcemia, elevated serum β(2)-microglobulin and lactate dehydrogenase levels, as well as impaired renal function. Many of the genetic aberrations observed in newly diagnosed pPCL are typically found in advanced multiple myeloma. These cytogenetic abnormalities and mutations lead to increased proliferation, enhanced inhibition of apoptosis, escape from immune surveillance, and independence from the BM microenvironment, with changes in expression of adhesion molecules or chemokine receptors. The outcome of pPCL has improved with the introduction of autologous stem cell transplantation and combination approaches with novel agents, including bortezomib and immunomodulatory drugs, such as lenalidomide. In this review, we provide an overview of currently available therapeutic options with recommendations of how these treatment modalities can best be used to improve outcome for plasma cell leukemia patients.
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Håkansson J, Ståhlberg A, Wolfhagen Sand F, Gerhardt H, Semb H. N-CAM exhibits a regulatory function in pathological angiogenesis in oxygen induced retinopathy. PLoS One 2011; 6:e26026. [PMID: 22043302 PMCID: PMC3197149 DOI: 10.1371/journal.pone.0026026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 09/15/2011] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Diabetic retinopathy and retinopathy of prematurity are diseases caused by pathological angiogenesis in the retina as a consequence of local hypoxia. The underlying mechanism for epiretinal neovascularization (tuft formation), which contributes to blindness, has yet to be identified. Neural cell adhesion molecule (N-CAM) is expressed by Müller cells and astrocytes, which are in close contact with the retinal vasculature, during normal developmental angiogenesis. METHODOLOGY/PRINCIPAL FINDINGS Notably, during oxygen induced retinopathy (OIR) N-CAM accumulated on astrocytes surrounding the epiretinal tufts. Here, we show that N-CAM ablation results in reduced vascular tuft formation due to reduced endothelial cell proliferation despite an elevation in VEGFA mRNA expression, whereas retinal developmental angiogenesis was unaffected. CONCLUSION/SIGNIFICANCE We conclude that N-CAM exhibits a regulatory function in pathological angiogenesis in OIR. This is a novel finding that can be of clinical relevance in diseases associated with proliferative vasculopathy.
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Affiliation(s)
- Joakim Håkansson
- Department of Medical Biochemistry, Sahlgrenska Academy at Gothenburg University, Göteborg, Sweden
| | - Anders Ståhlberg
- Department of Pathology, Sahlgrenska Cancer Center, The Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden
- TATAA Biocenter, Göteborg, Sweden
| | - Fredrik Wolfhagen Sand
- Department of Medical Biochemistry, Sahlgrenska Academy at Gothenburg University, Göteborg, Sweden
- Stem Cell and Pancreas Developmental Biology, Department of Laboratory Medicine, Stem Cell Center, Lund University, Lund, Sweden
| | - Holger Gerhardt
- Department of Medical Biochemistry, Sahlgrenska Academy at Gothenburg University, Göteborg, Sweden
- Vascular Biology Laboratory, London Research Institute-Cancer Research UK, London, United Kingdom
| | - Henrik Semb
- Department of Medical Biochemistry, Sahlgrenska Academy at Gothenburg University, Göteborg, Sweden
- Stem Cell and Pancreas Developmental Biology, Department of Laboratory Medicine, Stem Cell Center, Lund University, Lund, Sweden
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Gueye Y, Ferhat L, Sbai O, Bianco J, Ould-Yahoui A, Bernard A, Charrat E, Chauvin JP, Risso JJ, Féron F, Rivera S, Khrestchatisky M. Trafficking and secretion of matrix metalloproteinase-2 in olfactory ensheathing glial cells: A role in cell migration? Glia 2011; 59:750-70. [DOI: 10.1002/glia.21146] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 12/20/2010] [Indexed: 02/06/2023]
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12
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Duenisch P, Reichart R, Mueller U, Brodhun M, Bjerkvig R, Romeike B, Walter J, Herbold C, Regenbrecht CRA, Kalff R, Kuhn SA. Neural cell adhesion molecule isoform 140 declines with rise of WHO grade in human gliomas and serves as indicator for the invasion zone of multiform glioblastomas and brain metastases. J Cancer Res Clin Oncol 2010; 137:399-414. [PMID: 20440511 DOI: 10.1007/s00432-010-0888-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Accepted: 04/06/2010] [Indexed: 01/07/2023]
Abstract
PURPOSE Gliomas are highly invasive neuroepithelial tumors with a propensity of malignant transformation and very restricted treatment options. The neural cell adhesion molecule (NCAM) modulates cellular migration, proliferation, and synaptic plasticity by homophilic and heterophilic interactions. Hereby, we investigated its relevance as a glioma tissue marker for the biological aggressiveness of these tumors and compared these features with the carcinoma brain metastasis invasion zone. MATERIALS AND METHODS We analyzed 194 human brain samples. Human tumor-free brain specimens served as control for the white and gray matter. In addition to that, we used human glioblastomas from nude rats. All tissues were investigated immunohistochemically for the expression of the NCAM isoform 140. Additionally, the multiplanar MRI-CT fusion neuronavigation-guided serial stereotactic biopsy was performed and completed by histopathological workup. RESULTS Human gliomas loose NCAM-140 with the rise of their WHO grade. Meningiomas are NCAM-140 negative. As the most striking feature, human brain metastases and the majority of human glioblastomas of our patients and of nude rats were totally NCAM-140 negative. This NCAM negativity led us to the conclusion of three different main glioblastoma invasion patterns. Surprisingly, the majority of brain metastasis samples that contained surrounding brain parenchyma demonstrated invasive tumor cell nests beyond the sharply demarcated metastasis border. We also found invasive metastatic cell nests outside the contrast enhancing tumor zone by means of the MRI-CT fusion neuronavigation-guided serial stereotactic biopsy. CONCLUSION The expression of NCAM-140 inversely correlates with the WHO grade of human gliomas. The lost expression of NCAM-140 in human glioblastomas and in brain metastases enables the investigation of the brain-tumor interface and the definition of glioblastoma invasion patterns and shows that brain metastases are more invasive than ever thought.
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Affiliation(s)
- Pedro Duenisch
- Department of Neurosurgery, Medical Center, Friedrich-Schiller-University, Erlanger Allee 101, 07747, Jena, Germany
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Raja KRM, Kovarova L, Hajek R. Review of phenotypic markers used in flow cytometric analysis of MGUS and MM, and applicability of flow cytometry in other plasma cell disorders. Br J Haematol 2010; 149:334-51. [DOI: 10.1111/j.1365-2141.2010.08121.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Kraj M, Sokołowska U, Kopeć-Szlęzak J, Pogłód R, Kruk B, Woźniak J, Szpila T. Clinicopathological correlates of plasma cell CD56 (NCAM) expression in multiple myeloma. Leuk Lymphoma 2009; 49:298-305. [DOI: 10.1080/10428190701760532] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Haupt LM, Irving RE, Weinstein SR, Irving MG, Griffiths LR. Matrix metalloproteinase localisation by in situ-RT-PCR in archival human breast biopsy material. Mol Cell Probes 2007; 22:83-9. [PMID: 17669621 DOI: 10.1016/j.mcp.2007.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Accepted: 06/19/2007] [Indexed: 11/27/2022]
Abstract
Utilising archival human breast cancer biopsy material we examined the stromal/epithelial interactions of several matrix metalloproteinases (MMPs) using in situ-RT-PCR (IS-RT-PCR). In breast cancer, the stromal/epithelial interactions that occur, and the site of production of these proteases, are central to understanding their role in invasive and metastatic processes. We examined MT1-MMP (MMP-14, membrane type-1-MMP), MMP-1 (interstitial collagenase) and MMP-3 (stromelysin-1) for their localisation profile in progressive breast cancer biopsy material (poorly differentiated invasive breast carcinoma (PDIBC), invasive breast carcinomas (IBC) and lymph node metastases (LNM)). Expression of MT1-MMP, MMP-1 and MMP-3 was observed in both the tumour epithelial and surrounding stromal cells in most tissue sections examined. MT1-MMP expression was predominantly localised to the tumour component in the pre-invasive lesions. MMP-1 gene expression was relatively well distributed between both tissue compartments, while MMP-3 demonstrated highest expression levels in the stromal tissue surrounding the epithelial tumour cells. The results demonstrate the ability to distinguish compartmental gene expression profiles using IS-RT-PCR. Further, we suggest a role for MT1-MMP in early tumour progression, expression of MMP-1 during metastasis and focal expression pattern of MMP-3 in areas of expansion. These expression profiles may provide markers for early breast cancer diagnoses and present potential therapeutic targets.
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Affiliation(s)
- Larisa M Haupt
- Genomics Research Centre, School of Medical Science, Griffith University Gold Coast, PMB 50 Gold Coast Mail Centre, Qld. 9726, Australia.
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Blaheta RA, Daher FH, Michaelis M, Hasenberg C, Weich EM, Jonas D, Kotchetkov R, Doerr HW, Cinatl J. Chemoresistance induces enhanced adhesion and transendothelial penetration of neuroblastoma cells by down-regulating NCAM surface expression. BMC Cancer 2006; 6:294. [PMID: 17181871 PMCID: PMC1780063 DOI: 10.1186/1471-2407-6-294] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Accepted: 12/21/2006] [Indexed: 01/07/2023] Open
Abstract
Background Drug resistance to chemotherapy is often associated with increased malignancy in neuroblastoma (NB). One explanation for the link between resistance and malignancy might be that resistance facilitates cancer progression and invasion. To investigate this hypothesis, adhesion, transendothelial penetration and NCAM (CD56) adhesion receptor expression of drug-resistant versus drug-sensitive NB tumor cells were evaluated. Methods Acquired drug resistance was mimicked by exposing parental UKF-NB-2, UKF-NB-3 or IMR-32 tumor cells to increasing concentrations of vincristine- (VCR) or doxorubicin (DOX) to establish the resistant tumor cell sublines UKF-NB-2VCR, UKF-NB-2DOX, UKF-NB-3VCR, UKF-NB-3DOX, IMR-32VCR and IMR-32DOX. Additionally, the malignant behaviour of UKF-NB-4, which already possessed the intrinsic multidrug resistance (MDR) phenotype, was analyzed. UKF-NB-4 exposed to VCR or DOX were designated UKF-NB-4VCR or UKF-NB-4DOX. Combined phase contrast – reflection interference contrast microscopy was used to separately evaluate NB cell adhesion and penetration. NCAM was analyzed by flow cytometry, western blot and RT-PCR. Results VCR and DOX resistant tumor sublines showed enhanced adhesion and penetration capacity, compared to their drug naïve controls. Strongest effects were seen with UKF-NB-2VCR, UKF-NB-3VCR and IMR-32DOX. DOX or VCR treatment also evoked increased invasive behaviour of UKF-NB-4. The process of accelerated tumor invasion was accompanied by decreased NCAM surface and protein expression, and down-regulation of NCAM coding mRNA. Transfection of UKF-NB-4VCR cells with NCAM cDNA led to a significant receptor up-regulation, paralleled by diminished adhesion to an endothelial cell monolayer. Conclusion It is concluded that NB cells resistant to anticancer drugs acquire increased invasive capacity relative to non-resistant parental cells, and that enhanced invasion is caused by strong down-regulation of NCAM adhesion receptors.
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Affiliation(s)
- Roman A Blaheta
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Frederick H Daher
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Martin Michaelis
- Zentrum der Hygiene, Institut für Medizinische Virologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Christoph Hasenberg
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Eva M Weich
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Dietger Jonas
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Rouslan Kotchetkov
- Zentrum der Hygiene, Institut für Medizinische Virologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Hans Willhelm Doerr
- Zentrum der Hygiene, Institut für Medizinische Virologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
| | - Jindrich Cinatl
- Zentrum der Hygiene, Institut für Medizinische Virologie; Johann Wolfgang Goethe-Universität; Frankfurt am Main, Germany
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17
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Diestel S, Hinkle CL, Schmitz B, Maness PF. NCAM140 stimulates integrin-dependent cell migration by ectodomain shedding. J Neurochem 2005; 95:1777-84. [PMID: 16277615 DOI: 10.1111/j.1471-4159.2005.03475.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The neural cell adhesion molecule (NCAM) plays a key role in neural development, regeneration and synaptic plasticity. This study describes a novel function of NCAM140 in stimulating integrin-dependent cell migration. Expression of NCAM140 in rat B35 neuroblastoma cells resulted in increased migration toward the extracellular matrix proteins fibronectin, collagen IV, vitronectin, and laminin. NCAM-potentiated cell migration toward fibronectin was dependent on beta1 integrins and required extracellular-regulated kinase (ERK)1/2 mitogen-activated protein kinase (MAPK) activity. NCAM140 in B35 neuroblastoma cells was subject to ectodomain cleavage resulting in a 115 kDa soluble fragment released into the media and a 30 kDa cytoplasmic domain fragment remaining in the cell membrane. NCAM140 ectodomain cleavage was stimulated by the tyrosine phosphatase inhibitor pervanadate and inhibited by the broad spectrum metalloprotease inhibitor GM6001, characteristic of a metalloprotease. Moreover, treatment of NCAM140-B35 cells with GM6001 reduced NCAM140-stimulated cell migration toward fibronectin and increased cellular attachment to fibronectin to a small but significant extent. These results suggested that metalloprotease-induced cleavage of NCAM140 from the membrane promotes integrin- and ERK1/2-dependent cell migration to extracellular matrix proteins.
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Affiliation(s)
- Simone Diestel
- Department of Biochemistry, Institute of Physiology, Biochemistry and Animal Health, University of Bonn, Bonn, Germany
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18
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Blaheta RA, Beecken WD, Engl T, Jonas D, Oppermann E, Hundemer M, Doerr HW, Scholz M, Cinatl J. Human cytomegalovirus infection of tumor cells downregulates NCAM (CD56): a novel mechanism for virus-induced tumor invasiveness. Neoplasia 2005; 6:323-31. [PMID: 15256054 PMCID: PMC1502118 DOI: 10.1593/neo.03418] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Pathologic data indicate that human cytomegalovirus (HCMV) infection might be associated with the pathogenesis of several human malignancies. However, no definitive evidence of a causal link between HCMV infection and cancer dissemination has been established to date. This study describes the modulation of the invasive behavior of NCAM-expressing tumor cell lines by HCMV. Neuroblastoma (NB) cells, persistently infected with the HCMV strain AD169 (UKF-NB-4AD169 and MHH-NB-11AD169), were added to endothelial cell monolayers and adhesion and penetration kinetics were measured. The 140- and 180-kDa isoforms of the adhesion receptor NCAM were evaluated by flow cytometry, Western blot, and reverse transcription-polymerase chain reaction (RT-PCR). The relevance of NCAM for tumor cell binding was proven by treating NB with NCAM antisense oligonucleotides or NCAM transfection. HCMV infection profoundly increased the number of adherent and penetrated NB, compared to controls. Surface expression of NCAM was significantly lower on UKF-NB-4AD169 and MHH-NB-11AD169, compared to mock-infected cells. Western-blot and RT-PCR demonstrated reduced protein and RNA levels of the 140- and 180-kDa isoform. An inverse correlation between NCAM expression and adhesion capacity of NB has been shown by antisense and transfection experiments. We conclude that HCMV infection leads to downregulation of NCAM receptors, which is associated with enhanced tumor cell invasiveness.
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Affiliation(s)
- Roman A. Blaheta
- Zentrum der Hygiene, Institut für Medizinische Virologie, Germany
| | | | - Tobias Engl
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie, Germany
| | - Dietger Jonas
- Zentrum der Chirurgie, Klinik für Urologie und Kinderurologie, Germany
| | - Elsie Oppermann
- Zentrum der Chirurgie, Klinik für Allgemein- und Gefäβchirurgie,Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany
| | - Michael Hundemer
- Zentrum der Hygiene, Institut für Medizinische Virologie, Germany
| | | | - Martin Scholz
- Zentrum der Hygiene, Institut für Medizinische Virologie, Germany
| | - Jindrich Cinatl
- Zentrum der Hygiene, Institut für Medizinische Virologie, Germany
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Huang KC, Altinoz M, Wosik K, Larochelle N, Koty Z, Zhu L, Holland PC, Nalbantoglu J. Impact of the coxsackie and adenovirus receptor (CAR) on glioma cell growth and invasion: Requirement for the C-terminal domain. Int J Cancer 2004; 113:738-45. [PMID: 15499626 DOI: 10.1002/ijc.20623] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Expression of the coxsackie and adenovirus receptor (CAR) is downregulated in malignant glioma cell lines and is barely detectable in high-grade primary astrocytoma (glioblastoma multiforme). We determined the effect of forced CAR expression on the invasion and growth of the human glioma cell line U87-MG, which does not express any CAR. Although retrovirally mediated expression of full-length CAR in U87-MG cells did not affect monolayer growth in vitro, it did reduce glioma cell invasion in a 3-dimensional spheroid model. Furthermore, in xenograft experiments, intracerebral implantation of glioma cells expressing full-length CAR resulted in tumors with a significantly reduced volume compared to tumors generated by control vector-transduced U87-MG cells. In contrast, U87-MG cells expressing transmembrane CAR with a deletion of the entire cytoplasmic domain (except for the first 2 intracellular juxtamembrane cysteine amino acids) had rates of invasion and tumor growth that were similar to those of the control cells. This difference in behavior between the 2 forms of CAR was not due to improper cell surface localization of the cytoplasmically deleted CAR as determined by comparable immunostaining of unpermeabilized cells, equivalent adenoviral transduction of the cells and similar extent of fractionation into lipid-rich domains. Taken together, these results suggest that the decrease or loss of CAR expression in malignant glioma may confer a selective advantage in growth and invasion to these tumors.
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Affiliation(s)
- Kuo-Cheng Huang
- Department of Neurology and Neurosurgery, McGill University and the Montreal Neurological Institute, Montreal, Quebec, Canada
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20
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Blaheta RA, Hundemer M, Mayer G, Vogel JU, Kornhuber B, Cinatl J, Markus BH, Driever PH, Cinatl J. Expression level of neural cell adhesion molecule (NCAM) inversely correlates with the ability of neuroblastoma cells to adhere to endothelium in vitro. CELL COMMUNICATION & ADHESION 2002; 9:131-47. [PMID: 12521134 DOI: 10.1080/15419060214520] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The precise function of cell adhesion molecules in the hematogenous phase of neuroblastoma metastasis is poorly understood. The aim of this study was to investigate whether neural cell adhesion molecule (NCAM) modulates neuroblastoma cell (NB) adhesion and transendothelial penetration in a coculture model. Our data, assessed on 11 NB cell lines, demonstrate an inverse correlation between NCAM expression and NB cell adhesion. Transfection of the NB cell line UKF-NB-4 with a cDNA encoding the human NCAM-140 kD isoform enhanced NCAM expression and the amount of tumor cell aggregates, reduced the amount of single tumor cells, and diminished initial NB cell adhesion to an endothelial cell monolayer. Treatment of UKF-NB-4 with NCAM antisense oligonucleotides reduced NCAM surface level, increased the number of single tumor cells, and induced up-regulation of NB cell adhesion to endothelium. Modulation of NCAM expression had no effect on transendothelial penetration. Fluorescence analysis revealed a down-regulation of NCAM in single tumor cells, prior to NB adhesion. The data support the view that low levels of NCAM are necessary for NB cells to leave a tumor cell aggregate and adhere to endothelial cells.
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Affiliation(s)
- Roman A Blaheta
- Zentrum der Hygiene, Institut für Medizinische Virologie, Klinikum der J. W Goethe-Universität, Frankfurt am Main, Germany
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21
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Prag S, Lepekhin EA, Kolkova K, Hartmann-Petersen R, Kawa A, Walmod PS, Belman V, Gallagher HC, Berezin V, Bock E, Pedersen N. NCAM regulates cell motility. J Cell Sci 2002; 115:283-92. [PMID: 11839780 DOI: 10.1242/jcs.115.2.283] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Cell migration is required during development of the nervous system. The regulatory mechanisms for this process, however, are poorly elucidated. We show here that expression of or exposure to the neural cell adhesion molecule (NCAM) strongly affected the motile behaviour of glioma cells independently of homophilic NCAM interactions.
Expression of the transmembrane 140 kDa isoform of NCAM (NCAM-140) caused a significant reduction in cellular motility, probably through interference with factors regulating cellular attachment, as NCAM-140-expressing cells exhibited a decreased attachment to a fibronectin substratum compared with NCAM-negative cells. Ectopic expression of the cytoplasmic part of NCAM-140 also inhibited cell motility, presumably via the non-receptor tyrosine kinase p59fyn with which NCAM-140 interacts.
Furthermore, we showed that the extracellular part of NCAM acted as a paracrine inhibitor of NCAM-negative cell locomotion through a heterophilic interaction with a cell-surface receptor. As we showed that the two N-terminal immunoglobulin modules of NCAM, which are known to bind to heparin, were responsible for this inhibition, we presume that this receptor is a heparan sulfate proteoglycan. A model for the inhibitory effect of NCAM is proposed, which involves competition between NCAM and extracellular components for the binding to membrane-associated heparan sulfate proteoglycan.
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Affiliation(s)
- Søren Prag
- Protein Laboratory, Institute of Molecular Pathology, University of Copenhagen, Denmark
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22
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Abstract
This study aims at the in situ identification of factors mediating glioma cell invasion requiring adhesion, extracellular matrix degradation, and migration. Forty-five gliomas (astrocytomas, glioblastomas, oligodendrogliomas, and mixed gliomas) were investigated for the immunohistochemical expression of the membrane protein CD44s, the basal lamina proteins laminin, collagen IV, and fibronectin, the lectin galectin-3 recognizing tenascin and N-CAM, as well as for the matrix-degrading enzymes metalloproteinases MMP-2, MMP-9, and cathepsin D. Besides vessels expressing basal lamina proteins, tenascin, MMP-2, MMP-9, and galectin-3, tumor cells revealed strong immunoreactivity for CD44s, tenascin, galectin-3, and N-CAM, which was restricted to solid tumor masses. Single invading cells displayed distinct expression of MMP-2 and MMP-9, also found in solid tumor areas, as well as of cathepsin D. Restricted expression of CD44s, galectin-3, tenascin, and N-CAM in solid tumor masses seems to contribute to homotypical tumor cell adhesion. However, switching to an invasive phenotype, single tumor cells lack this expression pattern and acquire degrading and phagocytic activities by expressing cathepsin D, MMP-2, and MMP-9, which are also expressed by solid tumor masses facilitating the loosening and invasion of single neoplastic cells. The blocking of these factors may be of potential benefit in anti-invasive therapy.
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Affiliation(s)
- D S Tews
- Division of Neuropathology, Medical Center, Johannes Gutenberg University, Mainz, Germany.
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23
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Vasse M, Thibout D, Paysant J, Legrand E, Soria C, Crépin M. Decrease of breast cancer cell invasiveness by sodium phenylacetate (NaPa) is associated with an increased expression of adhesive molecules. Br J Cancer 2001; 84:802-7. [PMID: 11259095 PMCID: PMC2363819 DOI: 10.1054/bjoc.2000.1648] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Sodium phenylacetate (NaPa), a non-toxic phenylalanine metabolite, has been shown to induce in vivo and in vitro cytostatic and antiproliferative effects on various cell types. In this work, we analysed the effect of NaPa on the invasiveness of breast cancer cell (MDA-MB-231, MCF-7 and MCF-7 ras). Using the highly invasive breast cancer cell line MDA-MB-231, we demonstrated that an 18-hour incubation with NaPa strongly inhibits the cell invasiveness through Matrigel (86% inhibition at 20 mM of NaPa). As cell invasiveness is greatly influenced by the expression of urokinase (u-PA) and its cell surface receptor (u-PAR) as well as the secretion of matrix metalloproteinases (MMP), we tested the effect of NaPa on these parameters. An 18-hour incubation with NaPa did not modify u-PA expression, either on MDA-MB-231 or on MCF-7 and MCF-7 ras cell lines, and induced a small u-PA decrease after 3 days of treatment of MDA-MB-321 with NaPa. In contrast, an 18 h incubation of MDA-MB-231 increased the expression of u-PAR and the secretion of MMP-9. As u-PAR is a ligand for vitronectin, a composant of the extracellular matrix, these data could explain the increased adhesion of MDA-MB-231 to vitronectin, while cell adhesivity of MCF-7 and MCF-7 ras was unmodified by NaPa treatment. NaPa induced also an increased expression of both Lymphocyte Function-Associated-1 (LFA-1) and Intercellular Adhesion Molecule-1 (ICAM-1), which was obvious from 18 hour incubation with NaPa for the MDA-MB-231 cells, but was delayed (3 days) for MCF-7 and MCF-7 ras. Only neutralizing antibodies against LFA-1 reversed the decreased invasiveness of NaPa-treated cells. Therefore we can conclude that the strong inhibition of MDA-MB-231 invasiveness is not due to a decrease in proteases involved in cell migration (u-PA and MMP) but could be related both to the modification of cell structure and an increased expression of adhesion molecules such as u-PAR and LFA-1.
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Affiliation(s)
- M Vasse
- Laboratoire DIFEMA, Groupe de Recherche MERCI, Faculté de Médecine et Pharmacie de Rouen, 22 Bd Gambetta, 76183 Rouen Cedex, France
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24
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Alonso DF, Farina HG, Arregui C, Aon MA, Gomez DE. Modulation of urokinase-type plasminogen activator and metalloproteinase activities in cultured mouse mammary-carcinoma cells: enhancement by paclitaxel and inhibition by nocodazole. Int J Cancer 1999; 83:242-6. [PMID: 10471534 DOI: 10.1002/(sici)1097-0215(19991008)83:2<242::aid-ijc16>3.0.co;2-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Paclitaxel is a potent anti-tumor drug used in the treatment of breast cancer. It induces de-centralization of the microtubular system in tumor cells, blocking cell division. In the search for dissemination to a secondary site, cancer cells are capable of degrading most components of the extracellular matrix via an extracellular proteolytic cascade, including urokinase-type plasminogen activator (uPA) and the matrix metalloproteinases (MMPs). In the present study, the effects of paclitaxel and nocodazole, 2 drugs known to affect microtubules with opposite mechanisms of action, have been tested for their effect on the secretion of uPA and MMPs in cultures of F3II mouse mammary-tumor cells. Tumor-derived uPA activity significantly increased after pre-treatment of tumor cells for 24 hr with micromolar concentrations of paclitaxel (4 microM), while decreasing after pre-treatment with nocodazole (1 microM). A similar modulation was found for MMP-9 by zymographic analysis. Immunofluorescence and Western-blot analysis confirmed the formation of parallel microtubule fragments in paclitaxel-treated cells and almost complete de-polymerization of microtubules in nocodazole-treated ones. Our data suggest that, through opposite actions on microtubule organization and dynamics, paclitaxel and nocodazole exert inverse modulation of tumor-derived proteolytic activity in mammary tumor cells.
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Affiliation(s)
- D F Alonso
- Laboratory of Molecular Oncology, Department of Science and Technology, Quilmes National University, Buenos Aires, Argentina
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25
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Abbate M, Brown D, Bonventre JV. Expression of NCAM recapitulates tubulogenic development in kidneys recovering from acute ischemia. THE AMERICAN JOURNAL OF PHYSIOLOGY 1999; 277:F454-63. [PMID: 10484529 DOI: 10.1152/ajprenal.1999.277.3.f454] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recovery of the kidney from acute renal failure relies on a sequence of events including epithelial cell dedifferentiation and proliferation followed by differentiation and restoration of the functional integrity of the nephron. The factors responsible for, and the significance of, reversion to a less differentiated cell phenotype and its relationship to the proliferative response after ischemia are poorly understood. In an attempt to identify adhesion molecules that may be influential in the recovery process, the expression of neural cell adhesion molecule (NCAM) and markers of epithelial differentiation and proliferation were analyzed at various times after an ischemic insult. In maturing nephrons, NCAM is detectable by immunohistochemistry in renal vesicles, S-shaped bodies, and early tubules. There is minimal cellular NCAM expression in normal tubules of the adult kidney. In contrast, in postischemic kidneys, NCAM expression is abundant in S3 proximal tubule cells 5 days after reperfusion. As in developing tubules, NCAM is concentrated in basal and lateral aspects of cells that have no apical gp330 or dipeptidyl peptidase IV detectable on their brush border. The expression of NCAM is preceded by disassembly of the brush border and proliferation of surviving S3 cells, which is most prominent at 2 days postischemia. NCAM expression persists in some flattened and dedifferentiated cells for up to 7 wk after ischemia. Thus proximal tubule epithelial cells of the postischemic kidney express NCAM in a pattern that recapitulates the expression of NCAM in the developing kidney. Such reversion of phenotype extends at least back to the early stages of renal vesicle formation, and this reversion may represent a critical step in the reestablishment of a normal tubule. NCAM-matrix interactions may mediate the motogenic and mitogenic responses of the dedifferentiated epithelium that are critical to reestablishment of a functional proximal tubule.
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Affiliation(s)
- M Abbate
- Renal Unit, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
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26
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Chintala SK, Tonn JC, Rao JS. Matrix metalloproteinases and their biological function in human gliomas. Int J Dev Neurosci 1999; 17:495-502. [PMID: 10571411 DOI: 10.1016/s0736-5748(99)00010-6] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Gliomas, a type of devastating primary brain tumors, are distinct from other solid, non-neural primary neoplasms, in that they display extensive infiltrative invasive behavior but seldom metastasize to distant organs. This invasiveness into the surrounding normal brain tissue makes gliomas a major challenge for clinical intervention. Total surgical resection of gliomas is not possible, and recurrence of tumor growth is common; mean survival time is 8-12 months. Although substantial progress has been made recently toward understanding the behavior of gliomas, the mechanisms that facilitate invasion are still poorly documented. Clues to the invasion process have been ascertained through clarification of the key roles played by the extracellular matrix (ECM), cell-adhesion molecules and matrix degrading proteases. Serine proteases and metalloproteinases have been implicated in glioma tumor cell-invasion. Matrix metalloproteinases (MMPs) in particular can degrade almost all known ECM components and seem to play important roles in mediating glioblastoma tumor cell invasion. This review focuses on recent developments concerning the role of MMPs in the invasiveness of human gliomas.
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Affiliation(s)
- S K Chintala
- Department of Neurosurgery, The University of Texas, M. D. Anderson Cancer Center, Houston 77030, USA
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27
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Skladchikova G, Ronn LC, Berezin V, Bock E. Extracellular adenosine triphosphate affects neural cell adhesion molecule (NCAM)-mediated cell adhesion and neurite outgrowth. J Neurosci Res 1999; 57:207-18. [PMID: 10398298 DOI: 10.1002/(sici)1097-4547(19990715)57:2<207::aid-jnr6>3.0.co;2-m] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The neural cell adhesion molecule (NCAM) plays an important role in synaptic plasticity in embryonic and adult brain. Recently, it has been demonstrated that NCAM is capable of binding and hydrolyzing extracellular ATP. The purpose of the present study was to evaluate the role of extracellular ATP in NCAM-mediated cellular adhesion and neurite outgrowth. We here show that extracellularly added adenosine triphosphate (ATP) and its structural analogues, adenosine-5'-O-(3-thiothiophosphate), beta, gamma-methylenadenosine-5'-triphosphate, beta, gamma-imidoadenosine-5-triphosphate, and UTP, in varying degrees inhibited aggregation of hippocampal neurons. Rat glial BT4Cn cells are unable to aggregate when grown on agar but acquire this capacity when transfected with NCAM. However, addition of extracellular ATP to NCAM-transfected BT4Cn cells inhibited aggregation. Furthermore, neurite outgrowth from hippocampal neurons in cultures allowing NCAM-homophilic interactions was inhibited by addition of extracellular nucleotides. These findings indicate that NCAM-mediated adhesion may be modulated by extracellular ATP. Moreover, extracellularly added ATP stimulated neurite outgrowth from hippocampal neurons under conditions non-permissive for NCAM-homophilic interactions, and neurite outgrowth stimulated by extracellular ATP could be inhibited by a synthetic peptide corresponding to the so-called cell adhesion molecule homology domain (CHD) of the fibroblast growth factor receptor (FGFR) and by FGFR antibodies binding to this domain. Antibodies against the fibronectin type-III homology modules of NCAM, in which a putative site for ATP binding and hydrolysis is located, also abolished the neurite outgrowth-promoting effect of ATP. The non-hydrolyzable analogues of ATP all strongly inhibited neurite outgrowth. Our results indicate that extracellular ATP may be involved in synaptic plasticity through a modulation of NCAM-mediated adhesion and neurite outgrowth.
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Affiliation(s)
- G Skladchikova
- Protein Laboratory, Institute of Molecular Pathology, University of Copenhagen, Copenhagen, Denmark.
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28
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Lukes A, Mun-Bryce S, Lukes M, Rosenberg GA. Extracellular matrix degradation by metalloproteinases and central nervous system diseases. Mol Neurobiol 1999; 19:267-84. [PMID: 10495107 DOI: 10.1007/bf02821717] [Citation(s) in RCA: 183] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Matrix metalloproteinases (MMPs) are a gene family of neutral proteases involved in normal and pathological processes in the central nervous system (CNS). Normally released into the extracellular space, MMPs break down the extracellular matrix (ECM) to allow cell growth and to facilitate remodeling. Proteolysis becomes pathological when the normal balance between the proteases and their inhibitors, tissue inhibitors to metalloproteinases (TIMPs), is lost. Cancer cells secrete neutral proteases to facilitate spread through the ECM. MMPs increase capillary permeability, and they have been implicated in demyelination. Neurological diseases, such as brain tumors, multiple sclerosis, Guillain-Barré, ischemia, Alzheimer's disease, and infections, lead to an increase in the matrix-degrading proteases. Two classes of neutral proteases have been extensively studied, namely the MMPs and the plasminogen activators (PAs), which act in concert to attack the ECM. After proteolytic injury occurs, the process of ECM remodeling begins, which can lead to fibrosis of blood vessels and gliosis. TIMPs are increased after the acute injury and may add to the fibrotic buildup of ECM components. Thus, an imbalance in proteolytic activity either during the acute injury or in recovery may aggravate the underlying disease process. Agents that affect the proteolytic process at any of the regulating sites are potentially useful in therapy.
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Affiliation(s)
- A Lukes
- Department of Neurology, University of New Mexico School of Medicine, Albuquerque, USA.
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29
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Chintala SK, Rao JS. Matrix metalloproteinases: Regulation and biological functions. J CHEM SCI 1999. [DOI: 10.1007/bf02869915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Kleinschmidt-DeMasters BK, Orr EA, Savelieva E, Owens GC, Kruse CA. Paucity of retinoic acid receptor alpha (RAR alpha) nuclear immunostaining in gliomas and inability of retinoic acid to influence neural cell adhesion molecule (NCAM) expression. J Neurooncol 1999; 41:31-42. [PMID: 10222420 DOI: 10.1023/a:1006162211296] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Neural cell adhesion molecule (NCAM) is down-regulated during periods of embryological cell migration and may be important in local tumor migration or metastases. Conflicting information exists in the literature about NCAM expression in human glial tumors and little is known about its expression in human brain metastases. We immunohistochemically stained a panel of 43 primary human brain tumors and their cultured counterparts for NCAM including glioblastoma multiformes, anaplastic astrocytomas, oligodendrogliomas, and contrasted their staining with a panel of 3 meningiomas, 11 brain metastases, and 5 normal brain samples utilizing the monoclonal antibody NKH-1. Most gliomas and metastatic melanomas and lung carcinomas showed a high percentage of cells positive for NCAM expression while NCAM staining was negative for other carcinomas. No difference was seen between intensity or percentage of cells that were NCAM positive, based on tumor grade or type. In glioma cell lines, NCAM expression was lost upon passage. In 15 glioma cell lines we also determined NCAM isoform expression by reverse transcription/polymerase chain reaction (RT/PCR) and found that 6 of 15 had message for NCAM 180, 8 of 15 for NCAM 140, and only 3 of 15 had message for NCAM 120. Normal brains always contained message for the 180 isoform and usually had mRNA for all 3 isoforms. Using monoclonal antibodies for retinoic acid receptor alpha (RAR alpha), we found nuclear staining in melanomas and lung carcinomas metastatic to brain and only rarely in gliomas. Neither the relative antigen density of NCAM nor the percent of NCAM-positive cells appreciably changed upon incubation with retinoic acid (RA), as measured by flow cytometry. RAR alpha was not found at a level measurable by immunohistochemistry in nuclei of most glial tumors, providing an explanation for why RA might not induce NCAM expression. Whether paucity of RAR alpha on primary gliomas might also correlate with results from clinical trials showing limited efficacy of RA in treatment of human gliomas awaits further study.
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Sasaki H, Yoshida K, Ikeda E, Asou H, Inaba M, Otani M, Kawase T. Expression of the neural cell adhesion molecule in astrocytic tumors: an inverse correlation with malignancy. Cancer 1998; 82:1921-31. [PMID: 9587126 DOI: 10.1002/(sici)1097-0142(19980515)82:10<1921::aid-cncr16>3.0.co;2-v] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Cell adhesion molecules are among the key factors in the development of the malignant potential of brain tumors. The aim of this study was to investigate the expression of the neural cell adhesion molecule (NCAM) in human astrocytic tumors and assess any relationship between NCAM expression and the degree of malignancy. METHODS The expression of NCAM was examined in 52 astrocytic tumors by Western blot analysis. From them the authors selected 23 adult supratentorial ordinary astrocytic tumors and performed quantitative Western blot analysis for each isoform (NCAM 172-180, NCAM 145, NCAM 125-130) to investigate any correlation between the expression of each NCAM isoform and the histologic and biologic malignancy (histology, proliferating cell indices [PCIs] determined by MIB-1 immunohistochemistry, and manifestation on magnetic resonance images [MRIs]). Immunohistochemistry with antihuman NCAM monoclonal antibody was also performed on the tumors from which cryostat sections were available. RESULTS Most of the astrocytomas and anaplastic astrocytomas revealed 3 bands at 180, 145, and 125-130kD, whereas in glioblastomas the bands tended to diminish. The expression of each NCAM isoform in astrocytic tumors decreased in proportion to the progression of the histologic malignancy, and the results were also corroborated by immunohistochemical evaluation. An inverse correlation was also observed between the amount of NCAM expression and MIB-1 PCIs. NCAM expression was hardly detectable in those tumors with highly invasive manifestation on MRIs. CONCLUSIONS To the authors' knowledge, this study provides the first direct evidence that NCAM is down-regulated in the development of the malignancy of astrocytic tumors; and it is suggested that reduced NCAM expression might be involved in the development of biologic malignancy.
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Affiliation(s)
- H Sasaki
- Department of Neurosurgery, School of Medicine, Keio University, Tokyo, Japan
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Abstract
BACKGROUND: Cytotoxic therapy for malignant gliomas is limited by poor delivery and drug resistance, and local therapy is ineffective in managing migratory cells. However, recent developments in malignant glioma therapy involve trials of cytostatic rather than conventional cytotoxic agents. METHODS: The biology of the brain extracellular matrix, tumor invasion, and angiogenesis are reviewed, and the cytostatic agents that inhibit matrix metalloproteinases, angiogenesis, cell proliferation, and signal transduction are discussed, as well as studies of the angiogenic and migratory capacity of malignant brain tumors. RESULTS: Two specific and interrelated areas, anti-invasion (migration) and anti-angiogenesis, are potential areas to develop new treatment strategies. Tumor invasion and angiogenesis are important components of the spread and biologic effects of malignant gliomas. Several proteinase inhibitors are in clinical trial, as well as anti-angiogenic agents and signal transduction cascade inhibitors. CONCLUSIONS: Biologic control of brain tumor cell populations may offer a new management approach to add to currently available management options for malignant brain tumors.
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Affiliation(s)
- T Mikkelsen
- Henry Ford Midwest Neuro-Oncology Center, Department of Neurosurgery, Detroit, Ml 48202, USA
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33
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Vawter MP, Cannon-Spoor HE, Hemperly JJ, Hyde TM, VanderPutten DM, Kleinman JE, Freed WJ. Abnormal expression of cell recognition molecules in schizophrenia. Exp Neurol 1998; 149:424-32. [PMID: 9500955 DOI: 10.1006/exnr.1997.6721] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Schizophrenia is a neuropsychiatric disorder of unknown etiology associated with subtle changes in brain morphology. The cell recognition molecules (CRMs) neural cell adhesion molecule (N-CAM) and L1 are involved in morphoregulatory events and numerous neurodevelopmental processes. We found a selective increase of 105- to 115-kDa N-CAM in the hippocampus and prefrontal cortex of patients with schizophrenia while other N-CAM isoforms and L1 proteins were not altered. There was also evidence for an abnormality in CRM expression in schizophrenic patients: concentrations of 200-kDa L1 were strongly correlated with expression of N-CAM isoforms and cleaved L1 proteins in controls, whereas these correlations were absent in patients with schizophrenia. The increase of the 105- to 115-kDa N-CAM isoform in the brains of patients with schizophrenia confirms previous cerebrospinal fluid findings. Increased N-CAM in schizophrenia may result from structural brain abnormalities, from glial processing of N-CAM, or from an aberration in the regulation of N-CAM expression.
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Affiliation(s)
- M P Vawter
- Section on Preclinical Neuroscience, NIMH Neuroscience Center at Saint Elizabeths, Washington, DC 20032, USA
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34
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Rønn LC, Pedersen N, Jahnsen H, Berezin V, Bock E. Brain plasticity and the neural cell adhesion molecule (NCAM). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1997; 429:305-22. [PMID: 9413583 DOI: 10.1007/978-1-4757-9551-6_22] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- L C Rønn
- Protein Laboratory, Institute for Molecular Pathology, Copenhagen N, Denmark.
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35
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Kobayashi S, Vidal I, Pena JD, Hernandez MR. Expression of neural cell adhesion molecule (NCAM) characterizes a subpopulation of type 1 astrocytes in human optic nerve head. Glia 1997; 20:262-73. [PMID: 9215735 DOI: 10.1002/(sici)1098-1136(199707)20:3<262::aid-glia10>3.0.co;2-s] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The human optic nerve contains a heterogeneous population of astrocytes. In situ, a specialized subpopulation of astrocytes was distinguished in the adult optic nerve head by expression of neural cell adhesion molecule (NCAM). To further study the biology of astrocytes, we have developed and characterized cells grown from explanted optic nerve heads and myelinated optic nerves as in vitro model systems. Second or third passage cells were processed for immunocytochemistry using antibodies against glial fibrillary acidic protein (GFAP) and cell surface epitopes: CD56/NCAM, HNK-1/NCAM, A2B5, and O4. Synthesis and gene expression of NCAM were characterized by Western blot analysis and RNase protection assay. Cells grown from myelinated optic nerves expressing GFAP, but not NCAM or A2B5, were identified as type 1A astrocytes, and cells expressing GFAP and A2B5, but not NCAM, were identified as type 2 astrocytes. Cells grown from explanted optic nerve head expressing GFAP, NCAM, and O4 were identified as type 1B astrocytes. Expression of NCAM by type 1B astrocytes may provide these cells with adhesion properties that allow them specialized responses in their microenvironment. Astrocytes from the lamina cribrosa may form a functional barrier to prevent myelination of the retina. In glaucoma, these astrocytes may be exposed to stresses due to fluctuation in intraocular pressure and therefore participate in the optic nerve changes associated with glaucomatous optic neuropathy.
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Affiliation(s)
- S Kobayashi
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, Missouri 63110, USA
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36
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Maidment SL, Rucklidge GJ, Rooprai HK, Pilkington GJ. An inverse correlation between expression of NCAM-A and the matrix-metalloproteinases gelatinase-A and gelatinase-B in human glioma cells in vitro. Cancer Lett 1997; 116:71-7. [PMID: 9177460 DOI: 10.1016/s0304-3835(97)00171-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Matrix metalloproteinases (MMPs) are an homologous family of proteolytic enzymes capable of degrading components of the extracellular matrix (ECM) and thereby facilitating the invasion of tumour cells into normal tissues. The neural cell adhesion molecules (NCAMs) of neuronal and glial cells provide a Ca2+-independent mechanism for cell-cell and cell-ECM adhesion. NCAMs are downregulated to promote cell disaggregation during cell migration in the developing nervous system whereas MMPs facilitate migration. Recent studies have shown downregulation of MMP secretion in rat glioma cells transfected with an NCAM cDNA, implying an inverse correlation between NCAM and MMP expression. The purpose of this study was to establish whether such a correlation could be demonstrated in a panel of nine human glioma cell-lines, one metastatic carcinoma and one foetal astrocyte derived cell line. The secretion of two MMPs, 72 kDa gelatinase (MMP-2 or gelatinase-A) and 92 kDa gelatinase (MMP-9 or gelatinase-B), was investigated using SDS-PAGE zymography; NCAM-A was assayed by an immunochemiluminescent assay following SDS-PAGE of whole-cell extracts. An inverse correlation was found between the expression of NCAM-A and that of both MMPs studied although the patterns of expression showed no obvious correlation with histological type or grade of the parent tumours. Our results suggest that downregulation of NCAM-A may contribute to tumour invasiveness by promoting both cell disaggregation and protease secretion.
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Affiliation(s)
- S L Maidment
- Department of Neuropathology, Institute of Psychiatry, Denmark Hill, London, UK.
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Borchers AH, Sanders LA, Bowden GT. Regulation of matrilysin expression in cells of squamous cell carcinoma by E-cadherin-mediated cell-cell contact. J Cancer Res Clin Oncol 1997; 123:13-20. [PMID: 8996535 DOI: 10.1007/bf01212609] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A critical attribute of invasive carcinomas is their ability to degrade components of the extracellular matrix, a process achieved by the matrix metalloproteases. In the human squamous cell carcinoma cell line II-4, mRNA and protein expression of the matrix metalloprotease matrilysin was observed to be significantly higher in confluent than in log-phase growth conditions. The purpose of this study was to determine the basis for this switch in constitutive matrilysin expression. Conditioned medium from confluent cultures did not induce matrilysin in log-phase cultures, nor did conditioned medium from log-phase cultures repress matrilysin expression in confluent cultures. Thus, matrilysin expression was found not to be controlled by factors autocrine product. Matrilysin protein levels were, however, found to be directly correlated to the degree of cell-cell contact. Incubation of confluent cultures in 30 microM calcium medium, which disrupts E-cadherin-mediated cell-cell contact, was subsequently found to inhibit matrilysin expression, as did treatment with an anti-E-cadherin-neutralizing antibody. These results demonstrate that the degree of cell-cell contact mediated by the E-cadherin cell-adhesion molecule can influence constitutive metalloprotease expression levels in cultured squamous cell carcinoma cells.
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Affiliation(s)
- A H Borchers
- Department of Radiation Oncology, University of Arizona Medical Center, Tucson 85724, USA
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MacDougall JR, Matrisian LM. Contributions of tumor and stromal matrix metalloproteinases to tumor progression, invasion and metastasis. Cancer Metastasis Rev 1995; 14:351-62. [PMID: 8821095 DOI: 10.1007/bf00690603] [Citation(s) in RCA: 306] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The malignant progression of tumors is driven by the expression of oncogenes and loss of expression of tumor suppressor genes; factors that are intrinsic to cancer cells. The phenotypic changes brought about by the gain or loss of expression of oncogenes and tumor suppressor genes lead to the acquisition of malignant traits, namely, the ability to invade into and grow in ectopic tissue environments. Recently, however, focus in cancer research has widened from the cancer cell to include the surrounding tumor stroma as an integral player in the process of tumor progression. One of the areas in cancer research contributing to this enhanced appreciation of stromal involvement in tumor progression and metastasis is that of matrix metalloproteinases (MMPs). This review provides an overview of the characteristics of MMPs and discusses their role in the progression and metastasis of tumors. Initially, attention will focus on the regulation of MMPs in tumor cells but will switch to discourse on stromal expression of MMPs in tumors and speculation on the functional consequences of stromal expression of MMPs.
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Affiliation(s)
- J R MacDougall
- Department of Cell Biology, Vanderbilt University, Nashville, Tennessee 37232-2175, USA
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Kurpad SN, Zhao XG, Wikstrand CJ, Batra SK, McLendon RE, Bigner DD. Tumor antigens in astrocytic gliomas. Glia 1995; 15:244-56. [PMID: 8586461 DOI: 10.1002/glia.440150306] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Gliomas affect 15,000 to 17,000 Americans every year and carry a dismal prognosis. The potential of immunologically mediated diagnosis and therapy, although greatly enhanced since the advent of monoclonal antibodies, has not been fully realized due to significant problems, most especially the challenge of identifying antigenic molecules specific to glial tumors. Other problematic issues include antigen-associated factors such as heterogeneity, modulation, shedding, and cross-reactivity with normal cells, and factors associated with therapeutic agent delivery, typically variable tumor perfusion and unfavorable diffusional forces in tumor microenvironment. An understanding of these problems called for the delineation of operationally specific antigens (tumor-associated antigens not expressed by the normal central nervous system) combined with the use of compartmental therapeutic approaches to increase the specificity of therapy. Numerous antigens have been identified and are classified as extracellular/matrix-associated, membrane-associated, and intracellular antigens. Nevertheless, only a few have been demonstrated to be of significant therapeutic and diagnostic utility. These few include the extracellular matrix-associated antigens tenascin and GP 240, defined by the monoclonal antibodies 81C6 and Mel-14, both of which are now in Phase I clinical trials, and membrane-associated ganglioside molecules, primarily 3', 6'-isoLD1, defined by the antibody DMAb-22. Recent identification of the overexpression of a deletion variant of the epidermal growth factor receptor (EGFRvIII) in up to 50% of the more malignant glial tumors and the subsequent creation of monoclonal antibodies that are specific to this molecule and do not recognize the wild-type EGFR provide the most exciting development yet in the design of specific antiglioma immunoconjugates. In addition, the tumor-specific nature of EGFRvIII combined with improved knowledge of immune mechanisms, especially in the context of the central nervous system, will facilitate the design of highly selective cell-mediated therapeutic approaches with a view toward obtaining tumor-specific immunity.
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Affiliation(s)
- S N Kurpad
- Department of Pathology, Duke University Medical Center, Durham, North Carolina 27710, USA
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40
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Bolon I, Gouyer V, Devouassoux M, Vandenbunder B, Wernert N, Moro D, Brambilla C, Brambilla E. Expression of c-ets-1, collagenase 1, and urokinase-type plasminogen activator genes in lung carcinomas. THE AMERICAN JOURNAL OF PATHOLOGY 1995; 147:1298-310. [PMID: 7485393 PMCID: PMC1869515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The c-ets-1 transcription factor has been involved in the in vitro transactivation of matrix-degrading protease genes that might play an important role in tumor invasion. Using in situ hybridization, we analyzed serial frozen sections for c-ets-1, collagenase 1, and urokinase-type plasminogen activator gene expression in 54 lung carcinomas including 34 non-neuroendocrine carcinomas (18 squamous carcinomas, 10 adenocarcinomas, 3 large cell carcinomas, and 3 basaloids) and 20 neuroendocrine carcinomas (7 small cell lung carcinomas, 4 large cell neuroendocrine carcinomas, 4 well differentiated neuroendocrine carcinomas, and 5 carcinoids). c-ets-1 gene was expressed in stromal cells in 44/54 lung carcinomas including one metastasizing carcinoid. c-ets-1 transcripts were also detected in cancer cells more frequently in neuroendocrine than in non-neuroendocrine carcinomas (P = 0.0059) and in stages III and IV and metastasis more frequently than in stages I and II ( P = 0.0065). Collagenase 1 gene was expressed in 16/34 non-neuroendocrine tumors and in 1/20 neuroendocrine tumors, either in stromal (12/17) or in cancer cells (6/17). Urokinase-type plasminogen activator mRNAs were expressed in 45/54 lung carcinomas in stromal and/or cancer cells. In non-neuroendocrine tumors, c-ets-1 and collagenase 1 gene expressions in stromal cells were correlated. These results demonstrate that the transcription factor c-ets-1, collagenase 1, and urokinase-type plasminogen activator are involved in lung cancer invasion and suggest that c-ets-1 protein might transactivate collagenase 1 gene during tumor invasion.
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Affiliation(s)
- I Bolon
- Airways and Lung Cancer Research Group, Institute A. Bonniot, Faculté de médecine, Grenoble, France
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Meyer MB, Bastholm L, Nielsen MH, Elling F, Rygaard J, Chen W, Obrink B, Bock E, Edvardsen K. Localization of NCAM on NCAM-B-expressing cells with inhibited migration in collagen. APMIS 1995; 103:197-208. [PMID: 7755976 DOI: 10.1111/j.1699-0463.1995.tb01096.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The extracellular matrix is a key element in neuronal development and tumour invasion, providing a substratum which sustains the adhesion and migration of cells. In order to study interactions between the neural cell adhesion molecule (NCAM) and collagen, we transfected mouse L cells with cDNA encoding the human transmembrane NCAM isoform of 140 kDa (NCAM-B). An L-cell/collagen type I system was used to study the influence of NCAM expression on in vitro invasion. We here report that migration of NCAM-expressing cells in collagen was inhibited compared to that of NCAM-negative cells transfected with the empty vector. Immunofluorescence confocal laser scanning microscopy (CLSM) and immunogold electron microscopy using anti-human NCAM antibodies demonstrated a heterogeneous distribution of NCAM on the plasma membrane of transfected L cells grown on collagen. NCAM was preferentially located at the surface of broad cytoplasmic protrusions and slender extensions, some of which were facing the collagen. This was in contrast to the homogeneous surface distribution of NCAM on cells grown on plastic. These data suggest that NCAM and collagen type I interact, and that this might lead to the migration inhibition of NCAM-expressing cells.
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Affiliation(s)
- M B Meyer
- Department of Electron Microscopy, University Institute of Pathological Anatomy, Copenhagen, Denmark
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42
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Byeon MK, Sugi Y, Markwald RR, Hoffman S. NCAM polypeptides in heart development: association with Z discs of forms that contain the muscle-specific domain. J Cell Biol 1995; 128:209-21. [PMID: 7822416 PMCID: PMC2120321 DOI: 10.1083/jcb.128.1.209] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Previous studies of neural cell adhesion molecule (NCAM) cDNAs have revealed an alternatively spliced set of small exons (12A, 12B, 12C, and 12D) that encode a region in the extracellular portion of the molecule known as the muscle-specific domain (MSD). The entire MSD region can be expressed in skeletal muscle, heart, and skin; only exons 12A and 12D have been found in brain. These studies did not reveal which NCAM polypeptides contain the MSD region or the immunohistochemical distribution of these NCAM molecules. To address these questions, we prepared antibodies against the oligopeptides encoded by exons 12A and 12B and by exons 12C and 12D, and we used these antibodies to study the forms of NCAM containing the MSD region expressed during embryonic chicken heart development. These antibodies recognize certain forms of NCAM found in the heart, but they do not recognize brain NCAM. In the heart, each of the splice variants of NCAM (large cytoplasmic domain, small cytoplasmic domain, and small surface domain) that differ in their mode of attachment to the plasma membrane or in the size of their cytoplasmic domain is expressed in a form that contains and in a form that lacks the MSD region. No microheterogeneity is observed in the size of NCAM molecules containing the MSD region, even at the level of cyanogen bromide fragments, suggesting that exons 12A-D are expressed as a single unit. Depending on the site and the stage of development, the percent of NCAM molecules containing the MSD region can vary from nearly 0 to 100%. In general, this percentage increases during development. In immunohistochemical studies of hearts from stage 18 embryos, forms of NCAM containing the MSD region colocalized with Z discs. No other adhesion molecules were found in this distribution at this early stage of development. Studies on isolated cells in vitro demonstrate that the colocalization with Z discs of NCAM molecules containing the MSD region does not depend on cell-cell contact, and they raise the possibility that this form of NCAM is involved in cell-extracellular matrix interactions. The association of NCAM molecules containing the MSD region with Z discs suggests that this form of NCAM is involved in early myofibrillogenesis.
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Affiliation(s)
- M K Byeon
- Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston 29425
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43
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Edvardsen K, Pedersen PH, Bjerkvig R, Hermann GG, Zeuthen J, Laerum OD, Walsh FS, Bock E. Transfection of glioma cells with the neural-cell adhesion molecule NCAM: effect on glioma-cell invasion and growth in vivo. Int J Cancer 1994; 58:116-22. [PMID: 8014007 DOI: 10.1002/ijc.2910580119] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The tumor growth and the invasive capacity of a rat glioma cell line (BT4Cn) were studied after transfection with the human transmembrane 140-kDa isoform of the neural-cell adhesion molecule, NCAM. After s.c. injection, the NCAM-transfected cells showed a slower growth rate than the parent cell line (BT4Cn). Upon intracerebral implantation with BT4Cn cells and different clones of NCAM-transfected cells, all animals developed neurological symptoms within 13-16 days. However, the tumors showed different growth characteristics. The NCAM-transfected BT4Cn cells were localized in the region of the injection site, with a sharply demarcated border between the tumor and brain tissue. In contrast, the parental cell line showed single-cell infiltration and more pronounced destruction of normal brain tissue. Using a 51Cr-release assay, spleen cells from rats transplanted with BT4Cn tumor cells generally showed a lower cytotoxic response than the spleen cells from rats transplanted with the transfected variants of BT4Cn cells, indicating that the transfection procedure in itself mediated an activation of the immune system. The present data suggest that NCAM may influence the malignant behavior of rat glioma cells in vivo.
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Affiliation(s)
- K Edvardsen
- Research Center for Medical Biotechnology, University of Copenhagen, Panum Institute, Denmark
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