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Article (Scientific journals)
IFN-beta1a (Rebif) modifies the expression of microfilament-associated cell-cell contacts in C6 glioma cells.
Harzheim, Michael; Altenschmidt, Manuela; HENEKA, Michael et al.
2003In Journal of Interferon and Cytokine Research, 23 (2), p. 83 - 89
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Keywords :
Adjuvants, Immunologic; Cadherins; Cell Adhesion Molecules; Phytohemagglutinins; Recombinant Proteins; Vinculin; Interferon-beta; Interferon-gamma; Interferon beta-1a; Adjuvants, Immunologic/pharmacology; Adjuvants, Immunologic/therapeutic use; Astrocytes/physiology; Cadherins/metabolism; Cell Adhesion/immunology; Cell Adhesion Molecules/metabolism; Coculture Techniques; Down-Regulation; Gene Expression Regulation/immunology; Glioma/pathology; Humans; Interferon-beta/genetics; Interferon-beta/pharmacology; Interferon-beta/therapeutic use; Interferon-gamma/immunology; Multiple Sclerosis, Relapsing-Remitting/drug therapy; Multiple Sclerosis, Relapsing-Remitting/immunology; Multiple Sclerosis, Relapsing-Remitting/physiopathology; T-Lymphocytes/drug effects; T-Lymphocytes/metabolism; Tumor Cells, Cultured; Vinculin/metabolism; Immunology; Cell Biology; Virology
Abstract :
[en] Multiple sclerosis (MS) is a chronic inflammatory disease characterized by multifocal demyelination and axonal damage in the central nervous system (CNS). The disruption of the endothelial blood-brain barrier (BBB) with consecutive transmigration of inflammatory cells into the brain parenchyma is of critical importance in the pathogenesis of MS. The integrity of the BBB and the adjacent network of glial cells partially depends on the assembly of intercellular contacts between astrocytes. We demonstrate that recombinant interferon-gamma (rIFN-gamma), a proinflammatory cytokine critically involved in the disruption of the BBB, downregulates the expression of the cell adhesion molecules N-cadherin and vinculin in astrocytic C6 cells using Western blot and immunofluorescence microscopy. By contrast, IFN-beta1a, an established treatment for relapsing-remitting MS, increases the expression of N-cadherin and vinculin and partly inhibits the downregulation of these adhesion molecules by phytohemagglutinin (PHA)-stimulated IFN-gamma-secreting human T lymphocytes in coculture experiments. In summary, we demonstrate that IFN-beta1a modifies the assembly of N-cadherin- and vinculin-mediated intercellular contacts between astrocytic C6 cells in vitro. This effect may also contribute to the therapeutic action of IFN-beta1a in MS.
Disciplines :
Neurology
Author, co-author :
Harzheim, Michael;  Department of Neurology, University of Bonn, Sigmund-Freud-Strasse 25, D-53105 Bonn, Germany. neurologie@uni-bonn.de
Altenschmidt, Manuela;  Department of Neurology, University of Bonn, Bonn, Germany
HENEKA, Michael  ;  Department of Neurology, University of Bonn, Bonn, Germany
Schröder, Rolf;  Department of Neurology, University of Bonn, Bonn, Germany
Klockgether, Thomas;  Department of Neurology, University of Bonn, Bonn, Germany
Schmidt, Stephan;  Department of Neurology, University of Bonn, Bonn, Germany
External co-authors :
yes
Language :
English
Title :
IFN-beta1a (Rebif) modifies the expression of microfilament-associated cell-cell contacts in C6 glioma cells.
Publication date :
February 2003
Journal title :
Journal of Interferon and Cytokine Research
ISSN :
1079-9907
eISSN :
1557-7465
Publisher :
Mary Ann Liebert Inc, United States
Volume :
23
Issue :
2
Pages :
83 - 89
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 07 May 2024

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