Abstract
Autoimmune diseases occur when the immune response is targeted to self-antigens, leading to destruction or altered function of specific cells and tissues. Although the aetiology of these diseases has not yet been fully elucidated, it is believed that genetically determined susceptibility and environmental triggers are both implicated in the detrimental immune response against the bodys own tissues. Dendritic cells (DCs) are professional antigen presenting cells that play an important role in maintaining peripheral tolerance by preventing self-reactive T cells from causing autoimmune damage. Thus, alterations in the physiology of DCs are likely to be responsible for defective immune regulatory mechanisms and incomplete tolerance to self. Here, we will focus specifically on the ways in which the immunological synapse occurring at the DC-T cell interface can fine-tune the balance between tolerance and immunity and how alterations of this synapse can determine induction or perpetuation of autoimmune responses. Activating/inhibitory receptors expressed on the surface of DCs and T cells modulate the function of these cells and influence the course of the immune response. Pharmacological approaches that can modulate DC function will be also addressed as a potential antigen-specific strategy in the design of new, noninvasive therapies to prevent or to treat chronic inflammatory autoimmune disorders.
Keywords: Autoimmunity, dendritic cell, T cell, immunological synapse, regulatory T cell, immune tolerance
Current Pharmaceutical Design
Title: The Dendritic Cell-T Cell Synapse as a Determinant of Autoimmune Pathogenesis
Volume: 12 Issue: 2
Author(s): Mirentxu I. Iruretagoyena, Margrit Wiesendanger and Alexis M. Kalergis
Affiliation:
Keywords: Autoimmunity, dendritic cell, T cell, immunological synapse, regulatory T cell, immune tolerance
Abstract: Autoimmune diseases occur when the immune response is targeted to self-antigens, leading to destruction or altered function of specific cells and tissues. Although the aetiology of these diseases has not yet been fully elucidated, it is believed that genetically determined susceptibility and environmental triggers are both implicated in the detrimental immune response against the bodys own tissues. Dendritic cells (DCs) are professional antigen presenting cells that play an important role in maintaining peripheral tolerance by preventing self-reactive T cells from causing autoimmune damage. Thus, alterations in the physiology of DCs are likely to be responsible for defective immune regulatory mechanisms and incomplete tolerance to self. Here, we will focus specifically on the ways in which the immunological synapse occurring at the DC-T cell interface can fine-tune the balance between tolerance and immunity and how alterations of this synapse can determine induction or perpetuation of autoimmune responses. Activating/inhibitory receptors expressed on the surface of DCs and T cells modulate the function of these cells and influence the course of the immune response. Pharmacological approaches that can modulate DC function will be also addressed as a potential antigen-specific strategy in the design of new, noninvasive therapies to prevent or to treat chronic inflammatory autoimmune disorders.
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Cite this article as:
Iruretagoyena I. Mirentxu, Wiesendanger Margrit and Kalergis M. Alexis, The Dendritic Cell-T Cell Synapse as a Determinant of Autoimmune Pathogenesis, Current Pharmaceutical Design 2006; 12 (2) . https://dx.doi.org/10.2174/138161206775193145
DOI https://dx.doi.org/10.2174/138161206775193145 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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