Abstract
Interleukin-26 (IL-26) belongs to the family of cellular cytokines which share sequence homology with IL-10, however, without functional conservation. The il-26 gene is situated on the human chromosome 12q15 in close neighbourhood to the genes for the related T-cellular cytokines interferon-γ (IFN-γ) and IL-22. il-26 was discovered due to its overexpression in T cells after growth transformation with herpesvirus saimiri. IL-26 is produced by activated T cells, forms homodimers, and acts on epithelial target cells such as colon carcinoma cells or keratinocytes. Presumably due to its positive net charge, IL-26 adheres to glycosaminoglycans on cell surfaces. Stimulation with IL-26 results in the phosphorylation and activation of the transcription factors STAT1 and STAT3 and in the induction of CD54 surface expression and secretion of cytokines such as IL-8 and IL-10. These effects are mediated by an IL-26-specific receptor complex consisting of IL-20R1 and IL-10R2. Thus, IL-26 appears to be a rather proinflammatory and cell-surface associated cytokine linking local T-cell activation with epithelial functions.
Keywords: AK155, colon carcinoma, ICAM-1, Interleukin-26, IL-26, herpesvirus saimiri, STAT, T cell
Anti-Inflammatory & Anti-Allergy Agents in Medicinal Chemistry
Title: Interleukin-26, An Epitheliotropic T-Cell Cytokine
Volume: 5 Issue: 3
Author(s): Oliver Braum, Heide Pirzer and Helmut Fickenscher
Affiliation:
Keywords: AK155, colon carcinoma, ICAM-1, Interleukin-26, IL-26, herpesvirus saimiri, STAT, T cell
Abstract: Interleukin-26 (IL-26) belongs to the family of cellular cytokines which share sequence homology with IL-10, however, without functional conservation. The il-26 gene is situated on the human chromosome 12q15 in close neighbourhood to the genes for the related T-cellular cytokines interferon-γ (IFN-γ) and IL-22. il-26 was discovered due to its overexpression in T cells after growth transformation with herpesvirus saimiri. IL-26 is produced by activated T cells, forms homodimers, and acts on epithelial target cells such as colon carcinoma cells or keratinocytes. Presumably due to its positive net charge, IL-26 adheres to glycosaminoglycans on cell surfaces. Stimulation with IL-26 results in the phosphorylation and activation of the transcription factors STAT1 and STAT3 and in the induction of CD54 surface expression and secretion of cytokines such as IL-8 and IL-10. These effects are mediated by an IL-26-specific receptor complex consisting of IL-20R1 and IL-10R2. Thus, IL-26 appears to be a rather proinflammatory and cell-surface associated cytokine linking local T-cell activation with epithelial functions.
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Cite this article as:
Braum Oliver, Pirzer Heide and Fickenscher Helmut, Interleukin-26, An Epitheliotropic T-Cell Cytokine, Anti-Inflammatory & Anti-Allergy Agents in Medicinal Chemistry 2006; 5 (3) . https://dx.doi.org/10.2174/187152306778017674
DOI https://dx.doi.org/10.2174/187152306778017674 |
Print ISSN 1871-5230 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-614X |
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