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CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver
BACKGROUND & AIMS: IL-17 secreting CD4 (Th17) and CD8 (Tc17) T cells have been implicated in immune-mediated liver diseases, but the molecular basis for their recruitment and positioning within the liver is unknown. METHODS: The phenotype and migratory behaviour of human liver-derived Th17 and T...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3994510/ https://www.ncbi.nlm.nih.gov/pubmed/22796894 http://dx.doi.org/10.1016/j.jhep.2012.07.008 |
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author | Oo, Ye Htun Banz, Vanessa Kavanagh, Dean Liaskou, Evaggelia Withers, David R. Humphreys, Elizabeth Reynolds, Gary M. Lee-Turner, Laura Kalia, Neena Hubscher, Stefan G. Klenerman, Paul Eksteen, Bertus Adams, David H. |
author_facet | Oo, Ye Htun Banz, Vanessa Kavanagh, Dean Liaskou, Evaggelia Withers, David R. Humphreys, Elizabeth Reynolds, Gary M. Lee-Turner, Laura Kalia, Neena Hubscher, Stefan G. Klenerman, Paul Eksteen, Bertus Adams, David H. |
author_sort | Oo, Ye Htun |
collection | PubMed |
description | BACKGROUND & AIMS: IL-17 secreting CD4 (Th17) and CD8 (Tc17) T cells have been implicated in immune-mediated liver diseases, but the molecular basis for their recruitment and positioning within the liver is unknown. METHODS: The phenotype and migratory behaviour of human liver-derived Th17 and Tc17 cells were investigated by flow cytometry and chemotaxis and flow-based adhesion assays. The recruitment of murine Th17 cells to the liver was studied in vivo using intra-vital microscopy. RESULTS: IL-17(+) T cells comprised 1–3% of the T cell infiltrate in inflammatory liver diseases and included both CD4 (Th17) and CD8 (Tc17) cells. They expressed RORC and the IL-23 receptor and included subsets that secreted IL-22 and interferon-γ. Th17 and Tc17 cells expressed high levels of CXCR3 and CCR6, Tc17 cells also expressed CXCR6. Binding to human sinusoidal endothelium from flow was dependent on β1 and β2 integrins, CXCR3, and, in the case of Th17 cells, VAP-1. Th17 recruitment via sinusoids in mice with liver inflammation was reduced by treatment with antibodies against CXCR3 ligands, confirming the role of CXCR3 in Th17 recruitment in vivo. In human liver, IL-17(+) cells were detected in portal infiltrates close to inflamed bile ducts expressing the CCR6 ligand CCL20. Cytokine-treated human cholangiocytes secreted CCL20 and induced CCR6-dependent migration of Th17 cells suggesting that local cholangiocyte chemokine secretion localises Th17 cells to bile ducts. CONCLUSIONS: CXCR3 promotes recruitment of Th17 cells from the blood into the liver in both human and murine liver injury. Their subsequent positioning near bile ducts is dependent on cholangiocyte-secreted CCL20. |
format | Online Article Text |
id | pubmed-3994510 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-39945102014-04-24 CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver Oo, Ye Htun Banz, Vanessa Kavanagh, Dean Liaskou, Evaggelia Withers, David R. Humphreys, Elizabeth Reynolds, Gary M. Lee-Turner, Laura Kalia, Neena Hubscher, Stefan G. Klenerman, Paul Eksteen, Bertus Adams, David H. J Hepatol Research Article BACKGROUND & AIMS: IL-17 secreting CD4 (Th17) and CD8 (Tc17) T cells have been implicated in immune-mediated liver diseases, but the molecular basis for their recruitment and positioning within the liver is unknown. METHODS: The phenotype and migratory behaviour of human liver-derived Th17 and Tc17 cells were investigated by flow cytometry and chemotaxis and flow-based adhesion assays. The recruitment of murine Th17 cells to the liver was studied in vivo using intra-vital microscopy. RESULTS: IL-17(+) T cells comprised 1–3% of the T cell infiltrate in inflammatory liver diseases and included both CD4 (Th17) and CD8 (Tc17) cells. They expressed RORC and the IL-23 receptor and included subsets that secreted IL-22 and interferon-γ. Th17 and Tc17 cells expressed high levels of CXCR3 and CCR6, Tc17 cells also expressed CXCR6. Binding to human sinusoidal endothelium from flow was dependent on β1 and β2 integrins, CXCR3, and, in the case of Th17 cells, VAP-1. Th17 recruitment via sinusoids in mice with liver inflammation was reduced by treatment with antibodies against CXCR3 ligands, confirming the role of CXCR3 in Th17 recruitment in vivo. In human liver, IL-17(+) cells were detected in portal infiltrates close to inflamed bile ducts expressing the CCR6 ligand CCL20. Cytokine-treated human cholangiocytes secreted CCL20 and induced CCR6-dependent migration of Th17 cells suggesting that local cholangiocyte chemokine secretion localises Th17 cells to bile ducts. CONCLUSIONS: CXCR3 promotes recruitment of Th17 cells from the blood into the liver in both human and murine liver injury. Their subsequent positioning near bile ducts is dependent on cholangiocyte-secreted CCL20. Elsevier 2012-11 /pmc/articles/PMC3994510/ /pubmed/22796894 http://dx.doi.org/10.1016/j.jhep.2012.07.008 Text en © 2012 Published by Elsevier B.V. on behalf of European Association of the Study of the Liver. https://creativecommons.org/licenses/by/4.0/This work is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/) , which allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. |
spellingShingle | Research Article Oo, Ye Htun Banz, Vanessa Kavanagh, Dean Liaskou, Evaggelia Withers, David R. Humphreys, Elizabeth Reynolds, Gary M. Lee-Turner, Laura Kalia, Neena Hubscher, Stefan G. Klenerman, Paul Eksteen, Bertus Adams, David H. CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title | CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title_full | CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title_fullStr | CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title_full_unstemmed | CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title_short | CXCR3-dependent recruitment and CCR6-mediated positioning of Th-17 cells in the inflamed liver |
title_sort | cxcr3-dependent recruitment and ccr6-mediated positioning of th-17 cells in the inflamed liver |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3994510/ https://www.ncbi.nlm.nih.gov/pubmed/22796894 http://dx.doi.org/10.1016/j.jhep.2012.07.008 |
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