The role of IL-10 in the liver tolerance effect

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Ingelsten, Madeleine,1978Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine (author)

The role of IL-10 in the liver tolerance effect

Article/chapterEnglish2009

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2009

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LIBRIS-ID:oai:gup.ub.gu.se/105679
https://gup.ub.gu.se/publication/105679URI

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Language:English

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Subject category:ref swepub-contenttype
Subject category:kon swepub-publicationtype

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Introduction and aim: A liver graft is less prone to induce rejection compared to a renal graft and previous findings suggest that an auxiliary liver transplantation a few hours before a renal transplantation improves kidney graft survival in highly sensitized patients. Dendritic cells (DC) are important initiators of rejection. During transplantation DC within the allograft become activated and migrate to secondary lymphoid organs where they activate NK cells and alloreactive T cell. The aim of this study was to investigate the role of DC maturation in the liver mediated acceptance of a renal graft. Methods: Real-time PCR was used to compare changes in graft gene expression of IFN-γ, TNF-α, IL-1β and IL-10 in the liver and kidney in patients undergoing combined auxiliary liver-kidney transplantation (n=8). These are inflammatory mediators known to participate in transplantation-induced DC activation. Presence of interleukin (IL) 10 and 12 was measured in peripheral blood in these patients. Monocyte-derived DCs was matured with a cytokine-cocktail consisting of IFN-γ, TNF-α and IL-1β +/- IL-10. The effect of these cytokines on DC secretion of chemokines MIG, IP-10 and I-TAC was investigated with ELISA. Results: The DC-activation-associated inflammatory mediators TNF-α, IL-1β and IFN-γ were similarly upregulated in both liver and kidney grafts after reperfusion. While no reperfusion-dependent mRNA increase for IL-10 was found in transplated grafts, serial measurement of cytokine levels in peripheral blood revealed that IL-10 levels increased 60-fold in serum shortly (within 1 h) after liver, but before kidney, reperfusion and returned to pre-transplant levels at day 2 post-transplantation (n=3). No significant changes were seen in IL-12 levels. DCs matured with a cocktail consisting of IFN-γ, TNF-α and IL-1β demonstrated a strong production of CXCR3-ligands (MIG 280 ng/ml, IP-10 19 ng/ml, I-TAC 619 pg/ml) which was sustained even after removal of the cytokine-cocktail. These chemokines are indispensable for DC-mediated recruitment of blood NK cells into secondary lymphoid organs and their subsequent boosting of TH1-deviated alloresponses. Addition of IL-10 during DC maturation significantly decreased the production of all three CXCR3-ligands (MIG -33%, IP-10 -25%, I-TAC -67%). Conclusions: These findings indicate that IL-10 is selectively and rapidly released during liver transplantation, probably due to accumulation during the ischehmia period. This release may potentially inhibit a TH1-deviating crosstalk between donor DC and recipient NK cells, suggesting a role for IL-10 in the liver-mediated acceptance of a renal graft in highly sensitized patients.

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Gustafsson, Karin,1979Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology (author)
Olausson, Michael,1956Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för kirurgi,Institute of Clinical Sciences, Department of Surgery(Swepub:gu)xolami (author)
Haraldsson, Börje,1957Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine(Swepub:gu)xharbo (author)
Nyström, Jenny,1972Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine(Swepub:gu)xnysje (author)
Karlsson-Parra, Alex,1950Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology(Swepub:gu)xkaale (author)
Göteborgs universitetInstitutionen för medicin, avdelningen för molekylär och klinisk medicin (creator_code:org_t)

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In:World congress of Nephrology, Milan 2009

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