CCL21-expression and accumulation of CCR7+ NK cells in livers of patients with primary sclerosing cholangitis

European Journal of Immunology
Annika LangeneckertMarcus Altfeld

Abstract

The pathogenesis of primary sclerosing cholangitis (PSC), an autoimmune liver disease, remains unknown. The aim of this study was to characterize peripheral blood and intrahepatic NK cells from patients with PSC. Peripheral blood samples from patients with PSC, other autoimmune liver diseases, and from healthy control individuals were used, as well as liver tissues from PSC patients undergoing liver transplantation. Multiparameter flow cytometry showed that peripheral blood NK cells from PSC patients were significantly enriched for CCR7+ and CXCR3+ cells, and CCR7+ but not CXCR3+ cells were also significantly increased within intrahepatic NK cells. PSC patients undergoing liver transplantation furthermore had significantly higher plasma levels of the CCR7-ligand CCL21, and the CXCR3-ligands CXCL10 and CXCL11, and significantly higher levels of CCL21, but not CXCL10, were detected in liver tissues. CCR7+ and CXCR3+ NK cells from PSC patients exhibited significantly higher functional capacity in peripheral blood, but not liver tissues, consistent with chronic activation of these NK cells in the inflamed liver. These data show that PSC is characterized by intrahepatic CCL21 expression and accumulation of CCR7+ NK cells in the infl...Continue Reading

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Citations

Feb 16, 2021·Scandinavian Journal of Gastroenterology·Amandeep Kaur DhillonJohannes R Hov
Mar 30, 2021·Frontiers in Immunology·Meifang LiuCai Zhang
Jul 8, 2021·Seminars in Immunopathology·A J HightonM Altfeld
Jan 17, 2022·Current Opinion in Gastroenterology·Evaggelia LiaskouPalak J Trivedi

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