HLA-DPA1*02:01~B1*01:01 is a risk haplotype for primary sclerosing cholangitis mediating activation of NKp44+ NK cells
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HLA-DPA1*02:01~B1*01:01 is a risk haplotype for primary sclerosing cholangitis mediating activation of NKp44+ NK cells. / Zecher, Britta F; Ellinghaus, David; Schloer, Sebastian; Niehrs, Annika; Padoan, Benedetta; Baumdick, Martin E; Yuki, Yuko; Martin, Maureen P; Glow, Dawid; Schröder-Schwarz, Jennifer; Niersch, Jennifer; Brias, Sébastien; Müller, Luisa M; Habermann, Robin; Kretschmer, Paul; Früh, Tristan; Dänekas, Janis; Wehmeyer, Malte H; Poch, Tobias; Sebode, Marcial; International PSC Study Group (IPSCSG); Ellinghaus, Eva; Degenhardt, Frauke; Körner, Christian; Hoelzemer, Angelique; Fehse, Boris; Oldhafer, Karl J; Schumacher, Udo; Sauter, Guido; Carrington, Mary; Franke, Andre; Bunders, Madeleine J; Schramm, Christoph; Altfeld, Marcus.
in: GUT, Jahrgang 73, Nr. 2, 05.01.2024, S. 325-337.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - HLA-DPA1*02:01~B1*01:01 is a risk haplotype for primary sclerosing cholangitis mediating activation of NKp44+ NK cells
AU - Zecher, Britta F
AU - Ellinghaus, David
AU - Schloer, Sebastian
AU - Niehrs, Annika
AU - Padoan, Benedetta
AU - Baumdick, Martin E
AU - Yuki, Yuko
AU - Martin, Maureen P
AU - Glow, Dawid
AU - Schröder-Schwarz, Jennifer
AU - Niersch, Jennifer
AU - Brias, Sébastien
AU - Müller, Luisa M
AU - Habermann, Robin
AU - Kretschmer, Paul
AU - Früh, Tristan
AU - Dänekas, Janis
AU - Wehmeyer, Malte H
AU - Poch, Tobias
AU - Sebode, Marcial
AU - International PSC Study Group (IPSCSG)
AU - Ellinghaus, Eva
AU - Degenhardt, Frauke
AU - Körner, Christian
AU - Hoelzemer, Angelique
AU - Fehse, Boris
AU - Oldhafer, Karl J
AU - Schumacher, Udo
AU - Sauter, Guido
AU - Carrington, Mary
AU - Franke, Andre
AU - Bunders, Madeleine J
AU - Schramm, Christoph
AU - Altfeld, Marcus
N1 - © Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
PY - 2024/1/5
Y1 - 2024/1/5
N2 - OBJECTIVE: Primary sclerosing cholangitis (PSC) is characterised by bile duct strictures and progressive liver disease, eventually requiring liver transplantation. Although the pathogenesis of PSC remains incompletely understood, strong associations with HLA-class II haplotypes have been described. As specific HLA-DP molecules can bind the activating NK-cell receptor NKp44, we investigated the role of HLA-DP/NKp44-interactions in PSC.DESIGN: Liver tissue, intrahepatic and peripheral blood lymphocytes of individuals with PSC and control individuals were characterised using flow cytometry, immunohistochemical and immunofluorescence analyses. HLA-DPA1 and HLA-DPB1 imputation and association analyses were performed in 3408 individuals with PSC and 34 213 controls. NK cell activation on NKp44/HLA-DP interactions was assessed in vitro using plate-bound HLA-DP molecules and HLA-DPB wildtype versus knock-out human cholangiocyte organoids.RESULTS: NKp44+NK cells were enriched in livers, and intrahepatic bile ducts of individuals with PSC showed higher expression of HLA-DP. HLA-DP haplotype analysis revealed a highly elevated PSC risk for HLA-DPA1*02:01~B1*01:01 (OR 1.99, p=6.7×10-50). Primary NKp44+NK cells exhibited significantly higher degranulation in response to plate-bound HLA-DPA1*02:01-DPB1*01:01 compared with control HLA-DP molecules, which were inhibited by anti-NKp44-blocking. Human cholangiocyte organoids expressing HLA-DPA1*02:01-DPB1*01:01 after IFN-γ-exposure demonstrated significantly increased binding to NKp44-Fc constructs compared with unstimulated controls. Importantly, HLA-DPA1*02:01-DPB1*01:01-expressing organoids increased degranulation of NKp44+NK cells compared with HLA-DPB1-KO organoids.CONCLUSION: Our studies identify a novel PSC risk haplotype HLA-DP A1*02:01~DPB1*01:01 and provide clinical and functional data implicating NKp44+NK cells that recognise HLA-DPA1*02:01-DPB1*01:01 expressed on cholangiocytes in PSC pathogenesis.
AB - OBJECTIVE: Primary sclerosing cholangitis (PSC) is characterised by bile duct strictures and progressive liver disease, eventually requiring liver transplantation. Although the pathogenesis of PSC remains incompletely understood, strong associations with HLA-class II haplotypes have been described. As specific HLA-DP molecules can bind the activating NK-cell receptor NKp44, we investigated the role of HLA-DP/NKp44-interactions in PSC.DESIGN: Liver tissue, intrahepatic and peripheral blood lymphocytes of individuals with PSC and control individuals were characterised using flow cytometry, immunohistochemical and immunofluorescence analyses. HLA-DPA1 and HLA-DPB1 imputation and association analyses were performed in 3408 individuals with PSC and 34 213 controls. NK cell activation on NKp44/HLA-DP interactions was assessed in vitro using plate-bound HLA-DP molecules and HLA-DPB wildtype versus knock-out human cholangiocyte organoids.RESULTS: NKp44+NK cells were enriched in livers, and intrahepatic bile ducts of individuals with PSC showed higher expression of HLA-DP. HLA-DP haplotype analysis revealed a highly elevated PSC risk for HLA-DPA1*02:01~B1*01:01 (OR 1.99, p=6.7×10-50). Primary NKp44+NK cells exhibited significantly higher degranulation in response to plate-bound HLA-DPA1*02:01-DPB1*01:01 compared with control HLA-DP molecules, which were inhibited by anti-NKp44-blocking. Human cholangiocyte organoids expressing HLA-DPA1*02:01-DPB1*01:01 after IFN-γ-exposure demonstrated significantly increased binding to NKp44-Fc constructs compared with unstimulated controls. Importantly, HLA-DPA1*02:01-DPB1*01:01-expressing organoids increased degranulation of NKp44+NK cells compared with HLA-DPB1-KO organoids.CONCLUSION: Our studies identify a novel PSC risk haplotype HLA-DP A1*02:01~DPB1*01:01 and provide clinical and functional data implicating NKp44+NK cells that recognise HLA-DPA1*02:01-DPB1*01:01 expressed on cholangiocytes in PSC pathogenesis.
U2 - 10.1136/gutjnl-2023-329524
DO - 10.1136/gutjnl-2023-329524
M3 - SCORING: Journal article
C2 - 37788895
VL - 73
SP - 325
EP - 337
JO - GUT
JF - GUT
SN - 0017-5749
IS - 2
ER -