The MICA-129 dimorphism affects NKG2D signaling and outcome of hematopoietic stem cell transplantation
2015 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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The MICA-129 dimorphism affects NKG2D signaling and outcome of hematopoietic stem cell transplantation
Isernhagen, A.; Malzahn, D. ; Viktorova, E.; Elsner, L.; Monecke, S.; von Bonin, F. & Kilisch, M. et al. (2015)
EMBO Molecular Medicine, 7(11) pp. 1480-1502. DOI: https://doi.org/10.15252/emmm.201505246
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- Authors
- Isernhagen, Antje; Malzahn, Doerthe ; Viktorova, Elena; Elsner, Leslie; Monecke, Sebastian; von Bonin, Frederike; Kilisch, Markus; Wermuth, Janne Marieke; Walther, Neele; Balavarca, Yesilda; Stahl-Hennig, Christiane; Engelke, Michael; Walter, Lutz; Bickeboeller, Heike ; Kube, Dieter; Wulf, Gerald; Dressel, Ralf
- Abstract
- The MHC class I chain-related molecule A (MICA) is a highly polymorphic ligand for the activating natural killer (NK)-cell receptor NKG2D. A single nucleotide polymorphism causes a valine to methionine exchange at position 129. Presence of a MICA-129Met allele in patients (n=452) undergoing hematopoietic stem cell transplantation (HSCT) increased the chance of overall survival (hazard ratio [HR]=0.77, P=0.0445) and reduced the risk to die due to acute graft-versus-host disease (aGVHD) (odds ratio [OR]=0.57, P=0.0400) although homozygous carriers had an increased risk to experience this complication (OR=1.92, P=0.0371). Overall survival of MICA-129Val/Val genotype carriers was improved when treated with anti-thymocyte globulin (HR=0.54, P=0.0166). Functionally, the MICA-129Met isoform was characterized by stronger NKG2D signaling, triggering more NK-cell cytotoxicity and interferon- release, and faster co-stimulation of CD8(+) T cells. The MICA-129Met variant also induced a faster and stronger down-regulation of NKG2D on NK and CD8(+) T cells than the MICA-129Val isoform. The reduced cell surface expression of NKG2D in response to engagement by MICA-129Met variants appeared to reduce the severity of aGVHD.
- Issue Date
- 2015
- Journal
- EMBO Molecular Medicine
- Project
- SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz
SFB 1002 | C05: Bedeutung von zellulären Immunreaktionen für das kardiale Remodeling und die Therapie der Herzinsuffizienz durch Stammzelltransplantation - Working Group
- RG Dressel
- ISSN
- 1757-4684; 1757-4676
- Sponsor
- Open-Access Publikationsfonds 2015