Quantity of HLA-C surface expression and licensing of KIR2DL+ natural killer cells

Charoudeh, H. N. and Schmied, L. and Gonzalez, A. and Terszowski, G. and Czaja, K. and Schmitter, K. and Infanti, L. and Buser, A. and Stern, M.. (2012) Quantity of HLA-C surface expression and licensing of KIR2DL+ natural killer cells. Immunogenetics, Vol. 64, H. 10. pp. 739-745.

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Official URL: http://edoc.unibas.ch/dok/A6338092

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Natural killer (NK) cells require interaction of inhibitory surface receptors with human leukocyte antigen (HLA) ligands during development to acquire functional competence in a process termed "licensing." The quantity of HLA required for this process is unknown. Two polymorphisms affecting HLA-C surface expression (rs9264942 and rs67384697) have recently been identified, and shown to influence progression of HIV infection. We typed a cohort of healthy donors for the two HLA-C-related polymorphisms, KIR2DL1 and KIR2DL3, and their respective HLA-C ligands and analyzed how HLA ligands influenced licensing status of killer cell immunoglobulin-like receptor (KIR)+ NK cells in terms of degranulation and cytokine production in response to HLA-deficient target cells. The presence of respective HLA class I ligands increased the function of KIR2DL1+ and KIR2DL3+ NK cells in a dose-dependent manner. In contrast, neither of the HLA-C-related polymorphisms nor the quantity of cell surface HLA-C had any significant effect on NK cell function. Interestingly, HLA-Cw7-an HLA-C allele with low surface expression-licensed KIR2DL3+ NK cells more strongly than any other KIR2DL3 ligand. The quantity of cell surface HLA-C does not appear to influence licensing of NK cells, and the HLA-C-related polymorphisms presumably influence HIV progression through factors unrelated to NK cell education.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Former Units at DBM > Immunotherapy (Stern)
UniBasel Contributors:Stern, Martin Andreas
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Apr 2015 09:13
Deposited On:10 Apr 2015 09:13

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