MICA-129 polymorphism affects the binding affinity of MICA molecules with the NKG2D receptor and influences effector cell function. The genotype met/met was associated with the severity of left ventricular systolic dysfunction (LVSD) in patients with chronic Chagas heart disease, while the val/val genotype was associated with the absence of LVSD.
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http://dx.doi.org/10.1093/cid/civ540 | DOI Listing |
Eur J Haematol
July 2024
Anthony Nolan Research Institute, Royal Free Hospital, London, UK.
Objectives: NKG2D is an activating receptor expressed by natural killer (NK) and CD8+ T cells and activation intensity varies by NKG2D expression level or nature of its ligand. An NKG2D gene polymorphism determines high (HNK1) or low (LNK1) expression. MICA is the most polymorphic NKG2D ligand and stronger effector cell activation associates with methionine rather than valine at residue 129.
View Article and Find Full Text PDFAsian Pac J Cancer Prev
September 2023
Cholangiocarcinoma Research Institute, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
Objective: Chronic Opisthorchis viverrini (OV) infection is the cause of advanced periductal fibrosis (APF), subsequently leading to cholangiocarcinoma (CCA). Natural killer (NK) cells can kill hepatic stellate cells (HSCs), the initiating cells for fibrosis formation, by using the interaction between the natural killer group 2 member D (NKG2D) receptor and its ligand on the HSCs. This can inhibit the fibrosis formation.
View Article and Find Full Text PDFFront Immunol
December 2021
Immunogenetics Laboratory, Molecular Biology Department, Medicine School in São José do Rio Preto, São José do Rio Preto, Brazil.
Tissue damage observed in the clinical forms of chronic symptomatic Chagas disease seems to have a close relationship with the intensity of the inflammatory process. The objective of this study was to investigate whether the () and () polymorphisms are associated with the cardiac and digestive clinical forms of chronic Chagas disease. Possible influence of these genes polymorphisms on the left ventricular systolic dysfunction (LVSD) in patients with chronic Chagas heart disease was also evaluated.
View Article and Find Full Text PDFFront Immunol
September 2021
Immunology Program, Faculty of Medicine, Institute of Biomedical Sciences (ICBM), University of Chile, Santiago, Chile.
Gastric cancer (GC) is the fifth most prevalent type of cancer worldwide. Gastric tumor cells express MICA protein, a ligand to NKG2D receptor that triggers natural killer (NK) cells effector functions for early tumor elimination. gene is highly polymorphic, thus originating alleles that encode protein variants with a controversial role in cancer.
View Article and Find Full Text PDFJ Cancer Res Clin Oncol
March 2021
Faculty of Health Sciences, Kanazawa University, Kodatsuno 5-11-80, Kanazawa, 920-0942, Japan.
Background: Nasopharyngeal carcinoma (NPC) is a rare epithelial carcinoma arising from the nasopharyngeal region. The pathogenesis of NPC is linked to Epstein-Barr virus (EBV) infection, although genetics and lifestyle factors appears to be also implicated. NKG2D is an immunoreceptor expressed by NK and T-cell subsets that recognizes MICA protein and other ligands on tumor cells.
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