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Wang CM, Tan KP, Wu YJJ, Zheng JW, Wu J, Chen JY. Functional MICA Variants Are Differentially Associated with Immune-Mediated Inflammatory Diseases. Int J Mol Sci 2024; 25:3036. [PMID: 38474281 PMCID: PMC10931785 DOI: 10.3390/ijms25053036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/25/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
As the principal ligand for NKG2D, MICA elicits the recruitment of subsets of T cells and NK cells in innate immunity. MICA gene variants greatly impact the functionality and expression of MICA in humans. The current study evaluated whether MICA polymorphisms distinctively influence the pathogenesis of psoriasis (PSO), rheumatoid arthritis (RA), and systemic lupus erythematosus (SLE) in Taiwanese subjects. The distributions of MICA alleles and levels of serum soluble NKG2D were compared between healthy controls and patients with PSO, RA, and SLE, respectively. The binding capacities and cell surface densities of MICA alleles were assessed by utilizing stable cell lines expressing four prominent Taiwanese MICA alleles. Our data revealed that MICA*010 was significantly associated with risks for PSO and RA (PFDR = 1.93 × 10-15 and 0.00112, respectively), while MICA*045 was significantly associated with predisposition to SLE (PFDR = 0.0002). On the other hand, MICA*002 was associated with protection against RA development (PFDR = 4.16 × 10-6), while MICA*009 was associated with a low risk for PSO (PFDR = 0.0058). MICA*002 exhibited the highest binding affinity for NKG2D compared to the other MICA alleles. Serum concentrations of soluble MICA were significantly elevated in SLE patients compared to healthy controls (p = 0.01). The lack of cell surface expression of the MICA*010 was caused by its entrapment in the endoplasmic reticulum. As a prevalent risk factor for PSO and RA, MICA*010 is deficient in cell surface expression and is unable to interact with NKG2D. Our study suggests that MICA alleles distinctively contribute to the pathogenesis of PSO, RA, and SLE in Taiwanese people.
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Affiliation(s)
- Chin-Man Wang
- Department of Rehabilitation, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan;
| | - Keng-Poo Tan
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-P.T.); (Y.-J.J.W.); (J.-W.Z.)
| | - Yeong-Jian Jan Wu
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-P.T.); (Y.-J.J.W.); (J.-W.Z.)
| | - Jian-Wen Zheng
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-P.T.); (Y.-J.J.W.); (J.-W.Z.)
| | - Jianming Wu
- Department of Veterinary and Biomedical Sciences, Department of Medicine, University of Minnesota, St. Paul, MN 55108, USA
| | - Ji-Yih Chen
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33305, Taiwan; (K.-P.T.); (Y.-J.J.W.); (J.-W.Z.)
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Petersdorf EW, McKallor C, Malkki M, He M, Spellman SR, Hsu KC, Strong RK, Gooley T, Stevenson P. Role of NKG2D ligands and receptor in haploidentical related donor hematopoietic cell transplantation. Blood Adv 2023; 7:2888-2896. [PMID: 36763517 PMCID: PMC10300293 DOI: 10.1182/bloodadvances.2022008922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/10/2022] [Accepted: 12/06/2022] [Indexed: 02/11/2023] Open
Abstract
The recurrence of malignancy after hematopoietic cell transplantation (HCT) is the primary cause of transplantation failure. The NKG2D axis is a powerful pathway for antitumor responses, but its role in the control of malignancy after HCT is not well-defined. We tested the hypothesis that gene variation of the NKG2D receptor and its ligands MICA and MICB affect relapse and survival in 1629 patients who received a haploidentical HCT for the treatment of a malignant blood disorder. Patients and donors were characterized for MICA residue 129, the exon 5 short tandem repeat (STR), and MICB residues 52, 57, 98, and 189. Donors were additionally defined for the presence of NKG2D residue 72. Mortality was higher in patients with MICB-52Asn relative to those with 52Asp (hazard ratio [HR], 1.83; 95% confidence interval [CI], 1.24-2.71; P = .002) and lower in those with MICA-STR mismatch than in those with STR match (HR, 0.66; 95% CI, 0.54-0.79; P = .00002). Relapse was lower with NKG2D-72Thr donors than with 72Ala donors (relapse HR, 0.57; 95% CI, 0.35-0.91; P = .02). The protective effects of patient MICB-52Asp with donor MICA-STR mismatch and NKG2D-72Thr were enhanced when all 3 features were present. The NKG2D ligand/receptor pathway is a transplantation determinant. The immunobiology of relapse is defined by the concerted effects of MICA, MICB, and NKG2D germ line variation. Consideration of NKG2D ligand/receptor pairings may improve survival for future patients.
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Affiliation(s)
- Effie W. Petersdorf
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, WA
- Department of Medicine, University of Washington, Seattle, WA
| | - Caroline McKallor
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, WA
| | - Mari Malkki
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, WA
| | - Meilun He
- National Marrow Donor Program/BeTheMatch, Center for International Blood and Marrow Transplant Research, Minneapolis, MN
| | - Stephen R. Spellman
- National Marrow Donor Program/BeTheMatch, Center for International Blood and Marrow Transplant Research, Minneapolis, MN
| | - Katharine C. Hsu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Roland K. Strong
- Division of Basic Sciences, Fred Hutchinson Cancer Center, Seattle, WA
| | - Ted Gooley
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, WA
| | - Phil Stevenson
- Division of Clinical Research, Fred Hutchinson Cancer Center, Seattle, WA
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Wang S, Onyeaghala GC, Pankratz N, Nelson HH, Thyagarajan B, Tang W, Norby FL, Ugoji C, Joshu CE, Gomez CR, Couper DJ, Coresh J, Platz EA, Prizment AE. Associations between MICA and MICB Genetic Variants, Protein Levels, and Colorectal Cancer: Atherosclerosis Risk in Communities (ARIC). Cancer Epidemiol Biomarkers Prev 2023; 32:784-794. [PMID: 36958849 PMCID: PMC10239349 DOI: 10.1158/1055-9965.epi-22-1113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/24/2023] [Accepted: 03/20/2023] [Indexed: 03/25/2023] Open
Abstract
BACKGROUND The MHC class I chain-related protein A (MICA) and protein B (MICB) participate in tumor immunosurveillance and may be important in colorectal cancer, but have not been examined in colorectal cancer development. METHODS sMICA and sMICB blood levels were measured by SomaScan in Visit 2 (1990-92, baseline) and Visit 3 (1993-95) samples in cancer-free participants in the Atherosclerosis Risk in Communities Study. We selected rs1051792, rs1063635, rs2516448, rs3763288, rs1131896, rs2596542, and rs2395029 that were located in or in the vicinity of MICA or MICB and were associated with cancer or autoimmune diseases in published studies. SNPs were genotyped by the Affymetrix Genome-Wide Human SNP Array. We applied linear and Cox proportional hazards regressions to examine the associations of preselected SNPs with sMICA and sMICB levels and colorectal cancer risk (236 colorectal cancers, 8,609 participants) and of sMICA and sMICB levels with colorectal cancer risk (312 colorectal cancers, 10,834 participants). In genetic analyses, estimates adjusted for ancestry markers were meta-analyzed. RESULTS Rs1051792-A, rs1063635-A, rs2516448-C, rs3763288-A, rs2596542-T, and rs2395029-G were significantly associated with decreased sMICA levels. Rs2395029-G, in the vicinity of MICA and MICB, was also associated with increased sMICB levels. Rs2596542-T was significantly associated with decreased colorectal cancer risk. Lower sMICA levels were associated with lower colorectal cancer risk in males (HR = 0.68; 95% confidence interval, 0.49-0.96) but not in females (Pinteraction = 0.08). CONCLUSIONS Rs2596542-T associated with lower sMICA levels was associated with decreased colorectal cancer risk. Lower sMICA levels were associated with lower colorectal cancer risk in males. IMPACT These findings support an importance of immunosurveillance in colorectal cancer.
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Affiliation(s)
- Shuo Wang
- Division of Hematology, Oncology and Transplantation, Medical School, University of Minnesota, Minneapolis, MN
| | - Guillaume C. Onyeaghala
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Nathan Pankratz
- Department of Laboratory Medicine and Pathology, Medical School, University of Minnesota, Minneapolis, MN
| | - Heather H Nelson
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, Medical School, University of Minnesota, Minneapolis, MN
| | - Weihong Tang
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Faye L. Norby
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
| | - Chinenye Ugoji
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Corinne E. Joshu
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Christian R. Gomez
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS
| | - David J. Couper
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Elizabeth A. Platz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Anna E. Prizment
- Division of Hematology, Oncology and Transplantation, Medical School, University of Minnesota, Minneapolis, MN
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Charreau B. Cellular and Molecular Crosstalk of Graft Endothelial Cells During AMR: Effector Functions and Mechanisms. Transplantation 2021; 105:e156-e167. [PMID: 33724240 DOI: 10.1097/tp.0000000000003741] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Graft endothelial cell (EC) injury is central to the pathogenesis of antibody-mediated rejection (AMR). The ability of donor-specific antibodies (DSA) to bind C1q and activate the classical complement pathway is an efficient predictor of graft rejection highlighting complement-dependent cytotoxicity as a key process operating during AMR. In the past 5 y, clinical studies further established the cellular and molecular signatures of AMR revealing the key contribution of other, IgG-dependent and -independent, effector mechanisms mediated by infiltrating NK cells and macrophages. Beyond binding to alloantigens, DSA IgG can activate NK cells and mediate antibody-dependent cell cytotoxicity through interacting with Fcγ receptors (FcγRs) such as FcγRIIIa (CD16a). FcRn, a nonconventional FcγR that allows IgG recycling, is highly expressed on ECs and may contribute to the long-term persistence of DSA in blood. Activation of NK cells and macrophages results in the production of proinflammatory cytokines such as TNF and IFNγ that induce transient and reversible changes in the EC phenotype and functions promoting coagulation, inflammation, vascular permeability, leukocyte trafficking. MHC class I mismatch between transplant donor and recipient can create a situation of "missing self" allowing NK cells to kill graft ECs. Depending on the microenvironment, cellular proximity with ECs may participate in macrophage polarization toward an M1 proinflammatory or an M2 phenotype favoring inflammation or vascular repair. Monocytes/macrophages participate in the loss of endothelial specificity in the process of endothelial-to-mesenchymal transition involved in renal and cardiac fibrosis and AMR and may differentiate into ECs enabling vessel and graft (re)-endothelialization.
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Affiliation(s)
- Béatrice Charreau
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et en Immunologie, UMR 1064, ITUN, Nantes, France
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Machuldova A, Houdova L, Kratochvilova K, Leba M, Jindra P, Ostasov P, Maceckova D, Klieber R, Gmucova H, Sramek J, Holubova M. Single-Nucleotide Polymorphisms in MICA and MICB Genes Could Play a Role in the Outcome in AML Patients after HSCT. J Clin Med 2021; 10:jcm10204636. [PMID: 34682758 PMCID: PMC8537017 DOI: 10.3390/jcm10204636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/27/2021] [Accepted: 10/06/2021] [Indexed: 11/18/2022] Open
Abstract
NKG2D and its ligands, MICA and MICB, are known as the key regulators of NK cells. NK cells are the first reconstituted cells after the allogeneic hematopoietic stem cell transplantation (HSCT); therefore, it is crucial to understand their role in HSCT outcome. In the presented study, we investigated the single amino acid changes across the exons 2–4 of MICA and MICB genes, and point mutations within the NKG2D gene, which defines the type of NKG2D haploblock (HNK/LNK) in the donors (n = 124), as well as in patients with acute myeloid leukemia (n = 78). In our cohort, we found that graft from a donor with at least one MICA allele containing glycine at position 14 (MICA-14Gly) is significantly associated with deterioration of a patient’s overall survival (OS) (p < 0.05). We also observed a negative effect of MICB-58 (Lys → Glu) polymorphism on relapse-free survival (RFS), although it was not statistically significant in multivariate analysis (p = 0.069). To our knowledge, this is the first work describing the role of MICA-14 and MICB-58 polymorphisms on HSCT outcome.
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Affiliation(s)
- Alena Machuldova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 323 00 Pilsen, Czech Republic; (P.O.); (D.M.); (R.K.)
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, 301 66 Pilsen, Czech Republic;
- Correspondence: (A.M.); (M.H.)
| | - Lucie Houdova
- NTIS, Faculty of Applied Sciences, University of West Bohemia, 301 00 Pilsen, Czech Republic; (L.H.); (K.K.); (M.L.)
| | - Katerina Kratochvilova
- NTIS, Faculty of Applied Sciences, University of West Bohemia, 301 00 Pilsen, Czech Republic; (L.H.); (K.K.); (M.L.)
| | - Martin Leba
- NTIS, Faculty of Applied Sciences, University of West Bohemia, 301 00 Pilsen, Czech Republic; (L.H.); (K.K.); (M.L.)
| | - Pavel Jindra
- Department of Haematology and Oncology, University Hospital Pilsen, 304 60 Pilsen, Czech Republic; (P.J.); (H.G.)
| | - Pavel Ostasov
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 323 00 Pilsen, Czech Republic; (P.O.); (D.M.); (R.K.)
| | - Diana Maceckova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 323 00 Pilsen, Czech Republic; (P.O.); (D.M.); (R.K.)
| | - Robin Klieber
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 323 00 Pilsen, Czech Republic; (P.O.); (D.M.); (R.K.)
| | - Hana Gmucova
- Department of Haematology and Oncology, University Hospital Pilsen, 304 60 Pilsen, Czech Republic; (P.J.); (H.G.)
| | - Jiri Sramek
- Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, 301 66 Pilsen, Czech Republic;
- Department of Haematology and Oncology, University Hospital Pilsen, 304 60 Pilsen, Czech Republic; (P.J.); (H.G.)
| | - Monika Holubova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 323 00 Pilsen, Czech Republic; (P.O.); (D.M.); (R.K.)
- Department of Haematology and Oncology, University Hospital Pilsen, 304 60 Pilsen, Czech Republic; (P.J.); (H.G.)
- Correspondence: (A.M.); (M.H.)
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Alves E, McLeish E, Blancafort P, Coudert JD, Gaudieri S. Manipulating the NKG2D Receptor-Ligand Axis Using CRISPR: Novel Technologies for Improved Host Immunity. Front Immunol 2021; 12:712722. [PMID: 34456921 PMCID: PMC8397441 DOI: 10.3389/fimmu.2021.712722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/28/2021] [Indexed: 12/26/2022] Open
Abstract
The activating immune receptor natural killer group member D (NKG2D) and its cognate ligands represent a fundamental surveillance system of cellular distress, damage or transformation. Signaling through the NKG2D receptor-ligand axis is critical for early detection of viral infection or oncogenic transformation and the presence of functional NKG2D ligands (NKG2D-L) is associated with tumor rejection and viral clearance. Many viruses and tumors have developed mechanisms to evade NKG2D recognition via transcriptional, post-transcriptional or post-translational interference with NKG2D-L, supporting the concept that circumventing immune evasion of the NKG2D receptor-ligand axis may be an attractive therapeutic avenue for antiviral therapy or cancer immunotherapy. To date, the complexity of the NKG2D receptor-ligand axis and the lack of specificity of current NKG2D-targeting therapies has not allowed for the precise manipulation required to optimally harness NKG2D-mediated immunity. However, with the discovery of clustered regularly interspaced short palindromic repeats (CRISPRs) and CRISPR-associated (Cas) proteins, novel opportunities have arisen in the realm of locus-specific gene editing and regulation. Here, we give a brief overview of the NKG2D receptor-ligand axis in humans and discuss the levels at which NKG2D-L are regulated and dysregulated during viral infection and oncogenesis. Moreover, we explore the potential for CRISPR-based technologies to provide novel therapeutic avenues to improve and maximize NKG2D-mediated immunity.
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Affiliation(s)
- Eric Alves
- School of Human Sciences, The University of Western Australia, Perth, WA, Australia
- Cancer Epigenetics Laboratory, The Harry Perkins Institute of Medical Research, Perth, WA, Australia
| | - Emily McLeish
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, WA, Australia
| | - Pilar Blancafort
- School of Human Sciences, The University of Western Australia, Perth, WA, Australia
- Cancer Epigenetics Laboratory, The Harry Perkins Institute of Medical Research, Perth, WA, Australia
- The Greehey Children’s Cancer Research Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Jerome D. Coudert
- Centre for Molecular Medicine and Innovative Therapeutics, Murdoch University, Perth, WA, Australia
- Perron Institute for Neurological and Translational Science, Perth, WA, Australia
- School of Medicine, University of Notre Dame, Fremantle, WA, Australia
| | - Silvana Gaudieri
- School of Human Sciences, The University of Western Australia, Perth, WA, Australia
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, WA, Australia
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
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Wang CM, Tan KP, Jan Wu YJ, Lin JC, Zheng JW, Yu AL, Wu JM, Chen JY. MICA*019 Allele and Soluble MICA as Biomarkers for Ankylosing Spondylitis in Taiwanese. J Pers Med 2021; 11:jpm11060564. [PMID: 34208618 PMCID: PMC8235541 DOI: 10.3390/jpm11060564] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 12/23/2022] Open
Abstract
MICA (major histocompatibility complex class I chain-related gene A) interacts with NKG2D on immune cells to regulate host immune responses. We aimed to determine whether MICA alleles are associated with AS susceptibility in Taiwanese. MICA alleles were determined through haplotype analyses of major MICA coding SNP (cSNP) data from 895 AS patients and 896 normal healthy controls in Taiwan. The distributions of MICA alleles were compared between AS patients and normal healthy controls and among AS patients, stratified by clinical characteristics. ELISA was used to determine soluble MICA (sMICA) levels in serum of AS patients and healthy controls. Stable cell lines expressing four major MICA alleles (MICA*002, MICA*008, MICA*010 and MICA*019) in Taiwanese were used for biological analyses. We found that MICA*019 is the only major MICA allele significantly associated with AS susceptibility (PFDR = 2.25 × 10−115; OR, 14.90; 95% CI, 11.83–18.77) in Taiwanese. In addition, the MICA*019 allele is associated with syndesmophyte formation (PFDR = 0.0017; OR, 1.69; 95% CI, 1.29–2.22) and HLA-B27 positivity (PFDR = 1.45 × 10−33; OR, 28.79; 95% CI, 16.83–49.26) in AS patients. Serum sMICA levels were significantly increased in AS patients as compared to healthy controls. Additionally, MICA*019 homozygous subjects produced the highest levels of sMICA, compared to donors with other genotypes. Furthermore, in vitro experiments revealed that cells expressing MICA*019 produced the highest level of sMICA, as compared to other major MICA alleles. In summary, the MICA*019 allele, producing the highest levels of sMICA, is a significant risk factor for AS and syndesmophyte formation in Taiwanese. Our data indicate that a high level of sMICA is a biomarker for AS.
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Affiliation(s)
- Chin-Man Wang
- Department of Rehabilitation, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan;
| | - Keng-Poo Tan
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan; (K.-P.T.); (Y-.J.J.W.); (J.-C.L.); (J.-W.Z.)
| | - Yeong-Jian Jan Wu
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan; (K.-P.T.); (Y-.J.J.W.); (J.-C.L.); (J.-W.Z.)
| | - Jing-Chi Lin
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan; (K.-P.T.); (Y-.J.J.W.); (J.-C.L.); (J.-W.Z.)
| | - Jian-Wen Zheng
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan; (K.-P.T.); (Y-.J.J.W.); (J.-C.L.); (J.-W.Z.)
| | - Alice L. Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Taoyuan 33375, Taiwan;
- Department of Pediatrics, University of California, San Diego, CA 92103, USA
| | - Jian-Ming Wu
- Department of Veterinary and Biomedical Sciences, Department of Medicine, University of Minnesota, Minneapolis, MN 55108, USA;
| | - Ji-Yih Chen
- Department of Medicine, Division of Allergy, Immunology and Rheumatology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 33302, Taiwan; (K.-P.T.); (Y-.J.J.W.); (J.-C.L.); (J.-W.Z.)
- Correspondence: ; Tel.: +886-3-328-1200 (ext. 2410); Fax: 886-3-3288-287
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8
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Machuldova A, Holubova M, Caputo VS, Cedikova M, Jindra P, Houdova L, Pitule P. Role of Polymorphisms of NKG2D Receptor and Its Ligands in Acute Myeloid Leukemia and Human Stem Cell Transplantation. Front Immunol 2021; 12:651751. [PMID: 33868289 PMCID: PMC8044845 DOI: 10.3389/fimmu.2021.651751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/15/2021] [Indexed: 01/17/2023] Open
Abstract
Natural killer cells possess key regulatory function in various malignant diseases, including acute myeloid leukemia. NK cell activity is driven by signals received through ligands binding activating or inhibitory receptors. Their activity towards elimination of transformed or virally infected cells can be mediated through MICA, MICB and ULBP ligands binding the activating receptor NKG2D. Given the efficiency of NK cells, potential target cells developed multiple protecting mechanisms to overcome NK cells killing on various levels of biogenesis of NKG2D ligands. Targeted cells can degrade ligand transcripts via microRNAs or modify them at protein level to prevent their presence at cell surface via shedding, with added benefit of shed ligands to desensitize NKG2D receptor and avert the threat of destruction via NK cells. NK cells and their activity are also indispensable during hematopoietic stem cell transplantation, crucial treatment option for patients with malignant disease, including acute myeloid leukemia. Function of both NKG2D and its ligands is strongly affected by polymorphisms and particular allelic variants, as different alleles can play variable roles in ligand-receptor interaction, influencing NK cell function and HSCT outcome differently. For example, role of amino acid exchange at position 129 in MICA or at position 98 in MICB, as well as the role of other polymorphisms leading to different shedding of ligands, was described. Finally, match or mismatch between patient and donor in NKG2D ligands affect HSCT outcome. Having the information beyond standard HLA typing prior HSCT could be instrumental to find the best donor for the patient and to optimize effects of treatment by more precise patient-donor match. Here, we review recent research on the NKG2D/NKG2D ligand biology, their regulation, description of their polymorphisms across the populations of patients with AML and the influence of particular polymorphisms on HSCT outcome.
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Affiliation(s)
- Alena Machuldova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia
| | - Monika Holubova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia.,Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Valentina S Caputo
- Hugh & Josseline Langmuir Center for Myeloma Research, Center for Hematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom.,Cancer Biology and Therapy Laboratory, School of Applied Sciences, London South Bank University, London, United Kingdom
| | - Miroslava Cedikova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia
| | - Pavel Jindra
- Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Lucie Houdova
- NTIS, Faculty of Applied Sciences, University of West Bohemia, Pilsen, Czechia
| | - Pavel Pitule
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia.,Department of Histology and Embryology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia
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Viet NH, Trung NQ, Dong LT, Trung LQ, Espinoza JL. Genetic variants in NKG2D axis and susceptibility to Epstein-Barr virus-induced nasopharyngeal carcinoma. J Cancer Res Clin Oncol 2021; 147:713-723. [PMID: 33392659 DOI: 10.1007/s00432-020-03475-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/18/2020] [Indexed: 12/31/2022]
Abstract
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. NKG2D interaction with MICA plays a role in the immunosurveillance to viruses and cancer. METHODS We investigated potential associations between functional polymorphisms in NKG2D and MICA genes with NPC susceptibility. We conducted a case-control study including 255 Vietnamese patients with EBV + non-differentiated NPC and 220 healthy controls. RESULTS We observed a significant association between the LNK/LNK genotype of rs1049174 (a variant associated with lower NKG2D receptor expression and reduced NK cell cytotoxicity) and increased susceptibility to NPC (adjusted OR = 1.66, 95% CI 1.07-2.59; p = 0.024). Similarly, the AA genotype of MICA rs2596542 was significantly associated with NPC (adjusted OR = 2.12; 95% CI 1.22-3.81; p = 0.009). In addition, tumor specimens of NPC patients with the AA genotype displayed a higher expression level of MICA proteins and showed higher EBV titers compared with tumor tissues from patients with the GG or GA genotypes. Higher EBV copy numbers were also observed in tumors with the A allele of MICA rs1051792 (also known as MICA-129 Met/Val) compared with those with the G allele; however, MICA rs1051792 variants were not associated with NPC susceptibility. These results suggest that genetic variants in components of the NKG2D axis may influence the individual susceptibility to EBV-induced NPC.
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Affiliation(s)
- Nguyen Hoang Viet
- Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam.,Center for Gene-Protein Research, Hanoi Medical University, Hanoi, Vietnam
| | - Nguyen Quang Trung
- Department of Otorhinolaryngology, Hanoi Medical University, Hanoi, Vietnam
| | - Le Thanh Dong
- Faculty of Medical Technology, Hanoi Medical University, Hanoi, Vietnam
| | - Ly Quoc Trung
- Faculty of Medicine and Pharmacy, Soc Trang Community College, Soc Trang, Vietnam
| | - J Luis Espinoza
- Faculty of Health Sciences, Kanazawa University, Kodatsuno 5-11-80, Kanazawa, 920-0942, Japan.
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10
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Ivanova M, Shivarov V. HLA genotyping meets response to immune checkpoint inhibitors prediction: A story just started. Int J Immunogenet 2020; 48:193-200. [PMID: 33112034 DOI: 10.1111/iji.12517] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/06/2020] [Accepted: 10/13/2020] [Indexed: 12/27/2022]
Abstract
The implementation of the immune checkpoint blockade as a therapeutic option in contemporary oncology is one of the significant immunological achievements in the last century. Constantly accumulating evidence suggests that the response to immune checkpoint inhibitors (ICIs) is not universal. Therefore, it is critical to identify determinants for response, resistance and adverse effects of immune checkpoint therapy that could be developed as prognostic and predictive markers. Recent large scale analyses of cancer genome data revealed the key role of HLA class I and class II molecules in cancer immunoediting, and it appears that HLA diversity can predict response to ICIs. In the present review, we summarize the emerging data on the role of HLA germline variations as a marker for response to ICIs.
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Affiliation(s)
- Milena Ivanova
- Department of Clinical Immunology, University Hospital Alexandrovska, Medical University Sofia, Sofia, Bulgaria
| | - Velizar Shivarov
- Department of Genetics, St. Kliment Ohridski University, Sofia, Bulgaria
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11
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Partanen J, Hyvärinen K, Bickeböller H, Bogunia-Kubik K, Crossland RE, Ivanova M, Perutelli F, Dressel R. Review of Genetic Variation as a Predictive Biomarker for Chronic Graft-Versus-Host-Disease After Allogeneic Stem Cell Transplantation. Front Immunol 2020; 11:575492. [PMID: 33193367 PMCID: PMC7604383 DOI: 10.3389/fimmu.2020.575492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022] Open
Abstract
Chronic graft-versus-host disease (cGvHD) is one of the major complications of allogeneic stem cell transplantation (HSCT). cGvHD is an autoimmune-like disorder affecting multiple organs and involves a dermatological rash, tissue inflammation and fibrosis. The incidence of cGvHD has been reported to be as high as 30% to 60% and there are currently no reliable tools for predicting the occurrence of cGvHD. There is therefore an important unmet clinical need for predictive biomarkers. The present review summarizes the state of the art for genetic variation as a predictive biomarker for cGvHD. We discuss three different modes of action for genetic variation in transplantation: genetic associations, genetic matching, and pharmacogenetics. The results indicate that currently, there are no genetic polymorphisms or genetic tools that can be reliably used as validated biomarkers for predicting cGvHD. A number of recommendations for future studies can be drawn. The majority of studies to date have been under-powered and included too few patients and genetic markers. Like in all complex multifactorial diseases, large collaborative genome-level studies are now needed to achieve reliable and unbiased results. Some of the candidate genes, in particular, CTLA4, HSPE, IL1R1, CCR6, FGFR1OP, and IL10, and some non-HLA variants in the HLA gene region have been replicated to be associated with cGvHD risk in independent studies. These associations should now be confirmed in large well-characterized cohorts with fine mapping. Some patients develop cGvHD despite very extensive immunosuppression and other treatments, indicating that the current therapeutic regimens may not always be effective enough. Hence, more studies on pharmacogenetics are also required. Moreover, all of these studies should be adjusted for diagnostic and clinical features of cGvHD. We conclude that future studies should focus on modern genome-level tools, such as machine learning, polygenic risk scores and genome-wide association study-transcription meta-analyses, instead of focusing on just single variants. The risk of cGvHD may be related to the summary level of immunogenetic differences, or whole genome histocompatibility between each donor-recipient pair. As the number of genome-wide analyses in HSCT is increasing, we are approaching an era where there will be sufficient data to incorporate these approaches in the near future.
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Affiliation(s)
- Jukka Partanen
- Finnish Red Cross Blood Service, Research and Development, Helsinki, Finland
| | - Kati Hyvärinen
- Finnish Red Cross Blood Service, Research and Development, Helsinki, Finland
| | - Heike Bickeböller
- Department of Genetic Epidemiology, University Medical Center Göttingen, Göttingen, Germany
| | - Katarzyna Bogunia-Kubik
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Rachel E Crossland
- Haematological Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Milena Ivanova
- Medical University, University Hospital Alexandrovska, Sofia, Bulgaria
| | - Francesca Perutelli
- Haematological Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.,Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Ralf Dressel
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany
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12
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Gong X, Chen P, Ma P, Gao J, Yang J, Guo H, Yan C, Zhang B, He Y. MICA polymorphisms associated with antithyroid drug-induced agranulocytosis in the Chinese Han population. IMMUNITY INFLAMMATION AND DISEASE 2020; 8:695-703. [PMID: 33017098 PMCID: PMC7654430 DOI: 10.1002/iid3.359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/17/2020] [Indexed: 12/19/2022]
Abstract
Background Graves' disease (GD) is a clinical autoimmune thyroid disease. During the treatment of GD, antithyroid drug‐induced agranulocytosis (TIA) is a common and even life‐threatening adverse drug reaction. Previous studies suggested that susceptibility to TIA is strongly associated with HLA‐B*27:05, HLA‐B*38:02, and HLA‐DRB1*08:03 genetic variation and six single nucleotide polymorphisms (SNPs) in MICA genes. Aims The purpose of this study is to further study the associations between TIA, HLA‐B and MICA. Materials & Methods We genotyped MICA‐STR and MICA‐129 variants in 41 TIA and 308 control patients with GD and investigated the linkage effect among SNPs and short tandem repeat (STR) of MICA and HLA‐B alleles. Results The results showed that MICA*A5.1 was significantly associated with TIA (p = .007, odd ratio = 1.958, 95% confidence interval, 1.192–3.214). In addition, high linkage among MICA‐129 and six SNPs MICA and HLA‐B was detected, and two haplotypes (AAAACAAAAACGGCCTA and AACAAAAAAAACATTAA (p = 5.14E−07 and p = 3.42E−08, respectively)) were significantly associated with TIA. Furthermore, when we analyzed only MICA‐129 and HLA‐B separately, the haplotypes (AAAACAAAAAA with p = 2.49E−07 and AACAAAAAAAA with p = 2.14E−09) were identified with more significant effects. MICA‐129 was completely linked to six SNPs with haplotypes ACATTACA (p = 2.05E−05) significantly associated with TIA. Conclusion These data indicated that there was a significant linkage effect between MICA‐129 and other alleles, suggesting that they exert interactive effects as risk factors for the development of TIA.
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Affiliation(s)
- Xiaojuan Gong
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Pu Chen
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Pan Ma
- College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Jiayang Gao
- College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Jingsi Yang
- College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Hui Guo
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chunxia Yan
- College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Bao Zhang
- College of Medicine and Forensic, Health Science Center of Xi'an Jiao Tong University, Xi'an, Shaanxi, China
| | - Yayi He
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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13
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Plasil M, Wijkmark S, Elbers JP, Oppelt J, Burger PA, Horin P. The major histocompatibility complex of Old World camelids: Class I and class I-related genes. HLA 2020; 93:203-215. [PMID: 30828986 DOI: 10.1111/tan.13510] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/14/2019] [Accepted: 02/27/2019] [Indexed: 12/30/2022]
Abstract
The genomic structure of the Major Histocompatibility Complex (MHC) region and variation in selected MHC class I related genes in Old World camels, Camelus bactrianus and Camelus dromedaries were studied. The overall genomic organization of the camel MHC region follows a general pattern observed in other mammalian species and individual MHC loci appear to be well conserved. Selected MHC class I genes B-67 and BL3-7 exhibited unexpectedly low variability, even when compared to other camel MHC class I related genes MR1 and MICA. Interspecific SNP and allele sharing are relatively common, and frequencies of heterozygotes are usually low. Such a low variation in a genomic region generally considered as one of the most polymorphic in vertebrate genomes is unusual. Evolutionary relationships between MHC class I related genes and their counterparts from other species seem to be rather complex. Often, they do not follow the general evolutionary history of the species concerned. Close evolutionary relationships of individual MHC class I loci between camels, humans and dogs were observed. Based on the results of this study and on our data on MHC class II genes, the extent and the pattern of polymorphism of the MHC region of Old World camelids differed from most mammalian groups studied so far. Camels thus seem to be an important model for our understanding of the role of genetic diversity in immune functions, especially in the context of unique features of their immunoglobulin and T-cell receptor genes.
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Affiliation(s)
- Martin Plasil
- Department of Animal Genetics, Veterinary and Pharmaceutical University, Brno, Czech Republic.,Ceitec VFU, RG Animal Immunogenomics, Brno, Czech Republic
| | - Sofia Wijkmark
- Department of Animal Genetics, Veterinary and Pharmaceutical University, Brno, Czech Republic
| | - Jean P Elbers
- Research Institute of Wildlife Ecology, Department of Integrative Biology and Evolution, Vienna, Austria
| | - Jan Oppelt
- Ceitec MU, Masaryk University, Brno, Czech Republic.,Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Brno, Czech Republic
| | - Pamela A Burger
- Research Institute of Wildlife Ecology, Department of Integrative Biology and Evolution, Vienna, Austria
| | - Petr Horin
- Department of Animal Genetics, Veterinary and Pharmaceutical University, Brno, Czech Republic.,Ceitec VFU, RG Animal Immunogenomics, Brno, Czech Republic
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14
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Zingoni A, Vulpis E, Loconte L, Santoni A. NKG2D Ligand Shedding in Response to Stress: Role of ADAM10. Front Immunol 2020; 11:447. [PMID: 32269567 PMCID: PMC7109295 DOI: 10.3389/fimmu.2020.00447] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/26/2020] [Indexed: 12/18/2022] Open
Abstract
NKG2D is an activating receptor expressed by NK cells and some subsets of T cells and represents a major recognition receptor for detection and elimination of cancer cells. The ligands of NKG2D are stress-induced self-proteins that can be secreted as soluble molecules by protease-mediated cleavage. The release of NKG2D ligands in the extracellular milieu is considered a mode of finely controlling their surface expression levels and represents a relevant immune evasion mechanism employed by cancer cells to elude NKG2D-mediated immune surveillance. A disintegrin and metalloproteinase 10 (ADAM10), a catalytically active member of the ADAM family of proteases, is involved in the cleavage of some NKG2D ligands in various types of cancer cells either in steady state conditions and in response to an ample variety of stress stimuli. Appealing immunotherapeutic strategies devoted to promoting NK cell-mediated recognition and elimination of cancer cells are based on the upregulation of NK cell activating ligands. In particular, activation of DNA damage response (DDR) and the induction of cellular senescence by chemotherapeutic agents are associated with increased expression of NKG2D ligands on cancer cell surface. Herein, we will review advances on the protease-mediated cleavage of NKG2D ligands in response to chemotherapy-induced stress focusing on: (i) the role played by ADAM10 in this process and (ii) the implications of NKG2D ligand shedding in the course of cancer therapy and in senescent cells.
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Affiliation(s)
- Alessandra Zingoni
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Elisabetta Vulpis
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Luisa Loconte
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Angela Santoni
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli, Italy
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15
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Iwaszko M, Świerkot J, Dratwa M, Wysoczańska B, Korman L, Bugaj B, Kolossa K, Jeka S, Wiland P, Bogunia-Kubik K. Association of MICA-129Met/Val polymorphism with clinical outcome of anti-TNF therapy and MICA serum levels in patients with rheumatoid arthritis. THE PHARMACOGENOMICS JOURNAL 2020; 20:760-769. [PMID: 32123296 PMCID: PMC7674153 DOI: 10.1038/s41397-020-0164-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 01/28/2020] [Accepted: 02/07/2020] [Indexed: 12/11/2022]
Abstract
MHC class I polypeptide-related sequence A (MICA) is a stress-induced protein involved in activation of NK and T cells through interaction with NKG2D receptor. These molecules are atypically expressed in synovium of patients diagnosed with rheumatoid arthritis (RA). A total of 279 patients with RA, qualified to TNF-blockade therapy, were genotyped for MICA rs1051792 SNP. The effectiveness of anti-TNF agents was assessed with European League Against Rheumatism criteria. Significant relationship between MICA rs1051792 and outcome of TNF-blockade therapy has been found. The MICA rs1051792 GG genotype was overrepresented in patients non-responsive to anti-TNF drugs in comparison with other genotypes (p = 0.010). On the other hand, beneficial therapeutic response was more frequently detected among RA subjects possessing heterozygous genotype than those with homozygous genotypes (p = 0.003). Furthermore, increased MICA concentrations in serum were observed in patients possessing MICA rs1051792 GG genotype as compared with those with GA or AA genotypes (p = 1.8 × 10-5). The results from this study indicate the potential influence of MICA rs1051792 polymorphism on modulation of therapeutic response to TNF-blockade treatment in RA.
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Affiliation(s)
- Milena Iwaszko
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland.
| | - Jerzy Świerkot
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Wrocław, Poland
| | - Marta Dratwa
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Barbara Wysoczańska
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Lucyna Korman
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Wrocław, Poland
| | - Bartosz Bugaj
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Wrocław, Poland
| | - Katarzyna Kolossa
- Jan Biziel University Hospital No. 2, Department of Rheumatology and Connective Tissue Diseases, Bydgoszcz, Collegium Medicum in Bydgoszcz, UMK, Torun, Poland
| | - Sławomir Jeka
- Jan Biziel University Hospital No. 2, Department of Rheumatology and Connective Tissue Diseases, Bydgoszcz, Collegium Medicum in Bydgoszcz, UMK, Torun, Poland
| | - Piotr Wiland
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Wrocław, Poland
| | - Katarzyna Bogunia-Kubik
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
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16
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Ben Chaaben A, Ouni N, Douik H, Ayari F, Abaza H, Mamoghli T, Harzallah L, Fortier C, Boukouaci W, Krishnamoorthy R, Charron D, Gara S, Guemira F, Tamouza R. Soluble MICA and anti-MICA Antibodies as Biomarkers of Nasopharyngeal Carcinoma Disease. Immunol Invest 2019; 49:498-509. [PMID: 31814472 DOI: 10.1080/08820139.2019.1690506] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The MHC class I chain-related molecule A (MICA) is a ligand for the activating natural killer (NK) cell receptor NKG2D. A part from its genetic diversity, MICA is characterized by the presence of membrane-bound and soluble isoform (sMICA) and by the propensity to elicit antibody-mediated allogeneicity (MICA Abs). Altogether such properties are important in the cancer setting. Here, we investigated whether MICA polymorphism, serum level of sMICA and MICA antibodies (Abs) may influence nasopharyngeal carcinoma (NPC) risk. 274 NPC naïve of treatment patients and 275 healthy individuals, all originating from Tunisia were included and genotyped. Among them, 160 sera from patients and 51 from controls were analyzed for the sMICA level by ELISA and were tested for the presence of MICA Abs by Luminex assay. The statistical analysis showed that: (1) we extend and confer our previous finding concerning Val/Val association with risk of NPC (p = .02, OR = 1.56; 95%CI [1.12-2.11]). (2) The higher level of sMICA characterized patients advanced stage of the disease. (3) The 18 (78%) of patients having MICA Abs exhibit all a non-advanced stage of the tumor extension at presentation. MICA129 Met /Val, sMICA and MICA Abs could be potential biomarkers of prediction, the diverse staging of NPC and hence prognostic and treatment.
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Affiliation(s)
- Arij Ben Chaaben
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia.,Immunology and Histocompatibility Department, CIH-HOG, AP-HP/GHU-Nord, IUH and INSERM, U940, Saint-Louis Hospital , Paris, France
| | - Nesrine Ouni
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia.,Faculty of Mathematics, Physics and Natural Sciences, University of Tunis El Manar , Tunis, Tunisia
| | - Hayet Douik
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Fayza Ayari
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Hajer Abaza
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Tesnim Mamoghli
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Latifa Harzallah
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Cathy Fortier
- Immunology and Histocompatibility Department, CIH-HOG, AP-HP/GHU-Nord, IUH and INSERM, U940, Saint-Louis Hospital , Paris, France
| | - Wahid Boukouaci
- Immunology and Histocompatibility Department, CIH-HOG, AP-HP/GHU-Nord, IUH and INSERM, U940, Saint-Louis Hospital , Paris, France
| | | | - Dominique Charron
- Immunology and Histocompatibility Department, CIH-HOG, AP-HP/GHU-Nord, IUH and INSERM, U940, Saint-Louis Hospital , Paris, France
| | - Sonia Gara
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Fethi Guemira
- Clinical Biology Department, Salah Azaiz Institut , Tunis, Tunisia
| | - Ryad Tamouza
- INSERM, U955, Translational Psychiatry, Paris-East University , Creteil, France.,AP-HP, DHU PePSY, Department of Psychiatry, Hôpital Henri Mondor, Université Paris-Est-Creteil , Creteil, France.,Fondation FondaMental , Creteil F94000, France
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17
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Molfetta R, Zingoni A, Santoni A, Paolini R. Post-translational Mechanisms Regulating NK Cell Activating Receptors and Their Ligands in Cancer: Potential Targets for Therapeutic Intervention. Front Immunol 2019; 10:2557. [PMID: 31736972 PMCID: PMC6836727 DOI: 10.3389/fimmu.2019.02557] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/15/2019] [Indexed: 12/12/2022] Open
Abstract
Efficient clearance of transformed cells by Natural Killer (NK) cells is regulated by several activating receptors, including NKG2D, NCRs, and DNAM-1. Expression of these receptors as well as their specific “induced self” ligands is finely regulated during malignant transformation through the integration of different mechanisms acting on transcriptional, post-transcriptional, and post-translational levels. Among post-translational mechanisms, the release of activating ligands in the extracellular milieu through protease-mediated cleavage or by extracellular vesicle secretion represents some relevant cancer immune escape processes. Moreover, covalent modifications including ubiquitination and SUMOylation also contribute to negative regulation of NKG2D and DNAM-1 ligand surface expression resulting either in ligand intracellular retention and/or ligand degradation. All these mechanisms greatly impact on NK cell mediated recognition and killing of cancer cells and may be targeted to potentiate NK cell surveillance against tumors. Our mini review summarizes the main post-translational mechanisms regulating the expression of activating receptors and their ligands with particular emphasis on the contribution of ligand shedding and of ubiquitin and ubiquitin-like modifications in reducing target cell susceptibility to NK cell-mediated killing. Strategies aimed at inhibiting shedding of activating ligands and their modifications in order to preserve ligand expression on cancer cells will be also discussed.
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Affiliation(s)
- Rosa Molfetta
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Alessandra Zingoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Rossella Paolini
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
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18
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Cox ST, Hernandez D, Danby R, Turner TR, Madrigal JA. Diversity and characterisation of polymorphic 3' untranslated region haplotypes of MICA and MICB genes. HLA 2019; 92:392-402. [PMID: 30471210 DOI: 10.1111/tan.13434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/01/2018] [Accepted: 11/20/2018] [Indexed: 12/21/2022]
Abstract
MICA and MICB genes encode ligands that interact with the natural killer (NK) cell activating receptor, NKG2D. These ligands display a highly polymorphic allelic repertoire, although the true functional significance of this polymorphism remains elusive. We previously reported additional polymorphism in the 5' untranslated region (UTR) proximal promoter region of these genes by sequencing international histocompatibility workshop (IHW) cell line DNA promoter and coding regions. The present study extends this analysis by further characterising the 3'UTR region of the same IHW reference panel to achieve a more complete understanding of MICA and MICB haplotype diversity and possible functional relevance. We found 17 extended MICA haplotypes encompassing the coding region and 3'UTR, including four novel haplotypes identified in IHW cell line DNA. This increased to 21 when also considering the 5'UTR proximal promoter region. Analysis of the MICB 3'UTR revealed two novel sequences in cell lines KLO and WIN designated MICB-UTR8 and UTR9, respectively. A total of 11 MICB haplotypes were identified in this study and five were unique. The present study, characterising MICA/B 3'UTR polymorphism utilising IHW reference cell lines, could be useful for future studies investigating the role of microRNA in post-transcriptional repression of gene expression and for immunotherapy strategies to combat cancer progression.
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Affiliation(s)
- Steven T Cox
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.,UCL Cancer Institute, Royal Free Campus, London, UK
| | - Diana Hernandez
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.,UCL Cancer Institute, Royal Free Campus, London, UK
| | - Robert Danby
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.,Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Thomas R Turner
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.,UCL Cancer Institute, Royal Free Campus, London, UK
| | - J Alejandro Madrigal
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.,UCL Cancer Institute, Royal Free Campus, London, UK
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19
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Onyeaghala G, Lane J, Pankratz N, Nelson HH, Thyagarajan B, Walcheck B, Anderson KE, Prizment AE. Association between MICA polymorphisms, s-MICA levels, and pancreatic cancer risk in a population-based case-control study. PLoS One 2019; 14:e0217868. [PMID: 31166958 PMCID: PMC6550421 DOI: 10.1371/journal.pone.0217868] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/20/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Pancreatic tumor cells may avoid immune surveillance by releasing the transmembrane major histocompatibility complex class I chain-related A (MICA) protein in soluble form (s-MICA). We hypothesized that the presence of the A5.1 polymorphism in the MICA gene, which encodes a truncated MICA protein, is associated with higher s-MICA levels and increased pancreatic cancer risk. METHODS MICA alleles and s-MICA levels were measured in 121 pancreatic cancer cases and 419 controls. General linear regression with a log transformation assessed geometric means of s-MICA levels across MICA alleles. Unconditional logistic regression was used to calculate the odds ratio (OR) and 95% confidence intervals (CI) for pancreatic cancer associated with MICA alleles. RESULTS After multivariate adjustment, participants with at least one copy of the A5.1 allele versus no A5.1 allele had 1.35 (95% CI: 1.05-1.74) times greater s-MICA levels (1.65 times higher for cases and 1.28, for controls) and increased risk of pancreatic cancer (OR = 1.91, 95% CI: 1.05-3.48). CONCLUSIONS Our study suggests higher risk of pancreatic cancer among those with the MICA A5.1 polymorphism, which may be explained by an increase in s-MICA secretion and impaired immune response. IMPACT These findings provide further evidence at the genetic and molecular level of the important role of MICA in pancreatic cancer development, and may have important implications with regards to pancreatic cancer screening.
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Affiliation(s)
- Guillaume Onyeaghala
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN, United States of America
| | - John Lane
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States of America
| | - Nathan Pankratz
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States of America
| | - Heather H. Nelson
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN, United States of America
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
| | - Bharat Thyagarajan
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States of America
| | - Bruce Walcheck
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States of America
| | - Kristin E. Anderson
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN, United States of America
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
| | - Anna E. Prizment
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN, United States of America
- University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States of America
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20
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Frazao A, Rethacker L, Messaoudene M, Avril MF, Toubert A, Dulphy N, Caignard A. NKG2D/NKG2-Ligand Pathway Offers New Opportunities in Cancer Treatment. Front Immunol 2019; 10:661. [PMID: 30984204 PMCID: PMC6449444 DOI: 10.3389/fimmu.2019.00661] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/11/2019] [Indexed: 12/18/2022] Open
Abstract
The antitumor functions of NK cells are regulated by the integration of positive and negative signals triggered by numerous membrane receptors present on the NK cells themselves. Among the main activating receptors, NKG2D binds several stress-induced molecules on tumor targets. Engagement of NKG2D by its ligands (NKG2D-Ls) induces NK cell activation leading to production of cytokines and target cell lysis. These effects have therapeutic potential as NKG2D-Ls are widely expressed by solid tumors, whereas their expression in healthy cells is limited. Here, we describe the genetic and environmental factors regulating the NKG2D/NKG2D-L pathway in tumors. NKG2D-L expression is linked to cellular stress and cell proliferation, and has been associated with oncogenic mutations. Tumors have been found to alter their to NKG2D-L expression as they progress, which interferes with the antitumor function of the pathway. Nevertheless, this pathway could be advantageously exploited for cancer therapy. Various cancer treatments, including chemotherapy and targeted therapies, indirectly interfere with the cellular and soluble forms of NKG2D-Ls. In addition, NKG2D introduced into chimeric antigen receptors in T- and NK cells is a promising tumor immunotherapy approach.
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Affiliation(s)
- Alexandra Frazao
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France
| | - Louise Rethacker
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France
| | - Meriem Messaoudene
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France.,U1015 INSERM-CIC, Institut Gustave Roussy, Villejuif, France
| | - Marie-Françoise Avril
- Assistance Publique-Hôpitaux de Paris, Department of Dermatology, Hospital Cochin, University Paris Descartes, Paris, France.,Univ Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Paris, France
| | - Antoine Toubert
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France.,Univ Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Paris, France.,Assistance Publique-Hôpitaux de Paris, Hôpital Saint-Louis, Department of Immunology and Histocompatibility, Paris, France
| | - Nicolas Dulphy
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France.,Univ Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d'Hématologie, Paris, France.,Assistance Publique-Hôpitaux de Paris, Hôpital Saint-Louis, Department of Immunology and Histocompatibility, Paris, France
| | - Anne Caignard
- INSERMU1160, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, France
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21
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The association of HLA-G polymorphisms and the synergistic effect of sMICA and sHLA-G with chronic kidney disease and allograft acceptance. PLoS One 2019; 14:e0212750. [PMID: 30794652 PMCID: PMC6386361 DOI: 10.1371/journal.pone.0212750] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 02/10/2019] [Indexed: 11/19/2022] Open
Abstract
The HLA-G and MICA genes are stimulated under inflammatory conditions and code for soluble (sMICA and sHLA-G) or membrane-bound molecules that exhibit immunomodulatory properties. It is still unclear whether they would have a synergistic or antagonistic effect on the immunomodulation of the inflammatory response, such as in chronic kidney disease (CKD), contributing to a better prognosis after the kidney transplantation. In this study, we went from genetic to plasma analysis, first evaluating the polymorphism of MICA, NKG2D and HLA-G in a cohort from Southern Brazil, subdivided in a control group of individuals (n = 75), patients with CKD (n = 94), and kidney-transplant (KT) patients (n = 64). MICA, NKG2D and HLA-G genotyping was performed by polymerase chain reaction with specific oligonucleotide probes, Taqman and Sanger sequencing, respectively. Levels of soluble forms of MICA and HLA-G were measured in plasma with ELISA. Case-control analysis showed that the individuals with haplotype HLA-G*01:01/UTR-4 have a lower susceptibility to develop chronic kidney disease (OR = 0.480; p = 0.032). Concerning the group of kidney-transplant patients, the HLA-G genotypes +3010 GC (rs1710) and +3142 GC (rs1063320) were associated with higher risk for allograft rejection (OR = 5.357; p = 0.013 and OR = 5.357, p = 0.013, respectively). Nevertheless, the genotype +3010 GG (OR = 0.136; p = 0.041) was associated with kidney allograft acceptance, suggesting that it is a protection factor for rejection. In addition, the phenotypic analysis revealed higher levels of sHLA-G (p = 0.003) and sMICA (p < 0.001) in plasma were associated with the development of CKD. For patients who were already under chronic pathological stress and underwent a kidney transplant, a high sMICA (p = 0.001) in pre-transplant proved to favor immunomodulation and allograft acceptance. Even so, the association of genetic factors with differential levels of soluble molecules were not evidenced, we displayed a synergistic effect of sMICA and sHLA-G in response to inflammation. This increase was observed in CKD patients, that when undergo transplantation, had this previous amount of immunoregulatory molecules as a positive factor for the allograft acceptance.
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22
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Cancer Exosomes as Conveyors of Stress-Induced Molecules: New Players in the Modulation of NK Cell Response. Int J Mol Sci 2019; 20:ijms20030611. [PMID: 30708970 PMCID: PMC6387166 DOI: 10.3390/ijms20030611] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 01/22/2019] [Accepted: 01/30/2019] [Indexed: 12/19/2022] Open
Abstract
Natural killer (NK) cells are innate lymphoid cells that play a pivotal role in tumor surveillance. Exosomes are nanovesicles released into the extracellular environment via the endosomal vesicle pathway and represent an important mode of intercellular communication. The ability of anticancer chemotherapy to enhance the immunogenic potential of malignant cells mainly relies on the establishment of the immunogenic cell death (ICD) and the release of damage-associated molecular patterns (DAMPs). Moreover, the activation of the DNA damage response (DDR) and the induction of senescence represent two crucial modalities aimed at promoting the clearance of drug-treated tumor cells by NK cells. Emerging evidence has shown that stress stimuli provoke an increased release of exosome secretion. Remarkably, tumor-derived exosomes (Tex) produced in response to stress carry distinct type of DAMPs that activate innate immune cell populations. Moreover, stress-induced ligands for the activating receptor NKG2D are transported by this class of nanovesicles. Here, we will discuss how Tex interact with NK cells and provide insight into their potential role in response to chemotherapy-induced stress stimuli. The capability of some "danger signals" carried by exosomes that indirectly affect the NK cell activity in the tumor microenvironment will be also addressed.
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23
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A Valine Mismatch at Position 129 of MICA Is an Independent Predictor of Cytomegalovirus Infection and Acute Kidney Rejection in Simultaneous Pancreas⁻Kidney Transplantation Recipients. Int J Mol Sci 2018; 19:ijms19092618. [PMID: 30181474 PMCID: PMC6164160 DOI: 10.3390/ijms19092618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 11/16/2022] Open
Abstract
The polymorphic major histocompatibility complex class I chain-related molecule A (MICA) and its soluble form (sMICA) interact with activating receptor natural-killer group 2 member D (NKG2D) on natural-killer (NK) and T cells, thereby modifying immune responses to transplantation and infectious agents (e.g., cytomegalovirus). Two single-nucleotide polymorphisms (SNPs), rs2596538GA in the MICA promoter and rs1051792AG in the coding region (MICA-129Val/Met), influence MICA expression or binding to NKG2D, with MICA-129Met molecules showing higher receptor affinity. To investigate the impact of these SNPs on the occurrence of cytomegalovirus infection or acute rejection (AR) in individuals who underwent simultaneous pancreas⁻kidney transplantation (SPKT), 50 recipient-donor pairs were genotyped, and sMICA levels were measured during the first year post-transplantation. Recipients with a Val-mismatch (recipient Met/Met and donor Val/Met or Val/Val) showed shorter cytomegalovirus infection-free and shorter kidney AR-free survival. Additionally, Val mismatch was an independent predictor of cytomegalovirus infection and kidney AR in the first year post-transplantation. Interestingly, sMICA levels were lower in rs2596538AA and MICA129Met/Met-homozygous recipients. These results provide further evidence that genetic variants of MICA influence sMICA levels, and that Val mismatch at position 129 increases cytomegalovirus infection and kidney AR risk during the first year post-SPKT.
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24
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Zuo J, Mohammed F, Moss P. The Biological Influence and Clinical Relevance of Polymorphism Within the NKG2D Ligands. Front Immunol 2018; 9:1820. [PMID: 30166984 PMCID: PMC6105697 DOI: 10.3389/fimmu.2018.01820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 07/24/2018] [Indexed: 01/23/2023] Open
Abstract
NKG2D is a major regulator of the activity of cytotoxic cells and interacts with eight different ligands (NKG2DL) from two families of MIC and ULBP proteins. The selective forces that drove evolution of NKG2DL are uncertain, but are likely to have been dominated by infectious disease and cancer. Of interest, NKG2DL are some of the most polymorphic genes outside the MHC locus and the study of these is uncovering a range of novel observations regarding the structure and function of NKG2DL. Polymorphism is present within all NKG2DL members and varies markedly within different populations. Allelic variation influences functional responses through three major mechanisms. First, it may drive differential levels of protein expression, modulate subcellular trafficking, or regulate release of soluble isoforms. In addition, it may alter the affinity of interaction with NKG2D or modulate cytotoxic activity from the target cell. In particular, ligands with high affinity for NKG2D are associated with down regulation of this protein on the effector cell, effectively limiting cytotoxic activity in a negative-feedback circuit. Given these observations, it is not surprising that NKG2DL alleles are associated with relative risk for development of several clinical disorders and the critical role of the NKG2D:NKG2DL interaction is demonstrated in many murine models. Increased understanding of the biophysical and functional consequences of this polymorphism is likely to provide insights into novel immunotherapeutic approaches.
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Affiliation(s)
- Jianmin Zuo
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Fiyaz Mohammed
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Paul Moss
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
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25
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Von Linsingen R, Gelmini GF, Bicalho MDG, De Carvalho NS. MICA-129 A/G dimorphism, its relation to soluble mica plasma level and spontaneous preterm birth: A case-control study. J Reprod Immunol 2018; 129:9-14. [PMID: 30025372 DOI: 10.1016/j.jri.2018.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 05/24/2018] [Accepted: 07/09/2018] [Indexed: 11/25/2022]
Abstract
The aim of this case- control study was to investigate the association between preterm birth (PTB), MICA-129 A/G dimorphism and sMICA levels. Fifty pregnant women with singleton pregnancy and previous PTB, or clinic diagnostic of threatened preterm labor in the actual pregnancy, or cervical length less than 25 mm and 50 healthy pregnant women were enrolled. DNA was extracted for genotyping for MICA-129 A/G by real-time PCR and sMICA plasma level was quantified by sandwich ELISA assay. Clinical and socioeconomic characteristics, results of TaqMan® genotyping and ELISA quantification were compared between the groups using qui-square, Fisher´s exact or Mann-Whitney test. A binary logistic regression model was used to predict PTB. The correlation between MICA-129 A/G genotypes and sMICA levels was investigated. There were not statistically significant differences between MICA-129 A/G polymorphism and sMICA plasma level.There was found a correlation between MICA-129 val/val genotype and higher levels of sMICA (ρ: -0.342; p:0.001). The presence of MICA-129 val/val genotype may be influencing sMICA expression.
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Affiliation(s)
- Renate Von Linsingen
- Department of Gynecology and Obstetrics, Infectious diseases in Gynecology and Obstetrics Sector, Clinics Hospital of University of Paraná (UFPR), Post Graduate Program of Gynecology and Obstetrics, Rua General Carneiro, 181, Alto da Glória, CEP80060-900 Curitiba, Paraná, Brazil.
| | - Geórgia Fernanda Gelmini
- Genetics Department of Federal University of Paraná. LIGH- Immunogenetics and Histocompatibility Laboratory, Avenida Coronel Francisco H. dos Santos, 100. Centro Politécnico - Jardim das Américas, CEP: 80050-540 Curitiba, Paraná, Brazil.
| | - Maria da Graça Bicalho
- Genetics Department of Federal University of Paraná. LIGH- Immunogenetics and Histocompatibility Laboratory, Avenida Coronel Francisco H. dos Santos, 100. Centro Politécnico - Jardim das Américas, CEP: 80050-540 Curitiba, Paraná, Brazil.
| | - Newton Sérgio De Carvalho
- Department of Gynecology and Obstetrics, Infectious diseases in Gynecology and Obstetrics Sector, Clinics Hospital of University of Paraná (UFPR), Post Graduate Program of Gynecology and Obstetrics, Rua General Carneiro, 181, Alto da Glória, CEP80060-900 Curitiba, Paraná, Brazil.
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26
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Cox ST, Danby R, Hernandez D, Laza-Briviesca R, Pearson H, Madrigal JA, Saudemont A. Functional Characterisation and Analysis of the Soluble NKG2D Ligand Repertoire Detected in Umbilical Cord Blood Plasma. Front Immunol 2018; 9:1282. [PMID: 29963042 PMCID: PMC6013648 DOI: 10.3389/fimmu.2018.01282] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 05/22/2018] [Indexed: 12/19/2022] Open
Abstract
We previously reported that cord blood plasma (CBP) contains significantly more soluble NKG2D ligands (sNKG2DLs), such as sMICB and sULBP1, than healthy adult plasma. Viral infection or malignant transformation upregulates expression of NKG2D ligand on affected cells, leading to NK group 2, member D (NKG2D)-mediated natural killer (NK) cell lysis. Conversely, sNKG2DL engagement of NKG2D decreases NK cell cytotoxicity leading to viral or tumour immune escape. We hypothesised that sNKG2DLs detected in CBP may represent an additional fetal–maternal tolerance mechanism. To further understand the role of sNKG2DL in pregnancy and individual contributions of the various ligand types, we carried out functional analysis using 181 CBP samples. To test the ability of CBP to suppress the function of NK cells in vitro, we measured expression of NKG2D, CD107a, and IFN-γ in NK cells from control donors after exposure to 181 individual CBP samples and characterised the sMICA, sMICB, and sULBP1 content of each one. Furthermore, to detect possible allelic differences between samples that may also affect function, we carried out umbilical cord blood typing for MHC class I-related chain A (MICA) and MHC class I-related chain B (MICB) coding and promoter allelic types. Strongest functional correlations related to increasing concentration of exosomal sULBP1, which was present in all CBP samples tested. In addition, common MICB alleles, such as MICB*005:02, resulted in increased concentration of sMICB. Interestingly, MICB*005:02 uniquely associated with eight different promoter types. Among promoter polymorphisms, P2 resulted in the highest expression of sMICB and P9 the least and was confirmed using luciferase reporter assays. Higher levels of sMICB associated with lower IFN-γ production, indicating that sMICB also suppressed NK cell function. We also examined the MICA functional dimorphism encoding methionine (met) or valine (val) at residue 129 associated with strong or weak NKG2D binding, respectively. Most sMICA associated with val/val, some with met/val but none with met/met and, counter-intuitively, the presence of sMICA in CBP increased NK cell cytotoxicity. We propose a model for fetal–maternal tolerance, whereby NK cell activity is limited by sULBP1 and sMICB in CBP. The release of 129val sMICA with weak NKG2D signalling may reduce the overall net suppressive signal and break tolerance thus allowing fetal NK cells to overcome immunological threats in utero.
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Affiliation(s)
- Steven T Cox
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,Cancer Institute, University College London, London, United Kingdom
| | - Robert Danby
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Diana Hernandez
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,Cancer Institute, University College London, London, United Kingdom
| | | | - Hayley Pearson
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
| | - J Alejandro Madrigal
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,Cancer Institute, University College London, London, United Kingdom
| | - Aurore Saudemont
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,Cancer Institute, University College London, London, United Kingdom
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27
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Rohn H, Tomoya Michita R, Schwich E, Dolff S, Gäckler A, Trilling M, Le-Trilling VTK, Wilde B, Korth J, Heinemann FM, Horn PA, Kribben A, Witzke O, Rebmann V. The Donor Major Histocompatibility Complex Class I Chain-Related Molecule A Allele rs2596538 G Predicts Cytomegalovirus Viremia in Kidney Transplant Recipients. Front Immunol 2018; 9:917. [PMID: 29867932 PMCID: PMC5953334 DOI: 10.3389/fimmu.2018.00917] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/13/2018] [Indexed: 01/14/2023] Open
Abstract
The interaction of major histocompatibility complex class I chain-related protein A (MICA) and its cognate activating receptor natural killer (NK) group 2 member D (NKG2D) receptor plays a significant role in viral immune control. In the context of kidney transplantation (KTx), cytomegalovirus (CMV) frequently causes severe complications. Hypothesizing that functional polymorphisms of the MICA/NKG2D axis might affect antiviral NK and T cell responses to CMV, we explored the association of the MICA-129 Met/Val single nucleotide polymorphism (SNP) (affecting the binding affinity of MICA with the NKG2D receptor), the MICA rs2596538 G/A SNP (influencing MICA transcription), and the NKG2D rs1049174 G/C SNP (determining the cytotoxic potential of effector cells) with the clinical outcome of CMV during the first year after KTx in a cohort of 181 kidney donor-recipients pairs. Univariate analyses identified the donor MICA rs2596538 G allele status as a protective prognostic determinant for CMV disease. In addition to the well-known prognostic factors CMV high-risk sero-status of patients and the application of lymphocyte-depleting drugs, the donor MICA rs2596538 G allele carrier status was confirmed by multivariate analyses as novel-independent factor predicting the development of CMV infection/disease during the first year after KTx. The results of our study emphasize the clinical importance of the MICA/NKG2D axis in CMV control in KTx and point out that the potential MICA transcription in the donor allograft is of clinically relevant importance for CMV immune control in this allogeneic situation. Furthermore, they provide substantial evidence that the donor MICA rs2596538 G allele carrier status is a promising genetic marker predicting CMV viremia after KTx. Thus, in the kidney transplant setting, donor MICA rs2596538 G may help to allow the future development of personal CMV approaches within a genetically predisposed patient cohort.
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Affiliation(s)
- Hana Rohn
- Department of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Rafael Tomoya Michita
- Institute for Transfusion Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Esther Schwich
- Institute for Transfusion Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Sebastian Dolff
- Department of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Anja Gäckler
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Mirko Trilling
- Institute for Virology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | | | - Benjamin Wilde
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Johannes Korth
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Falko M Heinemann
- Institute for Transfusion Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Peter A Horn
- Institute for Transfusion Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Andreas Kribben
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Oliver Witzke
- Department of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Vera Rebmann
- Institute for Transfusion Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany
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28
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Zingoni A, Vulpis E, Cecere F, Amendola MG, Fuerst D, Saribekyan T, Achour A, Sandalova T, Nardone I, Peri A, Soriani A, Fionda C, Mariggiò E, Petrucci MT, Ricciardi MR, Mytilineos J, Cippitelli M, Cerboni C, Santoni A. MICA-129 Dimorphism and Soluble MICA Are Associated With the Progression of Multiple Myeloma. Front Immunol 2018; 9:926. [PMID: 29765374 PMCID: PMC5938351 DOI: 10.3389/fimmu.2018.00926] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/13/2018] [Indexed: 12/11/2022] Open
Abstract
Natural killer (NK) cells are immune innate effectors playing a pivotal role in the immunosurveillance of multiple myeloma (MM) since they are able to directly recognize and kill MM cells. In this regard, among activating receptors expressed by NK cells, NKG2D represents an important receptor for the recognition of MM cells, being its ligands expressed by tumor cells, and being able to trigger NK cell cytotoxicity. The MHC class I-related molecule A (MICA) is one of the NKG2D ligands; it is encoded by highly polymorphic genes and exists as membrane-bound and soluble isoforms. Soluble MICA (sMICA) is overexpressed in the serum of MM patients, and its levels correlate with tumor progression. Interestingly, a methionine (Met) to valine (Val) substitution at position 129 of the α2 heavy chain domain classifies the MICA alleles into strong (MICA-129Met) and weak (MICA-129Val) binders to NKG2D receptor. We addressed whether the genetic polymorphisms in the MICA-129 alleles could affect MICA release during MM progression. The frequencies of Val/Val, Val/Met, and Met/Met MICA-129 genotypes in a cohort of 137 MM patients were 36, 43, and 22%, respectively. Interestingly, patients characterized by a Val/Val genotype exhibited the highest levels of sMICA in the sera. In addition, analysis of the frequencies of MICA-129 genotypes among different MM disease states revealed that Val/Val patients had a significant higher frequency of relapse. Interestingly, NKG2D was downmodulated in NK cells derived from MICA-129Met/Met MM patients. Results obtained by structural modeling analysis suggested that the Met to Val dimorphism could affect the capacity of MICA to form an optimal template for NKG2D recognition. In conclusion, our findings indicate that the MICA-129Val/Val variant is associated with significantly higher levels of sMICA and the progression of MM, strongly suggesting that the usage of soluble MICA as prognostic marker has to be definitely combined with the patient MICA genotype.
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Affiliation(s)
- Alessandra Zingoni
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Elisabetta Vulpis
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Francesca Cecere
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Maria G Amendola
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Daniel Fuerst
- German Red Cross Blood Donor Services, Baden-Wuerttemberg-Hessia, Ulm, Germany
| | - Taron Saribekyan
- German Red Cross Blood Donor Services, Baden-Wuerttemberg-Hessia, Ulm, Germany
| | - Adnane Achour
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Tatyana Sandalova
- Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.,Division of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Ilaria Nardone
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Agnese Peri
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Cinzia Fionda
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Elena Mariggiò
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome, Italy
| | - Maria T Petrucci
- Department of Cellular Biotechnologies and Hematology, "Sapienza" University of Rome, Rome, Italy
| | - Maria R Ricciardi
- Department of Clinical and Molecular Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Joannis Mytilineos
- German Red Cross Blood Donor Services, Baden-Wuerttemberg-Hessia, Ulm, Germany
| | - Marco Cippitelli
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Cristina Cerboni
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine, "Sapienza" University of Rome, Rome, Italy.,Istituto Pasteur Italia-Cenci Bolognetti Fondazione, Rome, Italy
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Zingoni A, Molfetta R, Fionda C, Soriani A, Paolini R, Cippitelli M, Cerboni C, Santoni A. NKG2D and Its Ligands: "One for All, All for One". Front Immunol 2018; 9:476. [PMID: 29662484 PMCID: PMC5890157 DOI: 10.3389/fimmu.2018.00476] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 02/22/2018] [Indexed: 01/30/2023] Open
Abstract
The activating receptor NKG2D is peculiar in its capability to bind to numerous and highly diversified MHC class I-like self-molecules. These ligands are poorly expressed on normal cells but can be induced on damaged, transformed or infected cells, with the final NKG2D ligand expression resulting from multiple levels of regulation. Although redundant molecular mechanisms can converge in the regulation of all NKG2D ligands, different stimuli can induce specific cellular responses, leading to the expression of one or few ligands. A large body of evidence demonstrates that NK cell activation can be triggered by different NKG2D ligands, often expressed on the same cell, suggesting a functional redundancy of these molecules. However, since a number of evasion mechanisms can reduce membrane expression of these molecules both on virus-infected and tumor cells, the co-expression of different ligands and/or the presence of allelic forms of the same ligand guarantee NKG2D activation in various stressful conditions and cell contexts. Noteworthy, NKG2D ligands can differ in their ability to down-modulate NKG2D membrane expression in human NK cells supporting the idea that NKG2D transduces different signals upon binding various ligands. Moreover, whether proteolytically shed and exosome-associated soluble NKG2D ligands share with their membrane-bound counterparts the same ability to induce NKG2D-mediated signaling is still a matter of debate. Here, we will review recent studies on the NKG2D/NKG2D ligand biology to summarize and discuss the redundancy and/or diversity in ligand expression, regulation, and receptor specificity.
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Affiliation(s)
- Alessandra Zingoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Rosa Molfetta
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Cinzia Fionda
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Rossella Paolini
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Marco Cippitelli
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Cristina Cerboni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
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30
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Anti-NKG2D mAb: A New Treatment for Crohn's Disease? Int J Mol Sci 2017; 18:ijms18091997. [PMID: 28926962 PMCID: PMC5618646 DOI: 10.3390/ijms18091997] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/24/2017] [Accepted: 09/11/2017] [Indexed: 01/09/2023] Open
Abstract
Crohn’s disease (CD) and ulcerative colitis (UC) are immunologically-mediated, debilitating conditions resulting from destructive inflammation of the gastrointestinal tract. The pathogenesis of IBD is incompletely understood, but is considered to be the result of an abnormal immune response with a wide range of cell types and proteins involved. Natural Killer Group 2D (NKG2D) is an activating receptor constitutively expressed on human Natural Killer (NK), γδ T, mucosal-associated invariant T (MAIT), CD56+ T, and CD8+ T cells. Activation of NKG2D triggers cellular proliferation, cytokine production, and target cell killing. Research into the NKG2D mechanism of action has primarily been focused on cancer and viral infections where cytotoxicity evasion is a concern. In human inflammatory bowel disease (IBD) this system is less characterized, but the ligands have been shown to be highly expressed during intestinal inflammation and the following receptor activation may contribute to tissue degeneration. A recent phase II clinical trial showed that an antibody against NKG2D induced clinical remission of CD in some patients, suggesting NKG2D and its ligands to be of importance in the pathogenesis of CD. This review will describe the receptor and its ligands in intestinal tissues and the clinical potential of blocking NKG2D in Crohn’s disease.
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31
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Mariaselvam CM, Boukouaci W, Charron D, Krishnamoorthy R, Tamouza R, Misra DP, Negi VS. Association of MICA-129 polymorphism and circulating soluble MICA level with rheumatoid arthritis in a south Indian Tamil population. Int J Rheum Dis 2017; 21:656-663. [PMID: 28752674 DOI: 10.1111/1756-185x.13138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a clinically heterogeneous chronic inflammatory disorder characterized by synovitis leading to joint destruction. Both genetic and environmental factors are involved in the pathogenesis of RA. Significant dysregulation of NKG2D, an activating receptor of natural killer and certain autoreactive T cells as well as its ligand major histocompatibility complex class I chain-related gene A (MICA) has been implicated in perpetuating the pathology of RA. Since the genetic polymorphism in MICA gene (MICA-129 met/val polymorphism at codon 129) is known to affect its binding affinity to NKG2D, we explored its influence on RA susceptibility and disease severity. METHODS The MICA-129 met/val polymorphism was examined in 270 patients with RA and 232 healthy controls by TaqMan 5'-nuclease assay. Serum soluble MICA (sMICA) was measured in a subset of 89 patients and 80 controls by enzyme-linked immunosorbent assay. RESULTS We observed that the frequency of MICA-129 val allele (73% vs. 65%, Pc = 0.006, odds ratio = 1.48, 95% CI = 1.12-1.95) was higher in patients than in controls. sMICA levels were significantly higher in patients with RA than in controls (P < 0.0001). sMICA levels were higher in patients with val/val genotype than in those with met/val or met/met genotype (P = 0.03). The MICA-129 val/val genotype was associated with high titers of sMICA in patients with deforming RA phenotype (P = 0.02), suggesting a role in determination of severity of RA. CONCLUSION MICA-129 val/val genotype, associated with higher levels of circulating sMICA, may influence disease susceptibility and associate with increased severity of RA in south Indian Tamils.
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Affiliation(s)
- Christina M Mariaselvam
- Department of Clinical Immunology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India.,INSERM, UMRS 1160, Saint Louis Hospital, Paris, France
| | | | - Dominique Charron
- INSERM, UMRS 1160, Saint Louis Hospital, Paris, France.,Jean Dausset Department of Immunology and Immunogenetics and LabExTransplantex, Saint Louis Hospital, Paris, France
| | | | - Ryad Tamouza
- INSERM, UMRS 1160, Saint Louis Hospital, Paris, France.,Jean Dausset Department of Immunology and Immunogenetics and LabExTransplantex, Saint Louis Hospital, Paris, France
| | - Durga P Misra
- Department of Clinical Immunology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India.,Department of Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences (SGPGIMS), Lucknow, India
| | - Vir S Negi
- Department of Clinical Immunology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
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32
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Ouni N, Ben Chaaben A, Kablouti G, Lajnef M, Ayari F, Abaza H, Damak T, Harzallah L, Benammar-Elgaaeid A, Guemira F, Tamouza R. MICA-129Met/Val Polymorphism Is Associated with Early-Onset Breast Cancer Risk. Immunol Invest 2017; 46:603-614. [DOI: 10.1080/08820139.2017.1336175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Nesrine Ouni
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Arij Ben Chaaben
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
- Jean Dausset Laboratory and INSERM, Saint Louis Hospital, Paris, France
| | - Ghalia Kablouti
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Mohamed Lajnef
- French Institute of Health and Medical Research, Mondor Institute for Biomedical Research INSERM U955, Creteil, France
| | - Fayza Ayari
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Hajer Abaza
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Tarek Damak
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Latifa Harzallah
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Amel Benammar-Elgaaeid
- Immunology Department, Faculty of Mathematics, Physics and Natural Sciences, Tunis El Manar University, Tunisia
| | - Fethi Guemira
- Clinical Biology Department, Salah Azaiez Institute, Tunis, Tunisia
| | - Ryad Tamouza
- Jean Dausset Laboratory and INSERM, Saint Louis Hospital, Paris, France
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33
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Zuo J, Willcox CR, Mohammed F, Davey M, Hunter S, Khan K, Antoun A, Katakia P, Croudace J, Inman C, Parry H, Briggs D, Malladi R, Willcox BE, Moss P. A disease-linked ULBP6 polymorphism inhibits NKG2D-mediated target cell killing by enhancing the stability of NKG2D ligand binding. Sci Signal 2017; 10:10/481/eaai8904. [PMID: 28559451 DOI: 10.1126/scisignal.aai8904] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
NKG2D (natural killer group 2, member D) is an activating receptor found on the surface of immune cells, including natural killer (NK) cells, which regulates innate and adaptive immunity through recognition of the stress-induced ligands ULBP1 (UL16 binding protein 1) to ULBP6 and MICA/B. Similar to class I human leukocyte antigen (HLA), these NKG2D ligands have a major histocompatibility complex-like fold and exhibit pronounced polymorphism, which influences human disease susceptibility. However, whereas class I HLA polymorphisms occur predominantly in the α1α2 groove and affect antigen binding, the effects of most NKG2D ligand polymorphisms are unclear. We studied the molecular and functional consequences of the two major alleles of ULBP6, the most polymorphic ULBP gene, which are associated with autoimmunity and relapse after stem cell transplantation. Surface plasmon resonance and crystallography studies revealed that the arginine-to-leucine polymorphism within ULBP0602 affected the NKG2D-ULBP6 interaction by generating an energetic hotspot. This resulted in an NKG2D-ULBP0602 affinity of 15.5 nM, which is 10- to 1000-fold greater than the affinities of other ULBP-NKG2D interactions and limited NKG2D-mediated activation. In addition, soluble ULBP0602 exhibited high-affinity competitive binding for NKG2D and partially suppressed NKG2D-mediated activation of NK cells by other NKG2D ligands. These effects resulted in a decrease in a range of NKG2D-mediated effector functions. Our results reveal that ULBP polymorphisms affect the strength of human lymphocyte responses to cellular stress signals and may offer opportunities for therapeutic intervention.
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Affiliation(s)
- Jianmin Zuo
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Carrie R Willcox
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Fiyaz Mohammed
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Martin Davey
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Stuart Hunter
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Kabir Khan
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Ayman Antoun
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Poonam Katakia
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Joanne Croudace
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Charlotte Inman
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK
| | - Helen Parry
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK.,Department of Haematology, University Hospital Birmingham, Birmingham B15 2TH, UK
| | - David Briggs
- National Health Service Blood and Transplant, Birmingham B15 2SG, UK
| | - Ram Malladi
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK.,Department of Haematology, University Hospital Birmingham, Birmingham B15 2TH, UK
| | - Benjamin E Willcox
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK.
| | - Paul Moss
- Cancer Immunology and Immunotherapy Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, UK. .,Department of Haematology, University Hospital Birmingham, Birmingham B15 2TH, UK
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Gam R, Shah P, Crossland RE, Norden J, Dickinson AM, Dressel R. Genetic Association of Hematopoietic Stem Cell Transplantation Outcome beyond Histocompatibility Genes. Front Immunol 2017; 8:380. [PMID: 28421078 PMCID: PMC5377073 DOI: 10.3389/fimmu.2017.00380] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 03/16/2017] [Indexed: 12/18/2022] Open
Abstract
The outcome of hematopoietic stem cell transplantation (HSCT) is controlled by genetic factors among which the leukocyte antigen human leukocyte antigen (HLA) matching is most important. In addition, minor histocompatibility antigens and non-HLA gene polymorphisms in genes controlling immune responses are known to contribute to the risks associated with HSCT. Besides single-nucleotide polymorphisms (SNPs) in protein coding genes, SNPs in regulatory elements such as microRNAs (miRNAs) contribute to these genetic risks. However, genetic risks require for their realization the expression of the respective gene or miRNA. Thus, gene and miRNA expression studies may help to identify genes and SNPs that indeed affect the outcome of HSCT. In this review, we summarize gene expression profiling studies that were performed in recent years in both patients and animal models to identify genes regulated during HSCT. We discuss SNP–mRNA–miRNA regulatory networks and their contribution to the risks associated with HSCT in specific examples, including forkheadbox protein 3 and regulatory T cells, the role of the miR-155 and miR-146a regulatory network for graft-versus-host disease, and the function of MICA and its receptor NKG2D for the outcome of HSCT. These examples demonstrate how SNPs affect expression or function of proteins that modulate the alloimmune response and influence the outcome of HSCT. Specific miRNAs targeting these genes and directly affecting expression of mRNAs are identified. It might be valuable in the future to determine SNPs and to analyze miRNA and mRNA expression in parallel in cohorts of HSCT patients to further elucidate genetic risks of HSCT.
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Affiliation(s)
- Rihab Gam
- Hematological Sciences, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Pranali Shah
- Institute of Cellular and Molecular Immunology, University Medical Centre Göttingen, Göttingen, Germany
| | - Rachel E Crossland
- Hematological Sciences, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Jean Norden
- Hematological Sciences, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Anne M Dickinson
- Hematological Sciences, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Ralf Dressel
- Institute of Cellular and Molecular Immunology, University Medical Centre Göttingen, Göttingen, Germany
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35
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Carapito R, Aouadi I, Ilias W, Bahram S. Natural Killer Group 2, Member D/NKG2D Ligands in Hematopoietic Cell Transplantation. Front Immunol 2017; 8:368. [PMID: 28396673 PMCID: PMC5366881 DOI: 10.3389/fimmu.2017.00368] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 03/14/2017] [Indexed: 12/17/2022] Open
Abstract
Natural killer group 2, member D (NKG2D) is an invariant activatory receptor present on subsets of natural killer and T lymphocytes. It stimulates the cytolytic effector response upon engagement of its various stress-induced ligands NKG2D ligands (NKG2DL). Malignant transformation and conditioning treatment prior to hematopoietic cell transplantation (HCT) are stress factors leading to the activation of the NKG2D/NKG2DL signaling in clinical settings. In the context of HCT, NKG2D-bearing cells can kill both tumor and healthy cells expressing NKG2DL. The NKG2D/NKG2DL engagement has therefore a key role in the regulation of one of the most salient issues in allogeneic HCT, i.e., maintaining a balance between graft-vs.-leukemia effect and graft-vs.-host disease. The present review summarizes the current state of our knowledge pertaining to the role of the NKG2D and NKG2DL in HCT.
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Affiliation(s)
- Raphael Carapito
- ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, LabEx TRANSPLANTEX, Centre de Recherche d'Immunologie et d'Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France; Laboratoire International Associé (LIA) INSERM, Strasbourg (France) - Nagano (Japan), Strasbourg, France; Fédération Hospitalo-Universitaire (FHU) OMICARE, Strasbourg, France; Laboratoire Central d'Immunologie, Pôle de Biologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Ismail Aouadi
- ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, LabEx TRANSPLANTEX, Centre de Recherche d'Immunologie et d'Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France; Laboratoire International Associé (LIA) INSERM, Strasbourg (France) - Nagano (Japan), Strasbourg, France; Fédération Hospitalo-Universitaire (FHU) OMICARE, Strasbourg, France
| | - Wassila Ilias
- ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, LabEx TRANSPLANTEX, Centre de Recherche d'Immunologie et d'Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France; Laboratoire International Associé (LIA) INSERM, Strasbourg (France) - Nagano (Japan), Strasbourg, France; Fédération Hospitalo-Universitaire (FHU) OMICARE, Strasbourg, France
| | - Seiamak Bahram
- ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, LabEx TRANSPLANTEX, Centre de Recherche d'Immunologie et d'Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France; Laboratoire International Associé (LIA) INSERM, Strasbourg (France) - Nagano (Japan), Strasbourg, France; Fédération Hospitalo-Universitaire (FHU) OMICARE, Strasbourg, France; Laboratoire Central d'Immunologie, Pôle de Biologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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36
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Baranwal AK, Mehra NK. Major Histocompatibility Complex Class I Chain-Related A (MICA) Molecules: Relevance in Solid Organ Transplantation. Front Immunol 2017; 8:182. [PMID: 28293239 PMCID: PMC5329007 DOI: 10.3389/fimmu.2017.00182] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Accepted: 02/08/2017] [Indexed: 11/27/2022] Open
Abstract
An ever growing number of reports on graft rejection and/or failure even with good HLA matches have highlighted an important role of non-HLA antigens in influencing allograft immunity. The list of non-HLA antigens that have been implicated in graft rejection in different types of organ transplantation has already grown long. Of these, the Major Histocompatibility Complex class I chain-related molecule A (MICA) is one of the most polymorphic and extensively studied non-HLA antigenic targets especially in the kidney transplantation. Humoral response to MICA antigens has repeatedly been associated with lower graft survival and an increased risk of acute and chronic rejection following kidney and liver transplantation with few studies showing conflicting results. Although there are clear indications of MICA antibodies being associated with adverse graft outcome, a definitive consensus on this relationship has not been arrived yet. Furthermore, only a few studies have dealt with the impact of MICA donor-specific antibodies as compared to those that are not donor specific on graft outcome. In addition to the membrane bound form, a soluble isoform of MICA (sMICA), which has the potential to engage the natural killer cell-activating receptor NKG2D resulting in endocytosis and degradation of receptor–ligand interaction complex leading to suppression of NKG2D-mediated host innate immunity, has been a subject of intense discussion. Most studies on sMICA have been directed toward understanding their influence on tumor growth, with limited literature focusing its role in transplant biology. Furthermore, a unique dimorphism (methionine to valine) at position 129 in the α2 domain categorizes MICA alleles into strong (MICA-129 met) and weak (MICA-129 val) binders of NKG2D receptor depending on whether they have methionine or valine at this position. Although the implications of MICA 129 dimorphism have been highlighted in hematopoietic stem cell transplantation, its role in solid organ transplantation is yet to be explored. This review summarizes the currently available information on MICA antibodies, soluble MICA, and MICA-129 dimorphism in a setting of solid organ transplantation.
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Affiliation(s)
| | - Narinder K Mehra
- All India Institute of Medical Sciences , New Delhi, Delhi , India
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37
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Risti M, Bicalho MDG. MICA and NKG2D: Is There an Impact on Kidney Transplant Outcome? Front Immunol 2017; 8:179. [PMID: 28289413 PMCID: PMC5326783 DOI: 10.3389/fimmu.2017.00179] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/07/2017] [Indexed: 01/06/2023] Open
Abstract
This paper aims to present an overview of MICA and natural killer group 2 member D (NKG2D) genetic and functional interactions and their impact on kidney transplant outcome. Organ transplantation has gone from what can accurately be called a “clinical experiment” to a routine and reliable practice, which has proven to be clinically relevant, life-saving and cost-effective when compared with non-transplantation management strategies of both chronic and acute end-stage organ failures. The kidney is the most frequently transplanted organ in the world (transplant-observatory1). The two treatment options for end-stage renal disease (ESRD) are dialysis and/or transplantation. Compared with dialysis, transplantation is associated with significant improvements in quality of life and overall longevity. A strong relationship exists between allograft loss and human leukocyte antigens (HLA) antibodies (Abs). HLA Abs are not the only factor involved in graft loss, as multiple studies have shown that non-HLA antigens are also involved, even when a patient has a good HLA matche and receives standard immunosuppressive therapy. A deeper understanding of other biomarkers is therefore important, as it is likely to lead to better monitoring (and consequent success) of organ transplants. The objective is to fill the void left by extensive reviews that do not often dive this deep into the importance of MICA and NKG2D in allograft acceptance and their partnership in the immune response. There are few papers that explore the relationship between these two protagonists when it comes to kidney transplantation. This is especially true for the role of NKG2D in kidney transplantation. These reasons give a special importance to this review, which aims to be a helpful tool in the hands of researchers in this field.
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Affiliation(s)
- Matilde Risti
- LIGH - Immunogenetics and Histocompatibility Laboratory, Federal University of Paraná , Curitiba , Brazil
| | - Maria da Graça Bicalho
- LIGH - Immunogenetics and Histocompatibility Laboratory, Federal University of Paraná , Curitiba , Brazil
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38
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Isernhagen A, Malzahn D, Bickeböller H, Dressel R. Impact of the MICA-129Met/Val Dimorphism on NKG2D-Mediated Biological Functions and Disease Risks. Front Immunol 2016; 7:588. [PMID: 28018354 PMCID: PMC5149524 DOI: 10.3389/fimmu.2016.00588] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 11/28/2016] [Indexed: 12/19/2022] Open
Abstract
The major histocompatibility complex (MHC) class I chain-related A (MICA) is the most polymorphic non-classical MHC class I gene in humans. It encodes a ligand for NKG2D (NK group 2, member D), an activating natural killer (NK) receptor that is expressed mainly on NK cells and CD8+ T cells. The single-nucleotide polymorphism (SNP) rs1051792 causing a valine (Val) to methionine (Met) exchange at position 129 of the MICA protein is of specific interest. It separates MICA into isoforms that bind NKG2D with high (Met) and low affinities (Val). Therefore, this SNP has been investigated for associations with infections, autoimmune diseases, and cancer. Here, we systematically review these studies and analyze them in view of new data on the functional consequences of this polymorphism. It has been shown recently that the MICA-129Met variant elicits a stronger NKG2D signaling, resulting in more degranulation and IFN-γ production in NK cells and in a faster costimulation of CD8+ T cells than the MICA-129Val variant. However, the MICA-129Met isoform also downregulates NKG2D more efficiently than the MICA-129Val isoform. This downregulation impairs NKG2D-mediated functions at high expression intensities of the MICA-Met variant. These features of the MICA-129Met/Val dimorphism need to be considered when interpreting disease association studies. Particularly, in the field of hematopoietic stem cell transplantation, they help to explain the associations of the SNP with outcome including graft-versus-host disease and relapse of malignancy. Implications for future disease association studies of the MICA-129Met/Val dimorphism are discussed.
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Affiliation(s)
- Antje Isernhagen
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen , Göttingen , Germany
| | - Dörthe Malzahn
- Institute of Genetic Epidemiology, University Medical Center Göttingen , Göttingen , Germany
| | - Heike Bickeböller
- Institute of Genetic Epidemiology, University Medical Center Göttingen , Göttingen , Germany
| | - Ralf Dressel
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, Göttingen, Germany
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39
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Chen R. Bi-directional immuno-modulation by Matrix Metalloproteinase-7 (MMP-7) and A Disintegrin And Metalloproteinase-17 (ADAM-17) as transplantation rejection-tolerance spectrum. RESEARCH IDEAS AND OUTCOMES 2016. [DOI: 10.3897/rio.2.e9268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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40
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Wang WY, Tian W, Zhu F, Liu XX, Li LX, Wang F. MICA,MICBPolymorphisms and Linkage Disequilibrium withHLA-Bin a Chinese Mongolian Population. Scand J Immunol 2016; 83:456-62. [DOI: 10.1111/sji.12437] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 03/22/2016] [Indexed: 11/30/2022]
Affiliation(s)
- W. Y. Wang
- Immunogenetics Research Group; Department of Immunology; College of Basic Medical Sciences; Central South University; Changsha China
| | - W. Tian
- Immunogenetics Research Group; Department of Immunology; College of Basic Medical Sciences; Central South University; Changsha China
- Laboratory of Cellular and Molecular Biology; College of Basic Medical Sciences; Central South University; Changsha China
| | - F.M. Zhu
- HLA typing laboratory; Blood Center of Zhejiang Province; Hangzhou Zhejiang China
- Key Laboratory of Blood Safety Research; Ministry of Health; Hangzhou China
| | - X. X. Liu
- Immunogenetics Research Group; Department of Immunology; College of Basic Medical Sciences; Central South University; Changsha China
| | - L. X. Li
- Immunogenetics Research Group; Department of Immunology; College of Basic Medical Sciences; Central South University; Changsha China
- Laboratory of Cellular and Molecular Biology; College of Basic Medical Sciences; Central South University; Changsha China
| | - F. Wang
- Immunogenetics Research Group; Department of Immunology; College of Basic Medical Sciences; Central South University; Changsha China
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Martinez-Chamorro A, Moreno A, Gómez-García M, Cabello MJ, Martin J, Lopez-Nevot MÁ. MICA*A4 protects against ulcerative colitis, whereas MICA*A5.1 is associated with abscess formation and age of onset. Clin Exp Immunol 2016; 184:323-31. [PMID: 26940143 DOI: 10.1111/cei.12786] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2016] [Indexed: 12/15/2022] Open
Abstract
Ulcerative colitis (UC) is one of the two major forms of inflammatory bowel disease, the aetiology of which remains unknown. Several studies have demonstrated the genetic basis of disease, identifying more than 130 susceptibility loci. The major histocompatibility complex class I chain-related gene A (MICA) is a useful candidate to be involved in UC pathogenesis, because it could be important in recognizing the integrity of the epithelial cell and its response to stress. The aim of this study was to analyse the relationship between polymorphisms in the transmembrane domain of MICA and susceptibility to develop UC. A total of 340 patients with UC and 636 healthy controls were genotyped for MICA transmembrane polymorphism using a polymerase chain reaction (PCR) combined with fluorescent technology. Different MICA alleles were determined depending on the PCR product size. The allele MICA*A4 was less frequent in patients than in controls (P = 0·003; OR = 0·643), and this protective role is higher when it forms haplotype with B*27 (P = 0·002; OR = 0·294). The haplotype HLA-B*52/MICA*A6 was also associated with UC [P = 0·001; odds ratio (OR) = 2·914]. No other alleles, genotypes or haplotypes were related with UC risk. Moreover, MICA*A5.1 is associated independently with abscesses (P = 0·002; OR = 3·096) and its frequency is lower in patients diagnosed between ages 17 and 40 years (P = 0·007; OR = 0·633), meaning an extreme age on onset. No association with location, extra-intestinal manifestations or need for surgery was found.
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Affiliation(s)
| | - A Moreno
- Section of Immunology, Hospital Virgen de las Nieves
| | | | - M J Cabello
- Digestive Section, Hospital Virgen de las Nieves
| | - J Martin
- Institute of Parasitology and Biomedicine López-Neyra, CSIC, Granada, Spain
| | - M Á Lopez-Nevot
- Section of Immunology, Hospital Virgen de las Nieves.,University of Granada
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