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Siemaszko J, Łacina P, Szymczak D, Szeremet A, Majcherek M, Czyż A, Sobczyk-Kruszelnicka M, Fidyk W, Solarska I, Nasiłowska-Adamska B, Skowrońska P, Bieniaszewska M, Tomaszewska A, Basak GW, Giebel S, Wróbel T, Bogunia-Kubik K. Significance of HLA-E and its two NKG2 receptors in development of complications after allogeneic transplantation of hematopoietic stem cells. Front Immunol 2023; 14:1227897. [PMID: 37901227 PMCID: PMC10611459 DOI: 10.3389/fimmu.2023.1227897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/15/2023] [Indexed: 10/31/2023] Open
Abstract
Transplantation of hematopoietic stem cells (HSCT) is a procedure commonly used in treatment of various haematological disorders which is associated with significantly improved survival rates. However, one of its drawbacks is the possibility of development of post-transplant complications, including acute and chronic graft-versus-host disease (GvHD) or CMV infection. Various studies suggested that NK cells and their receptors may affect the transplant outcome. In the present study, patients and donors were found to significantly differ in the distribution of the NKG2A rs7301582 genetic variants - recipients carried the C allele more often than their donors (0.975 vs 0.865, p<0.0001). Increased soluble HLA-E (sHLA-E) levels detected in recipients' serum 30 days after transplantation seemed to play a prognostic and protective role. It was observed that recipients with higher sHLA-E levels were less prone to chronic GvHD (11.65 vs 6.33 pg/mL, p=0.033) or more severe acute GvHD grades II-IV (11.07 vs 8.04 pg/mL, p=0.081). Our results also showed an unfavourable role of HLA-E donor-recipient genetic incompatibility in CMV infection development after transplantation (OR=5.92, p=0.014). Frequencies of NK cells (both CD56dim and CD56bright) expressing NKG2C were elevated in recipients who developed CMV, especially 30 and 90 days post-transplantation (p<0.03). Percentages of NKG2C+ NK cells lacking NKG2A expression were also increased in these patients. Moreover, recipients carrying a NKG2C deletion characterized with decreased frequency of NKG2C+ NK cells (p<0.05). Our study confirms the importance of NK cells in the development of post-transplant complications and highlights the effect of HLA-E and NKG2C genetic variants, sHLA-E serum concentration, as well as NKG2C surface expression on transplant outcome.
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Affiliation(s)
- Jagoda Siemaszko
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Piotr Łacina
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Donata Szymczak
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Agnieszka Szeremet
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Maciej Majcherek
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Anna Czyż
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Małgorzata Sobczyk-Kruszelnicka
- Department of Bone Marrow Transplantation and Hematology-Oncology, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Wojciech Fidyk
- Department of Bone Marrow Transplantation and Hematology-Oncology, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Iwona Solarska
- Institute of Hematology and Blood Transfusion Medicine, Warsaw, Poland
| | | | | | - Maria Bieniaszewska
- Department of Hematology and Transplantology, Medical University of Gdansk, Gdansk, Poland
| | - Agnieszka Tomaszewska
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Grzegorz W. Basak
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Sebastian Giebel
- Department of Bone Marrow Transplantation and Hematology-Oncology, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Gliwice, Poland
| | - Tomasz Wróbel
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Katarzyna Bogunia-Kubik
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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Siemaszko J, Ussowicz M, Rybka B, Ryczan-Krawczyk R, Kałwak K, Bogunia-Kubik K. The impact of NKG2A and NKG2D receptors and HLA-E and MICA ligands polymorphisms on post-transplant complications after paediatric allogeneic HSCT: a single-centre experience. Front Genet 2023; 14:1186123. [PMID: 37351346 PMCID: PMC10282657 DOI: 10.3389/fgene.2023.1186123] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/16/2023] [Indexed: 06/24/2023] Open
Abstract
Introduction: Natural Killer cells are the first subpopulation of lymphocytes that reconstitute after allogeneic haematopoietic stem cell transplantation (HSCT). Their activity is regulated by various receptor-ligand interactions, including stimulation of the activating NKG2D receptor by the MICA molecule, and inhibitory NKG2A receptor interacting with the HLA-E. In this study the research effort focused on the effect of selected NKG2A and NKG2D receptors and their ligands (HLA-E and MICA molecules) polymorphisms that may affect the pathomechanisms of post-transplant complications after HSCT in children. Methods: One hundred donor-recipient pairs from a single paediatric transplantation centre were investigated. Altogether six single nucleotide substitutions (NKG2A rs7301582; NKG2D rs1049174, rs1154831; HLA-E rs1264457; MICA rs1051792, rs1063635) were genotyped, and the influence of polymorphisms was analysed on acute and chronic graft-versus-host disease (GvHD), cytomegalovirus (CMV) infection incidence, disease relapse and survival. Results: The distribution of the evaluated polymorphisms did not differ between patients and their donors. The results showed a significant influence of HLA-E rs1264457 polymorphism in patients' HLA-E*01:01 allele, which was associated with increased risk of CMV infection (p = 0.050), especially in children positive for CMV IgG before transplantation (p = 0.001). Furthermore, the effect of HLA-E*01:01 allele on CMV infections was more evident in children above the age of 7 years (p = 0.031). Strong tendencies (0.05 < p < 0.10) towards association with the risk of acute GvHD were also observed for the NKG2A or MICA polymorphisms of the recipients. In addition, NKG2D rs1154831 AA and MICA rs1063635 GG might play a protective role as they were not present in any recipient who died after transplantation. Conclusion: In summary, there is emerging evidence that genotyping results of NKG2 receptors and their ligands, may have prognostic value for the outcome of paediatric allogeneic HSCT, but more extensive studies performed on larger groups of donors and transplant recipients are required to confirm these observations.
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Affiliation(s)
- Jagoda Siemaszko
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Marek Ussowicz
- Department and Clinic of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wroclaw Medical University, Wroclaw, Poland
| | - Blanka Rybka
- Department and Clinic of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wroclaw Medical University, Wroclaw, Poland
| | - Renata Ryczan-Krawczyk
- Department and Clinic of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wroclaw Medical University, Wroclaw, Poland
| | - Krzysztof Kałwak
- Department and Clinic of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wroclaw Medical University, Wroclaw, Poland
| | - Katarzyna Bogunia-Kubik
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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Hosseini E, Sarraf Kazerooni E, Azarkeivan A, Sharifi Z, Shahabi M, Ghasemzadeh M. HLA-E*01:01 allele is associated with better response to anti-HCV therapy while homozygous status for HLA-E*01:03 allele increases the resistance to anti-HCV treatments in frequently transfused thalassemia patients. Hum Immunol 2022; 83:556-563. [PMID: 35570067 DOI: 10.1016/j.humimm.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 04/23/2022] [Accepted: 04/24/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND HLA-E binding to NKG2A/CD94 induces inhibitory signals that modulate NK cells cytotoxicity against infected targets. HCV-derived peptides stabilize HLA-E molecule that favours its higher expression. However, HLA-E stability and expression vary in different genotypes where the presence of HLA-E*01:03 allele is associated with higher HLA-E expression on targets that enhances NK cells inhibition and increases the chance of virus to escape from innate immune system. Here, we aimed to investigate whether HLA-E polymorphism affects HCV infection status or its treatment in major thalassemia patients who are more vulnerable to hepatitis C. METHODS AND MATERIALS Study included 89 cases of major thalassemia positive for HCV-antibody; of those 17 patients were negative for HCV-PCR (spontaneously cleared) and 72 patients were HCV-PCR positive (persistent hepatitis under different anti-viral treatment). 16 major thalassemia patients without hepatitis, negative for HCV-antibody were also considered as patients control group. Genomic DNAs extracted from whole bloods were genotyped for HLA-E locus using a sequence specific primer-PCR strategy. RESULTS In thalassemia patients, HLA-E*01:03 allele increased susceptibility to HCV infection [p = 0.02; 4.74(1.418-15.85)]. In addition, HLA-E*01:03/*01:03 genotype predicted more resistance to HCV treatment compared to other genotypes [p = 0.037; 3.5(1.1-11.4)]. In other words, we found that the presence of HLA-E*01:01 allele favors better response to anti-HCV therapy [p = 0.037; 3.5(1.1-11.4)]. CONCLUSION From a mechanistic point of view, the associations between HLA-E polymorphisms and susceptibility to HCV infection or its therapeutic resistance in thalassemia patients may suggest potential roles for the innate and adaptive immune responses to this infection, which are manifested by the acts of HLA-E - NKG2A/CD94 axis in the modulation of NK cell inhibitory function as well as HLA-E associated CD8+ T cell cytolytic activity against HCV, respectively. Notably, from a clinical point of view, paying attention to these associations may not only be useful in increasing the effectiveness of current anti-HCV regimens comprising direct acting antivirals (DAAs) in more complicated patients, but may also suggest antiviral prophylaxis for patients more vulnerable to HCV infection.
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Affiliation(s)
- Ehteramolsadat Hosseini
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Ehsan Sarraf Kazerooni
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Azita Azarkeivan
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran; Iranian Blood Transfusion Organization, Thalassemia Clinic, Tehran, Iran
| | - Zohreh Sharifi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Majid Shahabi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mehran Ghasemzadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
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Neuchel C, Fürst D, Tsamadou C, Schrezenmeier H, Mytilineos J. Extended loci histocompatibility matching in HSCT-Going beyond classical HLA. Int J Immunogenet 2021; 48:299-316. [PMID: 34109752 DOI: 10.1111/iji.12545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/26/2021] [Accepted: 05/17/2021] [Indexed: 12/20/2022]
Abstract
Unrelated haematopoietic stem cell transplantation (HSCT) has evolved from an experimental protocol to a potentially curative first-line treatment in a variety of haematologic malignancies. The continuous refinement of treatment protocols and supportive care paired with ongoing achievements in the technological field of histocompatibility testing enabled this transformation. Without a doubt, HLA matching is still the foremost criterion for donor selection in unrelated HSCT. However, HSCT-related treatment complications still occur frequently, often resulting in patients suffering severely or even dying as a consequence of such complications. Current literature indicates that other immune system modulating factors may play a role in the setting of HSCT. In this review, we discuss the current clinical evidence of a possible influence of nonclassical HLA antigens HLA-E, HLA-F, and HLA-G as well as the HLA-like molecules MICA and MICB, in HSCT.
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Affiliation(s)
- Christine Neuchel
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Daniel Fürst
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Chrysanthi Tsamadou
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Hubert Schrezenmeier
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Joannis Mytilineos
- ZKRD - Zentrales Knochenmarkspender-Register für Deutschland, German National Bone Marrow Donor Registry, Ulm, Germany
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5
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Bogunia-Kubik K, Łacina P. Non-KIR NK cell receptors: Role in transplantation of allogeneic haematopoietic stem cells. Int J Immunogenet 2020; 48:157-171. [PMID: 33352617 DOI: 10.1111/iji.12523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/29/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022]
Abstract
Natural killer (NK) cells are of major significance in patients after allogeneic haematopoietic stem cell transplantation (HSCT). They are the first subset of lymphocytes to appear in peripheral blood after transplantation and play an important role in the immune responses against cancer and viral infections. The function of NK cells is controlled by various surface receptors, of which type I integral proteins with immunoglobulin-like domains (killer-cell immunoglobulin-like receptors, KIRs) have been the most extensively studied. The present review focuses on less studied NK cell receptors, such as type II integral proteins with lectin-like domains (CD94/NKG2, NKG2D), natural cytotoxicity receptors (NCRs), immunoglobulin-like transcripts (ILTs) and their ligands. Their potential role in patients with haematological disorders subjected to HSC transplant procedure in the context of post-transplant complications such as viral reactivation and acute graft-versus-host disease (GvHD) will be presented and discussed.
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Affiliation(s)
- Katarzyna Bogunia-Kubik
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Piotr Łacina
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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6
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de Miranda BLM, Gelmini GF, Risti M, Hauer V, da Silva JS, Roxo VMMS, Bicalho MDG, Malheiros D. HLA-E genotyping and its relevance in kidney transplantation outcome. HLA 2020; 95:457-464. [PMID: 31950670 DOI: 10.1111/tan.13806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/29/2019] [Accepted: 01/14/2020] [Indexed: 02/05/2023]
Abstract
HLA-E, a class I nonclassical HLA molecule, is expressed in all tissues and is involved in the regulation of both innate (by interaction with the CD94/NKG2 receptor expressed mainly in NK cells) and adaptive immunity (by interaction with T CD8+ cells), suggesting a possible role in the solid organ transplantation context. Transplanted patients with chronic kidney disease and their respective donors (N = 107 pairs) were genotyped for exons 2 and 3 of the HLA-E locus by sequence-based typing (SBT). Groups' genotype frequencies were compared regarding episodes of clinical rejection by global G test, and binary logistic regression was made to demonstrate the contribution of genetic variables vs epidemiological variables. Comparisons of donors' genotype frequencies showed significant differences (P = .0230), revealing a protective profile of E*01:01/*01:01 compared to the other genotypes (P = .0099; OR = 0.3088; CI [95%] = 0.1333-0.7157). The same happened when the aforementioned genotype was combined with the E*01:01/*01:01 recipients' genotype (P = .0065; OR = 0.1760; CI [95%] = 0.0517-0.5987). A binary logistic regression analysis was performed, and, of all variables considered, only two were included in the resulting model (P = .007; R2 Cox and Snell = 0.243; R2 Nagelkerke = 0.328)- "End-Stage Renal Disease" and "HLA class II Mismatches." A protective profile (E*01:01/*01:01) was observed between the recipients and donors, suggesting a possible impact of the HLA-E genotype in rejection episodes.
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Affiliation(s)
- Bruna L M de Miranda
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Geórgia F Gelmini
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Matilde Risti
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Vanessa Hauer
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - José Samuel da Silva
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Valéria M M S Roxo
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Maria da Graça Bicalho
- Laboratório de Imunogenética e Histocompatibilidade do Departamento de Genética da Universidade Federal do Paraná (UFPR), Curitiba, Brazil
| | - Danielle Malheiros
- Laboratório de Genética Molecular Humana do Departamento de Genética da Universidade Federal do Paraná, Curitiba, Brazil
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7
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Lucas JAM, Hayhurst JD, Turner TR, Gymer AW, Leen G, Robinson J, Marsh SGE, Mayor NP. Single molecule real-time DNA sequencing of the full HLA-E gene for 212 reference cell lines. HLA 2020; 95:561-572. [PMID: 32227678 DOI: 10.1111/tan.13882] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 01/19/2023]
Abstract
We have developed a genotyping assay that produces fully phased, unambiguous HLA-E genotyping using Pacific Biosciences' single molecule real-time DNA sequencing. In total 212 cell lines were genotyped, including the panel of 107 established at the 10th International Histocompatibility Workshop. Our results matched the previously known HLA-E genotype in 94 (44.3%) cell lines, in all cases either improving or equalling previous genotyping resolution. Three (1.4%) cells had discrepant HLA-E genotyping data and 115 (54.2%) had no previous HLA-E data. The HLA-E genotypes for four (1.9%) cell lines resulted in a change of zygosity by identifying two distinct haplotypes. We discovered eight novel HLA-E alleles, extended the known reference sequence of seven and confirmed the existence of a further 10.
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Affiliation(s)
- Jonathan A M Lucas
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
| | - James D Hayhurst
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
| | - Thomas R Turner
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,UCL Cancer Institute, Royal Free Campus, London, United Kingdom
| | - Arthur W Gymer
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
| | - Gayle Leen
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,UCL Cancer Institute, Royal Free Campus, London, United Kingdom
| | - James Robinson
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,UCL Cancer Institute, Royal Free Campus, London, United Kingdom
| | - Steven G E Marsh
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,UCL Cancer Institute, Royal Free Campus, London, United Kingdom
| | - Neema P Mayor
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom.,UCL Cancer Institute, Royal Free Campus, London, United Kingdom
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8
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Kordelas L, Schwich E, Lindemann M, Heinemann FM, Buttkereit U, Horn PA, Beelen DW, Rebmann V. Decreased Soluble Human Leukocyte Antigen E Levels in Patients After Allogeneic Hematopoietic Stem Cell Transplantation Are Associated With Severe Acute and Extended Chronic Graft-versus-Host Disease and Inferior Overall Survival. Front Immunol 2020; 10:3027. [PMID: 31998310 PMCID: PMC6966962 DOI: 10.3389/fimmu.2019.03027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/10/2019] [Indexed: 12/13/2022] Open
Abstract
HLA-E is a member of the non-classical HLA molecules and by interaction with activating or inhibitory receptors of NK and T cells, HLA-E can lead to immune activation or suppression context-dependently. Recently, the non-classical HLA molecules gain more attention in the setting of allogeneic hematopoietic stem cell transplantation (HSCT). Most studies so far have focused on the two most frequent genotypes (HLA-E*01:01 and HLA-E*01:03) and investigated their potential association with clinical endpoints of HSCT, like graft-versus-host disease (GvHD), relapse, and overall survival (OS). However, these studies have produced inconsistent results regarding the role of HLA-E and the clinical endpoints after HSCT. We therefore here investigate the amount of soluble HLA-E (sHLA-E) in patients following HSCT and relate this to the clinical endpoints after HSCT. In univariate analysis, we observe a significant association of reduced levels of sHLA-E with severe acute GvHD, extended chronic GvHD and with inferior OS. Using receiver operating characteristic analyses specific thresholds obtained 1, 2, or 3 month(s) after HSCT were identified being indicative for severe acute GvHD, extended chronic GvHD, or inferior OS. In sub-group analyses, this effect can be confirmed in patients not treated with ATG, but is derogated in ATG-treated patients. Notably, we could not detect any association of the course of sHLA-E levels post-HSCT with the three most frequent HLA-E genotypes (HLA-E*01:03/*01:03, HLA-E*01:01/*01:01, HLA-E*01:01/*01:03). However, with regard to 5-year-OS there was an association of HLA-E*01:03 homozygosity with inferior OS. Taking ATG-treatment, recipient and donor HLA-E genotypes into consideration among other well-known risk factors, the sHLA-E status was found as an independent predictor for the development of extended cGvHD and inferior OS following HSCT irrespective of the sHLA-E thresholds. These findings shed some light on the possible impact of reduced sHLA-E levels after HSCT on GvHD and OS. Thus, sHLA-E appears to be a novel promising candidate for the prediction of clinical HSCT outcome with regards to extended cGvHD and OS.
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Affiliation(s)
- Lambros Kordelas
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen, Germany
| | - Esther Schwich
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Monika Lindemann
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Falko M. Heinemann
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Ulrike Buttkereit
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen, Germany
| | - Peter A. Horn
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Dietrich W. Beelen
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen, Germany
| | - Vera Rebmann
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
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9
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Tsamadou C, Fürst D, Wang T, He N, Lee SJ, Spellman SR, Fleischhauer K, Hsu KC, Paczesny S, Verneris MR, Schrezenmeier H, Mytilineos J. Donor HLA-E Status Associates with Disease-Free Survival and Transplant-Related Mortality after Non In Vivo T Cell-Depleted HSCT for Acute Leukemia. Biol Blood Marrow Transplant 2019; 25:2357-2365. [PMID: 31425756 PMCID: PMC7050288 DOI: 10.1016/j.bbmt.2019.08.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/30/2019] [Accepted: 08/08/2019] [Indexed: 01/22/2023]
Abstract
Previous studies have suggested that HLA-E may have a significant role in the outcome of matched unrelated hematopoietic stem cell transplantation (HSCT), especially for patients with acute leukemia. We used Center for International Blood and Marrow Transplant Research data and samples of 1840 adult patients with acute leukemia and their 10/10 HLA-matched unrelated donors to investigate the impact of HLA-E matching status as well as of donor/recipient (D/R) HLA-E genotype on post-HSCT outcome. Both patients and donors were HLA-E genotyped by next-generation sequencing. All patients received their first transplant in complete remission between 2000 and 2015. Median follow-up time was 90 months. Overall survival, disease-free survival (DFS), transplant-related mortality (TRM), and relapse incidence were primary endpoints with statistical significance set at .01. D/R HLA-E genotype analysis revealed a significant association of donor HLA-E*01:03/01:03 genotype with DFS (hazard ratio [HR] = 1.35, P = .0006) and TRM (HR = 1.41, P = .0058) in patients who received T cell replete (ie, without in vivo T cell depletion) transplants (n = 1297). As for D/R HLA-E matching, we did not identify any significant effect on any of the clinical outcome endpoints. In conclusion, this is the largest study to date reporting an improvement of DFS and TRM after matched unrelated HSCT by avoidance of HLA-E*01:03 homozygous donors in patients transplanted with T cell replete grafts for acute leukemia.
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Affiliation(s)
- Chrysanthi Tsamadou
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany; Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Daniel Fürst
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany; Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Tao Wang
- Center for International Blood and Marrow Transplant Research and Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Naya He
- Center for International Blood and Marrow Transplant Research and Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Stephanie J Lee
- Center for International Blood and Marrow Transplant Research and Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Stephen R Spellman
- Center for International Blood and Marrow Transplant Research, Minneapolis, Minnesota; National Marrow Donor Program, Minneapolis, Minnesota
| | | | | | - Sophie Paczesny
- Department of Pediatrics-Hematology/Oncology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Michael R Verneris
- Department of Pediatrics, Hematology/Oncology/BMT, University of Colorado, Denver, Colorado
| | - Hubert Schrezenmeier
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany; Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Joannis Mytilineos
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany; Institute of Transfusion Medicine, University of Ulm, Ulm, Germany.
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10
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Kanevskiy L, Erokhina S, Kobyzeva P, Streltsova M, Sapozhnikov A, Kovalenko E. Dimorphism of HLA-E and its Disease Association. Int J Mol Sci 2019; 20:ijms20215496. [PMID: 31690066 PMCID: PMC6862560 DOI: 10.3390/ijms20215496] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/25/2019] [Accepted: 11/01/2019] [Indexed: 02/07/2023] Open
Abstract
HLA-E is a nonclassical member of the major histocompatibility complex class I gene locus. HLA-E protein shares a high level of homology with MHC Ia classical proteins: it has similar tertiary structure, associates with β2-microglobulin, and is able to present peptides to cytotoxic lymphocytes. The main function of HLA-E under normal conditions is to present peptides derived from the leader sequences of classical HLA class I proteins, thus serving for monitoring of expression of these molecules performed by cytotoxic lymphocytes. However, opposite to multiallelic classical MHC I genes, HLA-E in fact has only two alleles—HLA-E*01:01 and HLA-E*01:03—which differ by one nonsynonymous amino acid substitution at position 107, resulting in an arginine in HLA-E*01:01 (HLA-ER) and glycine in HLA-E*01:03 (HLA-EG). In contrast to HLA-ER,HLA-EG has higher affinity to peptide, higher surface expression, and higher thermal stability of the corresponding protein, and it is more ancient than HLA-ER, though both alleles are presented in human populations in nearly equal frequencies. In the current review, we aimed to uncover the reason of the expansion of the younger allele, HLA-ER, by analysis of associations of both HLA-E alleles with a number of diseases, including viral and bacterial infections, cancer, and autoimmune disorders.
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Affiliation(s)
- Leonid Kanevskiy
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
| | - Sofya Erokhina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
| | - Polina Kobyzeva
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
| | - Maria Streltsova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
| | - Alexander Sapozhnikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
| | - Elena Kovalenko
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10, Miklukho-Maklaya St., Moscow 117997, Russia.
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11
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Xu YP, Wieten L, Wang SX, Cai Y, Olieslagers T, Zhang L, He LM, Tilanus MGJ, Hong WX. Clinical significance of HLA-E genotype and surface/soluble expression levels between healthy individuals and patients with acute leukemia. Leuk Lymphoma 2019; 60:208-215. [PMID: 29969046 DOI: 10.1080/10428194.2018.1474521] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/03/2018] [Accepted: 04/30/2018] [Indexed: 01/09/2023]
Abstract
Human leukocyte antigen (HLA)-E is a nonclassical HLA molecule with limited polymorphisms. Genotype frequency and expression of HLA-E were examined here for the first time in acute leukemia patients and healthy controls. The frequency of HLA-E*01:03/*01:03 individuals was significantly higher (p = .008, OR = 1.845), while the frequency of HLA-E*01:01/*01:01 individuals was much lower in the patient group (p = .002, OR = .363) than in control group. The surface expression on HLA-E*01:03/*01:03 individuals was found to be significantly higher than on HLA-E*01:01/*01:01 individuals in both of acute leukemia and control groups, but no significant difference was observed between the corresponding genotypes in two groups. However, the level of expression of soluble HLA-E is significantly higher in patients than in the control group, but there was no genotype-specific expression in either group. These findings indicate that soluble HLA-E secretion and HLA-E*01:03/*01:03 genotype that brings higher surface expression might play important roles in the mechanisms underlying tumor escape in acute leukemia.
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Affiliation(s)
- Yun-Ping Xu
- a Immunogenetics Laboratory , Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center , Shenzhen , China
- b Transplantation Immunology, Tissue Typing Laboratory , Maastricht University Medical Center , Maastricht , The Netherlands
| | - Lotte Wieten
- b Transplantation Immunology, Tissue Typing Laboratory , Maastricht University Medical Center , Maastricht , The Netherlands
| | - Song-Xing Wang
- a Immunogenetics Laboratory , Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center , Shenzhen , China
| | - Yun Cai
- c Department of Hematopathology , Shenzhen Second People's Hospital , Shenzhen , China
| | - Timo Olieslagers
- b Transplantation Immunology, Tissue Typing Laboratory , Maastricht University Medical Center , Maastricht , The Netherlands
| | - Li Zhang
- a Immunogenetics Laboratory , Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center , Shenzhen , China
| | - Liu-Mei He
- a Immunogenetics Laboratory , Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center , Shenzhen , China
| | - Marce G J Tilanus
- b Transplantation Immunology, Tissue Typing Laboratory , Maastricht University Medical Center , Maastricht , The Netherlands
| | - Wen-Xu Hong
- a Immunogenetics Laboratory , Shenzhen Institute of Transfusion Medicine, Shenzhen Blood Center , Shenzhen , China
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12
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Tsamadou C, Fürst D, Vucinic V, Bunjes D, Neuchel C, Mytilineos D, Gramatzki M, Arnold R, Wagner EM, Einsele H, Müller C, Schrezenmeier H, Mytilineos J. Human leukocyte antigen-E mismatch is associated with better hematopoietic stem cell transplantation outcome in acute leukemia patients. Haematologica 2017; 102:1947-1955. [PMID: 28883078 PMCID: PMC5664399 DOI: 10.3324/haematol.2017.169805] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 09/04/2017] [Indexed: 01/18/2023] Open
Abstract
The immunomodulatory role of human leukocyte antigen (HLA)-E in hematopoietic stem cell transplantation (HSCT) has not been extensively investigated. To this end, we genotyped 509 10/10 HLA unrelated transplant pairs for HLA-E, in order to study the effect of HLA-E as a natural killer (NK)-alloreactivity mediator on HSCT outcome in an acute leukemia (AL) setting. Overall survival (OS), disease free survival (DFS), relapse incidence (RI) and non-relapse mortality (NRM) were set as endpoints. Analysis of our data revealed a significant correlation between HLA-E mismatch and improved HSCT outcome, as shown by both univariate (53% vs 38%, P=0.002, 5-year OS) and multivariate (hazard ratio (HR)=0.63, confidence interval (CI) 95%=0.48-0.83, P=0.001) analyses. Further subgroup analysis demonstrated that the positive effect of HLA-E mismatch was significant and pronounced in advanced disease patients (n=120) (5-year OS: 50% vs 18%, P=0.005; HR=0.40, CI 95%=0.22-0.72, P=0.002; results from univariate and multivariate analyses, respectively). The study herein is the first to report an association between HLA-E incompatibility and improved post-transplant prognosis in AL patients who have undergone matched unrelated HSCT. Combined NK and T cell HLA-E-mediated mechanisms may account for the better outcomes observed. Notwithstanding the necessity for in vitro and confirmational studies, our findings highlight the clinical relevance of HLA-E matching and strongly support prospective HLA-E screening upon donor selection for matched AL unrelated HSCTs.
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MESH Headings
- Adolescent
- Adult
- Aged
- Alleles
- Bone Marrow Transplantation
- Female
- Genotype
- Hematopoietic Stem Cell Transplantation/adverse effects
- Hematopoietic Stem Cell Transplantation/methods
- Histocompatibility Antigens Class I/genetics
- Histocompatibility Antigens Class I/immunology
- Histocompatibility Testing
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/mortality
- Leukemia, Myeloid, Acute/therapy
- Male
- Middle Aged
- Potassium Channels, Inwardly Rectifying/genetics
- Prognosis
- Survival Analysis
- Transplantation Conditioning
- Transplantation, Homologous
- Treatment Outcome
- Young Adult
- HLA-E Antigens
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Affiliation(s)
- Chrysanthi Tsamadou
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg - Hessen, and University Hospital Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Germany
| | - Daniel Fürst
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg - Hessen, and University Hospital Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Germany
| | - Vladan Vucinic
- Department of Hematology/Oncology, University of Leipzig, Germany
| | - Donald Bunjes
- Department of Internal Medicine III, University of Ulm, Germany
| | - Christine Neuchel
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg - Hessen, and University Hospital Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Germany
| | | | - Martin Gramatzki
- Division of Stem Cell Transplantation and Immunotherapy, 2 Department of Medicine, University of Kiel, Germany
| | - Renate Arnold
- Hematology/Oncology Department, Charité Campus Virchow-Klinikum, Berlin, Germany
| | - Eva Maria Wagner
- Department of Internal Medicine III, Johannes Gutenberg-University Mainz, Germany
| | - Hermann Einsele
- Department of Internal Medicine II, University Hospital Würzburg, Germany
| | - Carlheinz Müller
- ZKRD - Zentrale Knochenmarkspender-Register für Deutschland, German National Bone Marrow Donor Registry, Germany
- DRST - German Registry for Stem Cell Transplantation, Ulm, Germany
| | - Hubert Schrezenmeier
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg - Hessen, and University Hospital Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Germany
| | - Joannis Mytilineos
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg - Hessen, and University Hospital Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Germany
- DRST - German Registry for Stem Cell Transplantation, Ulm, Germany
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13
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Kordelas L, Steckel NK, Horn PA, Beelen DW, Rebmann V. The Activating NKG2C Receptor Is Significantly Reduced in NK Cells after Allogeneic Stem Cell Transplantation in Patients with Severe Graft-versus-Host Disease. Int J Mol Sci 2016; 17:E1797. [PMID: 27801784 PMCID: PMC5133798 DOI: 10.3390/ijms17111797] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/18/2016] [Accepted: 10/20/2016] [Indexed: 11/21/2022] Open
Abstract
Natural killer (NK) cells play a central role in the innate immune system. In allogeneic stem cell transplantation (alloSCT), alloreactive NK cells derived by the graft are discussed to mediate the elimination of leukemic cells and dendritic cells in the patient and thereby to reduce the risk for leukemic relapses and graft-versus-host reactions. The alloreactivity of NK cells is determined by various receptors including the activating CD94/NKG2C and the inhibitory CD94/NKG2A receptors, which both recognize the non-classical human leukocyte antigen E (HLA-E). Here we analyze the contribution of these receptors to NK cell alloreactivity in 26 patients over the course of the first year after alloSCT due to acute myeloid leukemia, myelodysplastic syndrome and T cell Non-Hodgkin-Lymphoma. Our results show that NK cells expressing the activating CD94/NKG2C receptor are significantly reduced in patients after alloSCT with severe acute and chronic graft-versus-host disease (GvHD). Moreover, the ratio of CD94/NKG2C to CD94/NKG2A was reduced in patients with severe acute and chronic GvHD after receiving an HLA-mismatched graft. Collectively, these results provide evidence for the first time that CD94/NKG2C is involved in GvHD prevention.
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MESH Headings
- Adult
- Aged
- Female
- Graft vs Host Disease/immunology
- Graft vs Host Disease/pathology
- Graft vs Host Disease/prevention & control
- Histocompatibility Antigens Class I/immunology
- Humans
- Immunity, Innate/genetics
- Killer Cells, Natural/immunology
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/pathology
- Leukemia, Myeloid, Acute/therapy
- Lymphoma, Non-Hodgkin/immunology
- Lymphoma, Non-Hodgkin/pathology
- Lymphoma, Non-Hodgkin/therapy
- Male
- Middle Aged
- Myelodysplastic Syndromes/immunology
- Myelodysplastic Syndromes/pathology
- Myelodysplastic Syndromes/therapy
- NK Cell Lectin-Like Receptor Subfamily C/biosynthesis
- NK Cell Lectin-Like Receptor Subfamily C/immunology
- NK Cell Lectin-Like Receptor Subfamily D/biosynthesis
- NK Cell Lectin-Like Receptor Subfamily D/immunology
- Stem Cell Transplantation/adverse effects
- Transplantation, Homologous/adverse effects
- HLA-E Antigens
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Affiliation(s)
- Lambros Kordelas
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen 45147, Germany.
| | - Nina-Kristin Steckel
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen 45147, Germany.
| | - Peter A Horn
- Institute for Transfusion Medicine, University Hospital Essen, Essen 45147, Germany.
| | - Dietrich W Beelen
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen 45147, Germany.
| | - Vera Rebmann
- Institute for Transfusion Medicine, University Hospital Essen, Essen 45147, Germany.
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14
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Di Cristofaro J, Pelardy M, Loundou A, Basire A, Gomez C, Chiaroni J, Thomas P, Reynaud-Gaubert M, Picard C. HLA-E(⁎)01:03 Allele in Lung Transplant Recipients Correlates with Higher Chronic Lung Allograft Dysfunction Occurrence. J Immunol Res 2016; 2016:1910852. [PMID: 27493971 PMCID: PMC4967441 DOI: 10.1155/2016/1910852] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/08/2016] [Accepted: 05/19/2016] [Indexed: 11/24/2022] Open
Abstract
Lung transplantation (LTx) is a valid therapeutic option for selected patients with end-stage lung disease. HLA-E seems to play a major role in the immune response to different viral infections and to affect transplantation outcome, in Hematopoietic Stem Cell Transplantation, for example. Two nonsynonymous alleles, HLA-E(⁎)01:01 and HLA-E(⁎)01:03, have functional differences, involving relative peptide affinity, cell surface expression, and potential lytic activity of NK cells. The aim of this retrospective study was to determine the impact of these two alleles for LTx recipients on anti-HLA alloimmunization risk, overall survival, and chronic rejection (CLAD). HLA-E was genotyped in 119 recipients who underwent LTx from 1998 to 2010 in a single transplantation center. In univariate analysis, both HLA-E homozygous states were associated with impaired overall survival compared to heterozygous HLA-E alleles (p = 0.01). In multivariate analysis, HLA-E(⁎)01:03 allele showed increased CLAD occurrence when compared to homozygous HLA-E(⁎)01:01 status (HR: 3.563 (CI 95%, 1.016-12), p = 0.047). HLA-E allele did not affect pathogen infection or the production of de novo DSA. This retrospective study shows an uninvestigated, deleterious association of HLA-E alleles with LTx and requires verification using a larger cohort.
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Affiliation(s)
| | - Mathieu Pelardy
- Immunogenetics Laboratory, EFS-Alpes Méditerranée, 13005 Marseille, France
| | - Anderson Loundou
- Department of Public Health, EA 3279 Research Unit, Marseille University Hospital, Aix-Marseille University, Marseille, France
| | - Agnès Basire
- Immunogenetics Laboratory, EFS-Alpes Méditerranée, 13005 Marseille, France
| | - Carine Gomez
- Service de Pneumologie, Hôpital Nord, 13015 Marseille, France
| | - Jacques Chiaroni
- CNRS, EFS, ADES UMR 7268, Aix-Marseille Université, 13916 Marseille, France
| | - Pascal Thomas
- Service de Chirurgie Thoracique, Hôpital Nord, 13015 Marseille, France
| | | | - Christophe Picard
- CNRS, EFS, ADES UMR 7268, Aix-Marseille Université, 13916 Marseille, France
- Immunogenetics Laboratory, EFS-Alpes Méditerranée, 13005 Marseille, France
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15
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Prasetyo AA, Dharmawan R, Raharjo I, Hudiyono. Human Leukocyte Antigen-E Alleles are Associated with Hepatitis C Virus, Torque Teno Virus, and Toxoplasma Co-infections but are not Associated with Hepatitis B Virus, Hepatitis D Virus, and GB Virus C Co-infections in Human Immunodeficiency Virus Patients. J Glob Infect Dis 2016; 8:75-81. [PMID: 27293362 PMCID: PMC4879794 DOI: 10.4103/0974-777x.182121] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Context: Data regarding the distribution of Human Leukocyte Antigen (HLA)-E alleles and their association with blood-borne pathogen infections/co-infections are limited for many populations, including Indonesia. Aims: The aim of this study was to analyze the association between HLA-E allelic variants and infection with blood-borne pathogens such as hepatitis B virus (HBV), hepatitis C virus (HCV), hepatitis D virus (HDV), torque teno virus (TTV), GB virus C (GBV-C), and Toxoplasma gondii (T. gondii) in Indonesian Javanese human immunodeficiency virus (HIV) patients. Settings and Design: A total of 320 anti-HIV-positive blood samples were analyzed for HBV, HCV, HDV, TTV, GBV-C, and T. gondii infection status and its association with HLA-E allelic variants. Materials and Methods: Nucleic acid was extracted from plasma samples and used for the molecular detection of HBV DNA, HCV RNA, HDV RNA, TTV DNA, and GBV-C RNA, whereas hepatitis B surface antigen, anti-HCV, immunoglobulin M and G (IgM and IgG) anti-T. gondii were detected through serological testing. The blood samples were genotyped for HLA-E loci using a sequence-specific primer-polymerase chain reaction. Statistical Analysis Used: Either the Chi-square or Fisher's exact test was performed to analyze the frequency of HLA-E alleles and blood-borne pathogen infections in the population. Odds ratios (ORs) were calculated to measure the association between the antibodies found and the participants’ possible risk behaviors. A logistic regression analysis was used to assess the associations. Results: HLA-E*101/0101 was associated with HCV/TTV co-infection (adjusted OR [aOR]: 3.5; 95% confidence interval [CI]: 1.156-10.734; P = 0.027) and IgM/IgG anti-Toxo positivity (aOR: 27.0; 95% CI: 3.626-200.472; P = 0.001). HLA-E*103/0103 was associated with TTV co-infection (aOR: 2.7; 95% CI: 1.509-4.796; P = 0.001). Conclusions: HLA-E alleles in Indonesian Javanese HIV patients were found to be associated with HCV, TTV, and toxoplasma co-infections.
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Affiliation(s)
- Afiono Agung Prasetyo
- A-IGIC (A-Infection, Genomic, Immunology & Cancer) Research Group, Sutami 36A, Surakarta, Indonesia; Department of Microbiology, Faculty of Medicine, Sutami 36A, Surakarta, Indonesia; Center of Biotechnology and Biodiversity Research and Development, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, Indonesia
| | - Ruben Dharmawan
- A-IGIC (A-Infection, Genomic, Immunology & Cancer) Research Group, Sutami 36A, Surakarta, Indonesia; Department of Parasitology, Faculty of Medicine, Surakarta, Indonesia
| | - Irvan Raharjo
- A-IGIC (A-Infection, Genomic, Immunology & Cancer) Research Group, Sutami 36A, Surakarta, Indonesia
| | - Hudiyono
- A-IGIC (A-Infection, Genomic, Immunology & Cancer) Research Group, Sutami 36A, Surakarta, Indonesia; Department of Microbiology, Faculty of Medicine, Sutami 36A, Surakarta, Indonesia; Center of Biotechnology and Biodiversity Research and Development, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, Indonesia
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16
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Zidi I, Laaribi AB, Bortolotti D, Belhadj M, Mehri A, Yahia HB, Babay W, Chaouch H, Zidi N, Letaief A, Yacoub S, Boukadida J, Di Luca D, Hannachi N, Rizzo R. HLA-E polymorphism and soluble HLA-E plasma levels in chronic hepatitis B patients. HLA 2016; 87:153-9. [PMID: 26956431 DOI: 10.1111/tan.12767] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/18/2016] [Accepted: 02/10/2016] [Indexed: 12/11/2022]
Abstract
Chronic hepatitis B virus (HBV) infection occurs in association to a deregulation of immune system. Human leukocyte antigen E (HLA-E) is an immune-tolerant nonclassical HLA class I molecule that could be involved in HBV progression. To measure soluble (s) HLA-E in patients with chronic HBV hepatitis (CHB). We tested the potential association of HLA-E*01:01/01:03 A > G gene polymorphism to CHB. Our cohort consisted of 93 Tunisian CHB patients (stratified in CHB with high HBV DNA levels and CHB with low HBV DNA levels) and 245 healthy donors. Plasma sHLA-E was determined using enzyme-linked immunosorbent assay (ELISA). Genotyping was performed using polymerase chain reaction sequence-specific primer. No association between HLA-E*01:01/01:03 A > G polymorphism and HBV DNA levels in CHB patients was found. G/G genotype is less frequent in CHB patients without significance. sHLA-E is significantly enhanced in CHB patients compared with healthy controls (P = 0.0017). Stratification according to HBV DNA levels showed that CHB patients with low HBV DNA levels have higher sHLA-E levels compared with CHB patients with high HBV DNA levels. CHB patients with G/G genotype have enhanced sHLA-E levels compared with other genotypes (P = 0.037). This significant difference is maintained only for CHB women concerning G/G genotypes (P = 0.042). Finally, we reported enhanced sHLA-E in CHB patients with advanced stages of fibrosis (P = 0.032). We demonstrate, for the first time, the association of sHLA-E to CHB. Owing to the positive correlation of HLA-E*01:01/01:03 A > G polymorphism and the association of sHLA-E to advanced fibrosis stages, HLA-E could be a powerful predictor for CHB progression. Further investigations will be required to substantiate HLA-E role as a putative clinical biomarker of CHB.
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Affiliation(s)
- I Zidi
- Laboratory Microorganismes et Biomolécules Actives, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - A B Laaribi
- Laboratory Microorganismes et Biomolécules Actives, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
- Laboratory of Microbiology and Immunology, UR12SP34, University Hospital Farhat Hached, Sousse, Tunisia
| | - D Bortolotti
- Department of Experimental and Diagnostic Medicine, Section Microbiology, University of Ferrara, Ferrara, Italy
| | - M Belhadj
- Laboratory of Microbiology and Immunology, UR12SP34, University Hospital Farhat Hached, Sousse, Tunisia
| | - A Mehri
- Laboratory of Microbiology and Immunology, UR12SP34, University Hospital Farhat Hached, Sousse, Tunisia
| | - H B Yahia
- Laboratory Microorganismes et Biomolécules Actives, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - W Babay
- Laboratory Microorganismes et Biomolécules Actives, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - H Chaouch
- Department of Internal Medicine and Infectious Diseases, University Hospital Farhat Hached, Sousse, Tunisia
| | - N Zidi
- Faculty of Medicine Ibn Al Jazzar, University of Sousse, Sousse, Tunisia
| | - A Letaief
- Department of Internal Medicine and Infectious Diseases, University Hospital Farhat Hached, Sousse, Tunisia
| | - S Yacoub
- Regional Center of Blood Transfusion, University Hospital Farhat Hached, Sousse, Tunisia
| | - J Boukadida
- Laboratory of Microbiology and Immunology, UR12SP34, University Hospital Farhat Hached, Sousse, Tunisia
| | - D Di Luca
- Department of Experimental and Diagnostic Medicine, Section Microbiology, University of Ferrara, Ferrara, Italy
| | - N Hannachi
- Laboratory of Microbiology and Immunology, UR12SP34, University Hospital Farhat Hached, Sousse, Tunisia
| | - R Rizzo
- Department of Experimental and Diagnostic Medicine, Section Microbiology, University of Ferrara, Ferrara, Italy
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17
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Celik AA, Kraemer T, Huyton T, Blasczyk R, Bade-Döding C. The diversity of the HLA-E-restricted peptide repertoire explains the immunological impact of the Arg107Gly mismatch. Immunogenetics 2016; 68:29-41. [PMID: 26552660 PMCID: PMC4701785 DOI: 10.1007/s00251-015-0880-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/29/2015] [Indexed: 12/21/2022]
Abstract
Human leukocyte antigen (HLA)-E molecules are potent inhibitors of NK cell-mediated killing. Low in polymorphisms, two alleles are widely expressed among diverse populations: HLA-E*01:01 and HLA-E*01:03. Both alleles are distinguished by one SNP resulting in the substitution Arg107Gly. Both alleles present a limited set of peptides derived from class I leader sequences physiologically; however, HLA-E*01:01 presents non-canonical peptides in the absence of HLA class I molecules. To further assess the functional differences between both alleles, we analyzed the peptide repertoire of HLA-E*01:03 by applying soluble HLA technology followed by mass-spectrometric peptide sequencing. HLA-E*01:03 restricted peptides showed a length of 9-17 amino acids and differed in their biophysical properties, no overlap in the peptide repertoire of both allelic variants could be observed; however, both alleles shared marginal peptides from the same proteomic content. Artificial APCs expressing empty HLA-E*01:01 or E*01:03 molecules were generated and stabilized using cognate HLA class I-derived peptide ligands to analyze the impact of residue 107 within the HLA-E heavy chain on the NKG2/CD94 receptor engagement. Differences in peptide stabilization could be translated to the density and half-life time of peptide-HLA-E molecules on the cell surface that subsequently impacted NK cell inhibition as verified by cytotoxicity assays. Taken together, these data illustrate functional differences of HLA-E allelic variants induced by a single amino acid. Furthermore, the function of HLA-E in pathophysiologic situations when the HLA processing machinery is interrupted seems to be more emphasized than previously described, implying a crucial role for HLA-E in tumor or viral immune episodes.
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Affiliation(s)
- Alexander A Celik
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Thomas Kraemer
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Trevor Huyton
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Christina Bade-Döding
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany.
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Ghasemzadeh M, Hosseini E, Schwarer AP, Pourfathollah AA. NK cell maturation to CD56(dim) subset associated with high levels of NCRs overrides the inhibitory effect of NKG2A and recovers impaired NK cell cytolytic potential after allogeneic hematopoietic stem cell transplantation. Leuk Res 2015; 43:58-65. [PMID: 26856773 DOI: 10.1016/j.leukres.2015.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 11/20/2015] [Accepted: 12/12/2015] [Indexed: 01/10/2023]
Abstract
NK cell cytotoxicity against residual leukemic cells is crucial for immune system reconstitution after hematopoietic stem cell transplantation (HSCT). Since immune recovery after transplant still remains a major concern, we studied the counterbalance of NK cell receptors after HSCT and its importance in NK cell functional recovery. We investigated NK cell reconstitution in 27 acute leukemia patients at different time points following HLA-matched allogeneic HSCT compared to those of donors. NK cells were evaluated for their cytotoxicity in a standard (51)Cr-release assay against target cells and also analyzed for their receptors expression using flow cytometry. Early after transplant, we found higher percentage of CD56(bright) NK cells, increased levels of NKG2A and NCRs as well as decreased levels of KIRs expression on NK cells associated with an impaired cytotoxicity of these cells. All the abnormalities were normalized by one year after HSCT when CD56(bright) NK cells gradually differentiated into CD56(dim) subset. Collectively, we confirmed a gradual increase of CD56(dim) NK cells expressing NCRs with the significant decrease in NKG2A expression on NK cells. This finding was also associated with the recovery of NK cell cytotoxicity that suggests an important role for the kinetics of NK cell receptors during cell maturation in HSCT outcome.
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Affiliation(s)
- Mehran Ghasemzadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran; Australian Centre for Blood Diseases, Monash University, Melbourne, Australia
| | - Ehteramolsadat Hosseini
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran; Alfred Medical Research and Education Precinct, Department of Immunology, Monash University, Melbourne, Australia.
| | - Anthony P Schwarer
- Department of Hematology and Oncology, Eastern School, Monash University, Melbourne, Australia
| | - Ali Akbar Pourfathollah
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran; Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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19
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Martín P, Krsnik I, Navarro B, Provencio M, García JF, Bellas C, Vilches C, Gomez-Lozano N. HLA Allele E*01:01 Is Associated with a Reduced Risk of EBV-Related Classical Hodgkin Lymphoma Independently of HLA-A*01/*02. PLoS One 2015; 10:e0135512. [PMID: 26261988 PMCID: PMC4532421 DOI: 10.1371/journal.pone.0135512] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 07/22/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND An inefficient immune response against Epstein-Barr virus (EBV) infection is related to the pathogenesis of a subgroup of classical Hodgkin lymphomas (cHL). Some EBV immune-evasion mechanisms target HLA presentation, including the non-classical HLA-E molecule. HLA-E can be recognized by T cells via the TCR, and it also regulates natural killer (NK) cell signaling through the inhibitory CD94/NKG2A receptor. Some evidences indicate that EBV-infected B-cells promote the proliferation of NK subsets bearing CD94/NKG2A, suggesting a relevant function of these cells in EBV control. Variations in CD94/NKG2A-HLA-E interactions could affect NK cell-mediated immunity and, consequently, play a role in EBV-driven transformation and lymphomagenesis. The two most common HLA-E alleles, E*01:01 and E*01:03, differ by a single amino acid change that modifies the molecule function. We hypothesized that the functional differences in these variants might participate in the pathogenicity of EBV. AIM We studied two series of cHL patients, both with EBV-positive and-negative cases, and a cohort of unrelated controls, to assess the impact of HLA-E variants on EBV-related cHL susceptibility. RESULTS We found that the genotypes with at least one copy of E*01:01 (i.e., E*01:01 homozygous and heterozygous) were underrepresented among cHL patients from both series compared to controls (72.6% and 71.6% vs 83%, p = 0.001). After stratification by EBV status, we found low rates of E*01:01-carriers mainly among EBV-positive cases (67.6%). These reduced frequencies are seen independently of other factors such as age, gender, HLA-A*01 and HLA-A*02, HLA alleles positively and negatively associated with the disease (adjusted OR = 0.4, p = 0.001). Furthermore, alleles from both HLA loci exert a cumulative effect on EBV-associated cHL susceptibility. CONCLUSIONS These results indicate that E*01:01 is a novel protective genetic factor in EBV-associated cHL and support a role for HLA-E recognition on the control of EBV infection and lymphomagenesis.
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Affiliation(s)
- Paloma Martín
- Group of Molecular Pathology, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Isabel Krsnik
- Department of Hematology, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Belen Navarro
- Department of Hematology, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Mariano Provencio
- Department of Oncology, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Juan F. García
- Department of Pathology, MD Anderson Cancer Center, Madrid, Spain
| | - Carmen Bellas
- Group of Molecular Pathology, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Carlos Vilches
- Group of Immunogenetics and Histocompatibility, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
| | - Natalia Gomez-Lozano
- Group of Immunity and lymphoproliferative diseases, Instituto de Investigación Sanitaria Puerta de Hierro (IDIPHIM), Majadahonda, Spain
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Abstract
Hematopoietic stem cell transplantation (HSCT) is a procedure in which infusion of hematopoietic stem cells is used to reestablish hematopoietic function in patients with damaged or defective bone marrow or immune systems. Early and late complications following allogeneic HSCT include acute and chronic graft-versus-host disease (GVHD), donor rejection, graft failure, relapse of primary malignancy, conditioning-related toxicity, immunodeficiency and infections. Immunology has a central role in allogeneic hematopoietic cell transplantation. Any appreciation of the immunological mechanism involved in engraftment, GVHD, the development of tolerance, immune reconstitution, and the control of malignancy requires some understanding of the immunologic basis for immune reactions provoked by grafting tissue from one individual to another. In the future it should be possible to learn what gene(s) must be activated and which must be repressed to force stem cells into division without maturation; to engineer a mechanism into the cells that stops proliferation and sets the stage for amplification; to search if there could be a universal donor cell line, neatly packaged and stabilized in sealed vials and distributed by the pharmaceutical industry; to modify the transplanted cells in such a way that they have a proliferative advantage over those of the host and to deliver the lethal blow against the neoplasm, perhaps the cells that are infused will be engineered in such a way as to be able to distinguish between normal host cells and tumor.
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Affiliation(s)
- Youssef Mohamed Mosaad
- Clinical Immunology Unit, Clinical Pathology Department & Mansoura Research Center for Cord Stem Cell (MARC-CSC), Mansoura Faculty of Medicine, Mansoura University , Mansoura , Egypt
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21
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Lauterbach N, Wieten L, Popeijus HE, Vanderlocht J, van Zon PMH, Voorter CEM, Tilanus MGJ. Peptide-induced HLA-E expression in human PBMCs is dependent on peptide sequence and the HLA-E genotype. TISSUE ANTIGENS 2015; 85:242-51. [PMID: 25735891 DOI: 10.1111/tan.12525] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 11/13/2014] [Accepted: 01/18/2015] [Indexed: 12/31/2022]
Abstract
Human Leukocyte Antigen (HLA)-E is a low-polymorphic non-classical HLA class I molecule which plays a crucial role in immune surveillance by presentation of peptides to T and natural killer (NK) cells. HLA-E polymorphism is related to HLA-E surface expression and is associated with patient outcome after stem cell transplantation. We aim to investigate the regulation of HLA-E expression level in peripheral blood mononuclear cells (PBMCs) of healthy individuals homozygous for HLA-E*01:01 or HLA-E*01:03, by using a panel of HLA-E binding peptides derived from CMV, Hsp60 and HLA class I. Basal and peptide-induced HLA-E surface expression levels were higher in PBMC from HLA-E*01:03 homozygous subjects as compared to PBMC from HLA-E*01:01 homozygous subjects. HLA-E mRNA levels were comparable between the two genotypes and remained constant after peptide stimulation. HLA-E surface expression seemed to be not only dependent on the HLA-E genotype, but also on the sequence of the peptide as evidenced by the profound difference in HLA-E upregulation with the Hsp60 and the B7 peptide. Our results showed that peptide-induced HLA-E expression is regulated at the posttranscriptional level as extracellular peptide stimulation did not influence RNA expression. This study provides new insights in the mechanism by which HLA-E expression is regulated and underlines a new role for extracellular peptides in inducing HLA-E translation, which may represent a defense mechanism against lytic viral infections and necrosis.
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Affiliation(s)
- N Lauterbach
- Transplantation Immunology, Tissue Typing Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands
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22
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Mossallam GI, Fattah RA, El-Haddad A, Mahmoud HK. HLA-E polymorphism and clinical outcome after allogeneic hematopoietic stem cell transplantation in Egyptian patients. Hum Immunol 2015; 76:161-5. [PMID: 25543014 DOI: 10.1016/j.humimm.2014.12.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 10/20/2014] [Accepted: 12/15/2014] [Indexed: 02/06/2023]
Abstract
UNLABELLED Human leukocyte antigen-E (HLA)-E in a non-classical major histocompatibility complex (MHC) class I (Ib) molecule. HLA-E-peptide complex acts as a ligand for natural killer (NK) cells and CD8+ T lymphocytes playing a dual role in natural and acquired immune responses. The difference in expression levels between HLA-E alleles was suggested to have impact on transplantation outcome. The aim of the study is to evaluate the clinical effect of HLA-E alleles on transplantation in a group of Egyptian patients. HLA-E genotyping was analyzed in eighty-eight recipients of stem cell transplantation using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). HLA-E*01:03 allele showed a trend towards lower cumulative incidence of relapse at 2 years compared to homozygous HLA-E*01:01 genotype (8% versus 21.5%, p=0.09, HR: 0.30, 95% CI: 0.91-1.69). HLA-E was the only factor showing near significant association with relapse incidence. HLA-E polymorphism did not affect the cumulative incidence of acute GVHD grades II-IV at 100 days, the 2-year cumulative incidence of extensive chronic GVHD, transplant related mortality (TRM) or overall survival (OS). CONCLUSION the suggested association of HLA-E polymorphism with reduced risk of relapse needs verification in a larger cohort. However, its proposed role in GVL helps better understanding of alloreactivity of T cells and NK cells and their implication in immunotherapy post allogeneic hematopoietic stem cell transplantation.
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Affiliation(s)
- Ghada I Mossallam
- Bone Marrow Transplantation Laboratory Unit, National Cancer Institute, Cairo University, Cairo, Egypt.
| | - Raafat Abdel Fattah
- Department of Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Alaa El-Haddad
- Department of Pediatric Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Hossam K Mahmoud
- Department of Medical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt
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23
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Hosseini E, Schwarer AP, Ghasemzadeh M. Do human leukocyte antigen E polymorphisms influence graft-versus-leukemia after allogeneic hematopoietic stem cell transplantation? Exp Hematol 2015; 43:149-57. [PMID: 25434712 DOI: 10.1016/j.exphem.2014.11.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 11/16/2014] [Accepted: 11/19/2014] [Indexed: 12/18/2022]
Abstract
Hematopoietic-stem-cell transplantation (HSCT) is complicated by histocompatibility-dependent immune responses such as graft-versus-host disease, relapse, and graft rejection. The severity of these common adverse effects is directly related to the degree of human leukocyte antigen (HLA) incompatibility. In addition to the key role of classic HLA matching in influencing HSCT outcome, several lines of evidence suggest an important role for nonclassic major histocompatibility complex class I molecule, HLA-E. The interaction of HLA-E with NKG2A, its main receptor on natural killer cells, modulates cell-mediated cytotoxicity and cytokine production, an important role in innate immune responses. In addition, the HLA-E molecule can present peptides to different subtypes of T cells that may either support graft-versus-leukemia effects or be involved in bridging innate and acquired immunity. To date, the role of HLA-E and its polymorphisms in HSCT outcomes such as graft-versus-host disease, transplant-related mortality, and improved survival has been published by a number of groups. In addition, these data suggest an association between HLA-E polymorphisms and relapse. Whether the engagement of the HLA-E molecule in the modulation of donor T cells is involved in the graft-versus-leukemia effect, or whether a different mechanism of HLA-E dependent reduction of relapse is involved, requires further investigation.
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Affiliation(s)
- Ehteramolsadat Hosseini
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran; Department of Immunology, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Australia
| | - Anthony P Schwarer
- Department of Immunology, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Australia
| | - Mehran Ghasemzadeh
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
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24
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Association of HLA-E*01:01/*01:03 polymorphism with methotrexate-based treatment response in South Indian rheumatoid arthritis patients. INDIAN JOURNAL OF RHEUMATOLOGY 2014. [DOI: 10.1016/j.injr.2014.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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25
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Wieten L, Mahaweni NM, Voorter CEM, Bos GMJ, Tilanus MGJ. Clinical and immunological significance of HLA-E in stem cell transplantation and cancer. TISSUE ANTIGENS 2014; 84:523-35. [PMID: 25413103 DOI: 10.1111/tan.12478] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Human leukocyte antigen-E (HLA-E) is a nonclassical HLA class I molecule that canonically binds peptides derived from the leader sequence of classical HLA class I. HLA-E can also bind peptides from stress protein [e.g. heat shock protein 60 (Hsp60)] and pathogens, illustrating the importance of HLA-E for anti-viral and anti-tumor immunity. Like classical HLA class I molecules, HLA-E is ubiquitously expressed, however, it is characterized by only a very limited sequence variability and two dominant protein forms have been described (HLA-E*01:01 and HLA-E*01:03). HLA-E influences both the innate and the adaptive arms of the immune system by the engagement of inhibitory (e.g. NKG2A) and activating receptors [e.g. αβ T cell receptor (αβTCR) or NKG2C] on NK cells and CD8 T cells. The effects of HLA-E on the cellular immune response are therefore complex and not completely understood yet. Here, we aim to provide an overview of the immunological and clinical relevance of HLA-E and HLA-E polymorphism in stem cell transplantation and in cancer. We review novel insights in the mechanism via which HLA-E expression levels are controlled and how the cellular immune response in transplantation and cancer is influenced by HLA-E.
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Affiliation(s)
- L Wieten
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, the Netherlands
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26
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Pabón MA, Navarro CE, Osorio JC, Gómez N, Moreno JP, Donado AF, Pérez HC, Lozano E. Impact of human leukocyte antigen molecules E, F, and G on the outcome of transplantation. Transplant Proc 2014; 46:2957-65. [PMID: 25420801 DOI: 10.1016/j.transproceed.2014.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND HLA class I molecules are divided into classic (Ia) and nonclassic (Ib). Nonclassic HLA molecules (E, F, and G) have acquired relevance owing to their immunomodulatory properties and possible repercussions for induction of tolerance in organ transplantation. The objective of this study was to identify the impact of these molecules on transplant success or failure. METHODS A systematic review of literature was performed with the use of MeSH terms in Pubmed. Clinical trials, randomized clinical trials, case-control studies, and reviews from the past 15 years were included. RESULTS HLA-E*0103/E*0103 genotype is associated with lower risk of graft-versus-host disease, decreased mortality, and greater disease-free survival after bone marrow transplantation. There were no significant associations between HLA-F and clinical outcomes in any of the studies. Elevated serum levels of HLA-G were associated with a lower incidence of rejection in hepatic and renal transplantation during the 1st year and lower T-cell response after bone marrow, liver, and kidney transplantation. Detection of mRNA of HLA-G1 was also associated with less graft rejection. CONCLUSIONS Current literature suggests that nonclassic HLA Ib molecules play an important role in immunotolerance in organ transplantation; however, more studies are required to predict outcomes related to specific genotypes.
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Affiliation(s)
- M A Pabón
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia.
| | - C E Navarro
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia
| | - J C Osorio
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia; Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - N Gómez
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia
| | - J P Moreno
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia
| | - A F Donado
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia
| | - H C Pérez
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia
| | - E Lozano
- Organ and Tissues Transplant Group, Medical School, National University of Colombia, Bogotá, Colombia; Hospital Universitario San Ignacio, Bogotá, Colombia
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27
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Kraemer T, Blasczyk R, Bade-Doeding C. HLA-E: a novel player for histocompatibility. J Immunol Res 2014; 2014:352160. [PMID: 25401109 PMCID: PMC4221882 DOI: 10.1155/2014/352160] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 10/03/2014] [Indexed: 11/17/2022] Open
Abstract
The classical class I human leukocyte antigens (HLA-A, -B, and -C) present allele-specific self- or pathogenic peptides originated by intracellular processing to CD8(+) immune effector cells. Even a single mismatch in the heavy chain (hc) of an HLA class I molecule can impact on the peptide binding profile. Since HLA class I molecules are highly polymorphic and most of their polymorphisms affect the peptide binding region (PBR), it becomes obvious that systematic HLA matching is crucial in determining the outcome of transplantation. The opposite holds true for the nonclassical HLA class I molecule HLA-E. HLA-E polymorphism is restricted to two functional versions and is thought to present a limited set of highly conserved peptides derived from class I leader sequences. However, HLA-E appears to be a ligand for the innate and adaptive immune system, where the immunological response to peptide-HLA-E complexes is dictated through the sequence of the bound peptide. Structural investigations clearly demonstrate how subtle amino acid differences impact the strength and response of the cognate CD94/NKG2 or T cell receptor.
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Affiliation(s)
- Thomas Kraemer
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Straße 5, 30625 Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Straße 5, 30625 Hannover, Germany
| | - Christina Bade-Doeding
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Straße 5, 30625 Hannover, Germany
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28
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Felício LP, Porto IOP, Mendes-Junior CT, Veiga-Castelli LC, Santos KE, Vianello-Brondani RP, Sabbagh A, Moreau P, Donadi EA, Castelli EC. Worldwide HLA-E nucleotide and haplotype variability reveals a conserved gene for coding and 3' untranslated regions. TISSUE ANTIGENS 2014; 83:82-93. [PMID: 24400773 DOI: 10.1111/tan.12283] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 11/05/2013] [Accepted: 12/03/2013] [Indexed: 11/29/2022]
Abstract
The human leukocyte antigen-E (HLA-E) locus is a human major histocompatibility complex (MHC) gene associated with immune-modulation and suppression of the immune response by the interaction with specific natural killer (NK) and T cell receptors (TCRs). It is considered one of the most conserved genes of the human MHC; however, this low nucleotide variability seems to be a consequence of the scarce number of studies focusing on this subject. In this manuscript we assessed the nucleotide variability at the HLA-E coding and 3' untranslated regions (3'UTRs) in Brazil and in the populations from the 1000Genomes Consortium. Twenty-eight variable sites arranged into 33 haplotypes were detected and most of these haplotypes (98.2%) are encoding one of the two HLA-E molecules found worldwide, E*01:01 and E*01:03. Moreover, three worldwide spread haplotypes, associated with the coding alleles E*01:01:01, E*01:03:01 and E*01:03:02, account for 85% of all HLA-E haplotypes, suggesting that they arose early before human speciation. In addition, the low nucleotide diversity found for the HLA-E coding and 3'UTR in worldwide populations suggests that the HLA-E gene is in fact a conserved gene, which might be a consequence of its key role in the modulation of the immune system.
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Affiliation(s)
- L P Felício
- Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
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29
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Abstract
Acute graft-versus-host disease (GVHD) afflicts as much as 80% of all patients who receive an unrelated donor hematopoietic cell transplant (HCT) for the treatment of blood disorders, even with optimal donor HLA matching and use of prophylactic immunosuppressive agents. Of patients who develop acute GVHD, many are at risk for chronic GVHD and bear the burden of considerable morbidity and lowered quality of life years after transplantation. The immunogenetic basis of GVHD has been the subject of intensive investigation, with the classic HLA genetic loci being the best-characterized determinants. Recent information on the major histocompatibility complex (MHC) region of chromosome 6 as an important source of untyped genetic variation has shed light on novel GVHD determinants. These data open new paradigms for understanding the genetic basis of GVHD.
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30
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Hosseini E, Schwarer AP, Jalali A, Ghasemzadeh M. The impact of HLA-E polymorphisms on relapse following allogeneic hematopoietic stem cell transplantation. Leuk Res 2013; 37:516-9. [PMID: 23395341 DOI: 10.1016/j.leukres.2013.01.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 01/14/2013] [Accepted: 01/16/2013] [Indexed: 10/27/2022]
Abstract
Since relapse following allogeneic hematopoietic stem cell transplantation (HSCT) can be due to the escape of the residual malignant cells from the graft-versus-leukemia (GvL) effect and given the role of NK cells in GvL and the importance of HLA-E in the modulation of NK cell function, we investigated whether polymorphisms of HLA-E molecule could impact on the incidence of relapse and the improvement of Disease-free Survival (DFS) after allogeneic HSCT. The study group included 56 pairs of donors and patients with malignant hematological disorders undergoing HLA-E matched allogeneic HSCT. The median follow-up was 43.6 (range 20.5-113.1) months. They were genotyped for HLA-E locus using a sequence-specific primer (SSP)-PCR. We found a lower incidence of relapse (p=0.02) in the patients with HLA-E*0103/0103 genotype compared to those with other genotypes of HLA-E. We also showed an association between HLA-E*0103/0103 genotype and a better DFS (p=0.001). Our results suggest a protective role for HLA-E*0103/0103 genotype against relapse and an association between this genotype and an improved DFS following HLA-E matched allogeneic HSCT.
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Affiliation(s)
- Ehteramolsadat Hosseini
- Malignant Hematology and Stem Cell Transplantation Service, Alfred Hospital, Monash University, Melbourne, Australia
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31
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Lin CS, Harris SL. A Unified Framework for the Prioritization of Organ Transplant Patients: Analytic Hierarchy Process, Sensitivity and Multifactor Robustness Study. JOURNAL OF MULTI-CRITERIA DECISION ANALYSIS 2012. [DOI: 10.1002/mcda.1480] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Carol S. Lin
- Department of Molecular and Cellular Biology; Harvard University; Cambridge; Massachusetts; USA
| | - Shannon L. Harris
- Decisions, Operations, and Information Technology, Katz Graduate School of Management; University of Pittsburgh; Pittsburgh; Pennsylvania; USA
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Abstract
Graft-versus-host disease (GVHD) is a potentially life-threatening complication of allogeneic hematopoietic cell transplantation. Many genes are presumed to be involved in GVHD, but the best characterized genetic system is that of the human major histocompatibility complex (MHC) located on chromosome 6. Among the hundreds of genes located within the MHC region, the best known and characterized are the classical HLA genes, HLA-A, C, B, DRB1, DQB1, and DPB1. They play a fundamental role in T cell immune responses, and HLA-A, C, and B also function as ligands for the natural killer cell immunoglobulin-like receptors involved in innate immunity. This review highlights the state-of-the art in the field of histocompatibility and immunogenetics of the MHC with respect to genetic risk factors for GVHD.
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Liu XX, Pan FH, Tian W. Characterization of HLA-E polymorphism in four distinct populations in Mainland China. TISSUE ANTIGENS 2012; 80:26-35. [PMID: 22486789 DOI: 10.1111/j.1399-0039.2012.01873.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, human leukocyte antigen (HLA)-E allelic typing was performed for 690 individuals from two southern Chinese Han populations (Hunan Han and Guangdong Han) and two northern Chinese populations (Inner Mongolia Han and Inner Mongolia Mongol) using polymerase chain reaction-sequence-specific priming (PCR-SSP) method. Our data showed that (1) HLA-E*01:01 and HLA-E*01:03, but not E*01:04 allele, were detected in the four populations, HLA-E distribution differed significantly between each of the two southern Chinese Han populations and the Inner Mongolia Mongol population, and between Hunan Han population and Inner Mongolia Han population; (2) HLA-G*01:05N-A*30-E*01:01-C*06-B*13:02-DRB1*07 was a conserved extended haplotype in the Chinese Han populations; (3) five HLA-A-E haplotypes showed significant linkage disequilibrium (LD) in at least one population, including HLA-A*02-E*01:03 in populations except for the Inner Mongolia Mongol group, HLA-A*01-E*01:01 and HLA-A*30-E*01:01 in the Hunan Han and the Inner Mongolia Han populations, HLA-A*33-E*01:01 in the two southern Chinese Han populations and HLA-A*03-E*01:03 in the Inner Mongolia Mongol group; and (4) Ewens-Watterson homozygosity test showed a trend for balancing selection at the HLA-E locus in each of the four populations. Our data unraveled the peculiarity in terms of HLA-E allelic and haplotypic repertoire in four main ethnic groups in Mainland China, findings shown here are valuable for future studies of the potential role of HLA-E in allogeneic organ transplantation and HLA-linked disease association in related ethnic groups.
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Affiliation(s)
- X X Liu
- Department of Immunology, College of Basic Medical Sciences, Central South University, Changsha, Hunan, People's Republic of China
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Fürst D, Bindja J, Arnold R, Herr W, Schwerdtfeger R, Müller CH, Recker K, Schrezenmeier H, Mytilineos J. HLA-E polymorphisms in hematopoietic stem cell transplantation. TISSUE ANTIGENS 2012; 79:287-90. [PMID: 22256791 DOI: 10.1111/j.1399-0039.2011.01832.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Human leukocyte antigen (HLA)-E is an inhibitory ligand of natural killer cells and γ/δ T-cells. Differential expression of HLA-E alleles on the cell surface has been reported to influence outcome of hematopoietic stem cell transplantation (HSCT). We performed HLA-E genotyping in 116 HSCT patients and their HLA-matched unrelated donors. The impact of HLA-E genotypes on patient's overall survival (OS), disease free survival (DFS), cumulative incidences for relapse, transplant-related mortality (TRM) and acute graft vs host disease (aGvHD) was assessed. Neither univariate nor multivariate analysis showed any influence of HLA-E polymorphisms on the investigated endpoints of HSCT in our cohort. We could not confirm any of the previous observations in our cohort and consider it unlikely that HLA-E polymorphisms affect outcome of HSCT.
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Affiliation(s)
- D Fürst
- Department of Transplantation Immunology, Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden-Wuerttemberg - Hessia, Ulm, Germany.
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35
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Graft-versus-tumor effect according to type of graft-versus-host disease defined by National Institutes of Health consensus criteria and associated outcomes. Biol Blood Marrow Transplant 2012; 18:1136-43. [PMID: 22261380 DOI: 10.1016/j.bbmt.2012.01.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 01/11/2012] [Indexed: 11/23/2022]
Abstract
The impact of National Institutes of Health consensus criteria (NCC) graft-versus-host disease (GVHD) on survival has rarely been investigated in a large cohort of patients with GVHD presenting before and after day 100 posttransplantation. We retrospectively investigated 775 patients who underwent allogeneic stem cell transplantation and assessed the GVHD effects on survival by the time-dependent covariates in Cox proportional hazards regression models. Using the NCC, the patients were classified into 4 groups: (1) no GVHD (n = 251); (2) acute GVHD (aGVHD) only (n = 199), including 26 patients with late aGVHD; (3) classic chronic GVHD (cGVHD; n = 232); and (4) overlap syndrome (OS; n = 93). Multivariate analyses showed that classic cGVHD (hazard ratio [HR], 0.46; 95% confidence interval [CI], 0.27-0.77) and OS (HR, 0.52; 95% CI, 0.28-0.96) were associated with significantly decreased risk of relapse, whereas aGVHD only was not associated with relapse rate (HR, 1.11; 95% CI, 0.76-1.63). All aGVHD events, including the period of aGVHD in patients who developed cGVHD after aGVHD, also did not affect the risk of relapse (HR, 0.74; 95% CI, 0.49-1.12). All types of GVHD were significantly associated with higher nonrelapse mortality in common. Finally, patients with aGVHD only had significantly lower overall survival and disease-free survival compared with those without GVHD, in contrast to favorable survival outcomes in patients with cGVHD without previous aGVHD. This study demonstrates that NCC GVHD type is associated with different graft-versus-tumor effects. Further studies are needed to investigate risk factors, pathogenesis, and biomarkers for each type of NCC GVHD.
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Veiga-Castelli LC, Castelli EC, Mendes CT, da Silva WA, Faucher MC, Beauchemin K, Roger M, Moreau P, Donadi EA. Non-classical HLA-E gene variability in Brazilians: a nearly invariable locus surrounded by the most variable genes in the human genome. TISSUE ANTIGENS 2012; 79:15-24. [PMID: 22050290 DOI: 10.1111/j.1399-0039.2011.01801.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The non-classical human leukocyte antigen (HLA) class I genes present a very low rate of variation. So far, only 10 HLA-E alleles encoding three proteins have been described, but only two are frequently found in worldwide populations. Because of its historical background, Brazilians are very suitable for population genetic studies. Therefore, 104 bone marrow donors from Brazil were evaluated for HLA-E exons 1-4. Seven variation sites were found, including two known single nucleotide polymorphisms (SNPs) at positions +424 and +756 and five new SNPs at positions +170 (intron 1), +1294 (intron 3), +1625, +1645 and +1857 (exon 4). Haplotyping analysis did show eight haplotypes, three of them known as E*01:01:01, E*01:03:01 and E*01:03:02:01 and five HLA-E new alleles that carry the new variation sites. The HLA-E*01:01:01 allele was the predominant haplotype (62.50%), followed by E*01:03:02:01 (24.52%). Selective neutrality tests have disclosed an interesting pattern of selective pressures in which balancing selection is probably shaping allele frequency distributions at an SNP at exon 3 (codon 107), sequence diversity at exon 4 and the non-coding regions is facing significant purifying pressure. Even in an admixed population such as the Brazilian one, the HLA-E locus is very conserved, presenting few polymorphic SNPs in the coding region.
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Affiliation(s)
- L C Veiga-Castelli
- Divisão de Imunologia Clínica, Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brasil.
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37
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Abstract
Human leukocyte antigen-E (HLA-E) is a non-classical HLA class I gene that shows a limited degree of polymorphism compared to the classical HLA genes. The HLA-E molecule can bind peptides derived from the leader sequence of various HLA class I alleles and some viral homologues, including CMV. The HLA-E peptide complex can act as a ligand for the CD94/NKG2 receptors expressed on the surface of natural killer cells and T cell subsets. Differences in expression levels between the different HLA-E alleles have been reported and a role for HLA-E polymorphism in stem cell transplantation has been postulated. This chapter focuses on routine technologies for HLA-E typing: the sequence-specific primer-PCR method that uses sequence-specific primers, the PCR sequence-specific oligonucleotides Luminex method, using sequence-specific probes attached to beads and the sequencing-based typing method, where sequencing of the alleles is performed.
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Affiliation(s)
- Nina Lauterbach
- Transplantation Immunology, Tissue Typing Laboratory, Maastricht University Medical Center, Maastricht, The Netherlands
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38
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Zhang J, Pan L, Chen L, Feng X, Zhou L, Zheng S. Non-classical MHC-Ι genes in chronic hepatitis B and hepatocellular carcinoma. Immunogenetics 2011; 64:251-8. [DOI: 10.1007/s00251-011-0580-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 09/28/2011] [Indexed: 12/20/2022]
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Iwaszko M, Bogunia-Kubik K. Clinical significance of the HLA-E and CD94/NKG2 interaction. Arch Immunol Ther Exp (Warsz) 2011; 59:353-67. [PMID: 21800130 DOI: 10.1007/s00005-011-0137-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 04/26/2011] [Indexed: 11/26/2022]
Abstract
HLA-E belongs to the non-classical HLA (class Ib family) broadly defined by a limited polymorphism and a restricted pattern of cellular expression. So far, only two functional alleles differing at only one amino acid position (non-synonymous mutation) in the α2 heavy chain domain, where an arginine in position 107 in HLA-E*0101 is replaced by a glycine in HLA-E*0103, have been reported. The interaction between non-classical HLA-E molecule and CD94/NKG2A receptor plays a crucial role in the immunological response involving natural killer (NK) cells and cytotoxic T lymphocytes. All proteins forming CD94/NKG2 receptors are encoded by genes situated in the same cluster on chromosome 12, allowing tight control over the order of their expression. The inhibitory members of the NKG2 receptor family are available on the cell surface before activating the members to prevent autoimmune incidents during immune cells' ontogenesis. In the present review, the potential role of this interaction in viral infection, pregnancy and transplantation of allogeneic hematopoietic stem cells (HSC) is presented and discussed. The review will also include the effect of HLA-E polymorphism on the outcome of HSC transplants in humans.
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Affiliation(s)
- Milena Iwaszko
- L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
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40
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Mosaad YM, Abdel-Dayem Y, El-Deek BS, El-Sherbini SM. Association between HLA-E *0101 homozygosity and recurrent miscarriage in Egyptian women. Scand J Immunol 2011; 74:205-9. [PMID: 21410502 DOI: 10.1111/j.1365-3083.2011.02559.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objective was to investigate the frequency of human leucocyte antigen (HLA)-E alleles in Egyptian women with and without recurrent miscarriage (RM) to evaluate their role on the maintenance of pregnancy. A case-control study was adopted. HLA-E gene polymorphism typing was carried out by restriction fragment length polymorphism for 108 women with RM and 120 fertile female controls. The frequency of HLA-E *0101 allele was higher in patients with RM and HLA-E*0103 allele was higher in fertile controls, and the difference was statistically significant (P=0.003, P(c)=0.006). HLA-E*0101/0101 genotype was the most frequent genotype in patients (45.4%), followed by HLA-E*0101/0103 (44.4%) and finally HLA-E*0103/0103 genotype (10.2%). The difference in the frequency of HLA-E*0101/0101 homozygous genotype in patients with RM compared with that in the fertile controls was statistically significant (OR=2.02, 95% CI=1.13-3.62, P=0.011, P(c)=0.033). We found an increased frequency of homozygosity for HLA-E*0101 in Egyptian women with RM. HLA-E*0101 homozygosity may thus be a risk factor for RM.
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Affiliation(s)
- Y M Mosaad
- Mansoura Faculty of Medicine, Clinical Pathology Department, Clinical Immunology Unit, Mansoura, Egypt.
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Di Cristofaro J, Julie DC, Buhler S, Frassati C, Basire A, Galicher V, Baier C, Essautier A, Regnier A, Granier T, Lepfoundzou AD, Chiaroni J, Picard C. Linkage disequilibrium between HLA-G*0104 and HLA-E*0103 alleles in Tswa Pygmies. TISSUE ANTIGENS 2011; 77:193-200. [PMID: 21299523 DOI: 10.1111/j.1399-0039.2010.01599.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nonclassical human leukocyte antigen (HLA)-G and -E loci are separated by approximately 660 kb on the short arm of chromosome 6. Interestingly, some functional and expression characteristics are relatively identical or associated for both molecules. For example, expression of HLA-E on the cell surface has been linked to preferential binding of nonameric leader peptides derived from the signal sequence of HLA-G. It has been suggested that these two molecules act synergistically in modulating susceptibility to infectious or chronic inflammatory diseases. A possible explanation for these observations is that HLA-E and HLA-G are evolving under analogous selective pressures and have functions that place them under selective regimes differing from classical HLA genes. The purpose of this study was to investigate the consistency of this hypothesis based on the characterization of the molecular polymorphism of these two genes and their linkage disequilibrium (LD) in three populations, i.e. Southeastern French (n = 57), Teke Congolese (n = 84) and Tswa Pygmies (n = 74). Allelic frequencies observed for HLA-G and HLA-E and for 14-bp ins/del polymorphism in the three populations were similar to those observed in the literature for populations from corresponding geographic areas. Only one of the recently described HLA-G polymorphisms (HLA-G*01:07-01:16) was found, i.e. HLA-G*01:15 in one individual from Congo. We showed that two haplotypes in Tswa Pygmies, i.e. HLA-G*01:04-E*01:03:01 and G*01:04-E*01:01, exhibited highly significant positive and negative D' values respectively. Although these LD could have functional implications, it is more likely because of the genetic drift as the two other populations did not display any significant LD.
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Affiliation(s)
- J Di Cristofaro
- UMR 6578 (Anthropobiologie Bioculturelle), Université de la Méditerranée, CNRS, EFS, Marseille, France
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Takao S, Ishikawa T, Yamashita K, Uchiyama T. The rapid induction of HLA-E is essential for the survival of antigen-activated naive CD4 T cells from attack by NK cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2010; 185:6031-40. [PMID: 20952676 DOI: 10.4049/jimmunol.1000176] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Increasing evidence shows that NK cells regulate adaptive immunity, but the underlying mechanisms are not well understood. In this study, we show that activated human NK cells suppress autologous naive CD4 T cell proliferation in response to allogeneic dendritic cells (DCs) by selectively killing Ag-activated T cells. Naive CD4 T cells, which were initially resistant to NK cell-mediated cytotoxicity, became substantially susceptible to NK cells within a day after priming with DCs. Ag-activated T cells showed various degrees of susceptibility to NK cells. After 1 d of priming with LPS-matured DCs, T cells were less susceptible to NK cells than were T cells primed with TNF-α-matured DCs. Subsequently at day 3, Ag-activated T cells regained resistance to NK cells. The level of HLA-E expression on Ag-activated T cells was closely correlated with resistance to NK cells. HLA-E was highly expressed at day 1 by T cells primed with LPS-matured DCs but not by T cells primed with TNF-α-matured DCs. An Ab blockade revealed a critical role for the HLA-E-NKG2A interaction in the protection of Ag-activated T cells from NK cells. Collectively, this study demonstrates that NK cells impact adaptive immunity through the finely controlled kinetics of HLA-E expression on T cells. Thus, HLA-E may be a new target for immunoregulation.
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Affiliation(s)
- Sumiko Takao
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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