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Grille-Cancela Z, Barge-Caballero E, Suárez-Fuentetaja N, Domenech-García N, Paniagua-Martín MJ, Barge-Caballero G, Couto-Mallón D, Enríquez-Vázquez D, Blanco-Canosa P, Pombo-Otero J, Vázquez-Rodríguez JM, Crespo-Leiro MG. Soluble HLA-G levels in heart transplant recipients: Dynamics and correlation with clinical outcomes. Transpl Immunol 2023; 76:101771. [PMID: 36473577 DOI: 10.1016/j.trim.2022.101771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
PURPOSE To describe the evolution of the serum levels of soluble HLA-G (s-HLA-G) during the first 12 months after heart transplantation (HT) and to correlate it with clinical outcomes. METHODS Observational study based in a single-center cohort of 59 patients who underwent HT between December-2003 and March-2010. Soluble HLA-G levels were measured from serum samples extracted before HT, and 1, 3, 6 and 12 months after HT. The cumulative burden of s-HLA-G expression during the first post-transplant year was assessed by means of the area under the curve (AUC) of s-HLA-G levels over time and correlated with the acute rejection burden -as assessed by a rejection score-, the presence of coronary allograft vasculopathy (CAV) grade ≥ 1 and infections during the first post-transplant year; as well as with long-term patient and graft survival. Mean follow-up was 12.4 years. RESULTS Soluble HLA-G levels decreased over the first post-transplant year (p = 0.020). The AUC of s-HLA-G levels during the first post-transplant year was higher among patients with infections vs. those without infections (p = 0.006). No association was found between the AUC of s-HLA-G levels and the burden of acute rejection or the development of CAV. Overall long-term survival, long-term survival free of late graft failure and cancer-free survival were not significantly different in patients with an AUC of s-HLA-G levels higher or lower than the median of the study population. CONCLUSIONS Soluble HLA-G levels decreased over the first year after HT. Higher HLA-G expression was associated with a higher frequency of infections, but not with the burden of acute rejection or the development of CAV, neither with long-term patient or graft survival.
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Affiliation(s)
- Zulaika Grille-Cancela
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - Eduardo Barge-Caballero
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain.
| | - Natalia Suárez-Fuentetaja
- Servicio de Análisis Clínicos, Complejo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain
| | - Nieves Domenech-García
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - María J Paniagua-Martín
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - Gonzalo Barge-Caballero
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - David Couto-Mallón
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - Daniel Enríquez-Vázquez
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - Paula Blanco-Canosa
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain
| | - Jorge Pombo-Otero
- Servicio de Anatomía Patológica, Complejo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain
| | - José M Vázquez-Rodríguez
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
| | - María G Crespo-Leiro
- Servicio de Cardiología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain; Grupo de Investigación Cardiovascular (GRINCAR), Universidad de A Coruña (UDC), A Coruña, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Instituto de Salud Carlos III, Madrid, Spain
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Le Floc’h B, Costet N, Vu N, Bernabeu-Gentey P, Pronier C, Houssel-Debry P, Boudjéma K, Renac V, Samson M, Amiot L. Involvement of circulating soluble HLA-G after liver transplantation in the low immunogenicity of hepatic allograft. PLoS One 2023; 18:e0282736. [PMID: 36897848 PMCID: PMC10004504 DOI: 10.1371/journal.pone.0282736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/20/2023] [Indexed: 03/11/2023] Open
Abstract
Graft rejection is a critical risk in solid-organ transplantation. To decrease such risk, an understanding of the factors involved in low immunogenicity of liver allografts could potentially make it possible to transfer this tolerogenic property to other transplanted organs. HLA-G, a natural physiological molecule belonging to the Human Leukocyte Antigen class (HLA) Ib family that induces tolerance, is associated with fewer rejections in solid-organ transplantation. In contrast to HLA-G, HLA antigen incompatibilities between donor and recipient can lead to rejection, except in liver transplantation. We compared HLA-G plasma levels and the presence of anti-HLA antibodies before and after LT to understand the low immunogenicity of the liver. We conducted a large prospective study that included 118 patients on HLA-G plasma levels during a 12-month follow-up and compared them to the status of anti-HLA antibodies. HLA-G plasma levels were evaluated by ELISA at seven defined pre- and post-LT time points. HLA-G plasma levels were stable over time pre-LT and were not associated with patient characteristics. The level increased until the third month post-LT, before decreasing to a level comparable to that of the pre-LT period at one year of follow-up. Such evolution was independent of biological markers and immunosuppressive treatment, except with glucocorticoids. An HLA-G plasma level ≤ 50 ng/ml on day 8 after LT was significantly associated with a higher rejection risk. We also observed a higher percentage of rejection in the presence of donor specific anti-HLA antibodies (DSA) and an association between the increase in HLA-G plasma levels at three months and the absence of DSA. The low immunogenicity of liver allografts could be related to early elevated levels of HLA-G, which lead, in turn, to a decrease in anti-HLA antibodies, opening potential new therapeutic strategies using synthetic HLA-G proteins.
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Affiliation(s)
- Bastien Le Floc’h
- Service de Chirurgie Digestive, Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, CHU Rennes, Univ Rennes, Rennes, France
| | - Nathalie Costet
- Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, Univ Rennes, Rennes, France
| | - Nicolas Vu
- Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, Univ Rennes, Rennes, France
| | - Pénélope Bernabeu-Gentey
- Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, Univ Rennes, Rennes, France
| | - Charlotte Pronier
- Pôle de Biologie, Service de Virologie Générale et Rétrovirologie, Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, CHU Rennes, Univ Rennes, Rennes, France
| | - Pauline Houssel-Debry
- Service des Maladies du Foie (SMF), Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, CHU Rennes, Univ Rennes, Rennes, France
| | - Karim Boudjéma
- Service de Chirurgie Digestive, Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, CHU Rennes, Univ Rennes, Rennes, France
| | - Virginie Renac
- EFS Rennes, Laboratoire Histocompatibilité-Immunogénétique / Immunologie Leuco-plaquettaire (HLA/HPA), Rennes, France
| | - Michel Samson
- Inserm, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail) - UMR_S 1085, Univ Rennes, Rennes, France
| | - Laurence Amiot
- Pôle de Biologie, Laboratoire de Cytologie-Cytometrie en flux Inserm, EHESP, IRSET (Institut de Recherche en santé, Environnement et Travail) - UMR_S 1085, CHU Rennes, Univ Rennes, Rennes, France
- * E-mail:
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Arnaiz-Villena A, Suarez-Trujillo F, Juarez I, Rodríguez-Sainz C, Palacio-Gruber J, Vaquero-Yuste C, Molina-Alejandre M, Fernández-Cruz E, Martin-Villa JM. Evolution and molecular interactions of major histocompatibility complex (MHC)-G, -E and -F genes. Cell Mol Life Sci 2022; 79:464. [PMID: 35925520 PMCID: PMC9352621 DOI: 10.1007/s00018-022-04491-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/30/2022]
Abstract
Classical HLA (Human Leukocyte Antigen) is the Major Histocompatibility Complex (MHC) in man. HLA genes and disease association has been studied at least since 1967 and no firm pathogenic mechanisms have been established yet. HLA-G immune modulation gene (and also -E and -F) are starting the same arduous way: statistics and allele association are the trending subjects with the same few results obtained by HLA classical genes, i.e., no pathogenesis may be discovered after many years of a great amount of researchers’ effort. Thus, we believe that it is necessary to follow different research methodologies: (1) to approach this problem, based on how evolution has worked maintaining together a cluster of immune-related genes (the MHC) in a relatively short chromosome area since amniotes to human at least, i.e., immune regulatory genes (MHC-G, -E and -F), adaptive immune classical class I and II genes, non-adaptive immune genes like (C2, C4 and Bf) (2); in addition to using new in vitro models which explain pathogenetics of HLA and disease associations. In fact, this evolution may be quite reliably studied during about 40 million years by analyzing the evolution of MHC-G, -E, -F, and their receptors (KIR—killer-cell immunoglobulin-like receptor, NKG2—natural killer group 2-, or TCR-T-cell receptor—among others) in the primate evolutionary lineage, where orthology of these molecules is apparently established, although cladistic studies show that MHC-G and MHC-B genes are the ancestral class I genes, and that New World apes MHC-G is paralogous and not orthologous to all other apes and man MHC-G genes. In the present review, we outline past and possible future research topics: co-evolution of adaptive MHC classical (class I and II), non-adaptive (i.e., complement) and modulation (i.e., non-classical class I) immune genes may imply that the study of full or part of MHC haplotypes involving several loci/alleles instead of single alleles is important for uncovering HLA and disease pathogenesis. It would mainly apply to starting research on HLA-G extended haplotypes and disease association and not only using single HLA-G genetic markers.
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Affiliation(s)
- Antonio Arnaiz-Villena
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain.
| | - Fabio Suarez-Trujillo
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Ignacio Juarez
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Carmen Rodríguez-Sainz
- Instituto de Investigaciones Sanitarias Gregorio Marañón, Hospital Gregorio Marañón, Madrid, Spain
| | - José Palacio-Gruber
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Christian Vaquero-Yuste
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Marta Molina-Alejandre
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Eduardo Fernández-Cruz
- Instituto de Investigaciones Sanitarias Gregorio Marañón, Hospital Gregorio Marañón, Madrid, Spain
| | - José Manuel Martin-Villa
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
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4
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Liu S, Bos NA, Verschuuren EAM, van Baarle D, Westra J. Biological Characteristics of HLA-G and Its Role in Solid Organ Transplantation. Front Immunol 2022; 13:902093. [PMID: 35769475 PMCID: PMC9234285 DOI: 10.3389/fimmu.2022.902093] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/19/2022] [Indexed: 11/18/2022] Open
Abstract
Organ transplantation is a lifesaving option for patients with advanced diseases. Rejection is regarded as one of the most severe risk factors post-transplantation. A molecule that contributes to immune tolerance and resisting rejection is human leukocyte antigen (HLA)-G, which belongs to the non-classical major histocompatibility complex class (MHC) I family. HLA-G was originally found to play a role during pregnancy to maintain immune tolerance between mother and child. It is expressed in the placenta and detected in several body fluids as soluble factor as well as different membrane isoforms on cells. Recent findings on HLA-G show that it can also play multifaceted roles during transplantation. This review will explain the general characteristics and biological function of HLA-G and summarize the views supporting the tolerogenic and other roles of HLA-G to better understand its role in solid organ transplantation (SOT) and its complications. Finally, we will discuss potential future research on the role of HLA-G in prevention, diagnosis, and treatment in SOT.
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Affiliation(s)
- Siqi Liu
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Nicolaas A. Bos
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Erik A. M. Verschuuren
- Department of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Debbie van Baarle
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, Groningen, Netherlands
| | - Johanna Westra
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- *Correspondence: Johanna Westra,
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Darbas S, Yilmaz VT, Kocak H, Kisaoglu A, Demiryilmaz I, Aydinli B, Arslan HS, Ucar F. New markers for predictions of acute and chronic rejection and graft outcomes in kidney transplant recipients; HLA-G gene 3'UTR 14 bp polymorphism and sHLA-G. Gene 2021; 790:145712. [PMID: 33984446 DOI: 10.1016/j.gene.2021.145712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/19/2021] [Accepted: 05/06/2021] [Indexed: 01/10/2023]
Abstract
The aim of this study was to evaluate the relation of Human Leukocyte Antigen-G (HLA-G) 14 bp ins/del (insertion/deletion) polymorphism and soluble HLA-G (sHLA-G) level with rejection in kidney transplant recipients. The study was planned as a case-control study involving two hundred fifty kidney transplant recipients. The case group consisted of 125 (female/male: 56/69) kidney transplant recipients diagnosed with acute (n = 52) and chronic rejection (n = 73). The control group consisted of one hundred twenty-five kidney transplant patients with no acute or chronic rejection matched by gender and age in the case group. The sHLA-G level in the recipient's plasma (at the time of rejection for the case, the same time as the case after the transplant for control) was analyzed by Enzyme-Linked Immunosorbent Assay (ELISA). HLA-G 3' untranslated region (3'UTR) polymorphism of recipient and donor was determined using agarose gel electrophoresis and DNA sequencing method. In our study, it was shown that acute rejection rate increased 1.06 times and chronic rejection rate increased 1.14 times in kidney transplant recipients with low serum sHLA-G levels. The rejection patients with the HLA-G 14 bp del/del genotype had higher sHLA-G levels post-transplantation. The frequency of acute rejection was lower in patients with HLA-G 14 bp del/del polymorphism than those with ins/ins and ins/del polymorphisms. This study proposes that HLA-G 3'UTR polymorphism and sHLA-G level might be useful in prediction of rejection in kidney transplant recipients.
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Affiliation(s)
- Sule Darbas
- Department of Medical Biology and Genetics, Akdeniz University Faculty of Medicine, Antalya, Turkey.
| | - Vural Taner Yilmaz
- Division of Nephrology, Department of Internal Medicine, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
| | - Huseyin Kocak
- Division of Nephrology, Department of Internal Medicine, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
| | - Abdullah Kisaoglu
- Department of General Surgery, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
| | - Ismail Demiryilmaz
- Department of General Surgery, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
| | - Bulent Aydinli
- Department of General Surgery, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
| | - Habibe Sema Arslan
- Department of Medical Biology and Genetics, Akdeniz University Faculty of Medicine, Antalya, Turkey.
| | - Fahri Ucar
- Department of Medical Biology and Genetics, Akdeniz University Faculty of Medicine, Antalya, Turkey; Tuncer Karpuzoglu Transplantation Center, Akdeniz University Hospital, Antalya, Turkey.
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Bu X, Zhong J, Li W, Cai S, Gao Y, Ping B. Immunomodulating functions of human leukocyte antigen-G and its role in graft-versus-host disease after allogeneic hematopoietic stem cell transplantation. Ann Hematol 2021; 100:1391-1400. [PMID: 33709198 PMCID: PMC8116272 DOI: 10.1007/s00277-021-04486-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/02/2021] [Indexed: 11/28/2022]
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative therapeutic strategy to treat several hematological malignancies and non-hematological malignancies. However, graft-versus-host disease (GVHD) is a frequent and serious transplant-related complication which dramatically restrains the curative effect of allo-HSCT and a significant cause of morbidity and mortality in allogeneic HCT recipients. Effective prevention of GVHD mainly depends on the induction of peripheral immune tolerance. Human leukocyte antigen-G (HLA-G) is a non-classical MHC class I molecule with a strong immunosuppressive function, which plays a prominent role in immune tolerance. HLA-G triggers different reactions depending on the activation state of the immune cells and system. It also exerts a long-term immune tolerance mechanism by inducing regulatory cells. In this present review, we demonstrate the immunomodulatory properties of human leukocyte antigen-G and highlight the role of HLA-G as an immune regulator of GVHD. Furthermore, HLA-G could also serve as a good predictor of GVHD and represent a new therapeutic target for GVHD.
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Affiliation(s)
- Xiaoyin Bu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Jinman Zhong
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Weiru Li
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Shengchun Cai
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China
| | - Ya Gao
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China.
| | - Baohong Ping
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China. .,Department of Huiqiao, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, China.
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7
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Closa L, Vidal F, Herrero MJ, Caro JL. High-throughput genotyping of HLA-G, HLA-F, MICA, and MICB and analysis of frequency distributions in healthy blood donors from Catalonia. HLA 2021; 97:420-427. [PMID: 33599111 DOI: 10.1111/tan.14221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/19/2022]
Abstract
Similarly to HLA class I molecules, certain non-classical HLA class I genes and MHC class I polypeptide-related sequences A and B (MICA and MICB) act as ligands for KIR and NKG2D natural killer receptors. Although these genes are less polymorphic than HLA class I, few studies have analyzed their association with diseases. Information on allele frequencies in healthy donors is needed to map their distribution worldwide. This study is the first to analyze high-resolution HLA-G, HLA-F, MICA, and MICB allele frequencies using a novel high-throughput next generation-sequencing method. We analyzed DNA samples from 96 unrelated blood donors resident in Catalonia, Spain, and registered in the Barcelona Blood and Tissue Bank. Using the first two fields of the HLA nomenclature, we detected six HLA-G and two HLA-F alleles. The most frequent alleles were HLA-G*01:01 (77.08%) and HLA-F*01:01(84.90%). When the four fields were analyzed, we detected 16 and 10 alleles, respectively. Nineteen alleles were detected for MICA and 10 for MICB. The most frequent alleles in these cases were MICA*008:01 (16.15%) and MICB*005:02 (46.84%). All frequencies were in Hardy Weinberg equilibrium except MICA. We also estimated maximum-likelihood haplotype frequencies and calculated corresponding linkage disequilibrium (LD) values and found that few allele pairs were in disequilibrium. Strong LD between MICA and HLA-B (using data from a previous study) was observed. Our findings will be useful for guiding further research evaluating the functional role of these genes in different diseases and populations.
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Affiliation(s)
- Laia Closa
- Histocompatibility and Immunogenetics Laboratory, Blood and Tissue Bank, Barcelona, Spain.,Transfusional Medicine Group, Vall d'Hebron Research Institute-Autonomous University of Barcelona (VHIR-UAB), Barcelona, Spain
| | - Francisco Vidal
- Transfusional Medicine Group, Vall d'Hebron Research Institute-Autonomous University of Barcelona (VHIR-UAB), Barcelona, Spain.,Congenital Coagulopathy Laboratory, Blood and Tissue Bank, Barcelona, Spain.,CIBER of Cardiovascular Diseases, Barcelona, Spain
| | - Maria J Herrero
- Histocompatibility and Immunogenetics Laboratory, Blood and Tissue Bank, Barcelona, Spain
| | - Jose L Caro
- Department of Immunology, Hospital Clínic, Barcelona, Spain
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Kumano S, Okushi Y, Fujimoto K, Adachi H, Furuichi K, Yokoyama H. Role and expression of non-classical human leukocyte antigen-G in renal transplanted allografts. Clin Exp Nephrol 2021; 25:428-438. [PMID: 33398603 DOI: 10.1007/s10157-020-01999-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/19/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND The non-classical class I molecule human leukocyte antigen-G (HLA-G) has great potential to modulate the immune response. However, the mechanism underlying HLA-G induction remains unknown. Therefore, this study aimed to determine the factors that induce HLA-G expression on proximal tubular epithelial cells (pTECs) in renal transplanted allografts in vivo and in vitro. METHODS This study included 40 adult Japanese patients with renal allografts (35 and five patients with kidneys from living and deceased donors, respectively) who survived for at least 1 year. We evaluated HLA-G1/5 expression using an immunofluorescence method and investigated the induction of HLA-G expression in primary cultured human pTECs by cytokines and immunosuppressants. RESULTS The HLA-G expression was identified in the perinuclear region or on the basement membrane of pTECs of renal biopsy tissue in 12 (30%) of 40 patients at 2-4 weeks and at 1 year following transplantation. A reduction of 30% in the estimated glomerular filtration rate was lower in the HLA-G-positive group than that of the negative group (p = 0.016). Cox proportional hazard models also demonstrated that HLA-G1/5 expression on pTECs was an independent predictor of improved renal allograft function (hazard ratio, 0.189; 95% CI 0.041-0.850, p = 0.030). Interferon-beta was the most powerful inducer of HLA-G expression in vitro, whereas the immunosuppressants everolimus, tacrolimus, cyclosporin, and dexamethasone did not induce any expression. CONCLUSION Unlike immunosuppressants, acquired HLA-G expression might confer long-term renal preservation effects in renal transplanted allografts.
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Affiliation(s)
- Sho Kumano
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan.
| | - Yuki Okushi
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Keiji Fujimoto
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Hiroki Adachi
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Kengo Furuichi
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Hitoshi Yokoyama
- Department of Nephrology, Kanazawa Medical University School of Medicine, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan.
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9
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NKG2A/CD94 Is a New Immune Receptor for HLA-G and Distinguishes Amino Acid Differences in the HLA-G Heavy Chain. Int J Mol Sci 2020; 21:ijms21124362. [PMID: 32575403 PMCID: PMC7352787 DOI: 10.3390/ijms21124362] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/08/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Natural killer (NK) cell therapies are a tool to antagonize a dysfunctional immune system. NK cells recognize malignant cells, traffic to a tumor location, and infiltrate the solid tumor. The immune checkpoint molecule human leukocyte antigen (HLA)-G is upregulated on malignant cells but not on healthy surrounding cells, the requirement of understanding the basis of receptor mediated events at the HLA-G/NK cell interface becomes obvious. The NK cell receptors ILT2 and KIR2DL4 have been described to bind to HLA-G; however, their differential function and expression levels on NK cell subsets suggest the existence of an unreported receptor. Here, we performed a ligand-based receptor capture on living cells utilizing sHLA-G*01:01 molecules coupled to TriCEPS and bound to NK cells followed by mass spectrometric analyses. We could define NKG2A/CD94 as a cognate receptor of HLA-G. To verify the results, we used the reciprocal method by expressing recombinant soluble heterodimeric NKG2A/CD94 molecules and used them to target HLA-G*01:01 expressing cells. NKG2A/CD94 could be confirmed as an immune receptor of HLA-G*01:01. Despite HLA-G is marginal polymorphic, we could previously demonstrate that the most common allelic subtypes HLA-G*01:01/01:03 and 01:04 differ in peptide repertoire, their engagement to NK cells, their catalyzation of dNK cell proliferation and their impact on NK cell development. Continuing these studies with regard to NKG2A/CD94 engagement we engineered recombinant single antigen presenting K562 cells and targeted the surface expressed HLA-G*01:01, 01:03 or 01:04 molecules with NKG2A/CD94. Specificity and sensitivity of HLA-G*01:04/NKG2A/CD94 engagement could be significantly verified. The binding affinity decreases when using K562-G*01:03 or K562-G*01:01 cells as targets. These results demonstrate that the ligand-receptor assignment between HLA-G and NKG2A/CD94 is dependent of the amino acid composition in the HLA-G heavy chain. Understanding the biophysical basis of receptor-mediated events that lead to NK cell inhibition would help to remove non-tumor reactive cells and support personalized mild autologous NK cell therapies.
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10
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Bertol BC, Dias FC, da Silva DM, Zambelli Ramalho LN, Donadi EA. Human Antigen Leucocyte (HLA)-G and HLA-E are differentially expressed in pancreatic disorders. Hum Immunol 2019; 80:948-954. [PMID: 31561913 DOI: 10.1016/j.humimm.2019.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Little information is available regarding the expression of the immunomodulatory Human Leukocyte Antigen (HLA)-G and -E molecules in pancreatic disorders. AIM To analyze HLA-G and -E expression in specimens of alcoholic chronic pancreatitis (ACP), idiopathic chronic pancreatitis (ICP), type 1 (T1D) and type 2 diabetes (T2D) and in histologically normal pancreas (HNP). METHODS HLA-G and -E expression (ACP = 30, ICP = 10, T1D = 10, T2D = 30 and HNP = 20) was evaluated by immunohistochemistry in three different areas (acini, islets and inflammatory infiltrate). RESULTS Acini and islets from HNP specimens exhibited higher HLA-G and -E expression compared to corresponding areas from all other patient groups. In inflammatory infiltrate, HLA-G and -E expression was observed only among the pancreatic disorders. We observed higher HLA-G and -E expression in acini from T2D compared to ACP, as well as higher HLA-G expression compared to ICP. CONCLUSION The decreased expression of HLA-G and -E in islets and acini together with the expression of these molecules in the inflammatory infiltrating cells were shared features among chronic inflammatory and autoimmune pancreatic disorders evaluated in this study, possibly reflecting tissue damage.
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Affiliation(s)
- Bruna Cristina Bertol
- Postgraduate Program of Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil.
| | - Fabrício César Dias
- Department of Medicine, Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil.
| | - Deisy Mara da Silva
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil.
| | - Leandra Náira Zambelli Ramalho
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil.
| | - Eduardo Antônio Donadi
- Postgraduate Program of Basic and Applied Immunology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil; Department of Medicine, Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, 3900 Bandeirantes Avenue, ZIP Code: 14049-900 Ribeirão Preto, Brazil.
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11
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Foschi V, Bortolotti D, Doyle AF, Stratigou V, Stephens L, Trivedi P, Rinaldi R, Padovan M, Bortoluzzi A, Lightstone L, Cairns TD, Botto M, Cook TH, Rizzo R, Govoni M, Pickering MC. Analysis of HLA-G expression in renal tissue in lupus nephritis: a pilot study. Lupus 2019; 28:1091-1100. [PMID: 31291846 DOI: 10.1177/0961203319860582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND The study aimed to investigate whether HLA-G antigen is expressed in the kidneys of patients affected by lupus nephritis (LN) and whether its detection in renal biopsies could be adopted as a marker of treatment response and prognosis. METHODS Thirty renal biopsies from patients with LN were selected and analyzed through immunohistochemistry. Laboratory and clinical data were retrospectively collected at baseline, 6 and 12 months and at the latest clinical appointment. A number of patients (63.3%) were treated with rituximab (RTX) +/- methylprednisolone in the induction phase. The expression of HLA-G in glomeruli, tubules and infiltrating cells was examined and compared between lupus patients who achieved either complete or partial renal response and those who did not respond to treatment. RESULTS HLA-G staining was observed in the glomeruli of 20 of 30 samples from patients with LN. The expression of the antigen was detected in podocytes, along glomerular capillary walls, on parietal glomerular epithelial cells and within the juxtaglomerular apparatus. Seventy per cent of patients whose glomeruli expressed HLA-G achieved partial or complete response at 6 months and 75% at the latest available follow up compared with 30% and 40%, respectively, of those who did not show any expression. The pattern of staining in tubules and infiltrating cells was highly variable precluding any clinical correlation. CONCLUSION This study demonstrates that HLA-G is expressed in renal tissue in LN. Our retrospective data suggest that its expression could correlate with response to treatment.
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Affiliation(s)
- V Foschi
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy.,2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - D Bortolotti
- 3 Department of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Italy
| | - A F Doyle
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - V Stratigou
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - L Stephens
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - P Trivedi
- 4 Department of Pathology, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - R Rinaldi
- 5 Section of Pathology and Biomolecular Diagnostics, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
| | - M Padovan
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - A Bortoluzzi
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - L Lightstone
- 6 Section of Renal and Vascular Inflammation, Department of Medicine, Imperial College London, UK.,7 Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - T D Cairns
- 7 Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - M Botto
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - T H Cook
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - R Rizzo
- 3 Department of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Italy
| | - M Govoni
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - M C Pickering
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
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12
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Janssen M, Thaiss F, Nashan B, Koch M, Thude H. Donor derived HLA-G polymorphisms have a significant impact on acute rejection in kidney transplantation. Hum Immunol 2019; 80:176-183. [PMID: 30610894 DOI: 10.1016/j.humimm.2018.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 12/04/2018] [Accepted: 12/31/2018] [Indexed: 12/22/2022]
Abstract
Human leucocyte antigen G (HLA-G) is a non-classical HLA-class I antigen that exerts immunoregulatory functions. The polymorphisms 14-base pair (bp) insertion/deletion (ins/del) (rs1704) and +3142C > G (rs1063320) could modify the expression level of HLA-G. We genotyped 175 kidney recipients (41 with acute rejection and 134 without rejection) and additionally the corresponding donors for both polymorphisms in order to assess their impact on acute rejections one year after transplantation. In addition, we analyzed soluble HLA-G (sHLA-G) levels in sera of 32 living kidney donors and compared the sHLA-G levels in terms of the present genotype. In kidney transplant recipients we did not observe an impact of the 14-bp ins/ins and the +3142GG genotypes on acute rejection. In contrast, we found a higher frequency of these genotypes in the donors of the no-rejection collective compared to the rejection collective (4.9% vs. 24.6%; p = 0.010; 9.8% vs. 31.3%; p = 0.006). Soluble HLA-G levels were highest in healthy kidney donors homozygous for the 14-bp insertion. We conclude that the HLA-G polymorphisms of the donor are of importance for susceptibility of acute rejection in kidney transplantation. We suggest that the 14-bp ins/ins and the +3142GG genotypes are protective against kidney transplant rejection.
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Affiliation(s)
- Maike Janssen
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany; University Hospital Heidelberg, Department for Hematology, Oncology and Rheumatology, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
| | - Friedrich Thaiss
- University Medical Center Hamburg-Eppendorf, Center for Internal Medicine, Martinistraße 52, 20246 Hamburg, Germany
| | - Björn Nashan
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany; University of Science and Technology, Hefei, Anhui, China
| | - Martina Koch
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany; University Medical Center of the Johannes Gutenberg University Mainz, Department of General, Visceral, and Abdominal Surgery, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Hansjörg Thude
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany
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13
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Lazarte J, Adamson MB, Tumiati LC, Delgado DH. 10-Year Experience with HLA-G in Heart Transplantation. Hum Immunol 2018; 79:587-593. [PMID: 29859206 DOI: 10.1016/j.humimm.2018.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 05/19/2018] [Accepted: 05/21/2018] [Indexed: 11/19/2022]
Abstract
The Human Leukocyte Antigen-G (HLA-G) is a MHC-class Ib molecule with robust immunomodulatory properties; in transplant, it inhibits cytotoxic activity of immune cells and thus has a pivotal role in protecting the allograft from immune attack. The present review details a 10-year experience investigating the influence of HLA-G on heart transplantation, allograft rejection and cardiac allograft vasculopathy development. Exploration of HLA-G in transplantation began with the initial findings of its increased expression in allograft hearts. Since then, HLA-G has been recognized as an important factor in transplant immunology. We discuss inducers of HLA-G expression, and the importance of HLA-G as a potential biomarker in allograft rejection and heart failure. We also highlight the importance of polymorphisms and how they may influence both HLA-G expression and clinical outcomes. There remains much to be done in this field, however we hope that findings from our group and other groups will ignite interest and facilitate further expansion of HLA-G research in transplantation.
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Affiliation(s)
- Julieta Lazarte
- Departments of Medicine, Schulich School of Medicine, Western University, London, Ontario, Canada.
| | - Mitchell B Adamson
- Department of Medicine, Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Laura C Tumiati
- Department of Cardiovascular Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Diego H Delgado
- Department of Cardiology, Hear Failure and Transplant Program, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
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14
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Dias FC, Bertol BC, Poras I, Souto BM, Mendes-Junior CT, Castelli EC, Gineau L, Sabbagh A, Rouas-Freiss N, Carosella ED, Donadi EA, Moreau P. The genetic diversity within the 1.4 kb HLA-G 5' upstream regulatory region moderately impacts on cellular microenvironment responses. Sci Rep 2018; 8:5652. [PMID: 29618829 PMCID: PMC5884815 DOI: 10.1038/s41598-018-24009-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/15/2018] [Indexed: 12/21/2022] Open
Abstract
The HLA-G 5'URR extending 1.4 kb from the ATG presents a unique set of regulatory elements among HLA genes. Several variable sites have been described that coincide with or are close to these elements, thus HLA-G 5'URR polymorphism might influence the HLA-G expression level. We cloned the ten most frequent HLA-G 5'URR haplotypes to evaluate their activity on a luciferase reporter gene in HLA-G+ cell lines (JEG-3/choriocarcinoma and FON+/melanoma). We also investigated associations between the plasma HLA-G (sHLA-G) levels and the HLA-G 5'URR variability in 157 healthy individuals. Cell lines were transfected with pGL3-Basic vector constructions containing HLA-G 5'URR sequences. The G010101a (in JEG-3) and G010101b (in FON+) haplotypes exhibited higher promoter activity, whereas the G010101d (in JEG-3) and G010102a (in FON+) haplotypes exhibited lower promoter activity. In the presence of HLA-G inducers (interferon-β and progesterone) or repressors (cyclopamine) HLA-G promoter activity was modulated, but certain haplotypes exhibited differential responses. No strict association was observed between plasma sHLA-G levels and the 5'URR haplotypes or genotypes; however, the G010101b haplotype was underrepresented among HLA-G-negative plasmas. Therefore, the HLA-G 5'URR polymorphism may have an impact on the modulation of HLA-G gene expression, but alone provides a limited predictive value for sHLA-G levels in vivo.
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Affiliation(s)
- Fabrício C Dias
- Department of Medicine, Division of Clinical Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil.,Commissariat à l'Energie Atomique et aux Energies Alternatives, Direction de la Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France.,Université Paris-Diderot, Sorbonne Paris-Cité, UMR_E5, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France
| | - Bruna C Bertol
- Department of Biochemistry and Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil
| | - Isabelle Poras
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Direction de la Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France.,Université Paris-Diderot, Sorbonne Paris-Cité, UMR_E5, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France
| | - Bruno M Souto
- Department of Medicine, Division of Clinical Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil
| | - Celso T Mendes-Junior
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil
| | - Erick C Castelli
- São Paulo State University (UNESP), Department of Pathology, School of Medicine, Botucatu, State of São, Paulo, ZIP Code 18.618-687, Brazil
| | - Laure Gineau
- UMR 216-MERIT, Institut de Recherche pour le Développement, Faculté de Pharmacie de Paris - Université Paris Descartes, COMUE Sorbonne Paris-Cité, Paris, ZIP Code 75006, France
| | - Audrey Sabbagh
- UMR 216-MERIT, Institut de Recherche pour le Développement, Faculté de Pharmacie de Paris - Université Paris Descartes, COMUE Sorbonne Paris-Cité, Paris, ZIP Code 75006, France
| | - Nathalie Rouas-Freiss
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Direction de la Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France.,Université Paris-Diderot, Sorbonne Paris-Cité, UMR_E5, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France
| | - Edgardo D Carosella
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Direction de la Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France.,Université Paris-Diderot, Sorbonne Paris-Cité, UMR_E5, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France
| | - Eduardo A Donadi
- Department of Medicine, Division of Clinical Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil.,Department of Biochemistry and Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, ZIP Code 14.049-900, Brazil
| | - Philippe Moreau
- Commissariat à l'Energie Atomique et aux Energies Alternatives, Direction de la Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France. .,Université Paris-Diderot, Sorbonne Paris-Cité, UMR_E5, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, Paris, ZIP code 75010, France.
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15
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Castelli EC, Gerasimou P, Paz MA, Ramalho J, Porto IO, Lima TH, Souza AS, Veiga-Castelli LC, Collares CV, Donadi EA, Mendes-Junior CT, Costeas P. HLA-G variability and haplotypes detected by massively parallel sequencing procedures in the geographicaly distinct population samples of Brazil and Cyprus. Mol Immunol 2017; 83:115-126. [DOI: 10.1016/j.molimm.2017.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/18/2017] [Accepted: 01/20/2017] [Indexed: 12/11/2022]
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16
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Thude H, Janssen M, Sterneck M, Nashan B, Koch M. 14-bp ins/del polymorphism and +3142C>G SNP of the HLA-G gene have a significant impact on acute rejection after liver transplantation. Hum Immunol 2016; 77:1159-1165. [PMID: 27664842 DOI: 10.1016/j.humimm.2016.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/18/2016] [Accepted: 09/20/2016] [Indexed: 01/01/2023]
Abstract
Expression of human leukocyte antigen G (HLA-G) has been associated with increased graft survival and decreased rejection episodes. It has been described that the HLA-G 14-base pair (bp) insertion/deletion (ins/del) (rs66554220) and +3142C>G (rs1063320) gene polymorphisms modify the expression level of HLA-G. The aim of the study was to investigate whether these HLA-G polymorphisms have an impact on acute rejection after liver transplantation. In total, 146 liver transplant recipients (57 with acute rejection and 89 without acute rejection) and 99 corresponding liver donors were genotyped for both polymorphisms. In liver transplantation the 14-bp ins/ins and the +3142GG genotypes are more frequent in recipients without rejection compared to recipients with rejection (3.5% vs. 31.5%, p=<0.001; 12.3% vs. 41.6%, p=<0.001) demonstrating an association with protection from acute rejection. In contrast, in liver donors we could not reveal an association. We conclude that 14-bp ins/ins and +3142GG genotypes of HLA-G in liver transplant recipients are of importance for prediction of acute rejection after liver transplantation. Thus genotyping of liver recipients for both polymorphisms might be useful to stratify liver transplant recipients according to the risk of acute liver transplant rejection.
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Affiliation(s)
- Hansjörg Thude
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany.
| | - Maike Janssen
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany
| | - Martina Sterneck
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany
| | - Björn Nashan
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany
| | - Martina Koch
- University Medical Center Hamburg-Eppendorf, Department of Hepatobiliary and Transplant Surgery, Martinistraße 52, 20246 Hamburg, Germany
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17
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Lazarte J, Tumiati LC, Rao V, Delgado DH. New Developments in HLA-G in Cardiac Transplantation. Hum Immunol 2015; 77:740-5. [PMID: 26707934 DOI: 10.1016/j.humimm.2015.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 12/08/2015] [Accepted: 12/08/2015] [Indexed: 12/20/2022]
Abstract
Human Leukocyte Antigen-G (HLA-G) is a non-classical class 1b protein, whose gene is located on chromosome 6 (6p21.31). HLA-G inhibits the immune cells' cytotoxic activity by interacting with specific receptors on their membranes. Since it is a naturally occurring immune modulator, HLA-G has been investigated in transplantation. Indeed, a number of investigations reveal that HLA-G expression is influenced by genetic polymorphisms and in turn, those polymorphisms are associated with detrimental or beneficial outcomes in various pathological situations. The present review introduces the HLA-G molecule, the gene and its polymorphisms. It focuses on the expression of HLA-G and the role of polymorphisms primarily in heart transplant outcomes, secondarily in other transplant organs, as well as the role of the allograft and effect of medical therapy. We discuss the limitations in HLA-G transplant investigations and future directions. The immune inhibiting activity of HLA-G has a great deal of potential for its utilization in enhancing diagnostic, preventive and therapeutic strategies against rejection in the setting of transplantation.
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Affiliation(s)
- Julieta Lazarte
- Division of Cardiovascular Surgery, Peter Munk Cardiac Centre, Toronto General Hospital-University Health Network, Toronto, Ontario, Canada.
| | - Laura C Tumiati
- Division of Cardiovascular Surgery, Peter Munk Cardiac Centre, Toronto General Hospital-University Health Network, Toronto, Ontario, Canada
| | - Vivek Rao
- Division of Cardiovascular Surgery, Peter Munk Cardiac Centre, Toronto General Hospital-University Health Network, Toronto, Ontario, Canada
| | - Diego H Delgado
- Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital-University Health Network, Toronto, Ontario, Canada
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18
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Žilinská Z, Bandžuchová H, Chrastina M, Trebatický B, Breza J, Handzušová M, Kuba D, Tirpáková J, Pavlechová M, Dedinská I, Rychlý B, Poláková K. Expression of HLA-G transcripts in graft biopsy samples of renal transplant recipients. Transpl Immunol 2015; 33:159-65. [DOI: 10.1016/j.trim.2015.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 10/02/2015] [Accepted: 10/04/2015] [Indexed: 10/22/2022]
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19
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The Mechanisms of Human Renal Epithelial Cell Modulation of Autologous Dendritic Cell Phenotype and Function. PLoS One 2015; 10:e0134688. [PMID: 26230727 PMCID: PMC4521940 DOI: 10.1371/journal.pone.0134688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/13/2015] [Indexed: 01/08/2023] Open
Abstract
Proximal tubule epithelial cells (PTEC) of the kidney line the proximal tubule downstream of the glomerulus and play a major role in the re-absorption of small molecular weight proteins that may pass through the glomerular filtration process. In the perturbed disease state PTEC also contribute to the inflammatory disease process via both positive and negative mechanisms via the production of inflammatory cytokines which chemo-attract leukocytes and the subsequent down-modulation of these cells to prevent uncontrolled inflammatory responses. It is well established that dendritic cells are responsible for the initiation and direction of adaptive immune responses. Both resident and infiltrating dendritic cells are localised within the tubulointerstitium of the renal cortex, in close apposition to PTEC, in inflammatory disease states. We previously demonstrated that inflammatory PTEC are able to modulate autologous human dendritic cell phenotype and functional responses. Here we extend these findings to characterise the mechanisms of this PTEC immune-modulation using primary human PTEC and autologous monocyte-derived dendritic cells (MoDC) as the model system. We demonstrate that PTEC express three inhibitory molecules: (i) cell surface PD-L1 that induces MoDC expression of PD-L1; (ii) intracellular IDO that maintains the expression of MoDC CD14, drives the expression of CD80, PD-L1 and IL-10 by MoDC and inhibits T cell stimulatory capacity; and (iii) soluble HLA-G (sHLA-G) that inhibits HLA-DR and induces IL-10 expression by MoDC. Collectively the results demonstrate that primary human PTEC are able to modulate autologous DC phenotype and function via multiple complex pathways. Further dissection of these pathways is essential to target therapeutic strategies in the treatment of inflammatory kidney disorders.
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Sampangi S, Wang X, Beagley KW, Klein T, Afrin S, Healy H, Wilkinson R, Kassianos AJ. Human proximal tubule epithelial cells modulate autologous B-cell function. Nephrol Dial Transplant 2015; 30:1674-83. [DOI: 10.1093/ndt/gfv242] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/13/2015] [Indexed: 01/01/2023] Open
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Amiot L, Vu N, Samson M. Biology of the immunomodulatory molecule HLA-G in human liver diseases. J Hepatol 2015; 62:1430-7. [PMID: 25772038 DOI: 10.1016/j.jhep.2015.03.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 02/05/2015] [Accepted: 03/02/2015] [Indexed: 01/16/2023]
Abstract
The non-classical human leukocyte antigen-G (HLA-G), plays an important role in inducing tolerance, through its immunosuppressive effects on all types of immune cells. Immune tolerance is a key issue in the liver, both in liver homeostasis and in the response to liver injury or cancer. It would therefore appear likely that HLA-G plays an important role in liver diseases. Indeed, this molecule was recently shown to be produced by mast cells in the livers of patients infected with hepatitis C virus (HCV). Furthermore, the number of HLA-G-positive mast cells was significantly associated with fibrosis progression. The generation of immune tolerance is a role common to both HLA-G, as a molecule, and the liver, as an organ. This review provides a summary of the evidence implicating HLA-G in liver diseases. In the normal liver, HLA-G transcripts can be detected, but there is no HLA-G protein. However, HLA-G protein is detectable in the liver tissues and/or plasma of patients suffering from hepatocellular carcinoma, hepatitis B or C, or visceral leishmaniasis and in liver transplant recipients. The cells responsible for producing HLA-G differ between diseases. HLA-G expression is probably induced by microenvironmental factors, such as cytokines. The expression of HLA-G receptors, such as ILT2, ILT4, and KIRD2L4, on liver cells has yet to be investigated, but these receptors have been detected on all types of immune cells, and such cells are present in liver. The tolerogenic properties of HLA-G explain its deleterious effects in cancers and its beneficial effects in transplantation. Given the key role of HLA-G in immune tolerance, new therapeutic agents targeting HLA-G could be tested for the treatment of these diseases in the future.
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Affiliation(s)
- Laurence Amiot
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement & Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Fédération de Recherche BioSit de Rennes UMS 3480, F-35043 Rennes, France; Department of Biology, University Hospital Pontchaillou, CHU Pontchaillou, Rennes, France.
| | - Nicolas Vu
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement & Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Fédération de Recherche BioSit de Rennes UMS 3480, F-35043 Rennes, France
| | - Michel Samson
- Institut National de la Santé et de la Recherche Médicale (Inserm), U.1085, Institut de Recherche Santé Environnement & Travail (IRSET), F-35043 Rennes, France; Université de Rennes 1, F-35043 Rennes, France; Fédération de Recherche BioSit de Rennes UMS 3480, F-35043 Rennes, France
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EXP CLIN TRANSPLANTExp Clin Transplant 2015; 13. [DOI: 10.6002/ect.mesot2014.p225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Brugière O, Thabut G, Krawice-Radanne I, Rizzo R, Dauriat G, Danel C, Suberbielle C, Mal H, Stern M, Schilte C, Pretolani M, Carosella ED, Rouas-Freiss N. Role of HLA-G as a predictive marker of low risk of chronic rejection in lung transplant recipients: a clinical prospective study. Am J Transplant 2015; 15:461-71. [PMID: 25488753 DOI: 10.1111/ajt.12977] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 01/25/2023]
Abstract
Human leukocyte antigen G (HLA-G) expression is thought to be associated with a tolerance state following solid organ transplantation. In a lung transplant (LTx) recipient cohort, we assessed (1) the role of HLA-G expression as a predictor of graft acceptance, and (2) the relationship between (i) graft and peripheral HLA-G expression, (ii) HLA-G expression and humoral immunity and (iii) HLA-G expression and lung microenvironment. We prospectively enrolled 63 LTx recipients (median follow-up 3.26 years [min: 0.44-max: 5.03]). At 3 and 12 months post-LTx, we analyzed graft HLA-G expression by immunohistochemistry, plasma soluble HLA-G (sHLA-G) level by enzyme-linked immunosorbent assay, bronchoalveolar lavage fluid (BALF) levels of cytokines involved in chronic lung allograft dysfunction (CLAD) and anti-HLA antibodies (Abs) in serum. In a time-dependent Cox model, lung HLA-G expression had a protective effect on CLAD occurrence (hazard ratio: 0.13 [0.03-0.58]; p = 0.008). The same results were found when computing 3-month and 1-year conditional freedom from CLAD (p = 0.03 and 0.04, respectively [log-rank test]). Presence of anti-HLA Abs was inversely associated with graft HLA-G expression (p = 0.02). Increased BALF level of transforming growth factor-β was associated with high plasma sHLA-G level (p = 0.02). In conclusion, early graft HLA-G expression in LTx recipients with a stable condition was associated with graft acceptance in the long term.
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Affiliation(s)
- O Brugière
- Service de Pneumologie B et de Transplantation Pulmonaire, Centre Hospitalier Universitaire (CHU) Bichat-Claude Bernard, Paris, France; Faculté de Médecine Denis Diderot, Université Paris 7, Paris, France; Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France; DHU Fire, Paris, France; CEA, Institut des Maladies Emergentes et des Therapies Innovantes (IMETI), Service de Recherche en Hemato-Immunologie (SRHI), Hopital Saint-Louis, Paris, France; Sorbonne Paris Cité, University Paris Diderot, IUH, Hopital Saint-Louis, Paris, France
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Abstract
Human leukocyte antigen-G (HLA-G) is a low polymorphic nonclassical HLA-I molecule restrictively expressed and with suppressive functions. HLA-G gene products are quite complex, with seven HLA-G isoforms, four membrane bound, and other three soluble isoforms that can suffer different posttranslational modifications or even complex formations. In addition, HLA-G has been described included in exosomes. In this review we will focus on HLA-G biochemistry with special emphasis to the mechanisms that regulate its expression and how the protein modifications affect the quantification in biological fluids.
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Bortolotti D, Gentili V, Rotola A, Cassai E, Rizzo R, Luca DD. Impact of HLA-G analysis in prevention, diagnosis and treatment of pathological conditions. World J Methodol 2014; 4:11-25. [PMID: 25237627 PMCID: PMC4145573 DOI: 10.5662/wjm.v4.i1.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 12/28/2013] [Accepted: 01/16/2014] [Indexed: 02/06/2023] Open
Abstract
Human leukocyte antigen-G (HLA-G) is a non-classical HLA class I molecule that differs from classical HLA class I molecules by low polymorphism and tissue distribution. HLA-G is a tolerogenic molecule with an immune-modulatory and anti-inflammatory function on both innate and adaptative immunity. This peculiar characteristic of HLA-G has led to investigations of its role in pathological conditions in order to define possible uses in diagnosis, prevention and treatment. In recent years, HLA-G has been shown to have an important implication in different inflammatory and autoimmune diseases, pregnancy complications, tumor development and aggressiveness, and susceptibility to viral infections. In fact, HLA-G molecules have been reported to alternate at both genetic and protein level in different disease situations, supporting its crucial role in pathological conditions. Specific pathologies show altered levels of soluble (s)HLA-G and different HLA-G gene polymorphisms seem to correlate with disease. This review aims to update scientific knowledge on the contribution of HLA-G in managing pathological conditions.
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de Figueiredo Feitosa NL, Crispim JCDO, Zanetti BR, Magalhães PKR, Soares CP, Soares EG, Neder L, Donadi EA, Maciel LMZ. HLA-G is differentially expressed in thyroid tissues. Thyroid 2014; 24:585-92. [PMID: 24089994 DOI: 10.1089/thy.2013.0246] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND HLA-G is a nonclassical major histocompatibility complex molecule that has well-recognized immunomodulatory properties. The expression of HLA-G in tumor cells has been considered to be detrimental, permitting tumor spreading and decreased survival. We evaluated the expression of HLA-G in histologically normal thyroid tissue, goiter, and benign and malignant thyroid tumors, and studied the relationship between HLA-G expression and patient clinical variables. PATIENTS AND METHODS The immunohistochemistry expression of HLA-G was performed on 72 specimens of papillary thyroid carcinoma (PTC), 19 follicular thyroid carcinomas (FTC), 22 follicular adenomas (FA), 22 colloid goiters (CG), and 14 histologically normal thyroid glands (NT). The percentage of HLA-G staining was graded from absent (-) to intense (+++). RESULTS HLA-G was faintly expressed in areas of hyperplasia in NT and CG. In PTC, FTC, and FA, the percentage of cell staining was significantly higher than in NT and CG (p<0.001 for each comparison). The tumor area with HLA-G expression was greater in FTC (p=0.0059) and PTC (p=0.0330) compared to FA. According to the magnitude of HLA-G staining, PTC tumors >1 cm exhibited increased HLA-G staining when compared to smaller tumors (p=0.03). Aggressive histologic subtypes of PTC have a higher median stained tumor area. No association was found between HLA-G expression and tumoral staging or patient disease-free survival. CONCLUSIONS The gradual increase of HLA-G expression from hyperplasia to carcinomas, and the association of strong HLA staining with some variables implicated in poor prognosis corroborate the unfavorable role of HLA-G in tumor thyroid cells, inhibiting cytotoxic immune system cells and facilitating tumor evasion and progression.
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Meier D, Rumbo M, Gondolesi GE. Current Status of Allograft Tolerance in Intestinal Transplantation. Int Rev Immunol 2013; 33:245-60. [DOI: 10.3109/08830185.2013.829468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Kochan G, Escors D, Breckpot K, Guerrero-Setas D. Role of non-classical MHC class I molecules in cancer immunosuppression. Oncoimmunology 2013; 2:e26491. [PMID: 24482746 PMCID: PMC3894240 DOI: 10.4161/onci.26491] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 09/10/2013] [Accepted: 09/14/2013] [Indexed: 01/14/2023] Open
Abstract
Growing neoplasms employ various mechanisms to evade immunosurveillance. The expression of non-classical MHC class I molecules by both immune and malignant cells in the tumor microenvironment constitute of the strategies used by tumors to circumvent the cytotoxic activity of effector cells of the immune system. The overexpression of HLA-G, -E, and -F is a common finding across a variety of malignancies. However, while the presence of HLA-G and HLA-E has been recently correlated with poor clinical outcome, information on the clinicopathological significance of HLA-F is limited. In the present review, we summarize studies on non-classical MHC class I molecules with special emphasis on their role in the modulation of anticancer immune responses.
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Affiliation(s)
| | - David Escors
- Navarrabiomed-Fundacion Miguel Servet; Navarra, Spain ; Rayne Institute; University College London; London, UK
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Santos KE, Lima THA, Felicio LP, Massaro JD, Palomino GM, Silva ACA, Oliveira SF, Sabbagh A, Garcia A, Moreau P, Donadi EA, Mendes-Junior CT, Castelli EC. Insights on the HLA-G Evolutionary History Provided by a Nearby Alu Insertion. Mol Biol Evol 2013; 30:2423-34. [DOI: 10.1093/molbev/mst142] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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The plasma levels of soluble HLA-G molecules correlate directly with CD34+ cell concentration and HLA-G 14bp insertion/insertion polymorphism in cord blood donors. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2013; 12 Suppl 1:s361-6. [PMID: 23399358 DOI: 10.2450/2012.0144-12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 11/19/2012] [Indexed: 11/21/2022]
Abstract
BACKGROUND Cord blood provides haematopoietic stem cells for allogeneic transplantation and, thanks to the naivety of its immune system, has several advantages over other sources of stem cells. In the transplantation setting, the presence of immunosuppressive human leucocyte antigen (HLA)-G molecules has been advocated to prevent both rejection and Graft-versus-Host disease. HLA-G is physiologically expressed throughout pregnancy and is contained in cord blood at birth. Moreover, it has recently been reported that not only cord blood mesenchymal cells, but also CD34+ cell progenies produce soluble HLA-G (sHLA-G). We tried to identify the largest producer of sHLA-G among 85 healthy cord blood donors at Pavia Cord Blood Bank, correlating the sHLA-G concentration with the HLA-G 14bp insertion/deletion (INS/DEL) genotype and CD34+ cell concentration. MATERIALS AND METHODS We measured sHLA-G levels in 36 cord blood plasma stored at -20 °C for 2 months and 49 cord blood plasma stored at -196 °C for 4-6 years, by enzyme-linked immunosorbent assay. All cord blood donors were genotyped for the HLA-G 14bp INS/DEL polymorphism by polymerase chain reaction. For each cord blood unit, we measured the cell concentration by flow cytometry. RESULTS We did not find differences in sHLA-G levels between cord blood plasma aliquots stored for 4-6 years at -196 °C and cord blood plasma aliquots stored for 2 months at -20 °C. We observed a higher sHLA-G concentration in cord blood plasma donors who carried the HLA-G 14bp INS/INS genotype and had higher CD34+ cell concentrations (P=0.006). DISCUSSION This is the first report showing that the best cord blood stem cell donor is also the best sHLA-G producer, particularly if genetically characterized by the HLA-G 14bp INS/INS genotype. If the therapeutic role of sHLA-G molecules were to be finally established in the transplantation setting, our data suggest that cord blood plasma donors can provide a safe source of allogeneic sHLA-G immunosuppressive molecules ready for transfusion.
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Mociornita AG, Lim-Shon J, Joseph JM, Ross HJ, Rao V, Delgado DH. Can HLA-G polymorphisms predict the development of cardiac allograft vasculopathy? Hum Immunol 2012; 74:464-7. [PMID: 23261409 DOI: 10.1016/j.humimm.2012.12.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 12/05/2012] [Accepted: 12/07/2012] [Indexed: 01/05/2023]
Abstract
A 14 bp insertion/deletion polymorphism in exon 8 of the HLA-G gene is associated with mRNA stability and HLA-G expression. In cardiac transplantation, the 14 bp deletion polymorphism plays an important role in the expression of HLA-G and is associated with fewer episodes of cellular rejection. We investigated the association between the 14 bp insertion/deletion HLA-G polymorphism and cardiac allograft vasculopathy (CAV) post heart transplantation. There were no statistically significant differences in the presence of the three HLA-G genotypes (-14 bp/-14 bp, +14 bp/-14 bp, +14 bp/+14 bp) between patients without CAV and patients with CAV at 1 year (p=0.61) or 5 years (p=0.76) post-transplant. We found no correlation between HLA-G genotypes and CAV progression from baseline to 5 years post-transplant (p=0.55). HLA-G polymorphism appears to play an important role as a genetic indicator for cellular rejection post-transplant; however, it is not a reliable marker to identify patients at risk of CAV.
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Affiliation(s)
- Amelia G Mociornita
- Heart Transplant Program, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, 200 Elizabeth Street, Toronto, Ontario, Canada M5G 2C4
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Impact of HLA-G 14-bp polymorphism on acute rejection and cytomegalovirus infection in kidney transplant recipients from northwestern China. Transpl Immunol 2012; 27:69-74. [DOI: 10.1016/j.trim.2012.06.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 06/21/2012] [Accepted: 06/22/2012] [Indexed: 11/21/2022]
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de Oliveira Crispim JC, Silva TGA, Souto FJD, Souza FF, Bassi CL, Soares CP, Zucoloto S, Moreau P, Martinelli ADLC, Donadi EA. Upregulation of soluble and membrane-bound human leukocyte antigen G expression is primarily observed in the milder histopathological stages of chronic hepatitis C virus infection. Hum Immunol 2012; 73:258-62. [DOI: 10.1016/j.humimm.2011.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Revised: 11/07/2011] [Accepted: 12/01/2011] [Indexed: 12/01/2022]
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Cilião Alves DC, de Oliveira Crispim JC, Castelli EC, Mendes-Junior CT, Deghaide NHS, Barros Silva GE, Costa RS, Saber LT, Moreau P, Donadi EA. Human leukocyte antigen–G 3′ untranslated region polymorphisms are associated with better kidney allograft acceptance. Hum Immunol 2012; 73:52-9. [DOI: 10.1016/j.humimm.2011.10.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 10/04/2011] [Accepted: 10/07/2011] [Indexed: 11/29/2022]
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Boukouaci W, Busson M, Fortier C, Amokrane K, de Latour RP, Robin M, Krishnamoorthy R, Toubert A, Charron D, Socié G, Tamouza R. Association of HLA-G low expressor genotype with severe acute graft-versus-host disease after sibling bone marrow transplantation. Front Immunol 2011; 2:74. [PMID: 22566863 PMCID: PMC3342264 DOI: 10.3389/fimmu.2011.00074] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 11/25/2011] [Indexed: 11/13/2022] Open
Abstract
Background: Human leukocyte antigen-G (HLA-G) molecules play a prominent role in immune tolerance. Structurally similar to their classical HLA homologs, they are distinct by having high rate of polymorphism in the non-coding regions including a functionally relevant 14-base pair (bp) insertion/deletion (Ins/Del) allele in the 3′ untranslated region (3′UTR), rarely examined in a hematopoietic stem cell transplantation (HSCT) setting. Here, we analyzed the potential impact of HLA-G Ins/Del dimorphism on the incidence of acute graft-versus-host disease (aGvHD), transplant-related mortality (TRM), overall survival (OS), and incidence of relapse after HSCT using bone marrow (BM) as stem cell source from HLA-matched donors. Methods: One hundred fifty-seven sibling pairs, who had undergone HSCT, were studied for the distribution of the HLA-G 14 bp Ins/Del polymorphism using a polymerase chain reaction (PCR)-based technique. Potential genetic association with the incidence of aGvHD, TRM, and OS was analyzed by monovariate and multivariate analyses. Results: Monovariate analysis showed that the homozygous state for the 14-bp Ins allele is a risk factor for severe aGvHD (grade III and IV; P = 0.008), confirmed subsequently by multivariate analysis [hazard ratio (HR) = 3.5; 95% confidence interval (95%CI) = 1.3–9.5; P = 0.012]. We did not find any association between HLA-G polymorphism and the other studied complications. Conclusion: Our data suggest that the HLA-G low expressor 14 bp Ins allele constitutes a risk factor for the incidence of severe aGvHD in patients who received BM as stem cell source.
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Affiliation(s)
- Wahid Boukouaci
- Laboratoire d'Immunologie et d'Histocompatibilité and INSERM, UMRS 940, Hôpital Saint-Louis Paris, France
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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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Lu N, Zhang Y, Zou X, Yang X, Tian J, Zhen J, Zhou Y, Zhao S, Shi W. HLA-G on peripheral blood CD4(+) T lymphocytes: a potential predictor for acute renal rejection. Transpl Int 2011; 24:1103-11. [PMID: 21848900 DOI: 10.1111/j.1432-2277.2011.01314.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
HLA-G Expression in grafts and serum has been shown to improve graft acceptance. However, its expression on peripheral blood lymphocytes (PBLs) during acute rejection (AR) remains unknown. In this study, we serially monitored HLA-G expression on CD4(+) and CD8(+) PBLs of 66 recipients undergoing renal transplantation using flow cytometry at different time points before and after transplantation, as well as during AR episode. In stable recipients, HLA-G expression on CD4(+) PBLs declined during the first week after transplantation and increased continuously with immunosuppressive therapy. Then, expression declined gradually after 1 month and remained at a higher level compared with pretransplantation. When AR occurred, HLA-G expression decreased significantly compared with the stable level. In three recipients suffering from recurrent rejection, it remained at a low level despite impact immunosuppressive treatment. With mix lymphocyte assay, HLA-G(+) CD4(+) T cells showed inhibitory role on proliferation of peripheral blood mononuclear cell. HLA-G expression on CD8(+) PBLs was almost undetectable at different time points in the recipients and healthy controls. Our results suggest that HLA-G on CD4(+) PBLs might provide a potential marker for the early diagnosis of renal AR and for the immunosuppressive status of recipients.
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Affiliation(s)
- Nan Lu
- Institute of Diagnostics, School of Medicine, Shandong University, Jinan, PR China.
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Chiusolo P, Bellesi S, Piccirillo N, Giammarco S, Marietti S, De Ritis D, Metafuni E, Stignani M, Baricordi OR, Sica S, Leone G, Rizzo R. The role of HLA--G 14-bp polymorphism in allo-HSCT after short-term course MTX for GvHD prophylaxis. Bone Marrow Transplant 2011; 47:120-4. [PMID: 21399669 DOI: 10.1038/bmt.2011.40] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
HLA-G molecules are HLA class Ib antigens characterized by tolerogenic and immunoinhibitory functions. The HLA-G 14-bp insertion/deletion (ins/del) polymorphism controls protein expression and seems to be implicated in both MTX treatment response and SCT outcome. The aim of our study is to evaluate the role of HLA-G 14 bp polymorphism in subjects affected by hematological malignancies undergoing allo-SCT and receiving MTX therapy for GvHD prophylaxis. We performed a retrospective analysis of HLA-G 14 bp polymorphism using a specific PCR in 47 recipients and in their respective donors, and evaluated the correlation with the incidence of aGvHD, OS and disease-free survival (DFS) after allo-SCT. We did not observe any correlation between this polymorphism and the risk of aGvHD occurrence. On the contrary, we found that the recipients with a 14 bp ins/14 bp ins genotype were characterized by a lower OS and DFS in univariate and multivariate analysis (OS=OR: 3.235; DFS=OR: 3.302). These data indicate a role for recipient HLA-G 14 bp polymorphism in allo-SCT immunotolerance status and follow-up.
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Affiliation(s)
- P Chiusolo
- Hematology Department, Istituto di Ematologia, Università Cattolica del Sacro Cuore, Rome, Italy.
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Gonzalez A, Alegre E, Torres MI, Díaz-Lagares A, Lorite P, Palomeque T, Arroyo A. Evaluation of HLA-G5 plasmatic levels during pregnancy and relationship with the 14-bp polymorphism. Am J Reprod Immunol 2011; 64:367-74. [PMID: 20482523 DOI: 10.1111/j.1600-0897.2010.00855.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
PROBLEM Plasmatic HLA-G levels increase during pregnancy, but the contribution of each different isoform has not been elucidated yet. METHOD OF STUDY HLA-G5 was analyzed by ELISA in 19 controls, 79 women in the first 8 weeks of pregnancy and in nine women monthly until delivery. Genotyping for the 14-bp polymorphism was performed by PCR amplification of exon 8. RESULTS HLA-G5 was detected in plasma from 80% of pregnant women. The levels did not change during pregnancy, and there were no differences compared to control non-pregnant women. There was a high interindividual variation that was maintained throughout the pregnancy. The presence of +14-bp allele was associated with HLA-G5 positivity. Pregnant women who were heterozygotic to 14-bp polymorphism had significantly higher levels of HLA-G5 compared to -14 bp/-14-bp homozygotic. CONCLUSION Plasmatic HLA-G5 levels do not change during pregnancy and its concentration depends on 14-bp polymorphism.
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Affiliation(s)
- Alvaro Gonzalez
- Department of Biochemistry, University Clinic of Navarra, Pamplona, Spain.
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Souto FJD, Crispim JCO, Ferreira SC, da Silva ASM, Bassi CL, Soares CP, Zucoloto S, Rouas-Freiss N, Moreau P, Martinelli ALC, Donadi EA. Liver HLA-G expression is associated with multiple clinical and histopathological forms of chronic hepatitis B virus infection. J Viral Hepat 2011; 18:102-5. [PMID: 20236238 DOI: 10.1111/j.1365-2893.2010.01286.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
As the mechanisms leading to the persistence of hepatitis B virus (HBV) infection are poorly understood and as the histocompatibility leucocyte antigen (HLA)-G is well described as a tolerogenic molecule, we evaluated HLA-G expression in 74 specimens of HBV liver biopsies and in 10 specimens obtained from previously healthy cadaver liver donors. HBV specimens were reviewed and classified by the METAVIR score, and HLA-G expression was assessed by immunohistochemistry. No HLA-G expression was observed in control hepatocytes. In contrast, 57 (77%) of 74 HBV specimens showed soluble and membrane-bound HLA-G expression in hepatocytes, biliary epithelial cells or both. No associations between the intensity of HLA-G expression and patient age or gender, HBeAg status, severity of liver fibrosis, and grade of histological findings were observed. Although significance was not reached (P = 0.180), patients exhibiting HLA-G expression presented a higher median HBV DNA viral load (10⁵ copies/mL) than those who did not express HLA-G (10(3.7) copies/mL). These results indicate that HLA-G is expressed in most cases of chronic HBV infection in all stages and may play a role in the persistency of HBV infection.
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Affiliation(s)
- F J D Souto
- School of Medical Sciences, Federal University of Mato Grosso, Cuiabá, Brazil.
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Donadi EA, Castelli EC, Arnaiz-Villena A, Roger M, Rey D, Moreau P. Implications of the polymorphism of HLA-G on its function, regulation, evolution and disease association. Cell Mol Life Sci 2010; 68:369-95. [PMID: 21107637 PMCID: PMC3021195 DOI: 10.1007/s00018-010-0580-7] [Citation(s) in RCA: 245] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 10/22/2010] [Indexed: 12/27/2022]
Abstract
The HLA-G gene displays several peculiarities that are distinct from those of classical HLA class I genes. The unique structure of the HLA-G molecule permits a restricted peptide presentation and allows the modulation of the cells of the immune system. Although polymorphic sites may potentially influence all biological functions of HLA-G, those present at the promoter and 3′ untranslated regions have been particularly studied in experimental and pathological conditions. The relatively low polymorphism observed in the MHC-G coding region both in humans and apes may represent a strong selective pressure for invariance, whereas, in regulatory regions several lines of evidence support the role of balancing selection. Since HLA-G has immunomodulatory properties, the understanding of gene regulation and the role of polymorphic sites on gene function may permit an individualized approach for the future use of HLA-G for therapeutic purposes.
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Affiliation(s)
- Eduardo A Donadi
- Division of Clinical Immunology, Department of Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirão Preto, SP, Brazil.
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44
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Frequency of HLA-G exon 8 polymorphisms and kidney allograft outcome in Iranian population. Mol Biol Rep 2010; 38:3593-7. [DOI: 10.1007/s11033-010-0470-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Accepted: 11/09/2010] [Indexed: 10/18/2022]
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Expression of soluble HLA-G identifies favorable outcomes in liver transplant recipients. Transplantation 2010; 90:1000-5. [PMID: 20814356 DOI: 10.1097/tp.0b013e3181f546af] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Human leukocyte antigen (HLA)-G displays immunotolerogenic properties toward the main effector cells involved in graft rejection through inhibition of natural killer cell- and cytotoxic T-lymphocyte-mediated cytolysis, and CD4 T-cell alloproliferation. An increase in serum and graft levels of HLA-G has been noted in transplant patients with improved allograft survival. However, the clinical relevance of soluble serum HLA-G molecules in tolerant pediatric and young adult liver transplant patients remains to be studied. METHODS We examined the serum HLA-G levels in 42 pediatric and young adult liver transplant patients with a mean age of 15 years; 13 patients had operational tolerance (TOL), with complete immunosuppression withdrawal for 2.3 to 13.2 years. RESULTS Median HLA-G level in patients with acute rejection (AR) was similar to the level in pediatric healthy volunteers (9.9 vs. 4.2 U/mL, P=0.13). HLA-G was higher in patients with stable liver function on immunosuppression (54.6 U/mL) than in patients with AR (P=0.01) and healthy volunteers (P=0.003), but almost 6-fold lower than in TOL patients (325.4 U/mL). HLA-G did not correlate with clinical confounders or a history of posttransplant lymphoproliferative disease or Epstein-Barr virus; although levels in the TOL group were negatively correlated with time after immunosuppression withdrawal (r=-0.75, P=0.003). In rejectors, HLA-G levels trended to negatively correlate with a higher number (r=-0.58) and greater severity of AR episodes (r=-0.56) after 1 year posttransplantation. CONCLUSIONS Increased serum HLA-G levels track with operational tolerance of liver grafts and support favorable outcomes in pediatric and young adult recipients.
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Lu N, Wang C, Yang X, Zhao S, Li X, Li X, Jiang H, Feng J, Zhang Y, Zou X. Dynamic expression of Qa-2 during acute graft rejection. Mol Med 2010; 17:248-55. [PMID: 21079885 DOI: 10.2119/molmed.2010.00133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Accepted: 11/09/2010] [Indexed: 11/06/2022] Open
Abstract
Human leukocyte antigen (HLA)-G exhibits immunotolerogenicity and is related to allograft acceptance. Qa-2 is the murine homolog of HLA-G; it has structure and functions similar to those of HLA-G. We investigated the dynamic expression of Qa-2 in skin allografts by immunohistochemistry and on peripheral blood lymphocyte subsets by flow cytometry during the entire process of acute graft rejection (AGR) with a murine skin transplantation model to determine its relationship with the pathological changes of allografts and the influence of immunosuppressive therapy. In grafts without immunosuppressive treatment, Qa-2 did not exhibit obvious changes in syngeneic and allogeneic recipients. In contrast, with immunosuppressant-treated grafts, positive expression of Qa-2 was observed. It remained at high levels in the immunosuppressant-treated syngeneic group; however, it became weakly positive and even negative in infiltrating inflammatory cells as AGR advanced, but it remained strongly positive in other skin tissues throughout the AGR process. Qa-2 expression on CD4(+) and CD8(+) peripheral blood lymphocyte subsets remained stable at a normal level in the non-immunosuppressant-treated syngeneic group. Immunosuppressive treatment can also significantly upregulate Qa-2. In the allogeneic groups, decreased expression was observed when AGR was at histological grades 1 to 2 (well before gross rejection was observed). Qa-2 was upregulated again after the graft was rejected completely. The results suggest that the increase in Qa-2 may be attributed to the use of immunosuppressive treatments. Moreover, Qa-2 expression decreased significantly with AGR progression, suggesting that it may be a potential marker for predicting AGR, especially in the presence of immunosuppressive agents.
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Affiliation(s)
- Nan Lu
- Institute of Diagnostics, School of Medicine, Shandong University, Jinan, P R China
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Kronsteiner B, Peterbauer-Scherb A, Grillari-Voglauer R, Redl H, Gabriel C, van Griensven M, Wolbank S. Human mesenchymal stem cells and renal tubular epithelial cells differentially influence monocyte-derived dendritic cell differentiation and maturation. Cell Immunol 2010; 267:30-8. [PMID: 21145536 DOI: 10.1016/j.cellimm.2010.11.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 09/24/2010] [Accepted: 11/06/2010] [Indexed: 12/29/2022]
Abstract
Mesenchymal stem cells (MSCs) possess immunosuppressive properties. But also fully differentiated human renal tubular epithelial cells (RTECs) are able to modulate T-cell proliferation in vitro. In this study we compared two MSC populations, human adipose derived stem cells (ASCs) and human amniotic mesenchymal stromal cells (hAMSCs), and RTECs regarding their potential to inhibit monocyte-derived dendritic cell (DC) differentiation and maturation in indirect co-culture. In the presence of hAMSCs and RTECs, monocytes stimulated to undergo DC differentiation were inhibited to acquire surface phenotype of immature and mature DCs. In contrast, ASCs showed only limited suppressive capacity. Secretion of IL-12p70 was suppressed in hAMSC co-cultures and high IL-10 levels were detected in all co-cultures. Prostaglandin E(2) was found in ASC and hAMSC co-cultures, whereas soluble human leukocyte antigen-G was highly elevated only in RTEC co-cultures. Thus, inhibition of DC generation by MSCs and RTECs might be mediated by different soluble factors.
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Affiliation(s)
- Barbara Kronsteiner
- Red Cross Blood Transfusion Service of Upper Austria, Krankenhausstrasse 7, A-4017 Linz, Austria.
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Cardili RN, Alves TG, Freitas JCOC, Soares CP, Mendes-Junior CT, Soares EG, Donadi EA, Silva-Souza C. Expression of human leucocyte antigen-G primarily targets affected skin of patients with psoriasis. Br J Dermatol 2010; 163:769-75. [PMID: 20560954 DOI: 10.1111/j.1365-2133.2010.09917.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The nonclassical human leucocyte antigen (HLA)-G molecule has been well recognized as a tolerogenic molecule and few studies have evaluated the role of the molecule in inflammatory cutaneous autoimmune diseases. OBJECTIVES To evaluate the expression of HLA-G in skin specimens of patients with psoriasis and to analyse its correlation with epidemiological and clinical variables. METHODS Thirty untreated patients with psoriasis and 32 healthy individuals were enrolled. Immunohistochemistry was applied to identify HLA-G expression in formalin-fixed paraffin-embedded cutaneous skin biopsies. RESULTS Soluble and membrane-bound HLA-G expression was detected in 30 (90%) of the skin specimens from patients presenting clinical and histopathological features of psoriasis. Although infiltrating lymphomononuclear cells of the dermis exhibited HLA-G expression, the epidermis was primarily targeted. HLA-G expression was also observed in 27% (three of 11) of the specimens that exhibited no clinical and histopathological features of psoriasis (nonaffected areas). In contrast, skin specimens obtained from healthy individuals exhibited no HLA-G expression (P < 0·0001). The intensity of HLA-G expression was not associated with type I/II psoriasis, Psoriasis Area and Severity Index score or clinical forms. CONCLUSIONS As the HLA-G molecule was consistently expressed in affected and, to a lesser extent, in nonaffected areas of untreated patients with psoriasis, irrespective of the severity of the clinical variants, one may hypothesize that the presence of HLA-G may be responsible, at least in part, for the regulation of autoimmune effector cells.
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Affiliation(s)
- R N Cardili
- Department of Internal Medicine, Division of Dermatology, School of Medicine of Ribeirão Preto, University of São Paulo, USP, Ribeirão Preto, São Paulo, Brazil
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Jung HH, Hahn WH, Cho BS, Kim SD. Association of HLA-G gene promoter haplotype with childhood IgA nephropathy in the Korean population. KOREAN JOURNAL OF PEDIATRICS 2010. [DOI: 10.3345/kjp.2010.53.4.548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Hwan Hee Jung
- Department of Pediatrics, Kyunghee University College of Medicine, Seoul, Korea
| | - Won Ho Hahn
- Department of Pediatrics, Kyunghee University College of Medicine, Seoul, Korea
| | - Byoung Soo Cho
- Department of Pediatrics, Kyunghee University College of Medicine, Seoul, Korea
| | - Sung Do Kim
- Department of Pediatrics, Kyunghee University College of Medicine, Seoul, Korea
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Bahri R, Naji A, Menier C, Charpentier B, Carosella ED, Rouas-Freiss N, Durrbach A. Dendritic Cells Secrete the Immunosuppressive HLA-G Molecule upon CTLA4-Ig Treatment: Implication in Human Renal Transplant Acceptance. THE JOURNAL OF IMMUNOLOGY 2009; 183:7054-62. [DOI: 10.4049/jimmunol.0803054] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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