1
|
Strategies to Improve Immune Suppression Post-Liver Transplantation: A Review. TRANSPLANTOLOGY 2021. [DOI: 10.3390/transplantology2040042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Since the first liver transplantation operation (LT) in 1967 by Thomas Starzl, efforts to increase survival and prevent rejection have taken place. The development of calcineurin inhibitors (CNIs) in the 1980s led to a surge in survival post-transplantation, and since then, strategies to prevent graft loss and preserve long-term graft function have been prioritized. Allograft rejection is mediated by the host immune response to donor antigens. Prevention of rejection can be achieved through either immunosuppression or induction of tolerance. This leads to a clinical dilemma, as the choice of an immunosuppressive agent is not an easy task, with considerable patient and graft-related morbidities. On the other hand, the induction of graft tolerance remains a challenge. Despite the fact that the liver exhibits less rejection than any other transplanted organs, spontaneous graft tolerance is rare. Most immunosuppressive medications have been incriminated in renal, cardiovascular, and neurological complications, relapse of viral hepatitis, and recurrence of HCC and other cancers. Efforts to minimize immunosuppression are directed toward decreasing medication side effects, increasing cost effectiveness, and decreasing economic burden without increasing the risk of rejection. In this article, we will discuss recent advances in strategies for improving immunosuppression following liver transplantation.
Collapse
|
2
|
Duygu B, Olieslagers TI, Groeneweg M, Voorter CEM, Wieten L. HLA Class I Molecules as Immune Checkpoints for NK Cell Alloreactivity and Anti-Viral Immunity in Kidney Transplantation. Front Immunol 2021; 12:680480. [PMID: 34295330 PMCID: PMC8290519 DOI: 10.3389/fimmu.2021.680480] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 06/14/2021] [Indexed: 12/12/2022] Open
Abstract
Natural killer (NK) cells are innate lymphocytes that can kill diseased- or virally-infected cells, mediate antibody dependent cytotoxicity and produce type I immune-associated cytokines upon activation. NK cells also contribute to the allo-immune response upon kidney transplantation either by promoting allograft rejection through lysis of cells of the transplanted organ or by promoting alloreactive T cells. In addition, they protect against viral infections upon transplantation which may be especially relevant in patients receiving high dose immune suppression. NK cell activation is tightly regulated through the integrated balance of signaling via inhibitory- and activating receptors. HLA class I molecules are critical regulators of NK cell activation through the interaction with inhibitory- as well as activating NK cell receptors, hence, HLA molecules act as critical immune checkpoints for NK cells. In the current review, we evaluate how NK cell alloreactivity and anti-viral immunity are regulated by NK cell receptors belonging to the KIR family and interacting with classical HLA class I molecules, or by NKG2A/C and LILRB1/KIR2DL4 engaging non-classical HLA-E or -G. In addition, we provide an overview of the methods to determine genetic variation in these receptors and their HLA ligands.
Collapse
Affiliation(s)
- Burcu Duygu
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, Netherlands.,GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| | - Timo I Olieslagers
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, Netherlands.,GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| | - Mathijs Groeneweg
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, Netherlands.,GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| | - Christina E M Voorter
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, Netherlands.,GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| | - Lotte Wieten
- Department of Transplantation Immunology, Maastricht University Medical Center, Maastricht, Netherlands.,GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, Netherlands
| |
Collapse
|
3
|
Ferluga J, Singh I, Rout S, Al-Qahtani A, Yasmin H, Kishore U. Immune Responses in Malaria and Vaccine Strategies. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1313:273-291. [PMID: 34661899 DOI: 10.1007/978-3-030-67452-6_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Malaria is a pandemic with nearly half of global population at risk, caused by parasite Plasmodium species, particularly P. falciparum with a high morbidity and mortality, especially among children. There is an urgent need for development of population protective vaccines, such as in sub-Saharan low-income countries, where P. falciparum malaria is endemic. After years of endeavour with children and adults for safety and efficacy clinical trials, the P. falciparum circumsporozoite protein antigen, is targeted by specific antibodies induced by recombinant vaccine, called TRS,S. TRS,S has been authorized by WHO and Malawi Government to be the first malaria vaccine for up to 2 years of aged children for protection against malaria. Other malaria vaccines in clinical trials are also very promising candidates, including the original live, X-ray attenuated P-sporozoite vaccine, inducing antigen-specific T cell immunity at liver stage. Malaria parasite at blood symptomatic stage is targeted by specific antibodies to parasite-infected erythrocytes, which are important against pathogenic placenta-infected erythrocyte sequestration. Here, the demographic distribution of Plasmodium species and their pathogenicity in infected people are discussed. The role of innate phagocytic cells and malaria antigen specific T cell immunity, as well as that of specific antibody production by B cells are highlighted. The paramount role of cytotoxic CD8+ T cellular immunity in malaria people protection is also included.
Collapse
Affiliation(s)
- Janez Ferluga
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
| | - Iesha Singh
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Sashmita Rout
- Department of Physiology, All-India Institute of Medical Sciences, Bhubaneswar, India
| | - Ahmed Al-Qahtani
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Hadida Yasmin
- Immunology and Cell Biology Laboratory, Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal, India
| | - Uday Kishore
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
| |
Collapse
|
4
|
Habibi S, Ghaffarpasand E, Shojaei F, Alihashemi M, Kahe F, Zahedi Tajrishi F, Chi G. Prognostic Value of Biomarkers in Cardiac Allograft Vasculopathy following Heart Transplantation: A Literature Review. Cardiology 2020; 145:693-702. [PMID: 32892195 DOI: 10.1159/000509630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 06/23/2020] [Indexed: 11/19/2022]
Abstract
Cardiac allograft vasculopathy (CAV), also known as cardiac transplant vasculopathy, is a major determinant of long-term survival among cardiac transplantation recipients. Histologically, CAV is featured by diffuse, concentric thickening of the vascular wall, and primarily affects large and small epicardial coronary arteries, intramyocardial arteries, and veins. Owing to graft denervation, CAV typically follows an insidious course, and patients may not experience classic angina symptoms but instead present with progressive heart failure or ventricular arrhythmias. Recent studies on biomarkers have furthered the knowledge concerning the prediction and prognosis of CAV. Given its association with metabolic, thrombotic, inflammatory, and immunologic markers, CAV is likely to represent a complex multifactorial process that involves both immune-mediated and non-immune-mediated pathways. In order to identify the high-risk patients that would benefit from early intervention, future research is warranted to examine the usefulness of a biomarker panel in CAV risk stratification.
Collapse
Affiliation(s)
- Shaghayegh Habibi
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Eiman Ghaffarpasand
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Fahimehalsadat Shojaei
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Mahda Alihashemi
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Farima Kahe
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Gerald Chi
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA,
| |
Collapse
|
5
|
Proust R, Ponsen AC, Rouffiac V, Schenowitz C, Montespan F, Ser-Le Roux K, De Leeuw F, Laplace-Builhé C, Mauduit P, Carosella ED, Banzet S, Lataillade JJ, Rouas-Freiss N, Uzan G, Peltzer J. Cord blood-endothelial colony forming cells are immunotolerated and participate at post-ischemic angiogenesis in an original dorsal chamber immunocompetent mouse model. Stem Cell Res Ther 2020; 11:172. [PMID: 32381102 PMCID: PMC7206734 DOI: 10.1186/s13287-020-01687-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/30/2020] [Accepted: 04/22/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Cardiovascular diseases are the main cause of morbidity and mortality worldwide. Restoring blood supply to ischemic tissues is an essential goal for the successful treatment of these diseases. Growth factor or gene therapy efficacy remains controversial, but stem cell transplantation is emerging as an interesting approach to stimulate angiogenesis. Among the different stem cell populations, cord blood-endothelial progenitor cells (CB-EPCs) and more particularly cord blood-endothelial progenitor cell-derived endothelial colony forming cells (CB-ECFCs) have a great proliferative potential without exhibiting signs of senescence. Even if it was already described that CB-ECFCs were able to restore blood perfusion in hind-limb ischemia in an immunodeficient mouse model, until now, the immunogenic potential of allogenic CB-ECFCs remains controversial. Therefore, our objectives were to evaluate the immune tolerance potency of CB-ECFCs and their capacity to restore a functional vascular network under ischemic condition in immunocompetent mice. METHODS In vitro, the expression and secretion of immunoregulatory markers (HLA-G, IL-10, and TGF-β1) were evaluated on CB-ECFCs. Moreover, CB-ECFCs were co-cultured with activated peripheral blood mononuclear cells (PBMCs) for 6 days. PBMC proliferation was evaluated by [3H]-thymidine incorporation on the last 18 h. In vivo, CB-ECFCs were administered in the spleen and muscle of immunocompetent mice. Tissues were collected at day 14 after surgery. Finally, CB-ECFCs were injected intradermally in C57BL/6JRj mice close to ischemic macrovessel induced by thermal cauterization. Mice recovered until day 5 and were imaged, twice a week until day 30. RESULTS Firstly, we demonstrated that CB-ECFCs expressed HLA-G, IL-10, and TGF-β1 and secreted IL-10 and TGF-β1 and that they could display immunosuppressive properties in vitro. Secondly, we showed that CB-ECFCs could be tolerated until 14 days in immunocompetent mice. Thirdly, we revealed in an original ischemic model of dorsal chamber that CB-ECFCs were integrated in a new functional vascular network. CONCLUSION These results open up new perspectives about using CB-ECFCs as an allogeneic cell therapy product and gives new impulse to the treatment of cardiovascular diseases.
Collapse
Affiliation(s)
- Richard Proust
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Anne-Charlotte Ponsen
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Valérie Rouffiac
- Paris-Saclay University, Paris-Sud University, Gustave Roussy Institute, INSERM, CNRS, Molecular Analysis, Modeling and Imaging of Cancer Disease, Villejuif, France
| | - Chantal Schenowitz
- CEA, DRF-IBFJ, Hemato-Immunology Research Unit, INSERM UMR-S 976, IRSL - Paris University, Saint-Louis Hospital, Paris, France
| | - Florent Montespan
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Karine Ser-Le Roux
- Paris-Saclay University, Paris-Sud University, Gustave Roussy Institute, INSERM, CNRS, Molecular Analysis, Modeling and Imaging of Cancer Disease, Villejuif, France
| | - Frédéric De Leeuw
- Paris-Saclay University, Paris-Sud University, Gustave Roussy Institute, INSERM, CNRS, Molecular Analysis, Modeling and Imaging of Cancer Disease, Villejuif, France
| | - Corinne Laplace-Builhé
- Paris-Saclay University, Paris-Sud University, Gustave Roussy Institute, INSERM, CNRS, Molecular Analysis, Modeling and Imaging of Cancer Disease, Villejuif, France
| | - Philippe Mauduit
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Edgardo D Carosella
- CEA, DRF-IBFJ, Hemato-Immunology Research Unit, INSERM UMR-S 976, IRSL - Paris University, Saint-Louis Hospital, Paris, France
| | - Sébastien Banzet
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Jean-Jacques Lataillade
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Nathalie Rouas-Freiss
- CEA, DRF-IBFJ, Hemato-Immunology Research Unit, INSERM UMR-S 976, IRSL - Paris University, Saint-Louis Hospital, Paris, France
| | - Georges Uzan
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France
| | - Juliette Peltzer
- INSERM UMR-S-MD 1197/Ministry of the Armed Forces, Biomedical Research Institut of the Armed Forces (IRBA), Paul-Brousse Hospital Villejuif and CTSA Clamart, Clamart, France.
| |
Collapse
|
6
|
Rahim MN, Long L, Penna L, Williamson C, Kametas NA, Nicolaides KH, Heneghan MA. Pregnancy in Liver Transplantation. Liver Transpl 2020; 26:564-581. [PMID: 31950556 DOI: 10.1002/lt.25717] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 12/26/2019] [Indexed: 02/06/2023]
Abstract
Pregnancy after liver transplantation (LT) is increasingly common and is a frequent scenario that transplant physicians, obstetricians, and midwives encounter. This review summarizes the key issues surrounding preconception, pregnancy-related outcomes, immunosuppression, and breastfeeding in female LT recipients. Prepregnancy counseling in these patients should include recommendations to delay conception for at least 1-2 years after LT and discussions about effective methods of contraception. Female LT recipients are generally recommended to continue immunosuppression during pregnancy to prevent allograft rejection; however, individual regimens may need to be altered. Although pregnancy outcomes are overall favorable, there is an increased risk of maternal and fetal complications. Pregnancy in this cohort remains high risk and should be managed vigilantly in a multidisciplinary setting. We aim to review the available evidence from national registries, population-based studies, and case series and to provide recommendations for attending clinicians.
Collapse
Affiliation(s)
- Mussarat N Rahim
- Institute of Liver Studies, King's College Hospital, London, United Kingdom
| | - Lisa Long
- Department of Obstetrics, King's College Hospital, London, United Kingdom
| | - Leonie Penna
- Department of Obstetrics, King's College Hospital, London, United Kingdom
| | | | - Nikos A Kametas
- Fetal Medicine Research Unit, King's College Hospital, London, United Kingdom
| | - Kypros H Nicolaides
- Fetal Medicine Research Unit, King's College Hospital, London, United Kingdom
| | - Michael A Heneghan
- Institute of Liver Studies, King's College Hospital, London, United Kingdom
| |
Collapse
|
7
|
Ajith A, Portik-Dobos V, Horuzsko DD, Kapoor R, Mulloy LL, Horuzsko A. HLA-G and humanized mouse models as a novel therapeutic approach in transplantation. Hum Immunol 2020; 81:178-185. [PMID: 32093884 DOI: 10.1016/j.humimm.2020.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 01/12/2023]
Abstract
HLA-G is a nonclassical MHC-Class I molecule whose expression, along the feto-maternal barrier contributes towards tolerance of the semiallogeneic fetus during pregnancy. In light of its inhibitory properties, recent research has established HLA-G involvement in mechanisms responsible for directing allogeneic immune responses towards tolerance during allogeneic situations such as organ transplantation. Here, we critically review the data supporting the tolerogenic role of HLA-G in organ transplantation, the various factors influencing its expression, and the introduction of novel humanized mouse models that are one of the best approaches to assess the utility of HLA-G as a therapeutic tool in organ transplantation.
Collapse
Affiliation(s)
- Ashwin Ajith
- Georgia Cancer Canter, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Vera Portik-Dobos
- Georgia Cancer Canter, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Daniel D Horuzsko
- Philadelphia College of Osteopathic Medicine South Georgia, Moultrie, GA, USA
| | - Rajan Kapoor
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Laura L Mulloy
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Anatolij Horuzsko
- Georgia Cancer Canter, Medical College of Georgia, Augusta University, Augusta, GA, USA.
| |
Collapse
|
8
|
Rezaei F, Zareei N, Razmi N, Nikeghbalian S, Azarpira N. Genetic Polymorphism of HLA-G 14-bp Insertion/Deletion in Pancreas Transplant Recipients and Its Association With Type 1 Diabetes Mellitus. EXP CLIN TRANSPLANT 2019; 19:154-159. [PMID: 30702046 DOI: 10.6002/ect.2018.0162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Human leukocyte antigen-G is an immuno-modulatory factor that affects acute allograft rejection and autoimmune diseases such as type 1 diabetes mellitus. In this study, possible associations between human leukocyte antigen-G 14-bp insertion/deletion polymorphism and acute pancreas rejection were investigated. MATERIALS AND METHODS Human leukocyte antigen-G genotyping was assessed in 102 Iranian pancreas transplant recipients (including 41 with acute rejection and 61 with nonacute rejection). Results were compared with 100 individuals in a normal control group. RESULTS No significant differences in genotype frequencies of human leukocyte antigen-G 14-bp insertion / deletion were observed in recipients who had acute rejection episodes. On the other hand, the insertion / insertion genotype was a risk factor for susceptibility to type 1 diabetes mellitus (odds ratio = 3.82, 95% confidence interval, 1.37- 11.22; P = .005). CONCLUSIONS Our results provided evidence revealing that the human leukocyte antigen-G insertion / insertion genotype might be involved in the pathogenesis of type 1 diabetes mellitus.
Collapse
Affiliation(s)
- Firoozeh Rezaei
- From the Shiraz Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; and the Department of Biochemistry, Faculty of Basic Sciences, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | | | | | | | | |
Collapse
|
9
|
Ajith A, Portik-Dobos V, Nguyen-Lefebvre AT, Callaway C, Horuzsko DD, Kapoor R, Zayas C, Maenaka K, Mulloy LL, Horuzsko A. HLA-G dimer targets Granzyme B pathway to prolong human renal allograft survival. FASEB J 2019; 33:5220-5236. [PMID: 30620626 DOI: 10.1096/fj.201802017r] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Human leukocyte antigen G (HLA-G), a nonclassic HLA class Ib molecule involved in the maintenance of maternal tolerance to semiallogeneic fetal tissues during pregnancy, has emerged as a potential therapeutic target to control allograft rejection. We demonstrate here that the level of soluble HLA-G dimer was higher in a group of 90 patients with a functioning renal allograft compared with 40 patients who rejected (RJ) their transplants. The HLA-G dimer level was not affected by demographic status. One of the potential mechanisms in tissue-organ allograft rejection involves the induction of granzymes and perforin, which are the main effector molecules expressed by CD8+ cytotoxic T lymphocytes and function to destroy allogeneic transplants. Using genomics and molecular and cellular analyses of cells from T-cell-mediated RJ and nonrejected kidney transplant patients, cells from leukocyte Ig-like receptor B1 (LILRB1) transgenic mice, humanized mice, and genetically engineered HLA-G dimer, we demonstrated a novel mechanism by which HLA-G dimer inhibits activation and cytotoxic capabilities of human CD8+ T cells. This mechanism implicated the down-regulation of Granzyme B expression and the essential involvement of LILRB1. Thus, HLA-G dimer has the potential to be a specific and effective therapy for prevention of allograft rejection and prolongation of graft survival.-Ajith, A., Portik-Dobos, V., Nguyen-Lefebvre, A. T., Callaway, C., Horuzsko, D. D., Kapoor, R., Zayas, C., Maenaka, K., Mulloy, L. L., Horuzsko, A. HLA-G dimer targets Granzyme B pathway to prolong human renal allograft survival.
Collapse
Affiliation(s)
- Ashwin Ajith
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Vera Portik-Dobos
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Anh Thu Nguyen-Lefebvre
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Christine Callaway
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Daniel D Horuzsko
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Rajan Kapoor
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Carlos Zayas
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Katsumi Maenaka
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Laura L Mulloy
- Division of Nephrology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Anatolij Horuzsko
- Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
Crux NB, Elahi S. Human Leukocyte Antigen (HLA) and Immune Regulation: How Do Classical and Non-Classical HLA Alleles Modulate Immune Response to Human Immunodeficiency Virus and Hepatitis C Virus Infections? Front Immunol 2017; 8:832. [PMID: 28769934 PMCID: PMC5513977 DOI: 10.3389/fimmu.2017.00832] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 06/30/2017] [Indexed: 12/13/2022] Open
Abstract
The genetic factors associated with susceptibility or resistance to viral infections are likely to involve a sophisticated array of immune response. These genetic elements may modulate other biological factors that account for significant influence on the gene expression and/or protein function in the host. Among them, the role of the major histocompatibility complex in viral pathogenesis in particular human immunodeficiency virus (HIV) and hepatitis C virus (HCV), is very well documented. We, recently, added a novel insight into the field by identifying the molecular mechanism associated with the protective role of human leukocyte antigen (HLA)-B27/B57 CD8+ T cells in the context of HIV-1 infection and why these alleles act as a double-edged sword protecting against viral infections but predisposing the host to autoimmune diseases. The focus of this review will be reexamining the role of classical and non-classical HLA alleles, including class Ia (HLA-A, -B, -C), class Ib (HLA-E, -F, -G, -H), and class II (HLA-DR, -DQ, -DM, and -DP) in immune regulation and viral pathogenesis (e.g., HIV and HCV). To our knowledge, this is the very first review of its kind to comprehensively analyze the role of these molecules in immune regulation associated with chronic viral infections.
Collapse
Affiliation(s)
- Nicole B Crux
- Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| | - Shokrollah Elahi
- Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
12
|
White SR, Nicodemus-Johnson J, Laxman B, Denner DR, Naureckas ET, Hogarth DK, Stern R, Minc A, Solway J, Sperling A, Ober C. Elevated levels of soluble humanleukocyte antigen-G in the airways are a marker for a low-inflammatory endotype of asthma. J Allergy Clin Immunol 2017; 140:857-860. [PMID: 28363527 DOI: 10.1016/j.jaci.2017.02.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 02/03/2017] [Accepted: 02/22/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Steven R White
- Department of Medicine, University of Chicago, Chicago, Ill.
| | | | | | - Darcy R Denner
- Department of Medicine, University of Chicago, Chicago, Ill
| | | | - D Kyle Hogarth
- Department of Medicine, University of Chicago, Chicago, Ill
| | - Randi Stern
- Department of Medicine, University of Chicago, Chicago, Ill
| | - Alexa Minc
- Department of Medicine, University of Chicago, Chicago, Ill
| | - Julian Solway
- Department of Medicine, University of Chicago, Chicago, Ill
| | - Anne Sperling
- Department of Medicine, University of Chicago, Chicago, Ill
| | - Carole Ober
- Department of Human Genetics, University of Chicago, Chicago, Ill
| |
Collapse
|
13
|
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.
Collapse
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
| |
Collapse
|
14
|
Immunoregulatory Role of HLA-G in Allergic Diseases. J Immunol Res 2016; 2016:6865758. [PMID: 27413762 PMCID: PMC4931064 DOI: 10.1155/2016/6865758] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 05/25/2016] [Indexed: 01/17/2023] Open
Abstract
Allergic diseases are sustained by a T-helper 2 polarization leading to interleukin-4 secretion, IgE-dependent inflammation, and mast cell and eosinophil activation. HLA-G molecules, both in membrane-bound and in soluble forms, play a central role in modulation of immune responses. Elevated levels of soluble HLA-G (sHLA-G) molecules are detected in serum of patients with allergic rhinitis to seasonal and perennial allergens and correlate with allergen-specific IgE levels, clinical severity, drug consumption, and response to allergen-specific immunotherapy. sHLA-G molecules are also found in airway epithelium of patients with allergic asthma and high levels of sHLA-G molecules are detectable in plasma and bronchoalveolar lavage of asthmatic patients correlating with allergen-specific IgE levels. Finally, HLA-G molecules are expressed by T cells, monocytes-macrophages, and Langerhans cells infiltrating the dermis of atopic dermatitis patients. Collectively, although at present it is difficult to completely define the role of HLA-G molecules in allergic diseases, it may be suggested that they are expressed and secreted by immune cells during the allergic reaction in an attempt to suppress allergic inflammation.
Collapse
|
15
|
|
16
|
Vandermeulen M, Grégoire C, Briquet A, Lechanteur C, Beguin Y, Detry O. Rationale for the potential use of mesenchymal stromal cells in liver transplantation. World J Gastroenterol 2014; 20:16418-16432. [PMID: 25469010 PMCID: PMC4248185 DOI: 10.3748/wjg.v20.i44.16418] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 08/28/2014] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stromal cells (MSCs) are multipotent and self-renewing cells that reside essentially in the bone marrow as a non-hematopoietic cell population, but may also be isolated from the connective tissues of most organs. MSCs represent a heterogeneous population of adult, fibroblast-like cells characterized by their ability to differentiate into tissues of mesodermal lineages including adipocytes, chondrocytes and osteocytes. For several years now, MSCs have been evaluated for their in vivo and in vitro immunomodulatory and ‘tissue reconstruction’ properties, which could make them interesting in various clinical settings, and particularly in organ transplantation. This paper aims to review current knowledge on the properties of MSCs and their use in pre-clinical and clinical studies in solid organ transplantation, and particularly in the field of liver transplantation. The first available clinical data seem to show that MSCs are safe to use, at least in the medium-term, but more time is needed to evaluate the potential adverse effects of long-term use. Many issues must be resolved on the correct use of MSCs. Intensive in vitro and pre-clinical research are the keys to a better understanding of the way that MSCs act, and to eventually lead to clinical success.
Collapse
|
17
|
Gimenes F, Teixeira JJV, de Abreu ALP, Souza RP, Pereira MW, da Silva VRS, Bôer CG, Maria-Engler SS, Bonini MG, Borelli SD, Consolaro MEL. Human leukocyte antigen (HLA)-G and cervical cancer immunoediting: a candidate molecule for therapeutic intervention and prognostic biomarker? Biochim Biophys Acta Rev Cancer 2014; 1846:576-89. [PMID: 25453366 DOI: 10.1016/j.bbcan.2014.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 10/14/2014] [Accepted: 10/14/2014] [Indexed: 02/06/2023]
Abstract
While persistent infection with oncogenic types of human Papillomavirus (HPV) is required for cervical epithelial cell transformation and cervical carcinogenesis, HPV infection alone is not sufficient to induce tumorigenesis. Only a minor fraction of HPV infections produce high-grade lesions and cervical cancer, suggesting complex host-virus interactions. Based on its pronounced immunoinhibitory properties, human leukocyte antigen (HLA)-G has been proposed as a possible prognostic biomarker and therapeutic target relevant in a wide variety of cancers and viral infections, but to date remains underexplored in cervical cancer. Given the possible influence of HLA-G on the clinical course of HPV infection, cervical lesions and cancer progression, a better understanding of HLA-G involvement in cervical carcinogenesis might contribute to two aspects of fundamental importance: 1. Characterization of a novel diagnostic/prognostic biomarker to identify cervical cancer and to monitor disease stage, critical for patient screening; 2. Identification of HLA-G-driven immune mechanisms involved in lesion development and cancer progression, leading to the development of strategies for modulating HLA-G expression for treatment purposes. Thus, this systematic review explores the potential involvement of HLA-G protein expression and polymorphisms in cervical carcinogenesis.
Collapse
Affiliation(s)
- Fabrícia Gimenes
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Jorge Juarez Vieira Teixeira
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - André Luelsdorf Pimenta de Abreu
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Raquel Pantarotto Souza
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Monalisa Wolski Pereira
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Vânia Ramos Sela da Silva
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Cinthia Gandolfi Bôer
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil
| | - Silvya Stuchi Maria-Engler
- Clinical Chemistry and Toxicology Department, School of Pharmaceutical Sciences, University of São Paulo, 05508000 São Paulo, Brazil
| | - Marcelo Gialluisi Bonini
- College of Medicine, Departments of Medicine, Pharmacology and Pathology, University of Illinois at Chicago, 60612 Chicago, IL, USA
| | - Sueli Donizete Borelli
- Laboratory of Immunogenetics, Department of Basic Health Sciences, State University of Maringá, 87020900 Paraná, Brazil
| | - Márcia Edilaine Lopes Consolaro
- Laboratory of Clinical Cytology, Department of Clinical Analysis and Biomedicine, State University of Maringá, 87020900 Paraná, Brazil.
| |
Collapse
|
18
|
Rebmann V, da Silva Nardi F, Wagner B, Horn PA. HLA-G as a tolerogenic molecule in transplantation and pregnancy. J Immunol Res 2014; 2014:297073. [PMID: 25143957 PMCID: PMC4131093 DOI: 10.1155/2014/297073] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/07/2014] [Accepted: 05/21/2014] [Indexed: 12/28/2022] Open
Abstract
HLA-G is a nonclassical HLA class I molecule. In allogeneic situations such as pregnancy or allograft transplantation, the expression of HLA-G has been related to a better acceptance of the fetus or the allograft. Thus, it seems that HLA-G is crucially involved in mechanisms shaping an allogeneic immune response into tolerance. In this contribution we focus on (i) how HLA-G is involved in transplantation and human reproduction, (ii) how HLA-G is regulated by genetic and microenvironmental factors, and (iii) how HLA-G can offer novel perspectives with respect to therapy.
Collapse
Affiliation(s)
- Vera Rebmann
- Institute for Transfusion Medicine, University Hospital Essen, Virchowstraße 179, 45147 Essen, Germany
| | - Fabiola da Silva Nardi
- Institute for Transfusion Medicine, University Hospital Essen, Virchowstraße 179, 45147 Essen, Germany
- CAPES Foundation, Ministry of Education of Brazil, 70.040-020 Brasília, DF, Brazil
| | - Bettina Wagner
- Institute for Transfusion Medicine, University Hospital Essen, Virchowstraße 179, 45147 Essen, Germany
| | - Peter A. Horn
- Institute for Transfusion Medicine, University Hospital Essen, Virchowstraße 179, 45147 Essen, Germany
| |
Collapse
|
19
|
Stout MJ, Cao B, Landeau M, French J, Macones GA, Mysorekar IU. Increased human leukocyte antigen-G expression at the maternal-fetal interface is associated with preterm birth. J Matern Fetal Neonatal Med 2014; 28:454-9. [PMID: 24797963 DOI: 10.3109/14767058.2014.921152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
UNLABELLED Abstract Objective: The maternal-fetal interface must modulate immune function to allow tolerance of fetal cells while still reacting to pathogens to suppress infection. Human leukocyte antigen-G (HLA-G) is a class Ib major histocompatibility complex protein involved in maternal-fetal tolerance. We posited that alterations in placental HLA-G expression predispose women to preterm birth. The aim of this study was to compare HLA-G expression in the maternal-fetal interface of term versus preterm human placentas. METHODS We performed a cross-sectional study of specimens from the basal plate of the human placenta from women enrolled in a tissue specimen and clinical data consortium. Immunohistochemistry with digital microscopic analysis was used to quantify HLA-G protein expression in the basal plate from preterm and term placentas. RESULTS Preterm birth <37 weeks occurred in 29.5% of 149 singleton pregnancies. HLA-G-positive cells occupied one-third of the basal plates, and the HLA-G-positive area was increased by 14% in placentas from preterm births than in those from term births (32.1% in term placentas versus 36.6% in preterm placentas). CONCLUSION Although HLA-G is required for maternal tolerance of the semi-allogeneic fetus, higher levels of HLA-G expression at the maternal-fetal interface is associated with preterm birth.
Collapse
|
20
|
Hsu P, Nanan RKH. Innate and adaptive immune interactions at the fetal-maternal interface in healthy human pregnancy and pre-eclampsia. Front Immunol 2014; 5:125. [PMID: 24734032 PMCID: PMC3975095 DOI: 10.3389/fimmu.2014.00125] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 03/11/2014] [Indexed: 11/13/2022] Open
Abstract
Maternal immune tolerance of the fetus is indispensable for a healthy pregnancy outcome. Nowhere is this immune tolerance more important than at the fetal–maternal interface – the decidua, the site of implantation, and placentation. Indeed, many lines of evidence suggest an immunological origin to the common pregnancy-related disorder, pre-eclampsia. Within the innate immune system, decidual NK cells and antigen presenting cells (including dendritic cells and macrophages) make up a large proportion of the decidual leukocyte population, and are thought to modulate vascular remodeling and trophoblast invasion. On the other hand, within the adaptive immune system, Foxp3+ regulatory T cells are crucial for ensuring immune tolerance toward the semi-allogeneic fetus. Additionally, another population of CD4+HLA-G+ suppressor T cells has also been identified as a potential player in the maintenance of immune tolerance. More recently, studies are beginning to unravel the potential interactions between the innate and the adaptive immune system within the decidua, that are required to maintain a healthy pregnancy. In this review, we discuss the recent advances exploring the complex crosstalk between the innate and the adaptive immune system during human pregnancy.
Collapse
Affiliation(s)
- Peter Hsu
- Charles Perkins Centre Nepean , Penrith, NSW , Australia ; Department of Allergy and Immunology, The Children's Hospital at Westmead , Sydney, NSW , Australia ; Sydney Medical School, The University of Sydney , Sydney, NSW , Australia
| | - Ralph Kay Heinrich Nanan
- Charles Perkins Centre Nepean , Penrith, NSW , Australia ; Sydney Medical School, The University of Sydney , Sydney, NSW , Australia
| |
Collapse
|
21
|
Blanco-García R, López-Álvarez M, Garrido I, Salgado-Cecilia G, Campillo J, Bolarín J, Gimeno L, Muro M, García-Alonso A, Martínez-Sánchez M, Bernardo Pisa M, Soriano-Díaz S, Pascual-Figal D, Álvarez-López M, Minguela A. Post-transplant increase in soluble human leukocyte antigen-G associated with non-severe cardiac allograft vasculopathy. Hum Immunol 2013; 74:318-24. [DOI: 10.1016/j.humimm.2012.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 11/30/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022]
|
22
|
White SR, Loisel DA, Stern R, Laxman B, Floreth T, Marroquin BA. Human leukocyte antigen-G expression in differentiated human airway epithelial cells: lack of modulation by Th2-associated cytokines. Respir Res 2013; 14:4. [PMID: 23327606 PMCID: PMC3560103 DOI: 10.1186/1465-9921-14-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 01/11/2013] [Indexed: 12/17/2022] Open
Abstract
Background Human leukocyte antigen (HLA)-G is a nonclassical class I antigen with immunomodulatory roles including up-regulation of suppressor T regulatory lymphocytes. HLA-G was recently identified as an asthma susceptibility gene, and expression of a soluble isoform, HLA-G5, has been demonstrated in human airway epithelium. Increased presence of HLA-G5 has been demonstrated in bronchoalveolar lavage fluid recovered from patients with mild asthma; this suggests a role for this isoform in modulating airway inflammation though the mechanisms by which this occurs is unclear. Airway inflammation associated with Th2 cytokines such as IL-4 and IL-13 is a principal feature of asthma, but whether these cytokines elicit expression of HLA-G is not known. Methods We examined gene and protein expression of both soluble (G5) and membrane-bound (G1) HLA-G isoforms in primary differentiated human airway epithelial cells collected from normal lungs and grown in air-liquid interface culture. Cells were treated with up to 10 ng/ml of either IL-4, IL-5, or IL-13, or 100 ng/ml of the immunomodulatory cytokine IL-10, or 10,000 U/ml of the Th1-associated cytokine interferon-beta, for 24 hr, after which RNA was isolated for evaluation by quantitative PCR and protein was collected for Western blot analysis. Results HLA-G5 but not G1 was present in dAEC as demonstrated by quantitative PCR, western blot and confocal microscopy. Neither G5 nor G1 expression was increased by the Th2-associated cytokines IL-4, IL-5 or IL-13 over 24 hr, nor after treatment with IL-10, but was increased 4.5 ± 1.4 fold after treatment with 10,000 U/ml interferon-beta. Conclusions These data demonstrate the constitutive expression of a T lymphocyte regulatory molecule in differentiated human airway epithelial cells that is not modulated by Th2-associated cytokines.
Collapse
Affiliation(s)
- Steven R White
- University of Chicago, Section of Pulmonary and Critical Care Medicine, Chicago, IL 60637, USA.
| | | | | | | | | | | |
Collapse
|
23
|
Park Y, Park Y, Lim HS, Kim YS, Hong DJ, Kim HS. Soluble human leukocyte antigen-G expression in hepatitis B virus infection and hepatocellular carcinoma. ACTA ACUST UNITED AC 2011; 79:97-103. [PMID: 22136460 DOI: 10.1111/j.1399-0039.2011.01814.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We investigated soluble human leukocyte antigen-G (sHLA-G) expression according to the phases of hepatitis B virus (HBV) infections and hepatocellular carcinoma (HCC). A total of 267 sera from anti-HBs positive healthy individuals (n = 50), chronic HBV carriers (n = 45), as well as patients with active hepatitis B (n = 46), liver cirrhosis (LC, n = 46) and early stage HCC (n = 80) were collected and assayed for sHLA-G. Relationships between sHLA-G levels and clinicopathologic parameters including HCC stages, differentiation grades, and levels of aminotransferases, HBV DNA and alpha-fetoprotein (AFP) were assessed. Concentrations of sHLA-G were higher in the active hepatitis B and HCC groups (median sHLA-G 53.7 and 178.8 U/ml, respectively) in comparison to other groups (P < 0.05), and there were no significant differences among sHLA-G levels of the anti-HBs positive, chronic HBV carrier and LC groups. Serum sHLA-G concentrations were not shown to be associated with clinicopathologic indices including the levels of aminotransferases, AFP, anti-HBs titer, HBV DNA, as well as HCC stages, numbers of tumor nodules, pathologic grades and presence of vessel invasion. The receiver-operating characteristic area under the curve (AUC) value of sHLA-G for differentiating HCC from LC was 0.98, which was greater than that of AFP (0.78) (P < 0.0001), and sensitivity and specificity of sHLA-G were, respectively, 90.0% and 95.7% for HCC when applying a cutoff level of 97.3 U/ml. Serum sHLA-G levels could be used as a diagnostic marker for HCC. Although sHLA-G levels did not reflect the severity of HBV infections and HCC, they were related with phases of the disease.
Collapse
Affiliation(s)
- Y Park
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
24
|
Immunologic regulation in pregnancy: from mechanism to therapeutic strategy for immunomodulation. Clin Dev Immunol 2011; 2012:258391. [PMID: 22110530 PMCID: PMC3216345 DOI: 10.1155/2012/258391] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 09/04/2011] [Accepted: 09/16/2011] [Indexed: 01/16/2023]
Abstract
The immunologic interaction between the fetus and the mother is a paradoxical communication that is regulated by fetal antigen presentation and/or by recognition of and reaction to these antigens by the maternal immune system. There have been significant advances in understanding of abnormalities in the maternal-fetal immunologic relationship in the placental bed that can lead to pregnancy disorders. Moreover, immunologic recognition of pregnancy is vital for the maintenance of gestation, and inadequate recognition of fetal antigens may cause abortion. In this paper, we illustrate the complex immunologic aspects of human reproduction in terms of the role of human leukocyte antigen (HLA), immune cells, cytokines and chemokines, and the balance of immunity in pregnancy. In addition, we review the immunologic processes of human reproduction and the current immunologic therapeutic strategies for pathological disorders of pregnancy.
Collapse
|
25
|
White SR. Human leucocyte antigen-G: expression and function in airway allergic disease. Clin Exp Allergy 2011; 42:208-17. [PMID: 22092595 DOI: 10.1111/j.1365-2222.2011.03881.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Human leucocyte antigen-G (HLA-G) is a non-classical HLA class I molecule demonstrated originally in placental trophoblast cells. Recognition of the importance of HLA-G to the maternal immune accommodation of the semi-allogeneic fetus has led to investigations of its role in the suppression of immune responses and induction of tolerance. More recently, HLA-G has been shown to have increased expression in several immunological diseases including asthma and allergic rhinitis. The focus of this review is the potential role of HLA-G in immunological airway diseases.
Collapse
Affiliation(s)
- S R White
- Department of Medicine, The University of Chicago, Chicago, IL 60637, USA.
| |
Collapse
|
26
|
HLA-G level on monocytoid dendritic cells correlates with regulatory T-cell Foxp3 expression in liver transplant tolerance. Transplantation 2011; 91:1132-40. [PMID: 21423069 DOI: 10.1097/tp.0b013e31821414c9] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Human leukocyte antigen (HLA)-G is a nonclassical HLA class I molecule expressed as membrane-bound and soluble isoforms. Interaction of HLA-G with its receptor, immunoglobulin-like transcript 4 on dendritic cells (DCs) down-regulates their T-cell stimulatory ability. METHODS We examined expression of HLA-G, immunoglobulin-like transcript 4, other immune regulatory molecules (inducible costimulator ligand and glucocorticoid-induced tumor necrosis factor-related receptor ligand), and the activation marker CMRF44 on circulating monocytoid dendritic cell (mDC) and plasmacytoid dendritic cell by monoclonal antibody staining and flow cytometry. Three groups of stable liver transplant recipients: operationally tolerant (TOL), prospective immunosuppressive drug weaning, and maintenance immunosuppression (MI) were studied, together with healthy controls (HC). Serum HLA-G levels were measured by enzyme-linked immunosorbent assay. RESULTS In TOL patients, monocytoid dendritic cell (mDC) but not plasmacytoid dendritic cell expressed higher HLA-G than in MI patients or HC. In TOL patients, the incidence of CD4(+)CD25(hi)CD127(-) regulatory T cells (Treg) and the intensity of Treg forkhead box p3 (Foxp3) expression were significantly higher than in the MI group. HLA-G expression on circulating mDC correlated significantly with that of Foxp3 in the TOL group. There was no correlation between immunosuppressive drug (tacrolimus) dose or trough level and HLA-G expression or Treg frequency or Foxp3 expression. The incidence of patients with circulating HLA-G levels more than 100 ng/mL was highest in the TOL group, although statistical significance was not achieved. CONCLUSIONS Higher HLA-G expression on circulating mDC in TOL recipients compared with MI or HC, suggests a possible role of HLA-G in immune regulation possibly mediated by enhanced host Treg Foxp3 expression.
Collapse
|
27
|
Deschaseaux F, Delgado D, Pistoia V, Giuliani M, Morandi F, Durrbach A. HLA-G in organ transplantation: towards clinical applications. Cell Mol Life Sci 2011; 68:397-404. [PMID: 21103908 PMCID: PMC11114658 DOI: 10.1007/s00018-010-0581-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 10/22/2010] [Indexed: 11/28/2022]
Abstract
HLA-G plays a particular role during pregnancy in which its expression at the feto-maternal barrier participates into the tolerance of the allogenic foetus. HLA-G has also been demonstrated to be expressed in some transplanted patients, suggesting that it regulates the allogenic response. In vitro data indicate that HLA-G modulates NK cells, T cells, and DC maturation through its interactions with various inhibitory receptors. In this paper, we will review the data reporting the HLA-G involvement of HLA-G in human organ transplantation, then factors that can modulate HLA-G, and finally the use of HLA-G as a therapeutic tool in organ transplantation.
Collapse
Affiliation(s)
| | - Diego Delgado
- Heart Transplant Program, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, Toronto, ON Canada
| | - Vito Pistoia
- Department of Neurosciences, Ophthalmology and Genetics, University of Genoa, Genoa, Italy
| | - Massimo Giuliani
- INSERM U1014, Département de Néphrologie, Hôpital du Kremlin-Bicêtre, IFRNT, Université Paris XI, 78 rue du Général Leclerc, 94270 Le Kremlin-Bicêtre, France
| | - Fabio Morandi
- Department of Neurosciences, Ophthalmology and Genetics, University of Genoa, Genoa, Italy
| | - Antoine Durrbach
- INSERM U1014, Département de Néphrologie, Hôpital du Kremlin-Bicêtre, IFRNT, Université Paris XI, 78 rue du Général Leclerc, 94270 Le Kremlin-Bicêtre, France
| |
Collapse
|
28
|
White SR, Loisel DA, McConville JF, Stern R, Tu Y, Marroquin BA, Noth I, Ober C. Levels of soluble human leukocyte antigen-G are increased in asthmatic airways. Eur Respir J 2010; 35:925-7. [PMID: 20356990 DOI: 10.1183/09031936.00164809] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
29
|
Abstract
PURPOSE OF REVIEW A fundamental goal in transplantation is the establishment of allograft function without ongoing immunosuppression. Robust allograft tolerance has been established in experimental transplantation models, whereas clinical operational tolerance has been described most frequently following human liver transplantation. RECENT FINDINGS Clinical assessment of tolerance has been limited to laboratory evaluation of organ function. Additional tools include graft monitoring through biopsy and blood sampling for biomarker analysis. Current biomarkers under assessment in recent years include dendritic cell subsets, regulatory T cells, antidonor antibodies, and gene polymorphisms. Emerging microarray analysis that is being prospectively validated will also be reviewed. A further tool in the characterization of the tolerant patient will be the accurate enrollment of such patients into a multicenter registry that will prospectively follow the natural history of the patient withdrawn from immunosuppression and help facilitate the entry of interested patients to mechanistic and immune monitoring trials. The International Solid Organ Transplant Tolerance Registry (www.transplant-tolerance.org) will be briefly described. SUMMARY Effective biomarker characterization of the operationally tolerant liver allograft recipient would allow earlier, well tolerated, prospective drug withdrawal with the goal of extending the potential benefits of drug minimization to an increasing number of patients in a more predictable fashion.
Collapse
|
30
|
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]
|
31
|
Sheshgiri R, Gustafsson F, Sheedy J, Rao V, Ross HJ, Delgado DH. Everolimus But Not Mycophenolate Mofetil Therapy Is Associated With Soluble HLA-G Expression in Heart Transplant Patients. J Heart Lung Transplant 2009; 28:1193-7. [DOI: 10.1016/j.healun.2009.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 07/14/2009] [Accepted: 07/15/2009] [Indexed: 10/20/2022] Open
|
32
|
Wu J, Zhang W, Hernandez-Lopez P, Fabelo E, Parikh M, Mulloy LL, Horuzsko A. Isoforms of human leukocyte antigen-G and their inhibitory receptors in human kidney allograft acceptance. Hum Immunol 2009; 70:988-94. [PMID: 19664670 DOI: 10.1016/j.humimm.2009.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 07/29/2009] [Accepted: 07/30/2009] [Indexed: 10/20/2022]
Abstract
Novel therapeutic strategies such as the modulation of dendritic cell and T-cell function have exhibited great potential in clinical transplantation. Human leukocyte antigen (HLA)-G is a molecule that plays a significant role in establishing complex mechanisms to protect semiallogeneic fetuses from rejection by the maternal immune system. The unique characteristics of both cell-surface and soluble isoforms of HLA-G, the formation of disulfide-bonded dimers with the potential to augment inhibitory receptor signaling, and the function of HLA-G as a preferential ligand for the immunoglobulin-like transcript receptors make HLA-G very important in fundamental approaches for the modulation of immune responses to improve allogeneic graft survival in clinical transplantation. Experimental data from several groups as well as our data from experiments involving HLA-G-mediated human tolerogenic dendritic cells in vitro and receptor transgenic mice in vivo indicate that different isoforms of HLA-G have various immunomodulatory effects through the inhibitory receptors. This knowledge is crucial in understanding mechanisms of prolongation of allograft survival. The analyses of HLA-G isoforms and inhibitory receptors in patients with kidney allograft and the relationship among different isoforms of HLA-G, inhibitory receptors, their mediated immunoregulation, and graft acceptance or failure will be discussed here.
Collapse
Affiliation(s)
- Juan Wu
- Center for Molecular Chaperone/Radiobiology and Cancer Virology, Department of Medicine, Medical College of Georgia, Augusta, GA 30912, USA
| | | | | | | | | | | | | |
Collapse
|
33
|
HLA-G is a crucial immunosuppressive molecule secreted by adult human mesenchymal stem cells. Transplantation 2009; 87:S62-6. [PMID: 19424010 DOI: 10.1097/tp.0b013e3181a2a4b3] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Adult bone marrow-derived mesenchymal stem cells (MSCs) are multipotential cells capable of regenerating injured tissues. In addition to their multipotency, MSCs inhibit natural killer cell cytotoxicity and T-lymphocyte alloproliferation. Several immunosuppressive mechanisms have been described, including indoleamine 2, 3, -dioxygenase-induced depletion of tryptophan from the lymphocyte environment, and the secretion of prostaglandin E2 and other immunosuppressive factors. Here, we review data supporting a new MSC immunoregulation pathway, in which the key molecule is the human leukocyte antigen-G protein. This nonclassical human leukocyte antigen-class I molecule was initially found on trophoblasts, where it contributes to tolerance at the materno-fetal interface. Because trophoblasts are also able to express indoleamine 2, 3, -dioxygenase and prostaglandin E2, MSC immunomodulatory properties are similar to those of trophoblasts. These mechanisms should be explored in relation to induction of tolerance to alloantigens for the prevention of graft rejection after transplantation.
Collapse
|
34
|
Human inhibitory receptor immunoglobulin-like transcript 2 amplifies CD11b+Gr1+ myeloid-derived suppressor cells that promote long-term survival of allografts. Transplantation 2008; 86:1125-34. [PMID: 18946352 DOI: 10.1097/tp.0b013e318186fccd] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND The expression of human leukocyte antigen (HLA)-G during allogeneic recognition is associated with better graft acceptance. The inhibitory receptor immunoglobulin-like transcript (ILT)-2 is expressed on activated T cells and serves to shut down T-cell activation, culminating in T-cell death, or induction of anergy. One of the potential mechanisms in the immunosuppressive accomplishment of HLA-G-ILT2 interactions involves the expansion of myeloid-derived suppressor cells (MDSCs). The potential of MDSCs in transplantation has not yet been exploited. METHODS (1) Detailed phenotypic characteristics, immunosuppressive potential of MDSCs expanded by means of inhibitory receptor ILT2 and its ligands, and allogeneic transplant-activated MDSCs were obtained in mice. (2) Oligo- and real-time pathway-specific polymerase chain reaction arrays were performed to characterize ILT2-specific MDSCs. (3) Skin allograft survival after adoptive transfer of MDSCs was studied. RESULTS Engagement of ILT2 receptors, especially by HLA-G, expanded the population of MDSCs with enhanced suppressive activity. Adoptive transfer of MDSCs generated by ILT2 receptor and its ligands prolonged graft survival in recipients of allogeneic skin transplant. We have proposed pathways for enhancement of immunosuppressive activities and expansion of MDSCs by ILT2 and HLA-G. CONCLUSIONS Our results suggest that induction of MDSCs using ILT2 inhibitory receptor/HLA-G ligand may be an attractive strategy for preventing rejection of immunogenic organs or tissues in clinical transplantation.
Collapse
|
35
|
Moreau P, Contu L, Alba F, Lai S, Simoes R, Orrù S, Carcassi C, Roger M, Rabreau M, Carosella ED. HLA-G gene polymorphism in human placentas: possible association of G*0106 allele with preeclampsia and miscarriage. Biol Reprod 2008; 79:459-67. [PMID: 18509163 DOI: 10.1095/biolreprod.108.068874] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Definite causes for several pathologies of pregnancy remain unknown. In light of several recent studies, however, diminished or aberrant HLA-G expression may be associated with certain complication of pregnancy and be linked to HLA-G polymorphism. We analyzed DNA from 60 normal placentas (controls), 140 placentas from miscarriage, 36 placentas from preeclampsia, 76 placentas from fetal hypotrophy, and 34 placentas with hypoxia for variations in coding regions (allelic groups G*0101 to G*0107) and the 14-bp deletion/insertion into the 3'-untranslated region. No statistically significant differences were observed in the distribution of allelic group between pathological placentas and controls with the exception of G*0106 allele frequency in preeclamptic compared with control placentas (21.2% and 6.6%, respectively). A greater frequency of this allele also was observed in the two subgroups of miscarriage and hypoxia compared with that in controls. In addition, presence of the 14-bp sequence was prominent in preeclampsia compared with controls (60.8% vs. 35%, respectively), and homozygotes with deletion were not detected in the pathology. The results suggest that the G*0106 allele, which is coupled with the presence of the 14-bp sequence, contributes and/or is a relevant marker in some specific complications of pregnancy, especially preeclampsia.
Collapse
Affiliation(s)
- Philippe Moreau
- Commissariat à l'Energie Atomique, IBM, Service de Recherches en Hémato-Immunologie, IUH, Hôpital Saint-Louis, 75475 Paris, France.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Rouas-Freiss N, Moreau P, Menier C, LeMaoult J, Carosella ED. Expression of tolerogenic HLA-G molecules in cancer prevents antitumor responses. Semin Cancer Biol 2007; 17:413-21. [PMID: 17881247 DOI: 10.1016/j.semcancer.2007.07.003] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Indexed: 01/22/2023]
Abstract
In this paper, we focus our attention on the relevance of HLA-G in cancer in the light of our recent advances on the expression and immunological function of HLA-G. Regarding HLA-G function, we recently showed that in addition to its direct inhibitory effects on T, APC and NK function, HLA-G induces suppressor cells via two distinct processes: (i) either by cell differentiation of naïve T cells into lasting suppressor T cells or (ii) by rapid transfer of HLA-G from APC or tumor cells to T or NK cells converting them into temporary HLA-G-positive suppressor cells. Regarding HLA-G expression, we described that tumor-microenvironment factors such as hypoxia, IDO and, TNF-alpha regulate the expression of HLA-G by tumor cells in a way that favors tumor escape from NK lysis. These findings reinforce the role of HLA-G as one mechanism of tumor-driven immune evasion and provide potential targets for testing novel anticancer treatment strategies.
Collapse
Affiliation(s)
- Nathalie Rouas-Freiss
- CEA, DSV, I2BM, Service de Recherches en Hémato-Immunologie, Hôpital Saint-Louis, IUH, 1 avenue Claude Vellefaux, 75010 Paris, France.
| | | | | | | | | |
Collapse
|
37
|
Selmani Z, Naji A, Zidi I, Favier B, Gaiffe E, Obert L, Borg C, Saas P, Tiberghien P, Rouas-Freiss N, Carosella ED, Deschaseaux F. Human leukocyte antigen-G5 secretion by human mesenchymal stem cells is required to suppress T lymphocyte and natural killer function and to induce CD4+CD25highFOXP3+ regulatory T cells. Stem Cells 2007; 26:212-22. [PMID: 17932417 DOI: 10.1634/stemcells.2007-0554] [Citation(s) in RCA: 757] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adult bone marrow-derived mesenchymal stem cells (MSCs) are multipotent cells that are the subject of intense investigation in regenerative medicine. In addition, MSCs possess immunomodulatory properties with therapeutic potential to prevent graft-versus-host disease (GvHD) in allogeneic hematopoietic cell transplantation. Indeed, MSCs can inhibit natural killer (NK) function, modulate dendritic cell maturation, and suppress allogeneic T-cell response. Here, we report that the nonclassic human leukocyte antigen (HLA) class I molecule HLA-G is responsible for the immunomodulatory properties of MSCs. Our data show that MSCs secrete the soluble isoform HLA-G5 and that such secretion is interleukin-10-dependent. Moreover, cell contact between MSCs and allostimulated T cells is required to obtain a full HLA-G5 secretion and, as consequence, a full immunomodulation from MSCs. Blocking experiments using neutralizing anti-HLA-G antibody demonstrate that HLA-G5 contributes first to the suppression of allogeneic T-cell proliferation and then to the expansion of CD4(+)CD25(high)FOXP3(+) regulatory T cells. Furthermore, we demonstrate that in addition to their action on the adaptive immune system, MSCs, through HLA-G5, affect innate immunity by inhibiting both NK cell-mediated cytolysis and interferon-gamma secretion. Our results provide evidence that HLA-G5 secreted by MSCs is critical to the suppressive functions of MSCs and should contribute to improving clinical therapeutic trials that use MSCs to prevent GvHD.
Collapse
Affiliation(s)
- Zohair Selmani
- Institut National de la Santé et de la Recherche Médicale U645, IFR 133, Universite de Franche-Comte, Etablissement Français du Sang Bourgogne-Franche-Comte, Besançon, France
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|