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Lehmann C, Pehnke S, Weimann A, Bachmann A, Dittrich K, Petzold F, Fürst D, de Fallois J, Landgraf R, Henschler R, Lindner TH, Halbritter J, Doxiadis I, Popp B, Münch J. Extended genomic HLA typing identifies previously unrecognized mismatches in living kidney transplantation. Front Immunol 2023; 14:1094862. [PMID: 36776892 PMCID: PMC9911689 DOI: 10.3389/fimmu.2023.1094862] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/12/2023] [Indexed: 01/28/2023] Open
Abstract
Introduction Antibody mediated rejection (ABMR) is the most common cause of long-term allograft loss in kidney transplantation (KT). Therefore, a low human leukocyte antigen (HLA) mismatch (MM) load is favorable for KT outcomes. Hitherto, serological or low-resolution molecular HLA typing have been adapted in parallel. Here, we aimed to identify previously missed HLA mismatches and corresponding antibodies by high resolution HLA genotyping in a living-donor KT cohort. Methods 103 donor/recipient pairs transplanted at the University of Leipzig Medical Center between 1998 and 2018 were re-typed using next generation sequencing (NGS) of the HLA loci -A, -B, -C, -DRB1, -DRB345, -DQA1, -DQB1, -DPA1, and -DPB1. Based on these data, we compiled HLA MM counts for each pair and comparatively evaluated genomic HLA-typing with pre-transplant obtained serological/low-resolution HLA (=one-field) typing results. NGS HLA typing (=two-field) data was further used for reclassification of de novo HLA antibodies as "donor-specific". Results By two-field HLA re-typing, we were able to identify additional MM in 64.1% (n=66) of cases for HLA loci -A, -B, -C, -DRB1 and -DQB1 that were not observed by one-field HLA typing. In patients with biopsy proven ABMR, two-field calculated MM count was significantly higher than by one-field HLA typing. For additional typed HLA loci -DRB345, -DQA1, -DPA1, and -DPB1 we observed 2, 26, 3, and 23 MM, respectively. In total, 37.3% (69/185) of de novo donor specific antibodies (DSA) formation was directed against these loci (DRB345 ➔ n=33, DQA1 ➔ n=33, DPA1 ➔ n=1, DPB1 ➔ n=10). Conclusion Our results indicate that two-field HLA typing is feasible and provides significantly more sensitive HLA MM recognition in living-donor KT. Furthermore, accurate HLA typing plays an important role in graft management as it can improve discrimination between donor and non-donor HLA directed cellular and humoral alloreactivity in the long range. The inclusion of additional HLA loci against which antibodies can be readily detected, HLA-DRB345, -DQA1, -DQB1, -DPA1, and -DPB1, will allow a more precise virtual crossmatch and better prediction of potential DSA. Furthermore, in living KT, two-field HLA typing could contribute to the selection of the immunologically most suitable donors.
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Affiliation(s)
- Claudia Lehmann
- Institute for Transfusion Medicine, University Hospital Leipzig, Leipzig, Germany
| | - Sarah Pehnke
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Antje Weimann
- Division of Visceral Surgery and Transplantation Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Anette Bachmann
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Katalin Dittrich
- Department of Pediatric Nephrology, University of Leipzig Medical Center, Leipzig, Germany
| | - Friederike Petzold
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Daniel Fürst
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Jonathan de Fallois
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Ramona Landgraf
- Institute for Transfusion Medicine, University Hospital Leipzig, Leipzig, Germany
| | - Reinhard Henschler
- Institute for Transfusion Medicine, University Hospital Leipzig, Leipzig, Germany
| | - Tom H Lindner
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany
| | - Jan Halbritter
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany.,Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Ilias Doxiadis
- Institute for Transfusion Medicine, University Hospital Leipzig, Leipzig, Germany
| | - Bernt Popp
- Institute of Human Genetics, University of Leipzig, Leipzig, Germany
| | - Johannes Münch
- Division of Nephrology, Department of Internal Medicine, University of Leipzig Medical Center, Leipzig, Germany.,Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
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Major histocompatibility complex (MHC) antigens polymorphism and alloimmunization study in thalassemia patients with febrile non-hemolytic transfusion reaction (FNHTR). Transfus Clin Biol 2022; 30:205-211. [PMID: 36328308 DOI: 10.1016/j.tracli.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVES HLA alloimmunization is one of the most troublesome consequence of regular transfusion which is itself a mainstay measure to provide longevity to the thalassemia patients. Febrile non-hemolytic transfusion reaction (FNHTR) is one of the most common complication which might be related to the HLA alloimmunization. Here, we studied the HLA antigenic system and alloimmunization rate in the Iranian β-thalassemia patients who suffered from FNHTR compare to the β-thalassemia patients without FNHTR. MATERIALS & METHODS Total of 60 β-thalassemia patients with FNHTR (case group) and 20 β-thalassemia patients without FNHTR (control group) randomly have been selected and enrolled in the study. All were tested for HLA-A and -B loci by PCR-SSP method and also for the presence of anti-lymphocyte antibodies by LIFT method. Comparisons between two groups were performed by Pearson's χ2 test. RESULTS Totally, a significant predominance was noted for two HLA alleles, HLA-A*24 (P = 0.029) and B*55 (P = 0.034) which have higher prevalence in control group. Although no significant association was found between the presence of anti-leukocyte antibodies and the development of FNHTR, the HLA-A*32 (P = 0.047) allele was considered as possible genetic markers in the susceptibility to the development of anti-leukocyte antibodies. CONCLUSION Here some evidences about the possible role of HLA polymorphism in susceptibility to FNHTR are provided. Those results indicated that HLA-A*24 and HLA-B*55 might play protective role on inducing FNHTR in β-thalassemia patients. Further studies which investigate the allele level of HLA-I alongside with specific reactivity of HLA-I antibodies might reveal more deep data about these phenomena.
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Legaz I, Bernardo MV, Alfaro R, Martínez-Banaclocha H, Galián JA, Jimenez-Coll V, Boix F, Mrowiec A, Salmeron D, Botella C, Parrado A, Moya-Quiles MR, Minguela A, Llorente S, de la Peña-Moral J, Muro M. PCR Array Technology in Biopsy Samples Identifies Up-Regulated mTOR Pathway Genes as Potential Rejection Biomarkers After Kidney Transplantation. Front Med (Lausanne) 2021; 8:547849. [PMID: 33681239 PMCID: PMC7927668 DOI: 10.3389/fmed.2021.547849] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Antibody-mediated rejection (AMR) is the major cause of kidney transplant rejection. The donor-specific human leukocyte antigen (HLA) antibody (DSA) response to a renal allograft is not fully understood yet. mTOR complex has been described in the accommodation or rejection of transplants and integrates responses from a wide variety of signals. The aim of this study was to analyze the expression of the mTOR pathway genes in a large cohort of kidney transplant patients to determine its possible influence on the transplant outcome. Methods: A total of 269 kidney transplant patients monitored for DSA were studied. The patients were divided into two groups, one with recipients that had transplant rejection (+DSA/+AMR) and a second group of recipients without rejection (+DSA/-AMR and -DSA/-AMR, controls). Total RNA was extracted from kidney biopsies and reverse transcribed to cDNA. Human mTOR-PCR array technology was used to determine the expression of 84 mTOR pathway genes. STRING and REVIGO software were used to simulate gene to gene interaction and to assign a molecular function. Results: The studied groups showed a different expression of the mTOR pathway related genes. Recipients that had transplant rejection showed an over-expressed transcript (≥5-fold) of AKT1S1, DDIT4, EIF4E, HRAS, IGF1, INS, IRS1, PIK3CD, PIK3CG, PRKAG3, PRKCB (>12-fold), PRKCG, RPS6KA2, TELO2, ULK1, and VEGFC, compared with patients that did not have rejection. AKT1S1 transcripts were more expressed in +DSA/-AMR biopsies compared with +DSA/+AMR. The main molecular functions of up-regulated gene products were phosphotransferase activity, insulin-like grown factor receptor and ribonucleoside phosphate binding. The group of patients with transplant rejection also showed an under-expressed transcript (≥5-fold) of VEGFA (>15-fold), RPS6, and RHOA compared with the group without rejection. The molecular function of down-regulated gene products such as protein kinase activity and carbohydrate derivative binding proteins was also analyzed. Conclusions: We have found a higher number of over-expressed mTOR pathway genes than under-expressed ones in biopsies from rejected kidney transplants (+DSA/+AMR) with respect to controls. In addition to this, the molecular function of both types of transcripts (over/under expressed) is different. Therefore, further studies are needed to determine if variations in gene expression profiles can act as predictors of graft loss, and a better understanding of the mechanisms of action of the involved proteins would be necessary.
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Affiliation(s)
- Isabel Legaz
- Department of Legal and Forensic Medicine, Faculty of Medicine, Biomedical Research Institute (IMIB), University of Murcia, Murcia, Spain
| | - María Victoria Bernardo
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Rafael Alfaro
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Helios Martínez-Banaclocha
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Jose Antonio Galián
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Victor Jimenez-Coll
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Francisco Boix
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Anna Mrowiec
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Diego Salmeron
- Departamento de Ciencias Sociosanitarias, Universidad de Murcia, Murcia, Spain
- Centro de Investigación Biomédica en Red (CIBER) Epidemiología y Salud Pública (CIBERESP), Murcia, Spain
- Instituto Murciano de Investigacion Biomédica-Arrixaca, Murcia, Spain
| | - Carmen Botella
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Antonio Parrado
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - María Rosa Moya-Quiles
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Alfredo Minguela
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Santiago Llorente
- Department of Nephrology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Jesús de la Peña-Moral
- Department of Pathology Services, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Manuel Muro
- Department of Immunology, University Clinical Hospital Virgen de la Arrixaca-Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
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4
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Influence of Preformed Antibodies in Liver Transplantation. J Clin Med 2020; 9:jcm9030708. [PMID: 32151032 PMCID: PMC7141359 DOI: 10.3390/jcm9030708] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022] Open
Abstract
The significance of human leukocyte antigen (HLA) matching and preformed donor-specific antibodies (DSAs) in liver transplantation remains unclear. The aim of this study was to analyze the presence of DSAs in a large cohort of 810 liver recipients undergoing liver transplant to determine the influence on acute (AR) or chronic liver rejection (CR), graft loss and allograft survival. DSAs were identified using complement dependent cytotoxicity crossmatch (CDC-CM) and multiplexed solid-phase-based flow cytometry assay (Luminex). CDC-CM showed that a 3.2% of liver transplants were positive (+CDC-CM) with an AR frequency of 19.2% which was not different from that observed in negative patients (-CDC-CM, 22.3%). Only two patients transplanted with +CDC-CM (7.6%) developed CR and suffered re-transplant. +CDC-CM patients showed a significantly lower survival rate compared to -CDC-CM patients (23.1% vs. 59.1%, p = 0.0003), developing allograft failure within the first three months (p < 0.00001). In conclusion, we have demonstrated a relationship between the presence of preformed DSAs and the low graft liver survival, indicating the important role and the potential interest of performing this analysis before liver transplantation. Our results could help to detect patients with an increased risk of graft loss, a better choice of liver receptors as well as the establishment of individualized immunosuppressive regimens.
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5
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High background in Luminex® assay for HLA antibody screening: Interest of Adsorb Out™. Transpl Immunol 2016; 36:20-4. [DOI: 10.1016/j.trim.2016.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/09/2016] [Accepted: 03/10/2016] [Indexed: 11/23/2022]
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6
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Galián JA, Mrowiec A, Muro M. Molecular targets on B-cells to prevent and treat antibody-mediated rejection in organ transplantation. Present and Future. Expert Opin Ther Targets 2016; 20:859-67. [DOI: 10.1517/14728222.2016.1135904] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jose A. Galián
- Immunology Service, Clinical University Hospital Virgen de la Arrixaca-IMIB, Murcia, Spain
| | - Anna Mrowiec
- Immunology Service, Clinical University Hospital Virgen de la Arrixaca-IMIB, Murcia, Spain
| | - Manuel Muro
- Immunology Service, Clinical University Hospital Virgen de la Arrixaca-IMIB, Murcia, Spain
- Head of Regional Histocompatibility and Transplant Immunology Laboratory (LRHI), Clinical University Hospital Virgen de la Arrixaca-IMIB, Murcia, Spain
- Net of Biomedical Research in Digestive and Liver Diseases (CIBERehd), Barcelona, Spain
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7
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Hickey MJ, Valenzuela NM, Reed EF. Alloantibody Generation and Effector Function Following Sensitization to Human Leukocyte Antigen. Front Immunol 2016; 7:30. [PMID: 26870045 PMCID: PMC4740371 DOI: 10.3389/fimmu.2016.00030] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/20/2016] [Indexed: 02/06/2023] Open
Abstract
Allorecognition is the activation of the adaptive immune system to foreign human leukocyte antigen (HLA) resulting in the generation of alloantibodies. Due to a high polymorphism, foreign HLA is recognized by the immune system following transplant, transfusion, or pregnancy resulting in the formation of the germinal center and the generation of long-lived alloantibody-producing memory B cells. Alloantibodies recognize antigenic epitopes displayed by the HLA molecule on the transplanted allograft and contribute to graft damage through multiple mechanisms, including (1) activation of the complement cascade resulting in the formation of the MAC complex and inflammatory anaphylatoxins, (2) transduction of intracellular signals leading to cytoskeletal rearrangement, growth, and proliferation of graft vasculature, and (3) immune cell infiltration into the allograft via FcγR interactions with the FC portion of the antibody. This review focuses on the generation of HLA alloantibody, routes of sensitization, alloantibody specificity, and mechanisms of antibody-mediated graft damage.
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Affiliation(s)
- Michelle J Hickey
- Department of Pathology and Laboratory Medicine, UCLA Immunogenetics Center, University of California Los Angeles , Los Angeles, CA , USA
| | - Nicole M Valenzuela
- Department of Pathology and Laboratory Medicine, UCLA Immunogenetics Center, University of California Los Angeles , Los Angeles, CA , USA
| | - Elaine F Reed
- Department of Pathology and Laboratory Medicine, UCLA Immunogenetics Center, University of California Los Angeles , Los Angeles, CA , USA
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8
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Delbos F, Barhoumi W, Cabanne L, Beckerich F, Robin C, Redjoul R, Astati S, Toma A, Pautas C, Ansart-Pirenne H, Cordonnier C, Bierling P, Maury S. Donor Immunization Against Human Leukocyte Class II Antigens is a Risk Factor for Graft-versus-Host Disease. Biol Blood Marrow Transplant 2016; 22:292-299. [DOI: 10.1016/j.bbmt.2015.09.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/25/2015] [Indexed: 12/20/2022]
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9
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Resse M, Paolillo R, Minucci BP, Moccia G, Napoli C. Antibody-reactive class I epitopes defined by pairs of mismatched eplets and self-eplets. ACTA ACUST UNITED AC 2015; 86:368-72. [PMID: 26373475 DOI: 10.1111/tan.12652] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 08/05/2015] [Accepted: 08/17/2015] [Indexed: 01/06/2023]
Abstract
The identification of human leukocyte antigen (HLA) antibodies in the sera of candidates awaiting organ transplantation has evolved over time. This has been possible because of the introduction of more sensitive techniques and to the increasing focus on the structural aspects of the HLA epitopes. The use of the HLAMatchmaker algorithm in the analysis of positive sera and the verification of HLA ABC epitopes in the HLA Epitope Registry website provide new stimuli on the interpretation of antibody reactivity. The epitopes defined by eplet pairs often involve a nonself-eplet and a self-eplet (nonself-self paradigm), suggesting that the antibody response to an HLA mismatch must have an auto-reactive component. Here, we report an application of the nonself-self paradigm that provides a basis for better knowledge and interpretation of HLA-antibody reactivity in Luminex assays with single alleles.
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Affiliation(s)
- M Resse
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Ospedaliera Universitaria (AOU), Second University of Naples, Naples, Italy
| | - R Paolillo
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Ospedaliera Universitaria (AOU), Second University of Naples, Naples, Italy
| | - B P Minucci
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Ospedaliera Universitaria (AOU), Second University of Naples, Naples, Italy
| | - G Moccia
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Ospedaliera Universitaria (AOU), Second University of Naples, Naples, Italy
| | - C Napoli
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Ospedaliera Universitaria (AOU), Second University of Naples, Naples, Italy.,Department of Medical, Surgical, Neurological, Metabolic and Geriatric Sciences, Second University of Naples, Naples, Italy
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Epitope-specificities of HLA antibodies: the effect of epitope structure on Luminex technique-dependent antibody reactivity. Hum Immunol 2015; 76:297-300. [PMID: 25700961 DOI: 10.1016/j.humimm.2015.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/27/2014] [Accepted: 02/10/2015] [Indexed: 01/13/2023]
Abstract
The search of HLA antibodies is currently more accessible by solid-phase techniques (Luminex) in the immunized patients leading to an expansion of the antibody patterns. The aim of this study was to investigate low median fluorescence intensity value in unexpected reactivity patterns. Here, we performed HLAMatchmaker analyses to evaluate the potential functional epitopes that can elicit HLA-specific alloantibody responses in a pregnancy-sensitized woman with an epitope defined by the 82LR. Surprisingly, in according to the registry of HLA epitopes, we found that 82LR epitope covered all allelic specificities of our unexpected antibody patterns, shared between Bw4-positive HLA-B antigen and HLA-A23, -A24, -A25 and -A32. This finding is consistent with the verification of HLA ABC epitope recorded in the website-based HLA Epitope Registry and addresses the importance of determining HLA antibody epitope-specificities on Luminex technique-dependent antibody reactivity.
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11
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Complement-binding donor epitope sharing antibodies in a kidney transplant recipient. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2014; 13:161-3. [PMID: 25369600 DOI: 10.2450/2014.0142-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 10/02/2014] [Indexed: 11/21/2022]
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12
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López-Hernández R, Valdés M, Campillo JA, Martínez-García P, Salama H, Bolarin JM, Martínez H, Moya-Quiles MR, Minguela A, Sánchez-Torres A, Botella C, Salgado G, Miras M, Carballo F, Muro M. Pro- and anti-inflammatory cytokine gene single-nucleotide polymorphisms in inflammatory bowel disease. Int J Immunogenet 2014; 42:38-45. [PMID: 25359546 DOI: 10.1111/iji.12160] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 09/16/2014] [Accepted: 10/06/2014] [Indexed: 12/30/2022]
Abstract
Anti-inflammatory cytokines have an important role in disease, tumour and transplant processes. Alterations in the regulation of several cytokines have been implicated in a variety of inflammatory disorders, including IBD (inflammatory bowel disease) [Crohn's disease (CD) and ulcerative colitis (UC)]. Cytokine polymorphisms are also known to affect the level of gene expression. Thus, the aim of this study was to determine the relationship between cytokine polymorphisms and the IBD pathologies in a Spanish population. Polymorphisms analysis was performed using PCR-SSOP using a microbeads luminex assay. The following polymorphisms were determined: TNFα [-238G/A (rs361525) and -308G/A (rs1800629)], IFNγ [+874A/T (rs62559044)], TGFβ [+869C/T (rs1982073) and +915G/C (rs1800471)], IL10 [-1082A/A (rs1800896), -592A/C (rs1800872), -819C/T (rs1800871)], IL6 [-174C/G (rs1800795)], IL12p40 [3'UTR -1188A/C (rs3212227)], IL1α [-889C/T (rs1800587)], IL1β [-511C/T (rs1143634) and +3962C/T (rs1143633)], IL1R [Pst-1 1970C/T] and IL1RA [Mspa-1 11100C/T]. No statistical differences in TNFα, IFNγ, TGFβ, IL10, IL6, IL1α, IL1β, IL1R and IL1Ra genotypes and allele distributions between the IBD groups and healthy controls were found. However, we observed significant differences in the 3'UTR -1188A/C polymorphism of IL12p40. So -1188A allele was increased in patients with UC and the -1188C allele (high IL12p40 production) was increased in patients with CD with respect to controls. These data are in concordance with the fact that CD has been shown to be associated with a Th1 T-cell-mediated inflammation model and high IL12/IFNγ production at histological affected sites. These data suggest that cytokine polymorphisms in TNFα, IFNγ, TGFβ, IL10, IL6 and IL1α, IL1β, IL1R and IL1Ra cytokine gene do not seem to be relevant in IBD susceptibility and IL12p40 3'UTR -1188A/C polymorphism seems to be associated with a differential IBD development.
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Affiliation(s)
- R López-Hernández
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
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13
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Bosch A, Llorente S, Eguia J, Mrowiec A, Boix F, López-Hernández R, Campillo JA, Salgado G, Moya-Quiles MR, Minguela A, Jimeno L, Álvarez-López MR, Muro M. HLA-C antibodies are associated with irreversible rejection in kidney transplantation: Shared molecular eplets characterization. Hum Immunol 2014; 75:338-41. [DOI: 10.1016/j.humimm.2014.01.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 01/03/2014] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
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14
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McMurtrey C, Lowe D, Buchli R, Daga S, Royer D, Humphrey A, Cate S, Osborn S, Mojsilovic A, VanGundy R, Bardet W, Duty A, Mojsilovic D, Jackson K, Stastny P, Briggs D, Zehnder D, Higgins R, Hildebrand W. Profiling antibodies to class II HLA in transplant patient sera. Hum Immunol 2014; 75:261-70. [DOI: 10.1016/j.humimm.2013.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 11/05/2013] [Accepted: 11/11/2013] [Indexed: 12/14/2022]
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15
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Muro M, Mondejar-López P, Moya-Quiles MR, Salgado G, Pastor-Vivero MD, Lopez-Hernandez R, Boix F, Campillo JA, Minguela A, Garcia-Alonso A, Sánchez-Solís M, Álvarez-López MR. HLA-DRB1 and HLA-DQB1 genes on susceptibility to and protection from allergic bronchopulmonary aspergillosis in patients with cystic fibrosis. Microbiol Immunol 2013; 57:193-7. [PMID: 23278646 DOI: 10.1111/1348-0421.12020] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 12/17/2012] [Accepted: 12/17/2012] [Indexed: 01/17/2023]
Abstract
Allergic bronchopulmonary aspergillosis (ABPA) is a hypersensitivity pulmonary disease that affects both patients with cystic fibrosis (CF) and those with asthma. HLA-DRB1 alleles have previously been associated with ABPA-CF susceptibility; however, HLA-DQB1 allele associations have not been clearly established. The aim of the present study was to investigate HLA class II associations in patients with ABPA-CF and determine their roles in susceptibility or protection. Patients with ABPA-CF, patients with CF without ABPA, patients with asthma without ABPA (AST), and healthy controls were included in this study. DNA was extracted by automatic extractor. HLA-DRB1 and -DQB1 genotyping was performed by the Luminex PCR-SSOP method (One Lambda, Canoga Park, CA, USA). Allele specific PCR-SSP was also performed by high-resolution analysis (One Lambda). Statistical analysis was performed with SSPS and Arlequin software. Both HLA-DRB1*5:01 and -DRB1*11:04 alleles occurred with greater frequency in patients with ABPA-CF than in those with AST and CF and control subjects, corroborating previously published data. On the other hand, analysis of haplotypes revealed that almost all patients with ABPA-CF lacking DRB1*15:01 or DRB1*11:04 carry either DRB1*04, DRB1*11:01, or DRB1*07:01 alleles. In the HLA-DQB1 region, the HLA-DQB1*06:02 allele occurred more frequently in patients with ABPA-CF than in those with AST and CF and healthy controls, whereas HLA-DQB1*02:01 occurred less frequently in patients with ABPA-CF. These data confirm that there is a correlation between HLA-DRB1*15:01, -DRB1*11:04, DRB1*11:01, -DRB1*04 and -DRB1*07:01 alleles and ABPA-CF susceptibility and suggest that HLA-DQB1*02:01 is an ABPA-CF resistance allele.
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Affiliation(s)
- Manuel Muro
- Immunology Service, University Hospital Virgen Arrixaca, Madrid-Cartagena Rd, 30120, El Palmar, Murcia, Spain.
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Anti-HLA-A, -B, -DR, -DQB1 and -DQA1 antibodies reactive epitope determination with HLAMatchmaker in multipare awaiting list for heart transplant. Hum Immunol 2013; 74:937-41. [PMID: 23628396 DOI: 10.1016/j.humimm.2013.04.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 03/05/2013] [Accepted: 04/10/2013] [Indexed: 11/22/2022]
Abstract
Human leukocyte antigen (HLA) antibodies represent a significant risk factor for transplant failure. It is very important to characterize anti-HLA antibodies as epitopes rather than antigens so that this knowledge can be applied clinically. The aim of the study was to investigate the extra reactivity patterns in sensitized multipare. Here, we have used the HLAMatchmaker program, a theoretical algorithm, to explain these unexpected antibody reactivity patterns in multipare awaiting for heart transplant. The patient was sensitized during pregnancy by alleles HLA-A(*)24:02, HLA-DRB1(*)07:01, HLA-DRB4(*)01:01, DQB1(*)02:02 and DQA1(*)02:01 mismatches with development of respective antibodies. However, the patient' sera were shown an unexpected reactivity not directed toward HLA mismatches of daughters: A(∗)23:01, A(*)24:03 and B(*)15:12 for class I and DRB4(*)01:03, DRB1(*)09:02, DRB1(*)09:01, DQB1(*)03:01, DQB1(*)03:03, DQB1(*)03:02, DQB1(*)04:02, DQB1(*)04:01 and DQB1(*)02:01 for class II. By HLAMatchmaker analysis we found that these antibodies reacted with eplet shared by antigens in single allele Luminex panels. These eplets were: 62EE, 66GKH, 70KAH, 71HS, 127K, 113YH, 144KR, 150AAH, 151AHV, 163TG and 167DG for class I and 4Q, 74RRAE, 71RRA, 98KN, 120N, and 135G, 25FT, 34HE, 41ER, 47EK2, 48LF for class II. Thus, HLAMatchmaker software together with to solid phase techniques could open new horizons for a more precise characterization of the HLA-antibodies.
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Llorente S, Boix F, Eguia J, López M, Bosch A, Martinez H, Gonzalez MJ, López-Hernández R, Salgado G, Moya-Quiles MR, Campillo JA, García-Alonso AM, Minguela A, Jimeno L, Alvarez-López MR, Muro M. C1q-fixing human leukocyte antigen assay in immunized renal patients: correlation between Luminex SAB-C1q and SAB-IgG. Transplant Proc 2013; 44:2535-7. [PMID: 23146446 DOI: 10.1016/j.transproceed.2012.09.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND There is no consensus about the impact of thresholds of complement-fixing antibody assays. Recently, a C1q-SAB assay has been developed to identify complement-fixing HLA antibodies with high sensitivity and specificity. Our aim was to determine the correlation between IgG single antigens beads (SAB) and C1q-SAB assay results among patients on the renal waiting list. PATIENTS AND METHODS Serum samples from immunized renal waiting list patients as well as negative and positive controls were valided by Luminex (LMX). These sera, which were positive for 166 antibody specificities, were tested for HLA class I in parallel by LMX-IgG and LMX-C1q. RESULTS Comparison of antibody detection revealed no correlation based on median fluorescent intensity (MFI), levels between the IgG SAB and the C1qSAB assay (P > .05). IgG-positive sera with MFIs as low as 700 were able to fix C1q, whereas other sera with MFIs as high 14,500 did not. Furthermore, there appeared to be disparities in the profiles of class I antigens able to fix C1q-SAB. In our series, only 34% class I IgG SAB antibodies were also C1qSAB+. In several patients, we detected C1qSAB+ against IgGSAB- that was surely due to IgM antibodies. So, the C1qSAB assay detected IgM antibodies that fix complement. CONCLUSION These data suggested that the C1q-SAB assay could be an important method to evaluate pretransplant virtual crossmatch and to define nonpermitted specificities (C1q-fixing) in kidney transplantation.
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Affiliation(s)
- S Llorente
- Department of Nephrology, University Hospital Virgen Arrixaca, Murcia, Spain
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López-Hernández R, Valdés M, Campillo JA, Martínez-Garcia P, Salama H, Salgado G, Boix F, Moya-Quiles MR, Minguela A, Sánchez-Torres A, Miras M, Garcia A, Carballo F, Álvarez-López MR, Muro M. Genetic polymorphisms of tumour necrosis factor alpha (TNF-α) promoter gene and response to TNF-α inhibitors in Spanish patients with inflammatory bowel disease. Int J Immunogenet 2013; 41:63-8. [PMID: 23590430 DOI: 10.1111/iji.12059] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 02/15/2013] [Accepted: 03/21/2013] [Indexed: 02/06/2023]
Abstract
Tumour necrosis factor alpha (TNF-α) has an important role in inflammatory response. Alterations in the regulation of TNF-α have been implicated in a variety of inflammatory disorders, including Inflammatory bowel disease (IBD). Indeed, a common treatment for IBD is the use of TNF-α inhibitors. Polymorphisms in the TNF-α promoter region are known to affect the level of gene expression. Our aim was to investigate the influence of these single nucleotide polymorphisms (SNPs) in TNF-α promoter gene play in the risk of IBD in a Spanish population and their individual response to anti-TNF-α treatment. DNA samples from patients with IBD and controls were screened for TNF-α -238G/A (rs361525) and -308G/A (rs1800629) SNPs by PCR-SSOP using a microbeads luminex assay and compared with response to TNF-α inhibitors. There were not statistical differences in -238G/A and -308G/A allele and genotype frequencies between patients. However, we found an increased frequency of -308A allele and -308GA genotype in these nonresponders patients to TNF-α inhibitors with respect to responders patients (Pc < 0.05). This -308GA genotype has been classified as high producer of this cytokine. This fact could actually be interesting to explain the different response of patients with IBD with respect to TNF-α inhibitors. TNF-α promoter gene polymorphism does not seem to play a role in IBD susceptibility, but particular TNF-α genotypes may be involved in the different responses to TNF-α inhibitor treatment in Spanish patients with IBD.
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Affiliation(s)
- R López-Hernández
- Immunology Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
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Informe del Taller Ibérico de Histocompatibilidad 2012. Componente de estandarización de resultados de anticuerpos anti-HLA mediante ensayo en fase sólida. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.inmuno.2012.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Picascia A, Infante T, Napoli C. Luminex and antibody detection in kidney transplantation. Clin Exp Nephrol 2012; 16:373-81. [PMID: 22552384 DOI: 10.1007/s10157-012-0635-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
Abstract
Preformed anti-human leukocyte antigen (HLA) antibodies have a negative effect on kidney transplantation outcome with an increased rejection rate and reduction in survival. Posttransplantation production of donor-specific anti-HLA antibodies is indicative of an active immune response and risk of transplantation rejection. For many years the primary technique for anti-HLA antibody detection was complement-dependent cytotoxicity (CDC), which has been integrated by solid-phase assays as HLA antigen-coated bead methods (Luminex). This new technological approach has allowed identification of anti-HLA antibodies, not detectable using conventional CDC method, in patients awaiting kidney transplantation. Moreover, use of Luminex technology has enabled better definition of acceptable or unacceptable antigens favoring transplantation in highly immunized patients. However, there are still many unresolved issues, including the clinical relevance of antibodies detected with this system.
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Affiliation(s)
- Antonietta Picascia
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology, Regional Reference Laboratory of Transplant Immunology, Azienda Universitaria Policlinico, Second University of Naples, Naples, Italy.
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Bosch A, Llorente S, Diaz JA, Salgado G, López M, Boix F, López-Hernández R, González-Soriano MJ, Campillo JA, Moya-Quiles MR, Perez-Lopez N, Minguela A, Jimeno L, Álvarez-López MR, Muro M. Low median fluorescence intensity could be a nonsafety concept of immunologic risk evaluation in patients with shared molecular eplets in kidney transplantation. Hum Immunol 2012; 73:522-5. [DOI: 10.1016/j.humimm.2012.02.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 02/24/2012] [Accepted: 02/27/2012] [Indexed: 10/28/2022]
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