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Evrard R, Manon J, Maistriaux L, Fievé L, Darius T, Cornu O, Lengelé B, Schubert T. Enhancing the biological integration of massive bone allografts: A porcine preclinical in vivo pilot-study. Bone 2024; 187:117213. [PMID: 39084545 DOI: 10.1016/j.bone.2024.117213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 07/02/2024] [Accepted: 07/23/2024] [Indexed: 08/02/2024]
Abstract
Critical bone loss can have several origins: infections, tumors or trauma. Therefore, massive bone allograft can be a solution for limb salvage. Such a biological reconstruction should have the ideal biomechanical qualities. However, their complication rate remains too high. Perfusion-decellularization of massive allografts could promote the vitality of these grafts, thereby improving their integration and bone remodeling. Three perfusion-decellularized massive bone allografts were compared to 3 fresh frozen massive bone allografts in a preclinical in vivo porcine study using an orthopedic surgery model. Three pigs each underwent a critical diaphyseal femoral defects followed by an allogeneic intercalary femoral graft on their both femurs (one decellularized and one conventional fresh frozen as "native") to reconstruct the defect. Clinical imaging was performed over 3 months of follow-up. The grafts were then explanted and examined by non-decalcified histology, fluoroscopic microscopy and immunohistochemistry. Bone consolidation was achieved in both groups at the same time. However, the volume of bone callus appeared to be greater in the decellularized group. Histology demonstrated a superior bone remodeling in the decellularized group, with a higher number of osteoclasts (p < 0.001) and larger areas of osteoid matrix and newly formed bone as compared to the "native" group. Immunohistochemistry showed a superior vitality and remodeling in both the cortical and medullary cavities for osteocalcin (p < 0.001), Ki67 (p < 0.001), CD3 (p < 0.001) and α-SMA (p < 0.001) as compared the "native" group. Three months after implantation, the decellularized grafts were proven to be biologically more active compared to native grafts. Fluoroscopic microscopy revealed more ossification fronts in the depth of the decellularized grafts (p = 0.021). This pilot study provides the first in vivo demonstration on the enhanced biological capacities of massive bone allograft decellularized by perfusion as compared to conventional massive bone allografts.
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Affiliation(s)
- Robin Evrard
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium.
| | - Julie Manon
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium; Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium
| | - Louis Maistriaux
- Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium
| | - Lies Fievé
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium
| | - Tom Darius
- Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Département de Chirurgie, Chirurgie abdominale et unité de transplantation, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium
| | - Olivier Cornu
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium
| | - Benoit Lengelé
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Service de Chirurgie Plastique, Reconstructrice et Esthétique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium
| | - Thomas Schubert
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Avenue E. Mounier, 52-B1.52.04 - 1200, Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-1200, Bruxelles, Belgium
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Nuqali A, Bellumkonda L. Dual organ transplantation: when heart alone is not enough. Curr Opin Organ Transplant 2023; 28:370-375. [PMID: 37582057 DOI: 10.1097/mot.0000000000001093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
PURPOSE OF REVIEW The number of dual organ transplantations (DOT) are steadily increasing over the past few years. This is both a reflection of increasing complexity and advanced disease process in the patients and greater transplant center experience with performing dual organ transplants. Due to lack of standardization of the process, there remains significant center-based variability in patient selection, perioperative and long-term management of these patients. RECENT FINDINGS Overall posttransplant outcomes for DOT have been acceptable with some immunological advantages because of partial tolerance offered by the second organ. These achievements should, however, be balanced with the ethical implications of bypassing the patients who are listed for single organ transplantation because of the preferential allocation of organs for DOT. SUMMARY The field of DOT is expanding rapidly, with good long-term outcomes. There is an urgent need for guidelines to standardize the process of patient selection and listing dual organ transplantation.
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Affiliation(s)
- Abdulelah Nuqali
- Division of Cardiology, Department of Medicine Yale University School of Medicine, New Haven, Connecticut, USA
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Abstract
Long-segment tracheal airway defects may be congenital or result from burns, trauma, iatrogenic intubation damage, or tumor invasion. Although airway defects <6 cm in length may be reconstructed using existing end-to-end reconstructive techniques, defects >6 cm continue to challenge surgeons worldwide. The reconstruction of long-segment tracheal defects has long been a reconstructive dilemma, and these defects are associated with significant morbidity and mortality. Many of these defects are not compatible with life or require a permanent extended-length tracheostomy that is fraught with complications including mucus plugging and tracheoesophageal fistula. Extensive circumferential tracheal defects require a reconstructive technique that provides a rigid structure able to withstand the inspiratory pressures, a structure that will biologically integrate, and contain functional ciliated epithelium to allow for normal mucociliary clearance. Tracheal transplantation has been considered the reconstructive "Holy Grail;" however, there has been a long-held scientific dogma that revascularization of the trachea was not possible. This dogma stifled research to achieve single-staged vascularized tracheal transplantation and prompted the introduction of many creative and inventive alternatives. Throughout history, alloplastic material, nonvascularized allografts, and homografts have been used to address this dilemma. However, these techniques have largely been unsuccessful. The recent introduction of a technique for single-staged vascularized tracheal transplantation may offer a solution to this dilemma and potentially a solution to management of the fatal tracheoesophageal fistula.
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Affiliation(s)
- Eric M Genden
- Department of Otolaryngology-Head and Neck Surgery, Icahn School of Medicine at Mount Sinai, New York, NY
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Rendina M, Barone M, Lillo C, Trapani S, Masiero L, Trerotoli P, Puoti F, Lupo LG, Tandoi F, Agnes S, Grieco A, Andorno E, Marenco S, Giannini EG, Baccarani U, Toniutto P, Carraro A, Colecchia A, Cescon M, Morelli MC, Cillo U, Burra P, Angeli P, Colledan M, Fagiuoli S, De Carlis L, Belli L, De Simone P, Carrai P, Di Benedetto F, De Maria N, Ettorre GM, Giannelli V, Gruttadauria S, Volpes R, Corsale S, Mazzaferro V, Bhoori S, Romagnoli R, Martini S, Rossi G, Caccamo L, Donato MF, Rossi M, Ginanni Corradini S, Spada M, Maggiore G, Tisone G, Lenci I, Vennarecci G, Tortora R, Vivarelli M, Svegliati Baroni G, Zamboni F, Mameli L, Tafuri S, Simone S, Gesualdo L, Cardillo M, Di Leo A. The Italian data on SARS-CoV-2 infection in transplanted patients support an organ specific immune response in liver recipients. Front Immunol 2023; 14:1203854. [PMID: 37469512 PMCID: PMC10352984 DOI: 10.3389/fimmu.2023.1203854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/18/2023] [Indexed: 07/21/2023] Open
Abstract
Introduction The study of immune response to SARSCoV-2 infection in different solid organ transplant settings represents an opportunity for clarifying the interplay between SARS-CoV-2 and the immune system. In our nationwide registry study from Italy, we specifically evaluated, during the first wave pandemic, i.e., in non-vaccinated patients, COVID-19 prevalence of infection, mortality, and lethality in liver transplant recipients (LTRs), using non-liver solid transplant recipients (NL-SOTRs) and the Italian general population (GP) as comparators. Methods Case collection started from February 21 to June 22, 2020, using the data from the National Institute of Health and National Transplant Center, whereas the data analysis was performed on September 30, 2020.To compare the sex- and age-adjusted distribution of infection, mortality, and lethality in LTRs, NL-SOTRs, and Italian GP we applied an indirect standardization method to determine the standardized rate. Results Among the 43,983 Italian SOTRs with a functioning graft, LTRs accounted for 14,168 patients, of whom 89 were SARS-CoV-2 infected. In the 29,815 NL-SOTRs, 361 cases of SARS-CoV-2 infection were observed. The geographical distribution of the disease was highly variable across the different Italian regions. The standardized rate of infection, mortality, and lethality rates in LTRs resulted lower compared to NL-SOTRs [1.02 (95%CI 0.81-1.23) vs. 2.01 (95%CI 1.8-2.2); 1.0 (95%CI 0.5-1.5) vs. 4.5 (95%CI 3.6-5.3); 1.6 (95%CI 0.7-2.4) vs. 2.8 (95%CI 2.2-3.3), respectively] and comparable to the Italian GP. Discussion According to the most recent studies on SOTRs and SARS-CoV-2 infection, our data strongly suggest that, in contrast to what was observed in NL-SOTRs receiving a similar immunosuppressive therapy, LTRs have the same risk of SARS-CoV-2 infection, mortality, and lethality observed in the general population. These results suggest an immune response to SARS-CoV-2 infection in LTRS that is different from NL-SOTRs, probably related to the ability of the grafted liver to induce immunotolerance.
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Affiliation(s)
- Maria Rendina
- Gastroenterology Unit, University Hospital Policlinico of Bari, Bari, Italy
| | - Michele Barone
- Gastroenterology Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari Aldo Moro, Bari, Italy
| | - Chiara Lillo
- Gastroenterology Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari Aldo Moro, Bari, Italy
| | - Silvia Trapani
- Italian National Transplant Center, National Institute of Health, Rome, Italy
| | - Lucia Masiero
- Italian National Transplant Center, National Institute of Health, Rome, Italy
| | - Paolo Trerotoli
- Section of Statistics, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Francesca Puoti
- Italian National Transplant Center, National Institute of Health, Rome, Italy
| | - Luigi Giovanni Lupo
- General Surgery and Liver Transplantation Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari, Bari, Italy
| | - Francesco Tandoi
- General Surgery and Liver Transplantation Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari, Bari, Italy
| | - Salvatore Agnes
- U.O.C. Chirurgia Generale e Trapianti di Organo, Policlinico Gemelli, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Antonio Grieco
- U.O.C. Medicina Interna e del Trapianto di Fegato, Policlinico Gemelli, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Enzo Andorno
- Chirurgia dei Trapianti di Fegato, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | - Simona Marenco
- Gastroenterology Unit, IRCCS Ospedale Policlinico San Martino, University of Genoa, Genoa, Italy
| | | | - Umberto Baccarani
- Centro Trapianto di Fegato, A.O.U.I. Udine, Università degli Studi di Udine, Udine, Italy
| | - Pierluigi Toniutto
- U.S.D. Epatologia e Trapianto di Fegato, A.O.U.I. Udine, Università degli Studi di Udine, Udine, Italy
| | | | - Antonio Colecchia
- Gastroenterology Unit, Department of Medical Specialties, University Hospital of Modena, Modena, Italy
| | - Matteo Cescon
- Chirurgia Epatobiliare e dei Trapianti, IRCCS, A.O.U. di Bologna, University of Bologna, Bologna, Italy
| | - Maria Cristina Morelli
- Internal Medicine Unit for the Treatment of Severe Organ Failure, IRCCS, A.O.U. di Bologna, Bologna, Italy
| | - Umberto Cillo
- Hepatobiliary Surgery and Liver Transplantation, University-Teaching Hospital of Padova, Padova, Italy
| | - Patrizia Burra
- Multivisceral Transplant Unit, University-Teaching Hospital of Padova, Padova, Italy
| | - Paolo Angeli
- Unit of Internal Medicine and Hepatology (UIMH), University-Teaching Hospital of Padova, Padova, Italy
| | - Michele Colledan
- U.O.C. Chirurgia Generale III, Centro Trapianti Fegato, A.S.S.T. Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - Stefano Fagiuoli
- Gastroenterology Hepatology and Transplantation Unit, A.S.S.T. Ospedale Papa Giovanni XXIII, Bergamo, Italy
- Gastroenterologia, Department of Medicine University of Milan Bicocca, Milano, Italy
| | - Luciano De Carlis
- Chirurgia Generale dei Trapianti, Azienda Ospedaliera Niguarda Ca’Granda, University of Milano-Bicocca, Milano, Italy
| | - Luca Belli
- U.O.C. Epatologia e Gastroenterologia, Azienda Ospedaliera Niguarda Ca’Granda, Milano, Italy
| | - Paolo De Simone
- U.O.C. Chirurgia Epatica e Trapianti di Fegato, A.O.U. Pisana, University of Pisa, Pisa, Italy
| | - Paola Carrai
- U.O. Chirurgia Epatica e del Trapianto di Fegato, A.O.U. Pisana, Pisa, Italy
| | - Fabrizio Di Benedetto
- U.O.C. di Chirurgia Oncologica Epatobiliopancreatica e Chirurgia dei Trapianti di Fegato, Azienda Ospedaliera Policlinico, Università di Modena, Modena, Italy
| | - Nicola De Maria
- U.O.C. Chirurgia Generale e Trapianti, Azienda Ospedaliera San Camillo Forlanini, Roma, Italy
| | | | - Valerio Giannelli
- Hepatology Unit, Azienda Ospedaliera San Camillo Forlanini, Roma, Italy
| | | | - Riccardo Volpes
- Unità di Gastroenterologia ed Epatologia, IRCCS-ISMETT-UPMCI, Palermo, Italy
| | - Sveva Corsale
- Unità di Gastroenterologia ed Epatologia, IRCCS-ISMETT-UPMCI, Palermo, Italy
| | - Vincenzo Mazzaferro
- Hepato-pancreatic-biliary surgery and Liver transplantation, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
- Department of Oncology, University of Milan, Milan, Italy
| | - Sherrie Bhoori
- Hepato-pancreatic-biliary surgery and Liver transplantation, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Renato Romagnoli
- Chirurgia Generale 2, Centro Trapianto Fegato A.O.U Città della Salute e della Scienza di Torino, Presidio Molinette, Torino, Italy
| | - Silvia Martini
- Gastroenteroly Unit, A.O.U Città della Salute e della Scienza di Torino, Presidio Molinette, Torino, Italy
| | - Giorgio Rossi
- Division of General and Liver Transplant Surgery, Ospedale Maggiore Policlinico, Milano, Italy
| | - Lucio Caccamo
- Division of General and Liver Transplant Surgery, Ospedale Maggiore Policlinico, Milano, Italy
| | - Maria Francesca Donato
- Division of Gastroenterology and Hepatology, Ospedale Maggiore Policlinico, Milano, Italy
| | - Massimo Rossi
- U.O.C. di Chirurgia Generale e Trapianti di Organo, Policlinico Umberto I, Sapienza Università di Roma, Rome, Italy
| | | | - Marco Spada
- Division of Hepatobiliopancreatic Surgery, Liver and Kidney Transplantation, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Giuseppe Maggiore
- Hepatogastroenterology, Digestive Endoscopy, Nutrition and Liver Transplantation Unit, Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Giuseppe Tisone
- Liver Transplant Unit, A.O.U. Policlinico Tor Vergata, University of Tor Vergata Rome, Rome, Italy
| | - Ilaria Lenci
- Hepatology Unit, A.O.U. Policlinico Tor Vergata, University of Tor Vergata Rome, Rome, Italy
| | - Giovanni Vennarecci
- Hepatobiliary and Liver Tranplantation Surgery, A.O.R.N. “A. CARDARELLI”, Naples, Italy
| | | | - Marco Vivarelli
- Chirurgia Epatobiliare, Pancreatica e dei Trapianti, A.O.U., Ospedali Riuniti, Ancona, Italy
| | | | - Fausto Zamboni
- General and Hepatic Transplantation Surgery Unit, AO.B. G. Brotzu, Cagliari, Italy
| | - Laura Mameli
- General and Hepatic Transplantation Surgery Unit, AO.B. G. Brotzu, Cagliari, Italy
| | - Silvio Tafuri
- Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Bari, Italy
| | - Simona Simone
- Dialysis and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari Aldo Moro, Bari, Italy
| | - Loreto Gesualdo
- Dialysis and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari Aldo Moro, Bari, Italy
| | - Massimo Cardillo
- Italian National Transplant Center, National Institute of Health, Rome, Italy
| | - Alfredo Di Leo
- Gastroenterology Unit, Department of Precision and Regenerative Medicine - Ionian Area-, University of Bari Aldo Moro, Bari, Italy
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Cheng HY, Lin CF, Anggelia MR, Lai PC, Shih LY, Liu SC, Wei FC, Lin CH. Reciprocal Donor-Recipient Strain Combinations Present Different Vascularized Composite Allotransplantation Outcomes in Rodent Models. Plast Reconstr Surg 2023; 151:1220-1231. [PMID: 36508453 DOI: 10.1097/prs.0000000000010099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Although vascularized composite allotransplantation (VCA) has been the focus of many animal studies, further research is needed to determine the potential for a generalized model and immunosuppression regimen that applies across different donor-recipient combinations. In this study, the authors evaluated the outcome of VCAs performed on reciprocal rodent donor-recipient combinations. METHODS VCA was performed in rats using Lewis and Brown Norway (BN) donor-recipient pairs, under the previously reported antilymphocyte serum/cyclosporine/adipose-derived stem cell regimen. Similarly, a published co-stimulatory blockade/rapamycin regimen was performed on the mouse VCA model between Balb/C and C57BL/6 strains. RESULTS To accommodate the active behaviors of BN recipients, the allograft had to be modified and inset to the neck instead of to the groin. The tolerogenic regimen did not provide the same benefits for BN rats as it did for Lewis recipients. Increasing antilymphocyte serum dose and extending the duration of cyclosporine administration from 10 to 21 days significantly prolonged allograft survival and induced donor-specific tolerance. In mice, the co-stimulatory blockade/rapamycin regimen produced inferior VCA outcomes in BALB/c recipients than in C57BL/6 recipients. In both rats and mice, the authors identified an association between the tolerance outcome and the peripheral chimerism measured on postoperative day 30. CONCLUSIONS Reciprocal donor-recipient combinations led to different responses toward the immunosuppression regimen and varied VCA outcomes. Sustained donor chimerism that remained in circulation for 1 month after surgery supported long-term VCA survival. Modification of the model and immunosuppression regimen accordingly is recommended. CLINICAL RELEVANCE STATEMENT Various donor-recipient combinations respond differently to the immunosuppression regimens. Maintaining donor chimerism for 30 days after surgery improves VCA survival. It is recommended to tailor the immunosuppression regimen based on the recipient's background to optimize outcomes.
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Affiliation(s)
- Hui-Yun Cheng
- From the Center for Vascularized Composite Allotransplantation
| | - Chih-Fan Lin
- From the Center for Vascularized Composite Allotransplantation
| | - Madonna Rica Anggelia
- From the Center for Vascularized Composite Allotransplantation
- Department of Plastic and Reconstructive Surgery, Linkou Chang Gung Memorial Hospital
| | - Ping-Chin Lai
- The Kidney Institute and Division of Nephrology, China Medical University Hospital
| | - Ling-Yi Shih
- Department of Plastic and Reconstructive Surgery, Linkou Chang Gung Memorial Hospital
| | - Shiao-Chin Liu
- Department of Plastic and Reconstructive Surgery, Linkou Chang Gung Memorial Hospital
| | - Fu-Chan Wei
- From the Center for Vascularized Composite Allotransplantation
- Department of Plastic and Reconstructive Surgery, Linkou Chang Gung Memorial Hospital
| | - Cheng-Hung Lin
- From the Center for Vascularized Composite Allotransplantation
- Department of Plastic and Reconstructive Surgery, Linkou Chang Gung Memorial Hospital
- Chang Gung Medical College and Chang Gung University
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Cooper JP, Abkowitz JL. How I diagnose and treat acute graft-versus-host disease after solid organ transplantation. Blood 2023; 141:1136-1146. [PMID: 36395067 DOI: 10.1182/blood.2022015954] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022] Open
Abstract
Acute graft-versus-host disease (GVHD) is a rare complication after solid organ transplantation (SOT) that carries high mortality. Caused by immunocompetent donor leukocytes within the transplanted organ, which become activated against recipient tissues, GVHD typically develops 2 to 12 weeks after SOT and can affect the skin, gastrointestinal tract, liver, and bone marrow. Signs and symptoms are nonspecific and include a rash, nausea, appetite loss, diarrhea, and cytopenias. Pancytopenia from marrow-directed GVHD is the primary driver of mortality. The diagnosis of GVHD is often delayed but should be confirmed by biopsy of an affected organ. Evidence of donor chimerism in blood or marrow supports the diagnosis. When GVHD is diagnosed we initiate treatment with systemic corticosteroids. At that time, if GVHD only involves skin or oral mucosa we also decrease maintenance immunosuppression levels to allow the recipient to reject the donor immune cells. For GVHD involving the marrow we initiate an allogeneic hematopoietic cell donor search early. In this article, we describe 3 cases of GVHD after SOT, outline our approach to diagnosis and management, and then provide analysis of the 3 instructive cases.
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Affiliation(s)
- Jason P Cooper
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
| | - Janis L Abkowitz
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA
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Hall BM, Verma ND, Tran GT, Hodgkinson SJ. Transplant Tolerance, Not Only Clonal Deletion. Front Immunol 2022; 13:810798. [PMID: 35529847 PMCID: PMC9069565 DOI: 10.3389/fimmu.2022.810798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 02/23/2022] [Indexed: 11/13/2022] Open
Abstract
The quest to understand how allogeneic transplanted tissue is not rejected and how tolerance is induced led to fundamental concepts in immunology. First, we review the research that led to the Clonal Deletion theory in the late 1950s that has since dominated the field of immunology and transplantation. At that time many basic mechanisms of immune response were unknown, including the role of lymphocytes and T cells in rejection. These original observations are reassessed by considering T regulatory cells that are produced by thymus of neonates to prevent autoimmunity. Second, we review "operational tolerance" induced in adult rodents and larger animals such as pigs. This can occur spontaneously especially with liver allografts, but also can develop after short courses of a variety of rejection inhibiting therapies. Over time these animals develop alloantigen specific tolerance to the graft but retain the capacity to reject third-party grafts. These animals have a "split tolerance" as peripheral lymphocytes from these animals respond to donor alloantigen in graft versus host assays and in mixed lymphocyte cultures, indicating there is no clonal deletion. Investigation of this phenomenon excludes many mechanisms, including anti-donor antibody blocking rejection as well as anti-idiotypic responses mediated by antibody or T cells. This split tolerance is transferred to a second immune-depleted host by T cells that retain the capacity to effect rejection of third-party grafts by the same host. Third, we review research on alloantigen specific inhibitory T cells that led to the first identification of the CD4+CD25+T regulatory cell. The key role of T cell derived cytokines, other than IL-2, in promoting survival and expansion of antigen specific T regulatory cells that mediate transplant tolerance is reviewed. The precise methods for inducing and diagnosing operational tolerance remain to be defined, but antigen specific T regulatory cells are key mediators.
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Affiliation(s)
- Bruce M. Hall
- Immune Tolerance Laboratory, School of Medicine, University of New South Wales (UNSW) Sydney, Ingham Institute, and Renal Service and Multiple Sclerosis Clinic, Liverpool Hospital, Liverpool, NSW, Australia
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Chen JC. Immunological Consequences of In Utero Exposure to Foreign Antigens. Front Immunol 2021; 12:638435. [PMID: 33936052 PMCID: PMC8082100 DOI: 10.3389/fimmu.2021.638435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 03/26/2021] [Indexed: 01/23/2023] Open
Abstract
Immunologic tolerance refers to a state of immune nonreactivity specific to particular antigens as an important issue in the field of transplantation and the management of autoimmune diseases. Tolerance conceptually originated from Owen’s observation of blood cell sharing in twin calves. Owen’s conceptual framework subsequently constituted the backbone of Medawar’s “actively acquired tolerance” as the major tenet of modern immunology. Based upon this knowledge, the delivery of genetically distinct hematopoietic stem cells into pre-immune fetuses represented a novel and unique approach to their engraftment without the requirement of myeloablation or immunosuppression. It might also make fetal recipients commit donor alloantigens to memory of their patterns as “self” so as to create a state of donor-specific tolerance. Over the years, the effort made experimentally or clinically toward in utero marrow transplantation could not reliably yield sufficient hematopoietic chimerism for curing candidate diseases as anticipated, nor did allogeneic graft tolerance universally develop as envisaged by Medawar following in utero exposure to various forms of alloantigens from exosomes, lymphocytes or marrow cells. Enduring graft tolerance was only conditional on a state of significant hematopoietic chimerism conferred by marrow inocula. Notably, fetal exposure to ovalbumin, oncoprotein and microbial antigens did not elicit immune tolerance, but instead triggered an event of sensitization to the antigens inoculated. These fetal immunogenic events might be clinically relevant to prenatal imprinting of atopy, immune surveillance against developmental tumorigenesis, and prenatal immunization against infectious diseases. Briefly, the immunological consequences of fetal exposure to foreign antigens could be tolerogenic or immunogenic, relying upon the type or nature of antigens introduced. Thus, the classical school of “actively acquired tolerance” might oversimplify the interactions between developing fetal immune system and antigens. Such interactions might rely upon fetal macrophages, which showed up earlier than lymphocytes and were competent to phagocytose foreign antigens so as to bridge toward antigen-specific adaptive immunity later on in life. Thus, innate fetal macrophages may be the potential basis for exploring how the immunological outcome of fetal exposure to foreign antigens is determined to improve the likelihood and reliability of manipulating fetal immune system toward tolerization or immunization to antigens.
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Affiliation(s)
- Jeng-Chang Chen
- Department of Surgery, Chang Gung Children's Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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Malone AF, Wu H, Fronick C, Fulton R, Gaut JP, Humphreys BD. Harnessing Expressed Single Nucleotide Variation and Single Cell RNA Sequencing To Define Immune Cell Chimerism in the Rejecting Kidney Transplant. J Am Soc Nephrol 2020; 31:1977-1986. [PMID: 32669324 DOI: 10.1681/asn.2020030326] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/10/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND In solid organ transplantation, donor-derived immune cells are assumed to decline with time after surgery. Whether donor leukocytes persist within kidney transplants or play any role in rejection is unknown, however, in part because of limited techniques for distinguishing recipient from donor cells. METHODS Whole-exome sequencing of donor and recipient DNA and single-cell RNA sequencing (scRNA-seq) of five human kidney transplant biopsy cores distinguished immune cell contributions from both participants. DNA-sequence comparisons used single nucleotide variants (SNVs) identified in the exome sequences across all samples. RESULTS Analysis of expressed SNVs in the scRNA-seq data set distinguished recipient versus donor origin for all 81,139 cells examined. The leukocyte donor/recipient ratio varied with rejection status for macrophages and with time post-transplant for lymphocytes. Recipient macrophages displayed inflammatory activation whereas donor macrophages demonstrated antigen presentation and complement signaling. Recipient-origin T cells expressed cytotoxic and proinflammatory genes consistent with an effector cell phenotype, whereas donor-origin T cells appeared quiescent, expressing oxidative phosphorylation genes. Finally, both donor and recipient T cell clones within the rejecting kidney suggested lymphoid aggregation. The results indicate that donor-origin macrophages and T cells have distinct transcriptional profiles compared with their recipient counterparts, and that donor macrophages can persist for years post-transplantation. CONCLUSIONS Analysis of single nucleotide variants and their expression in single cells provides a powerful novel approach to accurately define leukocyte chimerism in a complex organ such as a transplanted kidney, coupled with the ability to examine transcriptional profiles at single-cell resolution.
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Affiliation(s)
- Andrew F Malone
- Division of Nephrology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - Haojia Wu
- Division of Nephrology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - Catrina Fronick
- McDonnell Genome Institute, Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - Robert Fulton
- McDonnell Genome Institute, Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - Joseph P Gaut
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - Benjamin D Humphreys
- Division of Nephrology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri .,Department of Developmental Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri
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Malfait T, Emonds MP, Daniëls L, Nagler EV, Van Biesen W, Van Laecke S. HLA Class II Antibodies at the Time of Kidney Transplantation and Cardiovascular Outcome: A Retrospective Cohort Study. Transplantation 2020; 104:823-834. [DOI: 10.1097/tp.0000000000002889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Kitamura K, Buchholz BM, Abu-Elmagd K, Kalff JC, Schäfer N, von Websky MW. Chronic rejection after intestinal transplantation: A systematic review of experimental models. Transplant Rev (Orlando) 2019; 33:173-181. [DOI: 10.1016/j.trre.2019.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 01/28/2023]
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Jadlowiec CC, Morgan PE, Nehra AK, Hathcock MA, Kremers WK, Heimbach JK, Wiesner RH, Taner T. Not All Cellular Rejections Are the Same: Differences in Early and Late Hepatic Allograft Rejection. Liver Transpl 2019; 25:425-435. [PMID: 30615251 DOI: 10.1002/lt.25411] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/19/2018] [Indexed: 12/13/2022]
Abstract
T cell-mediated rejection (TCMR) is common after liver transplantation (LT), and it is often thought to have a minimum impact on outcomes. Because alloimmune response changes over time, we investigated the role of the timing of TCMR on patient and allograft survival and examined the risk factors for early and late TCMR. We reviewed protocol liver biopsies for 787 consecutive LT recipients with an 8.6-year follow-up. The incidence of early TCMR (≤6 weeks after LT) was 33.5% with nonalcoholic steatohepatitis patients having the lowest incidence. Younger recipient age (P < 0.01), number of human leukocyte antigen mismatches (P < 0.01), and use of deceased donor allografts (P = 0.01) were associated with increased risk of early TCMR, which had no impact on allograft (hazard ratio [HR], 1.02; 95% CI, 0.79-1.32; P = 0.89) or overall survival (HR, 1.03; 95% CI, 0.78-1.34; P = 0.86). Late TCMR (>6 weeks after LT) was less common (17.7%) and was associated with different risk factors. The majority of late TCMR (56.2%) episodes had no antecedent early TCMR, although moderate-to-severe early TCMR (HR, 2.85; 95% CI, 1.55-5.23; P < 0.01) and steroid resistance (HR, 3.62; 95% CI, 1.87-6.99; P < 0.01) were associated with late TCMR. Late TCMR increased risk of mortality (HR, 1.89; 95% CI, 1.35-2.65; P = 0.001) and graft loss (HR, 1.71; 95% CI, 1.23-2.37; P = 0.001). Thus, these data suggest that the timing and histologic grade of TCMR determine its impact on patient and allograft survival. Early mild TCMR episodes after LT do not adversely impact patient or allograft survival provided that they are adequately treated. The occurrence of late TCMR carries deleterious effects with increased longterm risk of graft loss and decreased survival. Patients with moderate-to-severe early TCMR are at an increased risk for late TCMR and warrant closer clinical follow-up.
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Affiliation(s)
| | - Paige E Morgan
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Avinash K Nehra
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Matthew A Hathcock
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Walter K Kremers
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Julie K Heimbach
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Russell H Wiesner
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
| | - Timucin Taner
- William J. von Liebig Center for Transplantation, Mayo Clinic, Rochester, MN
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Chen J, Zhang D, Zhang T, Chen C, Song Y, Liu S, Su Y, Guo S. Effect of the vascularized bone components on the survival of vascularized composite allografts. J Surg Res 2018; 224:132-138. [DOI: 10.1016/j.jss.2017.03.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/27/2017] [Accepted: 03/29/2017] [Indexed: 11/15/2022]
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Chen JC, Chan CC, Wu CJ, Ou LS, Yu HY, Chang HL, Tseng LY, Kuo ML. Fetal Phagocytes Take up Allergens to Initiate T-Helper Cell Type 2 Immunity and Facilitate Allergic Airway Responses. Am J Respir Crit Care Med 2017; 194:934-947. [PMID: 27064309 DOI: 10.1164/rccm.201508-1703oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
RATIONALE Actively acquired tolerance occurs when foreign antigens come into contact with the immature fetal immune system. OBJECTIVES Armed with the knowledge of actively acquired tolerance, we attempted to prenatally abolish or diminish allergic responses. METHODS In utero injection of adjuvant-free ovalbumin (OVA) was conducted in Gestational Day 14 FVB/N mouse fetuses. Postnatally, mice were evaluated for their resistance to intraperitoneal OVA sensitization and oral or aerosolized OVA challenge, and then they were examined for humoral and cellular immunological profiles, airway hyperresponsiveness to bronchospastic stimuli, and lung histology. Fluorescent conjugates of OVA were used for further studies of mechanisms. MEASUREMENTS AND MAIN RESULTS This presumed tolerogenic action turned out to be a sensitization process with the development of anaphylaxis or heightened recall, T-helper cell type 2-skewed responses to postnatal encounter with OVA. Further postnatal aerosolized OVA stress triggered allergic lungs with functional and structural alterations of airways. The unintended consequence resulted from macrophage-like fetal phagocytes that took up OVA and differentiated toward dendritic cells. These fetal dendritic cell progenitors attenuated proteolysis of endocytosed OVA for delayed presentation in postnatal life. This specialty of fetal phagocytes effectively retains the memory of antigens internalized early before full development of the immune system, leading to an event of in utero sensitization. CONCLUSIONS Our results have mechanical implications for prenatal imprinting of atopy and shed light on the importance of fetal phagocytes in shaping the developing immune system and initiating allergic airway diseases.
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Affiliation(s)
- Jeng-Chang Chen
- 1 Department of Surgery.,2 Graduate Institute of Clinical Medical Sciences and
| | - Cheng-Chi Chan
- 3 Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; and
| | - Chia-Jen Wu
- 3 Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; and
| | - Liang-Shiou Ou
- 4 Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, and
| | - Hsiu-Yueh Yu
- 5 Pediatric Research Center, Chang Gung Children's Hospital, Taoyuan, Taiwan
| | - Hsueh-Ling Chang
- 5 Pediatric Research Center, Chang Gung Children's Hospital, Taoyuan, Taiwan
| | - Li-Yun Tseng
- 5 Pediatric Research Center, Chang Gung Children's Hospital, Taoyuan, Taiwan
| | - Ming-Ling Kuo
- 4 Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, and.,3 Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; and.,6 Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Mohr Gregoriussen AM, Bohr HG. A Novel Model on DST-Induced Transplantation Tolerance by the Transfer of Self-Specific Donor tTregs to a Haplotype-Matched Organ Recipient. Front Immunol 2017; 8:9. [PMID: 28270810 PMCID: PMC5319400 DOI: 10.3389/fimmu.2017.00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 01/04/2017] [Indexed: 12/27/2022] Open
Abstract
Donor-specific blood transfusion (DST) can lead to significant prolongation of allograft survival in experimental animal models and sometimes human recipients of solid organs. The mechanisms responsible for the beneficial effect on graft survival have been a topic of research and debate for decades and are not yet fully elucidated. Once we discover how the details of the mechanisms involved are linked, we could be within reach of a procedure making it possible to establish donor-specific tolerance with minimal or no immunosuppressive medication. Today, it is well established that CD4+Foxp3+ regulatory T cells (Tregs) are indispensable for maintaining immunological self-tolerance. A large number of animal studies have also shown that Tregs are essential for establishing and maintaining transplantation tolerance. In this paper, we present a hypothesis of one H2-haplotype-matched DST-induced transplantation tolerance (in mice). The formulated hypothesis is based on a re-interpretation of data from an immunogenetic experiment published by Niimi and colleagues in 2000. It is of importance that the naïve recipient mice in this study were never immunosuppressed and were therefore fully immune competent during the course of tolerance induction. Based on the immunological status of the recipients, we suggest that one H2-haplotype-matched self-specific Tregs derived from the transfusion blood can be activated and multiply in the host by binding to antigen-presenting cells presenting allopeptides in their major histocompatibility complex (MHC) class II (MHC-II). We also suggest that the endothelial and epithelial cells within the solid organ allograft upregulate the expression of MHC-II and attract the expanded Treg population to suppress inflammation within the graft. We further suggest that this biological process, here termed MHC-II recruitment, is a vital survival mechanism for organs (or the organism in general) when attacked by an immune system.
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Affiliation(s)
| | - Henrik Georg Bohr
- Department of Chemistry, The Technical University of Denmark , Lyngby , Denmark
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Bone marrow chimerism as a strategy to produce tolerance in solid organ allotransplantation. Curr Opin Organ Transplant 2016; 21:595-602. [PMID: 27805947 DOI: 10.1097/mot.0000000000000366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PURPOSE OF REVIEW Clinical transplant tolerance has been most successfully achieved combining hematopoietic chimerism with kidney transplantation. This review outlines this strategy in animal models and human transplantation, and possible clinical challenges. RECENT FINDINGS Kidney transplant tolerance has been achieved through chimerism in several centers beginning with Massachusetts General Hospital's success with mixed chimerism in human leukocyte antigen (HLA)-mismatched patients and the Stanford group with HLA-matched patients, and the more recent success of the Northwestern protocol achieving full chimerism. This has challenged the original view that stable mixed chimerism is necessary for organ graft tolerance. However, among the HLA-mismatched kidney transplant-tolerant patients, loss of mixed chimerism does not lead to renal-graft rejection, and the development of host Foxp3+ regulatory T cells has been observed. Recent animal models suggest that graft tolerance through bone marrow chimerism occurs through both clonal deletion and regulatory immune cells. Further, Tregs have been shown to improve chimerism in animal models. SUMMARY Animal studies continue to suggest ways to improve our current clinical strategies. Advances in chimerism protocols suggest that tolerance may be clinically achievable with relative safety for HLA-mismatched kidney transplants.
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Mavrommatis B, Baudino L, Levy P, Merkenschlager J, Eksmond U, Donnarumma T, Young G, Stoye J, Kassiotis G. Dichotomy between T Cell and B Cell Tolerance to Neonatal Retroviral Infection Permits T Cell Therapy. THE JOURNAL OF IMMUNOLOGY 2016; 197:3628-3638. [PMID: 27647833 PMCID: PMC5073355 DOI: 10.4049/jimmunol.1600734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 08/05/2016] [Indexed: 11/23/2022]
Abstract
Elucidation of the immune requirements for control or elimination of retroviral infection remains an important aim. We studied the induction of adaptive immunity to neonatal infection with a murine retrovirus, under conditions leading to immunological tolerance. We found that the absence of either maternal or offspring adaptive immunity permitted efficient vertical transmission of the retrovirus. Maternal immunodeficiency allowed the retrovirus to induce central Th cell tolerance in the infected offspring. In turn, this compromised the offspring’s ability to mount a protective Th cell–dependent B cell response. However, in contrast to T cells, offspring B cells were not centrally tolerized and retained their ability to respond to the infection when provided with T cell help. Thus, escape of retrovirus-specific B cells from deletional tolerance offers the opportunity to induce protective retroviral immunity by restoration of retrovirus-specific T cell help, suggesting similar T cell immunotherapies for persistent viral infections.
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Affiliation(s)
- Bettina Mavrommatis
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - Lucie Baudino
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - Prisca Levy
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - Julia Merkenschlager
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - Urszula Eksmond
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - Tiziano Donnarumma
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom
| | - George Young
- Retrovirus-Host Interactions, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom; and
| | - Jonathan Stoye
- Retrovirus-Host Interactions, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom; and.,Department of Medicine, Faculty of Medicine, Imperial College London, London SW7 2AZ, United Kingdom
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, Mill Hill Laboratory, London NW7 1AA, United Kingdom; .,Department of Medicine, Faculty of Medicine, Imperial College London, London SW7 2AZ, United Kingdom
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Lu L, Zhang G, Li R, Zhao Z, Li W, Liu T, Fu W. Molecular Chimeric Recipient Precursor T Cells Promote Cardiac Allograft Survival in Mice. Transplant Proc 2015; 47:2978-84. [PMID: 26707325 DOI: 10.1016/j.transproceed.2015.09.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 08/31/2015] [Accepted: 09/17/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Molecular chimerism has become a potential method to induce donor-specific transplant tolerance. We researched the prolongation of cardiac allograft survival by recipient mouse molecular chimeric precursor T cells (pre-T cells) or hematopoietic stem cells (HSCs) infusion in vivo. METHODS The donor C57BL/6 mouse MHC-I gene (H-2K(b) and H-2D(b) gene) were amplified by RT-PCR. The identified recipient BALB/c mouse pre-T cells and HSCs were transduced by the pMSCVneo retroviral vector of C57BL/6 mouse MHC-I gene (pMSCVneo-H-2D(b)/H-2K(b)). Then the molecular chimeric cells were transfused back to the BALB/c mice. Allogeneic T-lymphocyte proliferation was assessed in mixed lymphocyte reactions (MLR). A mouse model of heterotopic abdominal heart transplantation was performed to evaluate survival times and histological grade of acute rejection at 7 days after transplantation. RESULTS BALB/c mice molecular chimeric pre-T cells and HSCs were cultured successfully after pMSCV-H-2D(b)/H-2K(b) transduction. After the molecular chimeric pre-T cell treatment, the result of MLR showed that the stimulating index of allogeneic T lymphocyte had a statistically significant decrease, which also exhibited a significant reduction after molecular chimeric HSC treatment. The survival time of cardiac allograft was prolonged after chimeric pre-T cell or HSC infusion; meanwhile, pathologic rejection grade decreased significantly. Nevertheless, molecular chimeric pre-T cells exhibited a longer median survival time. CONCLUSION The molecular chimeric recipient mouse pre-T cell or HSC infusion reduced spleen T cells' response to allogeneic T cells in vitro and delayed cardiac allograft rejection in vivo. Pre-T cells have more advantages than HSCs on the prolongation of mouse cardiac allograft survival.
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Affiliation(s)
- L Lu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - G Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - R Li
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Z Zhao
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - W Li
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - T Liu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - W Fu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China.
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Methyl-Guanine-Methyl-Transferase Transgenic Bone Marrow Transplantation Allows N,N-bis(2-chloroethyl)-Nitrosourea Driven Donor Mixed-Chimerism Without Graft-Versus-Host Disease, and With Donor-Specific Allograft Tolerance. Transplantation 2015; 99:2476-84. [PMID: 26177088 DOI: 10.1097/tp.0000000000000825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Transplant tolerance has been achieved by mixed chimerism in animal models and in a limited number of kidney transplant patients. However, these mixed-chimerism strategies were limited either by loss of long-term mixed chimerism or risk of graft-versus-host disease (GVHD). Selective bone marrow (BM) engraftment using marrow protective strategies are currently reaching clinical use. In this study, we tested the utility of methyl-guanine-methyl-transferase (MGMT)-transgenic-C57BL/6 BM into a major histocompatibility complex mismatched-BALB/c model followed by N,N-bis(2-chloroethyl)-nitrosourea (BCNU) treatment to enhance donor-cell engraftment and then evaluated transplant tolerance induction. METHODS A single-dose of anti-CD8 antibody and busulfan was administered into BALB/c-host-mice at day 1. The BALB/c-mice also received costimulatory blockade through multiple-doses of anti-CD40L antibody. 10 × 10(6) BM-cells from MGMT-transgenic-mice were transplanted into host BALB/c mice at day 0. The BCNU was administered at 4 time points after BM transplantation (BMT). Heterotopic donor C57BL/6 cardiac allografts were performed at day 243 after BMT. Skin transplantation with third-party CBA, host BALB/c and donor C57BL/6 grafts was performed at day 358 after BMT. RESULTS The BALB/c-mice showed long-term stable and high-level donor-cell engraftment with MGMT transgenic C57BL/6 BMT after BCNU treatment, demonstrating full reconstitution and donor cardiac-allograft tolerance and no GVHD with expanded donor and host Foxp3 T regulatory cells. Further, skin grafts from donor, host, and third party showed good immune function with rejection of third-party grafts from all mice and benefit from enhanced chimerism after BCNU with less cell infiltrate and no chronic rejection in the donor skin grafts of BCNU treated mice compared no BCNU treated mice. CONCLUSIONS High-level mixed chimerism without GVHD can be achieved using MGMT transgenic BM in a mixed-chimerism model receiving BCNU across a major histocompatibility complex mismatch. Enhanced mixed chimerism leads to long-term donor-specific allograft tolerance.
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Starzl TE. Anthony Cerami Award in Translational Medicine: A Journey in Science: The Birth of Organ Transplantation with Particular Reference to Alloengraftment Mechanisms. Mol Med 2015; 21:227-32. [PMID: 26197024 PMCID: PMC4503646 DOI: 10.2119/molmed.2014.00254] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 12/16/2014] [Indexed: 11/06/2022] Open
Affiliation(s)
- Thomas E Starzl
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
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21
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In Vivo Chimera Model: Creation of Primary and Secondary Chimera. Plast Reconstr Surg 2015. [DOI: 10.1007/978-1-4471-6335-0_71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Li X, Zhuang S. Recent advances in renal interstitial fibrosis and tubular atrophy after kidney transplantation. FIBROGENESIS & TISSUE REPAIR 2014; 7:15. [PMID: 25285155 PMCID: PMC4185272 DOI: 10.1186/1755-1536-7-15] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 08/29/2014] [Indexed: 01/05/2023]
Abstract
Although kidney transplantation has been an important means for the treatment of patients with end stage of renal disease, the long-term survival rate of the renal allograft remains a challenge. The cause of late renal allograft loss, once known as chronic allograft nephropathy, has been renamed “interstitial fibrosis and tubular atrophy” (IF/TA) to reflect the histologic pattern seen on biopsy. The mechanisms leading to IF/TA in the transplanted kidney include inflammation, activation of renal fibroblasts, and deposition of extracellular matrix proteins. Identifying the mediators and factors that trigger IF/TA may be useful in early diagnosis and development of novel therapeutic strategies for improving long-term renal allograft survival and patient outcomes. In this review, we highlight the recent advances in our understanding of IF/TA from three aspects: pathogenesis, diagnosis, and treatment.
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Affiliation(s)
- Xiaojun Li
- Department of Nephrology, Tongji University School of Medicine, Shanghai East Hospital, Shanghai, China
| | - Shougang Zhuang
- Department of Nephrology, Tongji University School of Medicine, Shanghai East Hospital, Shanghai, China ; Department of Medicine, Alpert Medical School of Brown University, Rhode Island Hospital, Middle House 301, 593 Eddy Street, Providence, RI 02903, USA
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Immunology of Transplant Protocols. CURRENT OTORHINOLARYNGOLOGY REPORTS 2014. [DOI: 10.1007/s40136-014-0057-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Comparative sensitivity analyses of quantitative polymerase chain reaction and flow cytometry in detecting cellular microchimerism in murine tissues. J Immunol Methods 2014; 406:74-82. [PMID: 24657636 DOI: 10.1016/j.jim.2014.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 01/30/2014] [Accepted: 03/11/2014] [Indexed: 11/23/2022]
Abstract
Cellular microchimerism is defined as the presence of small populations of cells from one individual in another genetically distinct individual. The pivotal role of cellular microchimerism in a variety of immune settings is increasingly recognized, e.g. in context of pregnancy, transplantation and cancer. However, the detection of chimeric cells is overshadowed by technical limitations. This study aimed to overcome these limitations by testing the sensitivity and detection limit of a molecular biology approach (quantitative polymerase chain reaction, qPCR) and a cellular approach (flow cytometry) in order to identify experimentally induced cellular microchimerism in mice. Leukocytes isolated from lymph nodes or spleens of transgenic enhanced green fluorescent protein (eGFP) and CD45.1 mice respectively were used as targets to be detected as microchimeric cells among wild type (wt) or haploidentical cells. The detection limit of microchimeric cells by flow cytometry was 0.05% or lower for the respective eGFP(+) or CD45.1(+) cell subsets, which equals 48 cells or fewer per 1×10(5) wt cells. The detection limit of CD45.1(+) and CD45.2(+) cells among haploidentical CD45.1(+)2(+) cells by flow cytometry was 48 cells (0.05%) and 198 cells (0.2%), respectively. Using qPCR, a detection limit of 198 eGFP(+) cells per 1×10(5) wt cells, respective 0.2%, could be achieved. We here introduce two technical approaches to reliably detect low number of chimeric cells at a low detection limit and high sensitivity in transgenic mouse systems.
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Abstract
Complex multiorgan failure may require simultaneous transplantation of several organs, including heart-lung, kidney-pancreas, or multivisceral transplantation. Solid organ transplantation can also be combined with hematopoietic stem cell transplantation to modulate immunologic response to a solid organ allograft. Combined multiorgan transplantation may offer a lower rate of allograft rejection and lower immunosuppression needs. In recent years, intestinal and multivisceral transplantations became viable as a rescue treatment for patients with irreversible intestinal failure who can no longer tolerate total parenteral nutrition with 70% survival after 5 years which is comparable to other types of solid organ allografts. Post-transplant neurologic complications were reported in up to 86% of allograft recipients and greatly overlap in intestinal and multivisceral allograft recipients, without a significant effect on the outcome of transplantation. Other common organ combinations in multiorgan transplantation include kidney-pancreas, which is mostly used for patients with renal failure and uncontrolled diabetes, and heart-lung for patients with congenital heart disease and idiopathic pulmonary arterial hypertension. Kidney-pancreas transplantation frequently results in an improvement of diabetic complications, including diabetic neuropathy. Heart-lung allograft recipients have very similar clinical course and spectrum of neurologic complications to lung transplant recipients. At this time there are no reports of an increased risk of graft-versus-host disease with combined transplantation of solid organ allograft and hematopoietic stem cells. Chronic immunosuppression and complex toxic-metabolic disturbances after multiorgan transplantation create a permissive environment for development of a wide spectrum of neurologic complications which largely resemble complications after transplantations of individual components of complex multiorgan allografts.
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Affiliation(s)
- Saša A Zivković
- Neurology Service, Department of Veterans Affairs and Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Meier D, Rumbo M, Gondolesi GE. Current Status of Allograft Tolerance in Intestinal Transplantation. Int Rev Immunol 2013; 33:245-60. [DOI: 10.3109/08830185.2013.829468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Wu SL, Pan CE. Tolerance and chimerism and allogeneic bone marrow/stem cell transplantation in liver transplantation. World J Gastroenterol 2013; 19:5981-7. [PMID: 24106398 PMCID: PMC3785619 DOI: 10.3748/wjg.v19.i36.5981] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/05/2013] [Accepted: 07/18/2013] [Indexed: 02/06/2023] Open
Abstract
The liver has particular tolerogenic properties that allow its spontaneous acceptance in some animal species. Liver structure is considered to favor a tolerogenic environment. The peripheral tolerance mechanisms also play a role in spontaneous tolerance to liver graft. In a clinical setting, the main challenge nowadays facing liver transplantation is minimization of immunosuppression with the goal of donor-specific tolerance. Mechanisms involved in tolerance to transplanted organs are complex and partly unknown. A significant mechanism in tolerance induction is chimerism. Chimerism can be induced through transplantation of allogeneic donor bone marrow/stem cells under appropriate host conditioning. This review focuses on the tolerance mechanisms in liver transplantation and highlights the role of chimerism and allogeneic bone marrow/stem cell transplantation in tolerance development.
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Benagiano G, Landeweerd L, Brosens I. Medical and ethical considerations in uterus transplantation. Int J Gynaecol Obstet 2013; 123:173-7. [DOI: 10.1016/j.ijgo.2013.05.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 04/30/2013] [Accepted: 07/24/2013] [Indexed: 12/17/2022]
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Rowntree LC, Bayliss J, Nguyen THO, Kotsimbos TC, Mifsud NA. Human leucocyte antigen-defined microchimerism early post-transplant does not predict for stable lung allograft function. Clin Exp Immunol 2013; 172:483-9. [PMID: 23600837 DOI: 10.1111/cei.12075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2013] [Indexed: 11/28/2022] Open
Abstract
Microchimerism is the presence of foreign cells in an individual below 1% of total cells, which can occur in the setting of solid organ transplantation. This study quantitated donor-derived cellular subsets longitudinally in human leucocyte antigen (HLA)-mismatched lung transplant recipients (LTR) during the first post-operative year and evaluated the pattern of peripheral microchimerism with clinical outcomes. Peripheral blood mononuclear cells (PBMC) isolated from non-HLA-B44 LTR who received HLA-B44 allografts were sorted flow cytometrically into three cellular subsets. Real-time quantitative polymerase chain reaction (q-PCR) demonstrated that donor-derived HLA-B44 microchimerism is a common phenomenon, observed in 61% of patients. The level of donor-derived cells varied across time and between LTR with frequencies of 38% in the B cells/monocytes subset, 56% in the T/NK cells subset and 11% in the dendritic cells (DC) subset. Observations highlighted that microchimerism was not necessarily associated with favourable clinical outcomes in the first year post-lung transplantation.
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Affiliation(s)
- L C Rowntree
- Department of Medicine, Monash University, Central Clinical School, Melbourne, Vic., Australia
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Solgi G, Gadi V, Paul B, Mytilineos J, Pourmand G, Mehrsai A, Ranjbar M, Mohammadnia M, Nikbin B, Amirzargar AA. Five-year clinical effects of donor bone marrow cells infusions in kidney allograft recipients: improved graft function and higher graft survival. CHIMERISM 2013; 4:87-94. [PMID: 23639966 DOI: 10.4161/chim.24719] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Augmentation of microchimerism in solid organ transplant recipients by donor bone marrow cells (DBMC) infusion may promote immune hyporesponsiveness and consequently improve long-term allograft survival. Between March 2005 and July 2007, outcomes for 20 living unrelated donor (LURD) primary kidney recipients with concurrent DBMC infusion (an average of 2.19 ± 1.13 x 10⁹ donor cells consisting of 2.66 ± 1.70 x 10⁷ CD34⁺ cells) were prospectively compared with 20 non-infused control allograft recipients given similar conventional immunosuppressive regimens. With five years of clinical follow up, a total of 11 cases experienced rejection episodes (3 DBMI patients vs. 8 controls, p = 0.15). One DBMC-infused patient experienced chronic rejection vs. two episodes (1 biopsy-confirmed) in the control patients. Actuarial and death-censored 5-y graft survival was significantly higher in infused patients compared with controls (p = 0.01 and p = 0.03, respectively). Long-term graft survival was significantly associated with pre-transplant anti-HLA antibodies (p = 0.01), slightly with peripheral microchimerism (p = 0.09) and CD4⁺CD25⁺FoxP3⁺ T cells (p = 0.09). Immunosuppressant dosing was lower in infused patients than controls, particularly for mycophenolate mofetil (p = 0.001). The current findings as well as our previous reports on these patients indicates clinical improvement in long-term graft survival of renal transplant patients resulting from low-dose DBMC infusion given without induction therapy.
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Affiliation(s)
- Ghasem Solgi
- Immunology Department; School of Medicine; Hamadan University of Medical Sciences; Hamadan, Iran
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Hurst J. A modern Cosmas and Damian: Sir Roy Calne and Thomas Starzl receive the 2012 Lasker~Debakey Clinical Medical Research Award. J Clin Invest 2013. [PMID: 23193576 DOI: 10.1172/jci66465] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Solgi G, Mytilineos J, Gadi V, Paul B, Pourmand G, Mehrsai A, Nikbin B, Amirzargar AA. Donor-derived peripheral mononuclear cell DNA is associated with stable kidney allograft function: a randomized controlled trial. CHIMERISM 2013; 2:102-10. [PMID: 22509426 DOI: 10.4161/chim.2.4.19095] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A large body of literature has documented an inconsistent relationship of peripheral donor cell chimerism with alloimmune tolerance following kidney transplantation. We revisit this association with assays capable of quantifying cellular microchimerism with 150-1500-fold greater sensitivity than previously utilized allo-antibody based flow cytometric approaches. Forty renal transplant patients, 20 with concurrent donor bone marrow infusion (DBMI) and 20 control participants without infusion were prospectively monitored for peripheral blood microchimerism using donor polymorphism-specific quantitative real-time PCR. Thirty-eight patients were evaluated for microchimerism, 19 in each group. The frequency of testing positive for (95% vs. 58%, p = 0.02) and mean concentrations of microchimerism (115 ± 66 vs. 13 ± 3 donor genomes/million recipient genomes, p = 0.007), respectively, were higher in infused patients compared with controls. Thirty-one patients maintained stable graft function; 17 in the DBMI group vs. 14 in controls. Patients with stable graft function in the DBMI group compared with control patients harbored microchimerism more frequently (94 vs. 50%, p = 0.01) and at higher concentrations (123 ± 67 vs. 11 ± 4, p = 0.007), respectively. Significant correlation between dose of infused cells and microchimerism levels was found post-transplant (p = 0.01). Using very sensitive assays, our findings demonstrate associations between the presence and quantity of microchimerism with stable graft function in infused patients.
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Affiliation(s)
- Ghasem Solgi
- Immunology Department, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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Yee ML, Tan HH, Sia WJ, Yau WP. Influences of Donor and Recipient Gene Polymorphisms on Tacrolimus Dosing and Pharmacokinetics in Asian Liver Transplant Patients. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojots.2013.33011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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What is so special about thinking; after all, we all do it! Exp Mol Pathol 2012; 93:354-64. [DOI: 10.1016/j.yexmp.2012.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 08/17/2012] [Indexed: 12/24/2022]
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Ravindra KV, Xu H, Bozulic LD, Song DD, Ildstad ST. The need for inducing tolerance in vascularized composite allotransplantation. Clin Dev Immunol 2012; 2012:438078. [PMID: 23251216 PMCID: PMC3509522 DOI: 10.1155/2012/438078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 09/14/2012] [Indexed: 11/24/2022]
Abstract
Successful hand and face transplantation in the last decade has firmly established the field of vascularized composite allotransplantation (VCA). The experience in VCA has thus far been very similar to solid organ transplantation in terms of the morbidity associated with long-term immunosuppression. The unique immunological features of VCA such as split tolerance and resistance to chronic rejection are being investigated. Simultaneously there has been laboratory work studying tolerogenic protocols in animal VCA models. In order to optimize VCA outcomes, translational studies are needed to develop less toxic immunosuppression and possibly achieve donor-specific tolerance. This article reviews the immunology, animal models, mixed chimerism & tolerance induction in VCA and the direction of future research to enable better understanding and wider application of VCA.
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Affiliation(s)
- Kadiyala V. Ravindra
- Department of Surgery, Duke University Medical Center (DUMC) 3512, Durham, NC 27710, USA
| | - Hong Xu
- Institute for Cellular Therapeutics and Jewish Hospital, University of Louisville, 570 South Preston Street, Suite 404, Louisville, KY 40202-1760, USA
| | - Larry D. Bozulic
- Institute for Cellular Therapeutics and Jewish Hospital, University of Louisville, 570 South Preston Street, Suite 404, Louisville, KY 40202-1760, USA
| | - David D. Song
- Institute for Cellular Therapeutics and Jewish Hospital, University of Louisville, 570 South Preston Street, Suite 404, Louisville, KY 40202-1760, USA
| | - Suzanne T. Ildstad
- Institute for Cellular Therapeutics and Jewish Hospital, University of Louisville, 570 South Preston Street, Suite 404, Louisville, KY 40202-1760, USA
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Albano L, Rak JM, Azzouz DF, Cassuto-Viguier E, Gugenheim J, Lambert NC. Male microchimerism at high levels in peripheral blood mononuclear cells from women with end stage renal disease before kidney transplantation. PLoS One 2012; 7:e32248. [PMID: 22403639 PMCID: PMC3293902 DOI: 10.1371/journal.pone.0032248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/24/2012] [Indexed: 11/19/2022] Open
Abstract
Patients with end stage renal diseases (ESRD) are generally tested for donor chimerism after kidney transplantation for tolerance mechanism purposes. But, to our knowledge, no data are available on natural and/or iatrogenic microchimerism (Mc), deriving from pregnancy and/or blood transfusion, acquired prior to transplantation. In this context, we tested the prevalence of male Mc using a real time PCR assay for DYS14, a Y-chromosome specific sequence, in peripheral blood mononuclear cells (PBMC) from 55 women with ESRD, prior to their first kidney transplantation, and compared them with results from 82 healthy women. Male Mc was also quantified in 5 native kidney biopsies obtained two to four years prior to blood testing and in PBMC from 8 women collected after female kidney transplantation, several years after the initial blood testing. Women with ESRD showed statistically higher frequencies (62%) and quantities (98 genome equivalent cells per million of host cells, gEq/M) of male Mc in their PBMC than healthy women (16% and 0.3 gEq/M, p<0.00001 and p = 0.0005 respectively). Male Mc was increased in women with ESRD whether they had or not a history of male pregnancy and/or of blood transfusion. Three out of five renal biopsies obtained a few years prior to the blood test also contained Mc, but no correlation could be established between earlier Mc in a kidney and later presence in PBMC. Finally, several years after female kidney transplantation, male Mc was totally cleared from PBMC in all women tested but one. This intriguing and striking initial result of natural and iatrogenic male Mc persistence in peripheral blood from women with ESRD raises several hypotheses for the possible role of these cells in renal diseases. Further studies are needed to elucidate mechanisms of recruitment and persistence of Mc in women with ESRD.
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Affiliation(s)
- Laetitia Albano
- UMC Transplantation Rénale, Hôpital Pasteur, Centre Hospitalo-Universitaire de Nice, Nice, France
| | - Justyna M. Rak
- INSERM UMR1097, Parc Scientifique de Luminy, Marseille, France
| | - Doua F. Azzouz
- INSERM UMR1097, Parc Scientifique de Luminy, Marseille, France
| | | | - Jean Gugenheim
- Service de Chirurgie et Transplantation Hépatique, Hôpital l'Archet 2, Nice, France
- Université de Nice Sophia Antipolis, Nice, France
- INSERM U526, IFR 50, Faculté de Médecine, Université de Nice Sophia Antipolis, Nice, France
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Hoerning A, Kalkavan H, Rehme C, Menke J, Worm K, Garritsen HSP, Büscher R, Hoyer PF. Quantitative real-time ARMS-qPCR for mitochondrial DNA enables accurate detection of microchimerism in renal transplant recipients. Pediatr Transplant 2011; 15:809-18. [PMID: 21967552 DOI: 10.1111/j.1399-3046.2011.01581.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The presence of microchimerism in peripheral blood of solid organ transplant recipients has been postulated to be beneficial for allograft acceptance. Kinetics of donor cell trafficking and accumulation in pediatric allograft recipients are largely unknown. In this study, we implemented SNPs of the HVRs I and II of mitochondrial DNA to serve as molecular genetic markers to detect donor-specific cell chimerism after pediatric renal transplantation. Serial dilution of artificial chimeric DNA samples showed a linear correlation coefficient of R > 0.98 and a detection sensitivity of 0.01% with high reproducibility. Longitudinal semiquantitative analysis of donor-specific SNPs was then performed in peripheral blood mononuclear cells samples up to two yr post-transplant. Quantity of donor-specific cell chimerism in peripheral blood was highest in the early post-transplant period reaching values of ~10% after liver-kidney and 2.8% after renal transplantation. From one wk after transplantation, renal transplant patients exhibited an amount of donor-specific mtDNA ranging from 0.01% to 0.1%. We developed a highly accurate, sensitive, and rapid real-time quantitative PCR method using sequence-specific primers and fluorescent hydrolysis probes for the detection of at least 0.01% donor-specific cells in the recipient's peripheral blood after renal transplantation.
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Affiliation(s)
- André Hoerning
- Department of Pediatrics II, Children's Hospital, University of Duisburg-Essen, Essen, Germany.
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SZABADOS TAMÁS, BAKÁCS TIBOR. SUFFICIENT TO RECOGNIZE SELF TO ATTACK NON-SELF: BLUEPRINT FOR A ONE-SIGNAL T CELL MODEL. J BIOL SYST 2011. [DOI: 10.1142/s0218339011003919] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Current consensus postulates that the class I-antigen processing system is evolved to present microbial antigens to specific T cells. Since such cells are rare and short-lived, they require three to five days to attain fighting strength. During this critical period he innate immune system holds back the briskly multiplying pathogens. Nevertheless, a T cell response is measurable in the lymph nodes draining the infection site within 12 to 18 h. In order to explain this paradox here we suggest a new T cell model. This is based on the observation that T cells require continuous contact of the T cell receptor (TCR) with selecting self-peptide–major histocompatibility complex (MHC) molecules in the periphery for their survival. We postulate that a dynamic steady state, a so-called coupled system is formed through low affinity complementary TCR–MHC interactions between T cells and host cells. Under such condition it is sufficient to recognize what is self in order to attack what is not self. A coupled system is regulated via soluble forms of peptide–MHC and TCR molecules by the law of mass action. In a coupled system one signal is sufficient for T cell activation. The new model implies that a significant fraction of the naive polyclonal T cells are recruited into the first line of defense from the very outset of an infection, so the number of activated T cells is increased by several orders of magnitude compared to conventional models. The one-signal model also predicts that therapeutic administration of soluble agonist or antagonist T cell receptor ligands may be able to fine tune the homeostatic physiological regulatory mechanism and thus improve the treatment of some chronic diseases such as metastatic cancer, HIV/AIDS, and transplantation.
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Affiliation(s)
- TAMÁS SZABADOS
- Department of Mathematics, Budapest University of Technology and Economics, Műegyetem rkp 3, Budapest, 1521, Hungary
| | - TIBOR BAKÁCS
- Alfréd Rényi Institute of Mathematics, Hungarian Academy of Sciences, Reáltanoda u 13-15, Budapest, 1053, Hungary
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Abstract
PURPOSE OF REVIEW Infusions of bone marrow-derived cells together with 'space making' continue to be tested in clinical organ transplant tolerance protocols. These trials are based on the hypothesis that this might produce initial multilineage chimerism. There is some evidence that this in turn induces regulatory cells that control alloimmunity. Although a wealth of knowledge is available from animal models, this review deals with what we know or can speculate about donor bone marrow cells and chimerism in human organ transplantation. RECENT FINDINGS Calcineurin inhibitors are employed in most of these protocols to blunt the initial immune response. One protocol also has a stepwise regulatory cell generating treatment with sirolimus before total withdrawal. A number of donor chimeric lineages including stem cells, dendritic cells, myeloid precursors, and various lymphoid subpopulations have been described. Currently, it is recognized that the nature of cells that make up the chimerism could influence graft rejection versus acceptance. Tolerogenic donor chimeric cells may also generate regulatory subsets, thus controlling alloimmunity on two fronts. SUMMARY It might be speculated that prolonged and sustained regulation or possible anergy induced by chimerism may eventually lead to clonal deletion, thereby bringing about classical immunologic tolerance.
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Verdonk RC, Haagsma EB, Jongsma T, Porte RJ, Roozendaal C, van den Berg AP, Hepkema BG. A prospective analysis of the natural course of donor chimerism including the natural killer cell fraction after liver transplantation. Transplantation 2011; 92:e22-4. [PMID: 21814126 DOI: 10.1097/tp.0b013e318225283e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Päiväniemi OE, Musilova P, Raivio PM, Maasilta PK, Alho HS, Rubes J, Aittomäki K, Salminen US. Ingraft chimerism in lung transplantation--a study in a porcine model of obliterative bronchiolitis. Respir Res 2011; 12:56. [PMID: 21521503 PMCID: PMC3111361 DOI: 10.1186/1465-9921-12-56] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 04/26/2011] [Indexed: 11/19/2022] Open
Abstract
Background Bronchial epithelium is a target of the alloimmune response in lung transplantation, and intact epithelium may protect allografts from rejection and obliterative bronchiolitis (OB). Herein we study the influence of chimerism on bronchial epithelium and OB development in pigs. Methods A total of 54 immunosuppressed and unimmunosuppressed bronchial allografts were serially obtained 2-90 days after transplantation. Histology (H&E) was assessed and the fluorescence in situ hybridization (FISH) method for Y chromosomes using pig-specific DNA-label was used to detect recipient derived cells in graft epithelium and bronchial wall, and donor cell migration to recipient organs. Ingraft chimerism was studied by using male recipients with female donors, whereas donor cell migration to recipient organs was studied using female recipients with male donors. Results Early appearance of recipient-derived cells in the airway epithelium appeared predictive of epithelial destruction (R = 0.610 - 0.671 and p < 0.05) and of obliteration of the bronchial lumen (R = 0.698 and p < 0.01). All allografts with preserved epithelium showed epithelial chimerism throughout the follow-up. Antirejection medication did not prevent, but delayed the appearance of Y chromosome positive cells in the epithelium (p < 0.05), or bronchial wall (p < 0.05). Conclusions In this study we demonstrate that early appearance of Y chromosomes in the airway epithelium predicts features characteristic of OB. Chimerism occurred in all allografts, including those without features of OB. Therefore we suggest that ingraft chimerism may be a mechanism involved in the repair of alloimmune-mediated tissue injury after transplantation.
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Affiliation(s)
- Outi E Päiväniemi
- Department of Cardiothoracic Surgery, Helsinki University Hospital, University of Helsinki, P.O. Box 340, 00029 HUS, Helsinki, Finland.
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Pons JA, Revilla-Nuin B, Ramírez P, Baroja-Mazo A, Parrilla P. Desarrollo de inmunotolerancia en el trasplante hepático. GASTROENTEROLOGIA Y HEPATOLOGIA 2011; 34:155-69. [DOI: 10.1016/j.gastrohep.2010.11.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Accepted: 11/11/2010] [Indexed: 01/25/2023]
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Ex vivo-expanded DCs induce donor-specific central and peripheral tolerance and prolong the acceptance of donor skin grafts. Blood 2011; 117:2640-8. [PMID: 21220748 DOI: 10.1182/blood-2010-07-293860] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Dendritic cells (DCs) are known to regulate immune responses by inducing both central and peripheral tolerance. DCs play a vital role in negative selection of developing thymocytes by deleting T cells with high-affinity for self-peptide-major histocompatibility complexes. In the periphery, DCs mediate peripheral tolerance by promoting regulatory T-cell development, induction of T-cell unresponsiveness, and deletion of activated T cells. We studied whether allogeneic DCs, obtained from bone marrow cultured with either Flt3L (FLDCs) or granulocyte-macrophage colony-stimulating factor (GMDCs), could induce allospecific central and peripheral tolerance after IV injection; B cells were used as a control. The results showed that only FLDCs reached the thymus after injection and that these cells induced both central and peripheral tolerance to donor major histocompatibility complexes. For central tolerance, injection of FLDCs induced antigen-specific clonal deletion of both CD8 and CD4 single-positive thymocytes. For peripheral tolerance, injection of FLDCs induced donor-specific T-cell unresponsiveness and prolonged survival of donor-derived skin grafts. Tolerance induction by adoptive transfer of FLDCs could be a useful approach for promoting graft acceptance after organ transplantation.
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Trotter JF, O'Grady J. Operational tolerance after liver transplantation: raising the bar or tripping up? Am J Transplant 2010; 10:2193-4. [PMID: 20840484 DOI: 10.1111/j.1600-6143.2010.03252.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Donnez J, Squifflet J, Pirard C, Jadoul P, Dolmans MM. Restoration of ovarian function after allografting of ovarian cortex between genetically non-identical sisters. Hum Reprod 2010; 25:2489-95. [DOI: 10.1093/humrep/deq186] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Juan Alberto Fierro C. Monitoreo inmunológico: el comienzo de una nueva era en trasplantes. REVISTA MÉDICA CLÍNICA LAS CONDES 2010. [DOI: 10.1016/s0716-8640(10)70529-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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MARTINEZ-LOPEZ J, CROOKE A, GRANDE S, AYALA R, JIMÉNEZ-VELASCO A, GAMARRA S, MENEU JC, GILSANZ F. Real-time PCR quantification of haematopoietic chimerism after transplantation: a comparison between TaqMan and hybridization probes technologies. Int J Lab Hematol 2010; 32:e17-25. [DOI: 10.1111/j.1751-553x.2009.01166.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ravindra K, Wu S, McKinney M, Xu H, Ildstad S. Composite Tissue Allotransplantation: Current Challenges. Transplant Proc 2009; 41:3519-28. [DOI: 10.1016/j.transproceed.2009.08.052] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Accepted: 08/05/2009] [Indexed: 12/16/2022]
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Rahhal DN, Xu H, Huang WC, Wu S, Wen Y, Huang Y, Ildstad ST. Dissociation between peripheral blood chimerism and tolerance to hindlimb composite tissue transplants: preferential localization of chimerism in donor bone. Transplantation 2009; 88:773-81. [PMID: 19920776 PMCID: PMC2780434 DOI: 10.1097/tp.0b013e3181b47cfa] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Mixed chimerism induces donor-specific tolerance to composite tissue allotransplants (CTAs). In the present studies, we used a nonmyeloablative conditioning approach to establish chimerism and promote CTA acceptance. METHODS Wistar Furth (RT1A(u)) rats were conditioned with 600 to 300 cGy total body irradiation (TBI, day-1), and 100 x 10(6) T-cell-depleted ACI (RT1A(abl)) bone marrow cells were transplanted on day 0, followed by a 11-day course of tacrolimus and one dose of antilymphocyte serum (day 10). Heterotopic osteomyocutaneous flap transplantation was performed 4 to 6 weeks after bone marrow transplantation. RESULTS Mixed chimerism was initially achieved in almost all recipients, but long-term acceptance of CTA was only achieved in rats treated with 600 cGy TBI. When anti-alphabeta-T-cell receptor (TCR) monoclonal antibody (mAb) (day-3) was added into the regimens, donor chimerism was similar to recipients preconditioned without anti-alphabeta-TCR mAb. However, the long-term CTA survival was significantly improved in chimeras receiving more than or equal to 300 cGy TBI plus anti-alphabeta-TCR mAb. Higher levels of donor chimerism were associated with CTA acceptance. The majority of flap acceptors lost peripheral blood chimerism within 6 months. However, donor chimerism persisted in the transplanted bone at significantly higher levels compared with other hematopoietic compartments. The compartment donor chimerism may be responsible for the maintenance of tolerance to CTA. Long-term acceptors were tolerant to a donor skin graft challenge even in the absence of peripheral blood chimerism. CONCLUSIONS Mixed chimerism established by nonmyeloablative conditioning induces long-term acceptance of CTA, which is associated with persistent chimerism preferentially in the transplanted donor bone.
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Affiliation(s)
- Dina N Rahhal
- Institute for Cellular Therapeutics, University of Louisville, Louisville, KY 40202-1760, USA.
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