Articles tagged "Mixed chimerism"

2020 American Transplant Congress
Interim Experience in a Phase 3 Prospective, Randomized, Multi-Center, Open-Label, Controlled Trial of Cellular Immunotherapy with MDR-101 for Induction of Immune Tolerance in Recipients of HLA-Matched, Living Donor Kidney Transplants
D. Kaufman¹, J. Piper², M. Stegall³, S. Akkina⁴, E. Marin⁵, A. Gaber⁶, Y. Qasi⁷, T. Srinivas⁸, D. Alonso⁹, A. Patel¹⁰, M. Laftavi¹¹, A. Shah¹², S. Collette¹³, E. Stites¹⁴, K. Chavin⁸, S. Crowley¹⁵
¹UW, Madison, WI, ²INOVA, Fairfax, VA, ³Mayo, Rochester, MN, ⁴LUMC, Chicago, IL, ⁵Yale, New Haven, CT, ⁶Houston Methodist, Houston, TX, ⁷USC, Los Angeles, CA, ⁸UH Cleveland, Cleveland, OH, ⁹Intermountain, Murray, UT, ¹⁰SBMC, Livingston, NJ, ¹¹UH Upstate, Syracuse, NY, ¹²TJU, Philadelphia, PA, ¹³CIUSSS, Montreal, QC, Canada, ¹⁴UCH, Denver, CO, ¹⁵Medeor, San Francisco, CA
*Purpose: The goals of tolerance in patients with kidney transplants (KTxp) are to eliminate the lifelong need for immunosuppressive drugs (IS) and to prevent graft…
2019 American Transplant Congress
Bcl-2 Inhibition with Venetoclax Promotes Induction of Mixed Chimerism and Renal Allograft Tolerance without Severe Myelosuppression in Non-Human Primate
H. Sasaki¹, D. Ma¹, T. Oura¹, A. Dehnadi¹, I. Rosales², B. Cosimi¹, P. Cippa³, T. Fehr³, T. Kawai¹
¹Surgery, Massachusetts General Hospital, Boston, MA, ²Pathology, Massachusetts General Hospital, Boston, MA, ³Medicine, University of Zurich, Zurich, Switzerland
*Purpose: Specific Bcl-2 inhibition has been shown to promote mixed chimerism and skin allograft tolerance without myelosuppressive conditioning in murine models. To extend this approach…
2019 American Transplant Congress
Tolerance Induction with Hematopoietic Stem Cells in Kidney Transplantations
K. Lee, J. Park, Y. Chung, S. Kim
Department of Surgery, Samsung Medical Center, Seoul, Korea, Republic of
*Purpose: Tolerance induction is considered to be the final goal in the field of organ transplantation. We have performed combined bone marrow and kidney transplantation…
2019 American Transplant Congress
Prolongation of Allograft Survival via Donor MHC Chimerism Induced by Exosomes
B. Gonzalez Nolasco¹, M. Wang¹, W. Orent¹, A. Prunevieille¹, J. O¹, K. Ahrens¹, J. C. Madsen², G. Benichou¹
¹Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Department of Surgery, Center for Transplantation Sciences, Division of Cardiac Surgery, Massachusetts General Hospital, Boston, MA
*Purpose: Achieving robust and durable host immune tolerance of allogeneic transplants is the ultimate goal in clinical transplantation. Mixed chimerism induced via donor bone marrow…
2019 American Transplant Congress
Expansion of Regulatory T and B Cells in Swine Rendered Tolerant of Allogeneic Vascularized Composite Allografts via Mixed Chimerism
G. Saviane¹, A. Lellouch¹, A. Andrews¹, L. Lantieri², M. Randolph¹, G. Benichou¹, C. Cetrulo Jr¹
¹Center for Transplantation Sciences, Division of Plastic Surgery, Boston, MA, USA, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA, Boston, MA, ²European Georges Pompidou Hospital, University of Paris, Department of Plastic Surgery, Paris, France
*Purpose: Prevention of acute rejection of vascularized composite allografts (VCAs) requires ongoing systemic immunosuppression, which subject patients to infectious, metabolic, reno-vascular and neoplastic complications. It…
2019 American Transplant Congress
Significantly High FOXP3 mRNA in the Renal Allograft as a Mechanism of Tolerance Induced by Transient Mixed Chimerism in Non-Human Primates
M. Matsunami¹, I. Rosales¹, T. Oura¹, B. Adam², M. Mengel², R. Smith¹, A. Cosimi¹, R. Colvin¹, T. Kawai¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Harvard Medical School, Boston, MA, ²Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
*Purpose: Treg-rich organized lymphoid structures (TOLS) has been identified in recipients with renal allograft tolerance induced by transient mixed chimerism in non-human primates (NHPs) and…
2019 American Transplant Congress
After 10 Years: The Results of HLA Mismatched Combined Kidney and Bone Marrow Transplantation for Renal Allograft Tolerance
T. Kawai¹, D. H. Sachs¹, T. Spitzer¹, N. Tolkoff-Rubin¹, R. B. Colvin¹, N. Elias¹, M. Sykes², A. Cosimi¹
¹Massachusetts General Hospital, Boston, MA, ²Columbia University, NYC, NY
*Purpose: Based on decades-long basic studies in animal models, we have applied combined kidney and donor bone marrow transplantation (CKBMT) for induction of allograft tolerance…
2019 American Transplant Congress
Desensitization Using Costimulatory Blockade and Bortezomib Does Not Prevent DSA Formation and Rejection in Reconstructive Transplantation
F. Messner¹, Y. Guo¹, R. Chen², Y. Kuo², G. Brandacher¹, B. Oh¹
¹Department of Plastic and Reconstructive Surgery, Johns Hopkins UJohns Hopkins University School of Medicine, Baltimore, MD, ²Division of Plastic Surgery, Kaohsiung Medical Univerity Hospital, Kaohsiung, Taiwan
*Purpose: Sensitiziation in form of donor-specific antibodies (DSA) and subsequent antibody-mediated rejection (AMR) constitute some of the greatest risk factors for allograft rejection and long-term…
2019 American Transplant Congress
A Mouse Model of Vascularized Heterotopic Spleen Transplantation for Studying Lymphocyte Biology and Transplant Immunity
L. Qiu¹, J. Wang², R. Fernandez³, X. Yeap¹, S. Han¹, F. Zheng¹, C. Lin², Z. J. Zhang¹
¹Comprehensive Transplant Center, Department of Surgery, Northwestern University, Chicago, IL, ²Northwestern University, Chicago, IL, ³Department of Surgery, Northwestern University, Chicago, IL
*Purpose: Spleen-derived lymphocytes and myeloid cell populations are critical to the development of organ transplant ischemia-reperfusion injury (IRI) and allograft rejection. In this study, we…
2019 American Transplant Congress
Full and Sustained Donor Hematopoietic Chimerism after an Isolated Kidney Transplantation
J. Zuber¹, O. Boyer¹, B. Neven¹, E. Six², R. Berthaud¹, M. Ould Rabah¹, S. Sobrino², C. Lagresle², I. André-Schmutz², M. Cavazzana¹, S. Blanche¹, R. Salomon¹
¹Paris Descartes University, Paris, France, ²Inserm UMRS 1163, Paris, France
*Purpose: Full donor chimerism was reported three times in the absence of myelosuppressive regimen, only after liver or multivisceral transplantation, but never after kidney transplantation.…