Articles tagged "Mixed chimerism"

2022 American Transplant Congress
Acute Graft versus Host Disease (AGVHD) Related to Solid Organ Transplant (SOT) – A Fatal Complication
H. Shaikh¹, J. Awosika¹, B. Barakoti¹, B. Hambley¹, C. Alquist²
¹University of Cincinnati Medical Center, Cincinnati, OH, ²Hoxworth Blood Center, Cincinnati, OH
*Purpose: This case series highlights our institution's experience with solid-organ transplant (SOT) associated acute graft versus host disease (aGVHD), a rare and deadly complication of…
2022 American Transplant Congress
Tolerance of Allogeneic Kidneys with Durable (>200 Days) Multilineage Chimerism and Bone Marrow Engraftment in Cynomolgus Macaques
Y. Tomori¹, Y. Hisadome¹, D. Eisenson¹, K. Takeuchi¹, K. Okubo¹, C. Huang², D. Sachs¹, M. Sykes¹, K. Yamada¹
¹CCTI/Surgery and Medicine, Columbia University, New York, NY, ²University of Colorado Denver, Aurora, CO
*Purpose: We have previously reported that a regimen including anti-CD3 immunotoxin, 45 days of cyclosporine, and pre-transplant total body irradiation (TBI) promoted tolerance of kidney…
2022 American Transplant Congress
Belatacept Augments Mixed Chimerism in a Novel Nonhuman Primate Kidney Transplant Tolerance Induction Protocol
S. C. Kim, C. J. Little, J. H. Fechner, P. J. Chlebeck, J. Post, A. D'Alessandro, D. B. Kaufman
University of Wisconsin, Madison, WI
*Purpose: A novel protocol of antilymphocyte globulin (ATG), tomotherapy-based total lymphoid irradiation (TomoTLI), and adoptive cellular transfer was developed in a preclinical model of MHC-mismatched…
2022 American Transplant Congress
Increased Baboon Chimerism After Peripheral Blood Stem Cell Infusion from a Novel GalTKO Pig with Functional Humanized Il-3 Receptor
E. M. Duggan, N. P. Llore, J. M. Stern, H. Sakai, B. Piegari, K. Bruestle, D. Hajosi, B. Bhola, F. Huang, D. Ekanayake-Alper, D. H. Sachs, M. Sykes, R. J. Hawley, A. D. Griesemer
Columbia University Irving Medical Center, New York, NY
*Purpose: The purpose of this study was to investigate whether expression of a humanized IL-3 receptor (hCD123+hCD131) transgene in a GalTKO pig would improve levels…
2021 American Transplant Congress
Successful Induction of Hematopoietic Chimerism by Dual Inhibition of Mcl-1 and Bcl-2 Without Myeloablative Treatments in Nonhuman Primates
T. Hirose, D. Ma, G. Lassiter, T. Kawai
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA
*Purpose: Induction of hematopoietic chimerism by donor bone marrow transplantation (BMT) is essential for achievement of allograft tolerance in clinical HLA mismatched kidney transplantation, while…
2021 American Transplant Congress
Selective Bcl-2 Inhibition for Induction of Mixed Chimerism and Renal Allograft Tolerance without Myelosupression
G. Lassiter¹, T. Hirose¹, H. Sasaki¹, D. Ma¹, T. Oura¹, A. Dehnadi¹, A. Cosimi¹, P. Cippa², T. Fehr³, T. Kawai¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Division of Nephrology, Ente Ospedaliero Cantonale, Lugano, Switzerland, ³Division of Nephrology, University of Zurich, Zurich, Switzerland
*Purpose: Immunologic tolerance of renal allograft has been achieved by induction of hematopoietic chimerism through donor bone marrow transplantation (DBMT). The myeloablative and genetic toxicity…
2021 American Transplant Congress
Effects of IL-2 and/ or Anti-IL6R Therapy on Long-term Cardiac Allograft Survival in Non-Human Primates (NHPs)
C. L. Miller, K. J. Ahrens, J. M. O, P. M. Patel, J. A. Morrissette, D. Becerra, T. Costa, A. Dehnadi, I. M. Hanekamp, G. Benichou, J. C. Madsen
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA
*Purpose: Cardiac allograft tolerance in NHPs has been achieved by our group using a mixed chimerism model with allogeneic bone marrow transplant after non-myeloablative conditioning…
2020 American Transplant Congress
Orthogonal IL-2 Cytokine-Receptor Pair Capable of Selective Expansion of Regulatory T Cells Facilitates Alloengraftment
T. Hirai¹, F. Simonetta², L. L. Su³, L. Picton³, J. Baker², J. Lin⁴, P. Li⁴, W. J. Leonard⁴, K. C. Garcia³, R. S. Negrin²
¹Department of Urology, Tokyo Women's Medical University, Tokyo, Japan, ²Division of Blood and Marrow Transplantation, Stanford University, Stanford, CA, ³Departments of Molecular and Cellular Physiology and Structural Biology, Stanford University, Stanford, CA, ⁴Laboratory of Molecular Immunology, National Institutes of Health, Bethesda, MD
*Purpose: Adoptive transfer of regulatory T cells (Tregs) has been shown to improve alloengraftment in animal models. However, ex vivo Treg expansion for the purpose…
2020 American Transplant Congress
Induction of Delayed Immune Tolerance after Reconstructive Transplantation by Combining Donor Bone Marrow Transplantation and High-Dose Cyclophosphamide Treatment
Y. Guo¹, F. Messner¹, B. Oh¹, G. Furtmüller¹, W. Lee¹, D. Cooney¹, L. Luznik², G. Brandacher¹
¹Plastic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, ²Hematology, Johns Hopkins University School of Medicine, Baltimore, MD
*Purpose: Immunosuppression avoidance by induction of immune tolerance represents a primary goal in the field of transplantation. Yet, success of this concept relies on extensive…
2020 American Transplant Congress
Inducing Donor MHC Chimerism with Bone Marrow Derived Exosomes in Non-Human Primates
P. M. Patel¹, B. A. Gonzalez Nolasco¹, J. A. Morrissette¹, A. Prunevieille¹, K. J. Ahrens¹, J. M. O¹, D. C. Becerra¹, G. Benichou¹, J. C. Madsen²
¹Surgery, Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, ²Surgery, Center for Transplantation Sciences, Division of Cardiac Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA
*Purpose: Cardiac allograft tolerance in non-human primates (NHPs) has been achieved by our group via hematopoietic mixed chimerism consisting of an allogeneic bone marrow (BM)…

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