2017 American Transplant Congress
Immune Tolerance Monitoring in Renal Allograft Tolerance Induced by Transient Mixed Chimerism in Nonhuman Primates.
Center for Transplant Science, Massachusetts General Hospital, Boston, MA
Background: We have previously reported donor specific expansion of regulatory T cells (Tregs) in nonhuman primate (NHP) recipients which achieved renal allograft tolerance after induction…2017 American Transplant Congress
Mesenchymal Stem Cells Suppress T Cell Proliferation and Improve Allograft Survival in a Nonhuman Primate Transplant Model.
Emory Transplant Center, Emory University, Atlanta, GA
Background: The clinical implementation of costimulation blockade (CoB) provides long-term benefit to transplant recipients, with the short-term drawback of increased acute rejection. Cellular therapies are…2017 American Transplant Congress
Dual Costimulatory Blockades Failed to Achieve Transplant Tolerance Despite Induction of Mixed Chimerism in NHPs.
Background: Our previous studies showed that substantial deletion of CD8+ memory T cells (TMEM) was necessary to induce mixed chimerism (MC) and allograft tolerance when…2017 American Transplant Congress
Autologous Expanded Tregs and Porcine Hematopoietic Cells to Prolong Xenogeneic Pig Skin Graft Acceptance in Baboons.
Background: Mixed chimerism (MC) has been shown to induce tolerance to allogeneic organs and has shown promise for application to xenotransplants, although long-term tolerance has…2017 American Transplant Congress
Prolonged Survival with Co-Stimulatory Blockade Based Immunosuppression in Pig-to-Primate Liver Xenotransplantation.
Massachusetts General Hospital, Boston, MA
Background: Since the first attempt in 1968, survival following pig-to-baboon liver xenotransplantation (LXT) has been limited to <9-days due to a lethal coagulopathy. To improve…2017 American Transplant Congress
CD4 Depletion Is Necessary and Sufficient for Long-Term Nonhuman Primate Xenotransplant Survival.
Introduction. Xenotransplantation may alleviate the organ shortage, yet experimental renal xenotransplant has met limited success. We have previously reported the longest surviving pig-to-nonhuman primate (NHP)…2017 American Transplant Congress
CD28 Directed Immunotherapy Is More Potent Than Belatacept in a Nonhuman Primate Xenotransplant Model.
Introduction. Xenotransplantation may alleviate the organ shortage, yet experimental renal xenotransplantation has met limited success. T cell-mediated damage remains a critical problem. Our group has…2016 American Transplant Congress
Combined CD122 and Costimulation Blockade Prolongs Allograft Survival by Controlling Expansion and Effector Function of Memory CD8 T Cells.
1Emory Transplant Center, Emory University, Atlanta, GA; 2JN Biosciences, Mountain View, CA.
CD8 memory T cells rely on signaling through CD122, the shared IL-2 and IL-15 receptor β-chain. The addition of anti-CD122 to costimulation blockade prolongs graft…2016 American Transplant Congress
Delayed Induction of Mixed Chimerism Permits Kidney-Induced Cardiac Allograft Tolerance to be Applied to Recipients of Cadaveric Organs.
(BACKGROUND)Cardiac tolerance in nonhuman primates (NHPs) has been induced for the first time by kidney co-transplantation in combination with donor bone marrow infusion when the…2016 American Transplant Congress
Non-Human Primate Lung Allograft Survival Is Prolonged by IL-6 Inhibition and ATG Treatment Possibly Through Expansion of Peripheral Regulatory T Cells.
Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
BACKGROUND: Inflammatory responses have been linked to the development of acute and chronic rejection after lung transplantation in various models. Previous studies have demonstrated that…
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