2020 American Transplant Congress
Human, Monkey Transplant Tolerance and IL35 “Exokine
1University of Wisconsin, Madison, WI, 2Surgery, University of Wisconsin, Madison, WI
*Purpose: Studies in B6 (H2b) mice tolerized to CBA (H2k) have shown that induced allospecific Tregs make 2 very different forms of immunoregulatory cytokines: 1)…2020 American Transplant Congress
Establishing an Induction Protocol for Long-Term Multilineage Mixed Chimerism in Rhesus Macaques
*Purpose: Mixed chimerism (MC) induction via non-myeloablative conditioning and bone marrow transplantation (BMT) induces tolerance to solid organs. Our standard MC induction protocol in cynomologous…2020 American Transplant Congress
Granulocyte-Colony Stimulating Factor (G-CSF) and Granulocyte-Macrophage CSF (GM-CSF) Administration Enriches for Highly Suppressive CD4+CD45RA–Foxp3hi Cells in Leukapheresis Products of Rhesus Monkeys
Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA
*Purpose: In humans, CD4+CD45RA-Foxp3hi T cells comprise a regulatory T cell (Treg) subset with highly suppressive function. We have previously shown that granulocyte-colony stimulating factor…2020 American Transplant Congress
Tracking Tregs in a Non-Human Primate Model with Expanded Autologous Treg Infusions In Vivo
*Purpose: Regulatory Tcell (Treg) therapy is a promising tool for tolerance induction in solid organ transplantation. Despite encouraging results in humans and monkeys, questions about…2020 American Transplant Congress
Transient Cd4+ T Cell and Cd20+ B Cell Depletion Leads to Prolonged Pig-To-Primate Kidney Xenograft Survival
1Emory University School of Medicine, Atlanta, GA, 2University of Miami, Miami, FL
*Purpose: “Delayed” antibody-mediated xenograft rejection is the one of the most important obstacle to clinical application of pig organ xenografts. The aim of this study…2020 American Transplant Congress
Early Post-Transplant Infusion of Ex Vivo-Expanded Autologous Polyclonal Regulatory T Cells (Treg) Prolongs Kidney Allograft Survival in Non-Lymphodepleted, CTLA4Ig-Treated Rhesus Monkeys
Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA
*Purpose: Rodent studies have demonstrated the utility of regulatory T cell (Treg) infusion for the promotion of tolerance to organ allografts. Here, we evaluated the…2020 American Transplant Congress
Long-term Functional Survival of Human Stem Cell-Derived Islets Microencapsulated in Alginate with CXCL12 in Non-Human Primates without Immunosuppression
*Purpose: Human pluripotent stem cell-derived islet-like cells (SC-islets) represent a practical source for beta-cell replacement to achieve a functional cure for type 1 diabetes. Long-term…2020 American Transplant Congress
Donor Mesenchymal Stem Cells in Combination with Co-Stimulation Blockade Prolong Allograft Survival
Surgery and Transplantation, Emory University, Atlanta, GA
*Purpose: Co-stimulation blockade (CoB) has emerged as a promising immunosuppression strategy and potential alternative to calcineurin inhibitors in solid organ transplantation. Despite recent advancements, CoB…2020 American Transplant Congress
Peak DSA Levels Pre-Transplant but Not at Transplant Predict Graft Survival
*Purpose: Immunization to major histocompatibility complex (MHC) antigens is a barrier in kidney transplantation (KTx) due to higher risk of antibody-mediated rejection (AMR) and graft…2020 American Transplant Congress
IL-6 Receptor Blockade But Not IL-2 Treatment Contributes to Long-Term NHP Cardiac Allograft Survival in Transient Mixed Chimeras
*Purpose: Long-term tolerance of cardiac allografts has been achieved in non-human primates (NHPs) using a mixed chimerism protocol and by co-transplanting a kidney from the…
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