2019 American Transplant Congress
Indicators of Impending Pig Organ Xenograft Failure: Relevance to Clinical Xenotransplantation
1University of Alabama at Birmingham, Birmingham, AL, 2Revivicor, Inc., Blacksburg, VA
*Purpose: In pig-to-baboon organ xenotransplantation, coagulation dysfunction and inflammation have been suggested to be associated with acute humoral xenograft rejection. We have evaluated platelet counts,…2019 American Transplant Congress
CD46 Transgene Modification and Thrombosis in Neonatal Porcine Islet Xenotransplantation
Surgery, Duke University, Durham, NC
*Purpose: Vascular thrombosis activation is an important cause for early xeno-islet loss. To better understand the thrombosis process in islet xenotransplantation and the effect of…2019 American Transplant Congress
TMA Development in Kidney and Heart Xenografts Treated with Anti-CD40 or Anti-CD154 Antibodies
1Surgery, MGH, Boston, MA, 2Pathology, MGH, Boston, MA
*Purpose: Genetically modified Galactose-α 1,3-galactose knockout transgenic swine expressing human CD55 (GTKO.hCD55) are resistant to hyperacute rejection of xenografts. We compare anti-CD154 and anti-CD40 antibody-based…2019 American Transplant Congress
The Role of CD47/SIRPα and CD47/TSP-1 Pathways in Pig-to-Baboon Kidney Transplantation Using hCD47 Transgenic Kidneys
*Purpose: We have recently reported that both CD80 upregulation and the degradation of SMPDL-3b on glomerular podocytes are involved in the development of post kidney…2019 American Transplant Congress
Xenorejection of Porcine Islets in Humanized Mice is Dominated by a Human Th17 Cytokine Immune Response
*Purpose: We have previously shown that interleukin(IL)-17 producing CD4 T cells (Th17 response) dominate in the early anti-donor immune responses of a pig-to-mouse xenogeneic model…2019 American Transplant Congress
Kidney Xenotransplantation from Genetically Engineered Pigs to Baboons with FDA-Approved Immunosuppressive Therapy
*Purpose: Genetically-engineered pigs might present a solution to the critical shortage of organs for clinical transplantation. The aims of this study were to evaluate the…2019 American Transplant Congress
Donor-Specific Tregs Prolong Peripheral Chimerism in Baboons Receiving GalTKO hCD47-tg Porcine Peripheral Blood Stem Cells
*Purpose: We have previously evaluated the ability of transplantation of polyclonal expanded recipient T regulatory cells to prolong xenogeneic chimerism and skin grafts after transplantation…2019 American Transplant Congress
Utilizing Ides To Eliminate Residual Antibodies Targeting Xenografts
Massachusetts General Hospital, Boston, MA
*Purpose: A significant hinderance to the successful use of xenotransplantation has been the presence of preformed antibodies against the donor antigens, known as xenoantigens. Using…2019 American Transplant Congress
TCR Transgenes to Understand Human Xenotolerance Induction
Columbia Center for Translational Immunology, New York, NY
*Purpose: Swine thymus transplantation is a promising approach to clinical tolerance for pig-to-human xenotransplantation. In humanized mice, a swine thymus graft supports de novo selection…2019 American Transplant Congress
Islet Xenotransplantation: A Quest for Clinically Available Immunosuppression Regimens
1Surgery, Duke University, Durham, NC, 2University of Massachusetts, Worcester, MA
*Purpose: Porcine islet xenotransplantation has progressed significantly in non-human primate (NHP) studies. However, all successful NHP studies have relied upon immunosuppressive regimens that utilize drugs…
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