2022 American Transplant Congress
Mitochondrial Dysfunction and Alloimmunity in Chronic Lung Transplant Rejection
*Purpose: Bronchiolitis obliterans syndrome (BOS) remains a major cause of death after lung transplantation. Unfortunately, we lack effective treatments for BOS as the mechanisms by…2021 American Transplant Congress
Environmental Factors That Shape T-cell Alloimmunity: Role of the Microbiome
*Purpose: Unlike other types of immunity, T-cell alloimmune responses to mismatched MHC proteins do not need priming by a previous exposure. While genetic differences between…2021 American Transplant Congress
Suppression of T Cell Proliferation by Activated Nonhuman Primate B Cells
Massachusetts General Hospital, Boston, MA
*Purpose: We previously generated Toll-like receptor (TLR)-activated B cells in rodent settings. These B cells can suppress T cell proliferation via in vitro mixed lymphocytes…2021 American Transplant Congress
Naïve Rhesus Monkey CD4+CD8loT Cells Comprise High Percentage of Memory T Cells with Strong Effector Function
Department of Surgery, University of Pittsburgh, PITTSBURGH, PA
*Purpose: Human CD4+CD8loT cells have been reported in patients with organ allograft rejection. We evaluated the incidence, phenotype, and function of CD4+CD8loT cells in nonhuman…2021 American Transplant Congress
K562 Cells Expressing HLA-A2 Stimulate Alloreactive CD8+ T Cells
Emory Transplant Center, Emory University, Atlanta, GA
*Purpose: T cell-mediated rejection is a significant factor that leads to graft damage and loss in transplant recipients. Due to the complexity of the TCR:pMHC…2021 American Transplant Congress
The Assesment of Pre-transplant Donor-reactive IL-21 Producing T Cells as a Tool to Identify Patients at Risk for Acute Rejection
*Purpose: The measurement of panel-reactive antibodies (PRA) has proven valuable in the transplant setting but it does not account for the presence of donor-reactive memory…2021 American Transplant Congress
Hla-dq Epitope Mismatch Predicts De Novo Donor-Specific Antibody Formation and Acute Cellular Rejection After Living Donor Liver Transplantation
*Purpose: Epitope mismatch (MM) effect on living donor liver transplantation (LDLT) has not been studied in detail. This study aimed to investigate the role of…2020 American Transplant Congress
Autophagy-Lysosome Inhibitor Chloroquine Prevents CTLA-4 Degradation of T Cells and Attenuates Acute Rejection in Murine Skin and Heart Transplantation
*Purpose: The immune checkpoint cytotoxic T lymphocyte antigen-4 (CTLA-4), which was induced upon T cell activation but degraded quickly, has been targeted in the clinical…2020 American Transplant Congress
Prospective Donor-Specific CellUlar Alloresponse Assessment for Immunosuppression MinImization in De Novo Renal Transplantation: Results of a Randomized Controlled Biomarker-Guided Trial
*Purpose: Early immunosuppression minimization is associated with higher rates of BPAR. Preformed donor-specific T-cell alloreactivity (DST) assessed with an IFN-γ ELISPOT assay has shown to…2020 American Transplant Congress
Successful Tacrolimus Withdrawal in Kidney Transplant Recipients Unleashes a Peripheral Blood Transcriptional and Functional Signature Resembling Exhaustion
Icahn School of Medicine at Mount Sinai, New York, NY
*Purpose: Tacrolimus (Tac) is an effective anti-rejection drug in kidney transplant recipients (KTR), but its off-target effects make withdrawal desirable. Studies indicate that Tac can…
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