2021 American Transplant Congress
Precision Medicine in Renal Transplantation: T-cell Repertoire Sequencing to Define Donor-specific Clones for Post-transplant Monitoring
*Purpose: Measuring donor-specific clonal responses offers a precise, sensitive and specific biomarker of immune recognition and activation. Combining deep immunophenotyping (DI) and T-cell receptor (TCR)…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
Evaluation of the Differentiation Program of Endogenous Antigen-specific CD8+T Cells Following Transplantation
1Pathology, Johns Hopkins University, Baltimore, MD, 2Surgery, Emory Transplant Center, Atlanta, GA
*Purpose: Despite advances in the survival of transplanted organs, acute T cell mediated rejection remains a significant clinical problem with few effective or targeted treatments.…2021 American Transplant Congress
IFNγ, and to a Lesser Extent TNFα, Elicits Protracted Endothelial Cell Expression of Costimulatory Molecules and Antigen Presentation Machinery
Pathology and Laboratory Medicine, UCLA, Los Angeles, CA
*Purpose: Beyond simply “recruiting” leukocytes to sites of injury, local stimulation by the donor vascular compartment may prolong alloimmune responses. Moreover, the dynamics of endothelial…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
TIGIT Identifies Polyfunctional Donor-Specific CD4+ T Cells Lost After Kidney Transplantation
Nephrology and Transplantation, Erasmus MC, Rotterdam, Netherlands
*Purpose: Development of T-cell hyporesponsiveness to donor antigen may explain the substantial decrease in the risk for acute rejection in the years following kidney transplantation.…2021 American Transplant Congress
Donor Mhc-independent Islet Rejection in Autoimmune Diabetes: Implications for Stem Cell Therapy
*Purpose: Stem cell technology is an attractive approach for generating insulin-producing cells for transplantation in insulin-dependent diabetes and potentially can be genetically modified. One recent…2020 American Transplant Congress
A Bioinformatics Pipeline for the Identification of Crucial Factors for Transplant Rejection Based on NGS Data
*Purpose: T and B cells are crucial parts of the human immune system and play an important role in transplantation. Since the mechanisms leading to…2020 American Transplant Congress
CD56DimCD16Bright NK Cells from Kidney Transplant Recipients with Antibody-Mediated Rejection Display Increased Proliferation, Self-Renewal, Pro-Inflammatory and Cytotoxic Profile
*Purpose: Contribution of NK cells to antibody-mediated rejection (ABMR) injuries have recently been highlighted through transcriptomic analysis and immunohistochemistry of kidney and heart allograft biopsies.…2020 American Transplant Congress
T Cells from Highly Sensitized Kidney Transplant Patients Display Distinct TCR Repertoires
1RIMUHC, Montreal, QC, Canada, 2McGill University, Montreal, QC, Canada
*Purpose: Sensitization to HLA antigens limits patient’s access to renal transplantation and causes higher risk of acute rejection and graft loss. T-cells, B-cells and donor-specific…
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