2019 American Transplant Congress
A Mouse Model of Vascularized Heterotopic Spleen Transplantation for Studying Lymphocyte Biology and Transplant Immunity
*Purpose: Spleen-derived lymphocytes and myeloid cell populations are critical to the development of organ transplant ischemia-reperfusion injury (IRI) and allograft rejection. In this study, we…2019 American Transplant Congress
Superiority of Donor-Specifically vs. Polyclonally Expanded Regulatory T Cells in Controlling Graft Rejection in the NSG Mouse Human Skin Graft Model
*Purpose: Naturally occurring CD4+CD25highFOXP3+ Regulatory T cells (Tregs) function as mediators of immune homeostasis. So, they are beginning to be utilized for controlling hyper-immunity and…2019 American Transplant Congress
Targeting Cell Metabolism for Efficient Large-Scale Expansion of Functional Regulatory T Cells
University of Kentucky, Lexington, KY
*Purpose: A growing body of evidence recognizes the balance between graft-reactive effector T cells and graft-protective regulatory T cells (Tregs) as the ultimate determinant of…2019 American Transplant Congress
Age-Related Effects on Thymic Output and Homeostatic T Cell Expansion Following Depletional Induction
Surgery, Duke University, Durham, NC
*Purpose: Alemtuzumab induction leads to profound T cell depletion followed by a prolonged period of repopulation. Repopulation is thought to be influenced both by thymic…2019 American Transplant Congress
Development of De Novo DSA after Kidney Transplant Correlates with Low Quantity of Peripheral Blood “Antibody-Suppressor” CD8+ T Cells
*Purpose: It is well known that CD4+ T cells provide “help” for antibody production in vivo. Our group discovered a novel subset of murine antibody-suppressor…2019 American Transplant Congress
Treg Lymphotoxin and Lymphatic Endothelial Cell Lymphotoxin Receptor Interactions Are Required for Treg Stability and Allograft Protection
*Purpose: Regulatory T cells (Treg) restrain allograft rejection through suppressor functions that are dependent upon expression of the transcription factor Foxp3, their proper migration, and…2019 American Transplant Congress
Comparative Use of Single mTOR vs Dual mTOR/PI3K Inhibition in Regulatory T Cell Expansion for Clinical Application in Transplantation
University of Kentucky, Lexington, KY
*Purpose: Experimental and pre-clinical evidence suggest that adoptive transfer of regulatory T cells (Tregs) could be an appropriate therapeutic strategy to induce tolerance and improve…2019 American Transplant Congress
TORC1 Inhibition In Vitro and in a Humanized Mouse Model Protects Activated Human Regulatory T Cells from Self-Inflicted Damage via Granzyme B
Transplantation Research Center, BWH/Harvard Medical School, Boston, MA
*Purpose: Optimizing Regulatory T cells (Tregs) survival is of utmost importance to maximize the efficacy of utilizing them in adoptive cell therapy. We previously described…2019 American Transplant Congress
FcγRIIB is a Novel CD8+ Effector T Cell Intrinsic Regulatory Pathway That Correlates with Freedom from Rejection in Renal Transplant Patients
*Purpose: To understand the functional role and clinical relevance of FcγRIIB on CD8+ T cells in transplantation.*Methods: See results*Results: FcγRIIB is the sole inhibitory Fcγ…2019 American Transplant Congress
The Number of Donor-Specific IL-21 Producing Cells before and after Transplantation Predicts Kidney Graft Rejection
*Purpose: Interleukin (IL)-21 supports induction and expansion of CD8+ T cells, and can also regulate the differentiation of B cells into antibody-producing plasma cells. We…
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