2017 American Transplant Congress
Tolerant Pediatric Liver Transplant (LT) Recipients (TOL) from WISP-R (NCT00320606) Split into Two Phenotypically Distinct Groups by PD1 Expression on CD4+ T Cells at Baseline, Prior to Immunosuppression Withdrawal (ISW).
Background: Combinations of cell surface markers such as PD1, CD57, and/or KLRG1 identify T cells that may fail to respond to cognate antigen challenge –…2017 American Transplant Congress
CD8+ TAb-supp Cells Suppress the Production of Multiple Alloantibody Isotypes in Response to MHC-Mismatched Cellular and Vascularized Allografts.
Surgery, The Ohio State University Wexner Medical Center, Columbus, OH
We have reported that a CD8+ T cell subset, we termed CD8+ TAb-supp cells, inhibits the production of alloAb after hepatocyte transplant (HcTx) in part…2017 American Transplant Congress
Vascularized Bone Marrow Mechanisms of Immunomodulation.
University of Maryland School of Medicine, Baltimore, MD
Introduction:Hand and face transplants containing co-transplanted bone may have improved outcomes. We have previously utilized a NHP model to demonstrate that VCA containing VBM have…2017 American Transplant Congress
CD8+ TAb-supp Cells Are Key Inhibitors of Humoral Alloimmunity by Inhibiting CD4+TFH Cells and Killing Germinal Center B Cells.
Surgery, The Ohio State University Wexner Medical Center, Columbus, OH
Alloantibodies (alloAb) play a critical role in acute and chronic rejection after transplantation (Tx). It is well known that CD4+ T cells and B cells…2017 American Transplant Congress
MHC Class II-Peptide Complexes Displayed on Activated T Cells Guide Treg Suppression.
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA
Background: Regulatory T cell (Tregs) therapy remains a promising strategy for minimizing immunosuppression and extending allograft survival. Although Treg suppression requires initial activation through cell…2017 American Transplant Congress
Nephrectomy of the Failed First Kidney Allograft Predisposes Kidney Transplant Recipients to Presensitization with Alloreactive T-Cells and Inferior Allograft Survival After Retransplantation.
During the last two decades the number of recipients (KTRs) of a previous kidney transplantation being evaluated and waitlisted for a subsequent kidney transplantation has…2017 American Transplant Congress
T-Cell Aging Parameters in the Lymph Node and Peripheral Blood Are Strongly Associated but Terminally Differentiated T Cells Are Mainly Located within the Circulation.
IntroductionAgeing is associated with changes in the peripheral T-cell immune system, which can be significantly influenced by latent cytomegalovirus (CMV)-infection. Therefore, we wanted to investigate…2017 American Transplant Congress
Senescence and Uremia Effects in Circulating T Cells Diverge in TREG Population and Cause T Cell Shift to a Memory Profile.
Elderly kidney transplant recipients(EKtx) have higher malignancies and infections rates, but lower acute rejection incidence. Senescence seems to result in shift to memory profile and…2017 American Transplant Congress
Designing a Novel Selective Immunoproteasome Inhibitor Reveals a Critical Role of the IP and STAT5 Pathway in Regulating T Cell Exhaustion and Promoting Long Term Heart Allograft Acceptance.
Constitutive proteasomes (c-20S) are ubiquitously expressed cellular proteases that degrade polyubiquitinated proteins and regulate cell functions. Immunoproteasomes (IP or i-20S) are primarily expressed in immune…2017 American Transplant Congress
Stability of Immune Phenotype, Alloreactive, and Antiviral Immunity After Switch to Belatacept-Based Regimen After Kidney Transplantation.
David Geffen School of Medicine at UCLA, Los Angeles, CA
Purpose: This investigator-initiated study examines the impact of belatacept on T cell immune phenotype and function.Methods: 14 patients who had completed the study protocol were…
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