2017 American Transplant Congress
Persistent Donor Antigen Leads to Dysfunctional CD4+ Memory T Cell Development.
Tolerance to alloantigens is characterized by low alloreactive T cell responses upon restimulation with donor antigens, a state that can result from deletion of donor-specific…2017 American Transplant Congress
CTLA4-Ig in Combination with FTY720 Reduces the Frequency of Memory Alloreactive T Cells and Promotes Heart Allograft Survival in Sensitized Recipients.
Despite recent evidence of improved graft outcomes and safety, high incidence of early acute cellular rejection with belatacept has limited its use in clinical transplantation.…2017 American Transplant Congress
TIM-3 – CEACAM1 Checkpoint Regulation of T-Cell Activation and Hepatocellular Function in Liver Transplantation.
Background/Aim: We have documented crucial role of TIM-3 dependent T cell dysfunction in mouse orthotopic liver transplantation (OLT). CEACAM1 (CD66a; CM1; Carcinoembryonic Antigen-Related Cell Adhesion…2017 American Transplant Congress
Early Results of Immune Profile Emerging Before Detection of De Novo Humoral Alloimmunity in Kidney Transplant Recipients.
The purpose of this IRB-approved study is to determine if there is a potential role for CD8+ T cell-mediated suppression of donor specific alloantibody (DSA)…2017 American Transplant Congress
CD4 T Cells and Co-Engagement with Foreign Protein Are Required in Antibody Response to Non-Self Blood Group A-Antigen.
Background: ABO-incompatible heart transplantation (ABOi HTx) is safe during infancy and allows increased donor access. B-cell tolerance develops to donor A/B-antigen(s) (Ag) after ABOi HTx…2017 American Transplant Congress
Dendritic Cells That Highly Express SOCS1 Induce T-Cell Hypo-Responsiveness and Prolong Islet Allograft Survival.
Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
The capability of dendritic cells (DCs) to induce an immune response or immune tolerance is dependent on their status. Suppressor of cytokine signaling 1 (SOCS1)…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…
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