2016 American Transplant Congress
IL-10 Expression of In Vitro Activated B Cells as A Biomarker for B Cell Tolerance.
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
Background: A significant role for regulatory B cell has been suggested in kidney transplant recipients who achieved operational tolerance while receiving conventional immunosuppression. We studied…2016 American Transplant Congress
Targeting IFN-g-Expressing TIM-4+ B Effector (Beff) Cells as a Novel Strategy to Prevent Allograft Rejection.
1University of Pittsburgh, Pittsburgh; 2Harvard Medical School, Boston.
B cell depletion can augment or inhibit auto- and allo- immune responses in humans and mice without altering Ig levels. This is likely due to…2015 American Transplant Congress
A Novel, Blocking Anti-CD40 Monoclonal Antibody Prolongs Non-Human Primate Renal Allograft Survival in the Absence of B-Cell Depletion Or Thromboembolic Events
Background. CD40-CD154 pathway blockade prolongs renal allograft survival in non-human primates (NHPs). However, antibodies targeting CD154 were associated with an increased incidence of thromboembolic complications…2015 American Transplant Congress
Germinal Centre Autoimmunity Mediates Progression of Allograft Vasculopathy, With Essential Help Provided By T Follicular Cells
Dept of Surgery, University of Cambridge, Cambridge, United Kingdom.
Introduction: : In our previous work we have shown that donor CD4 T cells within heart grafts initiate anti-nuclear autoantibody responses. Here we clarify the…2015 American Transplant Congress
Distinct Clinical Relevance of BAFF Expression Within the Kidney Graft and Soluble BAFF Serum Levels Indicate Confined Alloimmune Responses Disconnected from the Periphery
As soluble B-cell activating factor (BAFF) serum levels (sBAFF) may not reflect BAFF concentrations within the graft, what could be related to the inconsistencies in…2015 American Transplant Congress
CN Inhibition (But Not mTOR Inhibition) of a Novel CD8+ T Cell Regulatory Mechanism Results in Higher Alloantibody Posttransplant
Department of Surgery, CTC, The Ohio State University Wexner Medical Center, Columbus, OH.
MTOR inhibitors [mTORi; Rapamycin, (Rapa)] and calcineurin inhibitors [CNi; Tacrolimus (Tac)] are immunosuppressive drugs commonly used to suppress the rejection of transplanted organs and tissues.…2015 American Transplant Congress
In Vitro Evidence That CTLA4Ig Attenuates Recall Alloantibody Responses
Background: CTLA4Ig is an agonist that blocks CD28-B7 costimulation, downregulating T cell immunity, but also appears to negate T cell-dependent B cell activation, thus inhibiting…2015 American Transplant Congress
Alterations in Peripheral Blood B Cell Subpopulations in Kidney Transplant Recipients With DSA
Peripheral blood B cell subpopulations were assessed over time (1, 3, 6, 9, and 12 months) in living donor kidney transplant recipients undergoing thymoglobulin (n…2015 American Transplant Congress
Toll-Like Receptor 4-Signaling Abrogates Inhibitory Effect of Calcineurin Inhibitor on B-Cells Responding to Blood Group A-Antigens
Transplant Unit, Hiroshima University, Hiroshima, Japan.
Aim: Bacterial infection following ABO-incompatible organ-transplantation is associated with refractory Ab-mediated rejection. Here, we investigated the influence of toll-like receptor (TLR)-signaling, via the binding of…2015 American Transplant Congress
Molecular Correlates of Atrophy-Fibrosis in Human Kidney Transplants Provides a New Model of Renal Fibrosis
University of Alberta, Edmonton, Canada.
We studied the effect of time post-transplant on atrophy-fibrosis (AF) and the molecular associations with AF in 703 kidney transplant indication biopsies (bx) 3 days…
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