2021 American Transplant Congress
The Microenvironment of Belatacept-Resistant Rejection
Surgery, Emory University, Atlanta, GA
*Purpose: Belatacept is a co-stimulation blockade immunosuppressant, that despite demonstrating improved long-term outcomes, has not been widely adopted, in part, due to concern over early…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…2020 American Transplant Congress
Impact of Belatacept Conversion on Renal Function, Histology and Gene Expression in Kidney Transplant Patients with Chronic Active Antibody-Mediated Rejection
1Virginia Commonwealth University, Richmond, VA, 2ATAGC, Edmonton, AB, Canada
*Purpose: Chronic active antibody mediated rejection (cABMR) is a major cause kidney transplant (KT) loss. Current therapies have unclear efficacy and side effects. Basic and…2020 American Transplant Congress
Safety of Belatacept in HIV-Positive Kidney Transplant Recipients
*Purpose: Kidney allograft survival in HIV-infected patients is lower than in the general population. Belatacept (instead of anticalcineurins (CNI)) has been shown to have a…2020 American Transplant Congress
Determination of Programmed Cell Death Protein 1 (PD1) by Flow Cytometry, a Possible Follow-Up Tool in Renal Transplantation of High Immune Risk
*Purpose: Introduction: Currently, the follow-up of patients remains to be the serum creatinine level, being highly specific, however, with little sensitivity to determine the occurrence…2020 American Transplant Congress
p40 Homodimers Indirectly Induce Endogenous Donor-Reactive Memory CD8 T Cell Activation within High-Risk Cardiac Allografts and CTLA-4ig Resistant Graft Rejection via IL-15 Signaling
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: We have reported that longer duration of cold ischemic storage (CIS) prior to transplant resulted in increased proliferation of endogenous donor-reactive CD8 T cells…2020 American Transplant Congress
Notch Signaling Inhibition via Blockade of Delta-Like Ligand 4 Prevents Co-Stimulation Blockade Resistant Allograft Rejection
Surgery and Transplantation, Emory University, Atlanta, GA
*Purpose: Co-stimulation blockade (CoB) has emerged as a promising immunosuppression strategy with the advent of Belatacept, a novel CTLA4-Ig fusion protein that blocks CD28-mediated T…2020 American Transplant Congress
Comparison of Reduced-Dose and Labeled-Dose Belatacept Conversion with Immediate or Early Tacrolimus Withdrawal in Kidney Transplant Recipients without Maintenance Corticosteroids
1U Cincinnati, Cincinnati, OH, 2The Christ Hospital, Cincinnati, OH
*Purpose: A primary reason for conversion from tacrolimus (TAC) to belatacept (BELA) is to avoid nephrotoxicity. Previous published experiences with BELA-conversion regimens have shown increased…2020 American Transplant Congress
Altering Homeostatic Repopulation with Thymic Irradiation and Donor Mesenchymal Stem Cell Infusions in a Nonhuman Primate Model
Department of Surgery, Duke University Medical Center, Durham, NC
*Purpose: Lymphocyte depletion and subsequent homeostatic repopulation present opportunities to shape the alloreactive immune repertoire to favor tolerance. We tested if the addition of thymic…2020 American Transplant Congress
Selective Dual Co-Stimulatory Blockade of CD28/CD80-86 and PD1-PL2 with a Novel Recombinant Bi-Specific Fusion Protein (Hybri-2) Promotes Successful Humoral Desensitization in a Stringent Sensitized Rat Model
*Purpose: Humoral Alloimmune memory is a main barrier for successful kidney transplantation and is orchestrated by a compartmentalized cellular immune response driven by bone-marrow LLPCs…
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