2016 American Transplant Congress
Acute Rejection in Non-Human Primates Treated with Belatacept Is Mediated by a Unique CD8 Memory Subset.
Belatacept is a high affinity version of the fusion protein CTLA4-Ig that blocks CD28 mediated T cell costimulation, providing a more targeted/less toxic form of…2016 American Transplant Congress
Regulatory T Cell Infusion Can Enhance Memory T Cell and Alloantibody Responses in Lymphodepleted Nonhuman Primate Heart Allograft Recipients.
Background:The ability of regulatory T cells (Treg) to prolong allograft survival and promote transplant tolerance in lymphodepleted rodents is well-established. Few studies have addressed the…2016 American Transplant Congress
Limited Efficacy of Bortezomib on Desensitization via Rapid Humoral Compensation in a Sensitized Rhesus Model.
1Surgery, Duke University, Durham; 2Surgery, Emory University, Atlanta.
Sensitized patients comprise a significant proportion (30%) of candidates on the waiting list for transplantation. With recent evidence that the presence of donor-specific antibodies (DSA)…2016 American Transplant Congress
Late Renal Xenograft Failure Is Antibody-Mediated: Description of the Longest-Reported Survival in Pig-to-Primate Renal Xenotransplantation.
Introduction. Xenotransplantation has the potential to alleviate the organ supply shortage, yet pig-to-primate renal xenotransplant has met limited success due to natural preformed anti-pig antibody.…2016 American Transplant Congress
Utilizing HLA Single Antigen Flow Beads Assays to Evaluate Anti-MAMU Antibody in Sensitized Nonhuman Primate Model.
[Background] Non-human primate models of sensitization provide great preclinical models to investigate the mechanisms of antibody-mediated rejection or desensitization. Now there a growing interest on…2016 American Transplant Congress
CXCL12 as Innovative Immune Isolating Chemokine for Microencapsulated Allo and Xeno-Transplantation in NHPs.
Introduction The purpose of this study is to determine whether a clinical-grade alginate-microencapsulant incorporating CXCL12, can protect and sustain the function of allo and/or adult…2016 American Transplant Congress
Radiosensitive Cell Population Prolongs Graft Survival of Vascularized Composite Allografts in Non-Human Primates.
University of Maryland School of Medicine, Baltimore, MD.
Background: Vascularized composite allografts (VCA) containing vascularized bone marrow (VBM) prolong graft survival. To help elucidate this protective immunomodulatory effect, we irradiated donor facial VCA…2016 American Transplant Congress
Skin as a Harbinger of Rejection of Underlying Structures in Vascularized Composite Allografts: Concordance or Discordance?
Vascularized composite allografts (VCA) are composed of multiple tissue types. It has not been determined as to whether there is an immune hierarchy or differential…2016 American Transplant Congress
Belatacept Immunotherapy Is Not Augmented by Blockade of Activated LFA-1 in a Nonhuman Primate Renal Transplant Model.
1Department of Surgery, Duke University Medical Center, Durham, NC; 2Emory University, Atlanta, GA.
Purpose: Belatacept specifically targets de novo alloimmune responses without off target side effects. However, resistant alloreactive memory T cells have complicated its use. LFA-1 therapy…2015 American Transplant Congress
Anti-CD122 + Costimulation Blockade Prolongs Allograft Survival
1Emory Transplant Center, Emory University, Atlanta, GA; 2JN Bioscience, Mountanview, CA.
Introduction: Effective T cell activation and effector function requires (1) cognate antigen recognition (2) appropriate costimulation and (3) successful cytokine signaling. Recently approved strategies to…
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