ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "Co-stimulation"

  • 2017 American Transplant Congress

    IL-7 Receptor Heterogeneity as a Mechanism for Repertoire Change During Post-Depletional Homeostatic Proliferation and Its Relation to Costimulation Blockade Resistant Rejection.

    H. Xu, T. Brennan, A. Kirk.

    Department of Surgery, Duke University School of Medicine, Durham, NC

    Transplant patients treated with belatacept without depletional induction show high rates of costimulation blockade resistant rejection (CoBRR); this has been associated with CD57+ T cells.…
  • 2017 American Transplant Congress

    Non-Invasive Detection of Rejection with ImmunoPET Imaging.

    D. Mathews,1 K. Lindsay,2 P. Santangelo,2 Y. Dong,1 J. Tso,3 A. Adams.1

    1Department of Surgery, Emory University, Atlanta, GA; 2Department of Biomedical Engineering, Georgia Tech, Atlanta, GA; 3JN Biosciences LLC, Mountain View, CA

    Current approaches to detect and diagnose rejection are retrospective and/or invasive. These methods assess the extent of end organ damage by insensitive and non-specific measures…
  • 2017 American Transplant Congress

    Costimulation Independent Acute Rejection Requires CD127 Signaling.

    D. Mathews, Y. Dong, S. Kim, C. Breeden, A. Adams.

    Department of Surgery, Emory University, Atlanta, GA

    Clinical costimulation blockade with belatacept leads to improved survival and graft function. However, a subset of patients experience costimulation independent rejection. We identified a critical…
  • 2017 American Transplant Congress

    TFR:TFH Cell Ratio Correlates with Anti-Donor Germinal Center Reactivity and Donor-Specific Antibody Formation Following Transplantation.

    G. La Muraglia II, M. Ford, I. Badell.

    Emory Transplant Center, Emory University School of Medicine, Atlanta, GA

    Kidney transplantation is the treatment of choice for patients with end-stage renal disease. Although short-term outcomes are excellent, long-term allograft survival rates remain inadequate. It…
  • 2017 American Transplant Congress

    How to Promote Regeneration After Ischemic Reperfusion Injury: Dual Role of CD 137 Agonistic Antibody.

    J. Lee,1,3 H. Kim,3 H. Chung,1 K. Park,1 B. Kwon,3,4 H. Cho.2,3

    1Internal Medicine, Ulsan University Hospital and College of Medicine, University of Ulsan, Ulsan, Korea; 2Surgery, Ulsan University Hospital and College of Medicine, University, Ulsan, Korea; 3Biomedical Research Center, Ulsan University Hospital, Ulsan, Korea; 4School of Biological Science, University of Ulsan, Ulsan, Korea

    Acute sterile inflammation can be induced by tissue damage caused by ischemia-reperfusion. In transplantation ischemia reperfusion injury (IRI) is unavoidable procedure. IRI causes delayed graft…
  • 2017 American Transplant Congress

    CTLA4-Ig Inhibits Effector CD8+ T Cell Function In Vivo and Rescues Ongoing Acute Allograft Rejection.

    J. Young,1 S. Khiew,1 J. Yang,1 M.-L. Alegre,2 A. Chong.1

    1Surgery, University of Chicago, Chicago, IL; 2Medicine, University of Chicago, Chicago, IL

    CLTA4-Ig is clinically approved for preventing rejection in kidney transplant recipients but current data suggest that it is less effective for memory T cells, and…
  • 2017 American Transplant Congress

    Lymphoid Isolation as an Adjuvant Maneuver for Belatacept-Based Immunotherapy.

    M. Mulvihill,1 K. Samy,2 R. Davis,1 F. Leopardi,1 B. Collins,1 A. Kirk.1

    1Surgery, Duke University Medical Center, Durham, NC; 2Surgery, Indianapolis University Medical Center, Indianapolis, IN

    Purpose: Belatacept targets de novo alloimmune responses with minimal off target effects in renal transplantation, though adjuvant therapy is required for control of costimulation-blockade resistant…
  • 2017 American Transplant Congress

    Increased Ischemic Inflammation Induces Recipient Endogenous Memory CD4 Cell-Graft Dendritic Cell Interactions to Provide Help for Activation of Endogenous Memory CD8 T Cells.

    H. Tsuda, T. Tanaka, C. Su, A. Valujskikh, R. Fairchild.

    Immunology, Cleveland Clinic, Cleveland, OH

    Memory T cells provide protection against recurrent pathogens, but memory T cells with donor-reactivity pose a major barrier to successful allograft transplant and tolerance induction.…
  • 2017 American Transplant Congress

    Evaluation of Function and TCR signaling Profile of CD57+ T Cells in Allo-Specific Immunity.

    H. Xu,1 T. Brennan,1 Q. Li,2 A. Kirk.1

    1Department of Surgery, Duke University School of Medicine, Durham, NC; 2Department of Immunology, Duke University School of Medicine, Durham, NC

    Our studies have showed that CD57+ cells are resistant to B7 costimulation blockade (CoB). We hypothesize that CD57+ cells are highly sensitive to T cell…
  • 2016 American Transplant Congress

    The Role and Mechanism of CD40/CD40L Expression on Different T-Cell Subsets.

    N. Granofszky, K. Hock, B. Mahr, N. Pilat-Michalek, T. Wekerle.

    Department of Surgery, Section of Transplantation Immunology, Medical University of Vienna, Vienna, Austria.

    Background: Several T-cell costimulatory pathways (i.e. CD28:B7 and CD40:CD40L) play a critical role in modulating alloreactivity, but their function on distinct T cell subsets remains…
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