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American Transplant Congress abstracts

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Articles tagged "T cell activation"

  • 2022 American Transplant Congress

    Targeted Delivery of Costimulation Inhibitor to Lymph Nodes Promotes Transplant Tolerance via Fibroblastic Reticular Cells

    J. Zhao1, S. Jung1, X. Li1, H. Zhang1, S. Movahedi1, V. Kasinath1, M. Uehara1, J. Azzi1, P. Sage1, S. Tullius1, J. S. Bromberg2, R. Abdi1

    1Brigham and Women's Hospital, Boston, MA, 2University of Maryland School of Medicine, Baltimore, MD

    *Purpose: The lymph node (LN) is the primary site of alloimmunity activation and regulation during transplantation. Fibroblastic reticular cells (FRCs), the prominent cells of the…
  • 2022 American Transplant Congress

    MTOR Inhibition Acts Directly on Endothelial Cells to Induce Contact-Independent Immune-Modulation of Allo-Specific T Cell Activation

    H. Xu, L. Wang, V. A. Bendersky, Q. Gao, Q. Li, A. D. Kirk, H. Xu

    Duke University School of Medicine, Durham, NC

    *Purpose: Endothelial cells (ECs) form a barrier between vascularized organ allografts and host immunity and are known to provoke alloimmune responses. The mTOR inhibitor rapamycin…
  • 2022 American Transplant Congress

    Allograft TLR9 is Required for Endogenous Donor-Reactive Memory CD8 T Cell Activation in High-Risk Cardiac Allografts to Mediate CTLA-4Ig Resistant Graft Rejection

    E. H. Koritzinsky, D. Ueda, H. Tsuda, S. Miyari, R. L. Fairchild

    Inflammation and Immunity, Cleveland Clinic, Cleveland, OH

    *Purpose: Prolonged allograft cold ischemic storage (CIS) and subsequent increased ischemia-reperfusion injury (IRI) following solid organ transplant act through innate immune pathways that promote early…
  • 2022 American Transplant Congress

    PSGL-1-mTOR-TIM3 Signaling in a Murine Model of Hindlimb Transplantation

    K. Kadono1, F. Messner2, J. He2, Y. Guo2, B. Oh2, G. Brandacher2, J. Kupiec-Weglinski1

    1UCLA Medical Center, Los Angeles, CA, 2Johns Hopkins UJohns Hopkins University School of Medicine, Baltimore, MD

    *Purpose: Peri-transplant tissue damage driven by innate-adaptive immune cascades resulting from ischemia-reperfusion injury (IRI) is a major concern in vascularized composite allotransplantation (VCA). Here, we…
  • 2022 American Transplant Congress

    Toll-Like Receptor-4 Inhibitor, Resatorvid, Attenuates Allogenic T Cell Activation Against Human Pancreatic Islets by Decreasing CD69 Expression

    J. Mattke1, M. Plunk1, R. R. Kane1, B. Naziruddin2

    1Baylor University, Waco, TX, 2Baylor University Medical Ctr, Dallas, TX

    *Purpose: Allogenic and autoimmune response against islets remain major obstacles to improve long term function of islet transplants. Inhibition of toll-like receptor 4 (TLR4) using…
  • 2022 American Transplant Congress

    A Low Immuknow Level but Behold….pAMR1(H+) Rejection

    M. W. Weston

    Tampa General Hospital, Tampa, FL

    *Purpose: PURPOSE: The purpose of this study is to evaluate the mechanism of pAMR1(H+) rejection in heart transplant recipients with low ImmuKnow levels (ATP
  • 2021 American Transplant Congress

    Belatacept-Resistant T Cells are Activated by IFNα-IRF7 Pathway

    F. Herr, K. Bargiel, A. Vernochet, A. Durrbach

    UMR1186, Villejuif, France

    *Purpose: Second signal of activation play an important role in activation of T lymphocytes. Their control by checkpoint inhibitor is efficient in auto-immune disease and…
  • 2021 American Transplant Congress

    Inhibition of Fatty Acid Beta-Oxidation Prolongs Heart Allograft Survival

    B. W. Wong, Y. Zhu, H. Dun, L. Ye

    Surgery, Washington University School of Medicine, Saint Louis, MO

    *Purpose: To test the therapeutic efficacy of pharmacological inhibition of fatty acid beta-oxidation (FAO) on acute heart allograft survival.*Methods: We used a heterotopic Balb/c donor…
  • 2021 American Transplant Congress

    The Development and Characterization of AT1501, an Anti CD40L Antibody Lacking Fc Effector Function

    S. Perrin1, A. Gill2, C. Gill2, F. Vieira2, K. Thompson2, J. Lincecum2, B. Jiang2

    1Novus Therapeutics, Irvine, CA, 2ALS Therapy Development Institute, Cambridge, MA

    *Purpose: CD40L is a costimulatory type II membrane receptor for CD40. The binding of CD40L on T helper cells to CD40 on antigen presenting cells…
  • 2021 American Transplant Congress

    Taurodeoxycholic Acid and L-valine Ameliorate Macrophage Driven Alloimmunity in Obese Transplant Recipients

    M. Quante1, J. Iske1, D. Perkins2, M. Alegre3, H. Zhou1, A. Elkhal1, S. G. Tullius1

    1Department of Surgery, Brigham and Women's Hospital, Boston, MA, 2University of Illinois at Chicago, Chicago, IL, 3Department of Medicine, The University of Chicago, Chicago, IL

    *Purpose: Obesity initiates a chronic inflammatory network linked to more frequent perioperative complications and increased acute rejection rates after organ transplantation. Clinically, morbidly obese transplant…
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