ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "T cell activation"

  • 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…
  • 2021 American Transplant Congress

    Polyfunctional T-cell Impairment to Sars-cov-2 Coronavirus in Solid Organ Transplant Recipients with Acute Covid-19 Infection

    A. Favà1, L. Donadeu2, V. Pernin3, M. Meneghini1, E. Crespo2, N. Sabé4, L. Lladó5, J. Gonzalez-Costello6, O. Thaunat7, O. Bestard1

    1Kidney Transplantation Unit, Bellvitge University Hospital- IDIBELL, L'Hospitalet de Llobregat. Barcelona, Spain, 2Experimental Nephrology Laboratory, IDIBELL, Bellvitge University Hospital, L'Hospitalet de Llobregat. Barcelona, Spain, 3Kidney Transplant Unit, Hospital de Montpellier, Montpellier, France, 4Infectious Disease Department, Bellvitge University Hospital, L'Hospitalet de Llobregat. Barcelona, Spain, 5Liver Transplant Unit, Bellvitge University Hospital, L'Hospitalet de Llobregat. Barcelona, Spain, 6Heart Transplantation Unit, Bellvitge University Hospital, L'Hospitalet de Llobregat. Barcelona, Spain, 7Department of Transplantation, Edouard Herriot Hospital Lyon, Lyon, France

    *Purpose: The emerged COVID-19 pandemic caused by SARS-CoV-2 has paralyzed the world, due to its high infectivity and fatal outcomes, especially among more vulnerable individuals.…
  • 2021 American Transplant Congress

    IL-10 Signaling in T Cells Modulates Costimulation-independent Activation and is Essential for Transplant Tolerance Induction

    M. Iglesias Lozano1, D. Bibicheff1, M. Chicco2, A. Komin1, G. Brandacher1, G. Raimondi1

    1Plastic Surgery, Johns Hopkins University, Baltimore, MD, 2Frimley Health NHS Foundation Trust, London, United Kingdom

    *Purpose: Costimulation blockade (CoB)-based immunotherapy remains a very promising approach for better management of transplant recipients. Understanding the mechanisms that impact the efficacy of CoB…
  • 2021 American Transplant Congress

    Role of Baseline PD-1 Checkpoint Inhibitor Pathway Expression in Bridge to Liver Transplant Hepatocellular Carcinoma

    K. Nunez, T. Sandow, M. Hibino, A. Cohen, P. Thevenot

    Ochsner Health, New Orleans, LA

    *Purpose: Response to first line liver-directed therapy (LDT) in hepatocellular carcinoma (HCC) has important implications in both bridge to transplant (BTT) success as well as…
  • 2021 American Transplant Congress

    Evaluation of the Differentiation Program of Endogenous Antigen-specific CD8+T Cells Following Transplantation

    S. M. Krummey1, K. Tong2, M. L. Ford2

    1Pathology, Johns Hopkins University, Baltimore, MD, 2Surgery, Emory Transplant Center, Atlanta, GA

    *Purpose: Despite advances in the survival of transplanted organs, acute T cell mediated rejection remains a significant clinical problem with few effective or targeted treatments.…
  • 2021 American Transplant Congress

    T-Cell Responses in Solid Organ Transplant Recipients with SARS-CoV-2 Infection

    V. H. Ferreira, T. M. Marinelli, T. Ku, M. Ierullo, B. Majchrzak-Kita, I. Bahinskaya, N. Pinzon, A. Humar, D. Kumar

    University Health Network, Toronto, ON, Canada

    *Purpose: Preliminary data suggest solid organ transplant (SOT) recipients may be at high-risk for developing severe COVID-19. This may be due in part to alterations…
  • 2021 American Transplant Congress

    P2X7 Receptor Activity Mediates Th17-Specific Self- and Alloreactivity in Non-Human Primates

    C. Little, J. Sullivan, W. Burlingham, D. Kaufman

    Department of Surgery, University of Wisconsin, Madison, WI

    *Purpose: The broadly expressed ATP-binding purinergic receptor, P2X7 (P2X7R) is involved in the Th17 mediated cellular immune response to allo- and select self-antigens (Collagen type…
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