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American Transplant Congress abstracts

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Articles tagged "T cell activation"

  • 2016 American Transplant Congress

    miR-21 in Chronic Allograft Vasculopathy.

    V. Usuelli,1 M. Ben Nasr,1,2 F. D'Addio,1,2 L. Kaifeng,2 L. Borgese,3 L. Potena,3 A. Solini,4 C. Rossi,4 A. Secchi,1 D. Corradi,5 N. Chau,6 P. Fiorina.1,2

    1Ospedale San Raffaele, Milano, Italy; 2Boston Children's Hospital, Boston; 3University of Bologna, Bologna, Italy; 4University of Pisa, Pisa, Italy; 5University of Parma, Parma, Italy; 6Regulus Therapeutics Inc, San Diego.

    Background. Heart transplantation is the most effective therapy to prolong life expectancy in patients with end-stage heart failure. However, despite much progress in the field,…
  • 2016 American Transplant Congress

    IL2 and IL-15 Rescue TEMRA CD8 T Cells from Mitochondrial Dysfunction Associated Senescence Through a p38MAPK Dependent Pathway and Foster Their Pathogenic Potential.

    G. Tilly,1,2 M. Yap,1,2 M. Giral,1,2,3 C. Pecqueur,4 S. Brouard,1,3 N. Degauque.1,3

    1UMR1064, INSERM, Nantes, France; 2Université de Nantes, Nantes, France; 3ITUN, CHU de Nantes, Nantes, France; 4UMR892, INSERM, Nantes, France.

    Background & Study Aim. We recently showed that an accumulation of highly differentiated TEMRA CD8 T cells in kidney transplant recipients with a stable graft…
  • 2016 American Transplant Congress

    Belatacept Does Not Inhibit Plasmablast Formation Supported by Follicular T Helper Cells, but Favors the Development of Transitional Regulatory B Cells in Kidney Transplant Patients.

    G. de Graav, D. Hesselink, M. Dieterich, R. Kraaijeveld, W. Weimar, C. Baan.

    Internal Medicine, Section Transplantation and Nephrology, Erasmus University Medical Center, Rotterdam, South Holland, Netherlands.

    Since the costimulatory inhibitor belatacept effectively blocks T-B cell interaction in animal transplant models, we studied the functional follicular T helper cells (TFH)-B cell interaction…
  • 2016 American Transplant Congress

    Single Cell Profiling of Th9 Cells Allows Identification of Functionally Different Subsets.

    K. Stanko, J. Schumann, K. Vogt, S. Schlickeiser, C. Appelt, B. Sawitzki.

    Institute of Medical Immunology, Charite University Medicine, Berlin, Germany.

    T helper type 9 (Th9) cells represent a distinct subset of CD4+ effector T cells that is characterized by high secretion of interleukin (IL)-9. Protective…
  • 2016 American Transplant Congress

    Lymph Node Stromal Laminins Differentially Regulate T Cell Immunity and Tolerance.

    T. Simon, J. Bromberg.

    University of Maryland, Baltimore, MD.

    Background:Our recent work demonstrated that laminins α4β1γ1 and α5β1γ1, components of the lymph node (LN) stroma, are differentially regulated. Tolerance is associated with relatively higher…
  • 2016 American Transplant Congress

    Kidney Allotransplantation Induces the Differentiation of Antigen-Experienced CD8 T Cells with Enhanced Metabolic Profiles.

    G. Tilly,1,2 M. Yap,1,2 M. Giral,1,2,3 S. Brouard,1,3 C. Pecqueur,4 N. Degauque.1,3

    1UMR 1064, INSERM, Nantes, France; 2Université de Nantes, Nantes, France; 3ITUN, CHU de Nantes, Nantes, France; 4UMR 892, INSERM, Nantes, France.

    Background. Naïve and memory CD8 T cells have been shown to exhibit different metabolic profiles, especially upon antigen stimulation. However, it is unknown whether the…
  • 2016 American Transplant Congress

    Role of NRP1 in CD4+ T Cell Allo-Activation.

    E. Lee, H. Kim, G. Demirci.

    Department of Surgery, Boston Children's Hospital, Boston, MA.

    Introduction: Neuropilin-1 (NRP1) is a transmembrane glycoprotein that functions as a co-receptor for class III/IV semaphorins, VEGF, and several other growth factors. NRP1 has been…
  • 2016 American Transplant Congress

    Myeloid-Derived Suppressor Cells (MDSC) Accumulate in Intestinal Transplant (IT) Patients.

    S. Okano,1 K. Hashimoto,1 K. Abu-Elmagd,1 J. Fung,1 D. Kish,2 K. Keslar,2 B. Min,2 R. Fairchild,2 C. Miller.1

    1Transplant Center, Cleveland Clinic, Cleveland, OH; 2Department of Immunology, Lerner Reserch Center, Cleveland Clinic, Cleveland, OH.

    [Background] IT is an efficacious treatment for chronic intestinal failure. Recent advance of immunosuppressive regimens have decreased the rejection rate and improved patient survival. The…
  • 2016 American Transplant Congress

    Profiling Metabolic Differences Between Graft- vs. Pathogen-Elicited CD8+ T Cell Responses.

    A. Karp, M. Wagener, J. Robertson, M. Ford.

    Emory University, Atlanta.

    The challenge of immune modulation in transplantation is to inhibit pathologic alloreactivity while minimizing off-target toxicities and preserving protective immunity. Data have emerged demonstrating the…
  • 2016 American Transplant Congress

    Activation of Alloreactive T Cells by Allogeneic Exosomes and Cells Cross-Dressed with Allogeneic MHC Molecules.

    M. Babiker-Mohamed, J. Marino, P. Crosby, G. Benichou.

    Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital & Harvard Medical School, Boston, MA.

    Our recent studies have documented the presence of high numbers of recipient antigen presenting cells (APCs) displaying donor MHC molecules (cross-dressed) on their surface after…
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