ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "Mice, knockout"

  • 2019 American Transplant Congress

    Lymphotoxin Beta Receptor Determines Lymph Node Structure for Treg Migration and Suppression of Graft Rejection

    V. Saxena, W. Piao, L. Li, C. M. Paluskievicz, Y. Xiong, T. Simon, J. S. Bromberg

    U Maryland, Baltimore, MD

    *Purpose: Lymphotoxin beta receptor (LTβR) mediated signaling in lymphatic endothelium cells (LEC) is important for migration of regulatory T cells (Treg) to afferent lymphatic vessels…
  • 2019 American Transplant Congress

    Treg Lymphotoxin and Lymphatic Endothelial Cell Lymphotoxin Receptor Interactions Are Required for Treg Stability and Allograft Protection

    V. Saxena, W. Piao, L. Li, C. M. Palusckievicz, Y. Xiong, T. Simon, J. S. Bromberg

    U Maryland, Baltimore, MD

    *Purpose: Regulatory T cells (Treg) restrain allograft rejection through suppressor functions that are dependent upon expression of the transcription factor Foxp3, their proper migration, and…
  • 2019 American Transplant Congress

    S1PR1 and S1PR4 Regulate T Cell Migration into Afferent Lymphatics

    Y. Xiong1, W. Piao1, C. Brinkman1, L. Li1, J. Kulinski2, A. Olivera2, A. Cartier3, T. Hla4, K. Hippen5, B. Blazar6, S. Schwab7, J. Bromberg1

    1Surgery, UMB, Baltimore, MD, 2NIH, Bethesda, MD, 3Boston Children's hospital, Boston, MA, 4Boston Children's, Boston, MA, 5U.Minnesota, Minneapolis, MN, 6U.Minnesota, Minneapolis, MD, 7NYU, NY, NY

    *Purpose: T cells utilize S1PR1 to traffic from thymus into blood, and lymph nodes (LN) into efferent lymphatics. Whether T cell S1PR1 and S1PR4 regulate…
  • 2019 American Transplant Congress

    Depleting Laminin α5 in Lymph Node Stromal Cells Promotes Transplant Tolerance

    L. Li, M. Shirkey, W. Piao, Y. Xiong, V. Saxena, T. Zhang, N. Toney, C. Paluskievicz, J. S. Bromberg

    Surgery, U. Maryland, Baltimore, Baltimore, MD

    *Purpose: Expression of stromal laminin α5β1γ1 (511) in lymph nodes (LN) is associated with immunity, while laminin α4β1γ1 (411) is associated with tolerance. The laminins…
  • 2019 American Transplant Congress

    Decay Accelerating Factor (DAF) Regulates Germinal Center B-cell and Alloantibody Formation

    A. Cumpelik1, G. Varano2, D. Heja1, D. Homann3, S. Lira4, D. Dominguez-Sola2, P. S. Heeger1

    1Nephrology, Mount Sinai School of Medicine, New York, NY, 2Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, 3Medicine, Endocrinology, Diabetes and Bone Disease, Mount Sinai School of Medicine, New York, NY, 4Clinical Immunology, Mount Sinai School of Medicine, New York, NY

    *Purpose: High affinity IgG antibodies including alloantibodies result from germinal center (GC) reactions in which somatic hypermutation and positive selection cause affinity maturation. When we…
  • 2019 American Transplant Congress

    B Cell-Specific IRE1a Deficiency Protects Renal Allografts from Rejection via Inhibition of Donor-Specific Antibodies and Induction of B Regulatory Cells

    L. Qiu1, J. Wang1, X. Yeap1, D. Fang2, Z. J. Zhang1

    1Comprehensive Transplant Center, Department of Surgery, Northwestern University, Chicago, IL, 2Department of Pathology, Northwestern University, Chicago, IL

    *Purpose: Despite the progress in immunosuppressive regimens, antibody-mediated rejection remains a major contributor to renal allograft loss in recipients with donor-specific antibodies (DSA). IRE1a, an…
  • 2019 American Transplant Congress

    Lymphotoxin Beta Receptor in Lymphatic Endothelial Cells Regulates Treg Migration and Allograft Protection

    V. Saxena, W. Piao, L. Li, C. M. Paluskievicz, Y. Xiong, T. Simon, J. S. Bromberg

    U Maryland, Baltimore, MD

    *Purpose: Lymphotoxin beta receptor (LTβR) mediated signaling in lymphatic endothelium cells (LEC) is important for migration of regulatory T cells (Treg) to afferent lymphatic vessels…
  • 2019 American Transplant Congress

    Laminin α5 Deficiency in Lymph Node Stromal Cells Promotes Treg Migration and Allograft Survival

    L. Li, M. Shirkey, W. Piao, Y. Xiong, V. Saxena, T. Zhang, T. Simon, N. Toney, C. Paluskievicz, J. S. Bromberg

    Surgery, U. Maryland, Baltimore, Baltimore, MD

    *Purpose: Laminins are a family of heterotrimeric glycoproteins, and lymph node (LN) stromal laminins α4 and α5 modulate suppression and immunity, respectively. We created laminin…
  • 2019 American Transplant Congress

    Donor Renal Macrophages in Post-Transplant Ischemia/Reperfusion Injury (IRI): Role of IL-1R8 in Modulating Fate, Phenotype and Function

    S. Aiello, P. Rodriguez, N. Azzollini, F. Casiraghi, M. Noris, G. Remuzzi, A. Benigni

    Mario Negri Institute, Ranica, Italy

    *Purpose: Post-transplant (tx) IRI activates TLR/IL-1R on tissue resident leukocytes initiating innate immune response. We studied how donor renal resident macrophages (rMF) respond to post-tx…
  • 2019 American Transplant Congress

    Graft TIM4 Deficiency Protects Liver from Ischemia Reperfusion Injury: From Mouse to Human

    S. Kageyama1, K. Kadono1, H. Hirao1, K. Nakamura1, T. Ito2, K. J. Dery1, D. Oncel1, B. Ke1, F. M. Kaldas2, R. W. Busuttil2, J. W. Kupiec-Weglinski1

    1Surgery, Dumont-UCLA Transplant Center, Los Angeles, CA, 2Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA

    *Purpose: Liver ischemia-reperfusion injury (IRI) is a major risk factor for early graft dysfunction and rejection in orthotopic liver transplantation (OLT). We and others have…
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