2018 American Transplant Congress
CD4 T Cells Require Both S1PR1 and S1PR4 for Afferent Lymphatic Migration
1UMB, MD; 2NIH, MD; 3Boston Children's Hospital, MA; 4NYU, NY; 5U. Minnesota, MN.
Introduction: Sphingosine 1-phospate (S1P) receptor 1 (S1PR1) drives T cell migration from thymus into blood, and lymph nodes (LN) into efferent lymphatics. Whether S1PR1 and…2018 American Transplant Congress
Lymphatic Endothelium Requires S1PR2 for T Cell Transendothelial Migration
1UMB, MD; 2NIH, MD; 3Boston Children's Hospital, MA; 4NYU, NY; 5U. Minnesota, MN.
Introduction: Sphingosine 1-phosphate (S1P) receptors 1 (S1PR1) and S1PR2 are highly expressed by lymphatic endothelial cells (LEC), while T cells express S1PR1 and S1PR4. S1P…2018 American Transplant Congress
Involvement of PD-L1 Upregulation in Anti-A/B Antibody-Induced Graft Accommodation: Reduction of CD4 T Cell Allo-Response against Graft HLA Class II DR
[Background] Antibodies against transplanted organs cause complement-independent graft injury, but there remain many unknown aspects of its mechanism, in particular its effect on allo-response to…2017 American Transplant Congress
Uptake of Extracellular Mitochondria Activates Human Endothelial Cells That Stimulate Alloreactive Effector T Cell Responses.
1Surgery, Duke University, Durham, NC; 2Immunology, Duke University, Durham, NC
Introduction: Vascular endothelial cells (VECs), the initial barrier between host immunity and donor allograft tissue, play a critical role in allograft rejection. We investigated the…2017 American Transplant Congress
The Treg/Th17 Axis: A Dynamic Balance Regulated by Stromal Laminins.
University of Maryland, Baltimore
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…2017 American Transplant Congress
Binding of Human Neutrophils to Activated Porcine Endothelium Is Mediated by E-Selectin.
1University of Maryland SOM, Baltimore; 2GlycoMimetics, Inc, Rockville; 3Revivicor, Inc, Blacksburg
Purpose: Shortage of transplantable human organs motivates research into alternatives, including xenotransplantation. When porcine lungs are perfused with human blood, a majority of human neutrophils…2016 American Transplant Congress
A Unique In Vitro Migration Model for Leukocyte Trans-Lymphatic Endothelial Migration.
1University of Maryland, Baltimore; 2University of Minnesota, Minneapolis.
Trans-endothelial migration (TEM) is an essential process for leukocyte circulation. While much is known about lymphocyte blood to tissue migration, far less is known about…2016 American Transplant Congress
Belatacept Immunotherapy Is Not Augmented by Blockade of Activated LFA-1 in a Nonhuman Primate Renal Transplant Model.
1Department of Surgery, Duke University Medical Center, Durham, NC; 2Emory University, Atlanta, GA.
Purpose: Belatacept specifically targets de novo alloimmune responses without off target side effects. However, resistant alloreactive memory T cells have complicated its use. LFA-1 therapy…2016 American Transplant Congress
Acute Rejection in Non-Human Primates Treated with Belatacept Is Mediated by a Unique CD8 Memory Subset.
Belatacept is a high affinity version of the fusion protein CTLA4-Ig that blocks CD28 mediated T cell costimulation, providing a more targeted/less toxic form of…2015 American Transplant Congress
VLA-4 Blockade Inhibits Endogenous Memory CD8 T Cell-Mediated Rejection of Cardiac Allografts
Endogenous memory CD8 T cells infiltrate cardiac allografts within 24 hours of reperfusion and are activated to proliferate and produce IFN-γ in response to donor…
American Transplant Congress abstracts