2016 American Transplant Congress
Blockade of the ASC Coreceptor Enhances Hematopoietic Stem Cell Engraftment.
Purpose: HSC engraftment is essential for successful bone marrow transplantation, and successful HSC engraftment allows for induction of tolerance to solid organ allografts. Engrafted HSCs…2016 American Transplant Congress
Tissue Priming of Plasmacytoid Dendritic Cells Enhances Their Phagocytosis and Lowers the Threshold for Subsequent Toll-Like Receptor 7/9 Activation.
Plasmacytoid dendritic cells (pDC) have a pivotal role in clearing viral infections, and can regulate tolerance or immunity depending on their activation status. We have…2016 American Transplant Congress
A Single Histone/protein Acetyltransferase, Tip60, Is Absolutely Essential for Treg Survival and Function, and Its Inhibition Abrogates Induction of Treg-Dependent Allograft Tolerance.
1CHOP & UPenn, Philadelphia, PA; 2Boston University, Boston, MA.
Based on in vitro studies and limited in vivo data from patients with mutations in FOXP3 or animals with depletion of circulating Tregs, Tregs are…2016 American Transplant Congress
Complement Receptor C5aR2 Deletion in Kidney Transplantation in Mice Attenuates Renal Damage.
ObjectiveThe complement receptors C5aR1 and C5aR2 serve distinct roles in immune regulation. In kidney transplantation the early post-implant ischemia reperfusion injury (IRI) causes rapid complement…2016 American Transplant Congress
Dendritic Cells and Damage-Associated Molecular Patterns in Aging.
Recently, it has been shown that Dendritic Cells (DCs) of old organs accelerate graft rejection by orchestrating IL-17A-mediated T cell responses. Moreover, cell-free DNA has…2016 American Transplant Congress
Genetic TIM-4 Deletion Promotes Immunoregulatory Tissue-Resident Macrophage Survival and Lowers the Barrier to Cardiac Allograft Tolerance.
We report that the CD169+TIM-4+ tissue-resident macrophage (TRM) subset is the dominant tissue-resident leukocyte in skin, heart, and pancreas from C57BL/6 mice and skin and…2016 American Transplant Congress
A P2X7R Mutation with Hypermetabolic T Cells, Th1/Th17 Skewing and Reduced Cardiac Allograft Survival.
Background. The purinergic receptor-7 (P2X7R), primarily expressed on lymphocytes, senses ATP released extracellularly during cell damage and regulates T cell activation.Methods. In 640 heart transplant…2016 American Transplant Congress
Designing a Novel Highly Selective Immunoproteasome Inhibitor That Promotes Longterm Heart Allograft Acceptance While Inducing Immune Cell Exhaustion, Treg Induction and Memory Cell Suppression.
The constitutive Proteasomes (c-20S) are ubiquitously expressed cellular proteases that degrade polyubiquitinated proteins and regulate cell functions. However, immunoproteasomes (IP or i-20S) are primarily expressed…2016 American Transplant Congress
Absence of Receptors for C3a or C5a Prevent Alloreactive CD8 T Effector Cell (Teff) Expansion but Differentially Impact Memory (Tmem) Persistence Posttransplantation.
As Tmem are known barriers to transplant survival and tolerance in animals and human transplant recipients, understanding factors that drive the formation and survival of…2015 American Transplant Congress
Anti-CD122 + Costimulation Blockade Prolongs Allograft Survival
1Emory Transplant Center, Emory University, Atlanta, GA; 2JN Bioscience, Mountanview, CA.
Introduction: Effective T cell activation and effector function requires (1) cognate antigen recognition (2) appropriate costimulation and (3) successful cytokine signaling. Recently approved strategies to…
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