2015 American Transplant Congress
Ex Vivo Expansion With Rapamycin Enhances the Suppressive Function of Regulatory T Cells (Tregs) Isolated from Pediatric Thymus
INTRODUCTION: Treg-based cellular therapy to suppress graft-directed immunity could reduce the need for life-long immunosuppressive drugs. Challenges include isolation and expansion of pure Tregs to…2015 American Transplant Congress
Recipient IL-33 Promotes Type 1 Alloimmunity and Lethal Acute GVHD Following alloHCT
Background: Graft-versus-host disease (GVHD) is a common complication of allogeneic (allo) hematopoietic cell transplantation (HCT) that limits its widespread application for the induction of transplant…2015 American Transplant Congress
Eomesodermin Expression By Alloreactive Non-Human Primate CD8+ Memory T Cells: Influence of CTLA4Ig and Regulatory DC Infusion in Renal Allograft Recipients
Background:Memory T cells (Tmem), particularly those resistant to costimulation blockade (CoSB), are considered a major barrier to transplant tolerance. The T-box transcription factor Eomesodermin (Eomes)…2015 American Transplant Congress
Lymphatic Endothelium Uniquely Enhances T Cell Migration to S1P
University of Maryland, Baltimore, MD.
Introduction: Sphingosine-1-phosphate (S1P) is a signaling sphingolipid that regulates cell egress from lymphoid and non-lymphoid tissues. While S1P has been described as a chemoattractant, its…2015 American Transplant Congress
Iron Deficiency Impairs Regulatory T Cell Induction
In a recent clinical trial of immunosuppression withdrawal in adult liver transplant recipients, operational tolerance was associated with development of a transient lymphocyte infiltration rich…2015 American Transplant Congress
Effects of Toll Like Receptor (TLR) Signaling on Murine Alloimmunity Are Modulated by Immune Cell Derived Complement
TLR signals prevent CD40L-blockade (MR1) induced murine transplant tolerance but mechanisms are incompletely understood. Based on previous findings that immune cell derived complement activation products…2015 American Transplant Congress
A Primary Cytomegalovirus Infection Post-Transplantation Has a Significant Impact on Circulating T Cells and Renal Allograft Function
Study's purpose: Cytomegalovirus (CMV)-infection may profoundly affect the peripheral T-cell compartment and is associated with T-cell ageing and generation of cytotoxic CD4+CD28null T cells. We…2015 American Transplant Congress
Absence of Nucleotide-Binding Oligomerization Domain-Containing Protein 1 and 2 Modifies Adaptive Immune Responses
Background:The NOD family of intracellular pattern recognition receptors (PRRs) plays a key role in immune responses to microbial and danger signals. This family of proteins…2015 American Transplant Congress
Tracking T Cell Fate After Antithymocyte Globulin (ATG) Immunotherapy in Infant Heart Transplant (HTx) Patients
Polyclonal T cell depletion with ATG is a common induction therapy in adult and pediatric transplantation. In adults, T cell recovery post-ATG involves homeostatic proliferation…2015 American Transplant Congress
Th17-Mediated Alloimmune Responses Play a Key Role in Intestinal Allograft Rejection in Humans
The Georgetown Transplant Institute, Washington, DC.
The majority of transplanted intestines still falls victim to allograft enteropathy, the underlying mechanisms of which are poorly understood. The purpose of this study was…
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