2017 American Transplant Congress
CD4 T Cell Migration Across Lymphatic Endothelium Is Enhanced by Sphingosine 1-Phosphate (S1P) and Differentially Regulated by S1P Receptors (S1PR).
1UMB, Baltimore; 2UM, Minneapolis
Introduction: S1PR1 drives T cells to migrate from thymus to blood, and from lymph node (LN) to efferent lymphatics. Whether S1PR1 or other S!PRs regulate…2017 American Transplant Congress
Costimulation Independent Acute Rejection Requires CD127 Signaling.
Department of Surgery, Emory University, Atlanta, GA
Clinical costimulation blockade with belatacept leads to improved survival and graft function. However, a subset of patients experience costimulation independent rejection. We identified a critical…2017 American Transplant Congress
Gene Editing of Keap1/Nrf2 in Human T Cells Using CRISPR-Cas9 to Improve Outcome from Ischemia Reperfusion Injury and Other T Cell Mediated Diseases.
Background: T lymphocytes are important mediators of ischemia reperfusion injury (IRI) during organ transplantation. Using genetically engineered mice, we demonstrated that augmentation of Nrf2 dependent…2017 American Transplant Congress
Immune Tolerance Monitoring in Renal Allograft Tolerance Induced by Transient Mixed Chimerism in Nonhuman Primates.
Center for Transplant Science, Massachusetts General Hospital, Boston, MA
Background: We have previously reported donor specific expansion of regulatory T cells (Tregs) in nonhuman primate (NHP) recipients which achieved renal allograft tolerance after induction…2017 American Transplant Congress
CCR7+CD8+ T Cell Suppresses Effector T Cell Related Allo-Immune Responses in Kidney Transplant Recipients.
Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea
Background; Previously reports showed that CCR7+CD8+ T cells have suppressive effect on various pathogenic immune cells. The aim of this study is to investigate the…2017 American Transplant Congress
Naïve and Interferon-gamma Activated Mesenchymal Stem Cells Differentially Affect Immune Responses In Vitro and In Vivo.
We have observed interferon gamma-treated autologous mesenchymal stem cells (MSC) to rapidly ex vivo expand CD3+CD4+CD25- T cells to >80% CD3+CD4+C25+FoxP3+ T regulatory cells with…2017 American Transplant Congress
Distinctive Molecular Features of Antibody-Mediated versus T-Cell Mediated Rejection in Facial Transplantation.
Brigham and Women's Hospital, Boston, MA
BackgroundA single case of antibody-mediated rejection in a clinical face transplant has been reported worldwide. The availability of repeated allograft biopsies from this patient allowed…2017 American Transplant Congress
A Regulatory T Cell (Treg)-Intrinsic Role for p27kip1 in Acquired Transplant Tolerance.
Pathology, The Children's Hospital of Philadelphia, Philadelphia, PA
We previously found that the cyclin-dependent kinase CDK2 phosphorylates the Treg transcription factor Foxp3, targeting it for proteolytic degradation. Treg with defective CDK2 activity express…2017 American Transplant Congress
Identification of Kidney Transplant Patients at Risk for Skin Cancer by Differentially Methylated Regions in T Cells.
Skin cancer, specifically cutaneous squamous cell carcinoma (cSCC), is the most often occurring malignancy in patients after organ transplantation, with an incidence of 100-200 times…2017 American Transplant Congress
Contribution of Donor versus Recipient T Cells in Face Transplant Rejection.
1Brigham and Women's Hospital, Boston; 2Broad Institute of MIT and Harvard, Cambridge
BackgroundSkin-containing transplants such as facial allografts contain resident populations of donor T cells. Although the role of T cells in acute rejection is well established,…
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