2018 American Transplant Congress
OX40 Costimulation Prevents Induction of Foxp3+ Tregs through Upregulation of Novel Repressors of Foxp3 Gene Expression
Foxp3+ Tregs are essential for the induction of transplant tolerance and OX40 costimulation is known to break transplant tolerance. The exact mechanism of OX40 in…2018 American Transplant Congress
Circulating Follicular Helper T Cells (cTfh) in Renal Transplantation: Utility as Rejection Biomarker
Introduction: Antibody (Ab) mediated rejection is responsible for 30-50% of renal graft failures. Follicular helper T cells (Tfh) are required for the differentiation of B…2018 American Transplant Congress
Recipient Conditioning Results in IL-33 Support of Potent Th1 Alloimmune Responses after CD4+ T Cells Upregulate ST2 during Lymphopenia Induced Proliferation
Purpose: IL-33 is typically associated with support of Th2 and Treg responses. Yet, recipient conditioning before allogeneic hematopoietic cell transplantation (alloHCT) releases IL-33 to promote…2018 American Transplant Congress
Immunologic Impact of Tocilizumab Treatment in Kidney Transplant Recipients with Allograft Inflammation
Background: Proinflammatory cytokine IL-6 increases effector/memory T-cells, induces Th17 cells and prevents the induction of Tregs. IL-6 expression in kidney biopsies is elevated during acute…2017 American Transplant Congress
Differential Expression of Long Noncoding RNAs During Cardiac Allograft Rejection.
While transplant rejection is the major restriction in successful long lasting graft survival, induction of sustainable immune tolerance against transplant is one of the major…2017 American Transplant Congress
IL-21R Antagonist Inhibits Differentiation of B Cells Towards Plasmablasts upon Alloantigen Stimulation.
Background: Antigen-specific antibody responses rely on IL-21+ T follicular helper (Tfh) cells that regulate B cell differentiation. In transplantation, a large proportion of renal allograft…2017 American Transplant Congress
Activated Th1 and Th17 cTFH Phenotype Correlates with DSA Production in Kidney Transplant Recipients.
University of Pittsburgh, Starzl Transplantation Institute, Pittsburgh
Donor-specific anti-HLA antibodies (DSA) represent an important biomarker for acute rejection and are a major cause of long-term graft failure after kidney transplantation (KTx). 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
Non-Human Primate Auto-Immune Responses to Col V, Kα-1Tubulin and Vimentin Are P2X7R Dependent.
1Surgery, University of Wisconsin, Madison, WI; 2Medicine, University of Wisconsin, Madison, WI
Background: Auto-immune responses to Collagen type V (ColV) have been associated with coronary artery disease and lung or heart transplant rejection in humans and murine…2017 American Transplant Congress
Blood Tfh Cells Exhibit Impaired B Cell Help in Operationally Tolerant Patients.
Introduction: Operationally tolerant (TOL) patients display a defect of B cell differentiation, with a deficiency in circulating plasma cells secreting antibodies, which could partly contribute…
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