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
The Inhibitory Effect of Plasma on Activation of Lymphocytes from Kidney Transplants is Significantly More Severe in Tacrolimus Based Regimen: What Implications for Plasma Exchange Role in Anti-Rejection Therapy?
Background:Reduction of lymphocyte proliferation by human plasma has been previously reported. Reduced activation of lymphocytes of patients on immunosuppressive drugs is well documented. However, trial…2018 American Transplant Congress
Sensing T Cell Killing Activity with Granzyme B Activity Probes
Purpose: We developed activity-based probes that sense Granzyme B (GzmB) activity during alloreactive T cell killing of donor cellsMethods: FITC-labelled GzmB substrate (IEFDSG) was synthesized…2018 American Transplant Congress
B-Cell Depletion with Rituximab Exacerbates Anti-Donor CD4+ T-Cell Responses in Patients with Donor-Specific Anti-Human Leukocyte Antigen Antibodies
Gastroenterological and Transplant Surgery, Hiroshima University, Hiroshima, Japan.
Background: It has been reported that preformed donor-specific anti-human leukocyte antigen antibodies (DSAs) were associated with poor graft outcomes in kidney transplant recipients. To eliminate…2018 American Transplant Congress
Donor T Cells Undermine the Graft-Protective Effect of DST Plus Anti-CD154
Plastic Surgery, Johns Hopkins University, Baltimore, MD.
Costimulation blockade (CoB) regimens are a promising immunomodulatory strategy to prevent transplant rejection. However, their efficacy is affected by multiple factors, including still unknown ones.…2018 American Transplant Congress
Galangin Promotes Treg Development and Function
Introduction: FoxP3+ Treg cells are central in controlling immune responses and transplant tolerance. CD73 (ecto-5'-nucleotidase), which serves to convert AMP to adenosine, is essential for…2018 American Transplant Congress
Targeting Histone Deacetylase in Renal Tubular Epithelial Cells Inhibits Amplification of TH1 Cell-Mediated Inflammation
Inje University, Busan, Korea.
Background: Objective: More studies are focusing on renal tubular epithelial cells (RTECs) as a new target to restore inflammatory environment as clarifying their immune regulatory…2018 American Transplant Congress
Lymph Node Stromal Laminins Modulate the Dynamic Balance of the Treg/Th17 Axis
University of Maryland, Baltimore, MD.
Background: Tolerance and immunity are associated with differential expression of lymph node (LN) stromal laminins α4β1γ1 (411) and α5β1γ1 (511), respectively, which determine how alloreactive…2018 American Transplant Congress
Age-Specific Effects of Tacrolimus Are Associated to Specific Changes of T Cell Metabolism
Transplant Surgery Research Lab, Brigham and Women's Hospital, Boston.
Background: Energy metabolism of immune cells has been identified as critical in driving alloimmunity. While metabolic capacities change with aging, aspects linking age, immunosuppression, and…2018 American Transplant Congress
In Vivo Imaging and Function of Renal Tertiary Lymphoid Organs
Starzl Transplantation Institute, Pittsburgh.
Tertiary lymphoid organs (TLOs) are ectopic lymphoid structures that arise in non-lymphoid tissues in the setting of chronic inflammation such as organ transplantation. The function…
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