2022 American Transplant Congress
Identification of Highly-Effective Donor-Reactive CD4+CD8αlo T Cells in CTLA4Ig-Treated Renal Allograft Recipient Monkeys
*Purpose: Potent CD4+CD8αlo effector T cells have been reported in transplant (tx) patients. . We evaluated the incidence and function of CD4+CD8αloT cells in renal…2022 American Transplant Congress
Intrinsic DEPTOR Activity Modulates Treg Subset Differentiation
*Purpose: We have previously reported that DEPTOR activity within CD4+Foxp3+ Tregs increases immunomodulation following transplantation. DEPTOR functions by both stabilization of Foxp3 expression through epigenetic…2022 American Transplant Congress
Bystander Suppression: Enhancing the Power of Ex Vivo Expanded Antigen Specific Regulatory Cell Lines
*Purpose: The potential of T regulatory cell (Treg) based therapies in transplantation has been demonstrated in various preclinical models. Multiple clinical trials are currently undergoing…2022 American Transplant Congress
TEMRA CD8 T Cells from Kidney Transplant Recipients Exhibit Enhanced Purinergic P2x4 Receptor-Dependent Proinflammatory and Migratory Responses
*Purpose: Whereas the role of effector memory and TEMRA CD8 in allotransplantation has been clearly evidenced and particularly the direct correlation between intragraft infiltrating CD8…2022 American Transplant Congress
CD8+ T Cells Differentiate into a CD43-expressing Effector Population After Transplantation
Department of Pathology, Johns Hopkins University, Baltimore, MD
*Purpose: Despite a significantly reduced toxicity profile and improved long-term graft function versus calcineurin inhibitors, widespread adaptation of belatacept (CTLA-4 Ig) has been limited due…2022 American Transplant Congress
CD40 Expressed by FRC Regulates Lymph Node Structure and Function
*Purpose: Fibroblastic reticular cells (FRC) support lymph node (LN) structure and can regulate T cell function through the CD40-CD40L pathway. Our previous work showed that…2022 American Transplant Congress
Delivery of Extracellular Matrix Targeted Regulatory T Cells by Novel Nanofiber Coatings for Transplantation Therapies
*Purpose: Regulatory CD4+CD25+FOXP3+ T cells (Tregs) have been shown to induce tolerance in transplantation models and can mitigate transplant rejection or injury following ischemic reperfusion…2022 American Transplant Congress
PD-1 Expression on CD8+ T Cells Contributes to the Establishment of Mixed Chimerism-Based Operational Tolerance
Surgery, University of Wisconsin, Madison, WI
*Purpose: PD-1 is a T cell co-inhibitory molecule involved in T cell exhaustion and antigen specific hypo-reactivity. Given the role of PD-1 signaling in the…2022 American Transplant Congress
Synergistic Effect of CXCR5+CD8+ TAb-supp Cell Adoptive Cell Therapy and mTOR Inhibition (but Not Calcineurin Inhibition) in Suppressing Alloantibody Following Kidney Transplant in Mice
*Purpose: We have reported that CXCR5+CD8+TAb-supp cells mediate suppression of alloantibody (alloAb) production and prolong graft survival in both hepatocellular and kidney transplant (KTx) mouse…2022 American Transplant Congress
SARS-CoV-2 Infection is Associated with Greater Neutralizing Antibody Response Compared to Three Doses of Mrna-1273 Vaccine in Solid Organ Transplant Recipients
University Health Network, Toronto, ON, Canada
*Purpose: Prior studies suggest that two doses of mRNA vaccine in SOTR may result in lower antibody and T-cell responses relative to levels seen following…
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