2021 American Transplant Congress
Epigenetic & Functional Changes Associated with Alloreactive Memory CD8 T Cell Subsets in Liver Transplant Patients
1University of Pittsburgh Medical Center, Pittsburgh, PA, 2UPMC, Pittsburgh, PA
*Purpose: Donor-specific allo-reactive memory CD8 T cells play a pivotal role in allo-immunity and represent a major hurdle against tolerance induction in solid organ transplantation.…2021 American Transplant Congress
Selective Bcl-2 Inhibition for Induction of Mixed Chimerism and Renal Allograft Tolerance without Myelosupression
*Purpose: Immunologic tolerance of renal allograft has been achieved by induction of hematopoietic chimerism through donor bone marrow transplantation (DBMT). The myeloablative and genetic toxicity…2021 American Transplant Congress
T-Cell Responses in Solid Organ Transplant Recipients with SARS-CoV-2 Infection
University Health Network, Toronto, ON, Canada
*Purpose: Preliminary data suggest solid organ transplant (SOT) recipients may be at high-risk for developing severe COVID-19. This may be due in part to alterations…2021 American Transplant Congress
Invariant Nkt Cells Promote Expansion of Novel Cxcr3+Ccr4+Cd8+ T Cells in the Liver Following Allogeneic Hepatocyte Transplant
*Purpose: Hepatocyte transplantation represents a treatment for metabolic diseases and a bridge therapy to whole organ transplant but is limited in part by cell immunogenicity.…2021 American Transplant Congress
Donor T and NK Cells with a Special Tissue-Resident Memory Phenotype Migrate Into the Periphery of Lung Transplant Recipients – A Potential Feature for Tolerance Development
*Purpose: After lung transplantation (LuTx), a transient chimerism of donor cells exists in the blood of recipients due to the migration of lymphocytes from the…2021 American Transplant Congress
TIGIT Agonism Improves Immunosuppression of Cd8 T Cells by Ctla-4ig in a Treg Dependent Manner
Emory University Transplant Center, Emory University, Atlanta, GA
*Purpose: Costimulation blockade therapeutics for immunosuppression in transplant are less toxic than calcineurin inhibitors offering improved graft longevity and patient quality of life, but belatacept-resistant…2021 American Transplant Congress
Suppression of T Cell Proliferation by Activated Nonhuman Primate B Cells
Massachusetts General Hospital, Boston, MA
*Purpose: We previously generated Toll-like receptor (TLR)-activated B cells in rodent settings. These B cells can suppress T cell proliferation via in vitro mixed lymphocytes…2021 American Transplant Congress
Immunosuppression is Not Associated with High-risk Immunologic Parameters in Transplant Recipients with the Sars-cov2 Virus
Medicine/Surgery, Columbia University Medical Center, New York, NY
*Purpose: The factors associated with severe COVID-19 disease in transplant patients are poorly understood. Despite concern that patients with weakened immune responses have increased risk…2021 American Transplant Congress
A Mechanistic Evaluation to Guide the Optimal Immunosuppression Adjustment Strategy in Transplant Patients with COVID-19
*Purpose: The optimal management of immunosuppression in transplant patients infected with COVID-19 is unknown. Reduction in calcineurin inhibitors or antimetabolite doses is often performed in…2021 American Transplant Congress
Enhancement of Regulatory T Cell Therapies by Biomimetic Nanofiber Matrices on Single Cells
*Purpose: Here we report a new method to create an artificial and biodegradable matrix of biomimetic nanofibers on single cells with the goal of enhancing…
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