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
P2X7 Receptor Activity Mediates Th17-Specific Self- and Alloreactivity in Non-Human Primates
Department of Surgery, University of Wisconsin, Madison, WI
*Purpose: The broadly expressed ATP-binding purinergic receptor, P2X7 (P2X7R) is involved in the Th17 mediated cellular immune response to allo- and select self-antigens (Collagen type…2021 American Transplant Congress
Reassessing TCMR in Kidney Transplant Indication Biopsies: Emerging Evidence for Partial Exhaustion in Late TCMR
1Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, 2., ., AB, Canada
*Purpose: We rederived the MMDx rejection archetypes in an expanded set of 1679 kidney transplant biopsies to add power and potentially define heterogeneity in TCMR.…2021 American Transplant Congress
Establishing a Linear Program for the Development of Costimulation Resistant T-Cells
*Purpose: CD4+CD57+PD1-T-cells are primed effectors capable of mediating belatacept-resistant rejection, however, the developmental program giving rise to these cells has not been elucidated in detail.…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
CRISPR Screens to Map CTLA-4 Regulatory Networks in Primary Human T Cells
1UCSF, San Francisco, CA, 2Stanford University, Stanford, CA
*Purpose: For most cell types, the pathways that regulate the levels of critical disease-relevant genes are not known. Recent advances in gene editing have enabled…2021 American Transplant Congress
Effect of HLA Class II Polymorphism on Predicted Cellular Immunity Against SARS-CoV-2 at the Individual Level and Within Twenty Five Race/ethnic Groups
*Purpose: Development of adaptive immunity after COVID-19 and after vaccination against SARS-CoV-2 is predicated on recognition of viral peptides, presented on HLA class II molecules,…2021 American Transplant Congress
Dna-pkcs Regulation of the Allogeneic Immune Response
University of Arkansas, Little Rock, AR
*Purpose: Organ transplantation is life-saving and continued investigations into immunological mechanisms that drive organ rejection are needed to improve immunosuppression therapies and prevent graft failure.…2021 American Transplant Congress
Detection of SARS-CoV-2 Specific Functional T Cells Using a Seven Color Flow Cytometry Assay
Eurofins-Viracor, Lees Summit, MO
*Purpose: The need to evaluate SARS-CoV-2 immune responses is an important clinical research focus. Detecting neutralizing antibodies is one measure of immune response, but the…2021 American Transplant Congress
Impaired Antibody Responses to Spike Protein Antigens of Sars-cov-2 in Solid Organ Transplant (sot) Recipients
*Purpose: Chronic immunosuppression can impair antibody responses after natural infection and vaccination in SOT recipients. It is not known whether antibody responses are impaired in…
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