2022 American Transplant Congress
Modification of Gut Microbiota Accelerates Kidney Repair After Experimental Ischemia Reperfusion Injury
Johns Hopkins Medicine, Baltimore, MD
*Purpose: Kidney ischemia reperfusion injury (IRI) leads to changes in gut microbiome, and pre-IR microbiome changes can modify course of experimental tissue injury. There is…2021 American Transplant Congress
Cd4 T Cells Can Trigger Nk-dependent Chronic Rejection Independent of Antibodies
*Purpose: In transplantation, recipient CD4+ T cells have two potential means of MHC class II-restricted donor antigen detection: (1) the direct recognition of allogeneic MHC…2021 American Transplant Congress
Laminins Differentially Regulate Adaptive Alloimmune Responses
1Surgery, UMB, Baltimore, MD, 2CVID, UMB, Baltimore, MD, 3Harvard University, Boston, MA
*Purpose: Lymph node (LN) stromal cell expressed laminin α4 (Lama4) and laminin α5 (Lama5) fibers are associated with tolerance and immunity, respectively. They regulate cell…2021 American Transplant Congress
TIGIT Identifies Polyfunctional Donor-Specific CD4+ T Cells Lost After Kidney Transplantation
Nephrology and Transplantation, Erasmus MC, Rotterdam, Netherlands
*Purpose: Development of T-cell hyporesponsiveness to donor antigen may explain the substantial decrease in the risk for acute rejection in the years following kidney transplantation.…2021 American Transplant Congress
Targeting Il-21 Receptor Shifts Tfh/tfr Balance and Ameliorateschronic Antibody Mediated Rejection
Tianjin First Central Hospital, Tianjin, China
*Purpose: Donor specific antibody (DSA) plays a central role in chronic kidney allograft injury. As a trigger of humoral alloimmune response, follicular T helper cells(Tfh)…2021 American Transplant Congress
CD80/PD-L1 Uniquely Regulates CD4 Effector T Cell Migration
1U Maryland, baltimore, MD, 2U Minnesota, Minneapolis, MN, 3Harvard U, boston, MA
*Purpose: CD80 is a costimulatory molecule expressed on antigen presenting cells (APCs) that binds CD28 and CTLA4, stimulating or inhibiting immunity, respectively. CD80 also binds…2021 American Transplant Congress
Peripheral Lymphocyte Profiling and Increased Risk of EBV Infection in Pediatric Liver Transplant Recipients
*Purpose: Epstein-Barr virus “EBV” infection and post-transplant lymphoproliferative disorders “PTLD” are significant comorbidities in the post-transplant “PT” setting, especially in pediatrics. The synergy among T…2020 American Transplant Congress
Can Cxcr3+Cd62l–Cd4+ T Cells Serve as Early Warning Sentinels for Subclinical Rejections after Vascularized Composite Allotransplantation (vca)?
*Purpose: New microsurgical techniques and powerful immunosuppressive drugs have made it possible for severely injured patients to receive VCA to replace limbs, hands, or faces,…2020 American Transplant Congress
Circulating Tissue Specific Exosomes Enable Noninvasive Diagnosis of Acute Cellular Rejection in Clinical Heart Transplantation
*Purpose: There is a critical need for development of noninvasive biomarkers for allograft surveillance and diagnosis of rejection in heart transplant patients, as endomyocardial biopsy…2020 American Transplant Congress
T Cells from Highly Sensitized Kidney Transplant Patients Display Distinct TCR Repertoires
1RIMUHC, Montreal, QC, Canada, 2McGill University, Montreal, QC, Canada
*Purpose: Sensitization to HLA antigens limits patient’s access to renal transplantation and causes higher risk of acute rejection and graft loss. T-cells, B-cells and donor-specific…
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