2021 American Transplant Congress
Alloreactive Memory T Follicular Helper Cells Rapidly Differentiate Into Effectors Independent of B Cell Memory Following Retransplantation
Department of Surgery, Emory, Atlanta, GA
*Purpose: Donor-directed HLA antibodies are an important cause of renal allograft injury, but effective therapeutic options to prevent or eliminate donor-specific antibodies (DSA) do not…2021 American Transplant Congress
The Gut Microbiotainduces Local and Systemic Immune Modulation
*Purpose: We previously demonstrated that gut microbiome alterations, through fecal microbiota transfer (FMT) or single bacteria transfer, had specific immune effects for cardiac allograft outcome.…2021 American Transplant Congress
Distinct Phenotype and Function of Antibody-suppressor Cxcr5+Cd8+ T Cells
*Purpose: We have reported that the novel subset of antibody-suppressor CD8+ T cells (termed CD8+ TAb-supp cells) require the expression of CXCR5. In addition, alloprimed…2021 American Transplant Congress
Single Cell Rna-Sequencing of Urinary Cells and Defining the Immune Landscape of Rejection in Human Kidney Allografts
*Purpose: Transcriptome-based clustering of urinary cells in kidney transplant recipients may help identify cell-type specific injury and develop cell-type specific biomarkers for the noninvasive assessment…2021 American Transplant Congress
Proteomic Analysis of Extracellular Vesicles Derived From a Potent Donor-specific Regulatory T Cell-enriched Population Demonstrates Multiple Markers of Immune Suppression
*Purpose: Extracellular vesicles (EVs) are emerging as vital mediators of intercellular communication and immune regulation. Regulatory T cells (Tregs) play an integral role in immune…2021 American Transplant Congress
Gm2a: A Novel Regulatory Pathway Controlling Alloimmunity
1Department of Surgery, Emory University, Atlanta, GA, 2Mount Sinai School of Medicine, New York, NY
*Purpose: In recently published studies we discovered that the inhibitory receptor FcγRIIB regulates CD8+ T cell alloimmunity in a cell-autonomous fashion, and that increased expression…2021 American Transplant Congress
Estrogen Receptors Alpha and Beta are Required for Immune Homeostasis and Normal Treg Function
*Purpose: Estrogen signaling is a critical component of mammalian homeostasis, acting through a complex and interconnected system of hormone synthesis pathways and receptor signaling cascades.…2020 American Transplant Congress
Assessing Immunosuppression with Immunological Testing and Surveillance Biopsies Late after Liver and Intestine Transplantation (LT, IT)
Pediatric Transplant, Pittsburgh, PA
*Purpose: Assessing adequacy of immunosuppression is essential during late allograft surveillance after LT or IT.*Methods: To explain why allograft function tests can be normal despite…2020 American Transplant Congress
The Effect of Ex Vivo Preservation and Regulatory T Cells on the Development of Transplant Arteriosclerosis in a Humanized Mouse Model
*Purpose: Lung transplantation is the last remaining option for treatment of end stage lung disease. Explanted lungs can be preserved using ex vivo lung perfusion…2020 American Transplant Congress
Altering Homeostatic Repopulation with Thymic Irradiation and Donor Mesenchymal Stem Cell Infusions in a Nonhuman Primate Model
Department of Surgery, Duke University Medical Center, Durham, NC
*Purpose: Lymphocyte depletion and subsequent homeostatic repopulation present opportunities to shape the alloreactive immune repertoire to favor tolerance. We tested if the addition of thymic…
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