2021 American Transplant Congress
Quilty Lesions are Associated with a Tolerance Profile in Heart Allografts Biopsies
Pathology, UTSW Medical Ctr, Dallas, TX
*Purpose: Previously, in 42 cardiac allograft biopsies, we demonstrated that the presence of Foxp3+ innate and TGF- β + adaptive regulatory lymphocytes in Quilty lesions…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…2020 American Transplant Congress
Treg-Lymphatic Interfaces: Unique Molecular Structures for Cell-Cell Interactions During Migration
*Purpose: To promote transplant tolerance, T regulatory cells (Treg) must enter the afferent lymphatic vasculature by migrating across lymphatic endothelial cells (LECs), and then home…2020 American Transplant Congress
Eosinophils Maintain Lung Allograft Tolerance by Sequestering CD8+ T Cells in Bronchial Associated Lymphoid Tissue
*Purpose: It has been recently described that eosinophils can facilitate immunosuppression-mediated acceptance of murine lung allografts. But the role of eosinophils in long term maintenance…2020 American Transplant Congress
IL-10 Exposure Enhances IRAK-M Expression to Promote Endotoxin Tolerance and the T Cell Tolerogenic Potential of Liver Conventional DCs
Surgery, Starzl Transplantation Institute, Pittsburgh, PA
*Purpose: Liver conventional myeloid (m)DC contribute to liver transplant tolerance. When freshly-isolated, they produce low levels of IL-12 but high levels of IL-10 compared with…2020 American Transplant Congress
ABO Self-Tolerance in a Mouse Model: Evidence of Tolerance at B Cell but Not T Cell Level
Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
*Purpose: We showed that human infants become tolerant to donor A/B-antigens (Ag) after ABO-incompatible heart transplantation (ABOi-HTx) by mechanisms not well-defined. To expand ABOi-HTx effectively…2020 American Transplant Congress
Liver Plasmacytoid Dendritic Cells Express High Levels of DAP12, TREM2 and PD-L1 and Promote Effector T Cell Exhaustion and Augmented Treg Responses in Spontaneous Liver Transplant Tolerance
University of Pittsburgh, Pittsburgh, PA
*Purpose: The precise mechanisms of liver transplant tolerance are yet to be elucidated. Non-conventional plasmacytoid dendritic cells (pDCs) are thought to promote immune regulation, including…2020 American Transplant Congress
The Gut Microbiota Stimulates Dendritic Cells for Immune Modulation
University of Maryland, Baltimore, Baltimore, MD
*Purpose: The gut microbiota is a driving force in host immune regulation, and thus a potential target for intervention and drug development. We previously showed…2020 American Transplant Congress
The Role of Antigen Presentation in B Regulatory Cell Function
1Boston Children's Hospital, Boston, MA, 2Massachusetts General Hospital, Boston, MA
*Purpose: B regulatory cells (B regs) represent a subset of B cells with non-canonical regulatory function. The majority of effort has been focused on the…2020 American Transplant Congress
Neuropilin 2 is a Novel Coinhibitory Molecule That Suppresses Alloimmune Responses Following Transplantation
Boston Children's Hospital, Boston, MA
*Purpose: We have previously reported that signaling via the transmembrane receptor neuropilin 2 (NRP2) regulates PI3K/mTOR/Akt activity in several human cell lines. Furthermore, it is…
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