2017 American Transplant Congress
Rapamycin Directly Alters Human Endothelial Cell Alloimmunogenicity.
The mTOR inhibitor rapamycin (Rapa) is known to suppress T cell function. However, many of its in vivo effects, particularly its synergistic effects with costimulation…2017 American Transplant Congress
Exosomes Containing IL35 Are Secreted by Donor-Specific Regulatory T Cells and Cause Linked-Suppression.
Introduction: We previously reported that donor specific splenocytes transfusion (DST) plus anti-CD40L costimulatory blockade treatment causes allo-specific regulation approximately 5 weeks after the tolerization. The…2017 American Transplant Congress
Role of Donor-Derived Tissue Resident Memory T cells in Modulating Alloimmunity.
Emory Transplant Center, Emory University, Atlanta, GA
Recipient-derived, graft-specific memory T cells play a critical role in mediating allograft rejection, particularly in the setting of immunosuppression with costimulation blockade. Recently, it is…2017 American Transplant Congress
Refinement of an Old Faithful: A Standardized Flow Cytometry Approach to Measure Donor-Recipient Alloreactivity (a Pilot Study).
Purpose: Donor-specific antibody (DSA) and antibody (Ab)-mediated rejection are challenges in long-term outcomes and limit re-transplantation. Sensitizing events such as homografts in surgical procedures, assist…2017 American Transplant Congress
Extracellular Mitochondria Cause B7 Costimulation Blockade Resistant Allograft Rejection in Mice.
1Surgery, Duke University, Durham, NC; 2Immunology, Duke University, Durham, NC
Introduction: Mitochondria released in the setting of tissue injury and cell death are a source of damage-associated molecular patterns that activate innate immune responses. We…2017 American Transplant Congress
Donor Batf3-Dependent Dendritic Cells Initiate Acute Rejection in a Skin Transplantation Model.
Donor skin dendritic cells (DCs) play a crucial role in providing allospecific signal to host T cells either by direct interaction of donor MHC with…2017 American Transplant Congress
FcγRIIB-Mediated Coinhibition Attenuates Donor-Reactive CD8+ T Cell Responses.
Emory Transplant Center, Emory University, Atlanta, GA
Memory T cells can be a formidable barrier to long-term, rejection-free allograft survival, particularly in the setting of costimulation blockade. Ongoing work in the field…2017 American Transplant Congress
Islet Rejection in Autoimmune NOD Mouse Recipients: Implications for Stem Cell Therapies.
Several efforts are ongoing to use stem cell precursors to generate islet-like tissues suitable for transplantation in autoimmune Type 1 diabetic (T1D) recipients. During the…2016 American Transplant Congress
Activation of Alloreactive T Cells by Allogeneic Exosomes and Cells Cross-Dressed with Allogeneic MHC Molecules.
Our recent studies have documented the presence of high numbers of recipient antigen presenting cells (APCs) displaying donor MHC molecules (cross-dressed) on their surface after…2016 American Transplant Congress
Fate of Endogenous Alloreactive B Cells in Transplant Tolerance.
The conceptual underpinning of our studies is that robust tolerance requires multiple mechanisms to enforce functional quiescence of alloreactive T and B cells. While much…
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