Abstracts Archive - Page 551 of 1683 - ATC Abstracts

2020 American Transplant Congress
Preformed Donor Specific Antibody and Mfi-Dependent Effects in Simultaneous Liver-Kidney Transplantation
V. Fleetwood, C. Papageorge, D. Aufhauser, G. Leverson, B. Welch, L. Hidalgo, D. Foley, Y. Yankol, A. D'Alessandro, D. Al-Adra, R. Redfield, J. Mezrich
Department of Transplantation, University of Wisconsin, Madison, WI
*Purpose: Preformed donor specific antibody to HLA Class II (pDSA) is suggested to be an independent risk factor for mortality in simultaneous liver and kidney…
2020 American Transplant Congress
Post-Transplant Hepatic CHOP Expression Dictates Clinical Outcomes in Liver Transplantation
H. Hirao¹, T. Ito¹, K. Nakamura², S. Kageyama¹, K. Kadono¹, H. Kojima¹, K. J. Dery¹, S. Younan¹, R. W. Busuttil¹, F. M. Kaldas¹, J. W. Kupiec‐Weglinski¹
¹UCLA, Los Angeles, CA, ²Kyoto University, Kyoto, Japan
*Purpose: Endoplasmic reticulum (ER) stress plays a pivotal role in the mechanism of liver ischemia reperfusion injury (IRI). Although we and others have demonstrated the…
2020 American Transplant Congress
Evaluation of Pre-Transplant T Cell Exhaustion as a Mechanism for Immune Dysfunction and Recipient Risk of Death Following Liver Transplant
K. E. Lunsford¹, N. Aware², K. Cleveland³, D. T. Nguyen⁴, E. A. Graviss⁴, L. J. Minze³, T. N. Eagar⁴, X. C. Li³, R. M. Ghobrial³
¹Department of Surgery, Rutgers New Jersey Medical School, Newark, NJ, ²Department of Surgery, Houston Methodist Hosptial, Houston, TX, ³Department of Surgery, Houston Methodist Hospital, Houston, TX, ⁴Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, TX
*Purpose: Cirrhosis-related immune dysfunction likely contributes to early mortality following liver transplant (LT) resulting from infections. We previously identified a pre-transplant biomarker panel for immune…
2020 American Transplant Congress
Accelerated Bronchiolitis Obliterans after Lung Transplant Promoted by the ATG16L1 rs2241880 Mutation is Coupled to Mitochondrial Damage and Metabolic Alterations in Monocyte-Derived Alveolar Macrophages
M. Cano¹, D. Zhou², D. Kreisel³, C. Chen⁴, K. Pugh², D. Byers¹, R. Hachem¹, A. E. Gelman³
¹Pulmonary and Critical Care, Washington University, Saint Louis, MO, ²Surgery, Washington University, Saint Louis, MO, ³Surgery and Pathology and Immunology, Washington University, Saint Louis, MO, ⁴Pulmonary and Critical Care, Southwestern Medical Center, Dallas, TX
*Purpose: Bronchiolitis obliterans (BOS) remains a major cause of death for lung transplant recipients, and the mechanisms that drive BOS remain poorly understood and require…
2020 American Transplant Congress
Tertiary Lymphoid Organs in Renal Chronic Allograft Rejection
K. Abou Daya, D. Zhao, K. Biery, M. Oberbarnscheidt
Starzl Transplantation Institute, Pittsburgh, PA
*Purpose: Chronic allograft rejection remains a major obstacle to long-term allograft survival. Tertiary lymphoid organs (TLOs) are ectopic lymphoid structures that arise in non-lymphoid tissues…
2020 American Transplant Congress
Role of Cross-Dressing in Kidney Transplantation
D. Zhao, R. Tieu, K. Abou-Daya, A. Williams, M. Oberbarnscheidt, F. Lakkis
Thomas E. Starzl Transplantation Institute, Pittsburgh, PA
*Purpose: Activation of host T cells that mediate allograft rejection is relied on dendritic cells (DCs) presenting alloantigens to T cells. Our recent study revealed…
2020 American Transplant Congress
Role of Innate Allorecognition Pathways in Mouse Kidney and Heart Allograft Rejection
D. Zhao¹, H. Dai¹, K. Abou-Daya¹, R. Tieu¹, A. Williams¹, M. Oberbarnscheidt¹, X. Li², F. Lakkis¹
¹Thomas E. Starzl Transplantation Institute, Pittsburgh, PA, ²Houston Methodist Hospital Immunobiology & Transplant Science Center, Houston, TX
*Purpose: Paired immunoglobulin-like receptors (PIR) and CD47 are molecules expressed on host myeloid cells. They recognize donor polymorphic MHC and signal regulatory protein alpha (SIRPα),…
2020 American Transplant Congress
Long-term Functional Survival of Human Stem Cell-Derived Islets Microencapsulated in Alginate with CXCL12 in Non-Human Primates without Immunosuppression
M. C. Poznansky¹, D. Alagpulinsa¹, J. Lei², R. Pop³, D. Sobell⁴, M. Chapin¹, S. Collins³, A. Veres³, H. Deng², D. Melton³, J. Markmann²
¹Vaccine and Immunotherapy Center, Massachusetts General Hospital, Charlestown Navy Yard, MA, ²Transplant Surgery, Massachusetts General Hospital, Boston, MA, ³Harvard Stem Cell Institute, Harvard University, Cambridge, MA, ⁴Vaccine and Immunotherapy Center, Massachusetts General Hospital, Boston, MA
*Purpose: Human pluripotent stem cell-derived islet-like cells (SC-islets) represent a practical source for beta-cell replacement to achieve a functional cure for type 1 diabetes. Long-term…
2020 American Transplant Congress
Immune Checkpoint PD-L1 Pathway as an Effective Platform for Localized Immunomodulation to Attain Indefinite Allogeneic Islet Graft Survival
L. Batra¹, P. Shrestha¹, H. Zhao¹, K. B. Woodward¹, M. Tan¹, O. G. Nuno¹, A. Togay¹, M. M. Coronel², A. J. Garcia², H. Shirwan¹, E. S. Yolcu¹
¹Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY, ²Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA
*Purpose: Allogenic islet transplantation is an effective therapeutic approach for the treatment of T1D. However, chronic immunosuppression to control rejection is a major limitation. The…
2020 American Transplant Congress
Generation of Insulin-Producing Cells via Multiplex Epigenetic Engineering of Human Somatic Cells in 2 Weeks
R. A. Naqvi¹, W. Zhang¹, A. Isidan¹, C. Evans-Molina², J. A. Fridell¹, P. Li¹, B. Ekser¹
¹Division of Transplant Surgery, Indiana University, Indianapolis, IN, ²Diabetes Research Center, Indiana University, Indianapolis, IN
*Purpose: Stem cell-derived β-cells not only promise a renewable supply of insulin-producing cells with negligible immunosuppression but may also provide a substrate for the identification…