Articles tagged "Antigen presentation"

2021 American Transplant Congress
Precision Medicine in Renal Transplantation: Structural Biology of HLA Defines Allelic Binding of Cardinal Pathogenic Viruses in Transplantation
K. R. Sherwood¹, A. Nguyen², J. Tran¹, O. Gunther³, A. Nellore², R. Thompson², J. Lan¹, L. Allan¹, P. A. Keown¹
¹Vancouver General Hospital, Vancouver, BC, Canada, ²Biomedical Engineering, Oregon Health & Science University, Portland, OR, ³Gunther Analytics, Vancouver, BC, Canada
*Purpose: The incidence, clearance and clinical expression of viremia post-Tx are heterogeneous, complicating prediction, prognosis and therapy. We postulated that variation viral presentation related to…
2021 American Transplant Congress
Inhibition of Fatty Acid Beta-Oxidation Prolongs Heart Allograft Survival
B. W. Wong, Y. Zhu, H. Dun, L. Ye
Surgery, Washington University School of Medicine, Saint Louis, MO
*Purpose: To test the therapeutic efficacy of pharmacological inhibition of fatty acid beta-oxidation (FAO) on acute heart allograft survival.*Methods: We used a heterotopic Balb/c donor…
2021 American Transplant Congress
The Development and Characterization of AT1501, an Anti CD40L Antibody Lacking Fc Effector Function
S. Perrin¹, A. Gill², C. Gill², F. Vieira², K. Thompson², J. Lincecum², B. Jiang²
¹Novus Therapeutics, Irvine, CA, ²ALS Therapy Development Institute, Cambridge, MA
*Purpose: CD40L is a costimulatory type II membrane receptor for CD40. The binding of CD40L on T helper cells to CD40 on antigen presenting cells…
2020 American Transplant Congress
Xenoantibody Depletion of Human Blood with Normothermic Machine Perfusion of Porcine Kidney and Lung Prior to Liver Perfusion
T. M. Coe¹, N. Serifis¹, S. Raigani¹, C. Carroll¹, C. G. Rickert¹, R. Matheson¹, D. Detelich², W. Qin³, Y. Kan³, J. Layer³, M. Youd³, W. Westlin³, L. Yang³, A. Azimzadeh¹, J. F. Markmann¹
¹Surgery, Massachusetts General Hospital, Boston, MA, ²Surgery, Tufts Medical Center, Boston, MA, ³eGenesis, Cambridge, MA
*Purpose: Genetic modifications of porcine donors for pig-to-human xenotransplantation have led to significant progress in survival of xenografts in preclinical models. Triple knock-out (TKO) of…
2020 American Transplant Congress
The Role of Galectin-1 and Basement Membrane Remodeling in Kidney Antibody-Mediated Rejection
S. Clotet-Freixas¹, C. McEvoy¹, I. Batruch², M. Kotlyar³, C. Pastrello³, J. Van¹, M. Arambewela¹, A. Boshart¹, S. Farkona¹, A. Bozovic⁴, V. Kulasingam⁴, P. Chen¹, I. Jurisica³, A. Chruscinski¹, R. John⁴, A. Konvalinka⁵
¹Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada, ²Department of Laboratory Medicine and Pathobiology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada, ³Krembil Research Institute, University Health Network, Toronto, ON, Canada, ⁴Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada, ⁵Department of Medicine, Division of Nephrology, University Health Network, Toronto, ON, Canada
*Purpose: Antibody-mediated rejection (AMR), the leading cause of kidney graft loss, is caused by anti-HLA and non-HLA antibodies against proteins in two main kidney compartments:…
2020 American Transplant Congress
Single Cell RNA Sequencing of Murine Kidney Allografts Identifies Macrophage Gene Signature Associated with Acute Rejection
A. Dangi¹, N. Natesh², M. Monal¹, J. Wang³, X. Shen², X. Luo¹
¹Nephrology/Medicine, Duke University, Durham, NC, ²Biomedical Engineering, Duke University, Durham, NC, ³Surgery, Duke University, Durham, NC
*Purpose: Evaluating kidney allografts using single cell RNA sequencing (scRNAseq) can provide a comprehensive qualitative and quantitative gene expression data on thousands of individual cells.…
2020 American Transplant Congress
Withaferin A Prolongs Islet Allograft Survival in a Mouse Transplant Model by Preventing T Lymphocyte Proliferation and Dendritic Cell Maturation
K. Kumano¹, M. A. Kanak², S. Vasu¹, Y. Liu¹, M. Lawrence¹, B. Naziruddin¹
¹Baylor University Medical Ctr, Dallas, TX, ²Virginial Commonwealth University Medical Center, Richmond, VA
*Purpose: Chronic decline in islet graft function and toxicities imposed by immunosuppressant drugs remain as challenges to the widespread use of islet transplantation for type…
2020 American Transplant Congress
Pleural Exosome Mediated Donor Antigen Trafficking Into Mediastinal Lymph Nodes Represents a Novel Pathway of Recipient T Cell Activation in Lung Transplantation
A. Habertheuer¹, A. Japp², C. Ram³, S. Chatterjee⁴, S. Rostami², L. Korutla⁵, T. Ochiya⁶, A. Naji², D. Kreisel⁷, P. Vallabhajosyula⁵
¹Surgery, University of Pittsburgh, Pittsburgh, PA, ²Surgery, University of Pennsylvania, Philadelphia, PA, ³New York University, New York, NY, ⁴Pathology, University of Pennsylvania, Philadelphia, PA, ⁵Surgery, Yale University, New Haven, CT, ⁶National Cancer Center Japan, Tokyo, Japan, ⁷Surgery, Washington University, St. Louis, MO
*Purpose: Studies in lung transplant models suggest that reestablishment of lymphatic continuum of pulmonary allograft via lymphangiogenesis is required for selective trafficking of donor antigen…
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
Y. Zheng, R. Nakano, A. Thomson
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
The Role of Antigen Presentation in B Regulatory Cell Function
A. Cuenca¹, N. Feeney², K. Deng², Q. Fu², G. Huai², C. Rickert², K. Lee², J. Markmann²
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…