Abstracts Archive - Page 662 of 1683 - ATC Abstracts

2019 American Transplant Congress
RNA Splicing and Lineage Progression: Identification of an Integrated Splicing Pattern in Endodermal Lineage Progression
J. Fair¹, N. Liu¹, S. G. Widen², W. S. Fagg¹
¹Surgery, University of Texas Medical Branch, Galveston, TX, ²Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX
*Purpose: Epigenetic states such as histone modifications and DNA methylation that influence transcription are well-characterized regulators of stem cell pluripotency and differentiation to specific lineages.…
2019 American Transplant Congress
Pluripotent Stem Cell Differentiation: Delaying Forward Differentiation Signals Maintains Definitive Endoderm Phenotype for Cellular Transplantation
J. Fair¹, M. M. Shoja¹, N. Liu¹, I. Patrikeev², M. Motamedi², W. S. Fagg¹
¹Surgery, University of Texas Medical Branch, Galveston, TX, ²Opthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX
*Purpose: Endodermal precursors (EP), derived in vitro from mouse pluripotent stem cell (PSC) sources, are capable of clinically useful engraftment in the unmodified (quiescent) liver…
2019 American Transplant Congress
Generation of Thymic Epithelial Cells from Induced Pluripotent Stem Cells to Prolong Allograft Survival
R. Otsuka, H. Wada, H. Tsuji, A. Sasaki, T. Murata, M. Baghdadi, K. Seino
Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
*Purpose: Pluripotent stem cell (PSC) is a potential source of generating functional therapeutic cells for transplantation. Embryonic stem cells are of absolutely allogeneic origin. Induced…
2019 American Transplant Congress
Analysis and Regulation of Immune Reaction in the Transplantation from MHC Homozygous Donors to Heterozygous Recipients with Minor Antigen Mismatches
T. Murata, H. Wada, R. Otsuka, H. Tsuji, A. Sasaki, M. Baghdadi, K. Seino
Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
*Purpose: Induced pluripotent stem cells (iPSCs) is expected to be the source of therapeutic cells in the regenerative medicine. Autologous derivation of iPSCs is the…
2019 American Transplant Congress
In Vivo/In Situ Behaviour of Allogeneic Spleen versus Bone Marrow Cells in Wild-Type Neonatal Mice: Insights into Robust Transplant Tolerance Induction
R. A. Bascom, K. Tao, L. J. West
Pediatrics, University of Alberta, Edmonton, AB, Canada
*Purpose: Comparing the behaviour of fully allogeneic spleen (SC) vs bone marrow cells (BMC) in non-conditioned neonatal mice is important for maximizing synergistic interactions between…
2019 American Transplant Congress
MHC Cross-Dressing in Mixed Hematopoietic Chimerism
B. Gonzalez Nolasco¹, M. Wang¹, W. Orent¹, A. Prunevieille¹, K. Pruner¹, J. O¹, J. Paster¹, J. C. Madsen², G. Benichou¹
¹Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Department of Surgery, Center for Transplantation Sciences, Division of Cardiac Surgery, Massachusetts General Hospital, Boston, MA
*Purpose: Achieving specific long-term allograft survival without ongoing immunosuppression is one of the main objectives in transplantation. Mixed hematopoietic chimerism is a strategy that has…
2019 American Transplant Congress
Heart En Bloc Thymus Cotransplantation in NHPs
J. O¹, W. Sommer², K. Pruner³, J. T. Paster⁴, I. M. Hanekamp¹, A. Dehnadi¹, I. Rosales¹, R. N. Smith¹, R. B. Colvin¹, G. Benichou¹, J. S. Allan¹, J. C. Madsen¹
¹Center for Transplantation Sciences, MGH, Boston, MA, ²Hannover Medical School, Hannover, Germany, ³University of Washington, Seattle, WA, ⁴MGH, Boston, MA
*Purpose: Tolerance of isolated cardiac allografts has never been achieved in NHPs. We investigated whether a cotransplanted, vascularized, donor thymus could induce tolerance of a…
2019 American Transplant Congress
Ablation of Interferon Regulatory Factor 4 in T Cells Induces “Memory” of Transplant Tolerance That is Irreversible by Immune Checkpoint Blockade
H. Zhang¹, J. Wu², D. Zou³, W. Chen³
¹The second Xiangya Hospital, Changsha, China, ²Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, ³Immunobiology & Transplant Science Center, Houston Methodist Research Institute, Houston, TX
*Purpose: Achieving alloantigen-specific transplant tolerance through ablation of interferon regulatory factor 4 in T cells*Methods: 1. Irf4fl/flCD4-Cre recipients were first transplanted with BALB/c hearts and…
2019 American Transplant Congress
Kidney Allografts Induce Systemic Tolerance of Heart Allografts and is Dependent on Foxp3+ Cells
C. Yang¹, J. Ge¹, P. S. Russell¹, J. C. Madsen¹, A. Alessandrini¹, R. B. Colvin²
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Department of Pathology, Massachusetts General Hospital, Boston, MA
*Purpose: We have successfully achieved cardiac allograft tolerance in both pigs and NHP by donor kidney co-transplantation. The mechanism of Kidney Induced Cardiac Allograft Tolerance…
2019 American Transplant Congress
B7H1 Expression is Crucial for Tolerance Induction in Mouse Liver Transplantation
M. Morita¹, S. Datta¹, C. Miller², T. Hamilton¹, K. Hashimoto³
¹Inflammation & Immunity, Lerner Research Institution, Cleveland, OH, ²General surgery, Liver Transplant Center, Cleveland Clinic, Cleveland, OH, ³General Surgery, Liver Transplant Center, Cleveland Clinic, Cleveland, OH
*Purpose: Following organ transplantation, lifelong immunosuppressive treatment is required and it causes severe side effects. Induction of donor specific tolerance is ideal, which actually spontaneously…