Abstracts Archive - Page 601 of 1683 - ATC Abstracts

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
Depleting Laminin α5 in Lymph Node Stromal Cells Promotes Transplant Tolerance
L. Li, M. Shirkey, W. Piao, Y. Xiong, V. Saxena, T. Zhang, N. Toney, C. Paluskievicz, J. S. Bromberg
Surgery, U. Maryland, Baltimore, Baltimore, MD
*Purpose: Expression of stromal laminin α5β1γ1 (511) in lymph nodes (LN) is associated with immunity, while laminin α4β1γ1 (411) is associated with tolerance. The laminins…
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…
2019 American Transplant Congress
Donor Brain Death Affects Tolerance Induction in Non-Human Primates
W. Sommer¹, J. M. O², K. B. Pruner³, J. T. Paster³, A. Bean³, A. Dehnadi³, I. M. Hanekamp³, I. Rosales⁴, R. N. Smith⁴, R. B. Colvin⁴, G. Benichou³, J. S. Allan³, T. Kawai³, J. C. Madsen⁵
¹Department of Cardiothoracic Surgery, Hannover Medical School, Hannover, Germany, ²Center for Transplantation Sciences, Massachusets General Hospital, Boston, MA, ³Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ⁴Department of Pathology, Massachusetts General Hospital, Boston, MA, ⁵Center fro Transplantation Sciences, Massachusetts General Hospital, Boston, MA
*Purpose: Induction of durable allograft acceptance in combined heart/kidney transplantation in non-human primates is possible by applying a mixed chimerism-based conditioning protocol. However, the impact…
2019 American Transplant Congress
A Novel Method for Ex Vivo Treg Expansion via Human iNKT Cell Activation
R. Ishii¹, I. Masako¹, H. Katsumata¹, T. Kanzawa¹, T. Yamakawa¹, H. Ishigooka¹, T. Hirai¹, K. Saiga¹, M. Okumi¹, Y. Ishii², K. Tanabe¹
¹Urology, Tokyo Women's Medical University, Tokyo, Japan, ²Vaccine Innovation Laboratory RIKEN Cluster for Science, Technology and Innovation Hub (RCSTI), Kanagawa, Japan
*Purpose: Tregs play a critical role in immune tolerance. If Tregs can be administered to patients suffering from immune disorders, most therapies employing existing immunosuppressants…
2019 American Transplant Congress
IL-21 Induces the Transformation of Th Cell Subsets in Acute Rejection after Kidney Transplantation
H. Deng, R. Wang, J. Shen, J. Chen
Kidney Disease Center, First Affiliated Hospital of Zhejiang University, Hangzhou, China
*Purpose: IL-21 exhibits a wide range of immunomodulatory functions in the organism, regulating immune cells such as B cells and T cells. In this study,…