Articles tagged "T cells"

2019 American Transplant Congress
Cd45rb Mediates Cd8⁺T Cell Persistence In An Allogeneic Heterologous Immune Response
S. M. Krummey, A. B. Morris, M. L. Ford
Emory Transplant Center, Atlanta, GA
*Purpose: Memory T cells primed with microbial antigen can cross-react with alloantigen and mediate graft rejection, a process termed allogeneic heterologous immunity. Human and murine…
2019 American Transplant Congress
The Frequency of Tissue-Resident Donor T and NK Cells in Peripheral Blood after Lung Transplantation is Modulated by Normothermic Ex Vivo Lung Perfusion
C. S. Falk¹, B. Wiegmann², A. Hitz¹, R. Bellmas-Sanz¹, K. Bläsing¹, F. Ius², C. Kühn², M. Avsar², I. Tudorache², J. Kühne¹, F. Wandrer¹, A. Haverich², G. Warnecke²
¹Institute of Transplant Immunology, Hannover Medical School, Hannover, Germany, ²Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
*Purpose: The appearance of passenger donor lymphocytes in recipient blood after double lung transplantation has been described decades ago. However, neither their early kinetics, nor…
2019 American Transplant Congress
Intact Lymphatics Are Essential for Costimulation Blockade-Induced Lung Allograft Survival
L. Wang¹, H. Reed², R. Han¹, M. Kahn², W. W. Hancock¹
¹Children's Hospital of Philadelphia, Philadelphia, PA, ²University of Pennsylvania, Philadelphia, PA
*Purpose: Blocking lymphangiogenesis is thought to diminish immune responses to donor tissues. However, lung transplantation (Tx), which involves airway and vascular but not lymphatic anastomoses,…
2019 American Transplant Congress
Bespoke Immunosuppression: Prolonging Transplant Survival through Enhanced T-cell Activation Induced Cell Death
R. Costello¹, R. J. Ingram¹, D. Longley², J. McDaid³
¹WWIEM, QUB, Belfast, United Kingdom, ²CCRCB, QUB, Belfast, United Kingdom, ³Renal Transplantation, Belfast City Hospital, Belfast, United Kingdom
*Purpose: We aim to develop donor-specific immunosuppression by inhibiting T-cell cellular FLICE like inhibitory protein (c-FLIP). Our current work focuses on clinically relevant pharmacological inhibitors…
2019 American Transplant Congress
S1PR1 and S1PR4 Regulate T Cell Migration into Afferent Lymphatics
Y. Xiong¹, W. Piao¹, C. Brinkman¹, L. Li¹, J. Kulinski², A. Olivera², A. Cartier³, T. Hla⁴, K. Hippen⁵, B. Blazar⁶, S. Schwab⁷, J. Bromberg¹
¹Surgery, UMB, Baltimore, MD, ²NIH, Bethesda, MD, ³Boston Children's hospital, Boston, MA, ⁴Boston Children's, Boston, MA, ⁵U.Minnesota, Minneapolis, MN, ⁶U.Minnesota, Minneapolis, MD, ⁷NYU, NY, NY
*Purpose: T cells utilize S1PR1 to traffic from thymus into blood, and lymph nodes (LN) into efferent lymphatics. Whether T cell S1PR1 and S1PR4 regulate…
2019 American Transplant Congress
Granulocyte – Colony Stimulating Factor (G-CSF) and Granulocyte – Macrophage Colony Stimulating Factor (GM-CSF) Administration Augments the Incidence of Peripheral Blood Suppressive Regulatory T Cells in Nonhuman Primates
K. Sasaki, Y. Wang, L. Lu, J. Hughs, A. W. Thomson, M. B. Ezzelarab
Department of Surgery, Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA
*Purpose: Granulocyte-colony stimulating factor (G-CSF) and granulocyte-macrophage CSF (GM-CSF) are known to mobilize immune cells to the peripheral blood. We evaluated regulatory T cells (Treg)…
2019 American Transplant Congress
RNA Sequencing Guided Identification of Shared mRNAs in Human Kidney Allograft Recipients with Acute T Cell Mediated Rejection or Active Antibody Mediated Rejection
B. Dooley¹, A. Verma², R. Ding¹, C. Li¹, C. Snopkowski¹, H. Yang¹, B. Botticelli¹, S. Albakry¹, E. Edusei¹, T. Muthukumar¹, M. Lubetzky¹, D. Dadhania¹, J. Lee¹, O. Elemento², M. Suthanthiran¹
¹Transplantation Medicine, Weill Cornell Medical College, New York, NY, ²Institute for Computational Biomedicine, Weill Cornell Medical College, New York, NY
*Purpose: T cell help is essential for B cell production of antibodies to donor organ HLA. Because T cell-B cell interactions contribute to anti-allograft immunity,…
2019 American Transplant Congress
Store-Operated/Calcium Release Activated Calcium Channel Orai3 is a Novel Target for Immunoregulation
D. Shankaranarayanan¹, M. Lagman¹, V. Sharma¹, C. Li¹, M. Cassidy¹, C. Snopkowski¹, H. Yang¹, T. Muthukumar¹, K. Machaca², M. Suthanthiran¹
¹WCMC, New York, NY, ²WCMC, Doha, Qatar
*Purpose: Store-operated/calcium release activated calcium (CRAC) channels are essential for the signaling of immune cells via calcineurin, a calcium-calmodulin dependent serine-threonine phosphatase. The central importance…
2019 American Transplant Congress
Novel Role of Qa-1-Restricted Immunoregulation in Murine Cardiac Transplantation
J. Y. Choi¹, S. K. Eskandari¹, J. Assaker¹, I. Sulkaj¹, S. Cai¹, H. Allos¹, M. Uehara¹, M. Mohammad¹, B. S. Al Dulaijan¹, A. Bano¹, E. Al Huassain¹, H. I. Cantor², J. R. Azzi¹
¹Medicine, Brigham and Women's Hospital, Boston, MA, ²Dana-Farbar Caner Institute, Boston, MA
*Purpose: HLA-E is an MHC class-1b molecule that is under-studied in the transplant setting. Recent clinical studies have revealed a robust association between allograft outcome…
2019 American Transplant Congress
Adipose Stem Cells Promote Composite Tissue Engraftment
N. Shockcor¹, B. Buckingham¹, W. Hassanein¹, D. Parsell¹, U. Dhru¹, B. Akinsiku², E. Elster², T. Davis², J. Gimble³, A. Nam¹, S. Bartlett¹, R. Barth¹
¹Surgery, University of Maryland, Baltimore, MD, ²Uniformed Services University of the Health Sciences, Bethesda, MD, ³LaCell LLC, New Orleans, LA
*Purpose: Adipose-derived stem cells (ASC) have increased levels of anti-inflammatory and immunoregulatory factors. Murine studies have shown stable macrochimerism and long-term full thickness skin graft…