Articles tagged "Tolerance"

2020 American Transplant Congress
Human, Monkey Transplant Tolerance and IL35 “Exokine
W. J. Burlingham¹, E. Jankowska-Gan², D. Lema², J. H. Fechner², J. A. Sullivan², D. B. Kaufman²
¹University of Wisconsin, Madison, WI, ²Surgery, University of Wisconsin, Madison, WI
*Purpose: Studies in B6 (H2b) mice tolerized to CBA (H2k) have shown that induced allospecific Tregs make 2 very different forms of immunoregulatory cytokines: 1)…
2020 American Transplant Congress
Tracking Tregs in a Non-Human Primate Model with Expanded Autologous Treg Infusions In Vivo
K. Bruestle¹, B. Piegari¹, H. Sakai¹, F. Fredriksson¹, D. Ekanayake-Alper¹, S. Robertson², D. Hajosi², J. Weiner¹, A. Iuga³, S. M. Coley³, M. Sykes¹, A. Griesemer¹
¹Columbia Center for Translational Immunology, Columbia University, New York City, NY, ²Institute for Comparative Medicine, Columbia University, New York City, NY, ³Department of Pathology and Cell Biology, Columbia University, New York City, NY
*Purpose: Regulatory Tcell (Treg) therapy is a promising tool for tolerance induction in solid organ transplantation. Despite encouraging results in humans and monkeys, questions about…
2020 American Transplant Congress
Early Post-Transplant Infusion of Ex Vivo-Expanded Autologous Polyclonal Regulatory T Cells (Treg) Prolongs Kidney Allograft Survival in Non-Lymphodepleted, CTLA4Ig-Treated Rhesus Monkeys
K. Sasaki, Y. Wang, R. Nakano, L. Lu, J. Hughes, V. Vujevich, A. J. Ganoza, M. Wijkstrom, A. Humar, A. W. Thomson, M. B. Ezzelarab
Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA
*Purpose: Rodent studies have demonstrated the utility of regulatory T cell (Treg) infusion for the promotion of tolerance to organ allografts. Here, we evaluated the…
2020 American Transplant Congress
Infectious Tolerance Depends Upon the ‘Exokine’ IL35
W. J. Burlingham¹, J. A. Sullivan¹, Y. Tomita², E. Jankowska-Gan¹, D. Lema¹, S. Hong³, D. A. Vignali⁴
¹Surgery, University of Wisconsin, Madison, WI, ²Surgery, Tokai University, Tokyo, Japan, ³Pharmacy, University of Wisconsin, Madison, WI, ⁴Immunology, University of Pittsburgh, Pittsburgh, PA
*Purpose: Interleukin-35 (IL35) is an immunosuppressive cytokine composed of Ebi3 and p35 subunits. Yet the form(s) that IL35 assumes and its role in infectious tolerance,…
2020 American Transplant Congress
Establishing an Induction Protocol for Long-Term Multilineage Mixed Chimerism in Rhesus Macaques
K. Bruestle¹, H. Sakai¹, F. Fredriksson¹, B. Piegari¹, D. Ekanayake-Alper¹, A. McLuckie², R. Ober², J. Weiner¹, A. Iuga³, S. M. Coley³, M. Sykes¹, A. Griesemer¹
¹Columbia Center for Translational Immunology, Columbia University, New York City, NY, ²Institute for Comparative Medicine, Columbia University, New York City, NY, ³Department of Pathology and Cell Biology, Columbia University, New York City, NY
*Purpose: Mixed chimerism (MC) induction via non-myeloablative conditioning and bone marrow transplantation (BMT) induces tolerance to solid organs. Our standard MC induction protocol in cynomologous…
2020 American Transplant Congress
Gal9/Tim-3 Pathway was Required for Endometrial Stem Cells to Induce Peripheral Tolerance of Cardiac Allograft
Y. Zhao¹, Y. Hu¹, D. Yu¹, X. Li¹, W. Jin¹, Y. Qin¹, D. Kong¹, H. Wang¹, A. Alessandrini², H. Wang¹
¹Tianjin Medical University General Hospital, Tianjin, China, ²Massachusetts General Hospital, Boston, MA
*Purpose: The existing immunosuppressants seem to have little effect on Cardiac Allograft Vasculopathy but with obvious side effects. ERCs (Endometrial stem Cells), which are mesenchymal-like…
2020 American Transplant Congress
Treg-Lymphatic Interfaces: Unique Molecular Structures for Cell-Cell Interactions During Migration
C. M. Paluskievicz, W. Piao, Y. Xiong, J. S. Bromberg
U of Maryland, Baltimore, MD
*Purpose: To promote transplant tolerance, T regulatory cells (Treg) must enter the afferent lymphatic vasculature by migrating across lymphatic endothelial cells (LECs), and then home…
2020 American Transplant Congress
Eosinophils Maintain Lung Allograft Tolerance by Sequestering CD8+ T Cells in Bronchial Associated Lymphoid Tissue
Z. Mei¹, Y. Guo¹, A. Hata¹, A. Banerjee¹, D. Li¹, A. Manafi¹, B. Mahgoub¹, D. Kreisel², A. Gelman², A. S. Krupnick¹
¹Department of Surgery, University of Virginia, Charlottesville, VA, ²Department of Surgery, Washington University in St. Louis, St. Louis, MO
*Purpose: It has been recently described that eosinophils can facilitate immunosuppression-mediated acceptance of murine lung allografts. But the role of eosinophils in long term maintenance…
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
ABO Self-Tolerance in a Mouse Model: Evidence of Tolerance at B Cell but Not T Cell Level
I. Adam, B. Motyka, K. Tao, L. West
Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
*Purpose: We showed that human infants become tolerant to donor A/B-antigens (Ag) after ABO-incompatible heart transplantation (ABOi-HTx) by mechanisms not well-defined. To expand ABOi-HTx effectively…