Articles tagged "Tolerance"

2020 American Transplant Congress
Myeloid Derived Suppressor Cells Expanded by Granulocyte-Colony Stimulating Factor Prolong Allogeneic Cardiac Graft Survival When Compared with MDSCs Expanded by Different Means
Y. S. Lee, T. Zhang, J. S. Bromberg, J. R. Scalea
Department of Surgery, University of Maryland, Baltimore, MD
*Purpose: Myeloid-derived suppressor cells (MDSCs) inhibit T cell responses and may provide a pathway towards tolerance. Granulocyte-colony stimulating factor (GCSF) is used in clinical practice…
2020 American Transplant Congress
Agonistic Anti-CD272 Antibody (6B2) Suppressed Donor Specific Antibody Through Inducible Regulatory T Cells
Y. Yamamoto¹, M. Uchiyama², K. Uchida³, H. Yagita⁴, M. Niimi¹
¹Surgery, Teikyo University, Tokyo, Japan, ²Cardiovascular Surgery, Teikyo University, Tokyo, Japan, ³Hepato- Biliary- Pancreatic Surgery, Juntendo University, Tokyo, Japan, ⁴Immunology, Juntendo University, Tokyo, Japan
*Purpose: The co-inhibitory receptor B and T lymphocyte attenuator (BTLA; CD272) is a coinhibitory molecule and may play an important role in alloimmune responses. We…
2020 American Transplant Congress
Operational Tolerance in Kidney Transplant Recipients: Tomogram Transcriptomic Study
O. Viklicky¹, J. Klema², P. Mrazova¹, D. Abramowitz³, M. Abramowicz⁴, A. Massart³, P. Hruba¹
¹Institute for Clinical and Experimental Medicine, Prague, Czech Republic, ²Czech Technical University, Prague, Czech Republic, ³Antwerp University Hospital, Antwerp, Belgium, ⁴Université Libre de Bruxelles, Brussels, Belgium
*Purpose: TOMOGRAM is a European multicenter study, that aims to identify transcriptomic and genomic signatures of operational tolerance (OT) in a recently identified cohort of…
2020 American Transplant Congress
Thalidomide and Dexamethasone Combinatorial Treatment Induces Tolerogenic Signals by Systemic Immunomodulation of T Cells and Dendritic Cells
B. Kim¹, E. Kim², J. Kim², H. Choi³, H. Lee², J. Lee⁴, M. Kim⁴, Y. Kim⁴, K. Huh⁴
¹Department of Internal Medicine, Yonsei University Health System, Seoul, Korea, Republic of, ²The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea, Republic of, ³Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea, Republic of, ⁴Department of Transplantation Surgery, Yonsei University Health System, Seoul, Korea, Republic of
*Purpose: Preventing or reducing allograft rejection is critical in organ transplantation, and the need for immune modulation rather than immune suppression has been emphasized. Many…
2020 American Transplant Congress
The Fibrinogen-Like Protein 2 Molecule Influences the Development of Thymic Regulatory T-Cells
C. Lam¹, S. Moshkelgosha¹, G. A. Levy², A. Chruscinski³, S. C. Juvet⁴
¹Latner Thoracic Surgery Research Laboratories, University Health Network, Toronto, ON, Canada, ²Multi Organ Transplant Program, University Health Network, Toronto, ON, Canada, ³Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada, ⁴Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
*Purpose: Transplantation is the primary treatment for patients with end-stage organ failure. However, long-term outcomes are limited by immunosuppressant toxicities and chronic graft rejection. Identifying…
2020 American Transplant Congress
Tolerant Liver Transplant Patients Have Higher Level of Y RNA Fragments in the Circulation
C. Kuscu¹, A. Wolen¹, A. Bajwa¹, C. Kuscu¹, J. Eason², B. Ramaswami³, D. Maluf¹, G. Mazariegos³, G. Chalasani³, V. Mas¹
¹Transplant Research Institute, James D. Eason Transplant Institute, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, ²James D. Eason Transplant Institute, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, ³Thomas E. Starzl Transplantation Institute, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA
*Purpose: Tolerance post transplantation continue to be the ultimate goal in transplantation. Circulating small RNAs are one of the best candidates for biomarker studies. To…
2020 American Transplant Congress
A Proof-of-Principle Study to Evaluate Autologous Hematopoietic Stem Cell Transplantation for Allogeneic Organ Transplant Tolerance (ASCOTT)
A. Chruscinski¹, S. Juvet¹, S. Moshkelgosha¹, E. Renner¹, L. Lilly¹, N. Selzner¹, C. Bredeson², O. Adeyi¹, S. Fischer¹, A. Demetris³, J. Zhang¹, M. Epstein¹, A. Clement², K. Khalili¹, Z. Galvin¹, A. Humar¹, T. Kim¹, K. Tinckham¹, T. Yi¹, G. Levy¹, H. Atkins²
¹Multi-Organ Transplantation, University Health Network, Toronto, ON, Canada, ²The Ottawa Hospital, Ottawa, ON, Canada, ³University of Pittsburgh, Pittsburgh, PA
*Purpose: Long-term survival of recipients of solid organ transplants is limited by chronic rejection, disease recurrence and immunosuppression-induced toxicity. Self-tolerance is established after autologous hematopoietic…
2020 American Transplant Congress
Unique Genomic & Proteomic Profile of Liver Mesenchymal Stromal Cells is Associated with Their Superior Immunomodulatory Properties
F. Yigitbilek, W. D. Park, N. Abrol, M. D. Stegall, T. Taner
Transplant Center, Mayo Clinic, Rochester, MN
*Purpose: Investigating mechanisms of liver allografts’ relative tolerance, we recently reported that liver mesenchymal stromal cells (L-MSC) are superior in their capacity to inhibit alloimmune…
2020 American Transplant Congress
Intra-Lymph Node Injection of Microparticles Reprograms the Laminin Stromal Network to Prolong Allograft Survival
C. M. Paluskievicz¹, Y. Xiong¹, W. Piao¹, M. Willson-Shirkey¹, H. Eppler², C. M. Jewell², J. S. Bromberg¹
¹U Maryland, Baltimore, MD, Baltimore, MD, ²U Maryland, College Park, MD, College Park, MD
*Purpose: Microparticles (MPs) carrying peptide antigen with immune signals can be directly delivered to lymph nodes (LNs) to induce pro-inflammatory or anti-inflammatory responses. We hypothesized…
2020 American Transplant Congress
Cmv Infection Sensitizes Transplant Recipients by Promoting Alloreactive T Cell Response
S. Yu, A. Dangi, X. Luo
Nephrology/Medicine, Duke University, Durham, NC
*Purpose: Cytomegalovirus (CMV) infection has been associated with allograft rejection in immunosuppressed transplant recipients. We have previously shown that acute CMV infection impairs the induction…