Articles tagged "Tolerance"

2020 American Transplant Congress
Intra-Lymph Node Injection of Rapamycin-Alloantigen Microparticles Regulates Dendritic Cell Antigen Presentation
C. M. Paluskievicz¹, Y. Xiong¹, W. Piao¹, M. Willson-Shirkey¹, H. Eppler², C. M. Jewell², J. S. Bromberg¹
¹U Maryland, Baltimore, MD, ²U Maryland, College Park, MD
*Purpose: Microparticles (MPs) carrying peptide antigen with immune signals can be directly delivered to lymph nodes (LNs) via intra-LN injections to shape both pro-inflammatory or…
2020 American Transplant Congress
Electroacupuncture Promotes Induction of Long-Term Allograft Survival by Enhancing Lymphatic Migration of CD4+Foxp3+ Tregs via Upregulating Their LTalpha1beta2 Expression
H. Liu, Y. Chen, F. Qiu, Z. Dai
Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
*Purpose: Induction of long-term transplant survival without continuous global immunosuppression is a highly desired goal in transplantation. Electroacupuncture (EA) has been shown to regulate immunity…
2020 American Transplant Congress
Fate of Donor-Derived Regulatory Dendritic Cells (DCreg) and Augmentation of Host Regulatory T Cells Following Their Infusion Into Prospective Living-Donor Liver Transplant Recipients
A. W. Thomson, C. Macedo, A. F. Zahorchak, X. Gu, A. Humar, F. G. Lakkis, M. A. Styn, D. M. Metes
Starzl Transplantation Institute, Pittsburgh, PA
*Purpose: Our purpose was to ascertain the fate of ex vivo-generated donor-derived DCreg and their influence on host T cells prior to transplant in a…
2020 American Transplant Congress
Allograft Parenchymal Cell Expression of Tlr9 is Required for Endogenous Donor-Reactive Memory Cd8 T Cell Activation within High-Risk Cardiac Allografts to Mediate Ctla-4 Ig Resistant Graft Rejection
D. Ueda, H. Tsuda, S. Miyairi, R. L. Fairchild
Lerner Reserch Institute, Cleveland Clinic, Cleveland, OH
*Purpose: Increased ischemia-reperfusion graft inflammation provokes activation of endogenous donor-reactive memory CD8 T cells within complete MHC-mismatched cardiac allografts at 24 hrs after graft reperfusion…
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…