Articles tagged "Tolerance"

2018 American Transplant Congress
Ex Vivo Expanded Regulatory T Cells Combined with Short-Term Costimulation Blockade Prevent Rejection of Vascularized Composite Allografts
B. Oh,¹ G. Furtmüller,¹ M. Grzelak,¹ L. Vuong,² M. Iglesias,¹ M. Fryer,¹ D. Cooney,¹ W. Lee,¹ G. Raimondi,¹ G. Brandacher.¹
¹Plastic and Reconstructive Surgery, Johns Hopkins SOM, Baltimore; ²Washington University in St. Louis SOM, St. Louis.
[Background] Reconstructive transplantation represents a valid therapeutic option after devastating tissue loss. Routine clinical application, however, is hampered by the toxicity of long-term maintenance immunosuppression.…
2018 American Transplant Congress
IL-10 Requirement in In Vitro Expanded Breg-Mediated Allograft Tolerance is Tissue Specific
C. Dai, K. Lee, L. Kojima, K. Deng, S. Kimura, C. Rickert, H. Yeh, J. Markmann.
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
Introduction:Regulatory B cells (Bregs) have shown several multiple mechanisms of suppression, including Treg induction and IL-10 production. Consistent with work of other groups on Breg…
2018 American Transplant Congress
The Role of pDCs in Formation of Treg-Rich Organized Lymphoid Structures in Spontaneously Accepted Murine Kidney Allografts is Dependent on Mismatching of MHC Class II Molecules at the H2-I-A^b Locus
T. O'Shea,^1,2 C. Yang,¹ I. Rosales,² N. Oh,¹ D. Ndishibandi,^1,2 T. Ashry,¹ P. Russell,¹ J. Madsen,¹ R. Colvin,² A. Alessandrini.^1,2
¹Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, MA; ²Department of Pathology, Massachusetts General Hospital, Boston, MA.
Introduction: Our lab has demonstrated that murine kidney allografts are spontaneously accepted in specific donor-recipient strain combinations. Histologic examination of spontaneously accepted DBA/2J (DBA) kidneys…
2018 American Transplant Congress
Hsp70 Inhibitor Could Induce Transplant Tolerance through mTORC2/Akt Pathway
G. Gu, T. Lu, N. Xu, Q. Xia.
Department of Liver Surgery, Renji Hospital, Affiliated by Shanghai Jiaotong University School of Medicine, Shanghai, China.
Hsp70, a highly conserved protein, has been shown to induce strong immune responses and to reduce inflammation. However, its mechanism is not clear, especially in…
2018 American Transplant Congress
Immunomonitoring of Operational Tolerance in Intestinal Transplantation
O. Aguirre, B. Houlihan, T. Fishbein, A. Kroemer.
Medstar Georgetown Transplant Institute, Medstar Georgetown University Hospital, Washington, DC.
A. The purpose of this study is to immunocharacterize the first reported case of intestinal transplant (ITx) operational tolerance, in parallel with a stable ITx…
2018 American Transplant Congress
Central Role of Mef2 Transcription Factors in Regulation of Foxp3 Expression and Treg Function
A. Samanta,¹ L. Wang,¹ R. Han,¹ W. Hancock.^1,2
¹CHOP, Philadelphia; ²UPenn, Philadelphia.
Foxp3+ Tregs express 4 class IIa Hdac enzymes (Hdac4, 5, 7 & 9) with little or no catalytic activity and yet when deleted, at least…
2018 American Transplant Congress
A Phase-I Clinical Trial of Donor-Derived MIC Cell Infusion for the Induction of Donor-Specific Hyporesponsiveness after Living Donor Kidney Transplantation (TOL-1 Study)
C. Morath,¹ A. Schmitt,² C. Kleist,³ V. Daniel,³ G. Opelz,³ C. Süsal,³ F. Fälble,¹ C. Sommerer,¹ L. Wang,² M. Zeier,¹ M. Schmitt,² M. Schaier,¹ P. Terness.³
¹Nephrology, University of Heidelberg, Heidelberg, Germany; ²Hematology, University of Heidelberg, Heidelberg, Germany; ³Transplant Immunology, University of Heidelberg, Heidelberg, Germany.
MIC cells are donor-derived monocytes that gain immunosuppressive properties after incubation with the proliferation inhibitor mitomycin C.PBMCs were harvested from living donors by leukapheresis and…
2018 American Transplant Congress
A Novel Conditioning Approach to Establish Chimerism Using Manipulation of JAK-STAT Pathways
H. Xu, A. Merchak, L. Kahn, A. Chhabra, Y. Wen, Y. Huang, S. Ildstad.
Institute for Cellular Therapeutics, University of Louisville, Louisville, KY.
Hematopoietic chimerism establishes donor-specific tolerance to solid organ allografts. Targeting recipient immune cells (T, NK cells and macrophages) can effectively reduce the dose of total…
2018 American Transplant Congress
Long Noncoding RNA NEAT1 Induces Tolerogenic Dendritic Cells in Heart Transplantation
J. Wu,^1,2 Y. Zheng,^1,2 S. Li,^1,2 M. Zhang,^1,2 H. Zhang,^1,2 X. Zheng,^1,2 Y. Sun,^1,2 B. Yu.^1,2
¹Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China; ²The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang, China.
Purpose: Tolerogenic dendritic cells have been gaining interest as an efficient means of promoting antigen-specific tolerance in organ transplantation. Long noncoding RNA NEAT1 plays an…
2018 American Transplant Congress
The LncRNA MALAT1 Induces Tolerogenic DCs and Antigen Specific Tregs Subsequently Mediating Cardiac Allograft Tolerance in Mice via MiR-155/DC-SIGN/IL10 Axis
M. Zhang,^1,2 J. Wu,^1,2 H. Zhang,^1,2 M. Liu,^1,2 Y. Zheng,^1,2 X. Jin,^1,2 S. Li,^1,2 Q. Zhao,^1,2 X. Liu,^1,2 Y. Sun,^1,2 B. Yu.^1,2
¹Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China; ²The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang, China.
Background: Tolerogenic dendritic cells(DCs) by shaping T cells immunity and inducing Tregs play critical roles in the induction of allograft tolerance in transplantation. Long noncoding…