2015 American Transplant Congress
ALDH Expression in Facilitating Cells Plays a Critical Role in Regulatory T Cell Induction and GVHD Prevention
Graft-vs-host disease (GVHD) is a major source of morbidity in hematopoietic stem cell transplantation (HSCT), limiting its application to treat nonmalignant hematopoietic diseases and to…2015 American Transplant Congress
Noncanonical Anergic Alloreactive B Cells in Transplantation Tolerance
Depart of Surgery, University of Chicago, Chicago.
The observation that operationally tolerant patients (TOL) display higher numbers of blood B cells and a B cell gene signature compared to stable kidney allograft…2015 American Transplant Congress
TGFβ Production By B Cells Is Critical for Transplant Tolerance Induction
Regulatory B cells (Bregs) have been shown to play a critical role in immune homeostasis and in autoimmunity models. We have recently demonstrated that combined…2015 American Transplant Congress
TIM-4 Identifies IL-17 Expressing Pro-Inflammatory Be-17 Cells That Promote Allograft Rejection
Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA.
We identified TIM-1 as an inclusive marker for IL-10+ regulatory B cells (TIM-1+ Bregs), which prolong islet allograft survival (GS). We recently found that TIM-4,…2015 American Transplant Congress
Controlling Alloreactive B Cell Responses in Sensitized Recipients With CTLA-4Ig
Sensitized recipients are defined by the presence of pre-transplant donor-specific antibodies and have significantly poorer graft outcomes compared to unsensitized recipients despite efforts to desensitize.…2015 American Transplant Congress
The Spleen Is the Primary Site for Breg Induction and Is Required for Anti-TIM-1 Mediated Tolerance
Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA.
B cells can exhibit potent IL-10-dependent regulatory (Breg) activity. IL-10-enriched Bregs can transfer tolerance in auto and allo-immune models. We showed that TIM-1 is an…2015 American Transplant Congress
Hepatic Stellate Cells Directly Inhibit B Cells Via PD-L1
Hepatic stellate cells (HSCs) account for one third of the nonparenchymal cells in the liver, which are considered to be critical in maintaining the immunoprivileged…2015 American Transplant Congress
B Cell Depletion With an Anti-CD20 Antibody Enhances Alloreactive Memory T Cell Response After Transplantation
Pre-transplant B cell depletion in NHP with Rituximab (IgG1 anti-CD20 mAb) combined with cyclosporin A has been shown to promote the survival of islets allografts.…2015 American Transplant Congress
Inhibition of RhoA Pathway-Related Macrophage Functions Abrogates Chronic Rejection of Cardiac Allograft
Objective. Chronic rejection remains the main obstacle in the long-term success of organ transplantation. The long-term survival of allografted hearts is limited by a progressive…2015 American Transplant Congress
Role of Innate Immune Cells in Chronic Allograft Loss and Novel Strategies to Target Them
Despite remarkable improvements in short term transplant survival, the long-term outcome of allografts remains poor in the clinic, and most transplants are eventually lost due…
American Transplant Congress abstracts