2016 American Transplant Congress
The Role of B Cells in Liver Transplant Tolerance.
Scarcely one would argue that donor-specific B cells and antibodies contribute to rejection of transplants. However, studies published in the past few years have provided…2016 American Transplant Congress
Inflammatory Conditions Switch the Effect of MSC on B Cells from Pro-Tolerogenic to Anti-Proliferative.
The immunomodulatory capacity of mesenchymal stem cells (MSC) makes them a promising therapeutic tool in transplantation. MSC are recently gaining interest for their immunomodulatory effects…2016 American Transplant Congress
Belatacept Does Not Inhibit Plasmablast Formation Supported by Follicular T Helper Cells, but Favors the Development of Transitional Regulatory B Cells in Kidney Transplant Patients.
Since the costimulatory inhibitor belatacept effectively blocks T-B cell interaction in animal transplant models, we studied the functional follicular T helper cells (TFH)-B cell interaction…2016 American Transplant Congress
Recall Alloantibody Production Is Driven by CD138+ Cells Proliferating in the Spleens: An Indication for Long-Lived Plasma Cell Activities and Potential Therapeutic Target.
Comprehensive Transplantation Center/Surgery, Cedars-Sinai Medical Center, Los Angeles, CA.
Background Donor-specific antibodies (DSA) generated in recall responses are produced by long-lived plasma cells (L-PC) residing in the bone marrows (BM). Mechanisms of L-PC activation,…2016 American Transplant Congress
IL-10 Expression of In Vitro Activated B Cells as A Biomarker for B Cell Tolerance.
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
Background: A significant role for regulatory B cell has been suggested in kidney transplant recipients who achieved operational tolerance while receiving conventional immunosuppression. We studied…2016 American Transplant Congress
Targeting IFN-g-Expressing TIM-4+ B Effector (Beff) Cells as a Novel Strategy to Prevent Allograft Rejection.
1University of Pittsburgh, Pittsburgh; 2Harvard Medical School, Boston.
B cell depletion can augment or inhibit auto- and allo- immune responses in humans and mice without altering Ig levels. This is likely due to…2016 American Transplant Congress
Alloantibody Suppression by Bruton Tyrosine Kinase Antagonist Ibrutinib Is Associated with a Moderate Splenic B-Cell Reduction.
Comprehensive Transplantation Center/Surgery, Cedars-Sinai Medical Center, Los Angeles, CA.
Background Bruton tyrosine kinase (Btk) is specifically required for activation of the B-cell antigen receptor signaling pathway that contributes to the initiation and maintenance of…2016 American Transplant Congress
Acquired Down-Regulation of B Cell Function Induced by Donor Blood Group Antigens After ABO-Incompatible Kidney Transplantation.
Background: The long-term of B cell immunobiology against donor blood group antigen has not been elucidated in ABO incompatible kidney transplantation (ABOi KTx).Methods: The antibody…2016 American Transplant Congress
B Cell Signature Profiling in Kidney Transplant Patients on Thymoglobulin.
Purpose: B cell subsets could be used as biomarkers to modulate therapy regimens in kidney transplant patients. B cell subsets occur with varying proportions within…2016 American Transplant Congress
HLA Antibody Clonality and Epitopes Dictate Complement Activation.
Background: Alloimmunization results in production of polyclonal donor specific antibodies (DSA) against human leukocyte antigens (HLA), which mediate endothelial cell activation, leukocyte recruitment, and complement…
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