2020 American Transplant Congress
Single Cell Gene Profiling Highlights Novel B Cell Populations Associated with the Development of Bronchiolitis Obliterates Syndrome after Lung Transplantation
*Purpose: The occurence of bronchiolitis obliterans syndrome (BOS) accounts for a poor long term prognosis after lung transplantation (LTx). Despite immunosuppressive T cell-targeting therapies the…2020 American Transplant Congress
New Everolimus Administration Targeting the Prevention of the Development of Antibody-Mediated Rejection Considering the Comparison of Growth and Survival in IgG and IgM Memory B Cells
*Purpose: Some reports indicated that immunoglobulin (Ig) M antibodies corresponding to donor-specific antigen in addition to IgG antibodies are closely involved in the activation of…2020 American Transplant Congress
HLA-Antibody Develops Preferentially in Healthy Subjects with a T-bethiB Cell Response to Vaccine
University of Alabama, Birmingham, AL
*Purpose: Bystander B cell differentiation into antibody (Ab) secreting cells (ASCs) may augment alloimmunity in the HLA-sensitized patient. Recently, a population of FcrL5+IgDnegB cells that…2020 American Transplant Congress
Anti-Thymocyte Globulin Promotes Tfh Cells Differentiation and Alloantibody Production
Transplantation Research Center, Brigham and Women's Hospital, Boston, MA
*Purpose: Antibody-mediated rejection is a major cause of long-term graft loss. T follicular helper (Tfh) cell is CD4+ T cell subset that is specialized in…2020 American Transplant Congress
Non-Human Primate B Cells Into Regulatory B Cells by Activation with CpG
*Purpose: We previously generated Toll like receptor (TLR)-activated B cells in rodent settings. These B cells can suppress T cell proliferation via in vitro mixed…2020 American Transplant Congress
ABO Self-Tolerance in a Mouse Model: Evidence of Tolerance at B Cell but Not T Cell Level
Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
*Purpose: We showed that human infants become tolerant to donor A/B-antigens (Ag) after ABO-incompatible heart transplantation (ABOi-HTx) by mechanisms not well-defined. To expand ABOi-HTx effectively…2020 American Transplant Congress
Recipient Expression of C-Type Lectin Receptor Mincle Promotes Rapid T Cell Homeostatic Recovery Following Antibody Mediated Lymphoablation
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: Antibody-mediated lymphocyte depletion is widely used in transplantation. We recently established that T cell recovery in mouse heart allograft recipients treated with anti-thymocyte globulin…2020 American Transplant Congress
The Role of Antigen Presentation in B Regulatory Cell Function
1Boston Children's Hospital, Boston, MA, 2Massachusetts General Hospital, Boston, MA
*Purpose: B regulatory cells (B regs) represent a subset of B cells with non-canonical regulatory function. The majority of effort has been focused on the…2020 American Transplant Congress
Targeting the CD40/CD40L Axis in Sensitized Nonhuman Primate Allotransplantation
*Purpose: Blockade of the CD28/B7 costimulation pathway has shown great promise as part of desensitization and maintenance immunosuppression regimens in our sensitized nonhuman primate model.…2020 American Transplant Congress
Transcriptome-Based Study of Tim-1- B Cells and Tim-1+ Regulatory B Cells
Center for Transplant Science, MGH, Boston, MA
*Purpose: Tim-1 signaling has an important role in maintaining the function of Regulatory B cells. Our previous study suggested Tim-1+ Bregs can prolong the survival…
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