2018 American Transplant Congress
Immunomodulation of Alloantibody Responses
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
We have shown that i.v. exposure to MHC-mismatched donor PBMC using a novel, mild conditioning protocol results in B-cell tolerance with transient T-cell unresponsiveness. Here…2018 American Transplant Congress
CD8-Expressing Transitional B Cells Dominate B Cell Reconstitution in Transplanted Monkeys Receiving Mixed Chimerism Conditioning
Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA.
IntroductionTolerance of heart or lung allografts have been achieved for the first time in nonhuman primates (NHPs) using a mixed chimerism conditioning regimen. However, the…2018 American Transplant Congress
Donor-Specific B-Cell Tolerance after Successful ABO Blood Type Incompatible (ABOi) Living Donor Liver Transplantation (LDLT)
Background/purposeABO blood type-incompatible (ABOi) liver transplantation is one of the strategies employed to overcome the shortage of donor. By using the Rituximab and plasm exchange,…2018 American Transplant Congress
Prospective Multicenter Validation of Human Transitional B Cell Cytokines as a Predictive Biomarker in Renal Transplantation
1UPMC, Pittsburgh; 2UCL, London, United Kingdom.
In renal transplantation, non-invasive biomarkers are needed to identify patients at risk for poor outcomes and guide pre-emptive therapy. Here, we assessed B cell cytokines…2018 American Transplant Congress
Reduction in Circulating CD19+CD24+CD27+ Regulatory B Cell Frequency Predicts Acute Rejection in Liver Transplant Patients
Liver Transplant Center, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Background: Accumulating evidence suggests that regulatory B cells (Bregs) play an important role in modulating inflammation and autoimmune diseases. However, whether Bregs regulate acute liver…2018 American Transplant Congress
TACI-Ig as a Desensitization Agent in a Rat Model of Antibody Mediated Rejection
We examined the effect of APRIL/BLyS blockade on B cell lineages & donor specific antibody (DSA) in preclinical rodent model as a novel desensitization strategy.…2018 American Transplant Congress
Prevention of an Adaptive Immune Response by FDA-Approved Immunosuppressive Agents in Baboons with Pig Artery Patch Xenografts
Background: In the pig-to-baboon artery patch model with no immunosuppressive therapy, a graft from a GTKO pig elicits a significant anti-nonGal IgG response, indicating sensitization…2018 American Transplant Congress
Ex Vivo-Expanded Human CD19+CD73–CD25+CD71+TIM-1+ B Regulatory Cells Can Prolong Allograft Survival in a Humanized Mouse Model of Skin Transplantation and Are Dependent on TIM-1-Mediated Regulation of STAT3 Signaling
The importance of B regulatory cells (Breg) in both health and disease has rapidly become evident over the last decade. Breg are able to control…2018 American Transplant Congress
Peripheral but Not Follicular T Helper Cells Are Activated by Allogeneic Human Endothelial Cells under IRI-Like Conditions and Promote Donor Specific Antibody
Background: Perioperative ischemia reperfusion injury (IRI) is a consequence of solid organ allograft transplantation that primes the graft for future rejection.Methods: We developed an in…2018 American Transplant Congress
Tacrolimus-Based Maintenance Immunosuppression Decreases the Number of Peripheral Blood Transitional B Cells in Nonhuman Primates
Center for Transplantation Sciences, Mass General Hospital, Boston, MA.
IntroductionElevated frequencies of transitional B cells have been reported in patients tolerant of renal allografts, as defined by stable graft function after withdrawal of immunosuppression…
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