2022 American Transplant Congress
Differing Gene Expression Profiles and Signaling Pathways Observed Between Alloreactive and Tolerant T Cells in a Recipient Following Bilateral Orthotopic Lung Transplant (BOLT) and Bone Marrow Transplant (BMT) from the Same Cadaveric UNOS Donor
UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA
*Purpose: Primary immunodeficiency (PID) patients may develop pulmonary complications, and most are ineligible for either BOLT or BMT due to futility. A prospective trial in…2022 American Transplant Congress
Characterization Of Gzmb+ Bregs Using Single Cell Rnaseq
CRT2I INSERM UMR1064, Nantes, France
*Purpose: Granzyme B (GZMB)+ B cells are increased in blood from transplanted patients who tolerate a kidney graft without immunosuppressive treatment. We demonstrated that these…2022 American Transplant Congress
Leveraging Car T Cells To Achieve Desensitization And Enable Transplantation
UNIVERSITY OF PENNSYLVANIA, PHILADELPHIA, PA
*Purpose: Pre-existing allo-antibodies (allo-Abs), that preclude transplant due to the risk of hyperacute rejection, lead to prolonged wait times and high mortality rates. Current desensitization…2022 American Transplant Congress
Role of CD8+T Cells Exhaustion in Long Term Spontaneous Acceptance of Mouse Kidney Allograft
*Purpose: CD8+ T cells exhaustion has been shown to promote chronic viral infection and tumor development, resulting from long term exposure to foreign antigen. We…2022 American Transplant Congress
Long Term Follow-Up of a Phase 2 Clinical Trial to Induce Tolerance in Living Donor Kidney Transplant Recipients
*Purpose: 37 subjects were transplanted in a phase 2 protocol based upon tolerogenic CD8+/TCR-facilitating cells (FCR001) to induce tolerance in recipients of living donor kidney…2022 American Transplant Congress
Neuropilin-2 is a Novel Checkpoint Inhibitor That is Required for Long-Term Allograft Survival
Boston Children's Hospital, Boston, MA
*Purpose: We have previously reported that Neuropilin (NRP) 2-associated signaling events modulate PI3K/mTOR/Akt activity in several human cell lines. While intrinsic NRP1 activity has been…2022 American Transplant Congress
Tolerance of Allogeneic Kidneys with Durable (>200 Days) Multilineage Chimerism and Bone Marrow Engraftment in Cynomolgus Macaques
*Purpose: We have previously reported that a regimen including anti-CD3 immunotoxin, 45 days of cyclosporine, and pre-transplant total body irradiation (TBI) promoted tolerance of kidney…2022 American Transplant Congress
A Signature of Tolerance Which Identifies Subclinical Rejection-Free Patients at One Year After Kidney Transplantation
*Purpose: Spontaneous and rare cases of patients undergoing a functional renal transplant in the absence of immunosuppression represent a particular situation of immune tolerance. We…2022 American Transplant Congress
Single-Cell CyTOF Profiling of Pediatric Immune Responses to Organ Transplantation Reveals a Novel Subpopulation of T Cells Significantly Correlating with Graft Health
1Stanford University, Palo Alto, CA, 2Rho, Durham, NC, 3National Institutes of Health, Bethesda, MD
*Purpose: Solid organ transplant is lifesaving for children with end-stage heart, liver, or kidney disease. Protection of the transplanted organ from rejection requires long-standing immunosuppression.…2022 American Transplant Congress
Chimeric Antigen Receptor Regulatory T Cells (CAR-Tregs) Provide Significantly Greater Modulation of Alloimmune Responses Than Alternative Alloantigen-Specific Treg Strategies
1King's College London, London, United Kingdom, 2Quell Therapeutics, London, United Kingdom
*Purpose: Conferring alloantigen-specificity to ex vivo expanded CD4+CD25+Foxp3+ Tregs increases their capacity to counteract effector alloimmune responses following adoptive transfer into transplant recipients. This has…
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