Articles tagged "Tolerance"

2022 American Transplant Congress
Exosomal TGFbeta:LAP as Immunosuppressive Mediator of Allo-Tolerance
W. Burlingham¹, E. Jankowska-Gan², J. Fechner³, C. Little², J. Sullivan⁴, D. Foley¹
¹University of Wisconsin, Madison, WI, ²Surgery-Transplant Division, University of Wisconsin, Madison, WI, ³Surgery-Transplant Division, University of Wisconsin-Madison, Madison, WI, ⁴Surgery, University of Wisconsin, Madison, WI
*Purpose: TGFβ has long been known as a key component in tolerance mediated by Treg cells. Here we show that, unlike IL10, but like CD39/CD73,…
2022 American Transplant Congress
The Promise Of Tolerance In Living Donor Kidney Transplant (LDKT): A Retrospective, Real-world Assessment Of The Safety And Efficacy Of LDKT With FCR001 Investigational Cell-therapy Compared With Standard Of Care (SOC)
N. Krieger¹, J. R. Leventhal², B. Ho³, M. Richards⁴, D. Schaumberg⁴, S. Ildstad⁵, D. Axelrod⁶
¹Talaris Therapeutics, Inc, Wellesley, MA, ²SURGERY, Northwestern Medicine, Chicago, IL, ³Comprehensive Transplant Ctr, Chicago, IL, ⁴Evidera, Bethesda, MD, ⁵Talaris Therapeutics, Inc., Louisville, KY, ⁶University of Iowa, Iowa City, IA
*Purpose: FCR001 (FCR) is a cell therapy derived from mobilized donor PBMCs including hematopoietic progenitor cells, facilitating cells, and αβ T cells, intended to establish…
2022 American Transplant Congress
cDC1-Mediated Prolongation of Cardiac Allograft Survival and Alloantigen Induced Transcriptional Programming
S. L. Schroth, E. B. Thorp
Pathology, Northwestern Feinberg School of Medicine, Chicago, IL
*Purpose: Heart transplantation is currently the only treatment for advanced stage heart failure. While patient survival after transplantation has improved acutely, the same cannot be…
2022 American Transplant Congress
Donor-Specificb Cell Dysfunction and Suppressive Ability Are Differentially Induced in Cob-Mediated Transplantation Tolerance
S. Durgam¹, D. Yin¹, M. Alegre², A. Chong¹
¹Surgery, section of transplant immunology, University of Chicago, Chicago, IL, ²Medicine, section of rheumatology, University of Chicago, Chicago, IL
*Purpose: B cells in mice tolerized to fully mismatched heart allografts with anti-CD154+donor spleen cells (CoB) are intrinsically dysfunctional and unable to differentiate into germinal…
2022 American Transplant Congress
Induction of Tolerance After Intestinal Transplantation in a Porcine Model
S. Merl, R. Jones, B. Chen, M. Sykes, K. Yamada, J. Weiner
Columbia Center for Translational Immunology, Columbia University, New York, NY
*Purpose: We describe a case of tolerance from our study investigating multilineage chimerism under immunological conditions after intestinal transplantation using a porcine model with defined…
2022 American Transplant Congress
Analytical Evaluation and Comparison to STR of an Accurate and Sensitive Microchimerism Monitoring Tool for Liver Transplant Recipients
A. S. Kothari¹, C. Egidio¹, J. Miles², N. Gulbahce¹, S. Dholakia³, M. Grskovic⁴
¹Clinical Development, CareDx, South San Francisco, CA, ²Medical Affairs, CareDx, Brooklyn, NY, ³Medical Affairs, CareDx, South San Francisco, CA, ⁴CareDx, Brisbane, CA
*Purpose: Peripheral blood chimerism is associated with clinically relevant events post liver transplantation (LT). Accurate quantification of donor chimerism in LT recipients with ultra-sensitive chimerism…
2022 American Transplant Congress
Experience with Covid-19 Infection and Vaccination in Combined Kidney/HSCT Recipients
M. Gibson¹, D. Belshe¹, G. Gregory¹, S. Tanna¹, M. Ison¹, S. Ildstad², J. R. Leventhal¹
¹Northwestern University, Chicago, IL, ²University of Louisville, Louisville, KY
*Purpose: Kidney transplant(KTx) recipients are at increased risk of COVID-19 related complications. KTx pts who have undergone therapy to induce tolerance are a unique cohort…
2022 American Transplant Congress
Gene Profiling to Distinguish Mechanisms of Liver Allograft Rejection and Acceptance in Cynomolgus Monkey
H. Sakai¹, E. Berglund¹, S. Chaudhry¹, Y. Kato¹, E. Duggan¹, J. Weiner¹, P. Alonso-Guallart¹, N. Llore¹, K. Brustle¹, J. Stern¹, B. Piegari¹, D. Ekanayake-Alper¹, M. Martinez², G. Pierre¹, M. Danton¹, S. Kofman¹, D. Ordanes¹, D. Hajosi¹, J. Lefkowitch³, A. Iuga¹, T. Kato⁴, A. Griesemer¹
¹Columbia Center for Translational Immunology, Columbia University, New York, NY, ²Department of Pediatrics, Columbia University, New York, NY, ³Departments of Pathology and Cell Biology, Columbia University, New York, NY, ⁴Department of Surgery, Columbia University, New York, NY
*Purpose: Liver is an immune regulatory organ. Spontaneous resolutions from rejection have been seen in our orthotopic cynomolgus monkey liver transplant models for tolerance induction…
2022 American Transplant Congress
Characterization of GZMB+ Bregs Transcriptome and Their Impact on Target Cells in Single-Cell RNA-seq
N. Sailliet, H. Le Mai, A. Dupuy, F. Cynthia, M. Chesneau, J. Poschmann, R. Danger, S. Brouard
CRTI- INSERM UMR 1064, Nantes, France
*Purpose: During the inflammatory process, the immune system capacity to regulate itself is mandatory to balance effector positive feedback, avoid allergies and autoimmunity. Different subsets…
2022 American Transplant Congress
Long-Term Kidney Allotransplant Acceptance is Defined by a Shift from a T Cell to a B Cell Rich Immune Microenvironment Within the Graft
E. S. Szuter¹, T. Yokose¹, M. T. Guinn¹, J. Ge², I. Rosales³, B. Kwon⁴, P. S. Russell¹, A. Cuenca², D. Kreisel⁵, P. Sage⁶, J. C. Madsen¹, R. B. Colvin³, A. Alessandrini¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Department of Surgery, Boston Children's Hospital, Boston, MA, ³Department of Pathology, Massachusetts General Hospital, Boston, MA, ⁴Harvard College, Cambridge, MA, ⁵Department of Surgery, Washington University, St. Louis, MO, ⁶Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Boston, MA
*Purpose: Mouse kidney allografts are spontaneously accepted in select, fully-mismatched donor-recipient strain combinations, such as DBA/2J to C57BL/6 (B6). Tolerant renal grafts develop aggregates of…