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American Transplant Congress abstracts

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Articles tagged "T cells"

  • 2016 American Transplant Congress

    Polyclonal Treg Adoptive Therapy for Control of Subclinical Kidney Transplant Inflammation (TASK Pilot Trial).

    S. Chandran, Q. Tang, M. Sarwal, Z. Laszik, A. Putnam, T. Sigdel, E. Tavares, J. Bluestone, F. Vincenti.

    UCSF, San Francisco, CA.

    Purpose: Early renal graft inflammation is associated with progressive fibrosis & late dysfunction. Treg therapy can reverse established inflammation in animal models. We conducted a…
  • 2016 American Transplant Congress

    The Impact of Allograft Rejection on DNA Methylation After Kidney Transplantation.

    K. Boer, E. de Wit, D. Hesselink, L. Hofland, M. Betjes, C. Baan.

    ErasmusMC, University Medical Center Rotterdam, Rotterdam, Netherlands.

    Introduction DNA methylation is a well-known epigenetic mechanism which plays a critical role in cell function by regulating gene expression. Variations in DNA methylation are…
  • 2016 American Transplant Congress

    IL-17A Preactivated Mesenchymal Stem Cells (MSC-17) Are Enriched for Genes Involved in T Cell Chemotaxis to Mediate Superior Immunosuppression.

    K. Sivanathan,1,2,3 D. Rojas-Canales,1,2 S. Gronthos,4 S. Grey,5 P. Coates.1,2,3

    1School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, South Australia, Australia; 2Centre for Clinical and Experimental Transplantation, Royal Adelaide Hospital, Adelaide, South Australia, Australia; 3Centre for Stem Cell Research and Robinson Institute, School of Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia; 4Mesenchymal Stem Cell Laboratory, School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, South Australia, Australia; 5Transplant Immunology Group, Garvin Institute of Medical Research, Sydney, New South Wales, Australia.

    Human bone marrow derived MSC-17 are superior T cell immunomodulators for allotransplantation. Untreated-MSC (UT-MSC) or 5 days IFNγ (MSCγ) or IL-17A (MSC-17) treated MSC were…
  • 2016 American Transplant Congress

    Initial Experience with Donor Specific Tregs in Kidney Transplantation.

    J. Markmann,1 E. Guinan,2 E. Geissler,3 G. Cole,2 S. Germana,1 J. Kim,1 B. Sawitzki.4

    1Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA; 2Hematology/Oncology, Dana-Farber Cancer Center, Boston, MA; 3Surgery, Universitätsklinikum Regensburg, Regensburg, Germany; 4Institute of Medical Immunology, Charite Universitätsmedizin, Berlin, Germany.

    Systematic multicenter clinical evaluation of regulatory cells is being conducted by the EU supported ONE Study trial in which each site is administering a different…
  • 2016 American Transplant Congress

    High PD-L1/CD86 MFI Ratio and IL-10 Secretion Characterize Maturation-Resistant Human Regulatory Dendritic Cells (DCregs) Generated for Clinical Testing in Transplantation.

    A. Zahorchak,1 L. Butterfield,2,3 C. Macedo,1 D. Hamm,4 D. Metes,1,3 A. Thomson.1,3

    1Surgery, Thomas E. Starzl Transplantation Institute, Pittsburgh; 2Medicine, University of Pittsburgh, Pittsburgh; 3Immunology, University of Pittsburgh, Pittsgurgh; 4Adaptive Biotech, Seattle.

    Regulatory dendritic cells (DCregs) have shown considerable potential for safe and effective prolongation of allograft survival in pre-clinical models. In humans, DCregs with purity >84%…
  • 2016 American Transplant Congress

    HLA Identical Renal Transplant Tolerance Using Donor Hematopoietic Stems Cells (DHSC): Role of Immunoregulation.

    J. Leventhal,1 J. Mathew,1 D. Salomon,2 S. Kurian,2 J. Friedewald,1 L. Gallon,1 X. Huang,1 A. Tambur,1 Y. Kanwar,1 J. Charette,1 M. Abecassis,1 J. Miller.1

    1Surgery - Comprehensive Transplant Center, Northwestern University, Chicago, IL; 2The Scripps Research Institute, La Jolla, CA.

    Purpose: Despite being a “perfect match”, HLA-identical kidney transplants (HLA-Id KTx) are rejected without sufficient immunosuppression (IS), and hence can also benefit from tolerance induction.…
  • 2016 American Transplant Congress

    Rapid Detection of Urinary CXCL9 as a Diagnostic and Prognostic Tool for Managing Acute Cellular Rejection (ACR) in Kidney Transplantation.

    I. Gandolfini,1 C. Harris,1 C. Purroy,1 V. Nair,1 J. Reid-Adam,1 O. Bestard,2 P. Heeger.1

    1Icahn School of Medicine at Mount Sinai, New York, NY; 2Bellvitge University Hospital, Barcelona, Spain.

    Urinary (u) CXCL9 protein expression can noninvasively diagnose ACR and serial measurements during CNI withdrawal indicate that elevations in uCXCL9 detect subclinical rejection. How elevated…
  • 2016 American Transplant Congress

    Immunological Ageing-Related Expansion of Highly Differentiated CD4+CD28null T Cells Is Associated with a Lower Risk for Early Acute Rejection After Renal Transplantation.

    B. Dedeoglu, R. Meijers, M. Klepper, D. Hesselink, C. Baan, N. Litjens, M. Betjes.

    Internal Medicine, Nephrology and Transplantation, Erasmus MC, University Medical Centre, Rotterdam, Netherlands.

    Background: End-stage renal disease patients have a dysfunctional, prematurely aged peripheral T-cell system. Here we hypothesized that the degree of premature T-cell ageing before kidney…
  • 2016 American Transplant Congress

    Necroptosis Is Involved in CD4+ T-Cell Mediated Microvascular Endothelial Cell Death and Chronic Cardiac Allograft Rejection.

    C. Kwok,1,2 N. Montwill,1,2 A. Pavlosky,1,2 A. Haig,2 X.-Y. Huang,1 A. Jevnikar,1,3 Z.-X. Zhang.1,2,3

    1Matthew Mailing Centre for Translational Transplant Studies, London Health Sciences Centre, London, Canada; 2Department of Pathology and Laboratory Medicine, Western University, London, Canada; 3Department of Medicine, Western University, London, Canada.

    Heart transplantation is potentially the only viable option for patients with end-stage heart failure. Despite advances in immunosuppressive therapies, cardiac allograft chronic rejection is a…
  • 2016 American Transplant Congress

    Tracking of Endogenous Graft-Reactive Tregs Reveals Their Peripheral Enrichment During Transplantation Tolerance.

    J. Young,1 J. Chen,1 M. Miller,1 D. Yin,1 J. Moon,2 M.-L. Alegre,1 A. Chong.1

    1Surgery and Medicine, University of Chicago, Chicago, IL; 2Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA.

    Purpose: Our goal for this study was to determine the relative fates of endogenous Foxp3- conventional (Tconv) and Foxp3+ regulatory T cells (Tregs) specific for…
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