Articles tagged "T cell graft infiltration"

2021 American Transplant Congress
Anti-CD8 Immuno-PET for Non-invasive Tracking of Early Graft Rejection in a Non-human Primate Kidney Transplant Model
K. Bruestle¹, R. Tavare², F. Fredriksson¹, E. Duggan¹, F. Huang¹, B. Bhola¹, J. Giurleo², R. Foster², P. Krueger², M. Dobosz², D. Ekanayake-Alper¹, H. Sakai¹, B. Piegari¹, J. Castrillion¹, S. M. Coley¹, O. Harari², A. Mintz¹, D. Ma², A. Griesemer¹
¹Columbia University Medical Center, New York City, NY, ²Regeneron Pharmaceuticals, Inc, New York City, NY
*Purpose: Infiltration of CD8 T cells into solid organ grafts is an early sign of rejection. REGN5054 is a fully human monoclonal antibody that binds…
2021 American Transplant Congress
Utility of Follow-up Biopsies After Acute Rejection in Pediatric Kidney Transplantation
S. S. Raza¹, V. Hauptfeld-Dolejsek¹, F. Rosenblum¹, E. C. Mroczek-Musulman², D. R. Kelly², M. Seifert¹
¹Department of Nephrology, UAB School of Medicine, Birmingham, AL, ²Children’s of Alabama, Birmingham, AL
*Purpose: Treatment of acute kidney transplant rejection in children is often guided by creatinine-based estimates of GFR (eGFR) that may lack sensitivity to determine the…
2021 American Transplant Congress
Dynamic Reconstitution of Recipient Resident Memory T Cell Repertoire After Human Intestinal Transplantation
W. Jiao, M. Martinez, J. Zuber, A. Obradovic, R. Jones, E. Waffarn, Z. Wang, A. Gorur, K. Rogers, T. Kato, Y. Shen, J. Fu, M. Sykes
Columbia University, New York, NY
*Purpose: Our studies in intestinal transplant (ITx) recipients demonstrated that donor T cell blood macrochimerism(peak level ≥4%) is associated with slower graft T cell replacement…
2021 American Transplant Congress
P40 Homodimers Induce Il-15 to Promote Endogenous Donor-reactive Memory Cd8 T Cell Activation within High-risk Cardiac Allografts
H. Tsuda, A. Valujskikh, R. Fairchild
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: Longer cold ischemic storage (CIS) time prior to transplant results in increased proliferation of endogenous donor-reactive memory CD8 T cells within complete MHC-mismatched cardiac…
2021 American Transplant Congress
The Effect of the Different Donor-Derived HLA T-Cell Epitope Targets on the Development of T Cell-Mediated Rejection After Kidney Transplantation
A. Senev, E. Van Loon, M. Emonds, M. Naesens
Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
*Purpose: Many kidney allografts fail due to rejections caused by the donor and recipient HLA incompatibility. Recent studies have shown that HLA-DR and DQ mismatches…
2021 American Transplant Congress
Quilty Lesions are Associated with a Tolerance Profile in Heart Allografts Biopsies
J. Torrealba, S. Moore, S. Sathirareuangchai, L. De Las Casas, Q. Cai
Pathology, UTSW Medical Ctr, Dallas, TX
*Purpose: Previously, in 42 cardiac allograft biopsies, we demonstrated that the presence of Foxp3+ innate and TGF- β + adaptive regulatory lymphocytes in Quilty lesions…
2020 American Transplant Congress
Imaging OX40+Alloreactive T Cells Provides Early Warning of Organ Transplant Rejection
T. Hirai¹, A. Mayer², T. W. Nobashi², Z. Xiao², T. Udagawa³, K. Seo⁴, F. Simonetta⁵, J. Baker⁵, A. Cheng³, S. S. Gambhir², R. S. Negrin⁵
¹Department of Urology, Tokyo Women's Medical University, Tokyo, Japan, ²Department of Radiology, Stanford University, Stanford, CA, ³Department of Otolaryngology-Head and Neck Surgery, Stanford University, Stanford, CA, ⁴Division of Cardiovascular Medicine, Stanford University, Stanford, CA, ⁵Division of Blood and Marrow Transplantation, Stanford University, Stanford, CA
*Purpose: Diagnosis of organ transplant rejection relies upon biopsy approaches to confirm alloreactive T cell infiltration in the graft. Immuno positron emission tomography (immunoPET) utilizing…
2020 American Transplant Congress
CD11b is a Novel Alternate Receptor for CD154 During Alloimmunity
M. L. Ford, D. Liu
Emory University, Atlanta, GA
*Purpose: For decades, blockade of CD40-CD154 has been shown to be a highly effective means of inhibiting alloreactive T cell responses and inducing long-term graft…
2020 American Transplant Congress
Treg Use PD-1 for Lymphatic Migration
W. Piao¹, L. Li¹, K. Hippen², Y. Zhang³, Y. Xiong¹, V. Saxena¹, C. Paluskievicz¹, M. WillsonShirkey¹, B. Blazar⁴, L. Riella⁵, J. Bromberg⁶
¹Surgery, U of Maryland, Baltimore, MD, ²U of Minnesota, Minneapolis, MN, ³U of Maryland, Minneapolis, MD, ⁴U of Minnesota, Minneapolis, MA, ⁵Harvard U, Boston, MA, ⁶Surgery and Microbiology and Immunology, U of Maryland, Baltimore, MD
*Purpose: Regulatory T cell (Treg) lymphatic migration is important for immune tolerance. Treg express both programmed death-1 (PD-1) and its ligand PD-L1, which are important…
2020 American Transplant Congress
CD4+ T-Cells Express High Levels of Messenger RNA Coding for Heparanase in Cultures with Matrigel
N. Chai, G. Wu, I. Kim, S. Jordan, A. Klein, T. Brennan
Cedars-Sinai Med Ctr, Los Angeles, CA
*Purpose: Heparanase (Hpse) is the sole heparan sulfate (HS) degrading enzyme regulating multiple biological activities that enhance immune cell migration, blood vessel growth and cell…

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