Articles tagged "Interferon (IFN)"

2022 American Transplant Congress
HLA-II Subclasses Behave Differently Between Themselves and Between Humans: Cues to Understand Alloreactivity
S. Beland, O. Desy, M. Marcoux, M. Thivierge, J. Desgagnes, S. A. De Serres
Transplantation Unit, Renal Division, University Health Center of Quebec, Faculty of Medicine, Universite Laval, Quebec, QC, Canada
*Purpose: De novo anti-HLA-II DSAs (dnDSA) are associated with antibody-mediated rejection. However, some patients with anti-HLA-II DSAs will not develop rejection, suggesting that the development…
2022 American Transplant Congress
Deletion of AIF-1 Promotes Kidney Reparative Macrophages and Prevents Fibrosis
I. Husain, A. Dangi, X. Luo
Duke University School of Medicine, Durham, NC
*Purpose: A major etiology contributing to poor allograft survival is the inevitable ischemic insult it incurs during transplantation. Macrophages are key players in ischemia-reperfusion injury,…
2022 American Transplant Congress
An Interventional Study Using Cell-Mediated Immunity to Guide Primary Prophylaxis for CMV Infection in Organ Transplant Recipients: A Multi-Center Study
J. T. Solera¹, C. Cervera², S. Hosseini¹, J. Gill³, S. Shalhoub⁴, J. Zaltzman⁵, N. Pinzon¹, A. Humar¹, D. Kumar¹
¹UHN, Toronto, ON, Canada, ²UAlberta, Edmonton, AB, Canada, ³UBC, Vancouver, BC, Canada, ⁴LHSC, London, ON, Canada, ⁵StMH, Toronto, ON, Canada
*Purpose: There are limited interventional studies using CMV cell-mediated immunity to guide the duration of antiviral prophylaxis. We aimed to use CMV CMI to guide…
2022 American Transplant Congress
Type 1 Innate Lymphoid Cells Alleviate Acute Liver Injury Following Transplantation via Interferon-γ Mediated Pathway
H. Kojima, K. Kadono, H. Hirao, K. J. Dery, J. Kupiec-Weglinski, Y. Zhai
Dumont-UCLA Transplant Center, Los Angeles, CA
*Purpose: Innate lymphoid cells (ILCs), a heterogeneous population of non-B non-T lymphocytes, have been found in recent years to plays key regulatory roles in tissue…
2022 American Transplant Congress
Cd80 on Effector T Cell Binds Pd-l1 on Lymphatic Endothelial Cells to Fine Tune Migration
W. Piao¹, V. Saxena¹, L. Li¹, K. Hippen², Y. Zhang², B. Blazar², I. Lape³, L. Riella³, J. Bromberg¹
¹Surgery, University of Maryland, Baltimore, MD, ²University of Minnesota, Minneapolis, MN, ³Harvard Medical School, Boston, MA
*Purpose: Antigen presenting cell (APC) CD80 trans-binds CD28 and CTLA4 on T cells, boosting or inhibiting immunity, respectively. CD80 has another ligand, Programmed Death-1 Ligand…
2022 American Transplant Congress
TCMR in Late Kidney Transplant Biopsies Shows Less Molecular TCMR Activity and More Fibrosis Despite Persistence of Tubulitis and Interstitial Infiltrate
K. S. Madill-Thomsen¹, J. Reeve¹, P. Halloran¹, .. and the INTERCOMEX Study Group²
¹Alberta Transplant Applied Genomics Centre, Edmonton AB, AB, Canada, ²., ., AB, Canada
*Purpose: We studied the relationship between time post-transplant and molecular T cell-mediated rejection (TCMR) activity in a population of indication kidney transplant biopsies.*Methods: Updated rejection-based…
2022 American Transplant Congress
A Novel Method for Ex Vivo Stimulation of Mesenchymal Stem Cells via Invariant Natural Killer T Cell Activation with ɑ-galactosylceramide
R. Ishii¹, E. Kawaguchi¹, T. Yamakawa¹, H. Ishigooka¹, T. Ikeda¹, R. Ishiyama¹, K. Saiga¹, T. Takagi¹, Y. Ishii², K. Tanabe¹
¹Tokyo Women's Medical University, Tokyo, Japan, ²Department of Immunological Diagnosis, Juntendo University Graduate School of Medicine, Tokyo, Japan
*Purpose: Mesenchymal stem cells (MSCs) typically exhibit unique regenerative and immunomodulatory properties when exposed to proinflammatory cytokines. Invariant natural killer T (iNKT) cells are known…
2021 American Transplant Congress
Resolution of Endothelial Inflammation is Delayed Following IFNγ, Which Provokes a Long-lasting Pro-adhesive Phenotype Dependent on JAK/STAT Signaling
N. M. Valenzuela
Pathology and Laboratory Medicine, UCLA, Los Angeles, CA
*Purpose: Although many cytokines are upregulated within allografts undergoing rejection, intragraft transcripts are dominated by IFN-response signatures. Resolution is a key phase of inflammation needed…
2021 American Transplant Congress
DAP12 Promotes Liver DC Tolerogenicity by Negative Regulation of the CGAS-STING-IFN I Pathway
Y. Zheng¹, J. Long², N. Ryosuke¹, L. Peng³, F. Peng³, A. Thomson¹
¹Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, ²Department of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China, ³Department of Kidney Transplantation, The Second Xiangya Hospital of Central South University, Changsha, China
*Purpose: Constitutive expression of comparatively high levels of DNAX-activating protein of 12KDa (DAP12) by liver myeloid dendritic cells (mDCs) has been implicated in their immune…
2020 American Transplant Congress
Monitoring Inflammatory Cytokines in HLA-Sensitized Kidney Transplant Patients (HS KTx Pts) Desensitized with Clazakizumab (CLZ, Humanized Anti-IL-6 Monoclonal Antibody) Followed by Transplantation (Tx)
S. Ge¹, A. Petrosyan¹, M. Chu¹, N. Ammerman², A. Vo², X. Zhang³, S. C. Jordan², M. Toyoda¹
¹Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, ²Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA, ³HLA Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: Chronic inflammation and HLA sensitization are burdens for end stage renal disease Pts awaiting for a KTx. IL-6 is a pro-inflammatory cytokine responsible for…

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