Articles tagged "Natural killer cells"

2020 American Transplant Congress
Analysis of the Mechanism of Liver-Resident NK Cells Activity via the Aryl Hydrocarbon Receptor
K. Sato, M. Ohira, Y. Imaoka, H. Ohdan
Department of Gastroenterological and Transplant Surgery, Hiroshima University, Hiroshima, Japan
*Purpose: Tumor recurrence is the main limitation of liver transplantation (LT) in patients with hepatocellular carcinoma (HCC). We previously reported an adoptive immunotherapy approach that…
2020 American Transplant Congress
Examination of the TIGIT/CD226 Axis in Kidney Transplant Recipients
G. J. Kavalam, A. D. Desai, A. Chandraker, S. Tripathi
Renal, Brigham and Women's Hospital, Boston, MA
*Purpose: The T-cell immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domain (TIGIT) and CD226, two poliovirus receptor-like proteins, are an emerging group of immune checkpoints with…
2020 American Transplant Congress
Decreased Anti-Tumor Activity of Liver-Resident NK Cells via IL-33 Associated with Portal Hypertension after Living Donor Liver Transplantation
Y. Imaoka, M. Ohira, K. Sato, H. Ohdan
Hiroshima Uni., Hiroshima, Japan
*Purpose: It has been reported that increasing portal vein pressure after living donor liver transplantation (LDLT) was associated with a poor prognosis, risk factors for…
2020 American Transplant Congress
Missing Self Increases the Incidence of Microvascular Inflammation after Kidney Transplantation
J. Callemeyn¹, A. Senev², M. Coemans¹, E. Lerut³, B. Sprangers¹, D. Kuypers¹, A. Koenig⁴, O. Thaunat⁴, M. Emonds², M. Naesens¹
¹Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium, ²Histocompatibility and Immunogenetics Laboratory, Red Cross-Flanders, Mechelen, Belgium, ³Imaging and Pathology, KU Leuven, Leuven, Belgium, ⁴INSERM U1111, Université Claude Bernard Lyon I, Lyon, France
*Purpose: Anti-HLA donor-specific antibodies (HLA-DSA) are often absent in serum of kidney allograft recipients with biopsies demonstrating microvascular inflammation (MVI), the histological hallmark of antibody-mediated…
2019 American Transplant Congress
Immune Cell Types and Host Gene Signatures Associated with Epstein-Barr Virus (EBV) Post-Transplant Lymphoproliferative Disorder (PTLD)
J. Toh¹, F. Vallania¹, W. A. Haynes¹, G. Bhagat², F. E. Craig³, S. H. Swerdlow⁴, T. Tousseyn⁵, S. M. Krams¹, P. Khatri¹, O. M. Martinez¹
¹Stanford University School of Medicine, Stanford, CA, ²Columbia University Medical Center, New York, NY, ³Mayo Clinic College of Medicine, Phoenix, AZ, ⁴University of Pittsburgh School of Medicine, Pittsburg, PA, ⁵Katholieke Universiteit Leuven, Leuven, Belgium
*Purpose: PTLD is a serious post-transplant complication that encompasses a range of abnormal lymphoproliferations, including EBV+ B cell lymphomas. Although many are EBV-driven, a significant…
2019 American Transplant Congress
Adjuvant Immunotherapeutic Approach For Liver Transplant Recipients With Hepatocellular Carcinoma Using Donor Liver Derived Natural Killer Cells
M. Ohira¹, R. Hotta¹, Y. Imaoka¹, K. Sato¹, Y. Tanaka¹, A. G. Tzakis², S. Nishida³, H. Ohdan¹
¹Hiroshima University, Hiroshima, Japan, ²Cleveland Clinic Florida, Weston, FL, ³New York Medical College, Valhalla, NY
*Purpose: Although liver transplantation (LT) is a preferred treatment for selected patients with Hepatocellular carcinoma (HCC), HCC-recurrence would be a still important medical problem. Most…
2019 American Transplant Congress
Circulating Donor T and NK Cells in Lung Transplantation Recipients Are Derived from the Donor Lung Parenchyma and Represent Tissue-Resident Memory Cells
J. F. Kuehne¹, R. Ballmàs Sanz¹, A. Hitz¹, B. Wiegmann², K. A. Bläsing¹, F. Ius², A. Knoefel², I. Tudorache², M. Avsar², D. Jonigk³, A. Haverich², G. Warnecke², C. Falk¹
¹Institute of Transplant Immunology, Hannover Medical School (MHH), Hannover, Germany, ²Department for Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School (MHH), Hannover, Germany, ³Institute of Pathology, Hannover Medical School (MHH), Hannover, Germany
*Purpose: We previously identified donor lymphocytes in peripheral blood of recipients directly after transplantation and persisting at least three weeks that were characterized by the…
2019 American Transplant Congress
Soluble C Type Lectin Receptor Protein Inhibition of Natural Killer Cell Mediated Tubular Epithelial Cell Death
S. Balaji¹, B. Fuhrmann², D. Lian³, H. Diao³, S. Ma³, Z. Zhang³, A. M. Jevnikar³
¹Physiology, Western University, London, ON, Canada, ²Microbiology and Immunology, Western University, London, ON, Canada, ³London Health Sciences Centre, London, ON, Canada
*Purpose: We have previously shown that Natural Killer (NK) cells can mediate kidney tubular epithelial cell (TEC) death and kidney ischemia-reperfusion injury (IRI) as well…
2019 American Transplant Congress
NK Cell Quantification by Paraffin Immunohistochemistry is Not Predictive of Graft Outcome in 1-Year Surveillance Biopsies
J. Barnes¹, F. Suliman², A. Shammout¹, E. A. Farkash¹
¹Pathology, Michigan Medicine, Ann Arbor, MI, ²Nephrology, Michigan Medicine, Ann Arbor, MI
*Purpose: Molecular and animal studies have identified NK cells as important mediators and markers of antibody mediated rejection. Using three color immunohistochemistry for CD16, T-bet,…
2019 American Transplant Congress
CD56+CD57+ Infiltrate is a Predominant Subset of Infiltrating Natural Killer Cell in Renal Transplant Biopsies with Antibody-Mediated Rejection
H. Jung¹, Y. Wee², J. Kim², M. Choi², J. Choi², H. Kwon², J. Jung², S. Kim³, Y. Cho⁴, Y. Park⁴, H. Go⁴, M. Han⁵, Y. Kim², D. Han², S. Shin²
¹Department of Biomedical Science, Asan Medical Institute of Convergence Science and Technology (AMIST), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of, ²Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of, ³Department of Convergence Medicine, Asan Institute for life sciences, Asan Medical Center, Seoul, Korea, Republic of, ⁴Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of, ⁵Department of Clinical Epidemiology, Asan Medical Center, Seoul, Korea, Republic of
*Purpose: To verify a subset of intragraft and circulating natural killer cells associated with kidney allograft rejection and fibrosis.*Methods: Thirty-nine clinically indicated transplant biopsies performed…