Articles tagged "Immunogenicity"

2022 American Transplant Congress
QSant, a Novel Urine Test Monitors Recovery of Allograft Injury After DGF
S. Ghosh¹, H. Tedesco², R. Sarwal¹, N. Titzler¹, W. Yazar¹, M. Nakamura², J. Pestana², M. Sarwal¹
¹Nephrosant, Brisbane, CA, ²Hospital do Rim, Sao Paolo, Brazil
*Purpose: We evaluate urine QSant assay to non-invasively monitor recovery of allograft injury, post delayed graft function(DGF).*Methods: 65 HLA-DR matched, renal allograft recipients, on TAC/MMF/prednisone…
2022 American Transplant Congress
Defining the Longitudinal Dynamics of Immune Cells in Blood in the First Year After Pediatric Liver Transplantation (pLTx)
E. Chichelnitskiy¹, L. Ruhl², I. Goldschmidt³, A. Karch⁴, L. Antiga⁵, D. Debray⁶, L. Hierro⁷, D. Kelly⁸, V. McLin⁹, E. Nicastro¹⁰, J. Pawlowska¹¹, P. Czubkowski¹¹, R. Mikolajczyk¹², U. Baumann¹³, C. Falk¹⁴
¹Institute of Transplant Immunology, Hannover Medical School (MHH), Hannover, Germany, ²Institute of Transplant Immunology, MHH, Hannover, Germany, ³Division of Pediatric Gastroenterology and Hepatology, MHH; European Paediatric Liver Transplantation Network, Hannover, Germany, ⁴Research Group Epidemiological and Statistical Methods, Helmholtz Centre for Infection Research; German Center for Infection Research, TTU-IICH Hannover; Institute for Epidemiology and Social Medicine, University of Münster, Münster, Germany, ⁵Hannover; Ospedali Riuniti di Bergamo, Bergamo, Italy, ⁶Hannover; Hôpital Necker-Enfants Malades, Paris, France, ⁷Hannover; Hospital Infantil Universitario La Paz, Madrid, Spain, ⁸Birmingham Children's Hospital, Birmingham, United Kingdom, ⁹Service Spécialités Pédiatriques, Genève, Switzerland, ¹⁰Ospedali Riuniti di Bergamo, Bergamo, Italy, ¹¹Gastroenterology, Hepatology, Nutritional Disorders and Pediatrics, The Children’s Memorial Health Institute, Warsaw, Poland, ¹²German Center for Infection Research, TTU-IICH Hannover; MHH; Institute of Medical Epidemiology, Biostatistics and Medical Informatics, University of Halle, Halle, Germany, ¹³Birmingham Children’s Hospital, UK; Division of Pediatric Gastroenterology and Hepatology, MHH, Hannover, Germany, ¹⁴Institute of Transplant Immunology, MHH; German Center for Infection Research, TTU-IICH, Hannover, Germany
*Purpose: In the European multicentre “ChilSFree” study we aimed for a deep characterisation of the longitudinal immune dynamics during the first year after pLTx.*Methods: Absolute…
2022 American Transplant Congress
Sars-cov-2 Antibody and T Cell Response After Vaccination with or without Intensified Immunosuppression Among Pediatric Renal Transplant Recipients
H. Pizzo¹, B. Shin², P. R. Soni³, S. Nadipuram³, J. Garrison², R. Zhang², S. C. Jordan², D. Puliyanda¹
¹Pediatric Nephrology, Cedars-Sinai Medical Center, Los Angeles, CA, ²Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA, ³Pediatric Infectious Disease, Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: Recent data has shown poor antibody response to SARS-CoV-2 vaccination among adult kidney transplant (tx) recipients, with seroconversion ranging between 22%-58% after two mRNA…
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
Do Clinical & Pathologic Signs of Rejection Develop Following Transplantation of Tissue Containing Non-Autologous Mitochondria in an Autologous Nuclear Cloned Host?
S. Jacob¹, M. L. Baack², A. Savinov³, P. J. Wettstein⁴
¹Cardiothoracic Surgery and transplantation, Mayo Clinic, Jacksonville, FL, ²Division of Neonatology, University of South Dakota – Sanford School of Medicine, Sioux Falls, SD, ³Sanford Research, University of South Dakota School of Medicine, Sioux Falls, SD, ⁴Departments of Surgery and Immunology, Mayo Clinic, Rochester, MN
*Purpose: Recent studies have yielded conflicting results on the capacity of oocyte-encoded mtDNA polymorphisms to stimulate rejection . Therefore, there are still questions as to…
2022 American Transplant Congress
First-in-human Study Of Lis1, A Novel Glyco-humanized Anti-lymphocyte Swine Polyclonal Antibody, In Kidney Transplantation: Safety And Efficacy
J. Slatinska¹, B. Vanhove², M. Kolarova¹, F. Shneiker², J. Rousse², C. Galli³, J. Bach⁴, E. Cozzi⁵, J. Soulillou⁶, O. Duvaux², O. Viklicky¹
¹Institute for Clinical and Experimental Medicine, Prague, Czech Republic, ²Xenothera, Nantes, France, ³Laboratorio di Tecnologie della Riproduzione, Cremone, Italy, ⁴IECM, Immunoendocrinology, USC1383, Oniris, INRAE, Nantes, France, ⁵Transplantation Immunology Unit, Padua University Hospital, Padova, Italy, ⁶Nantes Universités, Nantes, France
*Purpose: to assess safety, T cell depletion, PK/PD and determine the therapeutic dose of LIS1, a purified anti-lymphocyte glyco-humanized polyclonal swine IgG, derived by immunizing…
2022 American Transplant Congress
MTOR Inhibition Acts Directly on Endothelial Cells to Induce Contact-Independent Immune-Modulation of Allo-Specific T Cell Activation
H. Xu, L. Wang, V. A. Bendersky, Q. Gao, Q. Li, A. D. Kirk, H. Xu
Duke University School of Medicine, Durham, NC
*Purpose: Endothelial cells (ECs) form a barrier between vascularized organ allografts and host immunity and are known to provoke alloimmune responses. The mTOR inhibitor rapamycin…
2022 American Transplant Congress
Analysis of Sars-Cov-2-Specific T-Cell Responses Using Novel Single-Cell Multiplexed Isolight in Covid-19 Convalescents
Y. Sambandam¹, J. He¹, N. Vanderhyde², L. Gallon¹, J. Leventhal¹, J. Mathew¹
¹Northwestern University, Chicago, IL, ²IsoPlexis, Branford, CT
*Purpose: COVID-19 has poor outcomes in transplant recipients with reduced antibody responses. However, the exact cellular immune response against SARS-CoV-2 remains largely unclear. We developed…
2022 American Transplant Congress
Human PBMC-Transferred Murine MHC Class I/II-Deficient NOG Mice Enable Long-Term Evaluation of Human Immune Responses to Human Induced Pluripotent Stem Cell-Derived Cardiomyocyte Sheets
R. Matsumoto
Center for Immune Therapeutics and Diagnosis, Juntendo University, Tokyo, Japan
*Purpose: Transplantation of cardiomyocytes sheets derived from allogenic human induced pluripotent stem cells (hiPS-CMs) hold great promise in generating new functional myocardium in situ. However,…
2022 American Transplant Congress
3D Co-Culture System with Porcine Aortic Endothelial Cell Line and Human or Non-Human Primate Cells for Application in the Study of Xeno-Immune Reaction
S. K. Yadav¹, Y. Lee², S. Hurh³, S. Kim², J. Yang⁴, J. C. Jeong²
¹Medicine, Seoul National University, Seoul, Korea, Republic of, ²Internal Medicine (Nephrology), Seoul National University Bundang Hospital, Seongnam, Korea, Republic of, ³Medicine, Korea University, Seoul, Korea, Republic of, ⁴Internal Medicine (Nephrology), Yonsei University, Seoul, Korea, Republic of
*Purpose: Neutrophil Extracellular Trap (NET) is a vigorous immune reaction of neutrophil. It plays role in xenotransplantation rejection. Functional assay of NET is important; however,…