Am J Transplant, Volume 21, Suppl 3 Archives - Page 74 of 139 - ATC Abstracts

2021 American Transplant Congress
Enhancement of Regulatory T Cell Therapies by Biomimetic Nanofiber Matrices on Single Cells
L. A. Fraser¹, S. Lee¹, Y. Sambandam², J. He², X. Huang², D. Z. Ivancic², J. Mathew², Z. J. Zhang², J. R. Leventhal², L. Gallon², S. I. Stupp¹
¹Simpson Querrey Institute, Northwestern, Chicago, IL, ²Surgery – Comprehensive Transplant Center, Northwestern, Chicago, IL
*Purpose: Here we report a new method to create an artificial and biodegradable matrix of biomimetic nanofibers on single cells with the goal of enhancing…
2021 American Transplant Congress
Treg Lymphotoxin Engages Lymphotoxin Receptor on Cancer and Endothelial Cells to Promote Cancer Metastatic Migration: Mechanisms for Treg-Cancer Interactions
W. Piao, R. Oakes, C. Paluskievicz, J. Christopher, J. Bromberg
U Maryland, Baltimore, MD
*Purpose: Treg immune suppression which is critical for transplant graft survival may also enhance tumor growth and metastases. Treg lymphotoxin (LTα1β2) may directly engage the…
2021 American Transplant Congress
IL-10 Signaling in T Cells Modulates Costimulation-independent Activation and is Essential for Transplant Tolerance Induction
M. Iglesias Lozano¹, D. Bibicheff¹, M. Chicco², A. Komin¹, G. Brandacher¹, G. Raimondi¹
¹Plastic Surgery, Johns Hopkins University, Baltimore, MD, ²Frimley Health NHS Foundation Trust, London, United Kingdom
*Purpose: Costimulation blockade (CoB)-based immunotherapy remains a very promising approach for better management of transplant recipients. Understanding the mechanisms that impact the efficacy of CoB…
2021 American Transplant Congress
Selective Bcl-2 Inhibition to Deplete Hematopoietic Stem Cells in Bone Marrow Niche: A Novel Approach to Promote Mixed Chimerism
T. Hirose¹, H. Sasaki¹, G. Lassiter¹, D. Ma¹, T. Oura¹, A. Dehnadi¹, A. Cosimi¹, P. Cippa², T. Fehr², T. Kawai¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²Institute of Physiology, University of Zurich, Zurich, Switzerland
*Purpose: A recent murine study has shown that successful mixed chimerism is achievable without myelosuppressive treatments by Bcl-2 inhibition. However, the mechanism by which selective…
2021 American Transplant Congress
Imaging Flow Cytometry Reveals That Platelet-Sized Erythrocyte Fragments are Formed During Pig Organ Perfusion with Human Blood
Z. A. Habibabady¹, F. Ellett², L. Burdorf¹, M. Connolly¹, F. Pollok¹, D. Irimia², R. N. Pierson III¹, A. M. Azimzadeh¹
¹Center for Transplantation Sciences, Massachusetts General Hospital and Harvard School of Medicine, Boston, MA, ²Center for Engineering in Medicine and Surgery, Massachusetts General Hospital and Harvard School of Medicine, Boston, MA
*Purpose: Severe thrombocytopenia frequently occurs after xenotransplantation of porcine cells or organs, and when pig organs are perfused with human blood. We developed a flow…
2021 American Transplant Congress
Augmented Responses of Donor Kidney Tubular Cells to TLR Signaling Correlate with Ameliorated Ischemia/reperfusion Injury and Long-term Allograft Protection
X. Lai¹, J. Wang¹, L. Qiu², S. Han¹, K. Shen¹, Z. Zhang¹
¹Comprehensive Transplant Center, Microsurgery core, Northwestern University, Chicago, IL, ²University of California, San Francisco, San Francisco, CA
*Purpose: We have previously demonstrated that donor genetic background and kidney-intrinsic innate immunity were key determinants of delayed graft function in kidney transplantation. However, the…
2021 American Transplant Congress
Normothermic-Hyperthermic Machine Perfusion Could Increase Response to Pharmacological Intervention in Mitigation of Liver Steatosis
F. Zhou, M. Xu, G. A. Upadhya, Y. Lin, W. C. Chapman
Surgery, Washington University in St. Louis, St. Louis, MO
*Purpose: To study the feasibility of mitigating rat liver steatosis with ex-situ normothermic-hyperthermic machine perfusion using a multi-drug ‘defatting’ combination.*Methods: 16 male Zucker obese rats…
2021 American Transplant Congress
Association of Immune Cell Markers with Adverse Outcomes in the First 6 Months Post-pediatric Heart Transplantation
J. Chen¹, D. Salerno², H. Corbo¹, S. Shah³, A. Rothkopf⁴, I. D. Lytrivi⁴
¹Department of Pharmacy, Columbia University Irving Medical Center, New York, NY, ²Department of Pharmacy, Weill Cornell Medical Center, New York, NY, ³College of Pharmacy and Health Sciences, St. John's University, Queens, NY, ⁴Pediatric Cardiology, Columbia University Irving Medical Center, New York, NY
*Purpose: Immunosuppression titration post-orthotopic heart transplant (OHT) is limited to trough level monitoring and does not provide data pertaining to overall state of immunosuppression. Additional…
2021 American Transplant Congress
De Novo Donor Specific Antibodies After Heart Transplantation in Fontan Patients with Protein Losing Enteropathy
D. A. Magnetta¹, V. Hoch², D. Pinelli³, M. Monge⁴, E. Pahl¹, P. T. Thrush¹
¹Pediatric Cardiology, Lurie Children's Hospital, Chicago, IL, ²Northwestern School of Medicine, Chicago, IL, ³Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, ⁴Pediatric Cardiothoracic Surgery, Lurie Children's Hospital, Chicago, IL
*Purpose: Protein Losing Enteropathy (PLE) complicates Fontan physiology and can be an indication for heart transplantation (HT). PLE is accompanied by immune dysregulation, potentially impacting…
2021 American Transplant Congress
Does the Timing of Subclinical Acute Rejection After Kidney Transplant Matter?
P. Portocarrero¹, S. Park², K. Guo³, L. Zhao³, J. Friedewald²
¹Nephrology, Northwestern University, Chicago, IL, ²Transplant Nephrology, Northwestern University, Chicago, IL, ³Feinberg School of Medicine, Northwestern University, Chicago, IL
*Purpose: We hypothesized that the timing of subclinical acute rejection (subAR) diagnosed with biopsy, gene expression profile or donor-derived cell-free DNA is associated with poor…