Articles tagged "Gene expression"

2021 American Transplant Congress
Sequential Analysis of Renal Allograft Rejection at Single Cell Resolution
T. Shi¹, C. Castro-Rojas¹, A. Burg¹, K. Roskin¹, J. Rush², B. Haraldsson², A. Shields³, R. Alloway³, E. Woodle³, D. Hildeman¹
¹Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ²Novartis Pharmaceuticals AG, Basel, Switzerland, ³University of Cincinnati Medical Center, Cincinnati, OH
*Purpose: Renal allograft anti-rejection therapies (corticosteroids (CCS) and anti-lymphocyte globulin) have been the primary treatment modalities for over six decades, yet little is known about…
2021 American Transplant Congress
Combined Donor Derived Cell Free DNA (AlloSure) and Peripheral Immune Cell Gene Expression (AlloMap) Testing for the Diagnosis of Rejection in Kidney Transplant Recipients with De Novo Donor Specific Antibodies
K. R. Degner, S. Parajuli, F. Aziz, N. Garg, D. Mandelbrot, M. Mohamed, K. Van Hyfte, S. R. Reese, N. A. Wilson, A. Djamali
University of Wisconsin, Madison, WI
*Purpose: Combined donor-derived cell-free DNA (dd-cfDNA, AlloSure) and peripheral immune cell gene expression (AlloMap) may increase the predictive value of de novo DSA (dnDSA) for…
2021 American Transplant Congress
VP2 MRNA Distinguishes the Direct Injury and Inflammation Effects of Polyoma Virus (BK) Infection from the Cognate TCMR Response That Follows Immunosuppressive Minimization
P. F. Halloran¹, K. Famulski¹, K. S. Madill-Thomsen¹, G. Böhmig², G. Gupta³, M. Myślak⁴, O. Viklicky⁵, &. the INTERCOMEX Study Group⁶
¹Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, ²Medical University of Vienna, Vienna, Austria, ³Virginia Commonwealth University, Richmond, VA, ⁴Pomeranian Medical University, Szczecin, Poland, ⁵Institute for Clinical and Experimental Medicine, Prague, Czech Republic, ⁶., Edmonton, AB, Canada
*Purpose: BK virus nephropathy (BKN) and T cell-mediated rejection (TCMR) are difficult to distinguish by histology but often coexist due to the necessity for immunosuppression…
2021 American Transplant Congress
RNA Sequencing (RNAseq) Tissue Analysis Can Provide Early Warning Signals for Potential Intestinal Transplant Complications
J. Kang¹, L. Belyayev¹, O. Aguirre¹, K. Khan¹, Y. Gusev², K. Bhuvaneshwar², H. Ressom³, J. Hawksworth¹, C. Matsumoto¹, T. Fishbein¹, A. Kroemer¹
¹MedStar Georgetown Transplant Institute, Washington, DC, ²Georgetown University Medical Center, Innovation Center for Biomedical Informatics, Washington, DC, ³Georgetown University Medical Center, Lombardi Comprehensive Cancer Center, Washington, DC
*Purpose: A disrupted mucosal barrier in intestinal grafts can cause alloreactive complications such as rejection, inflammation and infection following intestinal transplantation (ITx). We hypothesize that…
2021 American Transplant Congress
Transcriptomics and Proteomics Profiling of Complement Pathway (cp) Proteins in Biopsies With Polyomavirus Bk Nephropathy (bkvn)
P. Randhawa¹, F. Fei², Y. Huang¹, G. Tseng³, K. Xiao⁴
¹Departments of Pathology, Pittsburgh, PA, ²Pharmacology and Chemical Biology, Pittsburgh, PA, ³Biostatistics, Pittsburgh, PA, ⁴Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA
*Purpose: Late stage BKVN can show C4d as well as classic immune complex deposits in the tubular basement membranes (Bracamonte et al. Am J Transplant…
2021 American Transplant Congress
Dysregulation of Immune Cell Glycolysis and Oxidative Phosphorylation Correlates with Development of Pre-liver Transplant Immune Dysfunction and Post-transplant Mortality
G. Panayotova¹, L. Jin¹, A. Lemenze¹, S. Simonishvili¹, Y. Qin¹, L. Minze², G. Dikdan¹, F. Paterno¹, X. C. Li², M. Ghobrial², J. V. Guarrera¹, K. E. Lunsford¹
¹Transplant Surgery, Rutgers NJMS, Newark, NJ, ²Transplant Surgery, Houston Methodist Hospital, Houston, TX
*Purpose: Cirrhosis-related immune dysfunction contributes to early morbidity and mortality following liver transplant (LT). We have previously identified a pre-LT biomarker panel, the immune frailty…
2021 American Transplant Congress
Life-supporting Multi-gene Cardiac Xenografts From Swine Demonstrate Survival >8 Months and Preclinical Efficacy for Human Clinical Trials
C. Goerlich¹, B. Griffith¹, A. Singh¹, T. Zhang¹, I. Tatarov¹, B. Lewis¹, F. Sentz¹, A. Hershfeld¹, P. Odonkor¹, B. Williams¹, E. Strauss¹, A. Tabatabai², A. Bhutta³, D. Ayares⁴, D. Kaczorowski¹, M. Mohiuddin¹
¹Surgery, University of Maryland School of Medicine, Baltimore, MD, ²Department of Medicine, Division of Pulmonary and Critical Care Medicine, University of Maryland School of Medicine, Baltimore, MD, ³Pediatrics, Pediatric Critical Care Medicine, University of Maryland School of Medicine, Baltimore, MD, ⁴Revivicor, Inc., Blacksburg, VA
*Purpose: Cardiac xenotransplantation has been proposed to bridge the gap in organ shortage for those in end-stage heart failure without the opportunity to receive a…
2021 American Transplant Congress
Initial Experience with Trugraf^Tm Gene Expression Profile and Trac^Tm Dd-cfdna Testing in Kidney Transplant Recipients Suggests Synergy and Enhanced Management within the First Year Post-transplant and Beyond
V. Paramasivam, B. Greco, M. Germain
Nephrology, Baystate Medical Center, Springfield, MA
*Purpose: Non-invasive validated rejection biomarkers are now available to monitor kidney transplant patients (KTRs). Two such biomarkers are; TruGrafTM (TG) gene expression profile validated to…
2021 American Transplant Congress
Laminin Alpha 4 and Alpha5 Differentially Regulate Lymph Node Tolerogenic Structure
L. Li¹, M. Shirkey¹, W. Piao¹, Y. Xiong¹, V. Saxena¹, T. Zhang¹, J. Iyyathurai², R. Lakhan¹, R. Abdi³, J. Bromberg¹
¹Surgery, UMB, Baltimore, MD, ²CVID, UMB, Baltimore, MD, ³Harvard University, Boston, MD
*Purpose: Lymph node (LN) stromal laminins α4 (Lama4) and α5 (Lama5) are associated with tolerance and immunity, respectively. We hypothesized that stromal Lama4 and Lama5…
2021 American Transplant Congress
Analysis of Single Cell RNA Sequencing Data to Define Biomarkers of Human Liver Immune Tolerance
B. Rocque¹, A. Barbetta¹, P. Singh¹, C. Goldbeck¹, D. G. Helou², E. Loh³, N. Ung⁴, J. S. Lee⁴, O. Akbari², J. Emamaullee¹
¹Surgery, University of Southern California Keck School of Medicine, Los Angeles, CA, ²Molecular Microbiology and Immunology, University of Southern California, Los Angeles, CA, ³Norris Medical Library, University of Southern California Keck School of Medicine, Los Angeles, CA, ⁴Ellison Institute, University of Southern California, Los Angeles, CA
*Purpose: The liver is unique in its ability to maintain immune homeostasis and promote operational tolerance following solid organ transplantation. Single-cell RNA sequencing (scRNA seq)…

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