Articles tagged "Genomics"

2022 American Transplant Congress
Defects in Kim-1 Do Not Result In Delayed Graft Function After Kidney Transplantation
R. S. Suri¹, J. Lee², M. Ban³, B. Shrum², O. Z. Ismail⁴, S. Leckie⁵, A. McIntyre³, Q. Xu⁶, S. H. Lee², S. de Chickera², R. A. Hegele², L. Gunaratnam²
¹Research Institute of the McGill University Health Center, Montreal, QC, Canada, ²Schulich School of Medicine and Dentistry, Western University, Lodnon, ON, Canada, ³Robarts Research Institute, Lodnon, ON, Canada, ⁴University of Alberta, Edmonton, AB, Canada, ⁵London Health Sciences Centre, Lodnon, ON, Canada, ⁶University of Pittsburg Medical Center, Pittsburg, PA
*Purpose: Tissue repair is critical to restore organ function after ischemia-reperfusion injury (IRI) during transplantation. During renal injury, upregulation of kidney injury molecule-1 (KIM-1) transforms…
2022 American Transplant Congress
Identification of Akkermansia Muciniphila and Bacteroides Thetaiotaomicron Associated with the Alleviation of Peritransplant Liver Damage in Mouse Recipients
K. Dery¹, H. Kojima², H. Hirao², K. Kadono³, T. Dong², J. Kupiec-Weglinski⁴
¹Surgery, UCLA, Los Angeles, CA, ²UCLA, Los Angeles, CA, ³Liver Transplant Surgery, UCLA, Los Angeles, CA, ⁴UCLA Medical Center, Los Angeles, CA
*Purpose: Although recent evidence shows that modifications of gut microbiota by antibiotics (Abx) influences liver allograft function, its compositional role in orthotopic liver transplantation (OLT)…
2022 American Transplant Congress
Autencoder, a Novel Computational Tool to Score T Cell Clones Demonstrates Biopsy T Cell Clones Are Not Represented in the Peripheral Blood
N. Borcherding, A. Leckie-Harre, H. Wu, B. D. Humphreys, A. F. Malone
Washington University, St Louis, MO
*Purpose: Antibody-mediated rejection (AMR) remains one of the major causes of allograft failure and our understanding of this disease process is poor. The generation and…
2022 American Transplant Congress
Single Cell RNAseq Analysis of Human Renal Allograft Rejection Demonstrates Distinct Transcriptomic Profiles That Vary Based on the Type of Maintenance Immunosuppression
T. Shi¹, A. Burg¹, K. Roskin², J. Rush³, B. Haraldsson³, A. Shields⁴, R. Alloway⁴, E. Woodle⁵, D. Hildeman¹
¹Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ²Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ³Novartis Pharmaceuticals AG, Basel, Switzerland, ⁴Internal Medicine, University of Cincinnati, Cincinnati, OH, ⁵Surgery, University of Cincinnati, Cincinnati, OH
*Purpose: Rejection therapy has remained unchanged for 60 years and is associated with significant failure and infection rates. Development of new anti-rejection therapies requires mechanistic…
2022 American Transplant Congress
Fibroblastic Reticular Cell Subset Transcriptional Reprogramming Differs in Response to Immunity versus Tolerance
L. Li¹, Y. Song¹, M. Shirkey¹, A. Kensiski¹, W. Piao¹, V. Saxena¹, S. Gavzy¹, B. Ma¹, R. Abdi², J. Bromberg¹
¹UMB, Baltimore, MD, ²Harvard University, Boston, MD
*Purpose: Lymph node (LN) fibroblastic reticular cells (FRCs) are central contributors to the LN niche. We hypothesized that FRC subsets reactive to immunity versus tolerance…
2022 American Transplant Congress
Biopsy and Blood Gene Expression Profiles Distinguish Injury, Subclinical and Clinical Rejection in Kidney Transplant Recipients
S. Kurian¹, M. Kandpal², C. Rebello², C. Marsh¹, J. Friedewald²
¹Scripps Health, La Jolla, CA, ²Northwestern University, Chicago, IL
*Purpose: We analyzed serial gene expression profiles in paired blood and biopsies from kidney transplant recipients phenotyped with a comprehensive clinical algorithm. We compared disease…
2022 American Transplant Congress
Genotype-Guided Voriconazole Prescribing in Lung Transplant Recipients
C. Luo, R. G. Nador, R. D. Levy, J. Swiston, C. Bergeron, N. Partovi
Vancouver General Hospital, Vancouver, BC, Canada
*Purpose: Voriconazole (VRC) is the treatment of choice for Aspergillus in lung transplant recipients. VRC undergoes metabolism via CYP2C19, a polymorphic enzyme that has varying…
2022 American Transplant Congress
Evaluation of Genotype Based Clustering Method of Single-Cell RNA-Sequencing Data from Human Kidney Allograft Biopsies
G. Thareja¹, A. Belkadi¹, S. Rahim², H. Yang², F. B. Mueller², K. Suhre¹, M. Suthanthiran², T. Muthukumar²
¹Weill Cornell Medicine, Doha, Qatar, ²Weill Cornell Medicine, New York, NY
*Purpose: Single-cell RNA sequencing (scRNA-seq) characterizes expression profiles of individual cells, providing novel insights into new cell types or new cell states that were not…
2021 American Transplant Congress
Donor-derived Cell-free DNA Distinguishes Acute Rejection from Other Causes of Graft Injury in Liver Transplant Recipients
J. Levitsky¹, M. Miller², R. Sinha², E. Bixler², A. Al-Turck², J. Weems², M. Altrich², S. Kleiboeker², M. Abecassis³
¹Gastroenterology & Hepatology; Comprehensive Transplant Center, Northwestern University, Chicago, IL, ²Viracor Eurofins, Lees Summit, MO, ³University of Arizona College of Medicine Tucson, Tucson, AZ
*Purpose: The donor derived cell-free DNA (ddcfDNA) has emerged as strong biomarker for allograft injury, where the fraction of ddcfDNA is reported to increase in…
2021 American Transplant Congress
Extreme Phenotype Sampling and Next Generation Sequencing to Identify Genetic Variants Associated with Tacrolimus Metabolism in African American Kidney Transplant Recipients
C. R. Dorr¹, B. Guo², B. Wu², J. Abrahante², D. Schladt³, R. Remmel², W. Guan², A. Muthusamy³, G. Onyeaghala³, N. Pankratz², A. Matas², R. Mannon⁴, W. Oetting², P. Jacobson², A. K. Israni³
¹Hennepin Healthcare Research Institute, Minneapolis, MN, ²University of Minnesota, Minneapolis, MN, ³Nephrology, Hennepin Healthcare Research Institute, Minneapolis, MN, ⁴University of Nebraska Medical Center, Omaha, NE
*Purpose: Tacrolimus (TAC) pharmacogenomics studies identified common genetic variants that alter TAC troughs suggesting strategic dosing for specific populations. Common variants and clinical factors explain…