Articles tagged "Endothelial cells"

2021 American Transplant Congress
Endothelial Glycocalyx Shedding is Associated with Graft Quality During Ex Vivo Lung Perfusion
K. Noda, B. J. Philips, T. Harano, J. D. Luketich, P. G. Sanchez
Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA
*Purpose: Endothelial glycocalyx is the surface protective layer of the endothelial cells and its damage is known to be strongly associated with organ dysfunction. However,…
2021 American Transplant Congress
PD-1/PD-L1 Selectively Regulates Treg Lymphatic Migration
W. Piao¹, L. Li¹, C. Paluskievicz¹, Y. Zhang², V. Saxena³, K. Hippen², B. Blazar², L. Riella⁴, J. Bromberg¹
¹Surgery, U Maryland, Baltimore, MD, ²U Minnesota, Minneapolis, MN, ³U Maryland, Baltimore, MD, ⁴Harvard U, Boston, MA
*Purpose: The molecules that regulate Treg migration are incompletely identified. Programmed death-1 (PD-1) and its ligand PD-L1 are immune checkpoint proteins which regulate immune cell…
2021 American Transplant Congress
LTβR Engagement Regulates Treg Migration, Stability and Suppressor Function
V. Saxena¹, W. Piao¹, L. Li¹, Y. Xiong¹, M. W. Shirkey¹, J. Iyyathurai¹, R. Lakhan¹, R. Abdi², J. Bromberg¹
¹U Maryland, Baltimore, MD, ²Harvard U, Boston, MA
*Purpose: Regulatory T cell (Treg) lymphatic migration and maintenance of transcription factor Foxp3 expression are required for suppressor function and allograft protection. Treg stimulate lymphotoxin…
2021 American Transplant Congress
Atg16l-Dependent Autophagy Attenuates Procession of Renal Interstitial Fibrosis in Chronic Renal Graft Dysfunction via Regulating Tumor Necrosis Factor Alpha (tnf-α) Induced Endmt
Z. Gui, Z. Wang, Z. Han, J. Tao, X. Ju, R. Tan, M. Gu
The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
*Purpose: Chronic renal graft dysfunction is characterized by inflammation, tubular injury, and interstitial fibrosis. We have confirmed that endothelial-mesenchymal transition (EndMT) was one of important…
2021 American Transplant Congress
Single-Cell RNA-seq Identifies Intra-Graft Population Heterogeneity in Acute Heart Allograft Rejection in the Mouse
C. Wu¹, Y. Tang¹, X. Shi¹, X. He¹, X. Li²
¹The First Affiliated Hospital,Sun Yat-sen University, Guangzhou, China, ²Immunobiology & Transplant Sciences Houston Methodist Hospital, Houston, TX
*Purpose: Transplant rejection remains a major barrier to graft survival and involves a diversity of cell types. But the heterogeneity in a given cell type…
2021 American Transplant Congress
Extracellular Matrix Injury of Kidney Allografts in Antibody-mediated Rejection
S. Clotet Freixas¹, C. McEvoy¹, I. Batruch², C. Pastrello³, M. Kotlyar³, J. Van¹, M. Arambewela¹, A. Boshart¹, S. Farkona¹, Y. Niu³, Y. Li¹, O. Famure¹, A. Bozovic⁴, V. Kulasingam⁴, P. Chen¹, J. S. Kim¹, E. Chan⁵, S. Moshkelgosha¹, S. A. Rahman⁶, J. Das⁶, T. Martinu¹, S. Juvet¹, I. Jurisica³, A. Chruscinski¹, R. John¹, A. Konvalinka¹
¹Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada, ²Department of Laboratory Medicine and Pathobiology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada, ³Krembil Research Institute, University Health Network, Toronto, ON, Canada, ⁴Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada, ⁵Department of Medicine, Division of Nephrology, University Health Network, Toronto, ON, Canada, ⁶Center for Systems Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
*Purpose: Antibody-mediated rejection (AMR) accounts for >50% of kidney graft losses. AMR is caused by donor-specific antibodies (DSA) against HLA and non-HLA antigens in glomeruli…
2021 American Transplant Congress
Digital Spatial Mrna Profiling Reveals Distinct Endothelial Transcripts in Dsa+ and Dsa- Endarteritis in Kidney Allografts
K. Tomaszewski¹, M. Araujo Medina¹, A. Bruce¹, P. Divakar², R. Smith¹, T. Kawai³, R. Colvin¹, I. Rosales¹
¹Department of Pathology, Massachusetts General Hospital, Boston, MA, ²NanoString Technologies, Inc., Seattle, WA, ³Department of Surgery, Massachusetts General Hospital, Boston, MA
*Purpose: Renal allograft biopsy transcript analysis is typically performed by microarray, which lacks spatial resolution. We initiated a systematic program using the NanoString GeoMx® Digital…
2021 American Transplant Congress
Lymphotoxin Beta Receptor Regulates Treg Migration and Suppression by Modulating Draining Lymphatic Structure
V. Saxena¹, W. Piao¹, L. Li¹, M. W. Shirkey¹, J. Iyyathurai¹, R. Lakhan¹, R. Abdi², J. Bromberg¹
¹U Maryland, Baltimore, MD, ²Harvard U, Boston, MA
*Purpose: Regulatory T cells (Treg) must migrate from tissues via lymphatic vessels (LV) to the draining lymph node (dLN) to induce tolerance. During migration, Treg…
2020 American Transplant Congress
Carfilzomib-Based Desensitization: Effects on HLA, Non-HLA, Auto, and Antiviral Antibodies
S. Tremblay¹, E. Portwood¹, A. R. Shields², R. R. Alloway¹, P. A. Brailey¹, E. Woodle¹
¹U Cincinnati, Cincinnati, OH, ²U Cincinnati, Christ Hospital, Cincinnati, OH
*Purpose: An important question in plasma cell (PC) therapies is the specificity of therapy for PC populations. It is known that plasmablast populations are exquisitely…
2020 American Transplant Congress
PD-1 Signals Murine and Human Treg for Enhanced Migration
W. Piao¹, Y. Xiong¹, L. Li¹, K. Hippen², Y. Zhang², V. Saxena¹, C. Paluskievicz¹, M. WillsonShirkey¹, B. Blazar³, L. Riella⁴, J. Bromberg⁵
¹Surgery, U of Maryland, Baltimore, MD, ²U of Minnesota, Minneapolis, MN, ³Surgery, U of Minnesota, Minneapolis, MN, ⁴Harvard U, Boston, MA, ⁵Surgery and Microbiology and Immunology, U of Maryland, Baltimore, MD
*Purpose: Programmed death-1 (PD-1) attenuates immune responses. Engagement of PD-1 by its ligands PD-L1 or PD-L2 regulates T cell development, proliferation, cytokine production, and apoptosis.…

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