Articles tagged "Endothelial activation"

2020 American Transplant Congress
Activation of the ICOS/ICOS-Ligand Pathway in Antibody-Mediated Kidney Graft Rejection
V. Cantaluppi¹, G. Merlotti¹, M. Quaglia¹, G. Rosso¹, N. Clemente¹, G. Cappellano¹, A. Chiocchetti¹, G. Castellano², U. Dianzani¹, G. Camussi³
¹Nephrology and Kidney Transplantation Unit, University of Piemonte Orientale (UPO), Novara, Italy, ²Nephrology, Dialysis and Kidney Transplantation Unit, University of Foggia, Foggia, Italy, ³Department of Medical Sciences, University of Torino, Torino, Italy
*Purpose: The costimulatory pathway ICOS/ICOS-Ligand may represent a new therapeutic target in antibody-mediated rejection (ABMR), the major cause of long term kidney graft failure. The…
2020 American Transplant Congress
Mitochondrion-Endothelial Interaction Generates Danger Signal in Promoting Costimulation-Resistant T Cell-Mediated Allograft Rejection
S. Li¹, M. Song¹, Q. Li², A. Kirk¹, H. Xu¹
¹Surgery, Duke University, Durham, NC, ²Immunology, Duke University, Durham, NC
*Purpose: Endothelial cells (ECs) play a critical role in allorecognition, presentation, and costimulation for initiation of alloimmune rejection. The objective of this study was to…
2020 American Transplant Congress
PD-L1 Signals Lymphatic Endothelium for Treg Migration
W. Piao¹, L. Li¹, K. Hippen², Y. Zhang², V. Saxena³, Y. Xiong¹, C. Paluskievicz¹, M. WillsonShirkey¹, B. Blazar², L. Riella⁴, J. Bromberg⁵
¹Surgery, U of Maryland, Baltimore, MD, ²Pediatrics, U of Minnesota, Minneapolis, MN, ³U of Maryland, Baltimore, MD, ⁴Transplantation Research Center, Harvard U, Boston, MA, ⁵Surgery and Microbiology and Immunology, U of Maryland, Baltimore, MD
*Purpose: Regulatory T cell (Treg) migration is important for tolerance, although the molecules that regulate Treg entry to lymphatics are poorly understood. Lymphatic endothelial cells…
2020 American Transplant Congress
The Effect of Human Thrombomodulin on Thrombotic Complications in Life Supporting Pig-to-Baboon Cardiac Xenotransplantation
C. E. Goerlich¹, A. Singh¹, D. Kaczorowski¹, M. Abdullah¹, B. Lewis¹, I. Tatarov¹, A. Hershfeld¹, T. Zhang¹, P. Odonkor¹, E. Strauss¹, B. Williams¹, D. Ayares², M. Mohiuddin¹
¹Surgery, University of Maryland School of Medicine, Baltimore, MD, ²Revivicor, Blacksburg, VA
*Purpose: Transplantation of organs from animals to humans (xenotransplantation) has been proposed to address the critical shortage of organs for transplantation. The use of genetically…
2020 American Transplant Congress
Vesicle-Associated Tweak is Increased During Acute Cellular Rejection and Contributes to Endothelial Inflammation
O. Gidlof, J. Sadrian, M. Grossi, S. Alcevska, J. Lundgren, G. Rådegran, G. Smith
Cardiology, Lund University, Lund, Sweden
*Purpose: Extracellular vesicles (EVs) are released from immune cells upon activation and play direct roles in allograft tolerance and rejection, in part through delivery of…
2020 American Transplant Congress
Ex Vivo Isolated Human Vessel Perfusion System for the Design and Assessment of Nanomedicines Targeted to the Endothelium
L. G. Bracaglia¹, T. Lysyy², L. Qin², C. Albert¹, J. S. Pober², G. Tellides², W. M. Saltzman¹, G. T. Tietjen²
¹Yale University, New Haven, CT, ²Yale School of Medicine, New Haven, CT
*Purpose: In solid organ transplantation the host immune system acts to reject the graft. This process is facilitated at the endothelial surface, where inflamed donor…
2020 American Transplant Congress
Novel Technique to Analyze Blood-Endothelial Cell Interactions Under Flow Conditions
M. R. Connolly¹, K. Petitpas¹, L. Burdorf¹, B. Cerel¹, C. Laird², D. Harris², A. Azimzadeh¹, R. N. Pierson III¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²University of Maryland, Baltimore, Baltimore, MD
*Purpose: The Bioflux system has been used to study platelet-driven thrombosis and leukocyte adhesion. Typically, whole blood is stained with calcein (green) to evaluate platelet…
2020 American Transplant Congress
Single Cell RNA Sequencing of Normal Kidney Allograft Surveillance Biopsies Show Evidence of Dynamic Glomerular Endothelial Cell Activation
A. S. Naik, R. Menon, E. Otto, C. C. Berthier, E. Farkash, S. P. Norman, M. Kretzler
University of Michigan, Ann Arbor, MI
*Purpose: Indication and surveillance biopsy studies show a high prevalence of post kidney transplant (KT) glomerular disease (ElZoghby 2009,Stegall 2017) that cannot be explained by…
2019 American Transplant Congress
Ligation Of Hla Class Il Molecules Disrupts Endothelial Barrier Through Src-dependent Ve-cadherin Destabilization
F. Li¹, R. A. Sosa¹, N. M. Valenzuela¹, E. Rozengurt², E. F. Reed¹
¹Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA, ²Digestive Diseases Research Center, University of California, Los Angeles, Los Angeles, CA
*Purpose: Microvascular inflammation, vascular permeability, and accumulation of intravascular mononuclear cells are characteristics of acute and chronic antibody-mediated rejection. Vascular endothelial cadherin (VE-Cadherin) is a…
2019 American Transplant Congress
Single Cell RNA-seq Analysis of Antibody-Mediated Rejection Reveals Endothelial – Pericyte NOTCH Signaling
A. F. Malone, A. Chadha, H. Wu, S. Ramakrishnan, E. Donnelly, B. D. Humphreys
Washington University School of Medicine, Saint Louis, MO
*Purpose: To precisely define endothelial cell responses in AMR we performed comprehensive single cell RNA-seq on a human kidney biopsy with AMR.*Methods: Single cell libraries…