Articles tagged "Nuclear factor-kappa B (NF-kB)"

2022 American Transplant Congress
Sting but Not Mtor Signaling Regulates Exogenous Mitochondrion-Induced Endothelial Cell Mitophagy
H. Xu, L. Wang, A. D. Kirk, H. Xu
Duke University School of Medicine, Durham, NC
*Purpose: We have previously demonstrated activation and increasing mitophagy of human endothelial cells (ECs) following exogenous mitochondrion-stimulation. The objectives of this study were to evaluate…
2022 American Transplant Congress
Treg Crosstalk with Both Tumor and Lymphatic Cells Promotes Metastasis Through Lta1b2-ltbr Signaling
W. Piao¹, R. S. Oakes², C. M. Jewell², J. Bromberg¹
¹Surgery, University of Maryland, Baltimore, MD, ²University of Maryland, College Park, MD
*Purpose: Lymphotoxin (LT) α1β2 high expressing Tregs are essential for immune tolerance although inhibiting antitumor immunity. Lymphatic endothelial cells (LEC) express the LT beta-receptor (LTβR),…
2021 American Transplant Congress
Dna-pkcs Regulation of the Allogeneic Immune Response
L. Burdine, M. Burdine, Z. Waldrip, D. Harrison
University of Arkansas, Little Rock, AR
*Purpose: Organ transplantation is life-saving and continued investigations into immunological mechanisms that drive organ rejection are needed to improve immunosuppression therapies and prevent graft failure.…
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…
2020 American Transplant Congress
XIAP Enhances Xenoislet Survival: Novel Models to Evaluate Pretransplantation Gene Modifications
G. R. Devi¹, Z. Fitch¹, M. Song¹, M. Ribeiro¹, A. McGowan¹, X. Luo², B. H. Collins¹, A. D. Kirk¹
¹Department of Surgery, Duke Univesity School of Medicine, Durham, NC, ²Division of Nephrology, Duke Univesity School of Medicine, Durham, NC
*Purpose: Porcine islet xenotransplantation offers a reliable and near limitless supply of islets for the treatment of type 1 diabetes. Intraportal infusion of cells exposes…
2020 American Transplant Congress
Hypothermia Attenuates Renal Fibrosis after Renal Ischemia Reperfusion in Mice
D. Choi¹, D. Kim², E. Kim², J. Jeong², J. Kim¹, Y. Ham¹, Y. Chang³, K. Na¹, K. Lee¹
¹Nephrology, Chungnam National University, Daejeon, Korea, Republic of, ²Department of Medical Science, Chungnam National University, Daejeon, Korea, Republic of, ³Nephrology, Catholic University of Korea, Daejeon, Korea, Republic of
*Purpose: Recently, acute kidney injury is a important cause of chronic kidney injury, characterized by glomerular sclerosis and tubular fibrosis. Hypothermia attenuates the acute kidney…
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.…
2020 American Transplant Congress
Treg Lymphotoxin Signals Promote Cancer Metastatic Migration: Mechanisms for Treg-Cancer Interaction
W. Piao¹, R. Oakes², C. Paluskievicz¹, Y. Xiong¹, L. Li¹, V. Saxena¹, M. WillsonShirkey¹, C. Jewell², J. Bromberg¹
¹Surgery, U of Maryland, Baltimore, MD, ²U of Maryland, College Park, MD
*Purpose: Immune suppressive therapy can be complicated by malignancy. Regulatory T cells (Treg) control immune tolerance for graft survival but cause to immune suppression in…
2020 American Transplant Congress
Gingival Mesenchymal Stem Cells (GMSCs) Mitigate Liver Ischemia-Reperfusion Injury by Regulating Macrophage Polarization Through miR-199a-3p
Y. Zhang, M. Chen, W. Ju, T. Wang, Z. Chen, C. Huang, R. Xie, Q. Zhao, Z. Guo, X. He
Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
*Purpose: Mesenchymal stromal cells (MSCs) have been increasingly studied in organ ischemia-reperfusion injury, but the mechanism is still unclear. This study explored the immunoregulatory effects…
2019 American Transplant Congress
Role of NF-kB in Release of Isletokines via Exosomes in Response to Islet Stress
P. Saravanan¹, M. Kanak¹, J. Kalivarathan¹, M. Lawrence², M. Levy¹, B. Naziruddin³
¹Department of Surgery, Virginia Commonwealth University, VCU Health, Richmond, VA, ²Islet Cell Lab, Baylor Scott and White Research Institute, Dallas, TX, ³Simmons Transplant Institute, Baylor Scott and White Medical Center, Dallas, TX
*Purpose: Human islets are exposed to a range of inflammatory stimuli upon transplantation that leads to poor graft survival. Identifying the various signaling events may…