scholarly journals Effect of captopril on radiation-induced TGF-β1 secretion in EA.Hy926 human umbilical vein endothelial cells

Oncotarget ◽  
2017 ◽  
Vol 8 (13) ◽  
pp. 20842-20850 ◽  
Author(s):  
Jingni Wei ◽  
Hui Xu ◽  
Yinyin Liu ◽  
Baiyu Li ◽  
Fuxiang Zhou
Keyword(s):  
Endothelial Cells ◽  
Umbilical Vein ◽  
Human Umbilical Vein ◽  
Radiation Induced ◽  
Umbilical Vein Endothelial Cells ◽  
Tgf Β1

Transforming Growth Factor Betal and Beta2 Induce Down-Modulation of Thrombomodulin in Human Umbilical Vein Endothelial Cells

1995 ◽  
Vol 73 (05) ◽  
pp. 812-818 ◽  
Author(s):  
Taro Ohji ◽  
Hajime Urano ◽  
Akira Shirahata ◽  
Minoru Yamagishi ◽  
Ken Higashi ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Growth Factor ◽  
Time Course ◽  
Transforming Growth Factor ◽  
Umbilical Vein ◽  
Mrna Levels ◽  
Antigen Level ◽  
Human Umbilical Vein ◽  
Umbilical Vein Endothelial Cells ◽  
Tgf Β1

SummaryTo investigate the effects of transforming growth factor-betas (TGF-βs) on endothelial anticoagulant activity, we assayed thrombomodulin (TM) activity and antigen levels of human umbilical vein endothelial cells (HUVECs) incubated with TGF-βs in vitro. TGF-β1 suppressed surface TM activity and surface TM antigen levels maximally 12 h after incubation in dose-dependent manners. TGF-β2 was almost equipotent with TGF-β1 for the suppression of them. Both TGF-βs suppressed total TM antigen level in HUVECs, and the time course of the suppression was similar to that of the cell surface TM antigen level. The maximal reductions of TM mRNA levels by TGF-βs were observed at several hours ahead of those observed in both surface and total TM antigen levels, suggesting that the TGF-β-mediated suppression of TM antigen of HUVECs is primarily regulated at the TM mRNA level. Our present work suggests that the down-modulation of TM level induced by TGF-βs in HUVECs contributes in vivo to promoting the thrombogenesis either at the sites of injury of vessel walls, such as atherosclerotic lesions where TGF-β1 is released from platelets, smooth muscle cells and monocytes, or at neovascular walls in tumors secreting TGF-β2.

scholarly journals Irradiated Human Umbilical Vein Endothelial Cells Undergo Endothelial-Mesenchymal Transition via the Snail/miR-199a-5p Axis to Promote the Differentiation of Fibroblasts into Myofibroblasts

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Minxiao Yi ◽  
Bo Liu ◽  
Yang Tang ◽  
Fang Li ◽  
Wan Qin ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Umbilical Vein ◽  
Smooth Muscle Actin ◽  
Lung Fibroblasts ◽  
Type I ◽  
Mesenchymal Transition ◽  
Human Umbilical Vein ◽  
Radiation Induced ◽  
Umbilical Vein Endothelial Cells ◽  
Endothelial Mesenchymal Transition

Radiation induced pulmonary fibrosis (RIPF) is one of the major side effects of radiotherapy for lung cancer. Previous studies have shown that endothelial cells and activated myofibroblasts play a key role in RIPF. However, the interaction between irradiated endothelial cells and activation of myofibroblasts has not been reported. The aim of the present study was to examine whether irradiated endothelial cells would affect the differentiation of fibroblasts into myofibroblasts in the process of RIPF. In the current study, we used a coculture system that allowed direct contact between human fetal lung fibroblasts (MRC-5) and irradiated human umbilical vein endothelial cells (HUVECs). After 24 or 48 h, cells were sorted by flow cytometry. Radiation induced endothelial-mesenchymal transition (EndMT) by significantly increasing the expression of Snail and vimentin and reducing the expression of CD31 in HUVECs. In addition, irradiation of HUVECs induced the expression of collagen type I and α-smooth muscle actin (α-SMA) in MRC-5 cells. Further investigation indicated that irradiation of HUVECs induced the differentiation of fibroblasts into myofibroblasts through the Snail/miR-199a-5p axis. We conclude that irradiated endothelial cells undergo EndMT to promote differentiation of fibroblasts into myofibroblasts via the Snail/miR-199a-5p axis.

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