PI3K/Akt/uncoupling protein 2 signaling pathway may be involved in cell senescence and apoptosis induced by angiotensin II in human vascular endothelial cells

2014 ◽  
Vol 41 (10) ◽  
pp. 6931-6937 ◽  
Author(s):  
Ping Li ◽  
Xin Guo ◽  
Pingping Lei ◽  
Shoujun Shi ◽  
Shike Luo ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Angiotensin Ii ◽  
Signaling Pathway ◽  
Vascular Endothelial Cells ◽  
Uncoupling Protein ◽  
Cell Senescence ◽  
Uncoupling Protein 2 ◽  
Vascular Endothelial

scholarly journals Agonistic Autoantibodies to the Angiotensin II Type 1 Receptor Enhance ANGII Binding on Vascular Endothelial Cells

2015 ◽  
Vol 29 (S1) ◽  
Author(s):  
Mark Cunningham ◽  
Jessica Faulkner ◽  
Lorena Amaral ◽  
Denise Cornelius ◽  
Robert Kramer ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Angiotensin Ii ◽  
Vascular Endothelial Cells ◽  
Vascular Endothelial ◽  
Agonistic Autoantibodies

YAP Overexpression in Breast Cancer Cells Promotes Angiogenesis Through Activating Yap Signaling in Vascular Endothelial Cells

2020 ◽  
Author(s):  
Yu Yan ◽  
Qiang Song ◽  
Li Yao ◽  
Liang Zhao ◽  
Hui Cai
Keyword(s):  
Breast Cancer ◽  
Endothelial Cells ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Tumor Angiogenesis ◽  
Breast Cancer Cells ◽  
Vascular Endothelial Cells ◽  
Tissue Growth ◽  
Vascular Endothelial ◽  
Potential Marker

Abstract Background:The YAP signaling pathway is altered and implicated as oncogenic in human mammary cancers.However, roles of YAP signaling that regulate the breast tumor angiogenesis have remained elusive. Tumor angiogenesis is coordinated by the activation of both cancer cells and vascular endothelial cells. Whether the YAP signalingpathway can regulate the intercellular interaction between cancer cells and endothelial cellsis essentially unknown.Results: We showed here that conditioned media from YAP overexpressed breast cancer cells (CM-YAP+) could promote angiogenesis, accompanied byincreased tube formation, migration, and proliferation of human umbilical vein endothelial cells (HUVECs). Down regulation of YAP in HUVECs reversed CM-YAP+ induced angiogenesis.CM-YAP+ time-dependently activated YAP inHUVECs by dephosphorylating YAP and increasing nuclear translocation.We also identified that both G13-RhoA and PI3K/Akt signaling pathway were necessary for CM-YAP+ induced activation of YAP.Besides, connective tissue growth factor (CTGF) and angiopoietin-2 (ANG-2)actedas down-stream of YAP in HUVECs to promote angiogenesis.In addition, subcutaneous tumors nude mice model demonstrated that tumors overexpressed YAP revealed moreneovascularization in vivo.Conclusions: YAP-YAP interaction between breastcancer cells and endothelial cellscould promote tumor angiogenesis, supporting that YAP is a potential marker and target fordeveloping novel therapeutic strategies against breast cancer.

scholarly journals Inhibition of the JAK2/STAT3/SOSC1 Signaling Pathway Improves Secretion Function of Vascular Endothelial Cells in a Rat Model of Pregnancy-Induced Hypertension

2016 ◽  
Vol 40 (3-4) ◽  
pp. 527-537 ◽  
Author(s):  
Jian-Ying Luo ◽  
Dan Fu ◽  
Ya-Qin Wu ◽  
Ying Gao
Keyword(s):  
Endothelial Cells ◽  
Signaling Pathway ◽  
Rat Model ◽  
Vascular Endothelial Cells ◽  
Serum Levels ◽  
Vascular Endothelial ◽  
Pregnancy Induced Hypertension ◽  
Pregnant Rats ◽  
Tnf Α ◽  
Induced Hypertension

Background/Aims: The present study aimed to investigate the effects of the JAK2/STAT3/SOSC1 signaling pathway on the secretion function of vascular endothelial cells (VECs) in a rat model of pregnancy-induced hypertension (PIH). Methods: A PIH rat model was established. Forty-eight pregnant Sprague-Dawley female rats were selected and assigned into four groups: the normal group (normal non-pregnant rats), the non-PIH group (pregnant rats without PIH), the PIH group (pregnant rats with PIH) and the AG490 group (pregnant rats with PIH treated with AG490). Systolic blood pressure (SBP) and urinary protein (UP) were measured. The expressions of JAK2/STAT3/SOSC1 signaling pathway-related proteins in placenta tissues were detect by Western blotting. Radioimmunoassay was applied to detect serum levels of nitric oxide (NO), super oxide dismutase (SOD), placental growth factor (PGF), thromboxane B2 (TXB2) and endothelin (ET). Enzyme-linked immunosorbent assay (ELISA) was used to determine serum levels of interleukin-6 (IL-6), interleukin-10 (IL-10) and tumor necrosis factor-α (TNF-α). Results: Compared with the normal and non-PIH groups, the PIH and AG490 groups had higher SBP and UP levels at 17th and 25th day of pregnancy. The expressions of p/t-JAK2, p/t-STAT3 and SOSC1 in the PIH and AG490 groups were higher than those in the non-PIH group, while the expressions of p/t-JAK2, p/t-STAT3 and SOSC1 in the AG490 group were lower than those in the PIH group. Compared with the non-PIH group, serum levels of ET, TXB2, IL-6 and TNF-α were increased in the PIH and AG490 groups, while serum levels of NO, SOD, 6-keto-PGF1a and IL-10 levels were reduced. Furthermore, the AG490 had lower serum levels of ET, TXB2, IL-6 and TNF-α and higher serum levels of NO, SOD, 6-keto-PGF1a and IL-10 than those in the PIH group. Conclusion: Our study provides evidence that inhibition of the JAK2/STAT3/SOSC1 signaling pathway could improve the secretion function of VECs in PIH rats.

Sign in / Sign up

Export Citation Format

Share Document