scholarly journals Association between circular RNA expression content and severity of coronary atherosclerosis in human coronary artery

2020 ◽  
Vol 34 (12) ◽  
Author(s):  
Can Hou ◽  
Lingfeng Gu ◽  
Yi Guo ◽  
Yaqing Zhou ◽  
Lei Hua ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Atherosclerosis ◽  
Circular Rna ◽  
Rna Expression ◽  
Human Coronary Artery

scholarly journals Orai-IGFBP3 signaling complex regulates high-glucose exposure-induced increased proliferation, permeability, and migration of human coronary artery endothelial cells

2020 ◽  
Vol 8 (1) ◽  
pp. e001400
Author(s):  
Suwen Bai ◽  
Yuan Wei ◽  
Wenxuan Hou ◽  
YanHeng Yao ◽  
Junwei Zhu ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Coronary Artery ◽  
Protein Expression ◽  
High Glucose ◽  
Barrier Function ◽  
Coronary Atherosclerosis ◽  
Human Coronary Artery ◽  
Expression Levels ◽  
Signaling Complex ◽  
Junction Protein

IntroductionDiabetes-associated endothelium dysfunction might be linked to disturbances in Ca2+ homeostasis. Our main objective is to reveal the potential mechanisms by which high-glucose (HG) exposure promotes increased proliferation of human coronary artery endothelial cells (HCAECs) in culture, and that store-operated Ca2+ entry (SOCE) and insulin-like growth factor binding protein 3 (IGFBP3) contribute to this proliferation.Research design and methodsWe detected the expression levels of Ca2+ release-activated calcium channel proteins (Orais), IGFBP3 and proliferating cell nuclear antigen of HCAECs cultured in HG medium for 1, 3, 7, and 14 days and in streptozotocin-induced diabetic mouse coronary endothelial cells. Coimmunoprecipitation and immunofluorescence technologies were used to detect the interactions between Orais and IGFBP3 of HCAECs exposed to HG environment, and to detect IGFBP3 expression and proliferation after treatment of HCAECs cultured in HG medium with an agonist or inhibitor of SOCE. Similarly, after transfection of specific small interfering RNA to knock down IGFBP3 protein expression, SOCE activity and Orais expression were tested. Some processes related to endothelial dysfunction, such as migration, barrier function and adhesion marker expression, are also measured.ResultsHG exposure promoted increased proliferation of HCAECs in culture and that SOCE and IGFBP3 contributed to this proliferation. In addition, we also found that Orais and IGFBP3 were physically associated and regulated each other’s expression levels. Besides, their expression levels and interactions were enhanced in HCAECs after exposure to HG. HG exposure promotes cell migration, but reduces barrier function and adherens junction protein expression levels in HCAECs.ConclusionOrais and IGFBP3 formed a signaling complex that mediated HCAEC proliferation during HG exposure in culture. Meanwhile, we also found that SOCE stimulates proliferation of HCAECs by regulating IGFBP3, thereby promoting the occurrence and progression of coronary atherosclerosis in diabetes. It is worth noting that our findings may shed new light on the mechanisms of increased proliferation in HCAECs in diabetes and suggest the potential value of SOCE and IGFBP3 as therapeutic targets for coronary atherosclerosis in individuals with diabetes.

scholarly journals Quantitative Proteomics Reveals the Regulatory Networks of Circular RNA BTBD7_hsa_circ_000563 in human coronary artery

2020 ◽  
Author(s):  
Jia-Xin Chen ◽  
Lei Hua ◽  
Chen-Hui Zhao ◽  
Qiao-Wei Jia ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Regulatory Networks ◽  
Circular Rna ◽  
Mechanism Study ◽  
Human Coronary Artery ◽  
Atherosclerotic Stenosis ◽  
Coronary Artery Atherosclerosis ◽  
Underlying Mechanisms ◽  
And Function ◽  
Atherosclerotic Changes

Abstract Background: To investigate the association of BTBD7_hsa_circ_000563 expression in coronary artery segments with atherosclerotic stenosis, and to explore the proteome-wide identification of the BTBD7_hsa_circ_000563-regulated proteins in coronary artery Methods: The coronary artery samples were obtained from two autopsy cases. The epicardial coronary artery of every autopsy was divided into 10 segments, and coronary atherosclerosis grade and extent of the coronary artery segments were analysed by Haematoxylin and Eosin (H&E) staining. The BTBD7_hsa_circ_000563 expression of 8 segments from case 2 was quantified using RT-qPCR analysis. Results: The present study demonstrated that coronary artery segments with severe atherosclerotic stenosis showed extremely low expression of the BTBD7_hsa_circ_000563, compared with normal coronary artery segments. Furthermore, it was predicted that hsa-miR-155-5p, and hsa-miR-130a-3p are targets of the BTBD7_hsa_circ_000563. The results from the present study may laid an epigenetic foundation for studying the underlying mechanisms of the development and progression of coronary artery atherosclerosis. Conclusions: BTBD7_hsa_circ_000563 were involved in atherosclerotic changes in coronary artery segments of human being, and the verification study, mechanism study, and function study are necessary in order for CAD patients to benefit from the personalized medicine in the future.

scholarly journals Quantitative proteomics reveals the regulatory networks of circular RNA BTBD7_hsa_circ_0000563 in human coronary artery

2020 ◽  
Vol 34 (11) ◽  
Author(s):  
Jia‐Xin Chen ◽  
Lei Hua ◽  
Chen‐Hui Zhao ◽  
Qiao‐Wei Jia ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Quantitative Proteomics ◽  
Regulatory Networks ◽  
Circular Rna ◽  
Human Coronary Artery

Inhibition of Pro-Inflammatory Cytokine Secretion by Select Antioxidants in Human Coronary Artery Endothelial Cells

2020 ◽  
Vol 90 (1-2) ◽  
pp. 103-112 ◽  
Author(s):  
Michael J. Haas ◽  
Marilu Jurado-Flores ◽  
Ramadan Hammoud ◽  
Victoria Feng ◽  
Krista Gonzales ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Ascorbic Acid ◽  
Coronary Artery ◽  
Inflammatory Cytokines ◽  
Inflammatory Cytokine ◽  
Culture Media ◽  
Cytokine Secretion ◽  
Human Coronary Artery ◽  
Tnf Α ◽  
Pro Inflammatory Cytokines

Abstract. Inflammatory and oxidative stress in endothelial cells are implicated in the pathogenesis of premature atherosclerosis in diabetes. To determine whether high-dextrose concentrations induce the expression of pro-inflammatory cytokines, human coronary artery endothelial cells (HCAEC) were exposed to either 5.5 or 27.5 mM dextrose for 24-hours and interleukin-1β (IL-1β), interleukin-2 (IL-2), interleukin-6 (IL-6), interleukin-8 (IL-8), and tumor necrosis factor α (TNF α) levels were measured by enzyme immunoassays. To determine the effect of antioxidants on inflammatory cytokine secretion, cells were also treated with α-tocopherol, ascorbic acid, and the glutathione peroxidase mimetic ebselen. Only the concentration of IL-1β in culture media from cells exposed to 27.5 mM dextrose increased relative to cells maintained in 5.5 mM dextrose. Treatment with α-tocopherol (10, 100, and 1,000 μM) and ascorbic acid (15, 150, and 1,500 μM) at the same time that the dextrose was added reduced IL-1β, IL-6, and IL-8 levels in culture media from cells maintained at 5.5 mM dextrose but had no effect on IL-1β, IL-6, and IL-8 levels in cells exposed to 27.5 mM dextrose. However, ebselen treatment reduced IL-1β, IL-6, and IL-8 levels in cells maintained in either 5.5 or 27.5 mM dextrose. IL-2 and TNF α concentrations in culture media were below the limit of detection under all experimental conditions studied suggesting that these cells may not synthesize detectable quantities of these cytokines. These results suggest that dextrose at certain concentrations may increase IL-1β levels and that antioxidants have differential effects on suppressing the secretion of pro-inflammatory cytokines in HCAEC.

Determination of Human Coronary Artery Composition by Raman Spectroscopy

Circulation ◽  
1997 ◽  
Vol 96 (1) ◽  
pp. 99-105 ◽  
Author(s):  
James F. Brennan ◽  
Tjeerd J. Römer ◽  
Robert S. Lees ◽  
Anna M. Tercyak ◽  
John R. Kramer ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Coronary Artery ◽  
Human Coronary Artery
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