CircCDYL Contributes to Apoptosis, Ferroptosis, and Oxidative Stress of Ang II-Induced Vascular Smooth Muscle Cells in Thoracic Aortic Aneurysm.
Changjiang FuXiangrong ZuoJinghui AnYanlong ZhangLixin GuoHuashun LiPublished in: Angiology (2024)
Circular RNAs (circRNAs) have important regulation in thoracic aortic aneurysm (TAA). The function and mechanism of circCDYL (circ_0008285) was explored in TAA here. Angiotensin II (Ang II) was used to construct a TAA model. Real-time quantitative polymerase chain reaction (RT-qPCR) was performed for the detection of circCDYL, miR-1270, and a disintegrin and metalloproteinase 10 (ADAM10). Cell viability was examined via cell counting kit-8 (CCK-8) assay and proliferation was analyzed using Ethynyl-2'-deoxyuridine (EdU) assay. Apoptosis rate was assessed via flow cytometry. Western blot was used for protein detection. Oxidative stress was evaluated by commercial kits. CircCDYL was upregulated in TAA tissues and Ang II-induced circCDYL upregulation in vascular smooth muscle cells (VSMCs). Knockdown of circCDYL weakened Ang II-aroused inhibition of viability, proliferation, and promotion of apoptosis, ferroptosis, and oxidative stress in VSMCs. CircCDYL served as a miR-1270 sponge. The mitigated regulation of circCDYL knockdown for Ang II-induced injury was restored after miR-1270 downregulation. CircCDYL positively regulated ADAM10 through interacting with miR-1270. Overexpression of miR-1270 abated Ang II-induced injury by downregulating ADAM10. In conclusion, circCDYL was involved in the Ang II-induced VSMC injury in TAA via the miR-1270/ADAM10 axis.
Keyphrases
- angiotensin ii
- vascular smooth muscle cells
- oxidative stress
- cell proliferation
- diabetic rats
- long non coding rna
- angiotensin converting enzyme
- high glucose
- long noncoding rna
- signaling pathway
- dna damage
- aortic aneurysm
- endoplasmic reticulum stress
- spinal cord
- ischemia reperfusion injury
- flow cytometry
- high resolution
- transcription factor
- poor prognosis
- high throughput
- induced apoptosis
- endothelial cells
- spinal cord injury
- stem cells
- single cell
- loop mediated isothermal amplification
- heat stress
- sensitive detection
- pi k akt
- stress induced