Autocrine growth inhibition of IL-1β-treated cultured human aortic smooth muscle cells: Possible role of nitric oxide

1996 ◽  
Vol 11 (5) ◽  
pp. 223-228 ◽  
Author(s):  
Shinji Makita ◽  
Motoyuki Nakamura ◽  
Hiroaki Yoshida ◽  
Katsuhiko Hiramori
Keyword(s):  
Nitric Oxide ◽  
Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Growth Inhibition ◽  
Muscle Cells ◽  
Autocrine Growth ◽  
Aortic Smooth Muscle Cells ◽  
Aortic Smooth Muscle

scholarly journals LncRNA SCIRT is downregulated in atherosclerosis and suppresses the proliferation of human aortic smooth muscle cells (HAOSMCs) by sponging miR-146a in cytoplasm

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Wenhui Gao ◽  
Rong Li ◽  
Jingjing Yu ◽  
Xijie He ◽  
Duo Xu ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Cancer Biology ◽  
Direct Interaction ◽  
Muscle Cells ◽  
Aortic Smooth Muscle Cells ◽  
Aortic Smooth Muscle ◽  
Brdu Assay

Abstract Background SCIRT has been characterized as a key player in cancer biology, while its role in other human diseases is unclear. This study explored its role in atherosclerosis, with a specific focus on its interaction with SCIRT and miR-146a. Methods The expression of SCIRT and miR-146a in atherosclerosis-affected tissues and healthy tissues from 56 atherosclerosis patients were analyzed by RT-qPCR. The expression of SCIRT in nuclear and cytoplasm samples was detected by RNA fractionation assay. The direct interaction between SCIRT and miR-146a was detected by RNA pull-down assay. SCIRT and miR-146a were overexpressed in human aortic smooth muscle cells (HAOSMCs) to study the crosstalk between them. The role of SCIRT and miR-146a in the proliferation of HAOSMCs was analyzed with BrdU assay. Results SCIRT was downregulated by atherosclerosis, while miR-146a was upregulated by atherosclerosis. SCIRT was detected in both cytoplasm and nuclear samples, and it directly interacted with miR-146a. In HAOSMCs, overexpression of SCIRT and miR-146a did not affect the expression of each other. Interestingly, SCIRT suppressed the proliferation of HAOSMCs and reduced the enhancing effects of miR-146a on cell proliferation. Conclusion Therefore, SCIRT is downregulated in atherosclerosis and it suppresses the proliferation of HAOSMCs by sponging miR-146a in cytoplasm.

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