CircSMAD3 and Its Role in Vascular Smooth Muscle Cell Behavior
Author Information
Author(s): Mei Shuai, Ma Xiaozhu, Zhou Li, Wuyun Qidamugai, Cai Ziyang, Yan Jiangtao, Hu Ding
Primary Institution: Tongji Medical College Huazhong University of Science and Technology
Hypothesis
The study aims to identify the role of circSMAD3 in vascular smooth muscle cell (VSMC) phenotype switching and proliferation.
Conclusion
CircSMAD3 acts as a novel regulator that suppresses VSMC proliferation and phenotype switching, potentially offering a new therapeutic strategy for cardiovascular diseases.
Supporting Evidence
- CircSMAD3 was significantly downregulated in vascular injury and atherosclerosis.
- CircSMAD3 silencing promoted VSMC proliferation and phenotype switching.
- CircSMAD3 overexpression suppressed neointima formation in vivo.
- CircSMAD3 interacts with hnRNPA1 to enhance its degradation.
- CircSMAD3 modulates p53 pre-RNA splicing through hnRNPA1.
Takeaway
CircSMAD3 is like a helper that keeps blood vessel cells from changing into a less helpful form, which can cause problems in the heart.
Methodology
The study used transcriptome screening, in vitro assays with mouse and human vascular smooth muscle cells, and in vivo experiments in mice to assess the role of circSMAD3.
Limitations
The study did not confirm the function of circSMAD3 using transgenic or knockout mice, and the relationship between circSMAD3 and its parent gene SMAD3 was not established.
Participant Demographics
C57BL/6J mice aged 12 weeks were used for in vivo experiments.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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