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Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
Published on: May 31, 2016
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Long noncoding RNAs in vascular smooth muscle cells regulate vascular calcification.
Geon Jeong1,2,3, Duk-Hwa Kwon1,4, Sera Shin1,4
1Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Jeollanam-do, Republic of Korea.
Scientific Reports
|April 12, 2019
Summary
Long noncoding RNA Lrrc75a-as1 regulates vascular calcification. Overexpression inhibits calcium buildup, suggesting it as a therapeutic target for this cardiovascular condition.
Area of Science:
- Molecular Biology
- Cardiovascular Research
- Genetics
Background:
- Vascular calcification involves hydroxyapatite crystal accumulation due to abnormal mineral metabolism.
- Adverse cardiovascular effects are known, but molecular mechanisms, particularly involving long noncoding RNAs (lncRNAs), remain unclear.
Purpose of the Study:
- To investigate the role of lncRNAs in vascular calcification.
- To identify and characterize specific lncRNAs involved in the process.
Main Methods:
- Transcriptomic analysis of rat vascular smooth muscle cells (VSMCs) treated with inorganic phosphate.
- Focus on differentially expressed lncRNAs, specifically Lrrc75a-as1, including transcript structure and localization.
- Functional studies involving knockdown and overexpression of Lrrc75a-as1 in A10 cells to assess calcium deposition and VSMC calcification.
Main Results:
- Hundreds of lncRNAs were found to be differentially expressed in response to phosphate treatment.
- Lrrc75a-as1 was identified and confirmed to be localized in the cytoplasm.
- Knockdown of Lrrc75a-as1 increased calcium deposition, while its overexpression inhibited it.
- Lrrc75a-as1 attenuated VSMC calcification by reducing the expression of osteoblast-related factors.
Conclusions:
- Lrrc75a-as1 functions as a negative regulator of vascular calcification.
- Lrrc75a-as1 may represent a potential therapeutic target for treating vascular calcification.
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