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Expression Profiles of Six Atherosclerosis-Associated microRNAs That Cluster in Patients with Hyperhomocysteinemia: A
Kejian Liu1,2, Saiyare Xuekelati3, Kang Zhou2
11 Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan, China .
Insights
Plasma microRNAs (miRNAs) can predict atherosclerosis in hyperhomocysteinemia patients. Specifically, miR-217 shows diagnostic value for atherosclerosis, aiding in predicting disease progression.
Area of Science:
- Cardiovascular Research
- Molecular Biology
- Biomarker Discovery
Background:
- Hyperhomocysteinemia (Hhcy) is linked to atherosclerosis.
- Plasma microRNAs (miRNAs) are potential biomarkers for various diseases.
- Specific miRNAs regulate genes involved in atherosclerosis development.
Purpose of the Study:
- To investigate if plasma atherosclerosis-associated miRNAs can predict atherosclerosis in Hhcy patients.
- To identify specific miRNAs with diagnostic potential for Hhcy-complicated atherosclerosis.
Main Methods:
- Selected six plasma miRNAs (miR-145, miR-155, miR-222, miR-133, miR-217, miR-30) known to be involved in atherosclerosis.
- Measured miRNA expression levels in plasma from Hhcy patients with and without atherosclerosis.
- Correlated miRNA expression with homocysteine (Hcy) and lipid parameters.
Main Results:
- Significant differential expression of five miRNAs (upregulation of miR-133, miR-217; downregulation of miR-145, miR-155, miR-222) was observed.
- miR-217 was significantly upregulated in Hhcy + Atherosclerosis (ATH) groups compared to controls.
- miR-217 showed a negative correlation with Hcy and triglycerides and specific expression patterns in ATH patients.
Conclusions:
- Plasma miR-217 expression is a potential diagnostic biomarker for atherosclerosis in Hhcy patients.
- miR-217 may effectively predict the progression of atherosclerosis in individuals with Hhcy.
- Targeting miR-217 could offer therapeutic strategies for Hhcy-associated atherosclerosis.
Abstract:
The aim of this study is to discuss the hypothesis that expression of plasma atherosclerosis-associated microRNAs (miRNAs) in hyperhomocysteinemia (Hhcy) patients could predict the presence of atherosclerosis from different channels. Six plasma miRNAs (miR-145, miR-155, miR-222, miR-133, miR-217, and miR-30) selected for our study have been confirmed as critical gene regulators involved in atherosclerosis and can be steadily determined in plasma. Expression of the above six plasma circulating miRNAs revealed significant upregulation of two miRNAs (miR-133 and miR-217) and downregulation of three miRNAs (miR-145, miR-155, and miR-222). Six candidate miRNAs showed a significant correlation with homocysteine (Hcy) or lipid parameters. The results of this study indicated that miR-217 was further significantly upregulated in Hhcy + ATH groups than in normal control, Hhcy-, and atherosclerosis-alone (ATH) groups and it showed a significant negative correlation with Hcy and triglycerides. More specifically, miR-217 showed the most specific expression patterns in all patients with atherosclerosis (ATH and Hhcy + ATH groups), which may have been a diagnostic value for Hhcy complicated with atherosclerosis, and predicted the progress of atherosclerosis in Hhcy patients effectively.
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