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09 October 2019 : Laboratory Research  

miR-149-5p Inhibits Vascular Smooth Muscle Cells Proliferation, Invasion, and Migration by Targeting Histone Deacetylase 4 (HDAC4)

Boya Zhang1BCD, Yang Dong1BCD, Ming Liu2AB, Lei Yang2DE, Zhuo Zhao2ABCD*

DOI: 10.12659/MSM.916522

Med Sci Monit 2019; 25:7581-7590

Abstract

BACKGROUND: Studies have demonstrated that microRNAs (miRNAs) have essential roles in biological functions of vascular smooth muscle cells (VSMCs). However, the function and related molecular mechanism of miR-149-5p in VSMCs remains unclear.

MATERIAL AND METHODS: We used MTT assay, Transwell assay, and wound-healing assay to measure the proliferation, invasion, and migration of VSMCs transfected with miR-149-5p mimics or inhibitors, respectively. Bioinformatics tools and luciferase assay were used to validate the relationship between miR-149-5p and histone deacetylase 4 (HDAC4). Rescue experiments were used to confirm the interaction of miR-149-5p and HDAC4 in regulating biological functions in VSMCs.

RESULTS: miR-149-5p was downregulated in PDGF-bb-induced VSMCs. It was also found that miR-149-5p overexpression suppressed proliferation, invasion, and migration of VSMCs, while miR-149-5p knockdown showed the opposite effects. Furthermore, HDAC4 was found to be a potential target of miR-149-5p, which rescued miR-149-5p-mediated proliferation, invasion, and migration in VSMCs.

CONCLUSIONS: We demonstrated that miR-149-5p can suppress biological functions of VSMCs by regulating HDAC4, which might provide a potent therapeutic target for VSMC growth-related diseases.

Keywords: Human Migration, Models, Cardiovascular

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750