Docosahexaenoic acid inhibits vascular smooth muscle cell migration and proliferation by decreasing microRNA155 expression levels.
Mol Med Rep
; 22(4): 3396-3404, 2020 Oct.
Article
em En
| MEDLINE
| ID: mdl-32945419
ABSTRACT
Vascular smooth muscle cell (VSMC) hyperplasia is a common cause of carotid restenosis. In the present study, the potential protective effects of docosahexaenoic acid (DHA) in carotid restenosis and the underlying mechanism of its effects were examined. VSMCs were treated with DHA, a polyunsaturated ω3 fatty acid. Cell migration and proliferation were assessed using wound healing and Cell Counting Kit8 assays and by measuring Ki67 protein levels. Additionally, the expression levels of microRNA155 were determined by reverse transcriptionquantitative PCR (RTqPCR). The involvement of microRNA155 in the regulation of migration and proliferation was evaluated by transfecting VSMCs with microRNA mimics and inhibitors. Moreover, the reversal of migration and proliferation after transfection of VSMCs with the microRNA mimics and subsequent treatment with DHA was investigated. A target gene of microRNA155 was identified using RTqPCR and luciferase assays. The migration and proliferation of VSMCs, as well as the expression of microRNA155 was inhibited by DHA stimulation. MicroRNA155 regulated the migration and proliferation of VSMCs. Finally, proliferation and migration of VSMCs were reduced following DHA treatment, which was mediated by an increase in the expression levels of microRNA155. Suppressor of cytokine signalling 1 (Socs1) was the target gene of microRNA155. In conclusion, DHA inhibited VSMC migration and proliferation by reducing microRNA155 expression. This effect may be caused by the microRNA155 target gene Socs1.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação para Baixo
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Ácidos Docosa-Hexaenoicos
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MicroRNAs
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Proteína 1 Supressora da Sinalização de Citocina
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Músculo Liso Vascular
Limite:
Animals
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article