Enhanced peripheral blood miR-324-5p is associated with the risk of metabolic syndrome by suppressing ROCK1.
Biochimica et biophysica acta. Molecular and cell biology of lipids(2020)
摘要
The current study aims to evaluate whether peripheral blood miR-324-5p could be used to differentiate patients with metabolic disorders and healthy controls. Our data showed that miR-324-5p levels were elevated in the peripheral blood of patients with hyperglycemia or hyperlipidemia. In addition, the expression of miR-324-5p was enhanced in the peripheral blood and liver of db/db mice. Further study indicated that overexpression of miR-324-5p reduced the activation of the AKT/GSK pathway and increased lipid accumulation, while the inhibition of miR-324-5p activated the AKT/GSK pathway and decreased lipid accumulation. A dual luciferase assay revealed that Rho-associated coiled-coil containing protein kinase 1 (ROCK1) was a target gene of miR-324-5p. In addition, silencing ROCK1 deteriorated lipid and glucose metabolism. More importantly, knockdown of ROCK1 reversed the miR-324-5p inhibitor-induced improvement of glucose and lipid metabolism. In summary, miR-324-5p plays a regulatory role in glucose and lipid metabolism by targeting ROCK1, which is involved in metabolic disorders. The use of miR-324-5p in diagnosing metabolic syndrome is worth investigating and may benefit patients.
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