MiR-328-5p inhibits the adipogenic differentiation of hMSCs by targeting fatty acid synthase
Abstract
Introduction. Adipogenesis, a highly coordinated process regulated by numerous effectors, is largely responsible for the quantity and size of adipocytes. Attenuation of adipocyte differentiation has been proposed as a viable technique for reducing obesity and its associated diseases. MicroRNAs play an important role in human bone marrow mesenchymal stem cells (hMSCs) adipogenic differentiation. However, there is a lack of clarity regarding the role of miR-328-5p in adipogenesis. Material and methods. Using the lentiviral vectors to overexpress fatty acid synthase (FASN) and miR-328-5p, RT-qPCR and Western blotting were carried out to assess RNA expression and protein levels of FASN and adipogenic marker factors. Meanwhile, Oil red O staining and lipid quantification was performed to evaluate the accumulation of intracellular lipid droplets. Additionally, the validity of FASN as a potential target gene for miR-328-5p was carried out using a luciferase reporter assay. Results. Our data showed that hMSCs adipogenic differentiation was associaed with the reduced miR-328-5p expression, while an elevated expression of the underlined miRNA attenuated adipogenesis and the expression of adipogenic marker genes. Luciferase reporter assay validated FASN as a target gene of miR-328-5p, and an elevated FASN expression reversed the anti-adipogenic effects of miR-328-5p. Conclusions. The results revealed that miR-328-5p inhibits hMSCs adipogenic differentiation by targeting FASN. These findings contribute to our understanding of obesity-related disease development.
Keywords: miR-328-5phMSCsadipogenesisFASN
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