MiR-10 targets NgR to modulate the proliferation of microglial cells and the secretion of inflammatory cytokines.

The present study is aimed to investigate the molecular mechanism of miR-10 targeting NgR to regulate the proliferation and inflammatory cytokine secretion in microglia cells (MCs). The expression levels of NgR, IL-1β, and TNF-α in rat MCs were detected by QPCR and Immunoblotting assays. The proliferation of MC was detected by MTT and Soft agar clone formation assays. The target gene of miR-10 was verified by dual luciferase reporter gene assay. Overexpressed miR-10 downregulated the expression of NgR, promoted MC proliferation and inhibited inflammatory cytokine secretion. On the other hand, the inhibition of miR-10 upregulated the expression of NgR, inhibited MC proliferation and promoted inflammatory cytokine secretion. It was found that miR-10 targeted to regulate NgR. Overexpression of NgR restored the regulation effects of miR-10 on MC proliferation and inflammatory cytokine secretion. In summary, miR-10 can promote MC proliferation and inhibit the inflammatory cytokine secretion via targeting the NgR gene to down-regulate its expression.

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